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HomeMy WebLinkAbout20030885 Ver 1_Complete File_20030903r, J ® North Carolina Wildlife Resources Commission Charles R. Fullwood, Executive Director MEMORANDUM TO: FROM: DATE: SUBJECT John R. Dorney, Division of Water Quality Dept. of Environment and Natural Resources Ron Linville, Regional Coordinat /j?' Habitat Conservation Program August 29, 2003 ETLAND814,9,103, SEP -- ,3 2003 DATER QUALI T Y ECT1 tv Review of 401 Certification Application, City of Winston-Salem (W-S) Storm Water Department, Salem Creek- Civitan Park Stream Restoration, Forsyth County The applicant is requesting 401 Water Quality Certification from the North Carolina Division of Water Quality. The NCWRC has reviewed information provided by the applicant, and field biologists on our staff are familiar with habitat values of the project area. These comments are provided in accordance with provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d). The applicant proposes to restore habitat values and reduce sediment loadings to Salem Creek and Muddy Creek by doing stream restoration in the vicinity of Winston- Salem State University (WSSU). Presently the restoration area consists of greenway/parkland, WSSU, Bowman Gray Memorial Stadium and surrounding residential/commercial developments, including nearby Duke Power distribution and transmission facilities. Streams in the area have been directly and indirectly affected by urbanization. Floodplain and wetland fill has occurred throughout the watershed. These urban influences have caused streams to incise and widen through laterally erosion of streambanks. The project includes the use of typical bioengineering stream restoration activities and methodologies, including resizing streams and reconnecting (restoring access) streams to floodplains. Work will be accomplished in the dry using temporary Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 733-3633 ext. 281 • Fax: (919) 715-7643 Salem Creek Restoration 2 August 29, 2003 diversions. Impacts (0.11 acres) to wetlands are temporary. Cumulative impacts to streams will be 3655 linear feet. Two (2) wetland/water quality ponds will be constructed. Native plants will be used for stabilization. The project will restore 5240 feet of unstable stream channel and 5.2 acres of wetlands will be created. Over seventeen acres of riparian forest and native meadow habitats will be created. Project proponents indicate that sediment loadings will be significantly reduced (120 tons per year). The City of Winston-Salem will establish a permanent conservation easement to protect the riparian corridor. Generally, we support the project as proposed since current aquatic environment conditions are poor and bioengineering restoration should provide some improvements to aquatic habitats in the urban watershed area and reduce sediment loading downstream. However, based on our review of the project and our knowledge of the project area, we are concerned about future increased impervious area impacts to the restoration site and floodplain. Increased imperviousness is anticipated within the watershed from capital -- improvements at WSSU. These impacts could cause further destabilizations. We believe stormwater impacts can be offset by the use of Low Impact Development (LID) techniques. It is our understanding that this project is publicly funded and/or supported by several governmental entities, including the City of W-S and WSSU. The City of W-S has developed a gateway plan for the general area to improve its attractiveness for urban revitalization, financial investment and increased development. We do not know if the stream restoration or other publicly funded projects in the area should be reviewed pursuant to the NC Environmental Policy Act. If the 401 Certification is issued, the following recommendations are provided for your consideration: 1. Future and current capital improvements at WSSU (and other public facilities) should be carefully evaluated to ensure that additional impervious development will not cause secondary impacts (streambank erosion and exacerbated flooding) from modified stormwater releases that might undermine the stream restoration project. The use of LIDs is recommended for development at the university and the area in general. These activities are indicated to provide improved water quality through retention, filtration and mimicry of base flow regimes. Information on LID techniques may be found at www.lowimpactdevelopment.org. It is our understanding that these techniques are cost effective and land use efficient. 2. NC Environmental Policy Act review requirements should be considered if appropriate. 3. Stringent erosion control measures should be installed where soil is disturbed and maintained until project completion. 4. Only native piedmont plant species should be used for the project to the extent practicable and feasible. Salem Creek Restoration 3 August 29, 2003 5. Any instream culverts and/or piping in the restoration area(s) should be retrofitted so that aquatic migration can be maintained or restored. As additional work is done in the area, impacts to waters of the United States should be properly permitted and certified pursuant to the Clean Water Act. Generally, road culverts 48" or larger should be buried a foot into streambeds. Road culverts less than 48 inches in diameter should be buried to a depth equal to or greater than 20% their size to allow for aquatic life passage. These measurements must be based on natural thalweg depths. Utility lines and pipes should be raised to make aerial crossings or buried a minimum of a foot under thalweg depth, preferably by directional boring. 6. Aesthetically pleasing fencing is recommended to protect streamside buffer zone stability. Minimum one hundred foot undisturbed buffers should be provided for perennial streams and fifty foot undisturbed buffers should be provided for intermittent channels. 7. - Impacts to wooded areas should be mitigated through reforesting activities using native species. These activities should include preservation of understory vegetation to provide small animal and bird habitat diversity. Exotic plant species should be controlled as necessary to maintain native plants. Meadow areas should be maintained by mowing in late winter or early spring before bird and other animal nesting cycles begin. This maintains winter cover and provides early vegetative growth for ground nesting. 8. To the extent practicable, aquatic species impacted by the temporary water diversion should be relocated downstream to avoid mortality. 9. Equipment used in stream should be new or low hour equipment to reduce petroleum contamination. 10. Stormwater drains in the community should be retrofitted to provide best stormwater management practices and sheet flow through vegetated areas. 11. If concrete will be used, work must be accomplished so that wet concrete does not contact stream water. This will lessen the chance of altering the stream's water chemistry and causing a fish kill. 12. Impervious walking trails should be limited to a width of eight (8) to ten (10) feet. 13. Lime and fertilizer should be used at rates determined through NRCS soil evaluation criteria. 14. We recommend that the applicant or their consultant contact a North Carolina Wildlife Resources Commission biologist to discuss native planting schedules and reclamation activities. Wildlife biologist, David Sawyer can be reached at 336-957-4855. Additional planting suggestions and plant supply sources may be obtained from Stewardship biologist, Elizabeth Hughes at 828/274-3646. A mixed native forest should be planted to provide enhanced wildlife habitat diversity. Trees and shrubs (1 year bare root seedlings) should be planted randomly at a minimal rate of 100 trees per acre and at a minimal rate of 150 per acre around jurisdictional waters or wetlands. The following native tree species should be considered as they should enhance habitat values: Native Pine* Red Cedar Black Gum American Holly Dogwood Hickory Sumac Red Maple Salem Creek Restoration 4 August 29, 2003 Oak (sp) Viburnum Green Ash Ironwood Black Cherry Persimmon Black Walnut Willow (sp) Locust (sp) Mulberry Native Plums Serviceberry (Other species may be utilized depending on site requirements and availability. Pines* should not exceed 15% of the reforestation. No more than 20% of the tree species should be of a single species. An 80% success rate is acceptable over five years. A wildlife tree seedling pack is available from the NC Forest Service.) 15. Planting trees around water quality ponds and marshes or wetlands (excluding dams) should minimize thermal impacts by reducing the duration of direct sun exposure to surface waters. Thank you for the opportunity to review and comment on this project. If you have any questions regarding these comments, please contact me at 336/769-9453. 4?o?OF W AT fi9QG ? rte' U t` September 2, 2003 Mr. Keith Huff City of Winston-Salem Stormwater Department PO Box 2511 Winston-Salem, NC 27102 Michael F. William G. Ross, Jr., Department of Environment and Natural I Alan Klimek, Division of Water Qui APPROVAL OF 401 Quality Certification Subject: Stream Enhancement/Restoration Wetlands and Pond Construction Civitan Park Forsyth County, NC DWQ# 030885 Dear Mr. Huff: This Office is in receipt of the plans for the stream enhancement/restoration project that includes wetlands and pond construction, impacting approximately 2525 feet of Salem Creek, 1030 feet of Stadium Branch, 100 feet of an unnamed tributary and 0.11 acres of wetland impact in the Yadkin River Basin submitted to this Office on July 16, 2003 with additional information received August 21, 2003. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 3399, which may be viewed on our website at http://h2o.enr.state.nc.us/ncwetiands. This certification allows you to use General Permit Number 27 when the Corps of Engineers issues it. In addition, you should get any other federal, state or local permits before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. This approval will expire when the accompanying. 404 or CAMA permit expires unless otherwise specified in the General Certification. Violations of any condition listed within the General Water Quality Certification herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. This Certification shall become null and void unless the above conditions are made conditions of the Federal 404 and/or coastal Area Management Act Permit. This approval is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). This approval shall expire when the corresponding Nationwide Permit expires or as otherwise provided in the General Certification. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-9584. cc: Mr. Todd St. John, Wetlands Rocky Powel, Clear Creek C Mooresville Regional Office File &,i . Klimek, P ector 1317 Knopp Road, Jarrett ille, MD 21084 North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 6. bankfull cross-sectional area 280 223.5 274.3637 7. bankfull mean velocity 6.7 ok 7.96 ok 8. bankfull discharge cis 1885 1779 9. bankfull max depth 7.9 1.41 ok 7.9 1.48 ok 9.018374 10. width of floodprone area 200 500 570.7832 11. entrenchment ratio 4.00 C or E 12.2 12.66 C or E 12. meander length 490 210 239.7289 13. ratio of meander length to bankfull width 14. Radius of curvature 120 9.80 ok 5.32 71 5.32 too small? 81.05121 15. Ratio of radius of curvature to bankfull width 2.40 ok 1.8 1.80 too small? 24. Maximum Dod death 11.8 7.9 9.U18374 2. 26. Pool width 56 42.2 48.1741 28. Pod to pool spacing 153.75 normal p-p 73.15 normal p-p 84.U19Z8 29. Ratio of pod to pool spacing to bankfull width 0 3.68 C or E 1.86 too small? 32. Minimum Bench Width 33. Ratio of lowest bank height to bankfull height (or max bankfull depN) Rural Mountain Coastal Plain Design Reach Coastal Plain Bkfw Bkfd Sediment Transport Analysis ala Rosgen for D50 >2mm 82.8237724 8.166191588 d50 mm 0.6 mm active channel D50 only 59.61960502 4.979385114 ds50 mm 4.4 mm subsurface D50 76.27792742 3.549143401 Tci 0.473924 dimensionless Bkfw 356.5571665 653.1497189 56.91034804 58.64775931 Tci 0.473924 Di (largest) it 0.223097 avg bed S ft/ft 0.0028 Dbkf proposed 5.6 mean Dbkf needed 62.30584 Di mm 68 mm BKF A 280 ft2 wetted perim 65.83919 ft gRS=Tc 0.743047lb/ft2 diagram Shields pred 50-75 mm diagram Shields prod Ibs/ft2 average bed slope for reach not just riffle 54.57552 0.664412 69.39897 Variables Proposed Reach Check Results Reference Reach Check Results Range SGS Staticsting Channel 21. Pod slope (normal water surface) 0.001 0.0017 22. Riffle slope 0.007 2.50 too steep? 0.0048 1.85 too steep? 23. Ratin of nanl dnm to averane %lam 0.36 0.66 0.65 August 19, 2003 Mr. John R. Dorney North Carolina Division of Water Quality 401 Water Quality Certification Program 1650 Mail Service Center Raleigh, NC 27604-2260 WR MRS/401 G®OVp ? ? 2ua3 Re: Civitan Park Stream Restoration Project Aus DWQ Project No. 030885 QUAa rft Dear Mr. Dorney: This letter was prepared in response to comments received from the Water Quality Certification Program dated August 7, 2003. This response was prepared after consultation with Mr. Todd St. John of that office. 1. The Morphological Data Summary Table you requested was provided in the Final Design Report given to Mr. St. John during our field meeting on July 10, 2003. A copy of the Table of Contents from that report is highlighted and attached to this letter. 2. The Stormwater Wetlands Worksheet you requested has been completed and attached to this letter. In addition, the Design Calculations for the Water Quality Ponds prepared by Clear Creeks Consulting are provided as supporting documentation. Please note that the Memorandum of Understanding with the Clean Water Management Trust Fund attached to this letter covers operation and maintenance of the ponds. 3. Two (2) copies of the Final Design Report you requested are being forwarded directly to the North Carolina Wildlife Resources Commission. Three (3) additional copies of the report are included with this letter. I hope that this letter addresses your comments. If you have any additional questions feel free to contact our consultants or me. Sincerely, Mr. Keith Huff C Mr. Todd St. John Mr. Charles Anderson Division of Water Quality Storm water Wetlands Worksheet 1. Project Information Project Name: Salem Creek na, Civitan Park Contact Person: Rocky Powell Phone Number: (410) 692 -2164 A. General The design objectives for the two (2) water quality ponds included: 1. Maximize water quality benefits for the space available. 2. Design the facilities with minimal maintenance requirements. 3. Keep construction costs low. In order to accomplish these objectives the ponds were designed as passive treatment systems that provide: L Sedimentation and storage of particulates in forebay and micropool areas. 2. Chelation of metals in the organic substrate. 3. Nutrient uptake by emergent wetland vegetation. The ponds are designed to have shallow marsh wetland areas that are permanently flooded to a depth of 0.5 foot and temporarily flooded to a depth of 1.5 feet, fringe marsh areas that are permanently saturated and temporarily flooded to a depth of 1.0 foot, and forebay and micropool areas that have a permanent water depth of 1.5 feet and a temporary water depth of 3.0 feet. The main water control structure for the water quality ponds is a weir outfall constructed with 1) compacted fill material along the pond embankment, 2) geotextile liner, and 3) riprap protection. The stone weir controls the permanent and temporary water levels. The pond dewatering control structure is a six (6) inch PVC pipe extending from the micro-pool through the pond embankment to an outfall in the pond outfall channel. The upstream end of the PVC pipe will have a threaded cap that can be removed to allow draining the permanent pool for routine and emergency maintenance. B. Water Quality Pond #I (WSSU Parking Lot Area) Permanent Pool Elevation 754.5 ft. Temporary Pool Elevation 756 ft. Permanent Pool Surface Area 7,050 s q. ft. Drainage Area 2.0 acres Impervious Area 75% Foreba Surface Area 2,500 s q. ft. Permanently Flooded Wetland Surface Area 3,350 s q. ft. Permanently SaturatedJTemporarily Flooded Wetland Surface Area 5,600 sq. ft. Micro pool Surface Area 1,200 s q. ft. Temporary Pool Volume 22,850 cu. ft. SA/DA Used 0.14 Diameter of Orifice NA H. Required Items Checklist for Water Quality Pond #1 (WSSU Parking Lot Area) KEN Temporary pool controls the 1-inch rain. K Basin side slopes are no steeper than 3:1. ?tf A planting plan for the marsh areas with plant species and densities is provided. )eo# Vegetation above the permanent pool elevation is specified. )M 1"k An emergency drain is provided to drain the basin. KO if Temporary pool draws down in 2 to 5 days. KDi+ Sediment storage is provided in the permanent pool. 1CO J# Access is provided for maintenance. 1400 Plan details for the wetland are provided. KD $E Plan details for the inlet and outlet are provided. KbJ+ A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided. C. Water Quality Pond #2 (Park View Street Area) Permanent Pool Elevation 754.5 ft. Temporary Pool Elevation 756 ft. Permanent Pool Surface Area 7,175 s q. ft. Drainage Area 24.6 acres Impervious Area 50% Foreba Surface Area 1,875 s q. ft. Permanent) Flooded Wetland Surface Area 4,600 s q. ft. Permanently Saturated/Temporarily Flooded Wetland Surface Area 6,800 sq. ft. Micro pool Surface Area 700 s q. ft. Temporary Pool Volume 22,520 cu. ft. SA/DA Used .01 Diameter of Orifice NA H. Required Items Checklist for Water Quality Pond #2 (Park View Street Area) 1?O Temporary pool controls the 1-inch rain (see Design Calculations). 1cD 14 Basin side slopes are no steeper than 3:1. Ko 14 A planting plan for the marsh areas with plant species and densities is provided. 1GD 1; Vegetation above the permanent pool elevation is specified. KD 1; An emergency drain is provided to drain the basin. 14D14 Temporary pool draws down in 2 to 5 days. Kort Sediment storage is provided in the permanent pool. "id. Access is provided for maintenance. td Plan details for the wetland are provided. Kb ?{ Plan details for the inlet and outlet are provided. L16 If A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided. Design Calculations for Civitan Park Water Quality Pond Areas 1. Water Quality Pond # 1 Required Sediment Storage Volume: Schueler (1987) developed the Simple Method for estimating pollutant export from urban watersheds. Storm pollutant export (L, in pounds) can be determined for a given storm event (or on an annual basis) by solving the following equation: L = [(P) (Pi) (Rv)/12] (C) (A) (2.72) Where P = rainfall depth (inches) over the desired interval Pj = factor that corrects P for storms that produce no runoff Rv = runoff coefficient, which expresses the fraction of rainfall converted to runoff - a function of subwatershed percent imperviousness C = flow-weighted mean concentration of the pollutant in urban runoff (mg/1) obtained from (NURP) National Urban Runoff Program Study (USEPA, 1983) A = drainage area of watershed Conversion factors = 12 and 2.72 Given for Water Quality Pond #2: P = 44 inches/year for Winston Salem, NC Pi = .9 (90 percent of rainfall events generate runoff) RV = .75 (75 percent impervious) C = flow weighted mean concentrations for urban areas Sediment = 320 mg/l A = Drainage Area = 2.0 acres L = f(44) (.9) (.75) /121 (320) (2.0) (2.72) = 4,308.5 lbs 4,308.5 lbs @ 100 lbs/cu R = 43.08 cu ft of sediment accumulated over 12 months Volume of storm water to be treated Land Use by Soil Group: Impervious (Parking lots, sidewalks, roofs, streets, etc.): Soil Group B 1.5 acres Open space, lawn (Fair condition): Soil Group B 0.5 acres Total Area 2.0 acres Average Curve Number (CN) Calculations % drainage area x CN Impervious 75% x 98 = 7350 Open space 25% x 69 =1752 9075 CN = 9075 =-100 = 90.75, using 91 Sediment storage capacity S = 1000/CN - 10 S =1000/91- 10 S = 10.98 - 10 S = 0.98 inches Estimated runoff depth Q*=(P-0.2S)2 (P + 0.8 S) Q* _ [1.0 - 0.2 (0.98)12 [1.0+ 0.8 (0.98)] Q* = 0.784 2 (1.76) Q* = 0.615/1.76 = 0.347 inches Volume of storm water to be treated Vs = 3630 Q* A Vs = 3630 (0.347) (2.0) Vs = 2,519.2 ft Water Quality Pond # 1 Storage Volume Data -Storage Volume Required for 1-inch Rain Provided Sediment Storage 43.08 3,700 ft' Storm Water Treatment 2,519.2 ft' 19,150 Total Storage Volume 2,562.28 22,850 2. Water Quality Pond #2 Required Sediment Storage Volume: Given for Water Quality Pond #2: P = 44 inches/year for Winston Salem, NC Pj = .9 (90 percent of rainfall events generate runoff) Rv =5 (50 percent impervious) C = flow weighted mean concentrations for urban areas Sediment = 320 mg/! A = Drainage Area = 24.6 acres L = [(44) (.9) (3) /121(320) (24.6) (2.72) = 35,329 lbs 35,329 lbs @ 100 lbs/cu ft = 353 cu ft of sediment accumulated over 12 months Volume of storm water to be treated: Land Use by Soil Group: Impervious (Parking lots, sidewalks, roofs, streets, etc.): Soil Group B 12.3 acres Open space, lawn (Fair condition): Soil Group B 12.3 acres Total Area 24.6 acres Average Curve Number (CN) Calculations % drainage area x CN Impervious 50% x 98 = 4900 Open space 50% x 69 = 3450 8350 CN = 8350 + 100 = 83.5, using 85 Sediment storage capacity S =1000/CN - 10 S =1000/85 -10 S =11.76 -10 S =1.76 inches Estimated runoff depth Q*=(P-0.2S)x (P + 0.8 S) Q* _ [1.0 - 0.2 (1.76)1` [1.0+ 0.8 (1.76)] Q* = 1.4 Z (3.16) Q* = 1.96/3.16 = 0.62 inches Volume of storm water to be treated Vs = 3630 Q* A Vs = 3630 (0.62) (24.6) Vs = 55,357.5 ft Storage Volume Data: Storage Volume Required for 1-inch Rain Provided* Sediment Storage 353 ft' 2,575 Storm Water Treatment 55 004.5 22,520 ft' Total Storage Volume 55,357.5 25,095 ft' * Storage volume provided is sufficient to treat the 0.65-inch rain event. CLEAN WATER MANAGEMENT TRUST FUND GRANT AGREEMENT (PROJECT WITHOUT ACCESSORY LAND ACQUISITION) GRANTEE: City of Winston-Salem GRANT AGREEMENT NO.: 1999B407 FEDERAL I.D. NO.: 56-6000241 PROPERTY/PROJECT LOCATION: Salem Creek THIS GRANT AGREEMENT (the "Grant Agreement"), is made effective as of the day of , 2000 by and between THE NORTH CAROLINA CLEAN WATER MANAGEMENT TRUST FUND, acting through its Board of Trustees solely in its official capacity pursuant to Article 13A of Chapter 113 of the General Statutes of North Carolina, with an address of 2313-B Executive Park Circle,' Greenville, NC, 27834 (the "Fund") and City of Winston-Salem, with an address of PO Box 2511, Winston-Salem, NC 27102 (the "Grantee"). RECITALS A. The Grantee will use the funds described in Section I hereof for stream restoration and stormwater Best Management Practices (the "Project") and as further described as the purposes and scope of work, budget and schedule for completion in Exhibit A attached. hereto. B. The Fund tentatively approved the Grantee's application at its meeting on March 29, 1999 and is willing to make the grant described hereinabove based on the terms and conditions set forth in this Grant Agreement. COVENANTS NOW, THEREFORE, in consideration of the mutual agreements set forth herein, together with other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged by the patties hereto, the Grantee and the Fund enter into this Grant Agreement in accordance with article 13A of Chapter 113 of the General Statutes of North Carolina (N.C.G.S. § 113-145.1, et seq.). SECTION I The Grant 1.1. Grant. Subject to the terms and conditions of this Grant Agreement, the Fund will grant the Grantee the sum of up to $985,800 (the "Grant") to finance approved Project costs as described in Exhibit A attached hereto. 1.2. Grant Purpose. The, purpose of the Grant is to complete the Project. The Grant funds are to be disbursed according to the provisions of Section III after the conditions precedent in Section II have been satisfied or waived in writing by the Fund, and subject to all other provisions of this Grant Agreement. 1.3. Other Uses Prohibited. Grant funds may not be used for any purpose other than those described in paragraph 1.2. 1.4 Grant Disbursement Period. The Fund's commitment to disburse Grant funds under this Agreement shall cease on December 31, 2002. SECTION II Conditions Precedent for Disbursement of Any Grant Funds Before any Grant funds are disbursed for the Project, the Grantee shall deliver to the Fund the following: 2.1. Documents to Be Provided by the Grantee. As a local government Grantee shall provide the Fund authorization from the governing board or other appropriate authority to perform the functions and obligations of Grantee set out in this Grant Agreement. 2.2. Matching. Proof of availability and commitment of matching funds, as required by the Grant approval. 2.3. Initial Certification. Certificate and seal of a North Carolina licensed and appropriately qualified engineer or architect who is not an employee of the Grantee which attests that: (1) the Project, as designed and proposed, is a technically sound method for achieving the intended purposes, and (2) the total costs and itemized budget are reasonable and necessary. 2.4 Final Plans and Specifications. Evidence that the final plans and specifications for the Project have been approved by the North Carolina Division of Water Quality. These plans and specifications must also be approved by the Fund. 2.5 Project Sim-Evidence satisfactory to the Fund that Grantee has or will have either a permanent conservation easement or a conservation easement of at least 30 years on the site of the Project and all other real property of Grantee essential to the Project, including necessary easements and rights of way (the site of the Project and the other real property and easements referred to herein shall be referred to herein collectively as the "Property'), to assure undisturbed use and possession for the purpose of construction and operation for the estimated life of the Project, and that such property is satisfactory to the Fund for the Project and is as warranted in Sections 4.4, 4.5 and 4.7 hereof. 2.6. Compliance with Laws. Evidence satisfactory to the Fund that the Project and the Property and its intended uses are, and will continue to be, in compliance with all applicable laws, regulations and ordinances, including without limitation, land use, health and environmental protection laws and zoning laws. SECTION III Disbursement of Project Costs. Winston Salem 996-407 Contract 2 08122/00 2:04 PM 3.1. Reporting. Disbursement of Grant funds for the Project shall be made by quarterly reimbursement of Grantee's expenditures on the Project as set forth in Exhibit A. To obtain reimbursement, Grantee shall submit quarterly reports identifying progress toward accomplishing the Project objectives and containing appropriate itemized documentation to the Executive Director of the Fund (the "Executive Director") showing all expenses incurred and shall comply with the provisions of this Section III and other applicable provisions of this Grant Agreement. Where the Grant funds are to pay only a portion of the entire Project cost, the actual amount of reimbursement shall have the same ratio to all expenses incurred as the Grant has to the entire Project cost. Grantee shall identify any sales tax for which reimbursement has been or will be obtained from the State of North Carolina Department of Revenue, and such monies shall not be reimbursed. 3.2. Certification by Engineer. At the option of the Fund, reimbursements may be made only on the certificate and seal of a North Carolina licensed engineer or architect, who is not an employee of the Grantee, that the improvements for which the reimbursement is requested have been completed in accordance with approved plans and specifications, to which certificate shall be attached an estimate by the contractor setting forth items to be paid out of the proceeds of each such reimbursement. The Fund, at its option, may further require a certificate from such engineer or architect that the portion of the Project completed as of the date of the request for reimbursement has been completed according to schedule and otherwise as approved by the Fund. and according to applicable engineering or architectural standards and requirements. However, the Fund may, at its discretion, make reimbursements without requiring such certificates or contractor's estimate, in which event the Grantee shall furnish the Fund a list of and the amounts of items to be paid out of the reimbursement, or such other evidence as the Fund may require. 3.3 Reimbursement Based on Progress. The Grantee agrees to proceed with diligence to construct the Project according to the schedule set out in Exhibit A and shall show appropriate progress prior to each reimbursement. Reimbursement may be withheld or delayed if Grantee fails to make progress on the Project satisfactory to the Fund. Amounts withheld shall be reimbursed with subsequent reimbursements in the event that Grantee is able to demonstrate an ability to resume satisfactory progress toward completion of the Project. 3.4 Proof of Payment. The Grantee agrees to pay, as the work progresses, all bills for labor and materials going into the construction of the Project, and agrees to submit to the Fund all such receipts, affidavits, canceled checks, or other evidences of payment as may be requested from time to time, and when and if requested by the Fund to furnish adequate proof of payment of all indebtedness incurred in the development of the Project. 3.5. Books and Records. The Grantee agrees to maintain and make available at all reasonable times to the Fund all bid documents, and accurate books and records of all expenditures for costs applicable to this Grant Agreement, and to submit properly certified billings for such costs on forms prescribed by the Fund and supported by detailed data sheets which will facilitate the audit of the Grantee's records. 3.6. Audits. Grantee agrees that the Fund and the State of North Carolina ("State") have the right to audit the books and records of the Grantee pertaining to this Grant Agreement both Winston Salem 996-407 Contract 3 08/22/00 2:04 PM during performance and for thirty-six (36) months after completion or termination of the Project. The Grantee shall retain complete accounting records, including original invoices, payrolls, contracts, or other documents clearly showing the nature of all costs incurred under this Grant Agreement, for that same period of time. 3.7. No Excess Costs. The Fund agrees to reimburse the Grantee only for costs actually incurred by the Grantee which do not exceed the funds budgeted for the Project in Exhibit A. 3.8. Insurance. The Grantee agrees to keep structures or improvements of any sort constituting the Project fully insured at all times during construction and to keep fully insured all building materials at any time located on the Project. Grantee will ensure that contractor(s) fiunish(es) adequate payment and performance bonds. 3.9. Refunds. The Grantee agrees to refund to the Fund any funds not expended in the completion of the Project under the terms of this Grant Agreement, including any interest earned on funds granted pursuant to this Grant Agreement. 3.10 No Liens. Grantee shall take such action, including, without limitation, obtaining lien waivers, as shall be reasonably necessary to avoid liens against the Property in any way related to the Project. SECTION IV Representations and Warranties In order to induce the Fund to enter into this Grant Agreement and to make the Grant as herein provided, the Grantee, after reasonable inquiry, makes: the following representations, warranties and covenants, which shall remain in effect after the execution and delivery of this Grant Agreement and any other documents required hereunder, any inspection or examinations at any time made by or on behmifvf the Fund, and the completion of the Project by the Grantee: 4.1. No Actions. There are no actions, suits, or proceedings pending, or to the knowledge of the Grantee threatened, against or affecting the Grantee before any court, arbitrator, or governmental or administrative body or agency which might affect the Grantee's ability to observe and perform its obligations under this Grant Agreement or complete the Project. 4.2. Validity of Grant Documents. Upon execution and delivery of items required hereunder, this Grant Agreement and the other documents executed or delivered in connection herewith and items required hereunder will be valid and binding agreements and enforceable in accordance with the terms thereof. 4.3. No Untrue Statements. Neither this Grant Agreement nor any information, certificate, statement, or other document furnished by Grantee in connection with the Grant, contains any untrue statement of a material fact or omits disclosure of a material fact which affects the Project, the Property or the ability of the Grantee to perform this Grant Agreement. Winston Salem 996-407 Contract 4 08122/00 2:04 PM 4.4. Condition of Property. After appropriate inquiry and investigation, the Grantee is aware of no reason that the Project may not be completed without violating any federal, state or local environmental or land use laws and regulations. 4.5 Environmental Condition of Property. The Grantee warrants, represents and covenants to the Fund that to the best of its knowledge after appropriate inquiry and investigation: (a) the Property is and at all times hereafter will continue to be in full compliance with all federal, state and local environmental laws and regulations, and (b) as of the date hereof there are no hazardous materials, substances, wastes or other environmentally regulated substances (including, without limitation, any materials containing asbestos) located on, in or under the Property or used in connection therewith, and that there is no environmental condition existing on the Property that may prohibit or impede use of the Property for the purposes set forth in this Grant Agreement, and the Grantee will not allow such uses or conditions. 4.6 Access. There is legal public access to the property from a public roadway. 4.7 Title. The Grantee holds an appropriate easement on the Property or holds Property in fee simple; that there is legal access to the Property and that the Property is free and clear of any and all encumbrances, except easements of record, none of which would nullify, adversely affect or limit in any way the terms or effect of the Project. SECTION V Affirmative Covenants 5.1. Compliance with Laws. Grantee agrees to perform and maintain the Project in compliance with all federal, state and local laws and regulations, including, without limitation„ environmental, zoning and other land use laws and regulations. 5.2 Material-Modifications. Any proposed material modification of the Project shall be subject to approval by the Fund. 5.3. Tax Exempt Status. If the Grantee is a nonprofit corporation, it shall maintain tax- exempt status under Section 501(c)(3) of the Internal Revenue Code of 1986, as amended (or any successor section) and the regulations promulgated thereunder (the "Internal Revenue Code") and shall notify the Fund upon any change in its status under the Internal Revenue Code prior to all Grant funds being disbursed to Grantee. 5.4. No Mitigation. Grantee shall not use the Property or any portion thereof to satisfy compensation mitigation requirements under 33 U.S.C. § 1344 or N.C.G.S. 143-214.11. 5.5 Inspections. The Grantee shall permit representatives of the Fund to visit the Property and any other premises of the Grantee to examine any property purchased with the Grant funds and to review the activities of the Grantee pursuant to the Grant, including books and records in any way related to the Grant or the Project. Winston Salem 996-407 Contract 5 08/22100 2:04 PM 5.6. Retention Operation, Maintenance and Use. (a) Grantee agrees to complete the Project as approved by the Fund. The Property descriptions, purpose, schedules, scope of work and budgets set out in Exhibit and accompanying or related plans, specifications, estimates, procedures and maps submitted to the Fund by the Grantee are the foundation of this Grant Agreement. Only changes deemed non-material in type at the discretion of the Executive Director may be made without the consent of the Clean Water Management Trust Fund Board of Trustees. (b) Property acquired, developed or improved with grant assistance shall be retained and used for the purposes identified in Exhibit A and Grantee hereby agrees to file or record such restrictions as may be required to assure such continued use and such restrictions shall be in form and substance satisfactory to the Fund. For a period of ten (10) years after Project completion, Grantee agrees to maintain and manage, at maximum functional utility, the restored stream channel unless the Fund agrees, in writing, to waive this requirement. (c) If at some future date, the Fund and the Grantee agree that the Project should no longer continue on the Property, then Grantee will abandon the Project and allow the Property to return to its natural state. (d) Property acquired, developed or improved for public use with Grant assistance that is open for entry and use by the public shall be open to entry and use equally by all persons, regardless of race, color, creed, national origin, or residence, subject to reasonable published rules governing use of the Property consistent with this Grant Agreement. 5.7. Pollution Credits. If the Project enables the Grantee to reduce the discharge of phosphorus, nitrogen, or any other nutrient or pollutant below, or further below, applicable regulatory limits ("Pollution Credits"), Grantee shall not sell, trade or give to another person or entity that percentage zf-any resulting credits achieved by the Project corresponding to the percentage of the Project costs provided by the Fund. 5.8. Final Report. Grantee shall submit a final report within 90 days of the completion of the Project. Such final report shall include: (a) a narrative statement evaluating and summarizing the completed Project, including a brief description of what objectives the Grantee hoped to accomplish with the Project and what actually was accomplished; (b) "Certificate of Completion", and any other documents, reports or other evidence, including photographs necessary to verify that the Project has been concluded in compliance with this Grant Agreement; and (c) a full financial report on the Project, including a final invoice for all Project related expenditures. Winston Salem 998-407 Contract 6 08/22/00 2:04 PM 5.9. Si na e. Grantee agrees, at its expense, to post visible signs along boundaries of the Property, satisfactory to the Fund, that acknowledge participation of the Fund in the Project and protection of the Property, satisfactory to the Fund, and that the Property will remain in its protected state. 5.10 Conflicts of Interest. Grantee shall comply with all conflicts of interest laws, rules and regulations applicable to it in the State. 5.11 Additional Requirements. Grantee shall comply with all legal requirements applicable to the use of the grant funds. 5.12. Publici . To the extent possible, the Grantee will use its best efforts to appropriately publicize the project's water quality benefits to the general public, local government and state representatives, including the role of the Fund in the funding and development of the project. 5.13 Coordination. Grantee agrees to coordinate restoration activities with the North Carolina Wetland Restoration Program. SECTION VI Events of Default The happening of any of the following, after the expiration of any applicable cure period without the cure thereof, shall constitute an event of default ("Event(s) of Default") by the Grantee of its obligations to the Fund and shall entitle the Fund to exercise all rights and remedies under this Grant Agreement and as otherwise available at Jaw or equity: 6.1. Property Unsuitable. A determination by the Fund, prior to the disbursement of Grant funds, that the Property is unsuitable for the purposes for which this Grant Agreement is made. 6.2. Unsuitable Use. The Property is being used in a manner materially inconsistent with the purposes of this Grant Agreement or the Project. 6.3. Default in Performance. The default by the Grantee in the observance or performance of any of the terms, conditions or covenants of this Grant Agreement, including, without limitation, a failure to satisfy any condition precedent to disbursement or reimbursement set forth in sections II or III herein; provided, however, that no such default shall occur until the Grantee has received written notice of said default and thirty (30) days (or a longer length of time agreeable to the Grantor) to cure have elapsed; provided, further however, that the Grantee shall be entitled to such notice no more than four times in any calendar year. 6.4. Misrepresentation. If any representation or warranty made by the Grantee in connection with the Grant or any information, certificate, statement or report heretofore or hereafter made shall be untrue in any material respect at the time made. Winston Salem 998-407 Contract 7 08/22/00 2:04 PM 6.5. Eligibility of Grantee. If Grantee ceases to be qualified to receive Grant funds or is dissolved or other wise ceases to exist. 6.6. Abandonment of the Proiect. If Grantee abandons or otherwise ceases to continue to make reasonable progress towards completion of the Project. SECTION VII The Fund's Rights and Remedies If an Event of Default shall occur and any applicable cure period has expired, the Fund shall have the following rights and remedies, all of which are exercisable at the Fund's sole discretion, and are cumulative, concurrent and independent rights: 7.1. Project Termination. If an Event of Default occurs and any applicable cure period has expired, the Fund may, at its discretion suspend and/or terminate all obligations of the Fund hereunder. If, in the judgment of the Fund, such failure was due to no fault of the Grantee, amounts required to resolve at minimum costs any irrevocable obligations properly incurred by Grantee shall, in the discretion of the Fund, be eligible for assistance under this Grant Agreement. 7.2. Additional Remedies. If an Event of Default occurs and at the end of any applicable cure period, the Fund shall have the power and authority, consistent with its statutory authority: (a) to prevent any impairment of the Project by any acts which may be unlawful or in violation of this Grant Agreement or any other item or document required hereunder, (b) to obtain title to or otherwise preserve or protect its interest in the Project and any Property acquired with Grant funds, (c) to compel specific performance of any of Grantee's obligations under this Grant Agreement, (d) to obtain return of all Grant Funds and/or (e) to seek damages from any appropriate person or entity. The Fund, or its designee, may also, at the Fund's sole discretion, continue to complete the Project, or any portion tM*Mof deemed appropriate by the Fund, and the Grantee shall cooperate in the completion of the Project. The Fund shall be under no obligation to complete the Project. 7.3. Nonwaiver. No delay, forbearance, waiver, or omission of the Fund to exercise any right, power or remedy accruing upon any Event of Default shall exhaust or impair any such right, power or remedy or shall be construed to waive any such Event of Default or to constitute acquiescence therein. Every right, power and remedy given to the Fund may be exercised from time to time and as often as may be deemed expedient by the Fund. SECTION VIII Miscellaneous The following conditions shall be applicable to this Grant Agreement: 8.1. Modification. This Grant Agreement may be rescinded, modified or amended only by written agreement executed by all parties hereto. Winston Salem 998-407 Contract 8 08/22100 2:04 PM 8.2. Benefit. This Grant Agreement is made and entered into for the sole protection and benefit of the Fund, the State and the Grantee, and their respective successors and assigns, subject always to the provisions of Section 8.7 hereof. Except for the State, there shall be no third party beneficiaries to this Grant Agreement. 8.3. Further Assurance. In connection with and after the disbursement of funds under this Grant Agreement, upon the reasonable request of the Fund, the Grantee shall execute, acknowledge and deliver or cause to be delivered all such further documents and assurances, and comply with any other requests as may be reasonably required by the Fund or otherwise appropriate to cant' out and effectuate the grant contemplated by this Grant Agreement and the Project. 8.4. Compliance by Others. The Grantee shall be responsible for compliance with the terms of this Grant Agreement by any political subdivision or public agency to which funds are transferred pursuant to this Grant Agreement. Failure by such organization to comply shall be deemed failure by the Grantee to comply with the terms of this Grant Agreement. 8.5. No Discrimination. The Grantee shall assure that no person will be excluded from participation in, be denied the benefits of, or be subject to discrimination under any program or activity covered by this Grant Agreement solely on the grounds, race, color, age, religion, sex or national origin. 8.6. ADA Compliance. The Americans with Disabilities Act 1990 as it may be amended from time to time, and the rules and regulations promulgated in connection therewith (the "ADA") makes it unlawful to discriminate in employment against a qualified individual with a disability and outlaws discrimination against individuals with disabilities in State and local government services and public accommodations. The Grantee agrees to, and agrees to cause its principals and subcontractors to comply with, the ADA. 8.7. Assi;;nmerrt The terms hereof shall be binding upon and inure to the benefit of the successors, assigns, and personal representatives of the parties hereto; provided, however, that the Grantee may not assign this Grant Agreement or any of its rights, interests, duties or obligations hereunder or any Grant proceeds or other moneys to be advanced hereunder in whole or in part without the prior written consent of the Fund, which may be withheld for any reason and that any such assignment (whether voluntary or by operation of law) without said consent shall be void. 8.8. No Partnership, Joint Venture, or Agency. This Grant Agreement shall not in any way be interpreted or construed as making the Fund a partner or joint venturer with the Grantee, nor as making the Grantee agent or representative of the Fund. The Grantee agrees that neither it nor its agents or employees are or shall be agents or employees of the Fund. In no event shall the Fund be liable for debts or claims accruing or arising against the Grantee. 8.9. Indemnity. The Grantee agrees, to the fullest extent permitted by law, to release, defend, protect, indemnify and hold harmless the State, the Fund, its Trustees, employees and agents against claims, losses, liabilities, damages, and costs, including reasonable attorney fees, which result from or arise out of. (I) damages or injuries to persons or property caused by the Winston Salem 996-407 Contract 9 08122100 2:04 PM negligent acts or omissions of Grantee, its employees, or agents in use or management of the Property; or (II) use or presence of any hazardous substance, waste or other regulated material in, under or on the Property. The obligations under this Section are independent of all other rights or obligations set forth herein. Thus indemnity shall survive the disbursement of the Grant funds, as well as any termination of this Grant Agreement. 8.10. Governing Law, Construction and Jurisdiction. This Grant Agreement and the other Grant Documents and all matters relating thereto shall be governed by and construed and interpreted in accordance with the laws of the State of North Carolina, notwithstanding the principles of conflicts of law. The headings and section numbers contained herein are for reference purposes only. The terms of this Grant Agreement shall be construed according to their plain meaning, and not strictly construed for or against a party hereto. The Grantee hereby submits to the jurisdiction of the state and Federal courts located in North Carolina and agrees that the Fund may, at its option, enforce its rights under the Grant Documents in such courts. The parties hereto intend this document to be an instrument executed under seal. The Fund and any parry that is an individual, partnership or limited liability company hereby adopts the word "SEAL" following his/her signature and the name of the Fund or partnership or limited liability company as his/her/its legal seal. 8.11. Savings Clause. Invalidation of any one or more of the provisions of this Grant Agreement, or portion thereof shall in no way affect any of the other provisions hereof and portions thereof which shall remain in full force and effect. 8.12. Notices. All notices, requests or other communications permitted or required to be made under this Grant Agreement or the other documents contemplated by this Grant Agreement shall be in writing, signed by the party giving such notice to the address set forth below, and shall be deemed given three (3) business days next following the date when deposited in the mail, postage prepaid, registered or certified mail, return receipt requested, to the other party hereto at the address indicated below-or-such other addresses as such party may establish in writing to the other party in the manner provided hereunder for notices: If to the Fund: Clean Water Management Trust Fund 2313-B Executive Park Circle Greenville, NC 27834 Attn: Roy Carlton If to the Grantee: City of Winston-Salem PO Box 251 Winston-Salem, NC 27102 Crystal Couch 8.13 Additional Remedies. The rights and remedies of the Fund provided hereunder shall be in addition to, and not in lieu of, all other rights and remedies available to the Fund in connection with this Grant Agreement. Winston Salem 996-407 Contract 10 08122100 2:04 PM 8.14 Survivorship. Where any representations, warranties, covenants, indemnities or other provisions contained in this Grant Agreement by its context or otherwise, evidences the intent of the parties that such provisions should survive the Closing or any termination of this Grant Agreement, the provisions shall survive the Closing or any such termination. Without limiting the generality of the foregoing, the parties specifically acknowledge and agree that the provisions of Sections III, IV, V, VI, VII, and VIII shall survive the Closing, as well as any termination of this Grant Agreement. 8.15. Entire Agreement. This Grant Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof. All recitals, exhibits, schedules and other attachments hereto are incorporated herein by reference. IN WITNESS WHEREOF, the undersigned have executed this Grant Agreement under seal through their duly authorized officers of HE 'ves, to be effective the day and year first above C/Tya.? ST: J GRA WE: ' z 1 0 CAR6U N ' o 1,.=y: i e: [?iTV C?rQC?;nQV ' [SEAL] ........ FUND: ApproVel as to forrm and legality. Fits-/? day of,1g;2'" 20e=. By .??8. - tnrney NORTH CAROLINA CLEAN WATER MANAGEMENT TRUST FUND BOARD OF TRUSTEES (SEAL) BY: Joseph M. Hester, Jr., Chairman This instrument has been preaudited in the manner required by the Local Government and Fiscal Control ct. This 3 day of 20 Budge Direc Winston Salem 99B-407 Contract 08/22/00 2:04 PM 11 CLEAR CREEKS CONSULTING 1317 Knopp Road Jarrettsville, Maryland 21084 (410) 692-2164 Mr. Keith Huff City of Winston-Salem Storm Water Department P.O. Box 2511 Winston-Salem, NC 27102 Re: Salem Creek - Civitan Park Stream Restoration Dear Mr. Huff: July 20, 2003 I prepared this letter in response to the comments and request for additional information you received from the Land Quality Section dated July 16, 2003. This response was prepared after consultation with Mr. Steve Booe of that office. Item #2 - Is rye grass or rye grain going to be used? Recommend using rye grain. The Contractor has been directed to use rye grain. See clarification to Section 16 - Seeding and Mulching. Item # 3 - Provide temporary seeding specifications for all seasons. It is intended that construction of this project will be completed during October - December 2003.. Grass seed appropriate for site stabilization during Fall/Winter was one criterion that determined the seed specifications included in the. Construction Specifications document. If the project is delayed and construction occurs during the warmer months, brown millet at 40 lbs/acre would be substituted for the rye (grain) at 60 lbs/acre specified in the Construction Specification documents. Item #4 - Provide the liquid binder rates for mulching When liquid binders are used, they shall be applied at a uniform rate as provided for in the manufacturer's directions. The Contractor shall provide the Contracting Officer with a copy of the manufacturer's literature prior to the use of any liquid binder. This information will be forwarded to the Land Quality Section. Page 2 Mr. Keith Huff July 20, 2003 Item #5 - If Salem Creek is not going to be pumped around then additional sediment and erosion control measures will be required. The following additional measures have been included in the Construction Specifications; sequence of construction, and construction plans to address Land Quality's conditions relative to waiving the dewatering of Salem Creek: Sequencing; Channel Excavation/Construction 1. Excavation of the new channel in areas of fastland will be conducted in the dry. 2. Backfilling of the old channel and diversion of flow into the new channel shall be accomplished by placing rock sills and shot rock base into open water areas. 3. The rock sills utilized to construct riffles shall be placed at the upstream end of the new channel to function as a weir that prevents premature diversion of streamflow into the new channel. 4: A shot rock base shall be placed along the proposed edge of water starting from upstream and moving downstream. It is intended that placement of the shot rock base will gradually seal off the old channel, forcing streamflow over the rock sill and into the new channel. 5. After the shot rock base has been placed and the flow diverted into the new channel, the Contractor shall place soil on the shot rock base to create the new banks and complete the seal off of the old channel. Soil to create the new banks will be placed on the. shot rock base in lifts until the desired bank elevation has been obtained. 6. The Contractor shall access stream banks from the same side of the channel as the bank on which excavation or grading is taking place. Additional Measures 1. The Contractor shall be responsible for providing temporary stabilization of all graded stream banks on a daily basis. Immediately after the completion of final grading erosion control blankets shall be installed on all graded stream banks. 2. Silt fence will be installed if material is temporarily stockpiled on-site. This material may include soil excavated from the graded stream banks. All surplus material would be hauled to one or both of the City's landfills prior to the completion of the project. Potential stockpile sites were identified on the Erosion and Sedimentation Control Plans. Page 3 Mr. Keith Huff July 20, 2003 Item #6 - Stabilize all streamside areas daily if the stream is flowing through the area. For pump around areas, all streamside areas must be stabilized before flow is let back into the channel. . The first comment is covered in the revisions to the Construction Specifications as noted above in Item #5. The second comment was already addressed in the original sequence of construction for the tributaries, floodplain wetlands, and water quality ponds. Item #7 - Provide adequate sediment and erosion control below staging and stockpile areas. Silt fence will be installed if material is temporarily stockpiled on-site. All streamside areas including temporary staging areas will be stabilized daily as indicated above. Potential,stockpile and staging sites were identified on the Erosion and Sedimentation Control Plans. Item # 8 - Provide design calculations for temporary sediment traps, channels and swales, etc. The design criteria/calculations for the restoration of Salem Creek and the tributaries were included in the Final Design Report. Design calculations for the Park View Street WQ Pond storm swales (inlet and outlet) are attached. Design calculations for the sediment basins in the floodplain wetland and water quality pond areas are also attached. Stabilization of storm drain outfalls will include placement of graded stone (i.e., 12 -18 inches diameter) along the outfall channels from the end of the existing storm drain pipes to the edge of water. The Contractor has been directed that stabilization of all outfall channels should be completed in accordance with specifications outlined in Section 6.15 = Surface Stabilization: Riprap and Section 6.41- Outlet Protection: Outlet Stabilization Structure of the North Carolina Erosion and Sediment Control Design Manual. Item #9 - Provide stabilization below all relocated pipes and disturbed drainageways. This comment wasalready addressed in the original Construction Specification documents (see response to Item #8 regarding stabilization of outfall channels). Item "# 10 - Provide details and specifications for all channel liners/matting. The Construction Specifications document does not limit the contractor to a specific product. However, we have provided guidance by indicating the type of erosion control blankets, channel liners, etc. we would find acceptable for this project. The following was included in the Specifications document: "Any erosion control blankets utilized shall be composed of organic geotextile fabric with biodegradable or photodegradable netting. Approved erosion control blankets include Bon Terra C2 Erosion Control Blankets, American Excelsior Curlex Blankets, or an approved equivalent." "Any channel liner utilized shall be composed of a geotextile liner made of woven or non-woven monofilament yarns that meets the following requirements - thickness 20 - 60 mils, grab strength 90 -120 lbs, conforms to ASTM D-1682 or ASTM D-177 and has an EOS no larger than U. S. Standard Sieve no. 70 (0.21 mm) and a total open area of filter not exceeding 10%." Page 4 Mr. Keith Huff July 20, 2003 In addition, I have attached the details and specifications provided by North American Green and Bon Terra America for your review. Item # 11 - Show the location of all construction entrances. All construction entrances including external (i.e., ingress and egress to public roads), as well as internal access points are shown on the sediment and erosion control plans. Section 4 - Pollution Control, of the Construction specifications document directs the Contractor to provide stabilized construction entrances at all external access points - "This work shall consist of installing a stabilized construction entrance at all points of ingress and egress from public roads." Item #12 - Show all sediment and erosion control measures below work to be done in Phase 2. The construction plans have been revised to incorporate the measures recommended by Land Quality. Item # 13 - The sediment and erosion control plan states that the thalwegs will be excavated in the existing channel. This work must be done, in the dry. The changes to the existing channel profile referred to in the sediment and erosion control plan include placement of rock sills to create coarse riffles and excavation of the streambed necessary to construct the rock vanes in the meanders and the cross vane at the sewer crossing. If Land Quality requires that this work be completed in the dry Salem Creek will have to be dewatered with a pumped diversion. Item #14 - All clear water pump arounds must empty below the lower dike in the pump around onto a stable surface. An erosion control device, which has been designed, must be placed at the lower end of the work area. All clear water pump arounds will empty onto a stable surface. The sediment and erosion control plans and details have been revised to include installation of in-stream dikes at the downstream end of all tributary channels (i.e., Stadium Branch, the University gully channel, and the unnamed tributary adjacent to Vargrave Street) where backfilling operations will occur. All work on the relocated channels/storm swales will occur in the dry. The in-stream stone dikes and pump diversions will be installed and functioning during the new channel tie-in and backfilling of the existing channel. The in-stream stone dikes and pump diversions will remain in place until all disturbed areas upstream have been stabilized or the channel in the location of the structure is backfilled. Given the length of channel associated with these tie-in and backfilling operations it is anticipated that the longest period these measures will be in place for a given tributary channel is 2 - 3 days. Item # 15 - The construction entrance, where trucks will be leaving as they remove the debris landfill, must be a minimum 100 feet in length. The Contractor will be directed to ensure that those trucks exit via the southern (upper) construction access along Stadium Drive. Page 5 Mr. Keith Huff July 20, 2003 Item # 16 - All sediment and erosion control devices must meet the standards in the North Carolina Erosion and Sediment Control Design Manual. The Maryland sediment and erosion plates included in the original submittal have been replaced with sediment and erosion plates that meet North Carolina standards and specifications. I hope that this response addresses Land Quality's comments and request for additional information. Please feel free to contact me if they have any questions or need additional information. Sincerely, IT Rocky O. Powell Principal C w/o attachments Mr. Charles Anderson Method 1 - Design Calculations for Temporary Sediment Basins in Water Quality Pond Areas Given: Site Data: Drainage Area Off-site drainage area = 0.35 acres On-site drainage area = 1.25 acres Total drainage area = 1.60 acres Disturbed area = 0.57 acres SCS Curve Number Wooded (fair) B soils 22% x 66 = 1452 Newly graded B soils 78% x 89 = 6942 Average CN 8394 _ 100 = 84 Area available for basin = 0.57 acres Storm Data: 2-yr, 24-hr rainfall depth = 3.5 inches Volume of sediment to be stored: Vc = 18TA °.84 Vc = 18 (30) (1.25) 0.84 Vc = 18 (30) (1.21) Vc = 653.4 ft3 Volume of storm water to be treated: Soil storage capacity S = 1000/CN -10 S = 1000/84 - 10 S=11.9-10 S = 1.9 inches Estimated runoff depth Q*=(P-0.2 S)2 (P + 0.8 S) Q*=L3.5-0.2 1.9)]2 [3.5+ 0.8 (1.9)] Q* = (3.5 - 0.38) 2 (3.5+1.52) Q* = 9.73/5.02 = 1.94 inches Volume of storm water to be treated Vs = 3630 Q* A Vs = 3630 (1.94) (1.6) Vs = 11,267.5 ft Storage Volume Data: Storage Volume Required Provided Sediment Storage 653.4 ft 2,875 ft Storm Water Treatment 11,267.5 ft' 21,954 ft Total Storage Volume 11,920.9 ft 24,829 Method 1 - Design Calculations for Temporary Sediment Basins in Floodplain Wetland Area Given: Site Data: Drainage Area Off-site drainage area = 5.6 acres On-site drainage area = 7.3 acres Total drainage area = 12.9 acres Disturbed area = 7.3 acres SCS Curve Number Open space B soils Newly graded B soils Average CN 43.3% x 69 = 2994.6 56.6% x 89 = 5037.4 8032.0 _ 100 = 80.32 Area available for basin = 2 acres Storm Data: 2-yr, 24-hr rainfall depth = 3.5 inches Volume of sediment to be stored: Vc = 18TA °-&3 Vc = 18 (30) (7.3) 0-84 Vc =18 (30) (5.3) Vc = 2,868 ft Volume of storm water to be treated: Soil storage capacity S = 1000/CN -10 S = 1000/80 -10 S = 12.5 -10 S = 2.5 inches Estimated runoff depth Q*=(P-0.2S)2 (P + 0.8 S) Q* _ [3.5 - 0.2 (2.5)1 2 [3.5+ 0.8 (2.5)] Q*=(3.5-0.5)2 (3.5+2) Q* = 9.0/5.5 = 1.64 inches Volume of storm water to be treated Vs = 3630 Q* A Vs = 3630 (1.64) (12.9) Vs = 76,796 W Storage Volume Data: Storage Volume Required Provided Sediment Storage 2,868 15,400 ft Storm Water Treatment 76,796 ft 77,800 ft Total Storage Volume 79,664 ft 93,200 Design Calculations for Park View Street Storm Swales 1. Peak Discharge Estimates (SCS Peak Discharge Method) Solving for Peak rate of runoff for the 10-year frequency, 24-hr storm - Qp 10, 24 Given: Location: Winston-Salem, NC Land Use by Soil Group: Impervious (Parking lots, sidewalks, roofs, streets, etc.): Soil Group B Open space, lawn (Fair condition): Soil Group B Total Area 12.3 acres 12.3 acres 24.6 acres Area Watershed Slope: 10% Ratio of drainage area to ponded area (1-acre depression near center of watershed, plus 1-acre water quality pond at downstream end of watershed) 12:1 Hydraulic Length: 1600 ft 75% of hydraulic length modified 50% impervious Calculations: 1) Average Curve Number (CN) % drainage area x CN Impervious 50% x 98 = 4900 Open space 50% x 69 = 3450 8350 CN = 8350 = 100 = 83.5, using 85 2) Runoff Depth a. Rainfall amount for 10-yr, 24-hr storm, Greensboro, NC = 5.1 inches b. Runoff depth = 3.37 inches 3) Peak runoff rate with adjustment for watershed shape a. Equivalent drainage area = 30 acres b. Q1 = 30 cfs/inch x 3.37 inches= 101 cfs c. Q2 = 101 x 24.6/30 = 82.8 cfs 4) Peak discharge rate adjusted for percent impervious area and percent hydraulic length modified a. Impervious factor = 1.24 (50% impervious) b. Hydraulic length modification factor = 1.48 (80% modified) c. Q3 = 82.8 x 1.24 x 1.48 = 151.95 cfs 5) Peak discharge rate adjusted for average watershed slope a. Slope factor =.92 (10% average slope) b. Q4 = 151.95 x .92 = 139.8 cfs 6) Peak discharge adjusted for surface ponding a. Ponding factor= .65 (15:1, throughout watershed, 10-yr) b. Qp 10,24 = 139.8 x.65 = 90.9 cfs 2. Channel Hydraulics Calculations Given: Channel Design Characteristics: Shape - Trapezoidal channel Bottom width = 5.0 ft Side Slopes = 4:1 Channel gradient = 0.5% Manning's n = 0.025 (medium effect - grass/weeds) Peak Discharge: Qp 10,24 = 90.9 cfs Calculations: Channel Flow Characteristics: Cross Sectional Area = 20.6 ft2 Depth. = 1.7 ft Depth,= 1.1 ft Width = 18.8 ft Hydraulic radius = 1.1 ft Flow Hydraulics: Velocity = 4.4 ft/sec Shear stress = 0.33 lbs/ft2 Shear velocity = 0.41 ft/sec Froude number = 0.55 (subcritical flow) Unit stream power = 1.502 lbs/ft/sec Threshold grain size = 19.6 mm (3/4 inch) 3. Maximum Allowable Design Velocity/Shear Stress Determination Given: Channel Slope - 0.5% Soil Characteristics - easily erodible, non-plastic sands and silts Proposed Channel Lining - geotextile matting (North American Green C 125BN or S75 or equivalent) and grass (tall fescue(bluegrass mix) Calculated Velocity Qp 10,24 = 4.4 ft/sec Calculated Shear Stress Qp 10,24 = 0.41 lbs/ft2 Maximum Allowable DesigLi Velocity/Shear Stress: Stage 1 - (Immediately after construction - geotextile lining only) = 1.55 - 2.25 lbs/ft2 (North American Green specs for types of synthetic matting proposed) Stage 2 - (tall fescue/bluegrass cover) = 4.5 ft/sec (Table 805a, NC Erosion and Sediment Control Planning and Design Manual) Run Park View Street Storm Swale -10yr, 24 hr storm 0 -2 -4 c -6 0 as -8 15- -10 -12 -14 Width from River Left to Right (ft) section: I Run Park View Street Storm Swale - 10yr, 24 hr storm Salem Creek description: height of instrument (ft) omit distance FS FS F S' W fpa channel Manning's pt. (ft) (ft) elevation bankfull = ? (ft) slope (%) "n" -10 57 -10 -10.27 -8.79 =] S -12 notes - -fin. -' eat -12 0 77 ;a -10 10 dimensions 20.6 x-section area 1.1 d mean 18.8 width 19.3 wetP 1.7 d max 1.1 h yd radi 3.2 bank ht 17.2 w/d ratio 100.0 W flood prone area 5.3 ent ratio hydraulics 7CF 4.4 velocity (ft/sec) 90.7 discharge rate, Q (cfs) 0.33 shear stress ((Ibs/ft sq) 0.41 shear velocity (ft/sec) 1.502 unit stream power (lbs/ftfsec) 0.55 Froude number 10.6 friction factor utu* I efl 19.6 threshold grain size (mm) BonTerrais a trusted name throughout the world for,_qualify'erosion control-products made from straw, coir fiber, and synthetic fibers. We know that permanent, erosion control is best achieved with permanent vegetation. Nature's way is to heal erosion through the establishment of living matter, much in the way wounds of other organisms are healed through biological processes. BonTerra Erosion Control Blankets provide protection from erosion and stimulate healing through rapid growth of-vegetation. Not all erosion is the same. Soil type, length of slope, moisture availability, fertility, and degree of slope are only afewof the variables to consider when planning erosion prevention and remediation measures. Performance parameters are the best indicators,q whether or not an erosion control product will work ona specificjob site. Choosing an erosion control product according to its performance capabilities rather than by its components, thickness, and tit"eight, is a best management practice (BMP). S' Effectively control these tough situations......, e Rainfall: Absorb and dissipate energy released by falling rain. Protect fertilizer and soil while keeping seeds in place. e Runoff Water: Reduce the velocity of runoff water. The three dimension blanket matrix provides a pad for surface movement of runoff with minimum disturbance under the blan- ket while absorbing moisture for release to the soil after the runoff event. • Drought Conditions: Moderate soil temperature, conserve moisture in the soil to nurture vegetative cover. • Poor Soil Fertility: Keep fertilizer and soil enhancements in place and available for rapid plant growth Promote devel- opment of sod and contribute to good soil health through de- composing mulch. e Wind Erosion: Blankets are sewn and stay in place during intermittent windy conditions. Preseeded blankets are available in S2`C2, CS2, CP2, SFB and SFB 12. For use as a permanent erosion control blanket on slopes, in high velocity channels and as a shoreliner on lakes, lagoons, and reservoirs with fluctuating pool levels. 100% synthetic fibers, 10-oz/SY, long lasting UV stabilized netting on both sides. (also available: 8 oz/sy SFB8. Please call for specs) C2 For use as a channel liner with high velocity intermittent flows. Center runs on grassed waterways, drainage ditch lining, stream bank rehabilitation. Also used as an erosion control blanket on extreme slopes and very harsh sites. 100% natural coir (coconut) fiber, long lasting UV stabilized photodegradable netting on both sides. Mass/UnitArea:10ozJSYmin Thickness:.30 in. Mass/UnitArea: 8 ozJSYmin Tensile Strength: 226x144 lb.ft. Thickness:.25 Elongation: 341/642% Tensile Strength: 230A 38 lb.ft. Flexibility: 19910x15600 (mg-cm) Elongation: 320/ox22% Flow Velocity: 20 fps Flexibility: 6260x16790 (mg-cm) Permissible Shear Stress: 5.5 Ibs/sq.ft. Flow Velocity: 15 tps Porosity: 95% (calculated) Permissible Shear Stress: 3 Ibs/sq.ft. Manning's N-Value: 0.0243 Manning's N-Value: 0.0183 UVI Stability: 90% Size: 7.5 ft x 90 ft = 75 SY Size:7.5 ft x 90 ft = 75 SY "C° Factor. 0.003 "C" Factor. 0.003 Performance Guarantee BonTerra America, Inc. hereby warrants the performance of its product sold hereunder for a period of forty-five (45); days after installation, provided the BonTerra productused.in the application was'.designed and specified by a qualified . engineer: using the BonTerra selection guide and published performance parameters of BonTerra products. Seedbed preparation and product installation must be in accordance.with BonTerra installation instructions. All claims under this warranty must be made within ten (10) days- after the failure has occurred and must be approved by BonTerra. Failure is exclusively defined as excessive soil loss from a slope or channel. 11NORTH AMERICAN GREEN Product Application Matrix: Temporary Erosion Control Blankets Temporary Composition Roll Dimensions Mass Per Unit Area Permissible Maximum Flow Suggested Performance Product Name Width x Length ASTM D5261-92 Shear Stress Velocity Application Testing (functional longevity) feet oz/yd' Ibs/ft' feeUsecond Information (meters) (kg/ml (Pascals) (meters/second) 1 photodegradable S75` net on topside 6.67 x 108 8 Bare Soil/ 1.55 5 4:1-2:1 slopes Texas Transportation Institute` straw fiber matrix (2.03 x 32.92) (0.27) (74.40) (1.55) low flow channels Utah State University (10 months) 1 photo accelerated DS75 photodegradable net on topside 6.67 x 108 8 Bare Soil/ 1.55 5 4:1-2:1 slopes S75 Performance Equivalent straw fiber matrix 2.03 x 32.92 ( ) (0.27) (74.40) (1.55) low flow channels (45-60 days) 1 woven biodegradable S75 BN natural organic fiber net on topside 6.67 x 108 9.28 Bare Soil/ 1.55 . 5 55) (1 4:1-2:1 slopes fl l h l Utah State University T T i ' straw fiber matrix (2.03 x 32.92) (0.31) 74.40 (74.40) ) . ow ow c anne s exas ransportat on Institute (10 months) S150 2 photodegradable nets straw fiber matrix 6.67 x 108 8 Bare Soil/ 1.65 6 3:1-1.5:1 slopes Texas Transportation Institute' (10 months) (2.03 x 32.92) (0.27) (79.20) (1.86) moderate flow channels Utah State University 2 photo-accelerated DS150 photodegradable nets straw fiber matrix 6.67 x 108 (2.03 x 32.92) 8 (0.27) Bare Soil/ 1.65 (79.20) 6 (1.86) 3:1-1.5:1 slopes moderate flow channels S150 Performance Equivalent (45-60 days) 2 woven biodegradable S150 BN natural organic fiber nets .6 10.7 Bare Soil/ 1.65 . 3:1-1.5:1 slopes Utah State University Mountain Plains Consortium' straw fiber matrix x 3292 ( ) (0.36) 79.20) (79.20) 86 (1) moderate flow channels Texas Transportation Institute' (10 months) 1 photodegradable UV stabilized top net SC150 1 photodegradable bottom net 6.67 x 108 8 Bare Soil/ 1.80 8 2:1-1:1 slopes Texas Transportation Institute 30% coconut/70% straw (2.03 x 32.92) (0.27) (86.40) (2.48) medium high flow channels Utah State University fiber matrix (24 months) 2 woven biodegradable SC150 BN natural organic fiber o nets a 30 /o coconut/70/o straw 6.67 x 108 (2.03 x 32.92) 10.7 (0.36) Bare Soil/ 1.80 (86.40) g (2.48) 2:1-1:1 slopes medium high flow channels Utah State University Mountain Plains Consorium' * fiber matrix University of Hawaii (18 months) C125 2 photodegradable UV stabilized nets 6.67 x 108 8 Bare Soil/ 2.25 10 1:1 and steeper slopes Utah State University Drexel University' coconut fiber matrix (36 months) (2.03 x 32.92) (0.27) (108) (3.10) high flow channels University of Hawaii* 2 woven biodegradable G125 BN natural organic fiber nets 6.67 x 108 03 x 32 92 (2 10.7 (0 36) Bare Soil/ 2.25 108 10 1:1 and steeper slopes Utah State University coconut fiber matrix . ) . . ( ) (3.10) high flow channels (24 months) flLE COPY Division of Water Quality 401 Wetlands Unit Attention: Todd St. John 1650 Mail Service Center Raleigh, NC 27699-1650 0 Winston-Salem Public Works Department Streets Division City of Winston-Salem P.O. Box 2511 Winton-Salem, NC 27102 Tel 336.748.3070 Fax 336.727.2361 Re: Permit review application submittal for the Civitan Park Stream Restoration Project. Dear Mr. St. John, 0-8 0 The City of Winston-Salem respectfully submits the following information for review, regarding the Civitan Park stream restoration project. Enclosed documents include: 404/401 Pre-Construction notification form and six copies of the Civitan Park construction designs (One copy of the plans where distributed to the representative of each Permitting Agency at the Civitan Park site visit on 7/10/2003). Also enclosed is a check for $475.00 for review fees. If you have any questions or need additional information, feel free to give me a call. Sincerely, Keith Huff &MMOS/401 ATMQU TAG 'c? Assistant Streets Director City of Winston-Salem Stormwater Department 336-747-6962 ar ORY) ?- C 1,01) a' m y` / J coR? N Tributary Pump Diversion p a U) Z N -- - -- - - -- p? N N AV. to (0 -, Construction Access " o M Staging/Stockpile Area W N m and ?• mil/O 3 ? ? I \` % ' x g J ?V i . i ?/• ?I , i ? ? ? % ¢ Construction Access h Tree_ \ j c gl ,? 1c ? i ' ? c y•. SsVt Area ce) 41 -ici acv J /l d ¢:; wo?: ?ur?-.? 1 ! aw t G 1?1 , ,`J 'n a Stagmg/StockpileArea l t dw bj-° r R ?~ M m * a tp? ,r3 f? ' ?g m s x, . e \ p,? x , ?'-Try=. q ?, - '. -? ?.. M r '"•. • %; ? Tom/ s' 0oy?? ?? eo ? i? ??\. >? 3? r 1 - ?' )k t -mo # ? . 'l S r "1' r M15 ur 4__. /ni a 31? X tti -7- Dike In-stream State t F g? Gl ?qy 40 ?l r i Imo' \ wM /,'f i/ jC,??? (-?\ `.•? i.r 0 f/1 0 A --Z R -be 'gave z- 4 v.. '?¢+ 9ti a'- _ s .._ I '_r LOD LO b 1 - Staging Area z - _ _ ^ , • In-Stream Store Dike a Sand Bag/Stone Dike 3 zx #' } U e J Construction Access 47 - -Tn6 .. etory Pomp Diversion ------ w M. • `s CD ¦ ,fit -? f' ` Ud r ?Mr ti Yw rln 00201M -c«to3 ,J Sand Bag/Stone Dike J Ict N ? q 5 llCL Zr; 6 J Y (n a ?F C 0 m <I M Tributary Pump Diversion x tv T d 04 t0 ,?. 1 c ?_ lC N N I ) N L I L vi' d at ! . lAD S II?I1 r E 3 ¢ ? iii ?\ T Construction Access s WD Construction Access ``? i`uT -? ' ` l;1{ 1\3?' ^ N iUFf y Staging/Stockpile Area {?' a ?Yyx \ \ , .? Q N is I ? _.. Fs E V a4 T '? v ?' ; i I I ? t ! emporary Sediment Basm .`P? o Tree Save Area LAD I '? ?• r q ? ? A y ti, Construction Access e 1 ? ) E / C A +?t C _ IF esce S .r--13f" S? A a m i iq i y o d ArC / Sand BagtStose Dike' ( 0 l y 0 _ I I II O T C? iR?G f ' /? ice. O F \ `I / <• 6J cod all 771 /,sc1-?. ' I I FIE S 6 T? /,' r r I:}C4 I ?,yV+A . .ry - /,39 ?_ 4k .'M t _I E I if V4. _ L4 In-Strom Stone Dike M . F-W -? j In-Stream Stone Doe g ,\ m t, i\\? i q /?'Y Tributary Pump Diversion (J ' R CREEKS CONSULTING ice, l 00ft? 00201X1 ? rse ors a a? _a Tributary Pump Diversion LOD- = r T ?' a a ?. L Tree Save Area i +iaa? c i `2b v4/ C Y 51 - ? IAD / _ Tributary Pump Diversion ry Sept Basin Tcfl?PonrY Sedime nt Basin ` v E c vE c vE c v E c vE c v__E c R_E c v E c vE c v__E c R_E c v E c vE c 3 vR-31 _? c R_E c v E c vE c v__E c R_E c i : _ v? __ c R a? 1 i f Tres Save Ari Z cn M S N t?pp Cl) NN ?a Ez? a d_YNam 04 iLJ d N C: i? i Office Use Only: Form Version February 2002 USACE Action ID No. DWQ No. If any particular item is not applicable to this project, please enter 'Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing *'/I 'r 1. Check all of the approval(s) requested for this project: QP? ® Section 404 Permit NSA Section 10 Permit ® 401 Water Quality Certification N/A Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: NWP-27 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? H. Applicant Information 1. Owner/Applicant Information Name: City of Winston-Salem, NC Mailing Address: Storm Water Department P.O. Box 2511 Winston-Salem, NC 27102-2511 Attn: Mr. Keith Huff Telephone Number: (336) 747-6962 Fax Number: (336) 727-2361 E-mail Address: 2. Agent Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Mr. Keith Huff Company Affiliation: City of Winston-Salem, NC Mailing Address: Storm Water Department P.O. Box 2511 Winston-Salem. NC 27102-2511 Telephone Number: (336) 747-6962 Fax Number: (336) 727-2361 E-mail Address: Page 1 of 10 III. Project Information Attach a vicinity map clearly showing the lwation of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Salem Creek - Civitan Park Stream Restoration 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): N/A 4. Location County: For oh Nearest Town: Winston-Salem Subdivision name (include phase/lot number): N/A Directions to site (include road numbers, landmarks, etc.): From NC Route 52N exit onto Stadium Drive, go east to intersection of Stadium Drive and Martin Luther King Drive, turn right on MLK Drive, go south to Diggs Blvd. Turn right on Diggs Blvd. Enter parking lot at athletic fields on west side of Diggs Blvd. 5. Site coordinates, if available (UTM or Lat/Long): N 36° 05.11.79', W80° 13.25.07' (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct water body.) 6. Describe the existing land use or condition of the site at the time of this application: _ City parkland i.e., ball fields and hike bike trai) and Duke Power distribution and transmission towers are on the south side of stream. Winston Salem State University Administration Building and parking lots are on the north side of the stream. 7. Property size (acres): 48 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Salem Creek tributary to Muddy Creek, downstream of Salem Lake. 9. River Basin: Yadkin-Pee Dee River Basin Page 2 of 10 (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.ne.us/admin/mapss/.) 10. Describe the purpose of the proposed work: Restore habitat and reduce sediment loadin s to Salem Creek and Muddy Creek by restoring stable channel geometM grading and stabilizing eroding banks with native wood vegetation. Reduce pollutant loadings to Salem Creek and restore riparian habitat by restoring/creating floodplain wetland systems, constructing wetland/water quality ponds, and establishing a riparian forest and native meadow buffer. 11. List the type of equipment to be used to construct the project: Tracked-excavator with hydraulic thumb, front-end loader, dump truck. 12. Describe the land use in the vicinity of this project: er?/parkland, Winston-Salem State University, Bowman Gray Memorial Stadium, and surrounding residential/commercial development. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. A pre-application meeting was held on-site April 4, 2002 to present the project to the permitting agencies. The following persons were in attendance: Mr. John Thomas, USACOE; Ms. Cindy Karoly; NCDWQ, Ms. Crystal Couch and Mr. Keith Huff, City of Winston-Salem; Mr. Charles Anderson, Pilot View, Inc.; and Mr. Rocky Powell, Clear Creeks Consulting. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None anticipated. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream Page 3 of 10 evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a brief written description of the proposed impacts: Temporary impacts include: 1) removal of existing vegetation on upper point bars to allow grading and sloping of the streambanks and construction of floodprone area, and 2) dewatering and diversion of the baseflow to allow work to proceed in the dry. Permanent impacts include: 1) excavation of the streambed to establish a new channel profile (pools and riffles), 2) placement of fill - a) to construct point bars and toe benches (inner berms) along the toe of banks to narrow and deepen the baseflow channel, improve sediment transport capacity and protect the banks from scour, b) to construct a cross vane upstream of sewer crossing to divert flow to the center of the channel and away from the stream banks, and c) to construct rock vanes at key points along the channel to deflect flows away from the banks and toward the center of the channel: and 3) placement of fill in old stream channels and gully to create point bars, floodplain and wetland/water quality ponds. 2. Individually list wetland impacts below: Wetland Impact Area of Located within Distance to Site Number Type of 100-yea Nearest Type of Wetland*** (indicate on Impact acres) (acres) Fooodplain ** Stream (linear ma) (yes/no) feet) Grading - Instream - Rtverine W1 Temporary 0.03 Yes lower point (unconsolidated shore) bars Mechanical Instrea W2 Clearing, 0.08 Yes . upper point Palustrine - (scrub- Grading - bars shrub) Temporary * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at httn://www.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of all existing wetlands on the property: 0.41 acres Total area of wetland impact proposed: 0.11 acres (temporary impacts) Page 4 of 10 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Length of Average Width Perennial or Site Number Type of Impact Stream Name** of Stream (feet) Intermittent? (indicate on Impact* (linear Before Impact ma) feet) S l Fill - 2525 Salem Creek 50-65 bankfull/ Perennial Permanent 30-55 baseflow S2 Fill - 1030 Stadium Branch 15 bankfull/ Perennial Permanent 5 baseflow S3 Fill - 100 Unnamed Tributary 15 bankfull/ Intermittent Permanent 5 baseflow * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.uses.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com, www.mnquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 3655 feet 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact Site Number (indicate on map) * Type of Impact* Area of Impact (acres) Name of Waterbody (if applicable) Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc.) * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ® uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): Page 5 of 10 Construction of two wetland/water qualityponds involves: 1) multi-level excavation to create plunge pools and freshwater emergent marsh areas: 2) backfill with to soil/organic mixture-, 3) installation of a spillway designed to retain a permanent pool (i.e., 6 inches in the marsh and 2 feet in the plunge pools), detain runoff from frequent storms (i.e. '/2 inch of runoff)and safely convey all other flows to a stabilized outfall channel and Salem Creek; and 4) planting with emergent and woody wetland vegetation (i.e., herbaceous, shrubs and trees Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Storm water retrofit to provide water quality management of storm water runoff from Winston-Salem State University pro ga. Size of watershed draining to ponds: Area 1 = 11.56 acres: Area 2 = 5.5 acres Expected pond surface area: Area 1 = 0.43 acres (18,775 sq ft): Area 2 = 0.24 acres X10,400 sq ft.) VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The general restoration approach includes reconstructing Reach 1 with a more regular planform, reconstructing Reach 2 with a meandering channel routed along the left floodplain, and maintaining Reach 3 with its existing meander geometry but a narrower cross-section. The old channel in Reach 2 will be backfilled to create a wetland/water quality pond to manage storm water runoff from the University parking lot. In addition, the rubble landfill in the left floodplain will be removed and a large wetland system constructed in its place. Stadium Branch will be rerouted through this wetland as a restored meandering E channel. The Unnamed Tributary will be restored and routed through the wetland as well, joining Stadium Branch upstream of the trail. The lower section of the Unnamed tributary will be restored and relocated to provide a more appropriate confluence with Reach 3 of Salem Creek. The gully adjacent to the University parking lot will be stabilized and rerouted through a wetland/water quality pond constructed in the right floodplain joining Salem Creek in the lower section of Reach 3. The temporarMpacts associated with mechanical clearing are limited to those point bar areas where grading is essential to establish stable channel eg_ometry. All disturbed areas im ap cted within the limits of the project will be seeded with native grasses and planted with native trees and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with grasses and clover. The permanent impacts associated with fill will run almost the entire len h of the project. The majority of the fill placed will involve backfilling of old channels after new channels of been constructed. Some sections of the existing channels that remain will be reconstructed by raising Page 6 of 10 the streambed to reconnect the channel to its floodplain and reconstructing narrower cross- section to improve habitat and sediment transport capacity as channel stable. To narrow the existing Salem Creek channel toe benches will be constructed along the widest sections of the channel. In addition, rock vanes and a cross vane will be constructed at key points along the channel to divert flow away from the stream banks. Avoidance of these impacts would be inconsistent with many of the objectives of this project including: reconnecting the stream channels with their floodplain, improving habitat by constructing a narrow and deep baseflow channel, improving sediment transport capacity, reducing sedimentation, and protecting the stream banks from scour. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.ne.us/ncwetlands/strrngide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. Given the type of project it is not anticipated that mitigation will be required. In fact, the project itself could be viewed as mitigation for historic impacts to Salem Creek. As a result of this project 5240 feet of unstable stream channel will be restored, 5.2 acres of wetlands Page 7 of 10 will be created, 17.5 acres of riparian forest and native meadow buffer will be created and sediment and nutrient loadings to Salem Creek resulting from eroding banks and upland storm water runoff will be significantly reduced. In addition, the City will establish a conservation easement that permanently protects the riparian corridor along this reach of Salem Creek. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. The 401/Wetlands Unit will notify applicants early in the review process if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.statemc.us/wrp/index.htrn. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ® No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes E] No If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Page 8 of 10 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify)? Yes ? No ® If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* (s uImact are feet) Multiplier Mitig t on 1 3 2 1.5 Total * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Not an hp .cable. XII. Sewage Disposal (DWQ Only) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Not applicable. XIII. Violations (DWQ Only) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No Page 9 of 10 XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 10 of 10 F? Variables Existing Proposed USGS Station Reference Channel Reach Reach Valley slope .004 .004 .0035 Average slope .0028 .0028 .0026 S. Pool slope .00063-.0019 .001-.0025 .0007-.0029 Spool .001 .0017 Ratio of pool .23-.68 .36-.89 .27-1.12 slope to .4 (.66) average slope $ ool/$bkf Maximum pool 7.4-11.1 11.8 7.6-8.2 depth d ool 9.4 7.9 Ratio of pool 1.6-2.4 1.49 1.49-1.61 depth to (1.8) (1.51) average bankfull depth d ool/dbkf Riffle slope .0035-.01 .005-.009 .003-.0084 0057 .0048 Ratio of riffle 1.25-3.57 1.79-3.2 1.15-3.23 slope to (2.04) (1.85) average slope Pool width 46.8-66.1 56 36.8-44.3 W pool 53.3 42.2 Ratio of pool .87-1.24 1.12 .93-1.12 width to (.998) (1.07) bankfull width W ool/Wbkf Particle size distribution of channel material: D 16 0.183 mm 0.167 mm D 35 0.33 mm 0.35 mm D50 0.6 mm 0.9 mm D84 12 mm 32 mm D 95 76 mm 45 mm Particle size distribution of ar material: D 16 0.34 mm 0.4 mm D35 2.36 mm 1.13 mm D50 4.4 mm 4.36 mm I D 84 18 mm 15.1 mm D 95 52 mm 25 mm Largest size at 68 mm 28 mm toe of bar Morphological Characteristics of Salem Creek at Civitan Park Reach 2 and Mill Creek Reference Reach Variables Existing Proposed USGS Station Reference Channel Reach Reach Stream types E4/G4 E4 E4 Drainage area 42.5 42.5 46 mil Bankfull width 37.7-43.4 50 38.4-41.1 Wbkf 40.3 39.5 Bankfull mean 5.7-6.6 5.6 5.1-5.6 depth dbkf 6.2 5.33 Width/depth 5.7-7.4 8.9 7.0-8.1 ratio Wbkf/dbkf 6.57 7.5 Bankfull cross- 275.8-298 280 202.8-238.8 sectional area (275) (223.5) flbkf Bankfull mean 6.85 6.7 7.96 velocity Vbkf Bankfull 1885 1885 1779 discharge (cfs) Qbkf Bankfull 8.0-9.7 7.9 6.9-8.8 maximum (8.8) (7.9) depth dmax Width of flood 300 300 500+ prone area W a Entrenchment 8 6 12.2 ratio W a/Wbkf Meander 160-540 480-500 200-220 length Lm 305 Ratio of 3.97-13.4 9.6-10 5.2-5.73 meander (7.6) length to bankfull width Lm/Wbkf Radius of 95-100 120-160 50-92.5 curvature Rc Ratio of radius 2.35-2.48 2.4-3.2 1.3-2.4 of curvature to bankfull width Rc/Wbkf Belt Width (Wblt) 70 170 75 Meander width 1.74 3.4 1.95 ratio Wblt/Wbkf Sinuosity 1.02 1.23 1.35 (stream length/ valley distance) Variables Existing Proposed USGS Station Reference Channel Reach Reach Valley slope .004 .004 .0035 Average slope .0022 .0015 .0026 Ste, Pool slope .00074-.0014 .00042-.0009 .0007-.0029 (spool) .0011 .0017 Ratio of pool .34-.64 .25-.66 .27-1.12 slope to .5 (•66) average slope S ool/Sbkf Maximum pool 6.7-7.3 11.8 7.6-8.2 depth d ool 7.0 7.9 Ratio of pool 1.01-1.18 1.49 1.49-1.61 depth to (1.1) (1.51) average bankfull depth d ool/dbkf Riffle slope .0026-.018 .0027-.005 .003-•0084 009 .0048 Ratio of riffle 1.18-8.18 1.79-3.3 1.15-3.23 slope to (4.09) (1.85) average slope Pool Width 41.0-44.4 56 36.8-44.3 W ool 42.9 42.2 Ratio of pool 1.12 .93-1.12 width to 1.06 (1.07) bankfull width W ool/Wbkf Particle size distribution of channel material: D 16 0.288 mm 0.167 mm D35 0.42 mm 0.35 mm D50 0.6 mm 0.9 mm D 84 76 mm 32 mm D 95 222 mm 45 mm Particle size distribution of bar material: D 16 0.34 mm 0.4 mm D35 2.36 mm 1.13 mm D50 4.4 mm 4.36 mm D 84 18 mm 15.1 mm D 95 52 mm 25 mm Largest size at 68 mm 28 mm toe of bar Morphological Characteristics of Salem Creek at Civitan Park Reach 3 and Mill Creek Reference Reach Variables Existing Proposed USGS Station Reference Channel Reach Reach Stream types E4/C4 E4 E4 Drainage area 42.5 42.5 46 mil Bankfull width 48.7-59.4 50 38.4-41.1 Wbkf 54.3 39.5 Bankfull mean 5.2 5.6 5.1-5.6 depth dbkf 5.33 Width/depth 10.44 8.9 7.0-8.1 ratio Wbkf/dbkf 7.5 Bankfull cross- 278.5-298 280 202.8-238.8 sectional area (285.7) (223.5) Abkf Bankfull mean 6.59 6.7 7.96 velocity Vbkf Bankfull 1885 1885 1779 discharge (cfs) Qbkf Bankfull 8.1 7.9 6.9-8.8 maximum (7.9) depth dmax Width of flood 300+ 300+ 500+ prone area W a Entrenchment 5.5 6 12.2 ratio Wf a/Wbkf Meander 330-350 330-350 200-220 length Lm 340 Ratio of 6.07-6.45 6.6-7 5.2-5.73 meander length to bankfull width Lm/Wbkf Radius of 110 110 50-92.5 curvature Rc Ratio of radius 2.03 2.2 1.3-2.4 of curvature to bankfuli width Rc/Wbkf Belt width (Wblt) 170 170 75 Meander width 3.13 3.4 1.95 ratio Wblt/Wbkf Sinuosity 1.21 1.21 1.35 (stream length/ valley distance) Variables Existing Proposed USGS Station Reference Channel Reach Reach Valley slope .004 .004 .0035 Average slope .00072 .0013 .0026 So„g Pool slope .00037-.00077 .0007-.0029 (spool) .00057 .0017 Ratio of pool .51-1.0 .28-.59 .27-1.12 slope to .79 .44 (.66) average slope S ool/Sbkf Maximum pool 10.4 11.8 7.6-8.2 depth dPool 7.9 Ratio of pool 2 1.49 1.49-1.61 depth to (1.51) average bankfull depth d ol/dbkf Riffle slope .0012-.007 .0015-.008 .003-.0084 004 .0048 Ratio of riffle 1.09-6.36 1.15-6.46 1.15-3.23 slope to (3.72) (1.85) average slope Pool width 48.7-59.4 56 36.8-44.3 W ool 54.1 42.2 Ratio of pool .896-1.09 1.49 .93-1.12 width to (.996) (1.07) bankfull width W ool/Wbkf Particle size distribution of channel material: D 16 0.181 mm 0.167 mm D 35 0.27 mm 0.35 mm D 50 0.3 mm 0.9 mm D84 1.0 mm 32 mm D 95 6.0 mm 45 mm Particle size distribution of bar material: D 16 0.34 mm 0.4 mm D 35 2.36 mm 1.13 mm D 50 4.4 mm 4.36 mm D 84 18 mm 15.1 mm D 95 52 mm 25 mm Largest size at 68 mm 28 mm toe of bar Morphological Characteristics of Salem Creek at Civitan Park Reach 1 and Mill Creek Reference Reach Variables Existing Proposed USGS Station Reference Channel Reach Reach Stream types E4/C4 E4 E4 Drainage area 42.5 42.5 46 mil Bankfull width 47.3-59.5 50 38.4-41.1 Wbkf 53.4 39.5 Bankfull mean 4.6-5.7 5.6 5.1-5.6 depth dbkf 5.15 5.33 Width/depth 8.3-12.9 8.9 7.0-8.1 ratio Wbkf/dbkf 10.6 7.5 Bankfull cross- 269.4-292.4 280 202.8-238.8 sectional area (280.9) (223.5) Abkf Bankfull mean 6.7 6.7 7.96 velocity Vbkf Bankfull 1885 1885 1779 discharge (cfs) Qbkf Bankfull 7.7-8.1 7.9 6.9-8.8 maximum (7.9) (7.9) depth dmax Width of flood 100-300 200-300 500+ prone area W a Entrenchment 2.1-5 4-6 12.2 ratio Wf a/Wbkf Meander 210-330 480-500 200-220 len th Lm Ratio of 3.5-5.5 9.6-10 5.2-5.73 meander length to bankfull width Lm/Wbkf Radius of 38-62 120-160 50-92.5 curvature Rc Ratio of radius .63-1.04 2.4-3.2 1.3-2.4 of curvature to bankfull width Rc/Wbkf Belt width WbIt 170 170 75 Meander width 2.85 3.4 1.95 ratio Wblt/Wbkf Sinuosity 1.46 1.31 1.35 (stream length/ valley distance t SALEM CREEK - CIVITAN PARK STREAM RESTORATION DESIGN REPORT PREPARED FOR PILOT VIEW, INC. AND THE CITY OF WINSTON-SALEM, NORTH CAROLINA PREPARED BY CLEAR CREEKS CONSULTING JULY 2003 t t t t Table of Contents Project Background Technical Report I. Study Area II. Scope of Studies III. Watershed Characterization A. Physiography and Basin Morphometry B. Climate C. Geology, Soils, and Land Use D. Hydrology 1. Field Calibration of Bankfull Discharge 2. Hydrologic and Hydraulic Studies E. Study Area Site Conditions IV. Channel Morphology and Stability Assessment A. Field Calibration of Bankfull Channel Field Indicators B. Level II - Morphological Description C. Level III - Assessment of Stream Condition D. Findings of Channel Morphology and Stability Assessment V. Reference Reach A. Identifying and Surveying a Reference Reach VI. Design Discharge Estimates A. Regional Curves B. SCS TR-20 Hydrologic Model C. USGS Regression Equations D. Field Calibration of Bankfull Discharge at USGS Gaging Stations on Salem Creek 1 2 2 2 2 4 4 5 5 5 9 9 9 10 10 10 14 14 15 15 16 16 16 t t IJ E. Manning's Equation F. Bankfull Design Discharge Estimates VII. Shear Stress and Sediment Entrainment Analysis A. Sediment Sample Collection Procedures B. Critical Dimensionless Shear Stress Calculation C. Sediment Entrainment Analysis D. Calculations for Salem Creek - Civitan Park Project Reaches VIII. Restoration Approach A. Salem Creek Reach 1 B. Salem Creek Reach 2 C. Salem Creek Reach 3 D. Stadium Branch and Left Floodplain Area E. Unnamed Tributary F. Gully and Right Floodplain Area Environmental Benefits Water Quality Benefits IX. Permitting Issues A. General B. Existing Wetland Resources C. Impacts to Wetlands D. Wetland Impact Avoidance, Minimization and Compensation E. Impacts to Forest Resources F. Impacts to Stream Channel and Aquatic Habitat G. Impacts to Water Quality H. Impacts to Floodplain and Drainage Flow Patterns 16 16 17 17 18 19 19 20 20 21 21 22 23 24 24 25 27 27 27 28 28 29 30 30 31 1 1 t t 1 1 i 1 1 i I. Dust Control J. Equipment Emissions References Appendix A. Gage Calibration Supporting Documentation 1. Data Summaries 2. Cross-Sections B. Channel Morphology and Stability Assessment Supporting Documentation 1. Level II Data Summary 2. Level III Data Summary 3. Sediment Samples Summary 4. Photographic Documentation of Existing Conditions 5. Geomorphic Mapping C. Reference Reach Supporting Documentation 1. Cross-section, Profile, Pebble Counts 2. Photographic Documentation of Existing Conditions D. Restoration Design Criteria Morphological Data Summary Table E. Hydrologic Analysis Supporting Documentation SCS TR-20 Model F. Hydrologic/Hydraulic Analysis Supporting Documentation Information developed by HDR Engineering, Inc. G. Hydraulic Analysis Supporting Documentation 1. HEC-RAS Model - 100-Year Flow Frequency Profiles & Cross-sections 2. HEC-RAS Model - Flows between 1 and 2-Year 31 32 PROJECT BACKGROUND ' The City of Winston-Salem, North Carolina is concerned about stream bank erosion, impacts to water quality, loss of flood storage capacity, damage to public infrastructure, and the loss of public land along Salem Creek in Central and Civitan Parks. Salem Creek is part of the Muddy Creek/Yadkin River system. The main sources of drinking water for residents of the City of Winston-Salem and Forsyth County are the Yadkin River and Salem Lake. The NC Division of Water Quality recently completed a Water Quality Management Plan for the Yadkin-Pee Dee River Basin. The study identified Muddy Creek subwatershed as one of the subbasins having the highest number of impaired stream miles. The Salem Creek/Middle Fork streams were classified as impaired. The Plan recommended that the ' City of Winston-Salem and Forsyth County take corrective action. Although the Salem Creek project reaches are downstream of Salem Lake the channel instability problems in these areas do have an impact on the water quality in the Muddy Creek/Yadkin River system. The hydrologic regime of Salem Creek watershed has been historically altered by development in and around the City of Winston-Salem. The channels of Salem Creek and its tributaries have adjusted in response to the alterations in watershed hydrology by incising (i.e., downcutting), widening, and eroding laterally. These channel adjustments, in addition to historic channelization work, maintenance dredging and floodplain fill decreased flood storage/detention capacity and increased flood conveyance to downstream reaches contributing to flooding problems throughout the City. The stream bank erosion and sedimentation problems also represent a long-term maintenance issue as lateral erosion impact trails, parking lots, recreational facilities, sanitary sewer lines, culverts, and power lines within the park. In addition to the active recreational facilities in the parks (e.g., soccer and baseball fields, tennis courts, etc.), the stream is a focal point for various types of passive recreational activities (e.g., jogging, walking, biking, bird watching, and nature photography). However, in its current degraded condition it detracts from the aesthetic appeal of the natural setting the park provides the citizens of this community. ' It is the City of Winston-Salem's intention to correct the stream channel instability problems, improve water quality, enhance and/or restore natural floodplain characteristics, protect infrastructure, and reduce the loss of public land by implementing an effective, long-term ' restoration plan for the sections of Salem Creek within the park property. TECHNICAL REPORT I. Study Area The study area for the current project includes the reaches along Salem Creek in Civitan Park from Martin L. King Drive Bridge downstream approximately 2550 feet to the Vargrave Street Bridge (Fig. 1). II. Scope of Studies Existing data was collected and field studies were conducted to: evaluate the current conditions along Salem Creek; determine which reaches to restore and the extent of the restoration effort ' required; develop reliable estimates of the design discharge(s) and other design parameters that guided the preparation of restoration design plans, and satisfy permitting requirements. This study did not include wetland delineations, identification of significant plant or animal habitat, archeological or historical studies, or other environmental studies that may be required by local, state or federal permitting agencies. ' III. Watershed Characterization Existing information on watershed characteristics and land use was collected, compiled and reviewed. The data collected included: topographic maps, soils, land use maps, meteorological data, hydrologic and hydraulic data, and published technical reports. The following characterization of the Salem Creek watershed was developed from this information. A. Physiography and Basin Morphometry Salem Creek, a tributary of Muddy Creek and the Yadkin River, drains the City of Winston- Salem, Kernersville and Walkertown. Winston-Salem is located in Forsyth County in the west- central section of North Carolina. This region is situated along the eastern edge of the Western Piedmont physiographic province and is characterized by gently rolling to hilly topography. The Salem Creek watershed area is 42.8 square miles (27,392 acres) at the downstream upstream end of the Civitan Park project. The basin is nearly square-shaped, about 10.19 miles long by 9.7 miles wide. For purposes of this current study the Salem Creek watershed draining to the project reaches is divided into three subwatersheds. ' Upper Salem Creek subwatershed, which includes that area draining to Salem Lake, is 26.2 square miles. The Upper Salem Creek subwatershed is characterized by moderately steep topography with average slope of 8%. The overall slope of the upper mainstem Salem Creek is approximately 0.5%. Brushy Fork subwatershed, which includes Brushy Fork Creek, Brushy Fork Branch, and Frazier Creek, is the major subwatershed below Salem Lake with a drainage area of 12.4 square miles. The Brushy Fork subwatershed is characterized by relatively steep topography with nearly half the subwatershed in the 5-10% range. The overall slope of Brushy Fork is 0.5%. The Lower Salem Creek subwatershed (i.e., from the spillway at Salem Lake to the downstream end of Civitan Park) is 4.2 square miles at the downstream end of the project. The topography of 1 '' •:{ ?' `` ('.Ct , ?_ -'Z.'! C:3-??js$ ` } -Z' '? ?: i'• s+i.+' .iL f ' ?' :7 i ?.;? ?^-; 17 I L {lJ $ 1,??' sr. ?? t _ ,,„ tiiti? •..? fJ, ? !!? /??' t• ?• - ?.?,?, 4..; lei; .c ?.C\t??..,\" 421 f-4---33.? ??'/lie •.-:. - i ? I •i, a` ? ? \ '`-? , ? } f ?? `• t`"" \'`•.'?,?? ?? z 1 if(?? „?.:>: r .?-?-; ?- 1`;'. pfd ? 1 t ? ? -?' ( s•---. .;? ??• 1 ?€ #x ?I ?l "i '. s '•? r•l rt`\? ? r': ??•? ?'? • f 1 i ! q?+?t? ' A ? ?? •,??i? ??_• ' ?.. fil ell JUL- .1. I all At. I L f- '? 1, `?`c' ??l ??t? = ¢-9• l/ -,'? ' ? r ({ ,y. j? 7i r ?'"•°.R..? r/ / r ?,.? -? i:?:-.-- ?_ ?u:-: °'' ?i?{ .yam``? per,, Gca' L'1r : a )p H,I1. ?cW R? Wk?l . Park , f ?4I C -f 4.-. JJ S } -?.i:' ^?'?,f ; 11.:3 .? } i? fJJ?/?•f ..6. ?\; '\ ? f ? ?? T f'1 .+ 4r1?`-`?? - -.? r s tfj? ?1?? --t ??jt:.»r ,l "+- .. •` '?- "'+t 1 ?? /i 1? ?'{' i ?isr •?? 4'? k .,yr '; i•?.,`Z `}} ` +?? , r,?"`' s3i'?,/'"__ '?! ?t (? C?i ?? /? ;E a•_ ? ? i . 'ti-"*. ? st ? j. i. - '_:. •.?-??,t: -.i• l.i?j?\1 r""`?^''4,?' :1 ?# 'i ? .M ?._.! ?:. ai _ :f: ?'t L:.---,+ 4'i^-"'`...^' : (.' F . r??„J ?,?'','?+`'_? .ir(--? .L"? 1'z. ` ?- !? ?? li-tj-•?am ?i t f f.\? i 1. _. 311 +'.'.._ i t ? t ? ? , s ? y .r i?• 1 f' ? if, % ' f ?..•i'• ?'?' s • .. ? ti '?- T C?? , 4 r II IF t ?. ?( ?.__r.,51 i ????? ^ti rj,?_Y t ??.?«? j?,/f??r;j?t?''- t.`??siy'.?1';?? ???? ? )?'yt }` It: F 1?.? ?'?ttts tt t?. :? ?.'s?.' ?"a.-?? •-t? 14 tw'.' ?. / (/,?: / li;?•??-_L i 1 /?``t ?,y? s', ??:, 11t , .. t ? ?' ??`?r--?t° ..?:.'-'' ?. j'? i ? 5?, } .?-,,}? `l•: I ?l!';1 Il. `: ss ?s? i• ` .4o1°?-?i\,?•.. "'.?. y .,,r?"-?,+ t }5• ??._? lf: ? i3 __'4J ???,1_ `3 SJ? .1.? ?) 1 fr'Zr ?C.. ?? _ r 1f. '•???.?P3. 5' l+ .l? :?i'. '1?.1.i -r `? .- i'k:"3?? ?? t; ??'?\??1 '? S ??''a ?..,. m ' 3 ??r ' Fig. 1 Salem Creek at Civitan Park Study Area 0 3 t the Lower Salem Creek subwatershed is relatively steep with an average slope of approximately 10%. However, the overall slope of the mainstem Salem Creek in this area is only 0.1%. Most of the valley bottoms throughout the Salem Creek watershed are relatively narrow, confined by adjacent hillslopes. The few exceptions include areas along lower Kemers Mill Creek and along Salem Creek upstream and downstream of the Gorge, as well as in Civitan and Central Parks. Broad floodplains that currently support or historically supported wetland plant communities characterize these areas. B. Climate The climate of North Carolina is determined by its location in the warm temperate zone, but is modified by three important factors: the proximity of the Atlantic Ocean to the east, the distance of the state from the prevailing course of cyclonic storms, and the gradual rise in elevation of the land towards the west to the summit of Mt. Mitchell. Unlike the Coastal Plain, in the Western Piedmont extremes of temperature become greater, and rainfall is less. Forsyth County experiences moderate winters and warm summers. Mean annual temperature is 58° F. Mean monthly temperatures range from 32 to 50°F in January and 68 to 88 in July. There are no distinct wet and dry seasons. Most of the rainfall during the growing season comes from summer thunderstorms, but may vary widely from place to place and from season to season. Winter rainfall results mostly from low-pressure storms moving through the area and is less variable than summer rainfall. Mean annual precipitation is 44.2 inches, with mean monthly precipitation varying from a low of 2.8 inches in November to a high of 4.6 inches in July. Some snow falls every winter, with total amounts ranging from 1 inch to 2 feet. Mean annual snowfall is 9 inches. Generally, only a few inches accumulate at one time, and such accumulations usually melt within a few days. C. Geology, Soils, and Land Use The Salem Creek watershed is underlain by mica gneiss and mica schist rock formations of the ' Inner Piedmont, Milton Belt. The dominant upland soils weathered from these rocks in the Salem Creek watershed are Pacolet, Madison, and Cecil loamy soils. These soils are deep, well drained soils with a loamy surface layer and clayey subsoil. Moderate permeability and moderate to severe erosion hazard characterize these soils. The dominant floodplain soils along Salem Creek are of the Chewacla and Wehadkee series. These somewhat poorly to poorly drained soils formed in loamy alluvial deposits. They have a loamy surface layer and subsoil and are characterized by low permeability, a moderate to high erosion hazard, and a seasonal high water table within a depth of 0 to 1.5 feet. Although the Upper Salem Creek subwatershed includes some small percentage of high-density land uses, the dominant land use is low-density single- family residential and open or undeveloped land. The dominant land use in the Brushy Fork subwatershed is low-density single-family residential and undeveloped land with a higher percentage of high-density land uses concentrated in the Brushy Fork Creek subwatershed. The Lower Salem Creek subwatershed is a mix of high-density, low-density, and undeveloped land uses. t D. Hydrology 1. Field calibration of bankfull discharge for the Western Piedmont Region of North Carolina. Utilizing stream gaging data from the U.S. Geological Survey (USGS) and existing information gathered from on-going regional curve studies in North Carolina (NCSU and NRCS, 1999; and Wilkerson, et. al., 1998) field calibrations of the bankfull discharge were conducted at USGS gaging stations in the Salem Creek watershed. The gage sites included Salem Creek near Atwood (65.6 square miles) and Salem Creek at Winston Salem (51.3 square miles). This field exercise was critical for developing regional relationships between drainage area and discharge. It was utilized as one method for developing design discharge(s). The results of this field exercise are presented in the Design Discharge Estimates Section of this report. 2. Hydrologic and Hydraulic Studies of the Salem Creek Watershed. a. Hydrologic Analysis The purpose of the hydrologic study was to establish current hydrology in the Salem Creek watershed. These flows were utilized in the detailed hydraulic analysis using the U. S. Army Corps of Engineers HEC-RAS Water Surface Profile model. 1). Frequency Flow and Downstream Water Surface Elevation for the 100 Year Floodplain Analysis This report provides the 100-year discharge and starting water surface elevation to be used within the floodplain analysis for the proposed restoration of Salem Creek immediately upstream of Vargrave Street and within Civitan Park of Winston-Salem, North Carolina. Much of the material used to obtain the 100-year discharge and starting water surface elevation is obtained from. Draft Report - Upper Salem Creek Watershed Master Plan (HDR Engineering, 2000). Figures 3-2b and 3-2a were taken from the Draft Report to show the location of the proposed restoration reach within the hydrologic/hydraulic model. The report also provides the range of flows varying in frequency from the 1 year to the 10-year discharge based upon SCS TR-20 hydrologic model, regression equations and gage data. The lower frequency flows, based upon the Land Use of 2000, are presented as follows: Node SC 150 - Downstream Limit Frequency Interval (yrs) 10 25 50 100 Discharge (CFS) 6,941 7,821 9, 112 10,545 Node SC 160 -Upstream Limit Frequency Interval (yrs) 10 25 50 100 Discharge (CFS) 7,112 8,075 9,324 10,722 t The hydraulic analysis was completed using the 100-year discharge of 10,722 cfs for the entire reach. The starting water surface elevation for the proposed stream restoration is 766.2 ft. This elevation is shown on Figure A-29, from the Draft Report. Notice that the starting elevation is immediately upstream of Vargrave Street. If a Final Draft of HDR's Upper Salem Creek Watershed master Plan Draft Report is available, the 100-year discharges and starting water surface elevation will be revised as necessary. 2). Hydrologic Analysis for Higher Frequency Flows i Regression equations were used to develop flows based upon the 2-, 5- and 10- year flood frequency events. These estimates were developed using both the rural (Pope and Tasker, 1999) and the urban (Robbins and Pope, 1996) flood frequency flow equations. The equations used are i as follows: Rural Flood Frequency Equations where DA is the drainage area in square miles. 0 665 O "' 0670 . - 10-year = 334 DA 5-year = 248 DA 2-year = 144 DA (Prediction error - 43%) Small Urban Flood Frequency Equations where DA is the drainage area in square miles, IA is the impervious area in percent, and RQ is the peak discharge for the relative storm in cfs. 2-year = 7.87 DA-"' IA0.686 RQ20.290 (Model error - 33%, Prediction error - 40%) 5-year = 16.3 DA°.489 IA0'57Z RQ50.286 (Model error - 32%, Prediction - 39%) 10-year = 22.7 DAo.463 IA0.515 RQ 100.289 (Model error - 32%, Prediction error - 38%) It should be noted that the urban equations were developed for small urban streams with impervious areas typically greater than 10 percent. The study basins ranged in size from less than 1 square mile to 41 square miles. This location is approximately the largest sample used within the study. The flows shown below were calculated using the flood frequency flows for both the urban and rural equations. A range of percentage for the impervious area was developed based upon GIS land use within the Draft Report and the percent impervious measured at some of the 1 similar gage sites. The flows were calculated using 10, 15 and 20 percent for impervious area. However, it appears that the rural equations or the urban using ten percent impervious area is most suitable for this site. Flood Frequency Flows from the Rural Equation 2 year -1874 cfs, 5 year - 2986 cfs 10 year - 3947 cfs Note that with a prediction error of 43 percent, the flows may actually range from 1,200 to 2,700, 1,700 to 4,100 and 2,400 to 5,600 cfs for each respective frequency. A SCS TR-20 model was developed to replicate as precise as possible the 2 and 5-year frequency flows. After the model was completed, the 1-year frequency flow was determined using the 1-year rainfall depth. The following are the flows established by the SCS hydrologic model for the rural frequency flow equations. The SCS TR-20 input and summary for each model are included in the Appendix of this report. 1 year- 1111 cfs, 2-year - 1850 cfs, 5-year - 3008 cfs, and 10- year - 4828 cfs. Flood Frequency Flows from the Urban Equation 2 year - 2514 cfs, impervious area 2 year - 3320 cfs, impervious area 2 year - 4045 cfs, impervious area 5 year - 3687 cfs 5 year - 4650 cfs 5 year - 5481 cfs 10 year - 4540 cfs 10 year - 5594 cfs 10 year - 6488 cfs using the 10 percent using the 15 percent using the 20 percent Realize that the prediction of error is near 40 percent and that the actual flow may actually fall within the following ranges. The ranges were only developed for the 10 percent impervious area. The percent of impervious area was listed as 8 percent at Salem Creek gage in 1970. Note that with a prediction error of 43 percent, the flows may actually range from 1,500 to 3,600, 2,200 to 4,300 and 2,700 to 6,600 cis for each respective frequency. A SCS TR-20 model was developed to replicate as precise as possible the 2 and 5-year frequency flows. After the model was completed, the 1-year frequency flow was determined using the 1-year rainfall depth. The following are the flows established by the SCS hydrologic model for the urban frequency flow equations. The SCS TR-20 input and summary for each model are included in the Appendix to this report. 1 year - 1612 cfs, 2 year - 2510 cfs 5 year - 3858 cfs using the 10 percent impervious area 1 year - 2184 cfs, 2 year - 3293 cfs 5 year - 4917 cfs using the 15 percent impervious area I I t t River Drainage Area Frequency Runoff (s q. mi. 1.2 year 1.5 year 1.8 year cfsm inches' Fisher River 1954-71) 44.7 1220 1500 1610 Little Yadkin River (1961-98) 42.8 1935 2730 3535 1.1 14.89 South Fork Mudd Creek * 42.9 660 1010 1170 Elk Creek (1940-98) 48.1 1800 2850 3800 2.1 28.74 Table 1. Flood Frequency Flows for Streams within the Upper Yadkin River Watershed. *The years of the active gage are (1964-79 and 1988-91) The runoff data for the Fisher River and Elk Creek were obtained from the USGS Water Resources Data North Carolina Water Year 1999. The other watersheds were not listed, as the gages are inactive. b. Hydraulic Analysis The purpose of the hydraulic study was to analyze changes in floodwater surface elevations associated with the proposed channel modifications. 1). Existing Conditions The water surface profiles and elevations were computed using the U. S. Army Corps of Engineers HEC-RAS software, version 2.2. The 100-year discharge of 10,772 cfs and starting water surface elevation of 766.2 ft. were obtained from Draft Report - Upper Salem Creek Watershed Master Plan (HDR Engineering, 2000). The existing model and starting water surface elevation was started approximately 150 feet upstream of the Vargrave Street crossing. The last cross section is located approximately 100 feet downstream of the Martin Luther King Drive crossing. The cross sections are oriented facing downstream starting from left to right. ' The geometric data was obtained from two sources. The sources include (1) field surveyed topography of the channel and a portion of the floodplain and (2) floodplain mapping from the Draft Report described above. The cross sections used the field-surveyed topography to the I extent possible with the remaining length of floodplain elevations obtained from the Draft Report. The Manning's coefficients included within the report are consistent with Central Park at Salem ' s coefficient for the channel is .055, which is typical of a waterway Creek. The Manning showing inconsistent cross sections, debris and vegetation within the channel. The Manning's coefficient for the floodplain is 0.07, which consists of mostly open space with some large trees. ' The ineffective flow areas were modeled with Manning's coefficients of 10.0 to allow flow in the area at insignificant velocities. The 100-year water surface elevation is primarily controlled by the constrictions of the two crossings described above. The initial water surface elevation of 766.2 ft. is located within the reach impacted by the Vargrave Street crossing. Ineffective flow areas were determined and 8 C 7 modeled with Manning's coefficients of 10.0. The water surface elevation rises to 766.9 ft. three hundred feet upstream, where the ineffective flow is less significant. The water surface then increases at a slope of approximately .0002 ft/ft until the last section, which is immediately downstream of Martin Luther King Jr. Drive. This cross section is experiencing a hydraulic jump due to the crossing. The energy slope increases at .007 ft./ft., while the water surface elevation decreases by 0.2 ft. This condition shall likely hold true for both the existing and proposed conditions. The map showing the 100-yr floodplain, channel/floodplain cross-sections, summary tables, and warning messages are included in the Appendix of this report. E. Study Area Site Conditions As shown in Figure 2, the Civitan Park site is completely within the 100-year floodplain of Salem Creek. The dominant soils along Salem Creek floodplain in this area are of the Chewacla and Wehadkee series. The Chewacla series consists of nearly level, somewhat poorly drained soils formed in loamy alluvial deposits. They have a loamy surface layer, an upper subsoil layer of loam and clay loam and lower subsoil layers of silt clay loam and loamy sand. They are characterized by moderate permeability and medium available water capacity. They are subject to frequent flooding for brief periods, but have a seasonal high water table within a depth of 1.5 feet for 2 to 6 months annually. Infiltration is moderate, runoff is slow, and hazard of erosion is slight. Included with the Chewacla soil series in mapping are areas of Wehadkee soils. Areas of Wehadkee inclusions are subject to very frequent flooding and have a seasonal high water table at the surface for 2 to 6 months. The land to the south of Salem Creek includes Civitan Park. Developed to provide active (i.e., baseball and soccer fields) as well as passive (i.e., walking/jogging/bike trails) recreation, this area is part of a larger greenway system that includes the Salem Creek floodplain from Salem Lake to Peters Creek Parkway. A portion of the floodplain on this side of the creek was historically filled to accommodate a rubble and construction debris landfill. Winston Salem State University occupies the land area to the north of Salem Creek. The floodplain on the University site was originally filled to allow construction of Columbia Heights Jr. High School. The dominant land cover along the left floodplain (south) is mowed grass with scattered trees along the stream banks. The dominant land cover along the right floodplain (north) is parking lot, access roads, mowed grass, and an area of old field along Parkview Street. There are four wooded areas within the project reach. The first, a one-acre riparian forest, is situated along both banks of Salem Creek from the middle of Reach 1 to the confluence with Stadium Branch. The second, a forested wetland is situated along the left floodplain immediately adjacent to Stadium Branch. The third and fourth, a one-half acre and 7-acre stand respectively, are situated along the left floodplain from the landfill area to Vargrave Street. IV. Channel Morphology and Stability Assessment A. Field calibration of bankfull channel field indicators for the Western Piedmont Region of North Carolina. Utilizing stream gaging data from the U.S. Geological Survey (USGS) and existing information gathered from on-going regional curve studies in North Carolina (NCSU and NRCS, 1998; Wilkerson, et. al., 1998) field calibrations of the bankfull channel field indicators were conducted at USGS gaging stations in the Salem Creek watershed. The gage sites included Salem Creek near Atwood (65.6 square miles) and Salem Creek at Winston Salem (513 square miles). This field 9 exercise was critical for: gaining experience in identifying regional field indicators associated with the bankfull channel; and for developing regional relationships between drainage area and bankfull channel dimensions. The information gathered in this field exercise was used in conducting the geomorphic stream assessment of Salem Creek. B. Level II - Morphological Description of Salem Creek. The reaches along Salem Creek within the study area were classified into specific categories of stream types (i.e., C5, G5, etc.) utilizing the standard field procedures recommended by Rosgen (1996). The cross-section, pebble count data plots, and Level II: Reference Field Forms completed for each reach classified are included in the Appendix to this report. t C. Level III - Assessment of Stream Condition and Departure from Potential The reaches along Salem Creek within the study area were assessed for stream channel condition ' and influencing factors including riparian vegetation, meander pattern, depositional pattern, debris and channel blockages, sediment supply, vertical stability, and stream bank erosion potential. Photographs showing the existing conditions as well as the Level III Inventory Forms: ' Summary of Condition Categories completed for each reach evaluated are included in the Appendix to this report. ' The geomorphic features of Salem Creek were mapped and the overall stability assessed from Martin Luther King, Jr. Drive to Vargrave Street at the downstream end of the project site. To facilitate the data collection effort and subsequent data analysis the project was divided into three (3) reaches. The reach limits corresponded to obvious changes in characteristics. The ' Geomorphic Map is included in the Appendix to this report. Utilizing the data collected from the Level II stream classification and Level III channel condition ' assessment the current condition of Salem Creek and the degree to which the existing condition of the reaches differs from an accepted range of morphological values documented for similar stable stream types was evaluated. The direction, rate and nature of the channel adjustments were also evaluated. The results of these evaluations were utilized to determine which reaches needed intervention and the level of intervention required. ' D. Findings of Channel Morphology and Stability Assessment An analysis of the data collected during this field effort indicates widely varying conditions exist between the reaches. The following is a summary of the findings of that analysis as it relates to the existing conditions within the project study area: It appears that Reach 2 (middle) and Reach 3 (lower) of this section of Salem Creek were ' The aerial photographic record does not indicate routine channel maintenance occurred. However, field evidence indicates that all three reaches have been the focus of significant ' maintenance activity. The bed and banks have been armored with riprap throughout the study area. These protective measures appear to have been relatively successful in some areas, while less successful in other areas. In addition, it is evident that portions of the left floodplain were filled to accommodate recreational facilities (e.g., ball fields) as well as a landfill for rubble and construction debris. The right floodplain was probably filled to allow construction of Columbia Heights Jr. High School. The 1958 aerials show the school under construction. Historic topographic maps (USGS, 1950) indicate an extensive wetland system existed along the left floodplain prior to the construction of the ball fields and landfill. These channel and floodplain modifications probably resulted in a confined channel with a high ' width/depth ratio, low sinuosity and a relatively steep gradient. A typical channel evolution sequence following these types of disturbances includes: Initial bed degradation - particularly in channels with fine grained bed material, the bed provides little resistance to the increased shear stress that would develop if storm flows are confined to a steep, entrenched channel. This situation usually causes the channel to incise with a subsequent lowering of the bed elevation. Lateral adjustment - lowering of the streambed increases bank height thereby confining the channel even further and places additional stress on the banks. Hydraulic forces eroding the toe of the banks result in steeper bank angles with increased susceptibility to gravitational failures. As these failures become common the channel adjusts laterally. Aggradation - the bank retreat and subsequent widening decreases sediment transport capacity ' leading to deposition and the formation of side-channel bar features. Eventually an inner-berm feature develops along the channel margins. ' Stabilization - as bank angles are reduced to a gentle angle of repose and the depositional features are colonized by grasses and other perennial vegetation the channel begins to stabilize. Finally woody vegetation is able to colonize and stabilize the banks and adjacent slopes. Knowing what stage an unstable reach is in the evolutionary process allows us to predict the direction it will go in the future as well as determine the appropriate strategy for restoring ' stability. The reaches along Salem Creek are at various stages in the channel evolution process. Reach 1 (Martin Luther King. Jr. Drive to a point 812 feet downstream This reach is an unstable C4/E4 stream type. Although the mean particle size (D50) of the bed material is characteristic of a sand bed channel, the high percentage of gravel in the bed material samples indicates that this is a gravel bed stream with a very high degree of embeddedness. The ' width/depth ratio, floodprone width, and well-developed meanders are consistent with a C/E stream type. The channel planform is characterized by irregular meanders with tight (low) radii of curvature on some of the bends. ' Active bank erosion and lateral migration is evident. Field evidence indicates that the current meander migration is in a down-valley direction. As the meander bends tighten the rate of migration will increase with the potential for meanders to be cutoff. Numerous debris jams were observed throughout this reach. Each debris jam has a mid-channel bar on the upstream side and scour holes immediately downstream. Although the bed in this 11 segment is relatively stable, there is the potential for bed degradation to occur where scour on the outside of tight bends deepen the pool and form a steeper riffle upstream. Grade control is provided upstream of this reach by the boulders placed in the channel through the bridge opening as well as the encasement protecting the water main that crosses Salem Creek immediately downstream of its confluence with Brushy Fork. There is no grade control at the downstream end of this reach. Reach 1 is not completely entrenched. However, it is incised. Although it is not clear whether this reach had been channelized in the past, there is field evidence that it previously down-cut. For example, the extremely steep gradient (2%) of the reach through the bridge and immediately upstream of the bridge is not characteristic of channel slopes along this section of Salem Creek. The historic bed degradation and floodplain fill previously noted contributed to the current incised situation by increasing bank heights along this entire section of channel. Results of the stability assessment show bankfull to bank height ratios along this reach ranged from 1.64-2.36. These high, vertical banks are particularly susceptible to erosion and gravitational failure. In addition, there is currently no lateral control to prevent continued bank erosion and channel migration. Although the bank and riparian vegetation includes some mature trees and shrubs, rooting depth is only a fraction of the overall bank heights. It appears that many of the debris jams along this reach developed when bank trees were undercut and fell into the channel. The potential for continued bank erosion, loss of trees and channel migration is very high. Results of the stability assessment confirm that a significant length (i.e., 570 linear feet) of the banks along the outside meanders have a high to extreme bank erosion potential. In fact, as the bends and bars continue to develop lateral erosion and meander migration will accelerate. Because the channel is cutting into relatively high terraces and fill slopes this area will be a significant source of sediment for downstream reaches for a long time. Reach 2 (From a point 812 feet downstream of Martin Luther King, Jr. Drive to the confluence with the gully adjacent to the Winston Salem State Universi!y parking lot) This section of Salem Creek is an altered E4/G4 stream type. Although the mean particle size (D50) of the bed material is characteristic of a sand bed channel, the high percentage of gravel in the bed material samples indicates that this is a gravel bed stream with a very high degree of embeddedness. The width/depth ratio and floodprone width is consistent with an E stream type. However, the general cross-sectional shape and the very low sinuosity are indicative of a channelized/straightened section. The channel planform is characterized by truncated meanders with large radii of curvature. As indicated above, the alterations to Reach 2 occurred between 1958 and 1966. It appears that this reach has undergone a series of adjustments over time. Although not completely entrenched, it is incised. Field evidence suggests that this reach completed an early channel evolution process at some time in the past having initially degraded, adjusted laterally, aggraded and stabilized. The general cross-sectional shape is indicative of a channelized section that had evolved relatively gentle side slopes and an inner-berm feature. The presence of mature trees along the toe of banks in some sections supports this observation. Renewed bed degradation at some later time lowered the bed further, eroding and removing the inner-berms. The reach appears to have been transitioning to a G4c stream type when the incision was halted. The presence of a boulder/cobble riffles at several points along the reach suggests that the more recent incision was halted by channel maintenance activities. 12 i The observed lateral erosion, wider cross-sections, and aggradation in the upper and lower sections of Reach 2 indicate that these areas are in the early stages of channel widening and meander redevelopment. The historic bed degradation and floodplain fill previously noted contributed to the current incised situation by increasing bank heights along this entire section of channel. Results of the stability assessment show bankfull to bank height ratios along this reach ranged from 1.49-3.67. These high, vertical banks are susceptible to erosion and gravitational failure. The lower section is particularly susceptible in that there is very little lateral control. Due to the presence of overhead power lines, the bank and riparian vegetation in this section is maintained as grasses. Although the bank and riparian vegetation in the upper section includes some mature trees and shrubs, rooting depth is only a fraction of the overall bank heights. Debris jams formed from undercut and fallen bank trees were observed in this section of the reach. Currently, the middle section has lateral control provided by riprap and mature trees. The potential for continued bank erosion, loss of trees and channel migration is very high. Results of the stability assessment confirm that a significant length (i.e., 860 linear feet) of the banks along these reach have a high to extreme bank erosion potential. Reach 3 (From the confluence with the gully adjacent to the Winston Salem State University parking lot to the Vargrave Street Bridge) This reach is an altered E4/C4 stream type. Although the mean particle size (D50) of the bed material is characteristic of a sand bed channel, the high percentage of gravel in the bed material samples indicates that this is a gravel bed stream with a very high degree of embeddedness. The width/depth ratio and floodprone width is consistent with an E/C stream type. However, the general cross-sectional shape and low sinuosity is indicative of a channelized/straightened section. The channel planform is characterized by meanders with large radii of curvature. Currently, the upper section of this reach has good lateral control provided by riprap and mature trees along the banks. The profile and cross-sections indicate the bed in the upper section is aggrading. The lateral erosion and wider cross-section observed in the middle section of the reach are associated with the effects of the sanitary sewer line that crosses Salem Creek in this area. According to as-built drawings obtained from the City, at initial installation the bottom of the 18- inch sewer line was set at the invert of the streambed with its supporting pilings buried beneath the bed. Subsequent bed degradation has exposed the pilings. Currently, the sewer and pilings take-up more than two-thirds of the bankfull channel cross-section. As such, they function as a check dam, raising the stage of storm flows and causing significant scour of the bed in the immediate area of the crossing, as well as along both banks for quite a distance downstream. In addition, the sewer collects large amounts of debris and creates a significant backwater area upstream that, no doubt, has an effect on sediment transport. It is very likely contributing to the aggradation observed in the upper section of Reach 3, as well as that in the lower section of Reach 2. The lower section of this reach is currently adjusting laterally and appears to be in the early stages of channel widening and aggradation. Field observations indicate that riprap was placed beneath the Vargrave Street Bridge to provide scour protection. Although, this measure appears to have been effective, it raised the bed elevation and significantly altered the overall channel gradient. Even with a very low sinuosity the existing gradient is relatively flat. The very flat gradient has significantly affected sediment transport capacity of this channel section. This condition in 13 conjunction with a high sediment load supplied by unstable reaches upstream is contributing to the aggradation observed throughout most of this reach. The hillslopes along the right bank of the lower section (adjacent to Parkview Street) are unstable. Although there is evidence of hydraulic erosion along the toe of the banks, the majority of the instability appears related to steepness of the slopes and storm flows from the street directed over the slopes. Stadium Branch The channel cross-section and relative lack of sinuosity that characterize this perennial tributary indicate it was straightened and channelized at some time in the past. Analysis of the aerial photographic record indicates that these alterations occurred prior to 1951. The aerials also indicate that it was relocated when Reach 2 was straightened between 1958 and 1966. The historic filling of the floodplain for the ball fields left the upper sections of Stadium Branch entrenched. Although this is a very unnatural condition, for the most part the tributary is relatively stable. The exception is the lower 120 feet immediately upstream of Salem Creek. This section is a deeply incised G stream type. It is likely that this section down-cut during and/or immediately following the periods that Reach 2 of the mainstem was actively incising. The culvert under the trail and the abandoned 24-inch sanitary sewer line immediately upstream probably halted the head-ward progress of the bed degradation. Unnamed Tributary The perennial tributary that flows along the area immediately adjacent to Vargrave Street was straightened and channelized at some time in the past. The upper sections of this tributary are ' relatively stable. The exception is the lower 200 feet immediately upstream of Salem Creek. This section is a deeply incised G stream type. It is likely that this section down-cut during and/or immediately following the periods that Reach 3 of the mainstem was actively incising. The culvert under the trail probably halted the head-ward progress of the bed degradation. Gully f There is an ephemeral channel immediately adjacent to the Winston-Salem State University parking lot that conveys storm water from a storm drain outfall. The channel is a deeply incised G stream type. It is likely that this gully formed during and/or immediately following the periods that Reach 2 of the mainstem was actively incising. The head-ward degradation has progressed right up to the storm drain outfall. The process of down-cutting has exposed the 42 inch sewer line that runs beneath the parking across the gully and beneath the adjacent floodplain. V. Reference Reach A. Identifying and surveying a reference reach for Salem Creek After determining the targeted stream type (i.e., stable form for the reach to be restored) a Level I Geomorphic Characterization was conducted of the Salem Creek watershed and other watersheds in the Winston-Salem area. This evaluation focused on areas where there was a high probability of identifying reaches of the same stream type as the targeted stream type. A field reconnaissance 14 I was conducted to eliminate reaches that were obviously not the right stream type or were unstable. The stream types were confirmed by conducting a Level II Morphologic Description survey of candidate reaches. The candidate reaches were assessed to confirm that they are reasonably stable by conducting a Level III Assessment of Condition and Departure from Potential Analysis. Dozens of prospective reference reaches were evaluated in the Winston-Salem area, including; Salem Creek from the project reach - downstream to Peters Creek Parkway, Salem Creek from Route 40 - downstream to Clemmonsville Road, Bottom Branch Creek, Silas Creek from Reynolda Road - downstream to Country Club Road, Silas Creek from Country Club Road - downstream to Route 40, and Mill Creek from a point 3000 feet upstream of Shattalon Drive - downstream to its confluence with Muddy Creek. Most of the stream segments evaluated were determined to be unstable and/or to be inappropriate stream types (i.e., C3 and 134c). It was determined that a reach of Mill Creek upstream of Shattalon Drive was the most suitable reference for the channel along Salem Creek in Central Park. In addition morphological data collected on streams in other regions was utilized to guide the restoration design. To facilitate the use of Mill Creek as a reference, a detailed survey of this segment was conducted to develop design parameters. The morphological data summary is included in the Appendix to this report. VI. Design Discharge Estimates Five methods were used to develop design discharge estimates. These included 1) regional curves developed from on-going regional curve studies in North Carolina (NCSU and NRCS, 1999; and Wilkerson, et. al., 1998), 2) SCS TR-20 hydrologic model, 3) regression equations developed by the U.S. Geological Survey, 4) field calibrations and analysis of gage data from USGS gages on Salem Creek, and 5) Manning's equation and field data. Regional Curves As indicated previously, North Carolina State University (NCSU) and the U.S. Natural Resources Conservation Service have been cooperating to develop regional curves for the rural Piedmont area of North Carolina (NCSU and NRCS, 1998). In addition, the University of North Carolina at Charlotte recently developed regional curves for the urban Piedmont of North Carolina (Wilkerson, et. al., 1998). To confirm which of these curves (i.e., rural vs. urban) was most appropriate for use at the project site they were validated against data collected during field calibrations conducted at USGS gaging stations on Salem Creek. It was anticipated that due the highly urbanized character of the Winston-Salem area, the urban curve would be most appropriate. Although the validation analysis indicates that the bankfull flow is somewhat higher than predicated by the rural curve, it was significantly lower than that predicted by the urban curve. Consequently, the rural curve appears to be a better predictor of the bankfull discharge for the project site. This may be a function of the suburban/rural character of the Salem Creek watershed upstream of the project or the influence Salem Lake has on the hydrologic regime of the watershed. However, Rosgen (personal communication) has argued that the flow volume of the bankfull discharge does not change with urbanization, it merely occurs more frequently. 15 SCS TR-20 H drolo is Model As part of this current study a range of flows varying in frequency from the 1-year to the 10-year discharge was developed using the SCS TR-20 hydrologic model, information obtained from Draft Report - Upper Salem Creek Watershed Master Plan (HDR Engineering, 2000), regression equations and gage data. A SCS TR-20 model was developed to replicate as precisely as possible the 2 and 5-year frequency flows from the HDR report. After the model was completed, the 1- year frequency flow was determined using the 1-year rainfall depth. USGS Regression Equations USGS regression equations were used to develop flows based upon the 2-, 5- and 10- year flood frequency events. These estimates were developed using both the rural (Pope and Tasker, 1999) and the urban (Robbins and Pope, 1996) flood frequency flow equations. ' Field Calibrations of Bankfull Discharge at USGS Gaging Stations on Salem Creek Field calibrations of the bankfull discharge were conducted at USGS gaging stations in the ' Winston-Salem area. The gage sites included Salem Creek near Atwood (65.6 square miles) and Salem Creek at Winston Salem (51.3 square miles). The results of the field calibrations and analysis of the gage data was utilized to develop estimates of the bankfull discharge at the gage sites. A translation equation was developed that allowed for differences in the size of the drainage areas between the gage sites and the project site. Using the translation equation estimates of the bankfull discharge at the project site were computed. Manning's Equation Bankfull discharge estimates were developed using Manning's equation and cross-sectional data collected in the crossover (riffle/run) of a relatively stable reach as close to the project area as possible. The slope used was that of the riffle, and estimates of Manning's n were developed utilizing u/u* and the D84 of the riffle. t Bankfull Design Discharge Estimates As indicated in Table 2, the estimates developed using the Rural Regional Curve, USGS Rural ' s Equation methods all Regression Equation, Gage Calibration/Translation, and Manning compare favorably (i.e., t 13% of the Mean - 2053 cfs). In addition, these estimates fall within the range of discharges bound by the 1 and 2-Year Recurrence Interval Flood Flows developed with the SCS TR20 model. On the other hand, the estimates developed using the Urban Regional Curve and USGS Urban Regression Equation do not compare favorably with the results of the other methods (i.e., + 42% and 23% of the Mean, respectively). Based on this analysis it was determined that utilizing the regional curves developed for the Rural Piedmont area of North Carolina (NCSU and NRCS, 1998) provides a very reliable method for estimating bankfull discharge for the proposed project design. Consequently, the bankfull design discharge for the Civitan Park project will be 1885 cfs. The design will also incorporate the discharge estimates for lower frequency flood flows (i.e., 10, 50, 100-Year) developed utilizing the SCS TR20 model. 16 I Reach Urban Rural SCS TR20 USGS 2 YR USGS Gage Manning's Location Regional Regional Model Regression Cal ibration/Translation Equation (DA mi) Curve Curve 1 YR/ 2YR Urban/Rural Civitan 2911 1885* 1350 2150 2514 1874* 1952* 1786 Park (42.8) Central 2957 1932 1450 2350 2693 1999 2007 1951 Park (44) Upstream 3018 1994 NA NA 2080 1967 of Peters Creek (45.6) Silas 3225 2215 NA NA 2350 2390 Creek Parkway Gage (51.3) Atwood 3705 2756 NA NA 2980 3148 Gage (65.6) Table 2. Bankfull discharge estimates (cfs) developed using five methods. VII. Sediment Sample and Shear Stress Analysis In restoration design, this analysis is utilized to verify that the existing and proposed channel generate the shear stress needed to entrain and transport the sediment expected to be moving through the project reach under bankfull flow conditions. Sediment data gathered from the project reach is utilized to adjust the design channel dimensions to fit the drainage area, bankfull discharge, sediment supply, and conditions at the project site. To verify that the project channel dimensions, meander geometry and profile are appropriate to maintain the competency of the restored reach, sediment samples were collected from point bars and riffle subpavement areas along Salem Creek and the data collected was utilized to conduct a sediment entrainment analysis. The sediment entrainment analysis involved the following procedures: A. Sediment Sample Collection Procedures 1. Collect the two largest particles resting on the lower third (tail-out) of the point bar at an elevation half way between the point of maximum depth (thalweg) and bankfull. Measure (in feet) the intermediate axis of each particle and individually weigh the particles. 2. Collect a sediment sample from the point bar in the same location by pushing a five- gallon bottomless bucket into the bar. Remove the bar material within the bucket to a depth 2x the intermediate axis of the largest particle. 17 1 1 2 Estimating Pollutant Removal Efficiency of the Stormwater Wetlands Although the use of urban best management practices to improve water quality is still relatively new, a number of studies have evaluated their effectiveness (MWCOG, 1983; Schueler, 1987; Schueler, Kumble and Heraty, 1992). In general, conventional stormwater wetlands have a high pollutant removal capability that is comparable to conventional wet ponds. Schueler, et al. (1992) indicated that sediment removal is greater in well-designed stormwater wetlands, but phosphorus removal is more variable. The long-term average pollutant removal rates for several wet ponds were 20% -60% for nitrogen, 20% - 80% for phosphorus, 51% for zinc, 65% for lead, and 54% for sediment (Schueler, 1987). 3. Computations for Wetlands and Water Quality Ponds in Civitan Park Subwatersheds Pollutant Unmanaged Export ounds/ ear Removal Rate _(percent)_. Managed Export ounds/ ear Phosphorus 1442 20-80 1154 - 288 Nitrogen 18,165 20-60 14,532 - 746 Zinc 530 51 260 Lead 520 65 182 Sediment 427,392 54 196,600 I Table 4a. Pollutant Removal Computations for Subwatershed Area 1 t Pollutant Unmanaged Export oundsl earn Removal Rate (percent) Managed Export (pounds/year) Phosphorus 45 20-80 36-9 Nitrogen 562 20-60 450 - 225 Zinc 16.4 51 8 Lead 16 65 5.6 Sediment 13,216 54 6075 Table 4b. Pollutant Removal Computations for Subwatershed Area 2 Pollutant Unmanaged Export ( ounds/ ear) Removal Rate (percent) Managed Export (pounds/ year) Phosphorus 21 20-80 16.8-4.2 Nitrogen 268 20-60 214 - 107 Zinc 7.8 51 3.8 Lead 7.7 65 2.7 Sediment 6304 54 2900 Table 4c. Pollutant Removal Computations for Subwatershed Area 3 26 IX. Permitting Issues A. General In natural channel restoration projects, the level of intervention required to restore stability to a given stream reach is dictated by how far the existing conditions have departed from a stable channel form. Levels of intervention vary along a continuum from natural recovery to major channel reconstruction. It may be that once the cause of the instability (e.g., livestock grazing) as been eliminated through implementation of best management practices (e.g., fencing) natural processes will return the channel to a stable form. In some cases restoring lateral control via stream bank stabilization techniques is sufficient to correct an instability problem. However, a stream reach may have become so unstable that the most appropriate action is total reconstruction of its plan form and cross-sectional geometry, and longitudinal profile. Because they have departed significantly from a stable channel form, Salem Creek and its tributaries in Civitan Park require a high level of intervention. Consequently, reconstruction (i.e., excavating, grading, and filling) is required to reestablish stream channels with appropriate geomorphic features. The construction of the new channels will result in temporary and permanent impacts to some resources in the project area. B. Existing Wetland Resources This study did not include standard wetland delineation (i.e., field confirmation of three wetland parameters - hydric soils, hydrology, hydrophytic vegetation). However, an evaluation was conducted to determine the classification status (Cowardin, et. al., 1979) of specific areas based on mapped soils, field observations of their position in the landscape, source and frequency of hydrology, and a dominance of hydrophytic vegetation. Based on this evaluation non-tidal wetland areas along the vicinity of the project site include: 1) seasonally flooded gravel bars within the Salem Creek channel that are dominated by with immature black willow, red maple, green ash, sweetgum, mulberry, and river birch; and 2) a small, temporarily flooded, grove of trees in the left floodplain to the west of Stadium Branch noted in the Study Area Site Conditions Section. The grove of trees is dominated by mature red maples, silver maple, green ash, and box elders. Since the City maintains this area, there is no understory vegetation and ground cover is mowed grasses. There are several small drainage swales along the left floodplain that convey groundwater from beneath the landfill, indicating that this area historically included non-tidal wetlands. Although gravel bars typically do not exhibit hydric soil characteristics (e.g., gleying, mottling, organic staining, etc.), hydrology is provided for these soils by seasonal high flows. The gravel bars were segregated by position into upper and lower bar features. Given their hydrologic regime and the dominance of hydrophytic vegetation, the upper part of the gravel bars were classified as non-tidal wetlands (palustrine - scrub-shrub). There are two such areas within Reach 1 of the project. The combined area of these areas is approximately 0.08 acres. Although, the lower part of these gravel bars do not support vegetation, due to their position in the channel they were classified as non-tidal wetlands (riverine - unconsolidated shore). The combined area of these areas is approximately 0.03 acres. The total area of the gravel bars (vegetated and unvegetated) is approximately 0.11 acres. 27 1 fl I t Given the hydrologic regime and the dominance of hydrophytic vegetation, the grove of trees was classified as non-tidal wetlands (palustrine - forested). The area of this wetland is approximately 0.3 acres. C. Impacts to Wetlands The restoration work does not require impacts to the forested wetland area. However, the proposed design will require impacting approximately 0.11 acres of gravel bars. As indicated in the findings the project area is currently unstable. The reaches in this section of Salem Creek have high width/depth ratios, steep unstable banks, poor sediment transport capacity, and are experiencing aggradation. Lacking lateral control, bank erosion potential is very high. Field observations indicate that lateral adjustment has been the current trend. Given the lack of lateral control, it is likely that erosion rates will accelerate as meanders continue to redevelop. The geomorphic restoration objectives outlined previously are intended to reduce stress on the banks and establish a stable, self-maintaining channel. This will be accomplished by reestablishing a regular planform, establishing a better angle of repose on the banks, lowering the bankfull to bank height ratio by raising the streambed, excavating and grading the high, vertical banks on the outside of the meander bends, and establishing a broader floodprone area on the inside of the meander bends by excavating the floodplain/terrace in those areas. Sediment transport capacity will be improved by constructing a narrow and deep channel. This requires disturbance of the existing gravel bars in the upper and middle section of Reach 1. D. Wetland Impact Avoidance, Minimization and Compensation The impacts mentioned above cannot be avoided. However, the intent of the design was to minimize the impacts to wetland areas, to the extent practical. The proposed impacts are associated with mechanical clearing and grading and will be limited to those gravel bar areas where grading is essential to establish stable channel geometry. Because of the unstable conditions some of these gravel bars are transitory features. As erosion and lateral adjustment proceeds they will be removed and any benefits they currently provide will be lost. The impacts to the gravel bars are temporary. More stable vegetated gravel bars will be constructed along the inside of each meander bend as part of the proposed project. As noted, the restoration work does not require impacts to the forested wetland area. All disturbed areas impacted within the limits of the project will be seeded with native grasses and planted with native trees and shrubs. All disturbed areas impacted outside the limits of the project will be seeded with grasses and clover. The small, temporary impacts associated with this project are outweighed by the significant benefits. As indicated, the restoration approach includes reconstructing Reach 1 with a more regular planform, reconstructing Reach 2 with a meandering channel routed along the left floodplain, and maintaining Reach 3 with its existing meander geometry but a narrower cross- section. Three tributary streams will be restored. The rubble landfill in the left floodplain will be removed and a large wetland system constructed. In addition, two wetland/water quality ponds, will be constructed to provide management of the storm water runoff from the University. Upon completion of this project, 5240 feet of unstable stream channel will be restored, 5.2 acres of wetland will be restored/created (a net increase of 4.79 acres), and 17.5 acres of riparian forest and native meadow will be created resulting in reduced sediment and nutrient loadings to Salem Creek, and greatly enhanced riparian and in-stream habitat. The entire restoration area will be permanently protected in a conservation easement established by the City. 28 I E. Impacts to Forest Resources The restoration design will require clearing areas that are currently wooded. From a design and permitting perspective, it was considered important that the quality of these wooded areas be evaluated and a determination made relative to the proposed impacts. Consequently, the City Forester conducted an evaluation of the wooded areas along Salem Creek that will be disturbed by the project. The evaluation included a general delineation of the dominant woody species (i.e., trees and shrubs), as well as a characterization of the size range of the larger trees and the overall health/quality of the trees in these areas. The findings of the evaluation and recommendations relative to the proposed impacts is summarized here and the original report is included in the Appendix to this report. • Civitan Park - Tree Evaluation The following is a summary of the tree evaluation conducted for the Civitan Park project along Salem Creek. It provides an overview of species present and status of preservation based on their species and current condition. Due to the consistency of tree species present throughout this project and the vagueness of the "block" boundaries, the wooded areas were divided into two blocks. These two blocks are separated by the pedestrian bridge, with the "A" block being upstream of the bridge and the "B" block being downstream of the bridge. Block A Block A consists of local wetland species. Present are red maple, black willow, green ash, mulberry, sweetgum, river birch, and yellow poplar. The majority of tree species present fall into the 4 to 6 inch diameter range. Field delineation identified some river birch in the 8 to 10 inch range, a 10-inch sycamore, a 14-inch red maple, and some yellow poplars in the 20 inch diameter category. The majority of tree species present are found growing along the creek bank with exposed roots or poor anchorage. A number of trees have already toppled over into the creek. The trees growing away from the creek bank, especially the larger ones, have suffered structural damage, are poorly formed (weak structure), or are in poor health. Based on the findings of this evaluation, there will be no long-term benefits from trying to salvage the trees present. This determination is based on the species present, their condition, their form, and the site itself. The ground cover is comprised of kudzu, honeysuckle vines, pokeberry, cane, and blackberries. These are very common in this area and are aggressive growers. Therefore, trying to save the plants that are present is not recommended. Block B Although Block B is similar to Block A, it does contain larger trees. The tree species present are s 1 t 1 H i t s t t Riffle Salem Creek - Reach 2 0 -5 -10 0 -15 -20 -25 Width from River Left to Right (ft) Salem Creek - Reach 2 Salem Creek description: height of instrument ft): omit distance S FS FS= W fpa channel Manning's notes t. ft) (ft) I elevation bankfull to of bank ft sloe %) -9.91 • -9.98 -12.64 -9.98 - -12.72 -14.87 -16.81 -17.5 -18.49 -19.73 -21.85 -21.76 -21.98 -21.68 -21.43 -19.62 -19.29 -16.95 -14.99 -14.44 -12.64 -11.61 -10.31 -8.09 -5.4 -4.6- e from channel MGM 76 measured D84' mm 25.8 relative roughness 10.9 fric: factor 0.032 Mannin 's n from channel material t I t t t i Salem Creek - Reach 2 Salem Creek Winston Salem State Universi Note: Pebble Count, Salem Creek - Reach 2 100% 90% 11 80% 70% 60% ; 1.. f 1 r 50% 40% J T m C J1. 1 ! 1 J 1 Y. ., LL 30% ? - 4 1 C 20% 1 ; 1 1 1 1 ; ; .J. 1 1 f 0. 10% t , ; J _J , ! 11 1 J.J , . . .. J.. . 111J! T 0% - 11.146 0.01 0.1 1 10 100 1000 10000 Particle Size (mm) -.-Cumulative Percent ? Percent Item -•r-Riffle -+-Pool -+-Run -+-Glide Size percent less than (mm) Percent by substrate type D16 D35 D50 D84 D95 silt/clay sand gravel cobble boulder bedrock 0.288 0.42 0.6 76 222 0% 68% 14% 15% 3% 0% t t t t very fine sand 0.062 0.13 fine sand 0.13 0.25 medium sand 0.25 0.5 12 coarse sand 0.5 1 20 very coarse sand 1 2 very fine gravel 2 4 fine gravel 4 6 3 fine gravel 6 8 6 medium gravel 8 11 6 medium gravel 11 16 3 coars e gravel 16 22 3 coarse gravel 22 32 6 very coarse gravel 32 45 ve coarse ravel 45 64 9 small cobble 64 90 T medium cobble 90 128 6 large cobble 128 180 12 ve la roe cobble 180 256 6 small boulder 256 362 3 small boulder 362 512 medium boulder 512 1024 large boulder 1024 2048 100% 90% 80% 70% 60% i 50% 40% a 30% 20% 10% 0% Riffle Pebble Count Salem Creek - Reach 2 n, 0.01 0.1 1 10 100 1000 10000 Particle Size (mm) --E- Cumulative Percent ? Percent ft=em t i Riffle Salem Creek - Reach 3 5 0 -5 w -10 -15 -20 Width from River left to Right (ft) section: Riffle Salem Creek - Reach 3 Salem Creek description: height of instrument ft): omit distance FS FS FS W fpa channel Manning's notes : at. _ (ft) (ft) elevation bankfull to "of bank ft skive 10161- -5.5 .. ? -5.99 -7.85 -5.99 -7.25 -7.85 imensions -8.29 273.3 x-section area -9.77 49.1 width -12.22 g.2 d max -13.68 11.0 bank ht -15.72 r4OO.O JW flood -16.48 -17.02 -16.02 6.2 velocity (ft/sec) -16.14 1688.2 discharge rate, 0 (cfs) -16.05 0.92 shear stress ((Ibs/ft sq) -16.45 0.69 shear velocity (ft/sec) ff.. -16.65 -16.25 0.21 Froude number -15.68 9.0 friction factor U/u* -14.37 61.3 threshold grain size (mm) -13.7 -11.43 a from channel material -9.92 1 measured D84 mm -8.82 2780.9 relative roughness 22.5 fric. factor -7.66 0.015 Mannin 's n from channel material -6.78 -6.11 -5.46 s J 7 i i Salem Creek - Reach 3 Salem Creek Winston Salem State Oniversit Note: Pebble Count, Salem Creek - Reach 3 100% 90% 80% - - 70% ' i 7 7 7 60% s 50% 40% ; IM 30% 20%- IT d- 10% , 0% ; 0.01 0.1 1 10 100 1000 10000 Particle Size (mm) -.-Cumulative Percent ? Percent Item -Riffle --Pool - Run -•-Glide Size percent less than (mm) Percent by substrate type D16 D35 D50 D84 D95 silt/clay sand gravel cobble boulder bedrock 0.181 0.27 0.3 1 6 0% 94% 3% 1% 2% 0% e t i r i Riffle Pebble Count Riffle Pebble Count, Material Size Range (mm) Count Salem Creek - Reach 3 silt/clay 0 0.062 # Salem Creek very fine sand 0.062 0.13 # Winston Salem State University fine sand 0.13 0.25 18 # Note: medium sand 0.25 0.5 47 coarse sand 0.5 1 20 If # Riffle Pebble Count, Salem Creek - Reach 3 very coarse sand 1 2 # 100% ---?-- r,?„ very fine gravel 2 4 # g0 % fine gravel 4 6 2 # , . . fine gravel 6 8 6 # ? ? medium gravel 8 11 6 # 70% medium gravel 11 16 1 # 60% coarse gravel 16 22 ` coarse gravel 22 32 # 50% LL very coarse gravel 32 45 If # m 40 very coarse ravel 45 64 # m 30% small cobble 64 90 # a " medium cobble 90 128 # 20% large cobble 128 180 10% very large cobble 180 256 # 0 % „ 1 r „ small boulder 256 362 small boulder 362 512 0.01 0.1 1 10 100 1000 10000 medium boulder 512 1024 Particle Size (mm) -Cumulative Percent ? Percent Rem large boulder. 1024 2048 ve la a boulder 2048 4096 Size percent less an (mm) th Percent b substra te e bedrock D16 D35 D 50 D84 D95 silt/clay sand ravel cobble boulder bedrock Total Particle Count: 100 0.231 0.32 0.4 1 9 0% 85% 15% 0% 0% 0% I"M I. Oil Stream Name: Reach ID: i T '.....?:..... 5a\, 6, en,,,k Date: ?ac??. ?; Observers c?+d?aoueator): t`Z.'Roc?? Qae Drainage .Area: 42.5 ,, ,,F' Stream Order. A4A% IRi d F orm: arian Ve on V.-\ K- 3 olan a: aoocwOn): VD 4 AIL- e.,-d- _.. - -*, Meander Pattern c ); Depositional Pattern peGUcoda& Debris/Channel hl??rvw.co? . ges peaty ao& & *smiptimi yw+nbs OA%a 4*.Ar ? Bank ErodibilitvTXa7ard Ratino/[nAa,r lRRTM Bank ID # 1 2 `3 5 BankLeng0a Bank Height to.5 1-t.S tt. o 10 .0 taS Bankfull Height M-t -t•4 " (..t 5,g Root Depth 2.S • 2.6 .5 3 Root Density % 10 No 1D 4-k0 i5 Bank ArWe d -lp Surface Protection % %o AO 10 9o 15 Bank Materials Stratification v)o Q0 Wtb 1Jo ytb a.uannei OTanruty Sediment Supply C,.) Moderate Low STreamaea v eracal Near-bank stress (Ranking/%) % = A nb/ A A nb = A= I Sketch of bank profile including bads mam[nk *ab6 baofd4d( ravel Overall Assessment of Hydraulic Condition: 312 e•3 4& J1 ?S!1? • e? CA t3D W- - 'J e?ND 6MV ?L? s? r//CtL `(? S C v 0t General Ramarlra rnr..._ _.:? -- - - - •--•-? -?-? sw.r.oa®oa? Mate4 a-Am AWAUOM ato.): _?X.?'2. " (?ce?• i?Fitt?uD,!?A.L" ? es:?. rS? m 10? 1 ?.'? ? c ?Q ?gam aa___ ??h'?r w?.?,?,.,?.?. ?v? ? la,?e.?uJ? s?us?or+-• . Stream Name: Reach ID: T U, LA Date: 4( (o (o t 2. _ ... Observers cam: kt2. v?ckv ?vv.. Drainage Area: 42.s Stream Size, Stream Order. 4 Meander Pattern ccuw A? a"ipd.): Flow R e: Bed Form: DS positional Pattern (letter code & &mtipfi.): Ri an V etation t -- ck.a.14 s°?" 1Ortx tk,-- v Debris/Channel Blockages 000=*a&& mi: cx ss SZr WAOM .? ? rwra- ?.? W.VY l V?M{lMga Bank Erodibility Hazard Ratina/rndp r mmm Bank ID # (, $ `t BankLength Bank Height tto 11.2 \,3 t5, w.9 Bankfull Height -14- 4-.S 5 4.2 1-1.3 1 Root Depth . o z.S ?- tit •5 Root Density % to Zo 25 l5 to Bank Angle de 5 t,o 45 a.5 Surface Protection % ? 46 fro 30 Bank Materials Stratification v3o No ao Nv l.riannei atatmity Sediment Supply (mt. High* Moderate Low streatnbed Vertical Stability Aggrad*WAggraded egradm Degraded Stable Near-bank stress (Ranicing/%) % = A nb/ A Overall Assessment of Hydraulic Condition: A nb = T-7= A= Sketch of bank prorde including: bet Munk sb*k baWM level 1.11 " IW IkZ r4Nl, Z?Z,37 OUXICtm '74 • sw-s• ?i • ' I General Remarks (Noce t Ad. fm! W-tmo and/or gooceai?io.l hamm Chmml 4mrarias, d ox t?ce.?3tls.?ct?rGn,.. r.. wntt?.t a ?wrs ? t ?lO?- ? - t. ?(L,?raww0 S??Qe 1. - L? Alr, w -A 1-.VA i! ?w s ik?3D ' SLIT' 1 Stream Name: Reach ID: Location: ' ' C C? C1 C?Z . _ _. %% Meander Pattern tidww& a c.,t,.??nt..?i, zcl um? tcts Depositional Pattern (letter Code do d IR, Stream Size, Stream Order. Flow R fg- Bed Form: .Riparian Ve e=on s obrs ? doaipHon} ur k - Sc a1.? .e,Ztt Date: 416 1(,% Observers cteo.da/oouectar): Drainage Area: a, t DebridChannel Blockages rtettucedn?s.l?..,:- i.5 'Jowvta Bank Erodihility Nerd RatinolfnAax Iwmm Bank ID # to tt BankLength Bank Height 17- L63 Bankfull Height (..N S-% Root Depth 1,0 .5 Root Densi % to to nk Angle de face Protection o r w Banlr Materials axification 'ks toys Near-bank stress (Ranking/l/6) % A nbt A Overall Assessment of Hydraulic Condition: A nb = A= Sketch of bank profile including: ball metm;a* strata, baoM M level i i St to itu r 'SkND' ss ll 'S1tX Ceneral Remarks (Note cvideme of m vrae* =wGr IsoteoYOw fait,, abannd ?. %.nannei btabuzty Sediment Supply (mot m,oeM«) High -v. Moderate Low Streambed Vertical Stability ed Dpgqcling(Degraded Stable -t"f mmv> pg'% Mvl"?I MRHI-R. .51-NOM"M Stmm Name: Date: Reach ID: rz Observers Location: Q4iV\E?? P04- Drainage Area: j&a., Strum SizA Stream Order 40-, 0 Meaader Pattem acu, CO& & A"Wipam): U __ ___gime, - - F FI:ow Re V-Lc?%44& VAXOAAA? ffedFornr OWO% B Fol Depositional Pattern (kaw w& & amptm): Ripwianyegetation gi-by.- -om AA;%? CrR55 ah= & dcomiption): avCajhW Debris/Channel BI (ICUWCO&&dftW*iO,6: %Wyo. Sh-eambank Erosion Potential Channel Stability Bank Erodibility Hazard Rating4ndex (BEH smimf" q Baak ID IU t-b t4- is BankLength 1 I BankHeight 1% 16.(0 18. - 16 ?i ?Iz BankfuU Height B !-.T 1, 5A 5,4'j - jLA Rolot Depth -to at 1. 0 * -Z Eiot Density C/o) - So 40 At, %S 4o to Bank Aq&!e (dppm) _ .?q -bS - -to 31& 40 SUr&Ce Protection (0/0) .*to WO 4 Ib -So 60 4o BankMatmials StIfification MO Nmr-b&nk StI= En?elo) % A nb/ A Overall Asses=ent of Hydraulic Co-nd-ition: LAnb Sketch of bank Proffle including: ba* =Own* sftaU6 baW" kvd 4 Genend Rawks vow avi&-A-=- af mm Via* M&Qr 800todaw faiNO4 Cmew ....... *OWMK wtrkd, joy%" 10 R,,? SA, It 110 11 lEgh Moderate Low V%k - OF ? ? ? ? ?? ?? M M M M M= M M M M BEHI SUMMARY TABLE Salem Creek at Civitan Paric Reach Hank Bank S IV, Bank Bank Surface Surface Materials & Reach ID Bank Area Ha ;t 1 = Root RDepth oot I Root R].?o Root DansHy Bank Length Length Height - fight BKF Hei Depth Bank indeDensity (74 Index Angle Angle Protection Protection Stratlflcaiton totaI Rating ht inde g x weight Index N Index Index - ' aeon Gregory Reach ! 1021 Bank 1 1021 110 10.5 1155 4.7 2.23 8.19 2.5 0.24 6.70 :1 8.4 85 6.84 10 9.0 10.0 49.2 Extreme Bank 2 1021 110 17.5 1925 7.4 2.36 8.38 2.5 0.14 8.00 8.4 60 3.90 40 5.1 10.0 43 8 Very High Bank 3 1021 100 11 1100 6.6 1.67 6.32 2 0.18 7.47 10 8.4 70 4.90 10 9.0 15.0 . 51.1 Extreme Bank 4 1021 100 10 1000, 6.1 1.64 6.19 0.5 0.05 9.00 10, 8.4 35 2.68 90 1.5 10.0 37.8 High Bank 5 1021 150 10.5 1575 5.3 1.98 7.81 3 0.29 6.06 15 7.9 90 7.90 15 8.0 15.0 52.7 Extreme Bank 6 872 100 16.8 1680 7.6 2.21 8.16 1 0.06 8.89 10 8.4 45 3.17 40 5.1 10.0 43.8 Very High Bank 7 872 100 11.2 1120 4.5 2.49 8.56 2.5 0.22 6.91 20 7.2 55 3.66 15 8.0 15.0 49.3 Extreme Bank 7a 872 35 11.3 395.5 5.3 2.13 8.05 4 0.35 5.36 25 6.5 60 3.90 45 4.7 10.0 38.6 High Bank 8 872 200 15.4 3080 4.2 3.67 10.00 12 0.78 2.54 15 7.9 45 3.17 60 3.5 10.0 37.1 High Bank 9 Bank 10 872 872 250 75 10.9 12 2725 900 7.3 6.1 1.49 1.97 5.86 7.74 0.5 1 0.05 0.08 10.00 8.63 10 10 8.4 8.4 45 85 3.17 6.84 30 10 5.9 9.0 10.0 15.0 43.4 55.7 Very High Extreme Bank 11 872 100 , 10.3 1030 , 5.1 2.02 7.99 0.5 0.05 10.00 10 8.4 40 2.93 15 8.0 15.0 52.4 Extreme Reach 3 859 Bank 12 859 100 11 1100 5.7 1.93 7.57 10 0.91 1.82 50 4.3 40 2.93 90 1.5 10.0 28.1 Moderate Bank 12a 859 120 10.6 1272 6.9 1.54 6.13 9 0.85 2.20 40 5.1 35 2.68 100 1.0 10.0 27.1 Moderate Bank 13 859 75 8.7 652.5 5.2 1.67 6.35 2.5 0.29 6.04 40 5.1 90 7.90 10 9.0 15.0 49.4 Extreme Bank 14 859 60 10 600 5.5 1.82 7.04 1 0.10 8.44 15 7.9 80 5.90 30 5.9 10.0 45.2 Extreme Bank 15 859 100 22 2200 6.3 3.49 10.00 13 0.59 3.46 40 5.1 40 2.93 60 3.5 15.0 40.0 Very High Bank 15a 859 150 22 3300 5.4 4.07 10.00 2 0.09 8.55 10 8.4 75 5.40 40 5.1 15.0 52.5 Extreme Clear Creeks Consulting Page 1 of 1 416/01 s L Point / Side BAR-BULK MATERIALS SAMPLE DATA: Size Distribution Analysis Party: ?, ?ow?t U Location: Date: Notes: S Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE S ieve SIZE .3toKAW? A k O M ?t ,-1 Sthrn ? v?vv? llo inn w? 25 rnrl `?? "Yvl 122?Mrn "CZ1?Q p Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight SURFACE • 1 • d8 l "S , ?? , Z*j 1 r25 MATERIALS E ? Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights DATA S _...._.__....._..----- ----.__. ------ -.._...____..___--- ----- ----- ---- ------- ? Two Largest Particles Total Net Total Net Total Net Total Net Total Net Total Net Total Net Total Net Total Net 1 .53 O.43 tlo3 R0. Dab \ ,°1 O. 3100, 1..; t5 4,1,\ 3. A, -b A- o ?b2 2 , No. Dia. WT, 3 1 17_2 3 ,7j? q 2 lojj D.b2 Bucket 5 + Materials g Weight Bucket Tare g 9 Weight 10 Materials Weight 11 (Materials less than: 12 mm.) 13 Be Sure to Add 14 Separate Material 15 Weights to Grand Total Net wt. Total ?, ?3 (? . b$ n o, a n 2 ,-cs n '3.3 n 3 . to (? . b2 n ?.9 I-1 15.0 (--1 /o Gr^^ Accur Josh:C M Doc uments/Class Files/RAM/Forms/RAM Forms.xls ii Wildland Hydrology 9100 10( 9( 8C 70 C 60 LL ?--50 W 40 Q 30 20 10 n IV {J .? <7l 'rr iv -'? N W .P cn a, N (J 1s Ulm N W t. Ui § -1 ?.? O D p0 O O O O° cogOO 8 0 0 co p O S PARTICLE SIZE - Millimeters ° 50 45 U F 40 35 30 Z C p 25 ?n a 20 ?KI 15 0 I x r? lp Z o? 'b Cr1 (?,, O y ? e o pd O O x N s Point / Side BAR-BULK MATERIALS SAMPLE DATA: Size Distribution Analysis Party: Location: Sa\sztcv? _ vkZM.? StcM1? Date: Notes: B S Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE Sieve SIZE A l . O ct 2 , 0f 411175 44? Qj r \ m \ ?o 'Wxm 2S 't n M m 52 M`M 8 `(hM P Tare Weight Tare Weight Tare Weight Tare Weight Tare Weight Tare W?jeight Tare Weight Tare Weight =Ight E S Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights Sample Weights -- Total Net Total I Net Total Net Total Net Total Net Total -r -Net- Total ?Net Total Net Total Net 2 3 4 8 6 7 8 9 10 11 - 12 13 14 18 Netwt. rocal 5.°? ?t?5 3,3? 1. Vi 0,30 Grand Tot. ?j0.0 A. I%'0 Ao 1$ ? ` ? to I- A \ 0? Accum. % =< 3? Ito -? .75.10 ---? 5-1J fa -j? Q.l' -> -Ito, ---? ?5 --? °tb.ly --3• top --?• 1t? NOTES SURFACE MATERIALS DATA ( Two Largest Particles No. Dia. WT. 1 S o,c? 1b; 2 -.73 v \b? Bucket + Materials Bucket Materials Weight (Materials less than: mm.) 8e 5ure to Add Separate Material Weights to Grand Total . GRAND TOTAL SAMPLE WEIGHT Josh:C/My Documents/Class Files/RAM/Forms/RAM Forms.xis Wlldland Hydrology 9/oo y x C7 ?? "cc'??r?y °?? "`? Q? P? c ?::. a ?1 ti "? W N J,? ?' t t t t I t t Upstream end of Reach 1, looking at Bank #2 SALEM CREEK AT CIVITAN PARK t t t t t Riffle Mill Creek 2 0 -2 -4 o -6 > $ a? w -10 -12 -14 -16 1 0 2 0 3 D 4 0 5 0 E 0 Width from River Left to Right (ft) section: Riffle Mill Creek Mill Creek description: height of instrument (ft) notes omit pt. distance (ft) FS (ft) elevation FS bankfull FS top of bank W fpa channel (ft) slope (%) Manning's "n., ?t -5.16 -6.57 -5.34 „. ? Vii: Zf -6.57 -8.8 G L` -9.41 -10.73 -?77- 7M- ;3-ui -11 -11.59 -12.09 dimensions 207.7 x -section area 5.1 d mean 41.1 width 46.9 wet P 6.9 d max 4.4 h yd radi 8.2 bank ht 8.1 w/d ratio 500.0 W flood prone area 12.2 ent ratio yr v. -12.62 kl!' -12.96 hydraulics 12 -13.02 7.8 velocity (ft/sec) -13.02 1627.8 discharge rate, Q (cfs) -13.49 0.83 shear stress ((Ibs/ft sq) -13.43 0.65 shear velocity (ft/sec) _12.17 7.416 unit stream power (lbs/ft/sec) f L ?1 -10.61 .38 Froude number 77 -9.54 2.0 friction factor u/u* -- r ?.e -7.5 0.3 threshold grain size (mm) 777777- 7_ -6.69 ??'l y4 -5.34 check from channel material -5 32 measured D84 mm 47.6 relative roughness 12.4 fric. factor 0.027 Mannin 's n from channel material t t e Pool Mill Creek 0 -2 -4 -6 c o -8 V w -10 -12 -14 -16 Width from River Left to Right (ft) section: Pool Mill Creek Mill Creek description: height of ins trument (ft): notes omit pt distance (ft) FS (ft) elevation FS FS bankfull top of bank channel slope (%) t? r z -5.18 t -5.7 -6.93 ? 1 k< -6.93 -7.77 1: -8.63 -9.36 -10.25 -10.25 'j r, 97- -10.69 dimensions ' 238.8 x-section area 5.4 d mean 44.3 _ width 52.2 wet P 8.2 d'max 4.6 h yd radi 9.5 bank ht F-I -12.75 -12.47 rX ? t.:? -13.15 ?C?t -13.6 sl', 'iY -14.07 r,', d r ±?, -14.59 -15.08 -15.15 15.14 y rau6cs 0.00 shear stress Ibs/fts 0.00 shearveloc' ft/sec 0-.0 threshold rain size mm 1qr Y? -14.85 r -9.45 r ;`.. t• -8.8 R ?'? -7.49 -6.46 -5.72 ?x4'i -5.32 e 4 2 0 -2 -4 0 1 -6 m -8 w Run Mill Creek Morphological Characteristics of Salem Creek at Civitan Park Reach 2 and Mill Creek Reference Reach Variables Existing Proposed USGS Station Reference Channel Reach Reach Stream types E4/G4 E4 E4 Drainage area 42.5 42.5 46 mil Bankfull width 37.7-43.4 50 38.4-41.1 Wbkf 40.3 39.5 Bankfull mean 5.7-6.6 5.6 5.1-5.6 depth dbkf 6.2 5.33 Width/depth 5.7-7.4 8.9 7.0-8.1 ratio Wbkf/dbkf 6.57 7.5 Bankfull cross- 275.8-298 280 202.8-238.8 sectional area (275) (223.5) Abkf Bankfull mean 6.85 6.7 7.96 velocity Vbkf Bankfull 1885 1885 1779 discharge (cfs) Qbkf Bankfull 8.0-9.7 7.9 6.9-8.8 maximum (8.8) (7.9) depth dmax Width of flood 300 300 500+ prone area W Entrenchment 8 6 12.2 ratio W a/Wbkf Meander 160-540 480-500 200-220 length Lm 305 Ratio of 3.97-13.4 9.6-10 5.2-5.73 meander (7.6) length to bankfull width Lm/Wbkf Radius of 95-100 120-160 50-92.5 curvature RO Ratio of radius 2.35-2.48 2.4-3.2 1.3-2.4 of curvature to bankfull width Rc/Wbkf Belt width (WbIt) 70 170 75 Meander width 1.74 3.4 1.95 ratio Wblt/Wbkf Sinuosity 1.02 1.23 1.35 (stream length/ valley distance Variables Existing Proposed USGS Station Reference Channel Reach Reach Valley slope .004 .004 .0035 Average slope .0022 .0015 .0026 S.g Pool slope .00074-.0014 .00042-.0009 .0007-.0029 (Spool) .0011 .0017 Ratio of pool .34-.64 .25-.66 .27-1.12 slope to .5 (.66) average slope S ool/Sbkf Maximum pool 6.7-7.3 11.8 7.6-8.2 depth dpool 7.0 7.9 Ratio of pool 1.01-1.18 1.49 1.49-1.61 depth to (1.1) (1.51) average bankfull depth d ooi/dbkf Riffle slope .0026-.018 .0027-.005 .003-.0084 009 .0048 Ratio of riffle 1.18-8.18 1.79-3.3 1.15-3.23 slope to (4.09) (1.85) average slope Pool width 41.0-44.4 56 36.8-44.3 W ool 42.9 42.2 Ratio of pool 1.12 .93-1.12 width to 1.06 (1.07) bankfull width W ol/Wbkf Particle size distribution of channel material: D 16 0.288 mm 0.167 mm D 35 0.42 mm 0.35 mm D50 0.6 mm 0.9 mm D 84 76 mm 32 mm D 95 222 mm 45 mm Particle size distribution of bar material: D 16 0.34 mm 0.4 mm D35 2.36 mm 1.13 mm D50 4.4 mm 4.36 mm D 84 18 mm 15.1 mm D 95 52 mm 25 mm Largest size at 68 mm 28 mm toe of bar Morphological Characteristics of Salem Creek at Civitan Park Reach 3 and Mill Creek Reference Reach Variables Existing Proposed USGS Station Reference Channel Reach Reach Stream types E4/C4 E4 E4 Drainage area 42.5 42.5 46 mil Bankfull width 48.7-59.4 50 38.4-41.1 Wbkf 54.3 39.5 Bankfull mean 5.2 5.6 5.1-5.6 depth dbkf 5.33 Width/depth 10.44 8.9 7.0-8.1 ratio Wbkf/dbkf 7.5 Bankfull cross- 278.5-298 280 202.8-238.8 sectional area (285.7) (223.5) Abkf Bankfull mean 6.59 6.7 7.96 velocity (Vbkf) Bankfull 1885 1885 1779 discharge (cfs) Qbkf Bankfull 8.1 7.9 6.9-8.8 maximum (7.9) depth dmax Width of flood 300+ 300+ 500+ prone area w a Entrenchment 5.5 6 12.2 ratio W a/Wbkf Meander 330-350 330-350 200-220 length Lm 340 Ratio of 6.07-6.45 6.6-7 5.2-5.73 meander length to bankfull width Lm/Wbkf Radius of 110 110 50-92.5 curvature Rc Ratio of radius 2.03 2.2 1.3-2.4 of curvature to bankfull width Rc/Wbkf Belt width (Wblt) 170 170 75 Meander width 3.13 3.4 1.95 ratio Wblt/Wbkf Sinuosity 1.21 1.21 1.35 (stream length/ valley distance Variables Existing Proposed USGS Station Reference Channel Reach Reach Valley slope .004 .004 .0035 Average slope .00072 .0013 .0026 So„ Pool slope .00037-.00077 .0007-.0029 S of .00057 .0017 Ratio of pool .51-1.0 .28-.59 .27-1.12 slope to .79 .44 (.66) average slope S ool/Sbkf Maximum pool 10.4 11.8 7.6-8.2 depth 4001) (7.9) Ratio of pool 2 1.49 1.49-1.61 depth to (1.51) average bankfull depth d ool/dbkf Riffle slope .0012-.007 .0015-.008 .003-.0084 004 .0048 Ratio of riffle 1.09-6.36 1.15-6.46 1.15-3.23 slope to (3.72) (1.85) average slope Pool width 48.7-59.4 56 36.8-44.3 W ool 54.1 42.2 Ratio of pool .896-1.09 1.49 .93-1.12 width to (.996) (1.07) bankfull width W ool/Wbkf Particle size distribution of channel material: D 16 0.181 mm 0.167 mm D 35 0.27 mm 0.35 mm D50 0.3 mm 0.9 mm D84 1.0 mm 32 mm D95 6.0 mm 45 mm Particle size distribution of bar material: D 16 0.34 mm 0.4 mm D35 2.36 mm 1.13 mm D50 4.4 mm 4.36 mm D 84 18 mm 15.1 mm D 95 52 mm 25 mm Largest size at 68 mm 28 mm toe of bar HYDROLOGIC ANALYSIS SUPPORTING DOCUMENTATION SCS TR20 MODEL sc02a.OUT 1 *****************80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY****************** JOB TR-20 SUMMARY TITLE MATCH USGS Frequency Flood Equation Results Using TR-20 TITLE Urban equations for Salem creek at Civilian Park 6 RUNOFF 1 001 1 41.0 76.0 11.50 1 1 1 ENDATA 7 INCREM 6 0.10 7 COMPUT 7 001 001 0.0 2.6 1.0 2 2 1 1 ENDCMP 1 7 COMPUT 7 001 001 0.0 3.2 1.0 2 2 1 2 ENDCMP 1 7 COMPUT 7 001 001 0.0 4.0 1.0 2 2 1 5 ENDCMP 1 7 COMPUT 7 001 001 0.0 5.1 1.0 2 2 1 10 ENDCMP 1 ENDJOB 2 *******************************END OF 80-80 LIST******************************* 1 MATCH USGS Frequency Flood Equation Results Using TR-20 VERSION 02/16/2001 Urban equations for Salem creek at Civilian Park 2.05TEST ¦ 08:44:07 PASS 1 JOB NO. 1 PAGE 1 *** MESSAGE - DRAINAGE AREA EXCEEDS 25 SQ MI, IS IT CORRECT ? *** 6 RUNOFF 1 001 1 41.0 76.0 11.50 1 1 1 EXECUTIVE CONTROL INCREM MAIN TIME INCREMENT = .100 HOURS EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 1 STARTING TIME _ .00 RAIN DEPTH = 2.60 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. = 1 STORM NO. = 1 RAIN TABLE NO. = 2 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 20.09 1611.9 (RUNOFF) HYDROGRAPH POINTS FOR ALTERNATE = 1, STORM = 1 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 11.70 CFS .50 1.35 3.55 6.96 10.73 14.77 19.13 23.99 12.50 CFS 30 37 47 57 67 78 89 101 13.30 CFS 115 129 143 159 174 190 207 226 14.10 CFS 246 267 288 310 332 356 382 409 14.90 CFS 438 467 496 527 558 592 627 662 15.70 CFS 698 735 771 808 843 879 914 949 16.50 CFS 985 1020 1053 1085 1116 1146 1177 1206 17.30 CFS 1235 1263 1289 1313 1336 1360 1382 1404 18.10 CFS 1424 1442 1458 1474 1489 1504 1518. 1531 18.90 CFS 1543 1554 1565 1575 1584 1593 1600 1604 19.70 CFS 1607 1609 1611 1612 1612 1611 1610 1608 20.50 CFS 1606 1603 1600 1596 1591 1586 1580 1574 21.30 CFS 1568 1561 1553 1544 1534 1524 1513 1501 22.10 CFS 1489 1477 1463 1448 1433 1417 1400 1383 22.90 CFS 1367 1350 1334 1318 1302 1286 1270 1254 Page 1 sc02a.OUT 23.70 CFS 1239 1225 1212 1199 1185 1172 1159 1146 24.50 CFS 1133 1121 1109 1096 1084 1071 1060 1048 25.30 CFS 1036 1025 1013 1002 991 980 969 959 26.10 CFS 948 938 927 917 907 897 887 877 26.90 CFS 867 856 846 836 826 815 805 794 27.70 CFS 784 773 763 752 742 731 721 710 28.50 CFS 700 690 680 670 659 649 639 629 29.30 CFS 619 609 599 589 579 569 559 550 30.10 CFS 540 530 521 511 502 493 483 474 30.90 CFS 465 456 447 438 430 421 413 404 31.70 CFS 396 388 380 372 364 356 348 341 32.50 CFS 333 326 319 311 305 29B 291 284 33.30 CFS 278 271 265 259 253 247 241 235 34.10 CFS 230 224 219 214 209 204 199 194 34.90 CFS 189 185 181 176 172 16B 164 161 1 TR20 --- -------- ------- --------- ------ ----------- -------- -------- ------ -- SCS - MATCH USGS Frequency Flood Equation Re sults Us ing TR-2 0 VERSION 02/16/2001 Urban equations for Salem creek at Civil ian Park 2.05TEST 08:44:07 PASS 1 JOB NO. 1 PAGE 2 35.70 CFS 157 153 150 146 143 140 137 133 36.50 CFS 130 127 124 121 119 116 113 111 37.30 CFS 108 106 103 101 98 96 94 92 38.10 CFS 89.62 87.52 85.49 83.54 81.64 79.78 77.96 76.18 38.90 CFS 74.43 72.72 71.04 69.39 67.78 66.20 64.64 63.12 39.70 CFS 61.63 60.17 58.73 57.33 55.95 54.61 53.31 52.07 40.50 CFS 50.90 49.76 48-.65 47.57 46.51 45.48 44.47 43.47 41.30 CFS 42.51 41.56 40.63 39.72 38.82 37.95 37.09 36.25 42.10 CFS 35.43 34.63 33.84 33.06 32.30 31.55 30.82 30.09 42.90 CFS 29.39 28.69 28.01 27.34 26.68 26.03 25.40 24.77 43.70 CFS 24.16 23.55 22.95 22.36 21.78 21.21 20.65 20.10 44.50 CFS 19.56 19.02 18.49 17.98 17.47 16.96 16.47 15.98 45.30 CFS 15.49 15.01 14.54 14.07 13.61 13.15 12.70 12.26 46.10 CFS 11.82 11.38 10.95 10.53 10.13 9.76 9.44 9.15 46.90 CFS 8.87 8.61 8.35 8.10 7.87 7.64 7.41 7.20 47.70 CFS 6.99 6.78 6.58 6.39 6.21 6.02 5.85 5.67 48.50 CFS 5.51 5.34 5.19 5.03 4.88 4.74 4.60 4.46 49.30 CFS 4.33 4.20 4.07 3.95 3.83 3.71 3.60 3.49 50.10 CFS 3.38 3.28 3.18 3.08 2.99 2.89 2.80 2.71 50.90 CFS 2.63 2.54 RUNOF F ABOVE BASEFLOW (BASEFLOW = .00 CFS) .76 WATERSHED INCHE S; 19992 CFS-HRS; 1652.2 ACRE-FEET. DURAT ION(HRS) 4 8 12 16 20 24 28 32 FLOW( CFS) 1458 1085 7 63 456 230 108 48 20 DURAT ION(HRS) 36 39 FLOW( CFS) 6 3 TRUNCATED EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 1 EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 1 STARTING TIME _ .00 RAIN DEPTH - 3.20 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. = 1 STORM NO. = 2 RAIN TABLE NO. 2 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 19.64 2509.7 (RUNOFF) Page 2 sc02a.OUT HYDROGRAPH POI NTS FOR ALTERNATE = 1, STORM = 2 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 11.30 CFS .49 .71 1.02 1.52 2.50 4.50 8.62 14.56 12.10 CFS 21.13 28.18 35.82 44.40 54.64 67.76 83.32 99.89 1 TR20 ---- -------- ------ ---------- ------- ------- -------- ---------- ------ -- SCS - MATCH USGS Frequency Flood Equation Results Using TR-2 0 VERSION 02/16/200 1 Urban equations for Salem creek at Civilian Park 2.05TEST 08:44:07 PASS 2 JOB NO. 1 PAGE 3 12.90 CFS 117 135 154 174 196 219 243 268 13.70 CFS 294 320 349 379 412 446 480 515 14.50 CFS 552 591 633 678 724 771 819 868 15.30 CFS 919 973 1028 1085 1142 1200 1258 1316 16.10 CFS 1372 1427 1483 1538 1593 1647 1699 1749 16.90 CFS 1796 1843 1889 1934 1978 2020 2059 2095 17.70 CFS 2130 2165 2198 2230 2260 2286 2309 2332 18.50 CFS 2353 2374 2394 2412 2428 2444 2458 .2472 19.30 CFS 2484 2495 2503 2507 2509 2510 2510 2509 20.10 CFS 2507 2503 2499 2494 2488 2481 2474 2465 20.90 CFS 2456 2446 2435 2423 2410 2397 2383 2367 21.70 CFS 2349 2331 2311 2291 2270 2248 2225 2199 22.50 CFS 2173 2146 2119 2091 2063 2036 2010 1984 23.30 CFS 1958 1931 1905 1880 1856 1834 1812 1790 24.10 CFS 1769 1747 1726 1706 1686 1666 1646 1627 24.90 CFS 1607 1587 1569 1550 1532 1514 1496 1478 25.70 CFS 1460 1443 1427 1411 1394 1378 1362 1346 26.50 CFS 1330 1315 1299 1284 1268 1252 1237 1221 27.30 CFS 1205 1189 1173 1157 1141 1125 1110 1094 28.10 CFS 1078 1063 1047 1031 1016 1001 986 971 28.90 CFS 956 941 926 911 896 881 866 852 29.70 CFS 837 822 808 794 780 766 752 738 30.50 CFS 724 711 697 684 671 658 645 632 31.30 CFS 619 607 595 583 571 559 547 536 32.10 CFS 524 513 502 490 479 469 458 448 32.90 CFS 438 428 419 409 400 390 381 373 33.70 CFS 364 355 347 339 331 323 315 308 34.50 CFS 300 293 286 279 273 266 260 254 35.30 CFS 248 242 237 231 226 221 216 211 36.10 CFS 206 201 197 192 188 183 179 175 36.90 CFS 171 167 163 159 156 152 149 145 37.70 CFS 142 138 135 132 129 126 123 120 38.50 CFS 118 115 112 110 107 105 102 100 39.30 CFS 97.56 95.28 93.04 90.84 88.69 86.58 84.51 82.48 40.10 C CFS 80.50 78.56 76.69 74.93 73.25 71.62 70.03 68.48 40.90 CFS 66.97 65.49 64.04 62.62 61.22 59.86 58.53 57.22 41.70 CFS 55.94 54.68 53.45 52.24 51.06 49.90 48.75 47.63 42.50 CFS 46.53 45.45 44.39 43.35 42.32 41.31 40.32 39.35 43.30 CFS 38.39 37.45 36.53 35.62 34.72 33.84 32.96 32.11 44.10 CFS 31.26 30.43 29.61 28.80 28.00 27.22 26.44 25.68 44.90 CFS 24.93 24.19 23.46 22.74 22.02 21.32 20.62 19.93 45.70 CFS 19.25 18.58 17.91 17.25 16.61 15.97 15.34 14.73 46.50 CFS 14.14 13.62 13.16 12.75 12.36 11.99 11.63 11.28 47.30 CFS 10.95 10.63 10.32 10.01 9.72 9.44 9.16 8.89 48.10 CFS 8.63 8.37 8.13 7.89 7.65 7.43 7.21 6.99 48.90 CFS 6.79 6.59 6.39 6.20 6.01 5.83 5.65 5.48 49.70 CFS 5.32 5.15 5.00 4.84 4.69 4.55 1 TR20 --- -------- ------ ---------- -------- ------ -------- ----------- ----- --- SCS - MATCH USGS Frequency Flood Equation Results Using TR-20 VERSION 02/16/2001 Urban equations for Salem creek at Civilian Park 2.05TEST 08:44:07 PASS 2 JOB NO. 1 PAGE 4 Page 3 I sc02a.OUT RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS) 1.15 WATERSHED INCHES; 30469 CFS-HRS; DURATION(HRS) 4 8 12 16 20 24 FLOW(CFS) 2260 1647 1141 678 347 159 DURATION(HRS) 36 38 FLOW(CFS) 9 5 TRUNCATED 2517.9 ACRE-FEET. 28 32 70 30 EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 2 t i i i i i i i EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 1 STARTI NG TIME _ .00 RAIN DEPTH = 4.00 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. - 1 STORM NO. = 5 RAIN TABLE NO. = 2 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 19. 63 3857.9 (RUNOFF) HYDROGRAPH POINTS FOR ALTERNATE = 1, STORM - 5 HRS MAIN TIME IN CREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 10.40 CFS .39 .54 .72 .96 1.25 1.62 2.07 2.62 11.20 CFS 3.29 4.10 5.09 6.31 7.96 10.52 14.90 22.48 12.00 CFS 33 44 56 70 85 102 124 150 12.80 CFS 177 205 235 266 299 334 372 411 13.60 CFS 452 493 536 582 632 684 738 793 14.40 CFS 850 910 972 1039 1110 1183 1257 1333 15.20 CFS 1410 1491 1575 1662 1751 1840 1930 2020 16.00 CFS 2108 2195 2280 2365 2450 2534 2616 2695 16.80 CFS 2769 2841 2911 2980 3048 3114 3176 3233 17.60 CFS 3286 3338 3389 3438 3484 3526 3563 3596 18.40 CFS 3628 3658 3687 3714 3739 3761 3781 3800 19.20 CFS 3818 3833 3846 3855 3858 3857 3855 3852 20.00 CFS 3847 3840 3832 3822 3811 3798 3785 3770 20.80 CFS 3755 3737 3718 3698 3676 3654 3631 3606 21.60 CFS 3578 3548 3517 3484 3450 3416 3379 3340 22.40 CFS 3299 3256 3213 3168 3124 3080 3037 2995 23.20 CFS 2953 2911 2870 2829 2789 2751 2716 2682 24.00 CFS 2648 2614 2581 2548 2516 2484 2454 2423 24.80 CFS 2392 2361 2331 2302 2274 2246 2218 2190 25.60 CFS 2162 2135 2109 2084 2059 2034 2009 1985 26.40 CFS 1960 1936 1913 1889 1866 1842 1818 1794 27.20 CFS 1771 1747 1723 1699 1675 1651 1627 1604 1 TR20 ---- -- ---- ------- ----- --------- -------- ----- ---------- -------- - SCS - MATCH -- USGS Frequency Flood Equation Re sults Using TR-20 VERSION 02/16/2001 Urbane equations for Salem creek at Civilian Park 2.05TEST 08:44:07 PASS 3 JOB NO. 1 PAGE 5 28.00 CFS 1580 1557 1534 1511 1487 1465 1442 1420 28.80 CFS 1398 1376 1354 1332 1310 1289 1267 1246 29.60 CFS 1224 1203 1181 1160 1140 1119 1099 1079 30.40 CFS 1059 1039 1019 1000 980 961 942 924 31.20 CFS 905 887 869 852 834 817 800. 783 32.00 CFS 767 750 734 718 702 686 671 656 32.80 CFS 641 627 613 599 585 572 559 546 33.60 CFS 533 521 508 496 485 473 462 451 34.40 CFS 440 430 419 409 400 390 381 372 35.20 CFS 363 355 347 339 331 323 316 309 36.00 CFS 302 295 288 281 275 268 262 256 Page 4 sc02a.OU T 36.80 CFS 250 244 239 233 228 223 218 213 37.60 CFS 208 203 198 194 189 185 180 176 38.40 CFS 172 168 164 161 157 153 150 146 39.20 CFS 143 140 136 133 130 127 124 121 40.00 CFS 118 115 112 110 107 105 103 100 40.80 CFS 98.05 95.89 93.78 91.71 89.68 87.69 85.75 83.84 41.60 CFS 81.97 80.13 78.33 76.57 74.84 73.14 71.47 69.84 42.40 CFS 68.23 66.64 65.09 63.56 62.06 60.58 59.13 57.70 43.20 CFS 56.29 54.91 53.55 52.21 50.89 49.59 48.31 47.04 44.00 CFS 45.80 44.57 43.36 42.16 40.98 39.82 38.68 37.55 44.80 CFS 36.45 35.35 34.27 33.20 32.14 31.10 30.07 29.05 45.60 CFS 28.05 27.06 26.08 25.11 24.15 23.21 22.28 21.37 46.40 CFS 20.49 19.65 18.90 18.26 17.69 17.14 16.62 16.12 47.20 CFS 15.64 15.18 14.73 14.29 13.87 13.46 13.07 12.68 48.00 CFS 12.31 11.95 11.59 11.25 10.92 10.59 10.28 9.97 48.90 CFS 9.68 9.39 9.11 8.84 8.57 RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS) 1.74 WATERSHED INCHES; 45976 CFS-HRS; 379 9.5 ACRE-FEET. DURATION(HRS) 4 8 12 16 20 24 28 32 FLOW(CFS) 3450 2484 1675 1000 508 235 103 44 DURATION(HRS) 36 38 FLOW(CFS) 13 9 TRUNCATED EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 3 EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECT ION 1 STARTING TIME _ .00 RAIN DEPTH = 5.10 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. = 1 STORM NO. =10 RAIN TABLE NO. = 2 1 TR20 ------------ ------- -------- --------- -------- ------ --------- --------- SCS - MATCH USGS Frequency Flood Equation Results Using TR- 20 VERSION 02/16/2001 Urban equations for Salem creek at Civilian Park 2.05TEST 08:44:07 PASS 4 JOB NO. 1 PAGE 6 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 19.54 5895.3 (RUNOFF) HYDROGRAPH PO INTS FOR ALTERNATE = 1, STORM =10 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 9.30 CFS .45 .61 .79 1.02 1.29 1.61 2.00 2.45 10.10 CFS 2.98 3.59 4.30 5.12 6.06 7.13 8.36 9.77 10.90 CFS 11.38 13.21 15.29 17.67 20.40 23.51 27.13 31.62 11.70 CFS 38 47 61 79 99 120 143 169 12.50 CFS 200 236 279 323 370 418 469 523 13.30 CFS 581 642 705 770 837 906 980 1059 14.10 CFS 1142 1228 1316 1406 1500 1599 1705 1815 14.90 CFS 1929 2045 2162 2283 2409 2539 2673 2809 15.70 CFS 2946 3084 3221 3356 3487 3616 3745 3873 16.50 CFS 3999 4123 4241 4352 4459 4563 4666. 4766 17.30 CFS 4863 4954 5037 5115 5190 5263 5334 5400 18.10 CFS 5460 5511 5557 5601 5643 5682 5719 5752 18.90 CFS 5781 5807 5931 5853 5872 5887 5895 5894 19.70 CFS 5888 5880 5870 5857 5843 5826 5806 5784 I 20.50 CFS 5760 5735 5709 5680 5649 5616 5581 5544 21.30 CFS 5506 5466 5424 5378 5329 5277 5223 5169 Page 5 sc02a.OUT 22.10 CFS 5112 5053 4990 4924 4856 4787 4717 4647 22.90 CFS 4578 4510 4445 4380 4314 4250 4186 4124 23.70 CFS 4066 4011 3958 3905 3853 3801 3751 3701 24.50 CFS 3653 3605 3558 3510 3464 3418 3373 3329 25.30 CFS 3286 3244 3201 3159 3118 3078 3040 3002 26.10 CFS 2964 2926 2889 2852 2816 2780 2745 2709 26.90 CFS 2673 2638 2602 2566 2531 2495 2459 2423 27.70 CFS 2387 2352 2317 2283 2248 2214 2179 2145 28.50 CFS 2112 2079 2046 2014 1981 1949 1917 1885 29.30 CFS 1854 1822 1791 1760 1728 1698 1667 1637 30.10 CFS 1607 1578 1548 1519 1490 1462 1434 1406 30.90 CFS 1379 1351 1324 1297 1271 1246 1220 1195 31.70 CFS 1171 1146 1122 1098 1074 1051 1028 1005 32.50 CFS 982 960 938 917 897 877 857 838 33.30 CFS 818 800 781 763 745 728 710 694 34.10 CFS 677 661 646 630 615 600 586 572 34.90 CFS 559 546 533 520 508 496 485 474 35.70 CFS 463 453 442 432 422 413 403 394 36.50 CFS 385 376 367 358 350 342 334 327 37.30 CFS 319 312 305 298 291 284 277 271 38.10 CFS 264 258 252 246 241 235 230 225 38.90 CFS 220 215 210 205 200 195 191 186 39.70 CFS 182 177 173 169 165 161 157 154 40.50 CFS 150 147 144 140 137 134 131 129 41.30 CFS 126 123 120 117 115 112 110 107 42.10 CFS 105 102 100 98 95 93 91 89 1 TR20 ---- -- -- ------ ---------- ------ ----------- ------ ---------- ------ -- SCS - MATCH USGS Frequency Flood Equation Re sults Using TR-2 0 VERSION 02/16/2001 Urban equations for Salem creek at Civ ilian Park 2.05TEST 08:44:07 PASS 4 JOB NO. 1 PAGE 7 42.90 CFS 86.70 84.60 82.54 80.50 78.50 76.53 74.59 72.68 43.70 CFS 70.79 68.93 67.10 65.29 63.50 61.74 60.00 58.29 44.50 CFS 56.61 54.95 53.31 51.69 50.10 48.53 46.98 45.44 45.30 CFS 43.92 42.43 40.95 39.49 38.04 36.62 35.22 33.83 46.10 CFS 32.47 31.12 29.81 28.54 27.34 26.28 25.38 24.58 46.90 CFS 23.82 23.09 22.39 21.72 21.07 20.44 19.84 19.25 47.70 CFS 18.68 18.13 17.60 17.08 RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS) 2.62 WATERSHED INCHES; 69223 CFS-HR S; 5720 .6 ACRE-FEET. DURATION(HRS) 4 8 12 16 20 24 28 32 FLOW(CFS) 5263 3745 24 95 1 490 763 350 154 65 DURATION(HRS) 36 37 FLOW (CFS) 20 17 TRUN CATED EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 4 1 TR20 --- -------- ------ ---------- ------ ----------- ------ ---------- ----- --- SCS - MATCH USGS Frequency Flood Equation Results Using TR-2 0 VERSION 02/16/2001 Urban equations for S alem creek at Civilian Park 2.05TEST 08:44:07 SUMMARY, JOB NO. 1 PAGE 8 SUMMARY TABLE 1 SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED. A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES: F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH XSECTION/ STANDARD PEAK DISCHARGE C Page 6 sc02a.OUT STRUCTURE CONTROL DRAINAGE RUNOFF ------------------ --------- --------- ID OPERATION AREA AMOUNT ELEVATION TIME RATE RATE (SQ MI) (IN) (FT) (HR) (CFS) (CSM) RAINFALL OF 2.60 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. RAINTABLE NUMBER 2, ARC 2 MAIN TIME INCREMENT .100 HOURS ALTERNATE 1. STORM 1 --------------------------- XSECTION 1 RUNOFF 41.00 .76 --- 20.09 1612 39.3 RAINFALL OF 3.20 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. ALTERNATE 1 STORM 2 ----- ------------ ---------- 1.00 1.15 --- 19.84 XSECTION 1 --RUNOFF 41.00- 2510 61.2 RAINFALL OF 4.00 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. ALTERNATE 1 STORM 5 XSECTION 1 RUNOFF 41.00 1.74 --- 19.63 ------------ -------------- 3858 94.1 RAINFALL OF 5.10 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. ALTERNATE 1 STORM 10 XSECTION 1 RUNOFF 41.00 2.62 --- 19.54 ----------------- --------- 5895 143.8 1 TR20 -------------------------------------------------------- --------- --- SCS - MATCH USGS Frequency Flood Equation Results Using TR-20 VERSION 02/16/2001 Urban equations for Salem creek at Civilian Park 2.05TEST E 08:44:07 SUMMARY, JOB NO. 1 PAGE 9 SUMMARY TABLE 3 --------------- STORM DISCHARGES (CFS) AT XSECTIONS AND STRUCTURES FOR ALL ALTERNATES QUESTION MARK (?) AFTER: OUTFLOW PEAK - RISING TRUNCATED HYDROGRAPH. XSECTION/ DRAINAGE STRUCTURE AREA STORM NUMBERS.......... ID (SQ MI) 1 2 5 10 XSECTION 1 41.00 --------------------------- ALTERNATE 1 1612 2510 3858 5895 1 TR20 ------------------------------------------------------- ---------- --- SCS - MATCH USGS Frequency Flood Equation Results Using TR-20 VERSION 02/16/2001 Urban equations for Salem creek at Civilian Park 2.05TEST END OF 1 JOBS IN THIS RUN Page 7 sc02a.OUT SCS TR-20, VERSION 2.05TEST FILES INPUT = d:\s\soft\tr20_w99\ward\sc02a.DAT , GIVEN DATA FILE OUTPUT = d:\s\soft\tr20 w99\ward\scO2a.OUT , DATED 02/16/2001,08:44:07 FILES GENERATED - DATED 02/16/2001,08:44:07 NONE! TOTAL NUMBER OF WARNINGS = 0, MESSAGES 1 *** TR-20 RUN COMPLETED *** Page 8 sc02.OUT 1 *****************80-80 LIST OF INPUT DATA FOR TR-20 HYDROLOGY****************** JOB TR-20 SUMMARY TITLE Match USGS Rural Frequency Flow Equation using SCS TR-20 TITLE Rural equation for Salem Creek at Civilian Park JANUARY, 2000 6 RUNOFF 1 001 1 41.0 71.0 11.60 1 1 1 ENDATA 7 INCREM 6 0.10 7 COMPUT 7 001 001 0.0 2.6 1.0 2 2 1 1 ENDCMP 1 7 COMPUT 7 001 001 0.0 3.2 1.0 2 2 1 2 ENDCMP 1 7 COMPUT 7 001 001 0.0 4.0 1.0 2 2 1 5 ENDCMP 1 7 COMPUT 7 001 001 0.0 5.1 1.0 2 2 1 10 ENDCMP 1 ENDJOB 2 ********** ****** ***************END OF 80-80 LIST******************* ************ 1 TR20 ----- ------ --------------------------------------------------- ------ SCS - Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Salem Creek at Civilian Park JANUARY, 2000 2.05TEST 08:49:48 PASS 1 JOB NO. 1 PAGE 1 *** MESSAG E - DRAINAGE AREA EXCEEDS 25 SQ MI, IS IT CORRECT ? *** 6 RUNOFF 1 001 1 41.0 71.0 11.60 1 1 1 EXECUTIVE CONTROL INCREM MAIN TIME INCREMENT - .100 HOURS EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 1 STARTING TIME - .00 RAIN DEPTH = 2.60 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. = 1 STORM NO. = 1 RAIN TABLE NO. = 2 OPERATION RUNOFF XSECTION 1 ' PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 20.54 1110.5 (RUNOFF) HYDROGRAPH POINTS FOR ALTERNATE = 1, STORM - 1 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 11.80 CFS .29 1.40 3.39 5.58 7.96 10.50 13.23 16.36 12.60 CFS 20.73 26.37 32.37 38.71 45.35 52.27 59.56 67.62 13.40 CFS 76 86 95 105 115 125 137 149 14.20 CFS 162 176 190 204 218 234 252 270 ' 15.00 CFS 288 307 326 346 367 390 413 436 15.80 CFS 460 484 508 532 555 579 602 626 16.60 CFS 650 674 696 717 738 759 780 800 17.40 CFS 821 840 857 874 891 907 924 940 18.20 CFS 954 967 979 991 1002 1013 1024. 1034 19.00 CFS 1044 1052 1061 1069 1077 1085 1091 1095 19.80 CFS 1098 1102 1104 1106 1108 1110 1110 1111 20.60 CFS 1110 1110 1109 1108 1107 1105 1102 1100 21.40 CFS 1097 1094 1090 1086 1080 1075 1069 1063 22.20 CFS 1056 1049 1041 1033 1024 10.14 1004 994 23.00 CFS 984 974 965 955 945 935 925 915 Page 1 sc02.OUT RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS) .88 WATERSHED INCHES; 23225 CFS-HRS; 1919.3 ACRE-FEET. DURATION(HRS) 4 8 12 16 20 24 28 32 FLOW(CFS) 1674 1262 893 536 273 128 58 25 DURATION(HRS) 36 39 FLOW(CFS) 8 3 TRUNCATED EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 2 EXECUTIVE CONTROL COMPUT FROM XSECTION 1 TO XSECTION 1 STARTING TIME _ .00 RAIN DEPTH = 4.00 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT - .100 HOURS ALTERNATE NO. = 1 STORM NO. = 5 RAIN TABLE NO. = 2 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS) PEAK ELEVATION(FEET) 19.95 3008.0 (RUNOFF) HYDROGRAPH POINTS FOR ALTERNATE = 1, STORM - 5 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA = 41.00 SQ.MI. 11.30 CFS .41 .61 .91 1.40 2.40 4.51 9.26 16.31 12.10 CFS 24 32 41 51 62 77 96 115 12.90 CFS 136 157 179 202 227 255 283 312 13.70 CFS 342 373 406 441 480 519 560 601 14.50 CFS 644 689 738 790 844 899 955 1013 15.30 CFS 1072 1135 1200 1267 1335 1404 1473 1542 16.10 CFS 1609 1674 1740 1806 1871 1937 2000 2060 16.90 CFS 2117 2173 2228 2283 2336 2388 2436 2480 17.70 CFS 2523 2564 2605 2645 2683 2716 2745 2773 18.50 CFS 2799 2825 2850 2873 2894 2913 2931 2949 19.30 CFS 2965 2980 2992 3001 3005 3007 3008 3008 20.10 CFS 3007 3005 3001 2996 2989 2983 2975 2966 20.90 CFS 2957 2946 2934 2921 2907 2892 2877 2860 21.70 CFS 2841 2820 2799 2776 2752 2728 2702 2674 22.50 CFS 2644 2613 2581 2549 2516 2483 2452 2421 23.30 CFS 2390 2359 2328 2297 2267 2239 2212 2187 24.10 CFS 2161 2135 2110 2085 2061 2037 2014 1990 24.90 CFS 1967 1943 1920 1897 1876 1854 1832 1811 25.70 CFS 1789 1768 1748 1728 1708 1689 1670 1650 26.50 CFS 1631 1612 1593 1575 1556 1537 1519 1500 27.30 CFS 1481 1462 1443 1424 1404 1385 1365 1346 28.10 CFS 1327 1309 1290 1271 1252 1233 1214 1196 1 TR20 -------------------------------------------------------------------- SCS - Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Salem Creek at Civilian Park JANUARY, 2000 2.05TEST 08:49:48 PASS 3 JOB NO. 1 PAGE 5 28.90 CFS 1178 1160 1142 1124 1106 1088 1070 1052 29.70 CFS 1034 1017 999 982 964 947 930 913 30.50 CFS 897 880 864 847 831 816 800 784 31.30 CFS 769 753 738 723 709 694 680. 666 32.10 CFS 652 638 625 611 598 584 571 559 32.90 CFS 546 534 522 510 499 488 476 465 33.70 CFS 455 444 434 424 414 404 394 385 34.50 CFS 376 367 358 350 342 334 326 318 !r 35.30 CFS 311 304 297 290 283 277 270 264 36.10 CFS 258 253 247 241 236 230 225 220 Page 4 sc02.OUT 36.90 CFS 215 210 205 200 196 191 187 183 37.70 CFS 179 175 171 167 163 159 155 152 38.50 CFS 148 145 142 138 135 132 129 126 39.30 CFS 123 120 118 115 112 110 107 105 40.10 CFS 102 100 97 95 93 91 89 87 40.90 CFS 84.68 82.82 81.00 79.22 77.48 75.78 74.11 72.47 41.70 CFS 70.87 69.30 67.76 66.26 64.78 63.33 61.91 60.52 42.50 CFS 59.15 57.81 56.49 55.19 53.92 52.67 51.44 50.23 43.30 CFS 49.05 47.88 46.73 45.61 44.50 43.40 42.33 41.27 44.10 CFS 40.22 39.19 38.18 37.18 36.20 35.23 34.27 33.34 44.90 CFS 32.41 31.50 30.60 29.71 28.84 27.97 27.11 26.27 45.70 CFS { 25.43 24.61 23.79 22.98 22.19 21.40 20.62 19.85 b 46.50 CFS 19.09 18.35 17.62 16.92 16.30 15.76 15.27 14.80 47.30 CFS 14.36 13.93 13.52 13.12 12.74 12.37 12.00 11.65 48.10 CFS 11.31 10.98 10.66 10.35 10.05 9.75 9.46 9.19 48.90 CFS 8.92 8.65 8.40 8.15 7.91 7.67 7.45 7.22 49.70 CFS 7.01 6.79 6.59 6.39 6.20 6.01 5.82 RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS ) L 1.39 WATERSHED INCHES; 36872 CFS-HRS; 304 7.1 ACRE-FEET. DURATION(HRS) 4 8 12 16 20 24 28 32 FLOW(CFS) 2 716 2000 1385 831 424 200 89 38 r I DURATION(HRS) 36 39 LLL FLOW(CFS) 12 6 TRUNCATED f EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLET ED FOR PASS 3 EXECUTIVE CONTROL COMPUT FROM XSECTION 1 T O XSECT ION 1 STARTING TIME _ .00 RAIN DEPTH = 5.1 0 RAIN DURATION = 1.00 ANT. RUNOFF COND. = 2 MAIN TIME INCREMENT = .100 HOURS ALTERNATE NO. = 1 STORM NO. =10 RAIN TAB LE NO. = 2 1 TR20 ------------ ------- -------- --------- ------- ------- --------- --------- SCS - Match USGS Rural Frequency Flo w Equat ion usi ng SCS TR-20 VERSION 02/16/2001 Rural equation for Sa lem Creek at Civ ilian P ark JANUARY, 2000 2.05TEST 08:49:48 PASS 4 JOB NO. 1 PAGE 6 OPERATION RUNOFF XSECTION 1 PEAK TIME(HRS) PEAK DISCHARGE(CFS ) PEAK ELEVATION(FEET) 19.71 4827.5 (RUNOFF) HYDROGRAPH PO INTS FOR ALTERNATE = 1, STORM =10 HRS MAIN TIME INCREMENT = .100 hr, DRAINAGE AREA 41.00 SQ.MI. 10.40 CFS .40 .56 .76 1.02 1.35 1.76 2.27 2.90 11.20 CFS 3.67 4.62 5.77 7.17 9.07 12.02 17.04 26.37 12.00 CFS 39 53 68 84 102 123 150 182 12.80 CFS 216 251 287 325 365 408 455 503 13.60 CFS 553 604 656 712 772 837 904 972 14.40 CFS 1042 1114 1189 1271 1359 1448 1540 1633 15.20 CFS 1728 1826 1929 2037 2146 2257 2369 2481 16.00 CFS 2592 2700 2805 2911 3016 3121 3225 3325 16.80 CFS 3420 3509 3597 3684 3769 3853 3933. 4007 17.60 CFS 4074 4139 4203 4265 4326 4382 4431 4474 18.40 CFS 4514 4553 4590 4625 4658 4688 4714 4739 19.20 CFS 4762 4784 4803 4818 4826 4828 4826 4824 20.00 CFS 4819 4813 4805 4794 4781 4767 4751 4735 20.80 CFS 4717 4697 4675 4651 4626 4600 4572 4543 21.60 CFS 4512 4478 4440 4401 4360 4319 4276 4231 Page 5 sc02.OUT 22.40 CFS 4182 4131 4078 4024 3969 3913 3858 3805 23.20 CFS 3754 3702 3651 3599 3548 3498 3452 3408 24.00 CFS 3366 3324 3282 3240 3199 3159 3121 3082 24.80 CFS 3044 3006 2968 2930 2894 2858 2823 2788 25.60 CFS 2754 2719 2685 2652 2621 2590 2559 2528 26.40 CFS 2497 2466 2436 2407 2377 2348 2318 2288 27.20 CFS 2259 2229 2199 2169 2139 2109 2079 2048 28.00 CFS 2019 1990 1960 1931 1902 1873 1844 1815 28.80 CFS 1788 1760 1732 1705 1677 1650 1622 1595 29.60 CFS 1568 1542 1515 1488 1462 1436 1410 1384 30.40 CFS 1359 1334 1309 1284 1260 1236 1212 1188 31.20 CFS 1165 1141 1118 1096 1074 1052 1031 1009 32.00 CFS 988 968 947 927 907 887 867 847 32.80 CFS 828 810 792 774 757 740 723 706 33.60 CFS 690 674 659 643 628 614 599 585 34.40 CFS 571 558 545 532 519 507 495 483 35.20 CFS 472 461 451 440 430 420 411 401 36.00 CFS 392 383 375 366 358 350 342 334 36.80 CFS 326 319 311 304 297 291 284 278 37.60 CFS 271 265 259 253 247 241 236 230 38.40 CFS 225 220 215 210 205 201 196 192 39.20 CFS 187 183 179 175 171 167 163 159 40.00 CFS 155 151 148 144 141 138 134 131 40.80 CFS 128 126 123 120 118 115 113 110 41.60 CFS 108 105 103 101 98 96 94 92 42.40 CFS 89.89 87.85 85.85 83.88 81.95 80.05 78.19 76.35 43.20 CFS 74.54 72.77 71.02 69.30 67.61 65.95 64.31 62.69 1 Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Sa lem Creek at Civilian Park JANUARY, 2000 2.05TEST 08:49:48 PASS 4 JOB NO. 1 PAGE 7 44.00 CFS 61.09 59.52 57.97 56.44 54.93 53.45 51.98 50.54 44.80 CFS 49.12 47.72 46.34 44.98 43.63 42.30 40.98 39.68 45.60 CFS 38.40 37.13 35.88 34.64 33.42 32.21 31.02 29.84 46.40 CFS 28.68 27.54 26.42 25.32 24.29 23.37 22.58 21.88 47.20 CFS 21.21 20.57 19.95 19.36 18.78 18.23 17.69 17.18 48.00 CFS 16.67 16.18 15.71 15.25 14.80 14.36 13.94 13.53 48.80 CFS 13.13 12.74 12.36 12.00 11.64 11.30 RUNOFF ABOVE BASEFLOW (BASEFLOW = .00 CFS) t 2.19 WATERSHED INCHES; 57976 CFS-HRS; 4791.1 ACRE-FEET. t DURATION(HRS) 4 8 12 16 20 24 28 32 I` FLOW(CFS) 4326 3121 21 39 1271 656 304 134 58 DURATION(HRS) 36 38 FLOW(CFS) 17 11 TRUN CATED EXECUTIVE CONTROL ENDCMP COMPUTATIONS COMPLETED FOR PASS 4 1 TR20 -------------------------------------------------------------------- SCS - Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Salem Creek at Civilian Park JANUARY, 2000 2.05TEST 08:49:48 SUMMARY, JOB NO. 1 PAGE 8 SUMMARY TABLE 1 --------------- SELECTED RESULTS OF STANDARD AND EXECUTIVE CONTROL IN ORDER PERFORMED. A CHARACTER FOLLOWING THE PEAK DISCHARGE TIME AND RATE (CFS) INDICATES: F-FLAT TOP HYDROGRAPH T-TRUNCATED HYDROGRAPH R-RISING TRUNCATED HYDROGRAPH Page 6 sc02.OUT XSECTION/ STANDARD PEAK DISCHARGE STRUCTURE CONTROL DRAINAGE RUNOFF ------- ------------ -------- --------- ID OPERATION AREA AMOUNT ELEVATI ON TIME RATE RATE (SQ MI) (IN) (FT) (HR) (CFS) (CSM) RAINFALL OF 2.60 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. RAINTABLE NUMBER 2, ARC 2 MAIN TIME INCREMENT .100 HOURS ALTERNATE 1 STORM 1 C ----- _------ _____ XSECTION ___ 1--RUNOFF ____ 41.00_ .54 --- 20.54 1111 27.1 RAINFALL OF 3.20 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. f G ALTERNATE 1 STORM 2 --------------------------- XSECTION 1 RUNOFF 41.00 .88 --- 20.22 1850 45.1 RAINFALL OF 4.00 inches AND 24.00 hr DURATION, BEGINS AT .0 hrs. ALTERNATE 1 STORM 5 --------------------------- t XSECTION 1 RUNOFF 41.00 1.39 --- f 19.95 3008 73.4 RAINFALL OF 5.10 inches AND 24.00 hr DURATION, I BEGINS AT .0 hrs. ALTERNATE 1 STORM 10 --------------------------- XSECTION 1 RUNOFF 41.00 2.19 --- 19.71 4828 117.8 1 TR20 --------------------------------------------- ------------ -------- --- SCS - Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Salem Creek at Civilian Park JANUARY, 2000 2.05TEST 08:49:48 SUMMARY, JOB NO. 1 PAGE 9 SUMMARY TABLE 3 STORM DISCHARGES (CFS) AT XSECTIONS AND STRUCTURES FOR ALL ALTERNATES QUESTION MARK (?) AFTER: OUTFLOW PEAK - RISING TRUNCATED HYDROGRAPH. XSECTION/ DRAINAGE STRUCTURE AREA STORM NUMBERS.......... ID (SQ MI) 1 2 5 10 XSECTION 1 41.00 --------------------------- ALTERNATE 1 1111 1850 3008 4828 1 TR20 -------------------------------------------------------------------- SCS - Match USGS Rural Frequency Flow Equation using SCS TR-20 VERSION 02/16/2001 Rural equation for Salem Creek at Civilian Park JANUARY, 2000 2.05TEST END OF 1 JOBS IN THIS RUN Page 7 sc02.OUT SCS TR-20, VERSION 2.05TEST FILES INPUT = d:\s\soft\tr20 w99\ward\sc02.DAT , GIVEN DATA FILE OUTPUT = d:\s\soft\tr20 w99\ward\sc02.OUT , DATED 02/16/2001,08:49:48 FILES GENERATED - DATED 02/16/2001,08:49:48 NONE! TOTAL NUMBER OF WARNINGS = 0, MESSAGES 1 *** TR-20 RUN COMPLETED *** Page 8 Table 3.41 Upper Salem Creek Watershed 2000 Land Use Hydrologic/Hydraulic Summary -Node Location Drainage Discharge (cfs) WSEI (ft) Name Description Area 10- - year 25- year 30- year 100- ' year 10- year 25- year SO- year 100--.- year:. Upper Salem Creek SC005 Upstream of confluence with Peters Creek 45.62 6,170 7,113 8,588 10,689 742.8 743.7 745.9 747.6 SC085 Main Street 44.01 6363 7,410 8,615 10,367 755.4 756.4 757.5 758.3 SC135 Highway US-52 42.48 6,900 7,811 8,995 10,687 760.2 761.1 762.3 763.6 SC 170 Martin Luther King Jr. Drive 41.74 7,241 8,282 9,478 11,183 764.6 765.6 766.9 768.4 SC175 Upstream of confluence with Brushy Fork Creek 29.31 7,173 8,165 9,423 11,040 764.9 765.8 767.0 768.5 SC200 Reynolds Park Road 27.38 3,271 3,745 4,403 5,266 765.9 766.7 767.9 769.2 SC265 Salem Lake Spillway 26.24 3,274 3,750 4,406 5,272 778.7 779.1 779.7 780.4 Tributary 0 005 At mouth 0.10 200 247 250 200 746.3 747.1 748.0 749.9 040 Cascade Avenue 0.03 74 80 84 88 788.4 790.9 793.2 795.2 Tributary P P05 At mouth, Walnut Street 0.09 57 61 65 69 760.2 760.2 760.3 760.3 P30 Washington Avenue 0.03 58 62 66 71 808.1 809.0 810.1 811.3 Tributary Q Q03 At mouth 0.23 249 249 246 241 750.6 751.5 752.8 754.2 Q20 Main Street 0.16 413 450 497 552 776.6 776.7 776.7 776.8 Q55 " Haled Street 0.08 134 140 147 155 840.0 840.5 841.1 841.8 I Upper Salem Creek Watershed Master Plan Table 3.4-1 Upper Salem Creek Watershed 2000 Land Use Hydrologic/Hydraulic Summary Node Location Drainage Discharge (cfs_) WSEL (ft) Name Description Area (sq. mi.) 10- year 257 year 50- year 1 00- year 10- year ' ".ZS- year SO- , year : i00- year' Tributary R R005 At mouth 0.64 1,015 1,145 1,223. 1,469 754.9 755.8 756.9 757.4 R055 115 ft upstream of West Street 0.20 475 573 1 1660 i 749 778.9 779.2 779.4 779.6 RB05 S At mouth, Academy 0.27 393 443 508 565 781.4 781.5 781.8 781.9 RB35 Wachovia Street 0.23 308 333 366 407 814.6 815.3 816.4 817.7 RB57 Highway 1-40 Business 0.13 255 270 288 305 844.1 844.1 844.0 843.9 Tributary S SOS I At mouth, Alder Street 0.16 161 162 159 160 756.9 757.4 758.6 759.6 S30 Mock Street 0.07 180 193 204 218 796.9 797.8 799.4 800.6 Cloverleaf Branch - Tributary T T005 I At mouth 0.89 1,417 1,433 1,545 1,620 757.7 758.6 759.9 760.9 T020 Stadium Drive 0.85 1,421 1,477 1,604 1,700 773.3 773.5 773.8 774.2 T035 Highway l-40Business 0.70 1,159 1,157 1,233 1,292 811.7 811.7 813.5 814.0 T060 Linden Street 0.38 914 978 1,304 2,245 834.7 834.9 836.1 836.4 T080 Third Street 0.14 241 250 263 327 853.3 854.4 856.4 856.6 Tributary U U05 At mouth, Jones Street 0.15 322 388 392 488 762.0 763.1 764.5 766.2 U15 Diggs Boulevard 0.10 314 344 385 421 762.0 763.1 764.5 766.2 3-12 i s (See Flg. 3-2b) Basin Boundary ® Winston-Salem City Boundary - Major Roads - Streams - Model Reach • Model Node m CD N w m scale: 1 in = .2 miles N n .2 0.1 0 Mi .2 0.4 Model Schematic June 2W City of Winston-Salem HDRDVbwwi M Im Upper Salem Creek Watershed Flg 3-2a ofThecardinas Master Plan i i (See Fig. 3-2a) ---_P30 P20 _ SO UA05 U15 P15 ALO L120 V25 ? P25 P 5 020- S U 1,2 U25 P10 0 S15 UA U30 Q R 17 UA1 R010 00 S20 C SC0755 R10 j C V27 3 V30 SC050 SCO 3,> iR20 S25 > CD C065 S30 D SC047 p03 I? V35 m 005 s35 0 ` ?,3 ? GQ SC045 S40 V40 ay a A3 0 G? !?C 010 11 S47 y V45 Ib N/ SC040 ae S50 0 SCO35? 010 015 p12t_ 005 - Basin Boundary 017 1030 '- SC030 025 030 035 m Winston-Salem City Boundary 35 037 040 / - Major Roads SC025 ? 040 050 G55 060 070 SC020 p75 Streams SC015 C010 - Model Reach 5 .?r Model Node N ma scale: 1 in = .2 miles I .2 0.1 0 mi .2 0.4 Im Model Schematic June 2000 City of Winston-Salem HDR Engineering, inc. Upper Salem Creek Watershed Fig 3.2b of The Carolinas Master Plan I I u Maximum Flows and Velocities (Existing Hydraulic Conditions) Appendix Lu>k ame C035-030 SCO40-035 SCO45-040 SCO47-045 SC050-047 SC055-050 SC060-055a = .10 - 260 6289 6326 6354 6373 6390 5719 2 Mar F -25- 146 7176 7212 7241 7266 7287 6265 000Land low (cfs) 0-vr 508 8537 8569 , 8591 8615 8640 6951 Use - Eust _ :100 yr 0361 10341 10353 10366 10384 10409 7867 in H drau . 10 r .1 2.8 3.6 3.5 4.0 5.3 fic Conditi Max Vel 5?yr - .1 2.8 3.6 3.4 4.0 5.5 ons , ocity (fps) 50- . .1 2.8 3.5 3.4 3.9 5.6 -. ,--.- :.100 3.1 2.8 3.3 3.2 3.7 5.4 0 262 6291 6326 6353 6373 6390 Z Max F 5 r . 7150 7183 7219 7248 7272 7292 010 Land Use - Existi low (cfs) . 50 yr 100 r 8508 10359 8534 10341 8563 10354 8586 10365 8612 -10386 8636 10411 n g Hydrau 0 yr 3.1 2.8 3.6 3.5 4.0 53 lic Conditi Max.Vel 5-yr 3.1 -2.8 3.b 3.4 4.0 5.5 ons ocit (s) 0- 3.1 2.8 3.5 3.4 3.9 5.6 0 r 3.1 2.8 3.3 3.2 3.7 5.4 0 6202 1 6228 6264 6288 6307 6322 2 Max F 5- 7152 7183 7222 7250 7275 7294 020 Land low. (cfs) 0 8518 8544 8574 8599 8622 8646 Use Existi 0 yr 10363 10344 10356 10367 10384 10409 n ,Hydrau -vr , 3.1 2.8 3.6 35 4.0 5.2 lic Conditi Max Ve l 25 yr 3.1 2.8 3.6 3.4 4.0 5.5 ons a k`SO .. 3.1 2.8 3.5 3.4 3.9 5.6 4 00 -yr 3.1 2.8 3.3 3.2 3.7 5.4 SC060-055b SC065-060 684 6393 1038 7294 1708 8649 2563 1041 6.7 6.4 6.9 6.9 7.1 7.3 7.3 8.0 5719 685 6268 1040 6949 1706 7865 2562 6.7 6.4 6.9 6.9 7.1 7.3 7.3 7.9 5683 654 6269 1041 6957 1712 7866 2563 6.6 6.3 6.9 6.9 7.1 7.3 7.3 8.0 SC070-065 SC075-070a SC075-070b SC075-070o SC080-075 SC085-080 6396 3799 2598 0 6427 6363 7301 4418 2889 0 7344 7257 , 8654 5008 2978 409 8682 8615 5 10425 5131 2976 1799 10445 10367 4.8 7.0 13.0 4.8 0.0 3.8 4.8 6.9 14.4 55 0.0 3.7 4.8 6.7 15.7 5.7 2.9 3.7 4.6 6.6 15.7 5.7 5.9 3.6 6395 - 6397 3804 2598 - 0 6431 7299 7306 4423 2890 0 7347 8646 8650 5007, 2978 408 8669 _ 10416 ' 10422 5130 2976 1798 1044-4 4.8 7.0 , 13.0 4.8 0.0 3.8 -4.8 6.9 14.4 - 5.5 0.0 3.7 4.8 6.7 15.7 5.7 2.9 3.7 4.6 6.6 15.7 5.7 5.9 3.6 6326 6328 3763 2573 0 6362 7301 7309 4425 2891 0 7351 8657 8670 5017 2983 412 8677 10417 10423 5130 2977 1799 10450 4.8 7.0 12.9 4.7 0.0 3.7 4.8 6.9 14.4 5.5 0.0 3.7 4.8 6.7 15.7 5.7 2.9 3.7 4.6 6.6 15.7 5.7 5.9 3.6 SC090-085a SC090-085b 3659 644 3617 631 3546 627 3489 617 6.7 4.9 7.0 4.8 7.6 4.7 8.8 4.6 6357 3652 7262 3614 8611 10366 354`: ; 3493 6.6 4.9 .7.0 4.8 7.6 4.7 8.8 4.6 6296 3677 7264 3614 8614 3547 10367 3489 6.6 4.9 7.0 4.8 7.6 4.7 8.8 4.6 SC095-090 6363 7260 8618 10370 3.6 35 3.4 3.4 642 637 627, 618 = 3.6 35 - 3.4 14 648 636 627 617 3.6 3.5 3.4 3.4 SC 100-095a 3179 3156 3081 2985 32 3.2 3.2 3.1 6358 7262 8616 10367 3.2 3.2 3.2 3.1 6300 7266 8617 10370 3.2 3.2 3.2 3.1 SC100-095b SC105-100 658 6384 660 7274 641 8631 624 10368 4.8 4.1 4.8 4.1 4.7 4.0 4.6 4.0 3176 658 3153 656 3079 641 2985 624 4.8 4.1 4.8 -4.1 4.7 --4.0 4.6 4.0 3185 662 3152 654 3076 641 2985 624 4.8 4.2 4.8 4.1 4.7 4.0 4.6 4.0 SC110-105 6460 7332 8670 10383 2.6 2.6 2.6 2.6 6379 . 7280 8626 10369 2.6 2.6 2-6 2.6 6327 7281 8629 10369 2.6 2.6 2.6 2.6 SCI 15-110 6569 7432 8732 1039 2.1 2.1 2.1 2.1 6456 7338 8667 10378 2.1 -2.1 2.1 .2'1 6405 7339 8672 , 10382 2.1 2.1 2.1 2.1 SC 120-115 6733 7595 8863 4 1042 4.3 4.3 4.2 4.2 6570 - 7440 - 8724 10392 4.3 4-3 4.2 4.2 6525 7439 8732 10397 4.3 4.3 4.2 4.2 . SC 123-120 SC 125-123 SC127-125 SC130-127 6829 6843 6827 6842 7698 7712 7695 7712 8965 8981 8964 8985 9 10463 10465 10423 10437 3.0 4.8 5.6 5.1 3.0 4.8 5.7 5.3 3.0 4.9 5.9 5.5 3.0 4.9 6.1 5.7 6736 6827 6841 6824 7599 7699 7714 7695 8859 8963 8979 8962 10430 10458 . 10462 10420 3.0 4.8 5.6 5.1 3.1 4.8 5.7 5.3 3.0 4.9 5.9 5.5 3.0 4.9 6.1 5.7 6695 6796 6811 6796 7600 7701 7715 7697 8860 8963 8980 8961 10430 10469 10472 10428 3.1 4.9 5.6 5.2 3.1 4.8 5.7 5.3 3.0 4.9 5.9 5.5 3.0 4.9 6.2 5.7 SC 135-130a 4586 5099 5846 668 3.9 4.0 4.1 4.3 .6839 7712 8983 - 10433 3.9 4.0 4.2 43 6810 7714 8981 10438 3.9 4.0 4.1 4.3 SC135-130b SC135-130c SC135-130o SC 140-135 SC 145-140a SC 145-140b SC 145-140o SC 150-145 SC 155-150 SC 160-155 SC 165-160 SC170-165a SC 170-165b SC 170-165c SC 175-170 SC180 175 SC 185-180 SC 190-185 SC195-190 SC200-195a 1317 948 0 6853 4233 2627 0 6866 6941 7034 7112 5976 1210 0 7174 3281 3276 3273 3270 2321 1510 1112 0 7736 4725 3015 0 7736 7821 7937 8075 6589 1582 10 8165 3767 3754 3749 3741 2605 1793 1356 0 9004 5424 3578 0 9013 9112 9210 9324 7275 2084 120 9423 4459 4433 4418 4401 2986 1 2120 1641 0 10447 6217 4229 0 10456 10545 10642 10722 8007 2659 249 10844 5346 5323 5300 5275 3474 5.4 5.3 5.2 0.0 4.8 6.8 6.5 0.0 2.6 2.7 3.7 2.9 93 6.9 0.0 5.3 3.5 1.3 2.9 2.1 5.1 5.7 5.6 5.5 0.0 4.8 7.1 6.8 0.0 2.7 2.8 3.7 2.9 9.6 7.2 25 53 3.7 1.2 3.0 23 5.5 6.1 6.0 5.9 0.0 4.8 7.5 72 0.0 2.7 2.7 3.7 2.9 10.0 7.6 6.0 5.3 3.8 12 3.1 25 5.9 6.5 6.3 6.3 0.0 4.8 8.0 7.7 0.0 2.7 2.8 3.7 2.9 10. 51- 8.0 6.7 52 3.8 12 3.2 2.7 6.4 4584 1316 947 0 6861 4235 - 2628 0 6861 6939 -,--7030 - 7114 5976 2209 0 7179 - •3282 3276 3274 3272 '2322 5099 1510 1113 0 7736 = 4724 3015 - 0 "7740 7826- - 7936 8074 -6588 1583 11- 8164 -"-3770 = `3760 3750 3743` 2606 5845 1792 1355 0 8993 .. 5423 ' 3577 0 9012 ' 9109 9208 9329 ----7276 ' 2083 :77- 119 = :9417 :x- 4462 x`.`.4435 4418 4="4401 = 2986 6679 1 - 2120 1641 0 10443 `6216 4228 " 0- 10458 10544 10643 10717 -8007 2659 249 10847 - 5351: `5323 5302 5276 -3475 5.4 5.3 52 0.0 4.8 -`6.8 - 6.5 -0.0 2.6 2.7 3.7 2.9 9.3 6-9 0.0 -53 3.5 -•°`.1-3 ?-2.9 Z1 5.7 5.6 55 0.0 4.8 7:1 6.8 0.0 2.7 - 2-7 ... 3.7 -2.9 .9.6 7 2 2?5 ? 53 -7 -,12 -=3.0 23 6.1 6.0 5.9 0.0 4.8 -: 7.5 ':- 7.2 ; 0.0 2.7 2.7 3-7 2.9 10.0 7.6 6.0 5.3 -='3:8 12 3.1 23 5.9 65 6.3 63 0:0 4.8 -8--0 7-7 0-0 -'2-7 2.8 7-3J - :2.9 10S1 :9.0 6.7 52 ==38 -°:1.2 3:? - 2;7 6:4 4568 1309 941 0 6834 4221 2614 0 6834 6912 7009 7102 5979 1199 0 7165 3283 3279 3276 3273 2323 5101 1510 1113 0 7740 4725 3016 0 7740 7822 7938 8076 6588, 1584 11 8166 3772 3761 3751 3744 2606 5844 1793 1356 0 9014 5433 3584 0 9016 9112 9208 9313 7271 2083 120 9422, 4464 4439 4420 4403 2987 6682 2121 1641 0 10446 6219 4229 0 10457 10545 10641 10720 8007 2659 249 10848 5351 5324 5304 5278 3476 5.4 5.3 5.2 0.0 4.8 6.8 65 0.0 2.6 2.7 3.7 2.9 9.3 6.9 0.0 5.4 3.5 1.3 2.9 2.1 5.1 5.7 5.6 5.5 0.0 4.8 7.1 6.8 0.0 2.7 2.7 3.7 2.9 9.6 7.2 2.6 53 3.7 1.2 3.0 23 5.5 6.1 6.0 5.9 0.0 4.8 7.5 7.2 0.0 2.7 2.7 3.7 2.9 10.0 7.6 6.0 5.3 3.8 1.2 3.1 2S 5.9 6.5 6.3 -6.3 0.0 4.8 8.0 7.7 0.0 2.7 2.8 3.7 2.9 10.5 8.0 6.7 52 3.8 1.2 3.2 2.7 6.4 W:100162.0331ReportlUpper Salem CreeklAppendix.xls A-14 i i ? n 'jap? Water Surface Elevations (Existing Hydraulic Conditions) ? odeu ?ItYeTI levation " 2000 Land tTse ExistinH dlaulic Conditions ax Stage (FTNGVD} 20I0 Land Existing Use - ExistHydraulic Conditions Max Stage (FT.NGVD) a " a.. x ? 2020 Land Use Existinglic Conditions - Max Stage (FI,.NGVD) - ID c` '(FTNGVD) . 10 25 - . s F 50 yr 100 yr 10 yr 25 yr 50 -yr 00- 0 0 : 10{1 SCO05 SCO10 726.6 728.0 742.8 744-2 743.7 745.1 745. 746. 4 747. 6 748.5 6 742. 744.2 8 743.7 745.1 745.4 746.6 747:6 748:5 742.8 744.2 743.7 7452 .745.4 746 6 - 747.6 748 5 SCO15 SC020 SC025 728. 728. 729 1 5 0 744. 745. 745 7 3 9 745. 746.4 746 9 8 747? 747.7 749.1 7495 744.7 745.3 745.8 746.4 747.2 747.7 749.1 7495 744.7 745.3 745.8 746.4 - 7473 747.7 . 749.1 749.5 SC030 . 7295 . 746 0 . 747 748.1 749.8 745.9 746.9 748.1 749.8 745.9 746.9 748.1 749.8 SC035 SC140 729. 730 9 9 . 746. 746 2 3 .0 747.1 748.2 748.3 749.8 749.9 746.0 746.2 747.0 : 747.1 748.2 748.3 749.8 749.9 746.0 746.1 747.0 747.1 748.2 748.3 749.8 749.9 SCO45 . 732 2 . 746 5 747.2 748.3 750.0 746.3 747.2 748.3 750.0 746? 747v2 748.4 750.0 SCO47 . 732 8 . 746 8 747.3 7485 750.1 _ 746.5 747.4 7485 750.1 746.4 747.4 748.5 750.1 SC050 . 733 4 . 747 1 747.6 74 748.7 750.3 746.8 747.6 748.7 750.3 746.8 747.7 748.7 750.3 SC055 . 733 8 . 748 1 7.9 7 748.9 750.4 7477 747.9 748.9 750.4 747.1 747.9 748.9 750.4 SCO60 . 733 9 . 749 4 48.9 750 750.2 751.8 748.1 748.9 750.2 7518 748.1 748.9 750.2 751.8 SCO65 . 735 2 . 750 5 .3 751 4 751.7 753.3 749.4 750.3 751.7 7533 749.3 750.3 751.7 753.3 SC070 SC075 . 736.9 737 0 . 753.7 754 5 . 754.4 755 752.7 755.3 754.2 756.2 7505 753.7 751.4 754.4 752.7 755.3 754.2 756.2 750.4 753.7 751.4 754.4 752.7 755.3 754.2 756.2 SCO80 . 7375 . 754 8 .4 755 8 7565 757.0 754.5 755.4 7565 757.0 754.5 755.4 756.5 757.0 SC085 737 7 . 755 3 . 7 756.8 757.4 754.8 755.8 756.8 757.4 754.8 755.8 756.8 757.4 SC090 . 738 0 . 755 8 56.3 7 6 757.4 758.2 755.3 _ 756.3 757.4 758.2 755.3 756.3 757.4 758.2 SC095 . 738 1 . 755 9 5 .8 7 6 758.0 758.8 755.8 756.8 758.0 758:8 755.7 756.8 758.0 758.8 SC 100 . 738 2 . 756 3 5 .9 757 3 758.1 759.0 755.9 756.9 758.1 759.0 755.8 756.9 758.1 759.0 SC 105 . 738 7 . 756 3 . 7 7 758.6 759.6 .756.3 ' 757.3 7585 759.6 7562 7573 758.6 759.6 SCI 10 . 739 2 . 756 4 .3 5 757 4 758.6 759.6 756.3 7573 758.6 759.6 756.2 757.3 758.6 759.6 SC 115 . 739 5 . 756 4 . 757 4 758.6 759.6 756.4 757.4 758.6 759:6 7563 757.4 758.6 759.6 SC120 . 740 6 . 756 6 . 757 6 758.7 759.7 756.4 757.4 ... 758.7 -759.7 756.4 757.4 758.7 759.7 SC123 . 742 5 . 757 3 . 7 8 758.8 759.8 756.6 757.6 758.8 759.8 756.6 757.6 758.8 759.8 SC 125 . 743 3 . 757 7 5 .2 758 759.3 7603 757.3 758.2 759.3 7603 757.2 7582 759.3 760.3 SC 127 . 744 5 . 758 6 .5 759 759.7 760.9 757.7 758-5 -759.7 760.9 757.6 7585 759.7 760.9 SC130 . 745 1 . 759 3 5 760 760.6 761.8 758.6 759.5 760.6 761.8 758.6 759.5 760.6 761.8 SC135 . 7452 . 760 2 .1 76 761.2 762.4 759.3 760.1 761.2 762.4 759.2 760.1 761.2 762.4 SC 140 SC 145 SC 150 SC 155 SC 160 745.4 745.5 745.7 746.7 747 5 . 760.4 761.8 762.0 762.1 762 4 1.1 761.3 762.9 763.0 763.1 7 762.4 762.6 764.4 764.5 764.6 763.8 764.0 766.0 766.2 766.2 - 760.2 760.4 761.8 762.0 `. .. 762.1 761.1 7613 762.9 763.0 763:1 762.4 762.6 764.4 764-5 764.6 763.8 764.0 -766.0 766.2 .. 766.2 760.2 760.4 761.8 761.9 762.0 761.1 761.3 762.9 763.0 763.1 762.4 762.6 764.4 7645 764.6 763.8 764.0 766.0 766.2 766.2 SC 165 SC 170 SC 175 SC 180 SC185 SC 190 SC 195 SC200 SC205 SC210 SC215 SC220 SC225 SC230 SC235 . 750.8 751.9 754.1 754.8 756.1 756.2 756.5 756.6 756.8 757.2 757.5 757.7 759.0 762.0 762.1 . 763.0 764.6 764.8 765.0 765.0 765.3 765.5 765.8 766.0 766.2 766.4 767.1 768.8 770.4 770.6 633 763.8 7655 765.7 765.9 765.9 766.1 766.2 766.6 766.7 766.8 766.9 767.4 769.2 770.9 771.1 764.7 765.1 766.8 767.0 767.1 767.1 767.3 767.4 767.8 767.9 768.0 768.0 768.2 769.7 771.5 771.7 766.3 766.7 768.3 768.4 768.5 768.6 768.', 768.8 769.2 769.3 769.3 769.4 7695 770.4 - 772.3 772.4 -. - ; 762.4 = 763.0 764.6 764.8 765.0 :' 765.0 - ' : 765.3 .` 765-5 765.8 - .766.0 ,.766.2 -.,.766.4 . ----767.1 -::- '768.8 . 770.4 -"?. 770.6 ' 763.4 - 763.8 = - 765.5 765.7 765.9 . _ :765.9 = 766.1 _ 7662 766.6 766-7-. 766.8 766.9 _ --.- _:767.4 -'7692 `:-' - 7709 - . 7711 764.1 - 765.1 :. 766:8 767.0 . 7671 - 767' ' 7 '_7673 767.4 767.8 -- 7679 768.0 7680 - `7692 7647: '- > =7715 - --=:2711 _ 7663 : - ::';.7683 768A _ ,7685 768.6 7657 768:8 769.2 " 7693 r 769.3 - -7694 7695 770:4 ' "- 7723 '-? '-772:4 762.3 762.9 764.6 764.8 765.0 765.0 765.3 765.4 765.8 766.0 766.2 766.4 767.1 768.8 770.4 770.6 763.4 763.8 765.5 765.7 765.9 765.9 766.1 766.2 766.6 766.7 766.8 766.9 767.4 769.2 770.9 771.1 764.7 765.1 766.8 767.0 767.1 767.1 767.3 767.4 767.8 767.9 768.0 768.0 768.2 769.7 7715 771.7 766.3 766.7 768.3 768.4 7685 768.6 768.7 768.8 769.2 769.3 769.4 769.4 7695 770.411 772.3 772.4 Appendix A-29 HYDRAULIC ANALYSIS SUPPORTING DOCUMENTATION HEC-RAS MODEL PROFILES AND CROSS-SECTIONS 100-YEAR FREQUENCY FLOW Civitprk.rep HEC-RAS September 1998 version 2.2 U.S. Army Corp of Engineers Hydrologic Engineering Center 609 Second Street, Suite D Davis, California 95616-4687 (916) 756-1104 X X XXXXXX XXXX XXXX XX XXXX X X X X X X X X X X X X X X X X X X X XXXX XXX XXXX X XXX XXXX XXXXXX XXXX X X X X X X X X X X X X X X X X X X X X X XXXXXX XXXX X X X X XXXXX PROJECT DATA Project Title: Civitan Park Floodplain Study Project File : Civitprk.prj Run Date and Time: 06/18/2001 5:01:09 PM Project in English units PLAN DATA Plan Title: Civitan Park - Exist. Cond. 100 year Plan File : C:\temp\HEC\RAS\Civitprk.p02 Geometry Title: Civitexist100 Geometry File : C:\temp\HEC\RAS\Civitprk.g02 Flow Title : CivitaNEXIST100 Flow File : C:\temp\HEC\RAS\Civitprk.f03 Plan Summary Information: Number of: Cross Sections = 8 Mulitple Openings = 0 Culverts = 0 Inline Weirs = 0 Bridges = 0 Computational Information Water surface calculation tolerance = 0.01 Critical depth calculaton tolerance = 0.01 Maximum number of interations = 20 Maximum difference tolerance = 0.3 Flow tolerance factor = 0.001 Computation Options critical depth computed at all cross sections Conveyance Calculation Method: At breaks in n values only Friction Slope Method: Average Conveyance Computational Flow Regime: Subcritical Flow FLOW DATA Flow Title: CivitaNEXIST100 Flow File : C:\temp\HEC\RAS\Civitprk.f03 Flow Data (cfs) River Reach RS 100 - year Salem Creek Civitan park 8 10772 Boundary Conditions Page 1 Civitprk.rep River Reach Profile Upstream Downstream Salem Creek Civitan park 100 - year Normal S = .003 Known WS = 766.2 GEOMETRY DATA Geometry Title: Civitexist100 Geometry File : C:\temp\HEC\RAS\Civitprk.g02 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 8 INPUT Description: Cross Se ction 8 @ Surveyed Sect 2 Station Elevation Dat a num= 31 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 775 33 765 55 760 63 759 85 758 95 758 138 759 190 759 203 760 224 760 260 760 284 760.2 287 754 289 750 297 749 316 750 320 750.5 321 752 327 752.7 334 755.7 339 756 351 756.7 357 760 362 763 366 765 370 766 392 766 435 766 440 767 450 770 465 775 Manning's n Values num 5 Sta n Val Sta n Val Sta n Val Sta n Val Sta n Val 0 10 190 .07 284 .055 366 .07 435 10 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 284 366 80 95 115 .3 .5 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 767.74 Element Left OB Channel Right OB Vel Head (ft) 0.61 Wt. n-Val. 0.201 0.055 0.072 W.S. Elev (ft) 767.13 Reach Len. (ft) 80.00 95.00 115.00 Crit W.S. (ft) 762.36 Flow Area (sq ft) 1919.54 1078.01 83.10 E.G. Slope (ft/ft) 0.002737 Area (sq ft) 1919.54 1078.01 83.10 Q Total (cfs) 10772.00 Flow (cfs) 2821.23 7852.98 97.79 Top Width (ft). 414.46 Top Width (ft) 258.03 82.00 74.43 Vel Total (ft/s) 3.50 Avg. Vel. (ft/s) 1.47 7.28 1.18 Max Chl Dpth (ft) 18.13 Hydr. Depth (ft) 7.44 13.15 1.12 Conv. Total (cfs) 205919.1 Conv. (cfs) 53931.0 150118.7 1869.3 Length Wtd. (ft) 88.93 Wetted Per. (ft) 259.04 92.12 74.67 Min Ch E1 (ft) 749.00 Shear (lb/sq ft) 1.27 2.00 0.19 Alpha 3.21 Stream Power (lb/ft s) 1.86 14.56 0.22 Frctn Loss (ft) 0.11 Cum Volume (acre-ft) 250.30 45.15 36.88 C & E Loss (ft) 0.24 Cum SA (acres) 37.42 2.74 7.39 Warning: The conveyance r atio (upst ream conveyance divided by downstream conveyance) is less than 0.7 or grea ter than 1 .4. This may indicate the need for additional cross sections. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 7 INPUT Description: Cross Sectio n 7 @ Surveyed Sect 3 Station Elevation Data num= 34 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 775 33 765 54 760 62 759 120 758 190 758 265 759 274 760 287 760 310 759.2 360 760 380 760.4 395 760 405 755 412 750.2 422 752 425 752 430 751 433 750 439 748 446 746.5 450 749 454 753 456 755 458 760 461 765 462 767 477 765 540 764 570 764 570 767 600 770 660 778 760 780 Manning's n Values num= 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 .07 380 .055 461 .07 600 10 Page 2 Civitprk.rep Bank Sta: Left Right Lengths: L eft Channel Right Coeff Contr. Expan. 380 461 340 420 340 .2 .4 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 767.39 Element Left OB Channel Right OB Vel Head (ft) 0.13 Wt. n-Val. 0.070 0.055 0.070 W.S. Elev (ft) 767.26 Reach Len. (ft) 340.00 420.00 340.00 Crit W.S. (ft) 761.30 Flow Area (sq ft) 2848.50 1095.65 292.23 E.G. Slope (ft/ft) 0.000705 Area (sq ft) 2848.50 1095.65 292.23 0 Total (cfs) 10772.00 Flow (cfs) 6427.25 4039.84 304.91 Top Width (ft) 547.06 Top Width (ft) 354.46 81.00 111.60 Vel Total (ft/s) 2.54 Avg. Vel. (ft/s) 2.26 3.69 1.04 Max Chl Dpth (ft) 20.76 Hydr. Depth (ft) 8.04 13.53 2.62 Conv. Total (cfs) 405761.6 Conv. (cfs) 242102.9 152173.5 11485.2 Length Wtd. (ft) 363.91 Wetted Per. (ft) 355.54 94.00 115.99 Min Ch E1 (ft) 746.50 Shear (lb/sq ft) 0.35 0.51 0.11 Alpha 1.26 Stream Power (lb/ft s) 0.80 1.89 0.12 Frctn Loss (ft) 0.13 Cum Volume (acre-ft) 245.92 42.78 36.39 C & E Loss (ft) 0.04 Cum SA (acres) 36.86 2.56 7.14 Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 6 INPUT Description: Cross Section 6 @ Surveyed Sect 7 Station Elevation Data num= 35 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 790 40 770 50 768 55 764 100 762, 300 760 400 759.7 550 760 610 759 690 758 700 757 760 757 790 758 805 759 835 759 855 758 925 759 940 759.2 945 759 955 757 967 756.8 974 753 980 750 982 749 990 748 1000 746.8 1009 748 1017 750 1027 760 1030 762 1038 765 1250 766 1340 768 1350 770 1380 780 Manning's n Values num= 3 Sta n Val Sta n Val Sta n Val 0 .07 967 .055 1027 .07 Bank Sta: Left Right Lengths: Left Channel Right Coef f Contr. Expan. 967 1027 380 390 400 .1 .3 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 767.22 Element Left OB Channel Right OB Vel Head (ft) 0.04 Wt. n-Val. 0.070 0.055 0.070 W.S. Elev (ft) 767.19 Reach Len. (ft) 380.00 390.00 400.00 Crit W.S. (ft) 760.93 Flow Area (sq ft) 6957.33 1008.40 437.78 E.G. Slope (ft/ft) 0.000207 Area (sq ft) 6957.33 1008.40 437.78 0 Total (cfs) 10772.00 Flow (cfs) 8192.52 2398.55 180.93 Top Width (ft) 1252.46 Top Width (ft) 915.99 60.00 276.48 Vel Total (ft/s) 1.28 Avg. Vel. (ft/s) 1.18 2.38 0.41 Max Chl Dpth (ft) 20.39 Hydr. Depth (ft) 7.60 16.81 1.58 Conv. Total (cfs) 749502.5 Conv. (cfs) 5 70025.4 166888.0 12589.2 Length Wtd. (ft) 382.58 Wetted Per. (ft) 917.51 66.51 277.64 Min Ch E1 (ft) 746.80 Shear (lb/sq ft) 0.10 0.20 0.02 Alpha 1.41 Stream Power (lb/ft s) 0.12 0.47 0.01 Frctn Loss (ft) 0.08 Cum Volume (acre-ft) 207.65 32.64 33.54 C & E Loss (ft) 0.00 Cum SA (acres) 31.90 1.88 5.63 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 5 INPUT Description: Cross Section 5 @ Surveyed Sect 8 Station Elevation Data num- 26 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev Page 3 Civitprk.rep 0 774 30 768 50 766 100 765.5 220 764 320 762 570 762 710 760 750 758 800 757.2 950 757.2 1100 758 1170 758 1191 759.8 1195 756 1200 750 1202 748 1210 747 1215 746.3 1234 748 1239 753 1245 758 1250 763.5 1260 764 1380 764 1381 774 Manning's n Values num= 3 Sta n Val Sta n Val Sta n Val 0 /07 1191 .055 1250 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1191 1250 420 410 400 .1 .3 CROSS SECTION OUTPUT Profile #100 - year E.G.'Elev (ft) 767.14 Element Left OB Channel Right OB Vel Head (ft) 0.03 Wt. n-Val. 0.070 0.055 0.070 W.S. Elev (ft) 767.11 Reach Len. (ft) 420.00 410.00 400.00 Crit W.S. (ft) 759.99 Flow Area (sq ft) 7421.65 966.41 406.99 E.G. Slope (ft/ft) 0.000228 Area (sq ft) 7421.65 966.41 406.99 Q Total (cfs) 10772.00 Flow (cfs) 8240.68 2256.35 274.97 Top Width (ft) 1341.39 Top Width (ft) 1152.08 59.00 130.31 Vel Total (ft/s) 1.22 Avg. Vel. (ft/s) 1.11 2.33 0.6B Max Chl Dpth (ft) 20.81 Hydr. Depth (ft) 6.44 16.38 3.12 Conv. Total (cfs) 712881.1 Conv. (cfs) 545360.7 149323.3 18197.1 Length Wtd. (ft) 414.68 Wetted Per. (ft) 1152.31 70.66 133.14 Min Ch E1 (ft) 746.30 Shear (lb/sq ft) 0.09 0.19 0.04 Alpha 1.40 Stream Power (lb/ft s) 0.10 0.46 0.03 Frctn Loss (ft) 0.09 Cum volume (acre-ft) 144.94 23.80 29.66 C & E Loss (ft) 0.00 Cum SA (acres) 22.88 1.35 3.76 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 4 INPUT Description: Cross Section 4 @ Surveyed sect 12 Station Elevation Data num= 40 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 772 40 768 80 766 100 764 140 764 400 762.8 500 764 600 762 660 760 690 759 735 758 760 757 765 756 770 755 780 755 850 756 900 757 915 758 928 757 941 757.2 943 751 950 747 958 744.3 963 744.3 971 745 978 745.3 982 747 985 753.5 997 757 1052 757 1100 756.6 1145 756 1165 757 1185 75B 1200 759 1210 761 1220 762 1230 764 1245 766 1300 770 Manning's n Values num= 3 Sta n Val Sta n Val Sta n Val 0 .07 941 .055 997 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 941 997 210 170 140 .1 .3 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 767.05 Element Left OB Channel Right OB Vel Head (ft) 0.04 Wt. n-Val. 0.070 0.055 0.070 W.S. Elev (ft) 767.01 Reach Len. (ft) 210.00 170.00 140.00 Crit W.S. (ft) 759.04 Flow Area (sq ft) 5030.70 1042.82 2251.96 E.G. Slope (ft/ft) 0.000226 Area (sq ft) 5030.70 1042.82 2251.96 Q Total (cfs) 10772.00 Flow (cfs) 5124.25 2637.59 3010.16 Top Width (ft) 1198.94 Top Width (ft) 881.11 56.00 261.83 Vel Total (ft/s) 1.29 Avg. Vel. (ft/s) 1.02 2.53 1.34 Max Chl Dpth (ft) 22.71 Hydr. Depth (ft) 5.71 18.62 8.60 Conv. Total (cfs) 716831.6 Conv. (cfs) 340997.7 175520.3 200313.6 Length Wtd. (ft) 179.01 Wetted Per. (ft) 881.64 67.06 262.53 Min Ch E1 (ft) 744.30 Shear (lb/sq ft) 0.08 0.22 0.12 Alpha 1.53 Stream Power (lb/ft s) 0.08 0.55 0.16 Frctn Loss (ft) 0.04 Cum Volume (acre-ft) 84.90 14.34 17.45 C & E Loss (ft) 0.00 Cum SA (acres) 13.08 0.81 1.96 Page 4 Civitprk.rep CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 3 INPUT Description: Cross Section 3 @ Surve yed sect 13 Station Elevation Data num= 33 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 772 30 768 45 764 65 762 80 760 120 758 150 758 180 760 300 760 400 763 520 762 830 760 850 761 880 760 900 757 960 756 1010 756 1012 755.8 1022 750 1030 746 1032 744.7 1037 745 1044 746 1050 747 1053 750 1058 754 1068 754 1088 757 1200 756 1290 756 1310 760 1370 766 1450 770 Manning's n Values num= 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 10 400 .07 1012 .055 1088 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1012 1088 165 160 155 .1 .3 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 767.00 Element Left OB Channel Right OB Vel Head (ft) 0.04 Wt. n-Val. 0.110 0.055 0.070 W.S. Elev (ft) 766.97 Reach Len. (ft) 165.00 160.00 155.00 Crit W.S. (ft) 758.82 Flow Area (sq ft) 6474.16 1208.73 2586.77 E.G. Slope (ft/ft) 0.000215 Area (sq ft) 6474.16 1208.73 2586.77 Q Total (cfs) 10772.00 Flow (cfs) 4516.27 .2883.00 3372.73 Top Width (ft) 1355.52 Top width (ft) 978.14 76.00 301.39 Vel Total (ft/s) 1.05 Avg. Vel. (ft/s) 0.70 2.39 1.30 Max Chl Dpth (ft) 22.27 Hydr. Depth (ft) 6.62 15.90 8.58 Conv. Total (cfs) 734001.2 Conv. (cfs) 307737.5 196446.5 229817.1 Length Wtd. (ft) 161.14 Wetted Per. (ft) 979.21 81.92 302.11 Min Ch E1 (ft) 744.70 Shear (lb/sq ft) 0.09 0.20 0.12 Alpha 2.05 Stream Power (lb/ft s) 0.06 0.47 0.15 Frctn Loss (ft) 0.04 Cum Volume (acre-ft) 57.17 9.95 9.67 C & E Loss (ft) 0.00 Cum SA (acres) 8.60 0.55 1.05 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 2 INPUT Description: Cross Section 2 Surveyed Sect. 15 Station Elevation Data num- 27 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 770 20 768 110 765 190 762 420 762.8 660 762 900 760 1030 757 1060 756 1080 755 1137 755 1176 756 1200 757 1210 750 1216 746 1231 746.7 1238 746.1 1244 747 1246 748 1249 749 1250 750 1255 755 1308 755 1325 757 1340 760 1345 765 1370 770 Manning's n Values num= 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 10 900 .07 1200 .055 1250 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1200 1250 280 300 240 .2 .4 CROSS SECTION OUTPUT Profile #10 0 - year E.G. Elev (ft) 766.96 Element Left OB Channel Right OB Vel Head (ft) 0.07 Wt. n-Val. 0.122 0.055 0.070 W.S. Elev (ft) 766.89 Reach Len. (ft) 280.00 300.00 240.00 Crit W.S. (ft) 758.75 Flow Area (sq ft) 6847.68 932.04 1043.75 E.G. Slope (ft/ft) 0.000364 Area (sq ft) 6847.68 932.04 1043.75 Q Total (cfs) 10772.00 Flow (cfs) 5671.75 3195.84 1904.41 Top Width (ft) 1301.07 Top Width (ft) 1146.63 50.00 104.44 Vel Total (ft/s) 1.22 Avg. Vel. (ft/s) 0.83 3.43 1.82 Max Chl Dpth (ft) 20.89 Hydr. Depth (ft) 5.97 18.64 9.99 Page 5 Civitprk.rep Conv. Total (cfs) 564494.1 Conv. (cfs) 297221.4 1 67474.2 99798.6 I Length Wtd. (ft) 284.40 Wetted Per. (ft) 1146.84 54.34 109.18 ! Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.14 0.39 0.22 ( Alpha 2.98 Stream Power (lb/ft s) 0.11 1.34 0.40 Frctn Loss (ft) 0.19 Cum Volume (acre-ft) 31.94 6.01 3.21 C & E Loss (ft) 0.08 Cum SA (acres) 4.58 0.32 0.33 I Warning: The conveyance ratio (upstr eam conveyance divided by downstream conveyance) is less than 0.7 or greater than 1. 4. This may indicate the need for addi tional cross sections. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 1 INPUT Description: XSec 1 0 surveyed sect 16 Station Elevation Data num= 20 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 768 26 756 28 755 124 755 182 754 200 754 270 754.5 272 754 275 752.3 281 752.3 286 750 291 747.2 296 747 307 746 314 745.5 318 746 322 747 324 750 339 766 350 768 Manning's n Values num= 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 10 200 .07 281 .055 324 .07 Bank Sta: Left Right Lengths: L eft Channel Right Coeff Contr. Expan. 281 324 0 0 0 .3 .5 CROSS SECTION OUTPUT Profile #100 - year E.G. Elev (ft) 766.68 Element Left OB Channel Right OB Vel Head (ft) 0.48 Wt. n-Val. 0.205 0.055 0.070 W.S. Elev (ft) 766.20 Reach Len. (ft) Crit W.S. (ft) 758.65 Flow Area (sq ft) 3090.46 814.60 123.11 E.G. Slope (ft/ft) 0.001608 Area (sq ft) 3090.46 814.60 123.11 Q Total (cfs) 10772.00 Flow (cfs) 4460.90 5990.87 320.22 Top Width (ft) 336.20 Top Width (ft) 277.10 43.00 16.10 Vel Total (ft/s) 2.67 Avg. Vel. (ft/s) 1.44 7.35 2.60 Max Chl Dpth (ft) 20.70 Hydr. Depth (ft) 11.15 18.94 7.65 Conv. Total (cfs) 268610.3 Conv. (cfs) 111237.0 149388.3 7985.0 Length Wtd. (ft) Wetted Per. (ft) 280.10 46.06 23.05 Min Ch El (ft) 745.50 Shear (lb/sq ft) 1.11 1.78 0.54 Alpha 4.36 Stream Power (lb/ft s) 1.60 13.06 1.39 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) SUMMARY OF MANNING'S N VALUES River:Salem Creek Reach River Sta. nl n2 n3 n4 n5 Civitan park 8 10 .07 .055 .07 10 Civitan park 7 .07 .055 .07 10 Civitan park 6 .07 .055 .07 Civitan park 5 .07 .055 .07 Civitan park 4 .07 .055 .07 Civitan park 3 10 .07 .055 .07 Civitan park 2 10 .07 .055 .07 Civitan park 1 10 .07 .055 .07 SUMMARY OF REACH LENGTHS River: Salem Creek Reach River Sta. Left Channel Right Page 6 I Civitprk.rep Civitan park 8 80 95 115 Civitan park 7 340 420 340 Civitan park 6 380 390 400 Civitan park 5 420 410 400 Civitan park 4 210 170 140 Civitan park 3 165 160 155 Civitan park 2 280 300 240 Civitan park 1 0 0 0 SUMMARY OF CONTRACTION AND EXPANSION COEFFICIENTS River: Salem Creek Reach River Sta. Contr. Expan. Civitan park 8 .3 .5 Civitan park 7 .2 .4 Civitan park 6 .1 .3 Civitan park 5 .1 .3 Civitan park 4 .1 .3 Civitan park 3 .1 .3 Civitan park 2 .2 .4 Civitan park 1 .3 .5 ERRORS WARNINGS AND NOTES Errors Warnings and Notes for Plan : Civexist100 River: Salem Creek Reach: Civitan park RS: 8 Profile: 100 - year Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 7 Profile: 100 - year Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 2 Profile: 100 - year Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. Page 7 HEC-RAS Plan: Civexist100 River: Salem Creek Reach: Civitan park i3ea?h -, R?rer:St <Ir?,? '. rl-..?. • r ,+ otal s_. .Si•''3"'r! .s,, . ' . Mrr1,Ch'`EI W.S` Efev 'r'Y:` nYW_S 4i' >Elev EG°:S ape Y 'G .4'_'3T' ^I+r P,'tl \r ft i T "` Vel Ghnf-i } ?? n ftls ,<G 3 i 3'Flow Areas: ~: o Width' T", , de' _ •Y._'C ?i ti.i - Y`.i s r?." ft tt x r x r ; ark \ 8 Civrta 10772 00 749.00 767.13 762.36 0.002737 767.74 7.20 ' 3080.65 414.46 0.35 , ? p . Givitan park 10772 00 746.50 767.26 761.30 767.39 0.000705 3.6?J 4236.37 547.06 0.18 . ' t r lvita n park 3f 10772.00 746.80 767.19 760.93 767.22 0.000207 2.38 8403.51 1252.46 0.10 ? v ivitan pa?k5y{ it an a"rk4` i 3 P rcV 10772.00 10772.00 746.30 744.30 767.11 767.01 759.99 759.04 767.14 767.05 0.000228 0.000226 2.33 2.53 8795.04 8325.48 1341.39 1198.94 0.10 0.10 6vrtan- 10772.00 744.70 766.97 758.82 767.00 0.000215 2.39 10269.66 1355.52 0.11 CiVrtarL?7arfc 10772.00 746.00 766.89 758.75 766.96 0.000364 3.43 8823.47 1301.07 0.14 1a { '' Civrta pa! 10772.00 745.50 766.20 758.65 766.68 0.001608 7.35 4028.17 336.20 0.30 . HEC-RAS Plan: Civexist100 River: Salem Creek Reach: Civitan park r R VetC y ePtb G^ :. WWFM ?I- ft) I k 8 fi', 10772 00 w t 749 00 767.13 767.74 7.28 2.00 13.15 0.002737 0.35 14.56 x . r an pa . a ivitan Pa(k 7" z 10772.00 746.50 767.26 767.39 3.69 0.51 13.53 0.000705 0.18 1.89 ivitan park 610772.00 746.80 767.19 767.22 2.38 0.20 16.81 0.000207 0.10 0.47 10772.00 746.30 767.11 767.14 2.33 0.19 16.38 0.000228 0.10 0.46 L. :ivrta park q`k 10772.00 744.30 767.01 767.05 2.53 0.22 18.62 0.000226 0.10 0.55 ivita'a(k ?3;F 3g 10772.00 744.70 766.97 767.00 2.39 0.20 15.90 0.000215 0.11 0.47 :ivrtan park 2 10772.00 746.00 766.89 766.96 3.43 0.39 18.64 0.000364 0.14 1.34 ;ivitart park ^ 't 1 10772.00 745.50 766.20 766.68 7.35 1.78 18.94 0.001608 0.30 13.06 HEC-RAS Plan: Civexist100 River: Salem Creek Reach: Civitan park Civet Givif Ra ch ? K ? C'??E?ev ?. el tl t Lyoss?? C &< ? ?. a °o u te park'3 767.74 767.13 0.61 0.11 0.24 2821.23 7852.98 97.79 414.46 P? n park 47 767.39 767.26 0.13 0.13 0.04 6427.25 4039.84 304.91 547.06 yt Ottrk 767.22 767.19 0.04 0.08 0.00 8192.52 2398.55 180.93 1252.46 ? ?n past `? t,z 767.14 767.11 0.03 0.09 0.00 8240.68 2256.35 274.97 1341.39 paYk5 767.05 767.01 0.04 0.04 0.00 5124.25 2637.59 3010.16 1198.94 767.00 766.97 0.04 0.04 0.00 4516.27 2883.00 3372.73 1355.52 gin: arkZ :'r 766.96 766.89 0.07 0.19 0.08 5671.75 3195.84 1904.41 1301.07 an 'Pa rk 1 766.68 766.20 0.48 4460.90 5990.87 320.22 336.20 a a Civitan Park - Exist. Cond. 100 year 06/1812001 Civitan park Legend --------- ------------ ------ ---------- --------- --------- --------- ---------- ------------------- :--• -----• -.---- - ---------?---------•-------•-•- --=-- --?- - ? WS 100 -year G d 770 -------------------- --------- -------------------- --------------------- --------- --------------------- ------ --------- ---------- --- roun --------- --------- - --------- ------------------------- --------- -------------------- --------- --------- --------- ----------- --------- 765 --------- --------- --------- --------- ------- --------- --------- 760 0 •-•• ---- ••--• -••--• -•-••-• ------• 755 w --------- ---------- ----------------------------- --------- ---------- ----------------------------- --------- --------- --------- 750 - - --------- -------- ------ --------- --------- ---------- ----------------------------- --------- ---------- --------- --------- --------- --------- ---------- --------- --------- ------------- ---------- --------- --------- ------ --------- ------------------- --------- ---------- ------ --------------------------------------- --- ---- ---- ------------------------------------ -- ------- ------ ------------- -- ---------- --------- --------- --------- --------- --------- --------- 745 - ---------- -------- ------ --------- --------- ----------------- --------- --------- --------------------------------------- --------- ---------- ------------------- ------ --------- ---------- --------- ------- --------- --------- ---------- --------- --------- --------- --------- -------- ---- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- ------------------- 740 0 500 1000 1500 2000 Main Channel Distance (ft) 1 in Honz. = zau n i in ven. = 6 n Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park XSec 1 @, surveyed sect 16 RS =1 .07 ?k 055 - .07 -? 10 . Legend 770- ........... }.._--_-•_}-----__--}_-____---}.._---••- -•---._--}______--_}______---F--___----}--------- ---------}___---_--}.____-__-F-______-_}-_____--_ -------- ........... }---------- --------- }--------- ---------- __--___-_}. WS 100 - year ¦ -------- -------------------- ----------- -------- ---- ------ ---- .---- ................... ----- --------- ------ ------ -------- Ground Bank Sta 765 ------ --------- --------- - ---------- --------- --------- --------- --------- ------------------ - -------- --------- --------- ---------- --------- --------- -- ---------- --------- --------- -------- ; . 760 ----- ......... .........}___ r } } ...... ------ ----}......... } ......... } ......... ... .........f......... ....... } ..}_ ..}......... }_._..__._}--------- .......... . .- }-____-..-}. ? . i fp --------- ---------- --------- --------- --------- --------- ._____..} .... .... ---------- __-.-... _}. _._-. ..... ------ --- w ......... .......... _ __..__. ...... 755 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . r - - - - - - - - - - - - - - - - - - ................"'' ' ---- _ -• ------- . - - - - - - - - - - - - - - - - - - - - - - ------ 750 ----- -•-- ---- •-"•- ----- •--•- --------- . r _ ------- ----- --------- --------------------- -__ . ..... . 745 1 0 00 2 00 3 00 4 00 Station (ft) 1 in Horiz. = 50 tt 1 in Vert. = D rL Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 2 Surveyed Sect 15 RS = 2 .07---) 10 . Legend 770 ; r l r ;;;;? 1 . 1 1, 1 1 r r l r r ' ' ! WS 100 -year t •___.}----- {----- '. __•__?_••__{ ..... _ .................... ' ------ ..........}..._.;...._ _... __ _..{._... ;-_._.- ... _....}_..__}_.... ...._._f.....}...--;_.... i_ ...-f-___.{...... ............. }...__}_....;•-•-- i__. Ground I { k r r I r Sta Ban 765 I I r I r I r I r ? I r I I r I I I ' ' r r r r r I r r r r r r r r r I , I I r r r r r I r r , , r I I r I I I ? I , I r . I I I I r I r r I I r ; r r .__ .. ____ .. r I r _ _ __ ....................... I r I - - - - - - - - - - - - - - - , 760- F . r r I r r . r r r r r I r r I ; I r r r r i r I ; ; ; ; r r ; I I I r I I ; `? • i r , r r r I r r . r r r ; ; ._ I I r ? r I r . I I I .... r I r I I I , r I U1 r r I r r r r r r r I I I •_ _.. r r I r ' _•_ _ --_. .. __ 755 r r I r r r r r l r r I ? I I r I I r I I I r ; ; r r r r r I r r I I I r r . , ; I r , I I r ; I r I I I __ ___ _____ ; ; ----- _. , I r r ; r I I I r I r r I I I r r r r ; , , , r r ' ' , r . r r I r r --------------------- ___ _. I r I r I r r I I I r r r I r r I r r I I r r I r I r I I r r I r r r I . I _ --- __-- ---- 750 I r r r r r ; I I I r r I r - . --- I I I . I I I I r r I . r r r r ' ? ? r I I I r r ? r I I I r I ; ; ; ; , r I I r I I r I I r r ; ; ' I I r r r r I r r r r r r r r r I ------ , I , r r I I r I -------- ----- ------ ------ ------- r _ -- _ -- ' 745 0 500 1000 1500 Station (ft) 1 In lion. = zuu iI 1 in ven. = o u Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 3 @ Surveyed sect 13 RS = 3 10. .07 .05571t -.07 -? egen 775 i , : : i WS 100 -year ------ ----- -•--- i i Gr. - - ---•- ----•---•-,----•-•-----•--•--,----- ------ I ------ ----- •-----,------•-----•---------••-• ........ -- •-- --,-- Bank Sta 770 ------ --------------------------------- 765 ------ ----- ------ ------- - .. - -- - - -- ---- --- - - - -- ------ ------ 0 760 ? ? i i w --------------- -------------- --- --- - - - - ------------------ ------ -------------------- ----- ------------- ----- -- 755 750 - ------------------ ------ ------ ------ ------ ------ ----- -- -- -------------------------------------------------------- ------------------------------- 745 0 500 1000 1500 Station (ft) 1 In Horiz. = zoo n 1 in ven. = o Ti Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 4 @ Surveyed sect 12 RS = 4 07 4-055 .07-? 775 --------------------- ---- ----------- - 770 765 ----------------------- - ------------ ? 760 755 ZL ----- - ----- ------------------------ ----------- = 200 1 In Vert. = Station (ft) Legend -------------------------- WS 100 - year - •- ---- -- -- ---- ........................ Ground • ----- ------- ------ ---- ----------------- i • Bank Sta Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 5 @ Surveyed Sect 8 RS = 5 .07 *055?-, 07 -? egen -- - -- --- •. ----- WS 1 year ..... -- ---- --- --- - - -- • --- - --- •-- -• --- ------....................... . ---- Gr nd 775 Bank Sta •------ .. ------ °. ...................................... ........................ . ........................ -- - ------ ----------------------- 770 ------------- 765 - ------------------- v .•--•--•••.----•-•--••- ..••-•- •..----•-.......... . .. -----_-_-------- I, . -- ------------------ ------ 7 __ - W 760 --- - - ------------------------------ ------------------------------ ----- 755 ------------ ------------ -------------- 750 ---------- ----- -- ----------------- 745 1500 0 500 1000 Station (ft) 7 in Pori. =1uu n i in ven. = 6 n Civitan Park- Exist. Cond. 1 00 year 06118/2001 River = Salem Creek Reach = Civitan park Cr oss Section 6 @ Surveyed Sect 7 RS = 6 0 7 05 5 .0 n?e- -- • •--- ----- ------•-----•-----•----- - - - • - ...... --- - - - ..... - egen ------ ; ' - - ----- .............. ---- . : - • --- -- --- - --. •- - - - -- ; ---- -- - ----- - S 100 year •••-- •- ---- ----- ---- - -- ; Ground 775 i i ------ ------------ ------ ----- ---- ------ ------ ------ ----- ------ ------ ----------- ----- ------ ----------- ------ ------------ ----- i Bank Sta ' -- . ----- ----- ------------ ----------- ----- 770 765 ------- ----------------------------------- ----- ------------------ -------- ----- --- - - ------------ ------ ----- ----- ------------ . --• ---- 0 w ; d w 760 ------------------------------ ------ ----- ----------- ---------- ------ ---- ------ ---------- ------ - ---------- --- - ---- ---------------------- -------------- ------------- ------------------ -------------- -- --- ----- ------ 755 ---------- ------ ----- ------------------------ ------ ----- ----- ------------------ ------ ----------- ------ ------------------ --- -- -- ------ ------ ----- ------ ------ ----- ------ --------- -------- ------- ----- ------------ 750 500 1000 1500 Station (ft) 1 In Horiz. = 200 ft 1 in Vert. = o rt Civitan Park- Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 7 @ Surveyed Sect 3 RS = 7 07 -{- 055 - .07 10. - . Legend - WS 100 -year ---?----•---- --•----- ---------+-°-----•;----------•-•------,--------- ---------:---------;---°----+---------+------•-- ------- ---- ------ ----------------------------------- ? Ground ------ --------- -------- Bank Sta 775 - - - ---------------------------------------------- ----;-----•--- ------- ---- -------- -- ---- .---- ................... ---- ------ ---- •--... ---•- ---- ---- -•-- ••-•- ---- ------- ------- 770 - ; ---- ;-----•---+-•---•---,-------•- --------- -------------•--•--+•--- ------------- +--•----•-; ---- ----- ; - ----•- -- ------------------ --------- ---------; --------- ?- ----- -------- 765 --------- c ; .. ----- ---•- ----------- ; I ---- ; .. - -• -------------------------- •--• ------ ------------------------------------------ ---- ----- 760 ---- ---------4------------------- -------------------- ------------------- + -•-------;----------------- ---------;--- •--- ; ;• .--- ---- ------- ..... 755 -------- -------- -------- ---- ---- •-•- --•- ------ ;.. -------------------------------------------------- --------- -------- ------------------ 750 -- --------- -------- --------- --------- ------- - '----.....'----••• - ...... --------- -- . -•' ------- ......... --- ------ - I 0 200 400 66o 800 Station (ft) 1 In Hor¢. = 1 uu it i in von. = u it Civitan Park - Exist. Cond. 100 year 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 8 @ Surveyed Sect 2 RS = 8 10. 3-1 .07 ?1< .055 - -- 7. ? 10.? Legend -••----- ............. -----•--• ......................... •WS 100 year ---•---- -••-••......•--• ...................... ------------------------------------------ ------------------------------ --------------------------------------- ........... ' .......... .......... .......... ........... . . . . 775 Ground i Bank Sta -------------------•-------- -•------- ------ •--------------------------- ----- -------------- ------ ................... --------- --------------------- 770 -- ---------- -------------------------------------------------- --------------------- ----- ---------------- -- ----------------------- -------------------------------------------------- - --------- -------------------------- 765 -------- ---------•---------•--•-•----• -------- --------------------- ........................... ............................. -•--•-- ----- -- ................ 0 --- ---•- --- - --•- ..•• ----° ----- •••-- •--•- •••• --•- w 760 --- --------- -- --------- ------- 755 --------- --- ------- 750 ---- --------- 745 400 600 800 0 200 Station (ft) i in nonz. =, uu n i m VCR. = 0 R 4d I HYDRAULIC ANALYSIS SUPPORTING DOCUMENTATION HEC-RAS MODEL FLOWS BETWEEN I AND 2-YEAR CIVITBnk.rep HEC-RAS September 1998 Version 2.2 O.S. Army Corp of Engineers Hydrologic Engineering Center 609 Second Street, Suite D Davis, California 95616-4687 (916) 756-1104 X X XXXXXX XXXX X X X X X X X X X XXXX XXX XXXX X X X X X X X X X X X X XXXXXX XXXX XXXX XX XXXX X X X X X X X X X X XXX XXXX XXXXXX X)= X X X X X X X X X X X X X X XXXXX PROJECT DATA Project Title: Civitan Park Bankfull Study Project File : CIVITBnk.prj Run Date and Time: 06/18/2001 5:09:17 PM Project in English units PLAN DATA Plan Title: Civitan Park - Exist. Cond. Bankfull Plan File : C:\temp\HEC\RAS\CIVITBnk.p02 Geometry Title: Civitexistbnk Geometry File : C:\temp\HEC\RAS\CIVITBnk.g02 Flow Title : CivitaNEXISTbnk Flow File : C:\temp\HEC\RAS\CIVITBnk.f03 Plan Summary Information: Number of: Cross Sections = 8 Mulitple Openings = 0 Culverts = 0 Inline weirs 0 Bridges 0 Computational Information Water surface calculation tolerance = 0.01 Critical depth calculaton tolerance = 0.01 Maximum number of interations = 20 Maximum difference tolerance = 0.3 Flow tolerance factor = 0.001 Computation Options Critical depth computed at all cross sections Conveyance Calculation Method: At breaks in n values only Friction Slope Method: Average Conveyance Computational Flow Regime: Subcritical Flow FLOW DATA Flow Title: CivitaNEXISTbnk Flow File : C:\temp\HEC\RAS\CIVITBnk.f03 Flow Data (cfs) River Reach RS bankfull PF 2 Salem Creek Civitan park 8 800 1350 PF 3 PF 4 PF 5 1800 2150 3000 Page 1 Boundary Conditions River Reach Profile Salem Creek Civitan park bankfull Salem Creek Civitan park PF 2 Salem Creek Civitan park PF 3 Salem Creek Civitan park PF 4 Salem Creek Civitan park PF 5 GEOMETRY DATA Geometry Title: Civitexistbnk Geometry File : C:\temp\HEC\RAS\CIVITBnk.g02 Upstream Normal S - .003 Normal S - .003 Normal S - .003 Normal S - .003 Normal S -.003 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 8 INPUT Description: Cross Section 8 @ Surveyed Sect 2 Station Elevation Data num 31 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 775 33 765 55 760 63. 759 85 758 95 758 138 759 190 759 203 760 224 760 260 760 284 760.2 287 754 289 750 297 749 316 750 320 750.5 321 752 327 752.7 334 755.7 339 756 351 756.7 357 760 362 763 366 765 370 766 392 766 435 766 440 767 450 770 465 775 Manning's n Values num= 5 Sta n Val Sta n Val Sta n Val Sta n Val Sta n Val 0 10 190 .07 284 .035 366 .07 435 10 Bank Sta: Left Ri ght Lengths: Left Ch annel Right Coeff Contr. Expan. 284 366 80 95 115 .3 .5 CROSS SECTION OUTPU T Profile #bankfull ¦ E.G. Elev (ft) 754.39 Element Vel Head (ft) 0.42 Wt. n-Val. W.S. Elev (ft) 753.97 Reach Len. (ft) Crit W.S. (ft) 752.38 Flow Area (sq ft) E.G. Slope (ft/ft) 0.003058 Area (sq ft) Q Total (cfs) 800.00 Flow (cfs) Top Width (ft) 42.94 Top Width (ft) Vel Total (ft/s) 5.20 Avg. Vel. (ft/s) Max Chl Dpth (ft) 4.97 Hydr. Depth (ft) Conv. Total (cfs) 14466.1 Conv. (cfs) Length Wtd. (ft) 95.00 Wetted Per. (ft) Min Ch E1 (ft) 749.00 Shear (lb/sq ft) Alpha 1.00 Stream Power (lb/ft s) Frctn Loss (ft) 0.26 Cum Volume (acre-ft) C S E Loss (ft) 0.04 Cum SA (acres) CROSS SECTION OUTPUT Profile #PF 2 ' E.G. Elev (ft) 756.20 Element Vel Head (£t) 0.53 Wt. n-Val. W.S. Elev (ft) 755.67 Reach Len. (ft) Crit W.S. (ft) 753.48 Flow Area (sq ft) E.G. Slope (ft/ft) 0.002654 Area (sq ft) Q Total (cfs) 1350.00 Flow (cfs) Top Width (ft) 47.74 Top Width (ft) Vel Total (ft/s) 5.85 Avg. Vel. (ft/s) Max Chl Dpth (ft) 6.67 Hydr. Depth (ft) Conv. Total (cfs) 26202.8 Conv. (cfs) Length Wtd. (ft) 95.00 Wetted Per. (ft) Min Ch E1 (ft) 749.00 Shear (lb/sq ft) Alpha 1.00 Stream Power (lb/ft s) Page 2 CIVITBnk.rep Left OB 80.00 Left OB 80.00 Channel 0.035 95.00 153.78 153.78 800.00 42.94 5.20 3.58 14466.1 46.62 0.63 3.28 8.47 1.90 Channel 0.035 95.00 230.89 230.89 1350.00 47.74 5.85 4.84 26202.8 52.83 0.72 4.23 Downstream Normal S - .003 Normal S = .003 Normal S - .003 Normal S - .003 Normal S = .003 Right OB 115.00 0.01 0.01 Right OB 115.00 CIVITBnk.rep Frctn Loss (ft) 0.22 Cum Volume (acre-ft) 11.88 0.03 C & E Loss (ft) 6.05 Cum SA (acres) 2.07 0.02 CROSS SECTION OUTPUT Profile #PF 3 E.G. Elev (ft) 757.45 Element Left OB Channel Right OB Vel Head (ft) 0.55 Wt. n-Val. 0.035 W.S. Elev (ft) 756.90 Reach Len. (ft) 80.00 95.00 115.00 Crit W.S. (ft) 754.20 Flow Area (sq ft) 302.15 E.G. Slope (ft/ft) 0.002894 Area (sq ft) 302.15 Q Total (cfs) 1800.00 Flow (cfs) 1800.00 Top Width (ft) 65.77 Top Width (ft) 65.77 Vel Total (ft/s) 5.96 Avg. Vel. (ft/s) 5.96 Max Chl Dpth (ft) 7.90 Hydr. Depth (ft) 4.59 Conv. Total (cfs) 33458.3 Conv. (cfs) 33458.3 Length Wtd. (ft) 95.00 Wetted Per. (ft) 71.73 Min Ch E1 (ft) 749.00 Shear (lb/sq ft) 0.76 Alpha 1.00 Stream Power (lb/ft s) 4.53 Frctn Loss (ft) 0.22 Cum Volume (acre-ft) 0.02 14.38 0.05 C & E Loss (ft) 0.04 Cum SA (acres) 0.02 2.26 0.03 CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft) 758.28 Element Left OB Channel Right OB Vel Head (ft) 0.57 Wt. n-Val. 0.035 W.S. Elev (ft) 757.71 Reach Len. (ft) 80.00 95.00 115.00 Crit W.S. (ft) 754.71 Flow Area (sq ft) 356.03 E.G. Slope (ft/ft) 0.002504 Area (sq ft) 356.03 Q Total (cfs) 2150.00 Flow (cfs) 2150.00 Top Width (ft) 67.63 Top Width (ft) 67.63 Vel Total (ft/s) 6.04 Avg. Vel. (ft/s) 6.04 Max Chl Dpth (ft) 8.71 Hydr. Depth (ft) 5.26 Conv. Total (cfs) 42962.0 Conv. (cfs) 42962.0 Length Wtd. (ft) 95.00 Wetted Per. (ft) 74.30 Min Ch E1 (ft) 749.00 Shear (lb/sq ft) 0.75 Alpha 1.00 Stream Power (lb/ft s) 4.52 Frctn Loss (ft) 0.20 Cum Volume (acre-ft) 0.22 16.13 0.07 C & E Loss (ft) 0.02 Cum SA (acres) 0.53 2.35 0.03 CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 759.88 Element Left OB Channel Right OB Vel Head (ft) 0.66 Wt. n-Val. 8.192 0.035 W.S. Elev (ft) 759.22 Reach Len. (ft) 80.00 95.00 115.00 Crit W.S. (ft) 755.93 Flow Area (sq ft) 71.28 460.93 E.G. Slope (ft/ft) 0.002241 Area (sq ft) 71.28 460.93 Q Total (cfs) 3000.00 Flow (cfs) 0.41 2999.59 Top Width (ft) 202.79 Top Width (ft) 131.67 71.11 Vel Total (ft/s) 5.64 Avg. Vel. (ft/s) 0.01 6.51 Max Chl Dpth (ft) 10.22 Hydr. Depth (ft) 0.54 6.48 Conv. Total (cfs) 63366.4 Conv. (cfs) 8.7 63357.7 Length Wtd. (ft) 94.72 Wetted Per. (ft) 131.73 79.12 Min Ch E1 (ft) 749.00 Shear (lb/sq ft) 0.08 0.82 Alpha 1.33 Stream Power (lb/ft s) 0.00 5.31 Frctn Loss (ft) 0.19 Cum Volume (acre-ft) 5.45 19.75 1.15 C & E Loss (ft) 0.03 Cum SA (acres) 7.83 2.51 1.91 Warning: Divided flow computed for this cross-section. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 7 INPUT Description: Cross Section 7 @ Surveyed Sect 3 Station Elevation D ata num= 34 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 775 33 765 54 760 62 759 120 758 190 758 265 759 274 760 287 760 310 759.2 360 760 380 760.4 395 760 405 755 412 750.2 422 752 425 752 430 751 433 750 439 748 Page 3 446 746.5 450 ' 461 765 462 570 767 600 Manning's n Values Sta n Val Sta 0 .07 380 Bank Sta: Left Right 380 461 CROSS SECTION OUTPUT E.G. Elev (ft) Vel Head (ft) W.S. Elev (ft) Crit W.S. (ft) E.G. Slope (ft/ft) Q Total (cfs) Top Width (ft) Vel Total (ft/s) Max Chl Dpth (ft) Conv. Total (cfs) Length Wtd. (ft) Min Ch E1 (ft) Alpha Frctn Loss (ft) C & E Loss (ft) CROSS SECTION OUTPUT E.G. Elev (ft) Vel Head (ft) W.S. Elev (ft) Crit W.S. (ft) E.G. Slope (ft/ft) Q Total (cfs) Top Width (ft) Vel Total (ft/s) Max Chl Dpth (ft) Conv. Total (cfs) Length Wtd. (ft) Min Ch E1 (ft) Alpha ' Frctn Loss (ft) C & E Loss (ft) CROSS SECTION OUTPUT E.G. Elev (ft) Vel Head (ft) W.S. Elev (ft) Crit W.S. (ft) E.G. Slope (ft/ft) Q Total (cfs) Top Width (ft) Vel Total (ft/s) Max Chl Dpth (ft) Conv. Total (cfs) Length Wtd. (ft) Min Ch El (ft) Alpha Frctn Loss (ft) C & E Loss (ft) CIVITBnk.rep 749 454 753 456 755 458 760 767 477 765 540 764 570 764 770 660 778 760 780 num= 4 n Val Sta n Val Sta n Val .035 461 .07 600 10 Lengths: Left Channel Right Coeff Contr.' Expan. 340 420 340 .2 .4 Profile #bankfull 754.09 0.34 753.75 752.08 0.002521 800.00 47.92 4.68 7.25 15934.7 420.00 746.50 1.00 0.79 0.03 Element Wt. n-Val. Reach Len. (ft) Flow Area (sq ft) Area (sq ft) Flow (cfs) Top Width (ft) Avg. Vel. (ft/s) Hydr. Depth (ft) Conv. (cfs) Wetted Per. (ft) Shear (lb/sq ft) Stream Power (lb/ft s) Cum Volume (acre-ft) Cum SA (acres) Left OB 340.00 Channel 0.035 420.00 171.02 171.02 800.00 47.92 4.68 3.57 15934.7 52.60 0.51 2.39 8.12 1.80 Right OB 340.00 Profile #PF 2 755.92 Element 0.42 Wt. n-Val. 755.50 Reach Len. (ft) 753.02 Flow Area (sq ft) 0.002063 Area (sq ft) 1350.00 Flow (cfs) 52.21 Top Width (ft) 5.21 Avg. Vel. (ft/s) 9.00 Hydr. Depth (ft) 29725.2 Conv. (cfs) 420.00 Wetted Per. (ft) 746.50 Shear (lb/sq ft) 1.00 Stream Power (lb/ft s) 0.71 Cum Volume (acre-ft) 0.03 Cum SA (acres) Profile #PF 3 757.20 Element 0.48 Wt. n-Val. 756.72 Reach Len. (ft) 753.68 Flow Area (sq ft) 0.001895 Area (sq ft) 1800.00 Flow (cfs) 55.13 Top Width (ft) 5.55 Avg. Vel. (ft/s) 10.22 Hydr. Depth (ft) 41351.5 Conv. (cfs) 420.00 Wetted Per. (ft) 746.50 Shear (lb/sq ft) 1.00 Stream Power (lb/ft s) 0.67 Cum Volume (acre-ft) 0.03 Cum SA (acres) CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft) 758.05 Element Vel Head (ft) 0.53 Wt. n-Val. W.S. Elev (ft) 757.53 Reach Len. (ft) Crit W.S. (ft) 754.13 Flow Area (sq ft) Page 4 Left OB 340.00 Left OB 340.00 0.02 0.02 Channel 0.035 420.00 258.98 258.98 1350.00 52.21 5.21 4.96 29725.2 58.26 0.57 2.98 11.35 1.96 Channel 0.035 420.00 324.27 324.27 1800.00 55.13 5.55 5.88 41351.5 62.29 0.62 3.42 13.70 2.12 0.01 0.01 Right OB 340.00 0.03 0.02 Right OB 340.00 0.05 0.03 Left OB Channel Right OB 0.035 340.00 420.00 340.00 369.65 l 1 CIVITBnk.rep E.G. Slope (ft/ft) 0.001848 Area (sq ft) 369.65 Q Total (cfs) 2150.00 Flow (cfs) 2150.00 Top Width (ft) 57.07 Top Width (ft) 57.07 Vel Total (ft/s) 5.82 Avg. Vel. (ft/s) 5.82 Max Chl Dpth (ft) 11.03 Hydr. Depth (ft) 6.48 Conv. Total (cfs) 50014.3 Conv. (cfs) 50014.3 Length Wtd. (ft) 420.00 Wetted Per. (ft) 64.97 Min Ch El (ft) 746.50 Shear (lb/sq ft) 0.66 Alpha 1.00 Stream Power (lb/ft s) 3.82 Frctn Loss (ft) 0.67 Cum Volume (acre-ft) 0.22 15.34 C & E Loss (ft) 0.03 Cum SA (acres) 0.53 2.21 CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 759.66 Element Left OB Channel Vel' Head (ft) 0.59 Wt. n-Val. 0.070 0.035 W.S. Elev (ft) 759.07 Reach Len. (ft) 340.00 420.00 Crit W.S. (ft) 755.18 Flow Area (sq ft) 150.29 460.36 E.G. Slope (ft/ft) 0.001777 Area (sq ft) 150.29 460.36 Q Total (cfs) 3000.00 Flow (cfs) 109.65 2890.35 Top Width (ft) 264.91 Top Width (ft) 204.15 60.76 Vel Total (ft/s) 4.91 Avg. Vel. (ft/s) 0.73 6.28 Max Chl Dpth (ft) 12.57 Hydr. Depth (ft) 0.74 7.58 Conv. Total (cfs) 71159.3 Conv. (cfs) 2600.9 68558.4 Length Wtd. (ft) 416.82 Wetted Per. (ft) 204.17 70.07 ' Min Ch E1 (ft) 746.50 Shear (lb/sq ft) 0.08 0.73 Alpha 1.57 Stream Power (lb/ft s) 0.06 4.58 Frctn Loss (ft) 0.63 Cum Volume (acre-ft) 5.25 18.75 C & E Loss (ft) 0.03 Cum SA (acres) 7.52 2.36 ' id d fl W i Di d fo t t his cross-section . r v e ow compu e arn ng: CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 6 INPUT Description: Cross Section 6 @ Surveyed Sect 7 Station Elevation Data num= 35 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 790 40 770 50 768 55 764 100 762 300 760 400 759.7 550 760 610 759 690 758 700 757 760 757 790 758 805 759 835 759 855 758 925 759 940 759.2 945 759 955 757 967 756.8 974 753 980 750 982 749 990 748 t 1000 746.8 1009 748 1017 750 1027 760 1030 762 1038 765 1250 766 1340 768 1350 770 1380 780 Manning's n Values num= 3 Sta n Val Sta n Val Sta n Val 0 .07 967 .035 1027 .07 Bank Sta: Left Right Lengths: Left Channel Right Coef f Contr. Expan. 967 1027 380 390 400 .1 .3 CROSS SECTION OUTPUT Profile #bankfull E.G. Elev (ft) 753.26 Element Left OB Channel Vel Head (ft) 0.26 Wt. n-Val. 0.035 W.S. Elev (ft) 753.00 Reach Len. (ft) 380.00 390.00 ' Crit W.S. (ft) 750.56 Flow Area (sq ft) 194.87 E.G. Slope (ft/ft) 0.001470 Area (sq ft) 194.87 Q Total (cfs) 800.00 Flow (cfs) 800.00 Top Width (ft) 46.00 Top Width (ft) 46.00 Vel Total (ft/s) 4.11 Avg. Vel. (ft/s) 4.11 Max Chl Dpth (ft) 6.20 Hydr. Depth (ft) 4.24 Conv. Total (cfs) 20868.3 Conv. (cfs) 20868.3 Length Wtd. (ft) 390.00 Wetted Per. (ft) 48.64 Min Ch E1 (ft) 746.80 Shear (lb/sq ft) 0.37 Alpha 1.00 Stream Power (lb/ft s) 1.51 Frctn Loss (ft) 0.58 Cum Volume (acre-ft) 6.35 C & E Loss (ft) 0.00 Cum SA (acres) 1.35 Page 5 0.07 0.03 Right OB 340.00 1.15 1.91 Right OB 400.00 0.01 0.01 CIVITBnk.rep CROSS SECTION OUTPUT Profile #PF 2 ' E.G. Elev (ft) 755.19 Element Left OB Channel Vel Head (ft) 0.35 Wt. n-Val. 0.035 W.S. Elev (ft) 754.84 Reach Len. (ft) 380.00 390.00 Crit W.S. (ft) 751.59 Flow Area (sq ft) 284.22 E.G. Slope (ft/ft) 0.001404 Area (sq ft) 284.22 Q Total (cfs) 1350.00 Flow (cfs) 1350.00 Top Width (ft) 51.22 Top Width (ft) 51.22 Vel Total (ft/s) 4.75 Avg. Vel. (ft/s) 4.75 Max Chl Dpth (ft) 8.04 Hydr. Depth (ft) 5.55 Conv. Total (cfs) 36025.0 Conv. (cfs) 36025.0 Length Wtd. (ft) 390.00 Wetted Per. (ft) 55.10 Min Ch El (ft) 746.80 Shear (lb/sq ft) 0.45 Alpha 1.00 Stream Power (lb/ft s) 2.15 Frctn Loss (ft) 0.58 Cum Volume (acre-ft) 8.73 C & E Loss (ft) 0.01 Cum SA (acres) 1.46 ' CROSS SECTION OUTPUT E.G. Elev (ft) Profile #PF 3 756.50 Element Left OB Channel Vel Head (ft) 0.41 Wt. n-Val. 0.035 W.S. Elev (ft) 756.09 Reach Len. (ft) 380.00 390.00 Crit W.S. (ft) 752.31 Flow Area (sq ft) 350.43 E.G. Slope (ft/ft) 0.001376 Area (sq ft) 350.43 Q Total (cfs) 1800.00 Flow (cfs) 1800.00 Top Width (ft) 54.77 Top Width (ft) 54.77 Vel Total (ft/s) 5.14 Avg. Vel. (ft/s) 5.14 Max Chl Dpth (ft) 9.29 Hydr. Depth (ft) 6.40 ' Conv. Total (cfs) 48529.3 Conv. (cfs) 48529.3 Length Wtd. (ft) 390.00 Wetted Per. (ft) 59.48 Min Ch E1 (ft) 746.80 Shear (lb/sq ft) 0.51 Alpha 1.00 Stream Power (lb/ft s) 2.60 Frctn Loss (ft) 0.59 Cum Volume (acre-ft) 0.02 10.44 C & E Loss (ft) 0.01 Cum SA (acres) 0.02 1.59 CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft) 757.36 Element Left OB Channel Vel Head (ft), 0.46 Wt. n-Val. 0.070 0.035 W.S. Elev (ft) 756.90 Reach Len. (ft) 380.00 390.00 Crit W.S. (ft) 752.82 Flow Area (sq ft) 0.30 395.92 E.G. Slope (ft/ft) 0.001385 Area (sq ft) 0.30 395.92 Q Total (cfs) 2150.00 Flow (cfs) 0.03 2149.97 Top Width (ft) 62.91 Top Width (ft) 6.01 56.90 Vel Total (ft/s) 5.43 Avg. Vel. (ft/s) 0.11 5.43 Max Chl Dpth (ft) 10.10 Hydr. Depth (ft) 0.05 6.96 Conv. Total (cfs) 57776.6 Conv. (cfs) 0.9 57775.7 Length Wtd. (ft) 390.00 Wetted Per. (ft) 6.01 62.13 Min Ch E1 (ft) 746.80 Shear (lb/sq ft) 0.00 0.55 Alpha 1.00 Stream Power (lb/ft s) 0.00 2.99 . Frctn Loss (ft) 0.60 Cum Volume (acre-ft) 0.22 11.64 ' C & E Loss (ft) 0.01 Cum SA (acres) 0.51 1.66 CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 759.00 Element Left OB Channel Vel Head (ft) 0.52 Wt. n-Val. 0.070 0.035 W.S. Elev (ft) 758.48 Reach Len. (ft) 380.00 390.00 Crit W.S. (ft) 753.90 Flow Area (sq ft) 174.30 487.21 E.G. Slope (ft/ft) 0.001297 Area (sq ft) 174.30 487.21 Q Total (cfs) 3000.00 Flow (cfs) 128.13 2871.87 Top Width (ft) 267.19 Top Width (ft) 208.71 58.48 Vel Total (ft/s) 4.54 Avg. Vel. (ft/s) 0.74 5.89 Max Chl Dpth (ft) 11.68 Hydr. Depth (ft) 0.84 8.33 Conv. Total (cfs) 83299.9 Conv. (cfs) 3557.7 79742.1 Length Wtd. (ft) 389.72 Wetted Per. (ft) 208.96 64.37 Min Ch E1 (ft) 746.80 Shear (lb/sq ft) 0.07 0.61 Alpha 1.62 Stream Power (lb/ft s) 0.05 3.61 Frctn Loss (ft) 0.62 Cum Volume (acre-ft) 3.98 14.18 Page 6 Right OB 400.00 0.03 0.02 Right OB 400.00 0.05 0.03 Right OB 400.00 0.07 0.03 Right OB 400.00 1.15 s CIVITBnk.rep C & E LOSS (ft) 0.02 Cum SA (acres) 5.91 1.79 1.91 Di id d fl i t t d f his cross-section or . ow compu e v e Warn ng: CROSS SECTION R IVER: Salem Creek REACH: Civitan park RS: 5 INPUT Description: Cross Secti on 5 @ Surveyed Sect 8 Station Elevation Data num- 26 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 774 30 768 50 766 100 765.5 220 764 320 762 570 762 710 760 750 758 800 757.2 950 757.2 1100 758 1170 758 1191 759.8 1195 756 1200 750 1202 748 1210 747 1215 746.3 1234 748 1239 753 1245 758 1250 763.5 1260 764 1380 764 1381 774 Manning's n Values num- 3 Sta n Val Sta 0 .07 1191 n Val .035 Sta n Val 1250 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1191 1250 420 410 400 .1 .3 CROSS SECTION OUTPUT Profile #bankfull E.G. Elev (ft) 752.68 Element Left OB Channel Right OB Vel Head (ft) 0.29 Wt. n-Val. 0.035 W.S. Elev (ft) 752.39 Reach Len. (ft) 420.00 410.00 400.00 Crit W.S. (ft) 749.85 Flow Area (sq ft) 186.21 E.G. Slope (ft/ft) 0.001511 Area (sq ft) 186.21 Q Total (cfs) 800.00 Flow (cfs) 800.00 Top Width (ft) 40.38 Top Width (ft) 40.38 Vel Total (ft/s) 4.30 Avg. Vel. (ft/s) 4.30 Max Chl Dpth (ft) 6.09 Hydr. Depth (ft) 4.61 Conv. Total (cfs) 20578.6 Conv. (cfs) 20578.6 Length Wtd. (ft) 410.00 Wetted Per. (ft) 44.34 Min Ch E1 (ft) 746.30 Shear (lb/sq ft) 0.40 Alpha 1.00 Stream Power (lb/ft s) 1.70 Frctn Loss (ft) 0.38 Cum Volume (acre-ft) 4.65 0.01 C & E Loss (ft) 0.04 Cum SA (acres) 0.96 0.01 Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or gre ater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION OUTPUT Profile #PF 2 E.G. Elev (ft) 754.60 Element Left OB Channel Right OB ' Vel Head (ft) 0.41 Wt. n-Val. 0.035 W.S. Elev (ft) 754.19 Reach Len. (ft) 420.00 410.00 400.00 Crit W.S. (ft) 750.90 Flow Area (sq ft) 261.76 E.G. Slope (ft/ft) 0.001597 Area (sq ft) 261.76 Q Total (cfs) 1350.00 Flow (cfs) 1350.00 t Top Width (ft) 43.91 Top Width (ft) 43.91 Vel Total (ft/s) 5.16 Avg. Vel. (ft/s) 5.16 Max Chl Dpth (ft) 7.89 Hydr. Depth (ft) 5.96 Conv. Total (cfs) 33782.7 Conv. (cfs) 33782.7 Length Wtd. (ft) 410.00 Wetted Per. (ft) 49.39 Min Ch E1 (ft) 746.30 Shear (lb/sq ft) 0.53 Alpha 1.00 Stream Power (lb/ft s) 2.73 Frctn Loss (ft) 0.46 Cum Volume (acre-ft) 6.29 0.03 C & E Loss (ft) 0.04 Cum SA (acres) 1.03 0.02 CROSS SECTION OUTPUT Profile #PF 3 E.G. Elev (ft) 755.90 Element Left OB Channel Right OB Vel Head (ft) 0.50 Wt. n-Val. 0.035 W.S. Elev (ft) 755.40 Reach Len. (ft) 420.00 410.00 400.00 Crit W.S. (ft) 751.66 Flow Area (sq ft) 316.55 E.G. Slope (ft/ft) 0.001650 Area (sq ft) 316.55 Page 7 CIVITBnk.rep Q Total (cfs) 1800.00 Flow (cfs) 1800.00 Top Width (ft) 46.38 Top Width (ft) 46.38 Vel Total (ft/s) 5.69 Avg. Vel. (ft/s) 5.69 Max Chl Dpth (ft) 9.10 Hydr. Depth (ft) 6.83 Conv. Total (cfs) 44317.5 Conv. (cfs) 44317.5 Length Wtd. (ft) 410.00 Wetted Per. (ft) 52.86 Min Ch E1 (ft) 746.30 Shear (lb/sq ft) 0.62 ' Alpha 1.00 Stream Power (lb/ft s) 3.51 Frctn Loss (ft) 0.53 Cum Volume (acre-ft) 0.02 7.46 0.05 C & E Loss (ft) 0.04 Cum SA (acres) 0.02 1.14 0.03 ' CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft) 756.74 Element Left OB Channel Right OB Vel Head (ft) W.S. Elev (ft) 0.58 756.17 Wt. n-Val. Reach Len. (ft) 420.00 0.035 410.00 400.00 Crit W.S. (ft) 752.19 Flow Area (sq ft) 352.80 E.G. Slope (ft/ft) 0.001733 Area (sq ft) 352.80 Q Total (cfs) 2150.00 Flow (cfs) 2150.00 Top Width (ft) 47.98 Top Width (ft) 47.98 Vel Total (ft/s) 6.09 Avg. Vel. (ft/s) 6.09 Max Chl Dpth (ft) 9.87 Hydr. Depth (ft) 7.35 Conv. Total (cfs) 51653.3 Conv. (cfs) 51653.3 Length Wtd. (ft) 410.02 Wetted Per. (ft) 55.09 Min Ch El (ft) 746.30 Shear (lb/sq ft) 0.69 Alpha 1.00 Stream Power (lb/ft s) 4.22 Frctn Loss (ft) 0.58 Cum Volume (acre-ft) 0.22 8.29 0.07 C & E Loss (ft) 0.05 Cum SA (acres) 0.48 1.20 0.03 CROSS SECTION OUTPUT Pr ofile #PF 5 E.G. Elev (ft) 758.36 Element Left OB Channel Right OB Vel Head (ft) 0.75 Wt. n-Val. 0.070 0.035 W.S. Elev (ft) 757.61 Reach Len. (ft) 420.00 410.00 400.00 Crit W.S. (ft) 753.37 Flow Area (sq ft) 83.73 424.60 E.G. Slope (ft/ft) 0.001963 Area (sq ft) 83.73 424.60 Q Total (cfs) 3000.00 Flow (cfs) 37.61 2962.39 Top Width (ft) 304.94 Top Width (ft) 253.70 51.24 Vel Total (ft/s) 5.90 Avg. Vel. (ft/s) 0.45 6.98 Max Chl Dpth (ft) 11.31 Hydr. Depth (ft) 0.33 8.29 Conv. Total (cfs) 67703.3 Conv. (cfs) 848.8 66854.5 Length Wtd. (ft) 410.27 Wetted Per. (ft) 253.70 59.45 Min Ch E1 (ft) 746.30 Shear (lb/sq ft) 0.04 0.88 Alpha 1.38 Stream Power (lb/ft s) 0.02 6.11 Frctn Loss (ft) 0.64 Cum Volume (acre-ft) 2.86 10.10 1.15 C & E Loss (ft) 0.08 Cum SA (acres) 3.89 1.30 1.91 ' Warning: Divided flow comp uted for this cross-section. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 4 INPUT ' Description: Cross Section 4 @ Surveyed sect 12 Station Elevation Data num= 40 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 772 40 768 80 766 100 764 140 764 400 762.8 500 764 600 762 660 760 690 759 735 758 760 757 765 756 770 755 780 755 850 756 900 757 915 758 928 757 941 757.2 943 751 950 747 958 744.3 963 744.3 971 745 978 745.3 982 747 985 753.5 997 757 1052 757 1100 756.6 1145 756 1165 757 1185 758 1200 759 1210 761 1220 762 1230 764 1245 766 1300 770 Manning's n Values num- 3 Sta n Val Sta n Val Sta n Val 0 .07 941 .035 997 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 941 997 210 170 140 .1 .3 Page 8 CIVITBnk.rep CROSS SECTION OUTPUT Profile #bankfull E.G. Elev (ft) 752.26 Element Left OB Channel Right OB Vel Head (ft) 0.16 Wt. n-Val. 0.035 W.S. Elev (ft) 752.10 Reach Len. (ft) 210.00 170.00 140.00 Crit W.S. (ft) 747.86 Flow Area (sq ft) 250.71 ' E.G. Slope (ft/ft) 0:000618 Area (sq ft) 250.71 Q Total (cfs) 800.00 Flow (cfs) 800.00 Top Width (ft) 41.71 Top Width (ft) 41.71 Vel Total (ft/s) 3.19 Avg. Vel. (ft/s) 3.19 Max Chl Dpth (ft) 7.80 Hydr. Depth (ft) 6.01 Conv. Total (cfs) 32189.6 Conv. (cfs) 32189.6 Length Wtd. (ft) 170.00 Wetted Per. (ft) 47.67 Min Ch E1 (ft) 744.30 Shear (lb/sq ft) 0.20 Alpha 1.00 Stream Power (lb/ft s) 0.65 Frctn Loss (ft) 0.17 Cum Volume (acre-ft) 2.59 0.01 C & E Loss (ft) 0.02 Cum SA (acres) 0.58 0.01 Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less ' than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION OUTPUT Profile #PF 2 E.G. Elev (ft) 754.09 Element Left OB Channel Right OB Vel Head (ft) 0.27 Wt. n-Val. 0.035 W.S. Elev (ft) 753.82 Reach Len. (ft) 210.00 170.00 140.00 Crit W.S. (ft) 748.98 Flow Area (sq ft) 323.60 E.G. Slope (ft/ft) 0.000847 Area (sq ft) 323.60 Q Total (cfs) 1350.00 Flow (cfs) 1350.00 Top Width (ft) 44.01 Top Width (ft) 44.01 Vel Total (ft/s) 4.17 Avg. Vel. (ft/s) 4.17 Max Chl Dpth (ft) 9.52 Hydr. Depth (ft) 7.35 Conv. Total (cfs) 46389.0 Conv. (cfs) 46389.0 Length Wtd. (ft) 170.00 Wetted Per. (ft) 52.15 Min Ch El (ft) 744.30 Shear (lb/sq ft) 0.33 Alpha 1.00 Stream Power (lb/ft s) 1.37 Frctn Loss (ft) 0.22 Cum Volume (acre-ft) 3.53 0.03 C & E Loss (ft) 0.03 Cum SA (acres) 0.62 0.02 Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION OUTPUT Profile #PF 3 E.G. Elev (ft) 755.33 Element Left OB Channel Right OB Vel Head (ft) 0.35 Wt. n-Val. 0.035 W.S. Elev (ft) 754.97 Reach Len, (ft) 210.00 170.00 140.00 Crit W.S. (ft) 749.77 Flow Area (sq ft) 376.93 E.G. Slope (ft/ft) 0.001031 Area (sq ft) 376.93 Q Total (cfs) 1800.00 Flow (cfs) 1800.00 Top Width (ft) 48.34 Top Width (ft) 48.34 Vel Total (ft/s) 4.78 Avg. Vel. (ft/s) 4.78 Max Chl Dpth (ft) 10.67 Hydr. Depth (ft) 7.80 Conv. Total (cfs) 56055.4 Conv. (cfs) 56055.4 Length Wtd. (ft) 170.00 Wetted Per. (ft) 57.49 Min Ch E1 (ft) 744.30 Shear (lb/sq ft) 0.42 Alpha Frctn Loss (ft) 1.00 0.29 Stream Power (lb/ft s) Cum Volume (acre-ft) 2.02 0.02 4.19 0.05 C & E Loss (ft) 0.03 Cum SA (acres) 0.02 0.70 0.03 Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION OUTPUT E.G. Elev (ft) Vel Head (ft) W.S. Elev (ft) Crit W.S. (ft) E.G. Slope (ft/ft) Profile #PF 4 756.12 Element 0.41 Wt. n-Val. 755.71 Reach Len. (ft) 750.32 Flow Area (sq ft) 0.001157 Area (sq ft) Page 9 Left OB Channel Right OB 0.070 0.035 210.00 170.00 140.00 25.78 413.29 25.78 413.29 1 CIVITBnk.rep Q Total (cfs) 2150.00 Flow (cfs) 10.25 2139.75 Top Width (ft) 114.07 Top Width (ft) 62.99 51.08 Vel Total (ft/s) 4.90 Avg. Vel. (ft/s) 0.40 5.18 Max Chl Dpth (ft) 11.41 Hydr. Depth (ft) 0.41 8.09 Conv. Total (cfs) 63213.9 Conv. (cfs) 301.5 62912.4 Length Wtd. (ft) 170.10 Wetted Per. (ft) 63.06 60.87 Min Ch El (ft) 744.30 Shear (lb/sq ft) 0.03 0.49 Alpha 1.11 Stream Power (lb/ft s) 0.01 2.54 Frctn Loss (ft) 0.31 Cum Volume (acre-ft) 0.09 4.69 0.07 C & E Loss (ft) 0.03 Cum SA (acres) 0.18 0.73 0.03 ' Warning: Divided flow computed for this cross-section. Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 757.64 Element Left OB Channel Right OB Vel Head (ft) 0.47 Wt. n-Val. 0.070 0.035 0.070 W.S. Elev (ft) 757.17 Reach Len. (ft) 210.00 170.00 140.00 Crit W.S. (ft) 751.50 Flow Area (sq ft) 185.45 492.00 79.89 E.G. Slope (ft/ft) 0.001262 Area (sq ft) 185.45 492.00 79.89 Q Total (cfs) 3000.00 Flow (cfs) 161.76 2802.03 36.21 Top Width (ft) 387.41 Top Width (ft) 160.02 55.99 171.39 Vel Total (ft/s) Max Chl Dpth (ft) 3.96 12.87 Avg. Vel. (ft/s) Hydr. Depth (ft) 0.87 1.16 5.70 8.79 0.45 0.47 Conv. Total (cfs) 84464.3 Conv. (cfs) 4554.4 78890.4 1019.5 Length Wtd. (ft) 170.85 Wetted Per. (ft) 160.25 67.03 171.43 Min Ch E1 (ft) 744.30 Shear (lb/sq ft) 0.09 0.58 0.04 Alpha 1.93 Stream Power (lb/ft s) 0.08 3.29 0.02 Frctn Loss (ft) 0.32 Cum Volume (acre-ft) 1.56 5.79 0.78 C & E Loss (ft) 0.03 Cum SA (acres) 1.90 0.79 1.12 Warning: Divided flow computed for this cross-section. Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7 or greater than 1.4. This may indicate the need for additional cross sections. t 1 1 CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 3 INPUT Description: Cross Section 3 @ Surveyed sect 13 Station Elevation Data num-- 33 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 772 30 768 45 764 65 762 80 760 120 758 150 758 180 760 300 760 400 763 520 762 830 760 850 761 880 760 900 757 960 756 1010 756 1012 755.8 1022 750 1030 746 1032 744.7 1037 745 1044 746 1050 747 1053 750 1058 754 1068 754 1088 757 1200 756 1290 756 1310 760 1370 766 1450 770 Manning's n Values num= 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 10 400 .07 1012 .035 1088 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1012 1088 165 160 155 .1 .3 CROSS SECTION OUTPUT Profile #bankfull E.G. Elev (ft) 752.07 Element Left OB Channel Vel Head (ft) 0.36 Wt. n-Val. 0.035 W.S. Elev (ft) 751.71 Reach Len. (ft) 165.00 160.00 Crit W.S. (ft) 749.13 Flow Area (sq ft) 165.24 E.G. Slope (ft/ft) 0.001953 Area (sq ft) 165.24 Q Total (cfs) 800.00 Flow (cfs) 800.00 Top Width (ft) 36.07 Top Width (ft) 36.07 Vel Total (ft/s) 4.84 Avg. Vel. (ft/s) 4.84 Max Chl Dpth (ft) 7.01 Hydr. Depth (ft) 4.58 Conv. Total (cfs) 18102.8 Conv. (cfs) 18102.8 Length Wtd. (ft) 160.00 Wetted Per. (ft) 39.86 Page 10 Right OB 155.00 Min Ch E1 (ft) Alpha Frctn Loss (ft) C & E Loss (ft) r. t l CIVITBnk.rep 744.70 Shear (lb/sq ft) 0.51 1.00 Stream Power (lb/ft s) 2.45 0.28 Cum Volume (acre-ft) 1.78 0.01 0.02 Cum SA (acres) 0.42 0.01 CROSS SECTION OUTPUT Profile #PF 2 E.G. Elev (ft) 753.84 Element Left OB Channel Right OB Vel Head (ft) 0.55 Wt. n-Val. 0.035 W.S. Elev (ft) 753.28 Reach Len. (ft) 165.00 160.00 155.00 Crit W.S. (ft) 750.43 Flow Area (sq ft) 225.81 E.G. Slope (ft/ft) 0.002344 Area (sq ft) 225.81 Q Total (cfs) 1350.00 Flow (cfs) 1350.00 Top Width (ft) 40.76 Top Width (ft) 40.76 Vel Total (ft/s) 5.98 Avg. Vel. (ft/s) 5.98 Max Chl Dpth (ft) 8.58 Hydr. Depth (ft) 5.54 Conv. Total (cfs) 27881.1 Conv. (cfs) 27881.1 Length Wtd. (ft) 159.99 Wetted Per. (ft) 45.53 Min Ch E1 (ft) 744.70 Shear (lb/sq ft) 0.73 Alpha 1.00 Stream Power (lb/ft s) 4.34 Frctn Loss (ft) 0.32 Cum Volume (acre-ft) 2.46 .0.03 C & E Loss (ft) 0.03 Cum SA (acres) 0.46 0.02 CROSS SECTION OUTPUT Profile #PF 3 E.G. Elev (ft) 755.01 Element Left OB Channel Right OB Vel Head (ft) 0.67 Wt. n-Val. 0.035 W.S. Elev (ft) 754.34 Reach Len. (ft) 165.00 160.00 155.00. Crit W.S. (ft) 751.32 Flow Area (sq ft) 274.55 E.G. Slope (ft/ft) 0.003217 Area (sq ft) 274.55 Q Total (cfs) 1800.00 Flow (cfs) 1800.00 Top Width (ft) 55.79 Top Width (ft) 55.79 Vel Total (ft/s) 6.56 Avg. Vel. (ft/s) 6.56 Max Chl Dpth (ft) 9.64 Hydr. Depth (ft) 4.92 Conv. Total (cfs) 31733.9 Conv. (cfs) 31733.9 Length Wtd. (ft) 159.99 Wetted Per. (ft) 61.12 Min Ch El (ft) 744.70 Shear (lb/sq ft) 0.90 Alpha 1.00 Stream Power (lb/ft s) 5.92 Frctn Loss (ft) 0.39 Cum Volume (acre-ft) 0.02 2.92 0.05 C & E Loss (ft) 0.03 Cum SA (acres) 0.02 0.49 0.03 CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft)' 755.78 Element Left OB Channel Right OB Vel Head (ft) 0.71 Wt. n-Val. 0.035 W.S. Elev (ft) 755.07 Reach Len. (ft) 165.00 160.00 155.00 Crit W.S. (ft) 751.92 Flow Area (sq ft) 317.18 E.G. Slope (ft/ft) 0.003236 Area (sq ft) 317.18 Q Total (cfs) 2150.00 Flow (cfs) 2150.00 Top Width (ft) 61.87 Top Width (ft) 61.87 Vel Total (ft/s) 6.78 Avg. Vel. (ft/s) 6.78 Max Chl Dpth (ft) 10.37 Hydr. Depth (ft) 5.13 Conv. Total (cfs) 37797.0 Conv. (cfs) 37797.0 Length Wtd. (ft) 159.98 Wetted Per. (ft) 67.45 Min Ch E1 (ft) 744.70 Shear (lb/sq ft) 0.95 Alpha 1.00 Stream Power (lb/ft s) 6.44 Frctn Loss (ft) 0.40 Cum Volume (acre-ft) 0.03 3.26 0.07 C & E Loss (ft) 0.02 Cum SA (acres) 0.03 0.51 0.03 CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 757.30 Element Left OB Channel Right OB Vel Head (ft) 0.75 Wt. n-Val. 0.070 0.035 0.070 W.S. Elev (ft) 756.55 Reach Len. (ft) 165.00 160.00 155.00 Crit W.S. (ft) 753.24 Flow Area (sq ft) 37.81 417.47 67.08 E.G. Slope (ft/ft) 0.002963 Area (sq f t) 37.81 417.47 67.08 Q To tal (cfs) 3000.00 Flow (cfs) 25.47 2930.05 44.48 Top Width (ft) 312.21 Top Width (ft) 84.96 72.99 154.26 Vel Total (ft/s) 5.74 Avg. Vel. (ft/s) 0.67 7.02 0.66 Max Chl Dpth (ft) 11.85 Hydr. Depth (ft) 0.45 5.72 0.43 Page 11 CIVITBnk.rep Con,. Total (cfs) 55109.3 Conv. (cfs) 467.8 53824.4 817.1 Length Wtd. (ft) 159.98 Wetted Per. (ft) 84.97 78.88 154.32 Min Ch E1 (ft) 744.70 Shear (lb/sq ft) 0.08 0.98 0.08 Alpha 1.46 Stream Power (lb/ft s) 0.06 6.87 0.05 Frctn Loss (ft) 0.37 Cum Volume (acre-ft) 1.02 4.01 0.55 C & E Loss (ft) 0.00 Cum SA (acres) 1.31 0.54 0.60 f t ti hi - or Warning: Divided flow computed on. s cross sec CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 2 INPUT Description: Cross Section 2 Surveyed Sect. 15 Station Elevation Data num- 27 Sta Elev Sta Elev Sta Elev Sta Elev Sta Elev 0 770 20 768 110 765 190 762 420 762.8 660 762 900 760 1030 757 1060 756 1080 755 1137 755 1176 756 1200 757 1210 750 1216 746 1231 746.7 1238 1250 750 1255 746.1 755 1244 747 1246 1308 755 1325 748 1249 757 1340 749 760 1345 765 1370 770 Manning's n Values num-- 4 Sta n Val Sta n Val Sta n Val Sta n Val 0 10 900 .07 1200 .035 1250 .07 Bank Sta: Left Right Lengths: Left Channel Right Coeff Contr. Expan. 1200 1250 280 300 240 .2 .4 CROSS SECTION OUTPUT Profile #bankfull E.G. Elev (ft) 751.77 Element Left OB Channel Right OB Vel Head (ft) 0.30 Wt. n-Val. 0.035 0.070 W.S. Elev (ft) 751.47 Reach Len. (ft) 280.00 300.00 240.00 Crit W.S. (ft) 749.18 Flow Area (sq ft) 182.96 1.08 E.G. Slope (ft/ft) 0.001618 Area (sq ft) 182.96 1.08 Q Total (cfs) 800.00 Flow (cfs) 799.40 0.60 Top Width (ft) 43.57 Top Width (ft) 42.10 1.47 Vel Total (ft/s) 4.35 Avg. Vel. (ft/s) 4.37 0.55 Max Chl Dpth (ft) 5.47 Hydr. Depth (ft) 4.35 0.73 Conv. Total .(cfs) 19891.1 Conv. (cfs) 19876.3 14.8 Length Wtd. (ft) 299.97 Wetted Per. (ft) 44.69 2.08 Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.41 0.05 Alpha 1.01 Stream Power (lb/ft s) 1.81 0.03 Frctn Loss (ft) 0.65 Cum Volume (acre-ft) 1.14 0.00 C & E Loss (ft) 0.03 Cum SA (acres) 0.28 0.01 CROSS SECTION OUTPUT Profile #PF 2 E.G. Elev (ft) 753.48 Element Left OB Channel Right OB Vel Head (ft) 0.45 Wt. n-Val. 0.035 0.070 W.S. Elev (ft) 753.04 Reach Len. (ft) 280.00 300.00 240.00 Crit W.S. (ft) 750.21 Flow Area (sq ft) 250.75 4.61 E.G. Slope (ft/ft) 0.001735 Area (sq ft) 250.75 4.61 Q Total (cfs) 1350.00 Flow (cfs) 1345.72 4.28 Top Width (ft) 47.38 Top Width (ft) 44.34 3.04 Vel Total (ft/s) 5.29 Avg. Vel. (ft/s) 5.37 0.93 Max Chl Dpth (ft) 7.04 Hydr. Depth (ft) 5.66 1.52 Conv. Total (cfs) 32409.0 Conv. (cfs) 32306.3 102.7 Length Wtd. (ft) 299.86 Wetted Per. (ft) 47.43 4.30 Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.57 0.12 Alpha 1.03 Stream Power (lb/ft s) 3.07 0.11 Frctn Loss (ft) 0.67 Cum Volume (acre-ft) 1.59 0.02 C & E Loss (ft) 0.04 Cum SA (acres) 0.30 0.01 CROSS SECTION OUTPUT Profile #PF 3 E.G. Elev (ft) 754.60 Element Left OB Channel Right OB Vel Head (ft) 0.57 Wt. n-Val. 0.035 0.070 W.S. Elev (ft) 754.03 Reach Len. (ft) 260.00 300.00 240.00 11 Page 12 CIVITBnk.rep Crit W.S. (ft) 750.93 Flow Area (sq ft) 295.45 8.12 E.G. Slope (ft/ft) O.OOi865 Area (sq ft) 295.45 8.12 Q Total (cfs) 1800.00 Flow (cfs) 1790.57 9.43 Top Width (ft) 49.79 Top Width (ft) 45.76 4.03 Vel Total (ft/s) 5.93 Avg. Vel. (ft/s) 6.06 1.16 Max Chl Dpth (ft) 8.03 Hydr. Depth (ft) 6.46 2.02 Conv. Total (cfs) 41682.0 Conv. (cfs) 41463.7 218.3 Length Wtd. (ft) 299.73 Wetted Per. (ft) 49.16 5.70 Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.70 0.17 Alpha 1.04 Stream Power (lb/ft s) 4.24 0.19 Frctn Loss (ft) 0.70 Cum Volume (acre-ft) 0.02 1.88 0.03 C & E Loss (ft) 0.05 Cum SA (acres) 0.02 0.31 0.02 CROSS SECTION OUTPUT Profile #PF 4 E.G' . Elev (ft) 755.37 Element Left OB Channel Right OB Vel Head (ft) 0.66 Wt. n-Val. 0.035 0.070 W.S. Elev (ft) 754.71 Reach Len. (ft) 280.00 300.00 240.00 Crit W.S. (ft) 751.45 Flow Area (sq ft) 327.02 11.10 E.G. Slope (ft/ft) Q Total (cfs) 0.001952 2150.00 Area (sq ft) Flow (cfs) 327.02 2135.36 11.10 14.64 Top Width (ft) 51.44 Top Width (ft) 46.73 4.71 Vel Total (ft/s) 6.36 Avg. Vel. (ft/s) 6.53 1.32 Max Chl Dpth (ft) 8.71 Hydr. Depth (ft) 7.00 2.36 Conv. Total (cfs) 48660.2 Conv. (cfs) 48328.9 331.3 Length Wtd. (£t) 299.61 Wetted Per. (ft) 50.35 6.66 Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.79 0.20 Alpha 1.05 Stream Power (lb/ft s) 5.17 0.27 Frctn Loss (ft) 0.72 Cum Volume (acre-ft) 0.03 2.08 0.05 C & E Loss (ft) 0.05 Cum SA (acres) 0.03 0.31 0.02 CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 756.92 Element Left OB Channel Right OB Vel Head (ft) 0.73 Wt. n-Val. 0.070 0.035 0.070 W.S. Elev (ft) 756.18 Reach Len. (ft) 280.00 300.00 240.00 Crit W.S. (ft) 752.56 Flow Area (sq ft) 108.74 397.32 87.12 E.G. Slope (ft/ft) 0.001895 Area (sq ft) 108.74 397.32 87.12 Q Total (cfs) 3000.00 Flow (cfs) 91.10 2815.92 92.98 Top Width (ft) 242.82 Top Width (ft) 125.93 48.83 68.06 Vel Total (ft/s) 5.06 Avg. Vel. (ft/s) 0.84 7.09 1.07 Max Chl Dpth (ft) 10.18 Hydr. Depth (ft) 0.86 8.14 1.28 Conv. Total (cfs) 68907.4 Conv. (cfs) 2092.6 64679.3 2135.6 Length Wtd. (ft) 298.29 Wetted Per. (ft) 125.97 52.92 70.20 Min Ch E1 (ft) 746.00 Shear (lb/sq ft) 0.10 0.89 0.15 Alpha 1.85 Stream Power (lb/ft s) 0.09 6.30 0.16 Frctn Loss (ft) 0.70 Cum Volume (acre-ft) 0.74 2.51 0.27 C & E Loss (ft) 0.08 Cum SA (acres) 0.91 0.32 0.20 1 Warning: Divided flow computed for this cross-section. CROSS SECTION RIVER: Salem Creek REACH: Civitan park RS: 1 INPUT Description: XSec 1 @ surveyed sect 16 Station Elevation Data num= 20 Sta Elev Sta Elev Sta Elev 0 766 26 756 28 755 200 754 270 754.5 272 754 2B6 750 291 747.2 296 747 318 746 322 747 324 750 Manning's n Value s num= 4 Sta n Val Sta n Val Sta n Val 0 10 200 .07 281 .035 Bank Sta: Left Right Lengths: Left Channel 281 324 0 0 Sta Elev Sta Elev 124 755 182 754 275 752.3 281 752.3 307 746 314 745.5 339 766 350 768 Sta n Val 324 .07 Right Coeff Contr. Expan. 0 . .3 .5 CROSS SECTION OUTPUT Profile #bankfull Page 13 CIVITBnk.rep E.G. Elev (ft) 751.09 Element Left OB Channel Right OB Vel Head (ft) 0.45 Wt. n-Val. 0.035 0.070 W.S. Elev (ft) 750.64 Reach Len. (ft) Crit W.S. (ft) 749.06 Flow Area (sq ft) 148.44 0.19 E.G. Slope (ft/ft) 0.003001 Area (sq ft) 148.44 0.19 Q Total (cfs) 800.00 Flow (cfs) 799.92 0.08 Top Width (ft) 39.99 Top Width (ft) 39.39 0.60 Vel Total (ft/s) 5.38 Avg. Vel. (ft/s) 5.39 0.42 Max Chl Dpth (ft) 5.14 Hydr. Depth (ft) 3.77 0.32 Conv. Total (cfs) 14604.6 Conv. (cfs) 14603.2 1.5 Length Wtd. (ft) Wetted Per. (ft) 42.08 0.87 Min Ch E1 (ft) 745.50 Shear (lb/sq ft) 0.66 0.04 Alpha 1.00 Stream Power (lb/ft s) 3.56 0.02 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) CROSS SECTION OUTPUT Profile #PF 2 E.G. Elev (ft) Vel Head (ft) 752.77 0.64 Element Wt. n-Val. Left OB Channel 0.035 Right OB 0.070 W.S. Elev (ft) 752.13 Reach Len. (ft) Crit W:S. (ft) 750.13 Flow Area (sq ft) 209.72 2.13 E.G. Slope (ft/ft) 0.003002 Area (sq ft) 209.72 2.13 Q Total (cfs) 1350.00 Flow (cfs) 1347.99 2.01 Top Width (ft) 44.63 Top Width (ft) 42.64 2.00 Vel Total (ft/s) 6.37 Avg. Vel. (ft/s) 6.43 0.94 Max Chl Dpth (ft) 6.63 Hydr. Depth (ft) 4.92 1.07 Conv. Total (cfs) 24638.7 Conv. (cfs) 24602.0 36.7 Length Wtd. (ft) Wetted Per. (ft) 45.66 2.92 ' Min Ch E1 (ft) 745.50 Shear (lb/sq ft) 0.86 0.14 Alpha 1.02 Stream Power (lb/ft s) 5.53 0.13 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) CROSS SECTION OUTPUT P fil #PF 3 ro e E.G. Elev (ft) 753.85 Element Left OB Channel Right OB Vel Head (ft) 0.80 Wt. n-Val. 0.070 0.035 0.070 W.S. Elev (ft) 753.06 Reach Len. (ft) Crit W.S. (ft) 750.89 Flow Area (sq ft) 5.05 249.44 4.38 E.G. Slope (ft/ft) 0.003005 Area (sq ft) 5.05 249.44 4.38 Q Total (cfs) 1100.00 Flow (cfs) 4.49 1790.26 5.25 Top Width (ft) 53.20 Top Width (ft) 7.34 43.00 2.87 Vel Total (ft/s) 6.95 Avg. Vel. (ft/s) 0.89 7.18 1.20 Max Chl Dpth (ft) 7.56 Hydr. Depth (ft) 0.69 5.80 1.53 Conv. Total (cfs) 32834.0 Conv. (cfs) 82.0 32656.3 95.8 Length Wtd. (ft) Wetted Per. (ft) 7.53 46.06 4.19 Min Ch El (ft) 745.50 Shear (lb/sq ft) 0.13 1.02 0.20 Alpha 1.06 Stream Power (lb/ft s) 0.11 7.29 0.24 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) CROSS SECTION OUTPUT Profile #PF 4 E.G. Elev (ft) 754.60 Element Left OB Channel Right OB Vel Head (ft) W.S. Elev (ft) 0.91 753.69 Wt. n-Val. Reach Len. (ft) 0.070 0.035 0.070 Crit W.S. (ft) 751.44 Flow Area (sq ft) 10.08 276.85 6.40 E.G. Slope (ft/ft) 0.003001 Area (sq ft) 10.08 276.85 6.40 Q Total (cfs) 2150.00 Flow (cfs) 12.80 2128.50 8.69 Top Width (ft) 54.92 Top Width (ft) 8.46 43.00 3.46 Vel Total (ft/s) 7.33 Avg. Vel. (ft/s) 1.27 7.69 1.36 Max Chl Dpth (ft) 8.19 Hydr. Depth (ft) 1.19 6.44 1.85 Conv. Total (cfs) 39246.2 Conv. (cfs) 233.7 38853.8 158.7 Length Wtd. (ft) Wetted Per. (ft) 8.83 46.06 5.06 Min Ch E1 (ft) 745.50 Shear (lb/sq ft) 0.21 1.13 0.24 Alpha 1.09 Stream Power (lb/ft s) 0.27 8.66 0.32 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) Page 14 T CIVITBnk.rep CROSS SECTION OUTPUT Profile #PF 5 E.G. Elev (ft) 756.13 Element Left OB Channel Right OB Vel Head (ft) 1.13 Wt. n-Val. 0.103 0.035 0.070 W.S. Elev (ft) 755.00 Reach Len. (ft) Crit W.S. (ft) 752.61 Flow Area (sq ft) 122.62 332.96 11.71 E.G. Slope (ft/ft) 0.003004 Area (sq ft) 122.62 332.96 11.71 Q Total (cfs) 3000.00 Flow (cfs) 84.07 2896.44 19.49 Top Width (ft) 204.64 Top Width (ft) 156.95 43.00 4.69 Vel Total (ft/s) 6.42 Avg. Vel. (ft/s) 0.69 8.70 1.66 Max Chl Dpth (ft) 9.50 Hydr. Depth (ft) 0.78 7.74 2.50 Conv. Total (cfs) 54737.8 Conv. (cfs) 1534.0 52848.2 355.5 Length Wtd. (ft) Wetted Per. (ft) 157.47 46.06 6.85 Min Ch E1 (ft) 745.50 Shear (lb/sq ft) 0.15 1.36 0.32 Alpha 1.77 Stream Power (lb/ft s) 0.10 11.79 0.53 Frctn Loss (ft) Cum Volume (acre-ft) C & E Loss (ft) Cum SA (acres) SUMMARY OF MANNING'S N VALUES River:Salem Creek Reach River Sta. nl n2 n3 n4 n5 Civitan park 8 10 .07 .035 .07 10 Civitan park 7 .07 .035 .07 10 Civitan park 6 .07 .035 .07 Civitan park 5 .07 .035 .07 Civitan park 4 .07 .035 .07 Civitan park 3 10 .07 .035 .07 Civitan park 2 10 .07 .035 .07 Civitan park 1 10 .07 .035 .07 SUMMARY OF REACH LENGTHS River: Salem Creek Reach River Sta. Left Channel Right Civitan park 8 80 95 115 Civitan park 7 340 420 340 Civitan park 6 380 390 400 Civitan park 5 420 410 400 Civitan park 4 210 170 140 Civitan park 3 165 160 155 Civitan park 2 280 300 240 Civitan park 1 0 0 0 SUMMARY OF CONTRACTION AND EXPANSION COEFFICIENTS River: Salem Creek Reach River Sta. Contr. Expan. Civitan park 8 .3 .5 Civitan park 7 .2 .4 Civitan park 6 .1 .3 Civitan park 5 .1 .3 Civitan park 4 .1 .3 Civitan park 3 .1 .3 Civitan park 2 .2 .4 Civitan park 1 .3 .5 Page 15 HEC-RAS Plan: Civexistbnk River: Salem Creek Reach: Civitan park ?_??, ?'m'Ri+Sta 'sP e'='s:, ,::?QTotal ' .;7vi'?h`G ?I ?,;W.SjEleda> - E:G.;t=1e ?,V nl She r.C an" ? H, dr ? ? E:G t Pq e?G'a?;;; . q.(Cfs} : (ft) - (h7h i- (ft?h; =?f[Is)'. ' ?lklsg ft}` a s_ ?)_ r , .i.;?? s Qb fl s} z } 9 ?_ ? park 8- barjkful?r Ciyita n 800.00 _ 749.00 -r, 53.97 754.39 5.20 0.63 3.58 058 0.48 3.28 itan per4? IS ? .- ? s'?s? PF 2 x Cv 1350.00 749.00 755.67 756.20 5.85 0.72 4.84 0.002 654 0.47 4.23 s PE ?a Civitan park t8 , w c 1800.00 749.00 756.90 757.45 5.96 0.76 4.59 0.002894 0.49 4.53 ? i CIv tan park 18 !. : PP"+ Civitan park8; tL; 2150.00 3000.00 749.00 749.00 757.71 759.22 758.28 759.88 6.04 6.51 0.75 0.82 5.26 6.48 0.002504 0.002241 0.46 0.45 4.52 5.31 ? p Cfvijan park 7 800.00 746.50 753.75 754.09 4.68 0.51 3.57 0.002521 0.44 2.39 4C s Civ?tar park 7_ 1350.00 746.50 755.50 755.92 5.21 0.57 4.96 0.002063 0.41 2.98 Croitamparic 7;j 4 1800.00 746.50 756.72 757.20 5.55 0.62 5.88 0.001895 0.40 3.42 Cfvitanpark} 7 rE 2150.00 746.50 757.53 758.05 5.82 0.66 6.48 0.001848 0.40 3.82 Cjvita'h•paric? 7;,? s : P 3000.00 746.50 759.07 759.66 6.28 0.73 7.58 0.001777 0.40 4.58 Crvitan pa yt, 6' 800.00 746.80 753.00 753.26 4.11 0.37 4.24 0.001470 0.35 1.51 C yitari park 6 P 1350.00 746.80 754.84 755.19 4.75 0.45 5.55 0.001404 0.36 2.15 Civ(tarj park r; 6' 1800.00 746.80 756.09 756.50 5.14 0.51 6.40 0.001376 0.36 2.60 Crvitan pa & ter. 2150.00 746.80 756.90 757.36 5.43 0.55 6.96 0.001385 0.36 2.99 Cr`vi?an parity' ' 3000.00 746.80 758.48 759.00 5.89 0.61 8.33 0.001297 0.36 3.61 Ctvitap; a 800.00 746.30 752.39 752.68 4.30 0.40 4.61 0.001511 0.35 1.70 -i'' - 1350.00 746.30 754.19 754.60 5.16 0.53 5.96 0.001597 0.37 2.73 aa' 1800.00 746.30 755.40 755.90 5.69 0.62 6.83 0.001650 0.38 3.51 vifa 2150.00 746.30 756.17 756.74 6.09 0.69 7.35 0.001733 0.40 4.22 GIV ,p 3000.00 746.30 757.61 758.36 6.98 0.88 8.29 0.001963 0.43 6.11 Civita 800.00 744.30 752.10 752.26 3.19 0.20 6.01 0.000618 0.23 0.65 Civt Wpq 1350.00 744.30 753.82 754.09 4.17 0.33 7.35 0.000847 0.27 1.37 e' iterl _ 1800.00 744.30 754.97 755.33 4.78 0.42 7.80 0.001031 0.30 2.02 Gi ita p 2150.00 744.30 755.71 756.12 5.18 0.49 8.09 0.001157 0.32 2.54 Cntitap 3000.00 744.30 757.17 757.64 5.70 0.58 8.79 0.001262 0.34 3.29 C?wfan pa. , 800.00 744.70 751.71 752.07 4.84 0.51 4.58 0.001953 0.40 2.45 Civrtan par'n,,?,t g 1350.00 744.70 753.28 753.84 5.98 0.73 5.54 0.002344 0.45 4.34 DWa `pail t?7a 3.; b; w4 1800.00 744.70 754.34 755.01 6.56 0.90 4.92 0.003217 0.52 5.92 NEC-RAS Plan: Civexistbnk River. Salem Creek Reach: Civitan Park (Continued) Reach j River Sta ,t Ptofat ` {"y Q Total Miri Ch E( Elev`, ?E G, Eiey s,sVet Chnl =y? Shea hard y ' ,Hyd nDe h k Ro ha (fllsj', (Ib . vitan park 61 3 P F4 .. '* 2150.00 744.70 755.07 755.78 6.78 0.95 5.13 0.003236 0.53 6.44 Civitatt park « ?3 P 3000 00 744.70 756.55 757.30 7.02 0.98 5.72 0.002963 0.52 6.87 . . Civitan park''; ; 00 800 746.00 751.47 751.77 4.37 0.41 4.35 0.001618 0.37 1.81 . Cwitan park 2 s yet 1350.00 746.00 753.04 753.48 5.37 0.57 5.66 0.001735 0.40 3.07 Civit?n pa'tk 4," r 1800.00 746.00 754.03 754.60 6.06 0.70 6.46 0.001865 0.42 4.24 CWitanpark ? 2150.00 746.00 754.71 755.37 6.53 0.79 7.00 0.001952 0.44 5.17 Gta p rk 3000.00 746.00 756.18 756.92 7.09 0.89 8.14 0.001895 0.44 6.30 T, Y: Civitan park' 800.00 745.50 750.64 751.09 5.39 0.66 3.77 0.003001 0.49 3.56 v?fan"park C !? 1 1350 00 745.50 752.13 752.77 6.43 0.86 4.92 0.003002 0.51 5.53 i t . Civitan'parfc AN 1" 1800.00 745.50 753.06 753.85 7.18 1.02 5.80 0.003005 0.53 7.29 ' Crvltan park ,_ j> ;1 2150.00 745.50 753.69 754.60 7.69 1.13 6.44 0.003001 0.53 8.66 ? 3000.00 745.50 755.00 756.13 8.70 1.36 7.74 0.003004 0.55 11.79 2 HEC-RAS Plan: Civexistbnk River. Salem Creek Reach: Civitan park Reach e Sta t°`Pro le'a, RVt -Q-Total"± ?, Ch , ?°N1Sr.Elev ; rttWS YE?ev'' G'Slope° h 8 1 w.Ar'e"? ` ? to r'Frou(ie#Cfil . _ r< <rt¦+? '1 i :' ?? ? s ?? v i ? (cf5) ? . , }, ??' (n) d ., 't,` a v (ft) - : r'. ?.?i ?h) t ?? ? ?' (ft) _ ,.. '., .l . ?(fUft? s?f(l ? 1 :-. (sq?ff ft . y.. r ?? ,? 'fi '^'? ? .k ?_ ? ?? fiti b nkfull CJVitan park • (8 a - , •? . 800.00 .. . . 749.00 .t s. ? 753.97 ; ; 752.38 a ..:, ?„, 754.39 0.003058 - 5.20 f 153.78 _ 42.94 : n. 0.48 ,?, Ci0an `park 8 Y, t, 1350.00 749.00 755.67 753.48 756.20 0.002654 5.85 230.89 47.74 0.47 Cwitanpark?Br 1800.00 749.00 756.90 754.20 757.45 0.002894 5.96 302.15 65.77 0.49 Civitari,park g . t 2150.00 749.00 757.71 754.71 758.28 0.002504 002241 0 6.04 6 51 356.03 532 21 67.63 202 79 0.46 0 45 Givtta?'park 3000.00 749.00 759.22 755.93 759.88 . . . . . Civttanparki74 b 800.00 746.50 753.75 752.08 754.09 0.002521 4.68 171.02 47.92 0.44 Can parka 1350.00 746.50 755.50 753.02 755.92 0.002063 5.21 258.98 52.21 0.41 Civitanatk ; ;7: 1800.00 746.50 756.72 753.68 757.20 0.001895 5.55 324.27 55.13 0.40 Clvitan ark 7 00 2150 746 50 757 53 754 13 758.05 0.001848 5.82 369.65 57.07 0.40 p . . . . Civitan°park ;F 7 3000.00 746.50 759.07 755.18 759.66 0.001777 6.28 610.65 264.91 0.40 C vitae 6 800.00 746.80 753.00 750.56 753.26 0.001470 4.11 194.87 46.00 0.35 Clvitan p 6 "x 1350.00 746.80 754.84 751.59 755.19 0.001404 4.75 284.22 51.22 0.36 F '...,f Ctylta? park 4 y 6 1800.00 746.80 756.09 752.31 756.50 0.001376 5.14 350.43 54.77 0.36 Ciyjjan`paE}c . " 2150.00 746.80 756.90 752.82 757.36 0.001385 5.43 396.22 62.91 0.36 Civa" 3000.00 746.80 758.48 753.90 759.00 0.001297 5.89 681.52 267.19 0.36 800.00 746.30 752.39 749.85 752.68 0.001511 4.30 186.21 40.38 0.35 Stve a 1350.00 746.30 754.19 750.90 754.60 0.001597 5.16 261.76 43.91 0.37 j a 1800.00 746.30 755.40 751.66 755.90 0.001650 5.69 316.55 46.38 0.38 CM0 a . " 2150.00 746.30 756.17 752.19 756.74 0.001733 6.09 352.80 47.98 0.40 a 3000.00 746.30 757.61 753.37 758.36 0.001963 6.98 508.33 304.94 0.43 C Eta ,par 800.00 744.30 752.10 747.86 752.26 0.000618 3.19 250.71 41.71 0.23 Civitppn.ParK 1350.00 744.30 753.82 748.98 754.09 0.000847 4.17 323.60 44.01 0.27 C "? tyitan? UM! 1800.00 744.30 754.97 749.77 755.33 0.001031 4.78 376.93 48.34 0.30 C?vtta ""p? ark a 2150.00 00 00 744.30 744 30 755.71 17 757 750.32 50 751 756.12 757 64 0.001157 001262 0 5.18 70 5 439.07 757 35 114.07 387 41 0.32 0 34 n pa Cjvl . 30 . . . . . . . . . lmiii MW ?, ? ?? ? M M M M M M M M HEC-RAS Plan: Civexisthnk River: Salem Creek Reach: Civitan park (Continued) _. Ri 5t" .rofile' r Q;Total<= Reach ve ' ? ? _? ';1 ? ? ^ -? ':Min Ch E -• '°W S`Ely ? ' Cnt S'r A _ ?? ? -:E°GEIeVr ?? y> io Vel`.C 'nl Flovt°Ar" (a th`": r • Frond 'ChIX t ,? ? ?,.. 1 s'9r. R ! d ;„f ? ? (cfs) ?c:? ;? ?.{?, .?Y.X ' r >(ft) ; I ? (ft)'?? r,:? . ?, (ft)ac;s Y: ?! { -`?".,'{ft)' ? ., ?:?!.?:{ftlfk r? . ray. u"r` ,{ft/s} {sqS {ft) +;t, ? ' ?,.:;fat? s,,.,:. 00 s ban ful800 CMtan parka 744.70 751.71 74 9.13 752.07 _ 0.001953 4.84 165.24 36.07 0.40 N . " Ctvitan park "i 1350.00 744.70 753.28 750.43 753.84 0.002344 5.98 225.81 40.76 0.45 Civitan?park •r aS 1800.00 744.70 754.34 751.32 755.01 0.003217 6.56 274.55 55.79 0.52 Ciwtan park 2150.00 744.70 755.07 751.92 755.78 0.003236 6.78 317.18 61.87 0.53 Civitan park 1r 3. 3000.00 744.70 756.55 753.24 757.30 0.002963 7.02 522.36 312.21 0.52 Civ_?tan.park 800.00 746.00 751.47 749.18 751.77 0.001618 4.37 184.04 43.57 0.37 Civitan park 1350.00 746.00 753.04 750.21 753.48 0.001735 5.37 255.36 47.38 0.40 Civ?tan,par? 1800.00 746.00 754.03 750.93 754.60 0.001865 6.06 303.58 49.79 0.42 Civitawparkll ' 2150.00 746.00 754.71 751.45 755.37 0.001952 6.53 338.12 51.44 0.44 CivltaR 1 3000.00 746.00 756.18 752.56 756.92 0.001895 7.09 593.17 242.82 0.44 Clyjtan'` a 800.00 745.50 750.64 749.06 751.09 0.003001 5.39 148.63 39.99 0.49 Civitat} p 1350.00 745.50 752.13 750.13 752.77 0.003002 6.43 211.85 44.63 0.51 Civltam a 1800.00 745.50 753.06 750.89 753.85 0.003005 7.18 258.86 53.20 0.53 u'Mtan;p8r 2150.00 745.50 753.69 751.44 754.60 0.003001 7.69 293.32 54.92 0.53 Cfvrf n? akl 3000.00 745.50 755.00 752.61 756.13 0.003004 8.70 467.29 204.64 0.55 NFC_RAS Plans Civexisthnk River Salem Creek Reach: Civitan Dark Reach Rivet1Sta Pro e ? ?tE G El it ? .;. "` FEW S 1EfeV??'{ `'? '?'?_`"i 4 VVe??Heac W1" """"_'"_ •`_' ' tctn Loss 4"`i""' { L9s e ' e _ _,i, ? ?.1 P?wd h . E.? e, jar:.. ,, ` i - --. r '" ' : (ftj ' t - ` {ft), t f _ tft} r ?fk) - f?ft} {cfs} (efs) a ? C / , :t' r , ; a CMtan,park ja 8 n full 754.39 753.97 0.42 0.26 0.04 800.00 42.94 Chita prk? B ; 756.20 755.67 0.53 0.22 0.05 1350.00 47.74 Civ(tan'park, 757.45 756.90 0.55 0.22 0.04 1800.00 65.77 Civitzl?parhltl 758.28 757.71 0.57 0.20 0.02 2150.00 67.63 Civitan pa ft 8 759.88 759.22 0.66 0.19 0.03 0.41 2999.59 202.79 ?? 754.09 Cwitanp'a?lh? 753.75 0.34 0.79 0.03 800.00 47.92 ? Givitanparkx'k(T '? 755.92 755.50 0.42 0.71 0.03 1350.00 52.21 Civita p r Y' 7; 757.20 756.72 0.48 0.67 0.03 1800.00 55.13 758.05 Clvitan parlct?:. 757.53 0.53 0.67 0.03 2150.00 57.07 Clvitan pa+r -' 759.66 759.07 0.59 0.63 0.03 109.65 2890.35 264.91 Civi an'pa ., 753.26 753.00 0.26 0.58 0.00 800.00 46.00 Civitan p r 755.19 754.84 0.35 0.58 0.01 1350.00 51.22 Giv t a 756.50 OUNEWMI 756.09 0.41 0.59 0.01 1800.00 54.77 Chita ., ?a 757.36 756.90 0.46 0.60 0.01 0.03 2149.97 62.91 i 759.00 758.48 0.52 0.62 0.02 128.13 2871.87 267.19 752.68 752.39 0.29 0.38 0.04 800.00 40.38 Civia a 754.60 754.19 0.41 0.46 0.04 1350.00 43.91 Giver , 755.90 755.40 0.50 0.53 0.04 1800.00 46.38 ? "'ta 756.74 756.17 0.58 0.58 0.05 2150.00 47.98 x a 758.36 757.61 0:75 0.64 0.08 37.61 2962.39 304.94 y a .; , 752.26 752.10 0.16 0.17 0.02 800.00 41.71 C 754.09 753.82 0.27 0.22 0.03 1350.00 44.01 ty} `?atk 755.33 754.97 0.35 0.29 0.03 1800.00 48.34 7 1 Civitan park 756.12 755.71 0.41 0.31 0.03 10.25 2139.75 14.0 i HEC-RAS Plan: Civexisthnk River. Salem Creek Reach: Civitan park (Continued) ? M M M M Reach River Sta °. Pro ?? rf E G ?lev, 4 EW?SIev Vel Heed ? Frctn Lases &' h.4os Q L _ 5 p t> ? ?'±?,-?? f. ? ,;. (ft). ? . ? -F 4 ? Cft t) (ft) . ( ); -•--; ----? Ctvitan pars ,14 757.64 757.17 0.47 0.32 0.03 161.76 2802.03 36.21 387.41 Civit? paC 3q" "' 752.07 751.71 0.36 0.28 0.02 800.00 36.07 Civi pafky 3'3 753.84 753.28 0.55 0.32 0.03 1350.00 40.76 Ci 'itan'pa ,1a, 3 755.01 754.34 0.67 0.39 0.03 1800.00 55.79 Glvitan+pa??' 755.78 755.07 0.71 0.40 0.02 2150.00 61.87 Pmtorf R r' 757.30 756.55 0.75 0.37 0.00 25.47 2930.05 44.48 312.21 C(yl?an,ga. 751.77 751.47 0.30 0.65 0.03 799.40 0.60 43.57 Cjyktanp 753.48 753.04 0.45 0.67 0.04 1345.72 4.28 47.38 . 754.60 Glvi!aW I 754.60 754.03 754.03 0.57 0.57 0.70 0.70 0.05 0.05 1790.57 1790.57 9.43 9.43 49.79 49.79 Cwltart 755.37 754.71 0.66 0.72 0.05 2135.36 14.64 51.44 756.92 Civitan; V 756.18 0.73 0.70 0.08 91.10 2815.92 92.98 242.82 x. e 751.09 750.64 0.45 799.92 0.08 39.99 752.77 752.13 0.64 1347.89 2.01 44.63 753.85 753.06 0.80 4.49 1790.26 5.25 53.20 75, 753.69 0.91 12.80 2128.50 8.69 54.92 `t (;? 756.13 755.00 1.13 84.07 2896.44 19.49 204.64 t n CIVITBnk.rep Warning:Divided flow computed for this cross-section. River: Salem Creek Reach: Civitan park RS: 5 Profile: bankfull Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 5 Profile: PF 5 Warning:Divided flow computed for this cross-section. River: Salem Creek Reach: Civitan park RS: 4 Profile: bankfull Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 4 Profile: PF 2 Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 4 Profile: PF 3 Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 4 Profile: PF 4 Warning:Divided flow computed for this cross-section. Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 4 Profile: PF 5 Warning:Divided flow computed for this cross-section. Warning:The conveyance ratio (upstream conveyance divided by downstream conveyance) is or greater than 1.4. This may indicate the need for additional cross sections. River: Salem Creek Reach: Civitan park RS: 3 Profile: PF 5 Warning:Divided flow computed for this cross-section. River: Salem Creek Reach: Civitan park RS: 2 Profile: PF 5 Warning:Divided flow computed for this cross-section. less than 0.7 less than 0.7 less than 0.7 less than 0.7 less than 0.7 less than 0.7 . Page 19 Civitan Park - Exist. Cond. Bankfull 06/18/2001 Civitan park A Legend 3000 cis • ..................:.........:.........:........ •----...............----•-•--:.........:_-•••. ................................................. ................................................. ........................... ....... 215 cfs ' ----....:_ ...........-•-••••-- •••---•--:•----• ..:_•----------................. --•-••--•'----•--- :.._.... --------------- '. :. ' 1800 d ......._i .........:....•- ? :.-------- --•------ :_..... ............................. ................................................. •-•- .................. ---- •••• ..... -•- 1350 d 760 s -------- 800 ds . .................................................. ..:. _ :. __ ....................... -•-•- --•-• .. ..: _...... ? ---- _.. .--•• ......- -•-•- --••- -••- ----••. - ---- •••- Ground 755 w 750 745 ---------------------------------- ------------------------------------------------- 740 0 500 1000 1500 2000 Main Channel Distance (ft) 1 in Horiz. = 25U tt 1 in Vert. = 5 tt Civitan Park - Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach = Civitan park XSec 1 @ surveyed sect 16 RS = 1 -10. .07 035 - A .07 -? Legend 770 - i i ----'--->----•---•L---•---- ' - = ._.... ' }----_....! .---•---•' (• -"------ } } WS PF 5 WS 4 PF } ......... --------- }-••--'••.}--------- }._.... .........' --- ....... }---------L--------- }--"--•-- --------- --------'}------_- 4......... ------ } ' } ' r WS PF 2 765 ' --------- --------t•-----•-•r-•-------i--------- ---•-•---F-••--•---F--------'f--------- --------- --------- f F }... ...•--•t•--""----}-. WS bankfull .... .............. }.._..__..}--------- }......... .................... --------- }-------------------- ---------- --------- }--------- }......... --------- --------- ------- -}--------- }-.•---•.-i--------- }__.....__. --------- -} Ground ---}-----....r. r.--•-•-••? -•--••---} r------••-r "'•-•---}-•---•--- - }- }- --------- --------- (-•---- •-(-•---•"-r --------- --------- r.........}_. Bank Sta ------ '•}-•----•--}'---'----}.........} ......... .........}.................... }--------- }--------- ...---._.F--------- }--------- }--------- }--------- - ---•' ---- -•}-°•^-^}--------- }--------- --------- --------- 760 C } }---...---}•--• ..... ......... . }-•--•-•-.}------•--}--•-----•}--._----- --------- :-.... --•-•}--•---...}........ ......... .......... }----- --- --------- }--------- }................... }•--------}-• , d W .........}. ...... }......... }.................... .......... }......_..L.........}.........}....•.-.. ------...L--..._..-}--------- }--------- }--------- --------- ---- ---- }--------- }--------- }................... ?•--------}.. 755 ...--• ................... ......... ......... .......... y.. -------}--------- ---- --- F-------- --- - F ? F }• f -------- --------- --------- --- ----- --- -• ------ i.. --- -- -- - _....._. _.__.._..r ......... ......... .._._.._. .. 750 ........! -••----- ------ ---•--- -----•-- ..... ---•--•-- •-•--••- •-•------ --------- _._......}.........}.........i.----•---}--....•_- --------- '------------------- '------ .._} ......... ......... .........!--------- ......... '..._ ----. ..." -----"- - ..... ..... .__....... ?..._.....! ......... .......•_' ......._ .-...---' ....._..-!.--------- •-------- ........' ' ...._....' ' . 745 0 10 0 20 0 30 0 400 Station (ft) 1 in lion. = b0 tt 1 In ven. = 6 it Civitan Park - Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 2 Surveyed Sect. 15 RS = 2 - .07 035 .07 Legend :....-.__.i....--•- ••--•---- ---•----- • ................ :.----._..:. 765 WS PF 5 - . .......................... ................................................ ........................ ------ ...... ._... ............................. ................... -• W .......:......... ......•--.•--------.-•--•-•--.--••-•-- ----- ---- .--• ..................... ........................ WS PF 3 ......... ....................................... _.._.. . ._•. --•-• -•-•- -- WS PF 2 • ...:...............•••- ......... .............. ............. --••-•• ............................. .......... WS bankfull 760 : : : : : ¦ Ground ---- - ... .. -.. ......... .. :......... - •----•-- ......... • .............•.... ---- .._.._.._.... ............... ----. .......... ....................................... •-•-.. Bank Sta --------- 755 t-- - i ---- ...... ..... --•-- -•--- --••.. .... •-- ... .............................................. w ---- -•... ••-- ---- -••• ..... •--• 750 745 1000 1100 1200 1300 Station (ft) 1 in Honz. =butt i in ven. = b.uiaoos n ?¦¦ l i l i i i i i i i i i i ? s ? ? ? ? ? ? i ? M S M M M Civitan Park- Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 3 @ Surveyed sect 13 RS = 3 .07 035 07 • .................. ....................................... ........................................... -•••- •••--•-•••----• ................................................. ...... Legend ---•------ -------------------:---•-----:----•----:-----•-•- -----•---:----------------- ----- -•-- ---•- -•-•-• ------ ---• .--- ----- -•-•- -•-•-- -•--• ---- --------------- WS PF 5 :.........:.. :_.._...................................................... ,f- - -. - WS PF 3 765- WS PF 2 ........... -•--•---•:-•--•••- : .........:....... .........:.. ........... ..................................... ........................... WS bankfull - ------------ ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- --------------- . Ground Bank Sta 760 -------------- o _ ........... .................... •••-•-•-••••-•--•- .......... .......... .......... .......... .. . .......... ......... -•--•-•-•--.................. .......... .......... . ........ ................. . .......... ..... . . . . . . . . . . ----•-----•- ........ •--- ---- w 755 A T: . 750 ............ ........ ---------------------------------------- 4- -----•-- ------------------ -•-------•-•--------- ---• ................................ ............ •••-•• ---- •_... •-••- 745 900 1000 1100 1200 1300 Station (ft) 1 in Honz. = 5o n 1 in Vert. = 5 tt Civitan Park - Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach ='Civitan park Cross Section 4 @ Surveyed sect 12 RS = 4 07 CIF .035 .07 --- Legend I......... ' --•----•- ---------' --------------------- ---------- •-- ............................................. •--------;--•••--••;..•------;.........;------- - ----- --°. •••• -••••• -- WS PF 5 'OF 4 WS WSPF3 765 i • •--•- ---- ............................. ....... ;--------- ......... ........•, ? --•;-•-----•-' i ---------;---•--••-;•-•------;---------;-----•-•- ------- -;------ •-•- --•- ------ Ground . . ...;.--- -- . ---•--- ......... ;......... ---------- ---------- ---------- -----•--- --------- -------- ; ------ ....... •--------;----•----;-------•-;•-------- - Bank Sta 760 ?. -. ----- -----• . ---• ` . .................. .-- -. 0 4 ---------- ......................... w 755 .•-• ---- -•••.. -••• --•- •--- --.- ------• -•-- ............................. -•-• --------- 750- ......... --------- ------------------- --------- --------- ............................... ............................. -••• •-•---• . --------- ; ................ +--------- ? ------ --------- ------•- ; -- -•-- -;------••-? ; -. ----- ----- ---- ..... ------. • 745 --------- 800 900 1000 1100 Station (ft) 1 in Horiz. = 50 tt 7 In ven. = b n -9111111111101 wr . i? iiiw w w w w ? Iw w w Iw I? I• M M Civitan Park - Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 5 @ Surveyed Sect 8 RS = 5 07 .035-- .07 Legend 770- -- - WS PF 4 ? i i i i WS OF 3 WS PF 2 765 WS bankfull Ground • Bank Sta . , --......-:- .... ......... ..... 760 , _..... .... ..... ................... ..._. o ---- --•- ---•-- •----- ------ .. ------- ---- --•- •-•-- --- - --------- .................... . ......... ........... ,.. ;......... '......... S ••. ---- W 755 750 600 800 1000 1200 1400 Station (ft) 1 In Hong. = luu Ti 1 in ven. = o Ti Civitan Park - Exist. Cond. Bankfull 06118/2001 River = Salem Creek Reach = Civitan park Cross Section 6 @ Surveyed Sect 7 RS = 6 07 A( .035 ---- .07 -? -- - - - - Le g e ncf 770 i . ......... .........i--...... ' ................... i .............................. ••... --.---• = = ?. -..__. ..-- ----- •--- -- ----- -- ----- -- ------- ---- -•--- WS PF5 i i VV - -•- --•-- -- W-, WS PF 2 765 WS bankfull .. d ................ ....... ' -------------------- ---------- ....... ' ....--• •••-•- ......... • ........... ....•••- -- .......... ................... ................... -__-- -•--- ---•• ......... ......... .......... ..-•-• --•-- ......... ..... . ....... ---•- •---. ----. .......... . •----• ----• - - • Bank Sta 760 0 ? 4 ? W •-•-- ..-•- ......... •-••- --• ........ 755 750 700 800 900 1000 Station (ft) 1 in Honz. = 5u n i in Vert. = o rr ?? .? !• fA 1• ? f1? ? i1i? i ? ? i? ? ? ? ? ? Civitan Park - Exist. Cond. B ankfull 06/18/2001 River = S alem Creek Reach = Civitan park Cros s Section 7 @ Surveyed Sect 3 RS = 7 07 .035 .07 - ? - Legend 770- WS PF 5 ....................... .............. •------•-----.--•----• ---•- •--- ---- ---- ---- ---••-- ---- .--- ............................. ................................................. WS 'OF 4 . ........................ ---•-•--- -•------ :----•-••-:-•---•-- :... ------ '--------- ' ------ --•- ............................. ........ --------------------- •••• . ---•----• ......... ......................................... I--•-••... ....__--•:-••-•---•:...._.. ...•• ••-- ................... ---• ................... ---- --... •-•- 765 WS bankfull ------•• --------- ---------------------------------------- ------------ ------------------------------------- ---- ---• -------------------------------- ----• ..... ..... Ground Bank Sta - 760 ------------------------ R -------------------------------------------------- -------------------------------------------------- ------------------------------------------------- --------- -------- c ---- ---- ---- ---• ---- -•-• ...... .... 0 % 755 750 100 200 300 400 500 Station (ft) 1 to honz. = ou Ti 1 in vert. = o Ti A0-7111111111111111t M? i >?1 ?¦¦ i ! I? li IIIIIIIIIIIIIIIII I? IIIIIIIIIIIII? Civitan Park - Exist. Cond. Bankfull 06/18/2001 River = Salem Creek Reach = Civitan park Cross Section 8 @ Surveyed Sect 2 RS = 8 e 07 035 --.07 10. 10 . a 9en . -•.... ....• ---•- -•--- •. ..-•- WS PF 5 770 .. ; ...... WS . , .....- ............................ ...... S OF 3 P : ................•. -•-•......•-•-••---'------•-- ----------------------------- ---•------------ •---• .................... ......... -----• ------------ ----- •-••- •_...- -- WS bankfull } 765 Ground :.. ?. :.. .......... • •-•-- • . ........... .......... ......... ......... .... Bank Sta 760 ----- ...... ...-•- A ---•- -• -••-- ...•• ••-•-- .......... .... .. w i 755 ---------- ------ 750 100 200 300 460 500 Station (ft) 1 in Horiz. = 50 tt 1 in Vert. = 5 n t / Mao Kev Eroding Bank Sediment Bar Jift Debris Jam Distribution Tower Transmission Poles i Sanitary Sewer . _?- Water Main / Existing Trees Proposed ChaaaelslwQ Ponds wetland Impact Areas ' Stream Channel Impact Areas e P n 0 Yv 9 I 1G ti\ Stadium Branch Drainage Swale Civitan Park a \ FoGSBaa\ I I tia. a.. Trail Parking Lot CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 Designed: R. Powell 11/02 Drawn: R. Powell 11/02 Park View Street Salem Creek- Civitan Park Stream Restoration wedand and stream Impact Areas Scale: 1 in. =100 R Civitan Park -Landfill 74 Drainage Swale Landfill,_ , N? ? L Drainage Swale N d w v7 d a Man Kev Eroding Bank Sediment Bar 46- Debris Jam Distribution Tower Transmission Poles • Sanitary Sewer _?_.? Water Maio Existing Trees Proposed Channek/WQ Ponds , . Wetland Impact Areas i Stream Channel Impact Areas Foot 1\ Parking Lot Park View Street .da CLEAR CREEKS CONSULTING Piro* 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692.2164 Designed: R. Powell 11102 Drawn: R. Powell 11102 Salem Creek - Civitan Park Stream Restoration Wetland and Strum Impact Areas Scale: 1 in. =100 ft. Unnamed Tributary PERMITTING DOCUMENTATION WETLAND AND STREAM IMPACT AREAS `Q?pF W ATF9?G f Michael F. Easley, Governor William G. Ross Jr., Secretary q North Carolina Department of Environment and Natural Resources p Y Alan Klimek, P.E., Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality August 7, 2003 DWQ # 03-0885 Forsyth County CERTIFIED MAIL - RETURN RECEIPT REQUESTED City of Winston-Salem Attn: Keith Huff Storm Water Department Post Office Box 2511 Winston-Salem, NC 27102-2511 Subject Property: Civitan Park Stream Restoration Project Dear Mr. Huff: On July 16, 2003 the Division of Water Quality (DWQ) was notified by receipt of your application regarding your plan to fill waters for the purpose of stream restoration in Forsyth County. Approval from DWQ is required to disturb these areas. Please provide 7 copies of the following information and refer to the DWQ # listed above in your reply. Please show these on maps of suitable scale (for instance 1" = 100 feet) so we can begin to determine your projects' compliance with 15A NCAC 2H.0500. 1. Please fill out the attached Morphological Measurements Table and Stormwater Wetlands worksheet. Please note that all of the information requested may not apply. 2. Please send 6 additional copies of the Design Report. Please telephone Todd St. John at 919-733-9584 if you have any questions or would require copies of our rules or procedural materials. This project will remain on hold as incomplete in accordance with 15A NCAC 2H .0505(c). The processing time for this application will begin when this information is received. If we do not hear from you by writing or by fax at (919) 733-6893 within three (3) weeks we will assume you no longer want to pursue the project and will consider it withdrawn. Program JRD/bs cc: Winston-Salem DWQ Regional Office Raleigh Corps of Engineers Central Files File Copy molw, NNUENR N. C. Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) (919) 733-1786 (phone), 919-733-6893 (fax), (http:l(h2o.enr..que.ne.iWncwetlands) Customer Service #: 1-877-623-6748 .,an Detail Incomplete L3 Please provide a location map for the project. 7 Z of ?? Z3. Please show all stream impacts including all fill slopes, dissfpators, and bank stabilization on the site plan. a Please show all wetland impacts including fill slopes on the site plan. ? please indicate all buffer impacts on the site plan. ? Please Indicate proposed lot layout as overlays on the site plan. b ? 0 8gc ? 'please indicate the location of the protected buffers as overlays on the site plan. ?, Please locate all Isolated or non-Isolated wetlands, streams and other waters of the State as overlays on the site plan. ? Please provide cross section details showing the provisions for aquatic life passage.. ? Please locate any planned sewer lines on the site plan. ? Please provide the location of any proposed stormwater management practices as required by GC ? Please provide detail for the stormwater management practices as required by GC ? Please specify'the percent of project Imperviousness area based on the estimated built-out conditions. •Q Please Indicate all stormwater outfalis on the site plan. ? Please indicate the diffuse flow provision measures on the site plan. . ? Please Indicate whether or not the proposed impacts already been conducted. Avoidance and/or Minimization Not Provided o The. on the plans does not appear to be necessary. Please eliminate the or provide additional Information as to why . It is necessary.for this project ? This Office believes that the labeled on the plans as can be moved or reconfigured to avoid the Impacts to the Please revise the plans to avoid the Impacts, This Office believes that the `laaefcurl on the plans ai can be moved or reconfigured to minimize the Impacts to the Please . revise the plans to mlydmize the Impacts. The stormwater discharges at the location on the plans labeled will not provide diffuse flow. through the buffer because Please revise the plans and provide calculationsto show that diffuse flow will be achieved through the entree buffer. If It is not possible to achleve. diffuse flow through the entire buffer then. it may be necessary to provide stormwater management practices that remove nutrients before the stormwater . can be d1s6harged through the buffer. ether I . , The application fee was insufficient because over 150 feet of stream and/or over 1 acre of wetland impact Was requested. Please provide $ This additional fee must be received before your application can be reviewed Please complete Section(s) on the application. Please provide a signed copy of the application. Please provide copies of the application, copies of the site plans and other supporting Information. Ngaflon of compensatory mitigation Is required for this project. Please provide a compensatory mitigation plan. The plan must conform . to the requirements in 15 A NCAC 2H .0500 and must be appropriate to the type of impacts proposed Please indicate which 404 Permit #is USACE would use to authorize this project. J i?urr Me?? n ,M FMS ?iD S iW JV1 (VII J Carolina City of Kinston Salem, North Public Works Department 1D11 Fax T nsmittal Date: 7/17/0-3 Total number of pages, including" cover sheet: _ Z f I To: Name/Organization: N %" tar. a F LI a G 1 Fax Number: III- 7-U•_16893 - Phone Number: Subject: ? q I a&4Z% L..A From: Name: Phone Number: 33` - -z. Comments: 1 1 OI F ut. 'iii :; VINO evarf s??-c[101 Street Address: 100 E first Street - Suite 441, City Hall South - Winston-Salem. NC 27101 Mailing Address: P.O. Bax 2511 - Wieeton_fwalem, NC 27102 Telephone: (336) 748-3070 - Faz (336) 727-2361 10 39Vd WWONDiAW S-M L£Z£8PL9££ tt:SZ 6003IL11LO XW. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control}. Applicant/Agent's Signaa(ure Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) W 1401 011. JUL 12u3 W QUALI' sECTIO k Page 10 of 10 ZO 39Cd WWOMiAw S-M LEZEBPL9EE TT:ST E00Z/LT/L0 SALEM CREEK - CIVITAN PARK STREAM RESTORATION CONSTRUCTION SPECIFICATIONS PREPARED FOR PILOT VIEW, INC. AND THE CITY OF WINSTON-SALEM, NORTH CAROLINA PREPARED BY CLEAR CREEKS CONSULTING JULY 2003 Construction Specifications Project Description 2 Section 1 - Mobilization 4 Section 2 - Construction Stakeout 5 Section 3 - Maintenance of Traffic 7 Section 4 - Pollution Control 8 Section 5 - Project Dewatering 13 Section 6 - Clearing and Grubbing 17 Section 7 - Stream Channel Excavation 18 Section 7d - Special Specifications for Log/Boulder Step Pools 21 Section 8 - Floodplain Excavation/Wetland Creation 23 Section 9 - Floodplain Excavation/Water Quality Ponds 25 Section 10 - Storm Drainage 29 Section 11 - Cross Vane 33 Section 12 - Rock Vanes 35 Section 13 - Rock Sills 37 Section 14 - Asphalt Walking Trail 38 Section 15A - Special Specifications for Prefabricated Foot Bridge 39 Section 15B - Boardwalk 46 Section 16 - Seeding and Mulching 52 Section 17 - Planting Trees and Shrubs 58 Section 18 - Installing Wetland Emergent Plants 61 Section 19 - Installing Live Stakes 64 1 PROJECT DESCRIPTION 1. Scope a. The City of Winston-Salem, North Carolina proposes to restore 2600 linear feet of Salem Creek and 2100 linear feet of Stadium Branch, create a five (5) acre wetland system, construct two (2) wetland/water quality ponds, and reestablish 17.5 acres of riparian habitat in Civitan Park. b. The work consists of excavation and removal of an existing rubble landfill, excavation and fill to create new stream channels and stabilize existing channels, installation of in- stream structures to provide stream bank protection and grade control, excavation to create a wetland system, excavation and fill to create wetland/water quality ponds, extension and relocation of existing storm drain pipes, construction of trails, boardwalks, and a pedestrian bridge, installation of soil bioengineering practices, planting of native plant material, seeding and mulching for stabilization, and all necessary incidentals described and illustrated in this Construction Specification Document. c. The work to be performed under this Contract includes, but is not limited to, furnishing all materials, labor, equipment, tools, plants, seed, superintendence, transportation and performing all work in strict accordance with these specifications and drawings. d. The work shall be performed under contract to City of Winston-Salem hereafter referred to as the City and under the direction of Clear Creeks Consulting, hereafter referred to as the Project Manager. e. The work shall be completed in all its parts and ready for use in the time specified and in strict accordance with the terms and conditions of the Contract Documents. Any deviation shall be subject to the approval of the City and the Project Manager. f. The Contractor shall follow the requirements of all the permits issued for the proposed construction. g. The Contractor shall be prepared to execute a finished project in every particular without extra charge, unless specifically provided for within the contract. 2. Project Site ' a. The project site is located in Civitan Park in Winston-Salem, North Carolina along Salem Creek between Martin L. King Jr. Drive and Vargrave Street. The project shall be completed in five phases, which include: I PHASE DESCRIPTION 1 Diggs Boulevard Storm Drain ' Relocation, Stadium Branch Relocation & Floodplain Wetland Construction ' 2 Gully Repair, WQ Pond #2 Construction, & Park View Street ' Storm Drain Installation 2 i i 3 Salem Creek Restoration, Storm Drain Repairs/Extensions & WQ Pond #1 Construction 4 Trail, pedestrian bridge and boardwalk 5 Bioengineering, Wetland and Riparian Tree and Shrub Plantings 6 Wetland Emergent Plantings b. The Contractor shall perform all activities related to this contract within the Limits of Disturbance (LOD) illustrated on the Drawings. c. The project site shall be accessed through the designated access points illustrated on the Drawings. d. The Contractor shall begin work at the top of the project and work downstream until the project is completed and stabilized in accordance with the Contract Documents. END OF SECTION 3 i i i i CONSTRUCTION SPECIFICATIONS SECTION 1 MOBILIZATION 1. Description This work shall consist of the construction preparatory operations, including the movement of personnel and equipment to the project site and for the establishment of the Contractor's on-site offices, buildings, and other facilities necessary to begin work. 2. Materials Not Applicable 3. Methods All work performed in providing the facilities and services shall be done in a safe and workmanlike manner. 4. Measurement and Method of Payment Mobilization will not be measured for payment but will be paid for at the Contract lump sum price. END OF SECTION 4 CONSTRUCTION SPECIFICATIONS ' SECTION 2 CONSTRUCTION STAKEOUT 1. Description ' This work shall consist of preserving and maintaining construction layout stakes and benchmarks installed by Big Eagle Surveying and as specified in the Contract Documents or as directed by the Project Manager. ' Big Eagle Surveying surveyed the existing elevations and contours shown on the plans, cross- sections, and profiles in 2001. Existing elevations and grades may have changed since the original survey was completed due to stream erosion, sediment accretion, and fill. It is the Contractor's responsibility to confirm existing grades and adjust earthwork as necessary at no additional cost to the City. 2. Materials Not applicable. ' 3. Methods 3.1 Line and Grade Big Eagle Surveying will provide the Contractor with the following: a. Reconstructed Stream Channel Stakeout Utilizing the Baseline Survey and the Construction Plans, Big Eagle Surveying will establish appropriately spaced benchmarks and the necessary references including all P.C.s, and P.T.s for the preservation and control of the thalweg and bankfull channel alignment. ' b. Structure and Feature Stakeout Utilizing the Baseline Survey and Construction Plans, Big Eagle Surveying will set ' stakes at key points along the floodplain. These stakes will be marked with the thalweg station and denote the bed feature or structure associated with that stationing. These stakes will be utilized during construction to verify stationing of bed and structural features (i.e., top and bottom of riffles, runs and pools; and log and rock sills, cross vane sills and cross vane arm tie-in points, steps and pools, etc.). ' c. Wetland and Water Quality Pond Stakeout Utilizing the Baseline Survey and Construction Plans, Big Eagle Surveying will set ' stakes at key points along the floodplain areas designated for the wetland and water quality ponds. These stakes will be marked to denote the location of specific wetland or pond features (i.e., embankment, water control structure, forebay, marsh, micro-pool, ' etc.). Where appropriate the stakes will indicate the existing and proposed elevations. 3.2 Control Markers ' The Contractor shall exercise care in the preservation of the stakes and benchmarks set by Big Eagle Surveying. If any are damaged or destroyed the Contractor shall reset them at his own expense. t 4. Measurement and Method of Payment Big Eagle Surveying will complete the initial construction stakeout. The Contractor shall be ' responsible for maintaining all stakes' and benchmarks. Any stakes and benchmarks damaged or destroyed shall be reset by The Contractor at his expense. ' END OF SECTION CONSTRUCTION SPECIFICATIONS ' SECTION 3 MAINTENANCE OF TRAFFIC 1. Description ' This work shall consist of maintaining traffic, vehicular and pedestrian, on or along the roads within and adjacent to the project site, affected by the work. This Section sets forth the traffic control requirements necessary for the safe and continuous maintenance of traffic throughout the area affected by the work, and is intended to minimize inconveniences to the traveling ' public, while providing for the safety of motorists, pedestrians, and workers. 2. Materials ' All materials and equipment (e.g., warning and guide signs, warning lights and devices, traffic- channelizing devices, etc.) shall be furnished, installed and maintained in accordance with an ' approved Traffic Control Plan. 3. Methods ' The Contractor shall prepare and submit a Traffic Control Plan (TCP) to the City for approval, which will assure the safety of motorists, pedestrians and construction workers for the duration of the construction project. ' 4. Measurement and Method of Payment ' Unless otherwise specified, the Contract lump sum price for Maintenance of Traffic will be full compensation for all work necessary to maintain traffic. ' END OF SECTION CONSTRUCTION SPECIFICATIONS ' SECTION 4 POLLUTION CONTROL 1. Description This work shall include furnishing, installing and maintaining all measures necessary for the ' prevention and/or mitigation of impacts from pollution during construction. The work will prevent or minimize the release of sediment, dust, fuel, hydraulic fluid, oil, wastewater, or any other pollutants into the water or air from the work site. 2. Materials ' All materials furnished shall meet the requirements as set forth in each of the following subsections. All materials and/or supplies furnished for the purpose of pollution control shall be of new or good condition. ' 3. Erosion and Sediment Control Measures Control of sediment production and its introduction to the watercourse shall be prevented or ' minimized during all operations to complete the work under this contract. The following items set forth some, but not necessarily all, techniques which may be required under this contract. ' 3.1 Silt Fence for Sediment Control a. This work shall include furnishing, installing and maintaining silt fence for sediment ' control as may be required by local or state regulations. Silt fence shall be installed in accordance with the specifications shown on the plate on this Erosion and Sediment Control Sheet. ' b. All materials, construction methods, handling, and maintenance shall be in accordance with the plate shown on this Erosion and Sediment Control Sheet. Silt ' fence shall be installed prior to the disturbance of stockpiling, staging and construction access areas shown on the Erosion and Sediment Control Sheet. 3.2 Stabilized Construction Entrance ' a. This work shall consist of installing a stabilized construction entrance at all point of ingress and egress from public roads. The stabilized construction entrances shall be installed in accordance with the specifications shown in the plate on this Erosion and Sediment Control Sheet. The work will include excavation, furnishing and placing filter cloth and #2 stone necessary to complete the work, and removal of it at the ' completion of the project. b. All materials, construction methods and maintenance shall be in accordance with the ' plate shown on this Erosion and Sediment Control Sheet. 8 J d I c. Acceptable filter cloths include Mirafi MON, Dupont Typar No. 3341 or 301, Supac 5P or an approved equal. Stone shall meet AASHTO designation M43 Size No. 2 or 24. The Contractor may use a reclaimed or recycled concrete equivalent. d. Stabilized construction entrances shall be installed prior to any stockpiling, staging, and/or construction work. 3.3 Temporary Mulching a. Temporary mulching may be required when permanent vegetated stabilization of the disturbed areas will be delayed. Temporary mulching will be required when stockpiles of topsoil and fill will not be used for an extended period of time. b. Temporary mulching will be accomplished by application of cellulose hydro-mulch, chopped straw/hay, tackifiers, burlap, cellulose mat or another acceptable erosion control material. 3.4 Erosion Control Blankets a. This work consists of installing erosion control blankets on graded slopes as may be determined to be necessary by the Contractor and Project Manager. b. Erosion control blankets will be utilized if it is determined they are necessary and appropriate to maintain the stability of the graded slopes. Any erosion control blankets utilized shall be composed of organic geotextile fabric with biodegradable or photodegradable netting. Approved erosion control blankets include Bon Terra C2 Erosion Control Blankets, American Excelsior Curlex Blankets, or an approved equivalent. 3.5 Dewatering Diversion System a. During construction, temporary diversions will be required to collect and divert ' stream flow around the work area. The work shall consist of the installation of a system of pumps and pipes/hoses designed to convey baseflow pumped from an in- stream cofferdam at the upstream of the construction area to an outfall-point downstream of the construction area for the purpose of dewatering the construction area. b. All materials, construction methods and maintenance shall be in accordance with the plate shown on the Erosion and Sediment Control Sheet and as described in Section 5 - Project Dewatering. 4. Equipment Fuels and Lubricants The Contractor shall take all necessary precautions to prevent the spill of chemical pollutants including, but not limited to fuel, oil, grease, and hydraulic fluid. 4.1 Equipment Leaks a. All equipment used on the project shall be free of leaks and excessive deposits of materials such a fuel, hydraulic fluid, oil and other lubricants. 9 d I b. At the start of each workday, the Contractor shall perform a visual inspection of each piece of equipment to check for leaks. During equipment operation, the Contractor shall watch for leaks that may develop. c. In the event a piece of equipment develops a leak during construction work, the Contractor shall immediately remove the machine from the stream channel area and shall repair the leak. All excess fluids will be cleaned from the machine prior to its return to the work area. 4.2 Equipment Fueling a. The Contractor shall provide for safe fueling of all equipment within the work area. b. Under no circumstances shall the equipment be fueled within the stream channel area. 4.3 Fuel Storage a. All fuel stored on site must be in a suitable container. Fuel storage in containers greater than five (5) gallons shall be in a containment tank, which meets or exceeds NFPA Standards or other applicable local, state and federal regulations. Mobile tanks on pickup trucks and service vehicles are exempt from this requirement. b. Pumps on fuel storage units must be in good working order and free of leaks. The Contractor shall remove leaking fuel equipment from the work site upon direction of the Project Manager. 4.4 Equipment Service and Repair a. In the event that the Contractor must service or repair equipment during construction, appropriate measures will be taken to prevent contamination of the soil and/or water during the service/repair operations. b. Under no circumstances will equipment be serviced in the stream channel area. All equipment must be removed from the channel to the floodplain area for servicing. c. All waste lubricants and other chemicals will be disposed of in sealed, watertight tanks. No more than five (5) gallons of waste lubricants will be retained on site. 5. Sanitary Facilities ' The Contractor shall be required to provide adequate sanitary facilities for their work force as well as for use by the Project Manager, and Project Observers. Chemical toilets shall be provided in a quality that is consistent with the requirements of state and federal regulations. Chemical ' toilets will be placed no closer than one hundred (100) feet of the stream edge. The Contractor will provide for routine maintenance and cleaning of the sanitary facilities. 10 d I 6. Other Chemicals In the event the work requires the use of other chemicals (e.g., herbicides), the Contractor will use the chemicals in a manner that is consistent with the chemicals labeled use and the manufacturer's instructions. 7. Air Pollution 7.1 Dust Control The Contractor shall be responsible for the control of excessive dust on public roads and project access roads. The Contractor shall be prepared, at the request of the Project Manager, to suppress dust. If chemical dust suppressants are used, the Contractor shall use a commercially available product specifically designed for dust control and shall follow the manufacturer's recommended rates and methods of application. 7.2 Equipment Emissions The Contractor shall be responsible to insure that all equipment has proper and functioning emissions control equipment. All equipment will have mufflers and will be free of excessive smoke emissions. In the event the Contractor's equipment is emitting excessive smoke, the equipment will be removed from the work area and repaired or a substitute piece of equipment will be brought to the project site. The Contractor will be solely responsible for the mobilization and demobilization costs associated with replacement of any equipment that is pulled from service. 8. Maintenance, Removal and Restoration The Contractor shall maintain all pollution control measures in good operating form until such time that the measures are no longer needed. Upon completion of the work, the Contractor shall remove any temporary pollution control measures installed during construction and shall restore the site to original conditions as reasonably practical. 9. Measurement and Method of Payment 9.1 Method 1 - Unit Prices For items of work, for which unit prices are established in the contract, each item will be measured to the nearest unit applicable. Payment for each item will be made at the contract unit price for that item. Payment for chemical dust suppression items shall not be made for applications that are excessive or unnecessary. Such payment shall constitute full compensation for the completion of the work. 9.2 Method 2 - Lump Sum For items of work, for which lump sum prices are established in the contract, payment will be made as the work proceeds, after presentation of adequate invoice documentation showing the Contractor's cost. If the total of such payments is less than the lump sum contract price for that item, the unpaid balance will be included in the final contract payment. Payment of the lump sum contract price shall constitute full compensation for completion of the work. 11 9.3 Method 3 - Incidental Costs ' For items of work, for which a specific bid price is not requested, the costs shall be considered incidental to the total items of work and no payment shall be made separate and distinct for pollution control. Pollution control costs will be included in the costs of ' the other work items. END OF SECTION 12 I CONSTRUCTION SPECIFICATIONS SECTION 5 PROJECT DEWATERING 1. Description In order to meet the requirements of state and federal regulatory agencies, stream channel construction generally requires that work be completed in a dry channel condition. During construction, various techniques ranging from construction of passive by-pass channels to installation of pump diversions, are utilized to divert stream flow around the work area. Traditional riprap projects generally allow for partial channel dewatering by diverting the flow to one side of the existing channel. However, geomorphic-based restoration often involves significant channel reconstruction requiring stream flows to be diverted completely around the project. The work described in this section shall consist of the collection and diversion of surface water and groundwater from the stream channel as necessary to perform the construction required by the contract. The work shall involve the installation of a system of cofferdams, pumps, pipes and hoses designed to convey stream flow pumped from an in-stream cofferdam at the upstream of the construction area to an outfall point downstream of the construction area for the purpose of dewatering the construction area. 2. Diverting Surface Water The Contractor shall install, maintain, and operate all cofferdams, pumps, pipes and hoses and all other temporary diversion and protective works needed to divert stream flow and other surface water through or around the project site. 2.1 Diversion of surface water shall be continuous during the period that damage to the ' construction work could occur. Unless otherwise specified, diverted surface water shall be diverted to the same drainage-way that the water would have reached before being diverted. ' 2.2 The Contractor is responsible to determine the number and sizes of pumps necessary to complete the dewatering process. ' 2.3 The Contractor shall furnish the Project Manager a written detailed plan for meeting the surface water diversion requirements set forth in the contract documents. The Project Manager prior to the start of work must approve the dewatering plan, and it shall include ' information on the type, number, sizes of pumps, type and size of pipes and hoses, refueling/service schedules, cofferdam construction techniques, discharge outfall protection, and other relevant information. All proposed activities shall meet the ' conditions set forth in the North Carolina State Sedimentation and Erosion Control Guidelines or another similar, recognized specification. Acceptance of the dewatering plan, or the waiving of the plan requirements shall not relieve the Contractor of the ' responsibilities related to this activity during the process of completing the work. 2.4 The Contractor must plan the dewatering activities such that increases in water flow due ' to storms or other events are taken under consideration. No separate payment will be ' 13 ' made for dewatering measures that are damaged or overwhelmed by significant and sudden increases in the water flow. The Contractor must plan for such events. In some instances, water flows may exceed those reasonably expected to be dewatered and the ' Contractor may be required to suspend work until such time that the water flows return to a manageable level. In the event that the work is suspended due to high water, the Contractor will not be compensated for repairs to dewatering measures, but additional ' days will be added to the schedule, at no additional cost, to offset the days lost due to high water. ' 3. Dewatering the Stream Channel All work in the stream area will be performed in a fully dewatered channel. The Contractor shall ' dewater the Salem Creek channel, as well as provide for diversion of water flows into the work area from the Stadium Branch Tributary, the two unnamed tributaries, and secondary channels or drainage-ways. ' 3.1 Cofferdams and Diversions ' To capture or divert stream flows, cofferdams are used across the stream channel and secondary drainage-ways above (up-slope) from the work site. (See Standard Detail in the Erosion and Sediment Control Plans) ' a. Cofferdams will be constructed of clean, inert materials that will have a minimal impact on the stream system. Cofferdams constructed of soil or material from the stream will not be used unless specifically directed by the Project Manager. ' b. Acceptable materials shall include water structures, concrete jersey barriers, plastic barriers, and other comparable items. ' c. The Contractor is responsible to install all cofferdams/diversion structures in a safe and correct manner. Cofferdams must be installed so as to withstand the pressures ' exerted by the stream flow or ponded water against the cofferdam. d. Commercial products used as cofferdams (i.e., water structures, temporary dams) ' shall be installed according to the manufacturer's instructions. e. The Contractor is permitted to make minor disturbances to the streambed or banks as may be required to properly install the cofferdam. All disturbances will be limited to ' only that disturbance necessary to install the cofferdam. Cofferdam installation must be done in the presence of the Project Manager. f. If the Contractor uses sand bags to assist with the dewatering, the Contractor shall fill the sand bags with clean, washed sand. Soils with fine particles are prohibited. When placed in the flowing water, the sand bags shall not produce visible turbidity. ' 3.2 Pumps ' The Contractor shall use pumps and pipes/hoses to divert the water flow. The Contractor shall be responsible for providing all pumps, pipelines, hoses, fuel tanks, and other items required to pump the stream flow around the work site, and for providing supervision of ' the pumping operation during all hours that the pumps are running. ' 14 I a. The Contractor shall be responsible for calculating the required pump capacity to handle the average stream flow in the area of the work. b. The Contractor shall provide the pumps required, as well as have available additional pumps in the event that the stream flow increases, a pump becomes disabled, or to cover periods when pumps are out of operation for routine service. c. The Contractor shall provide pumps that are in good operating order and free of leaks. Pumps that are leaking fuel, lubricants, or other material, will be removed immediately from the work area, and repaired or replaced as necessary. All pump equipment will be properly equipped with mufflers and other noise suppression equipment to minimize noise impacts on the surrounding residences. d. Discharge pipes and hoses shall be reasonably free of leaks at either the fittings or in the discharge pipe/hose. No leaks from discharge lines shall be allowed to create excessively wet spots or to cause erosion. e. The Contractor shall provide adequate suction hose length to allow the pumps to be placed back from the immediate edge of the stream. £ Supplemental fuel tanks, used to minimize refueling requirements, must be installed in such a manner so as to eliminate any leaks from the fuel lines, and so they are protected from damage in the event of high water or flooding which may occur during the project. Fuel tanks over five (5) gallons in capacity will require a containment system. Supplemental fuel tanks will be placed no closer than twenty- five feet (25') from the stream edge and must be secured to prevent their movement in the event of high water. Supplemental fuel tanks must be equipped so as to prevent the escape of fuel in the event that they are covered by water during a flood condition. The Contractor is responsible to insure that all supplemental fuel storage facilities meet or exceed National Fire Protection Association (NFPA) standards or other applicable local, state, and federal regulations. g. When flooding conditions can be reasonably expected, the Project Manager shall have the authority to require the Contractor to remove the pumps and/or supplemental fuel tanks from the projected flood area. If the Contractor is required to remove pumps and fuel tanks due to flood or storm events, the Contractor shall not receive additional compensation for removal or re-installation of the pumps and/or supplemental fuel tanks. Compensation will be provided in the form of additional time on the project schedule. 3.3 Discharge Outfall Protection During the dewatering operations, the Contractor must provide adequate protection from erosion at the discharge area. The discharge of water from the pumping operation shall be done so as to prevent erosion of soils and the downstream introduction of sediment. a. When discharges from the dewatering operation involve large volumes of water, the discharge area will require a concrete and/or stone structure to provide for the dispersion of discharge energy. The Contractor shall use geotextiles as appropriate to provide erosion protection. Discharge structures must be capable of dispersing the energy of the expected discharge from the pumps. 15 b. All materials placed for the protection of discharge outfalls are temporary in nature, and shall be removed from the project area upon completion of the dewatering process. 4. Maintenance, Removal and Restoration The Contractor shall maintain all dewatering measures in good operating form until such time that the measures are no longer needed. 4.1 In the event that high flows damage or remove dewatering measures, the Contractor shall repair or replace the measures as soon as the water flows allow and prior to commencing work. 4.2 Upon completion of the work and approval of the Project Manager, the Contractor shall remove all dewatering measures. The Contractor shall remove pumps, pipes and hoses from the site, as well as cofferdams from the stream channel. 4.3 Any fill placed in the active channel during the dewatering process shall be removed ' from the channel upon completion of the work. In the event sand bags are used in the dewatering process, the sand bags will be removed and emptied outside of the active channel area. 4.4 Upon removal of the dewatering measures, the Contractor shall regrade any disturbed surfaces, remove any contaminated soils, and restore all areas consistent with the ' stabilization of the project site set forth in the Contract Documents. 5. Measurement and Method of Payment ' 5.1 Payment for dewatering of the project site shall be paid at the Contract lump sum price. The Contractor may make requests for partial payment of dewatering expenses on a monthly basis. Payment request shall. include adequate documentation of the ' Contractor's dewatering expenses, as well as a measurement of the percentage of the dewatering completed to date. 5.2 If the total payments made for dewatering are less than the Contract Lump Sum Price for this item, the unpaid balance will be included in the final contract payment. 5.3 Payment of the Contract Lump Sum Price shall constitute full compensation for completion of the work. END OF SECTION 16 CONSTRUCTION SPECIFICATIONS ' SECTION 6 CLEARING AND GRUBBING 1. Description ' This work shall consist of clearing and grubbing within the limits specified in the Contract Documents. a. Clearing within the construction area includes removing and disposing of trees, ' shrubs, and other vegetation not specified in the Contract Documents for removal and disposal. b. Grubbing within the construction area includes removing from the ground and disposing of all stumps, roots, and stubs, brush and debris. 2. Methods 2.1 Project Staging a. In order to minimize the potential for erosion, sedimentation and the degradation of water quality, clearing and grubbing will be conducted in stages. The area cleared and grubbed at any one time shall be limited to the area of active construction work. b. Unless noted in the Sequence of Construction, no areas will be cleared and grubbed until the areas disturbed during the previous construction stage have been stabilized (i.e., covered by fabric and/or seeded and mulched). The Project Manager shall have ultimate authority in this determination. 2.1 Damaging or Destroying Vegetation Beyond Limit of Disturbance. a. The Contractor shall not damage or destroy any trees, shrubs, or turf, which exist beyond the limits of disturbance as illustrated on the plans and specified. b. The Contractor shall be responsible for any and all damages to trees, shrubs, or turf located beyond the limits of disturbance that occurs from his operations during the life of the Contract. The Contractor shall fully restore, at his own expense, and to the satisfaction of the City, any trees, shrubs, or turf that have been damaged or destroyed. 3. Measurement and Method of Payment Clearing and grubbing will not be measured for payment but will be paid for at the Contract lump sum price. The payment will be full compensation for the removal and disposal of all materials cleared and grubbed, and for all material, labor, equipment, tools, and incidentals necessary to complete the work. END OF SECTION 17 I CONSTRUCTION SPECIFICATIONS SECTION 7 STREAM CHANNEL EXCAVATION 1. Description In natural channel restoration projects, primary focus is placed on excavation and grading to produce a stream channel with correct geomorphic features. During the implementation of this project, excavation and fill will be required to restore a stable plan form and channel cross- section. Excavation under this specification also focuses on the development of a stable streambed profile and will require the construction of a riffle-pool complex. a. Salem Creek Relocation/Restoration During this project the upper reach of Salem Creek will be reconstructed with a more regular planform, the middle reach will be reconstructed with a meandering channel routed along the left floodplain, and the lower reach will be maintained along its existing alignment but reconstructed with a narrower cross-section. The old channel in the middle reach will be backfilled to create a water quality pond to manage storm water runoff from the University parking lot. ' b. Tributary 1 Relocation/Restoration Stadium Branch (Tributary 1) will be relocated and reconstructed as a meandering channel ' through the wetlands created in the area where the landfill will be removed. The relocated Stadium Branch will join with the Unnamed Tributary along Vargrave Street immediately upstream of the existing trail. A portion of the lower reach of existing Stadium Branch will be ' excavated to construct the relocated Salem Creek. The remainder of the lower reach will be backfilled to create floodplain and a portion of the water quality pond proposed for that area. c. Tributary 2 Relocation The lower reach of the gully adjacent to the Winston Salem State University parking lot will be backfilled. The upper reach will be reconstructed and routed through the water quality pond proposed for the adjacent floodplain. d. Tributary 3 Relocation/Restoration Tributary 3 (i.e., the lower reach of the relocated Stadium Branch/Vargrave Street Unnamed Tributary) will be restored/relocated. This work will involve the backfilling the existing channel and construction of a series of step-pools as detailed in Section 7d Special Specifications for Log/Boulder Step-Pools. The lower section of this reach will be shifted away from the electric power distribution tower. 2. Materials 2.1 Typically, excavation of the channel form will be conducted using cuts and fills from the project site. In some instances, there may be insufficient materials on site to meet the fill requirements. In cases where additional fill is required, The Contractor is responsible for furnishing and transporting suitable fill material to the project site. 18 2.2 When the Contractor stockpiles fill material on-site, the Project Manager and/or regulatory agencies may require silt control. The requirement for silt control during the material storage ' period is determined on a case-by-case basis. The Contractor should be prepared to provide adequate silt control as provided for in the Construction Specification Section 4 - Pollution Control. ' 2.3 Along some of the reaches of Salem Creek the channel will be shifted. The shifting requires construction,of new streambanks in areas that are currently open water. To avoid placing soil in open water, The Contractor will prepare a base of shot rock upon which the soil can be ' placed. Utilizing the Construction Plans, The Contractor shall determine the yardage (tonnage) of shot rock necessary to construct the base. ' 3. Construction Methods Excavation and fill for the construction of the new channel shall be as shown on the Project ' Drawings. Construction shall be as shown in the plan view, cross sections, and the stream profile drawings. ' 3.1 The existing elevations and contours shown on the plans, cross sections and profile were surveyed in 2001. Grades and elevations may have changed since the original survey was completed, due to erosion, sedimentation, and fill. The Contractor is responsible for ' confirming existing grades and to adjust the excavation and fill as necessary to produce the desired channel configuration. 3.2 Due to the requirement to dewater the stream channels, all excavation and fill to construct ' the new channel, as well as all in-stream structures, must be done in an expeditious manner. Dewatering periods must be limited, and the stream flow returned to the new channel as soon as is reasonably possible. The Contractor is responsible to provide ' adequate equipment and manpower, as well as to establish a work schedule that will meet this requirement. ' 3.3 In areas where fill is required to establish the design channel, the Contractor shall place the required fill in a manner so as to provide adequate compaction of the material. No fill will be placed in lifts to exceed two feet (2') and each soil lift shall be adequately ' compacted with heavy equipment before placement of succeeding lifts. Coarser material, cobble, gravel, and sand will be used below the bankfull elevation. Finer material, gravel, sand, and silt will be used to complete any required fill above bankfull in the ' floodplain. 3.4 The Contractor shall be responsible for providing temporary stabilization of all graded stream banks immediately after the completion of grading, and until such time that stream ' bank vegetation stabilization measures required under this contract are completed. The Contractor shall provide interim stabilization of the immediate stream bank areas as set forth in construction specification Section 16 - Seeding and Mulching. 3.5 Immediately upon completion of all grading, and the installation of in-stream structures, the Contractor will provide permanent stabilization of all disturbed areas. 3.6 Permanent stabilization will be completed as set forth in Construction Specification Section 16 - Seeding and Mulching. 19 3.7 The Contractor shall transport for disposal soil excavated from the new channels that is either unsuitable for top dressing of the wetland system and water quality pond areas or is in excess of the material needed for backfilling of the old channel areas. The City will ' provide the Contractor with limited disposal areas at the Hanes Mill Road Landfill. No tipping fee will be assessed for the soil disposal. ' 3.8 The Contractor shall at all times conduct his work in full compliance with OSHA regulations and any other applicable local, state, and federal regulations. 4. Warranty of Work The Contractor shall be responsible for warranting his work for a period of one (1) year from the date of completion. The care and maintenance of the stream channel excavation shall begin immediately upon the completion of the project and shall continue in accordance with these specifications for a period of one (1) year. The Contractor, at the request of the City, shall 1 perform all work to repair and/or maintain channel grading, in-stream structures, and vegetative stabilization in accordance with the applicable specification, and at no additional cost to the City. n u 0 5. Measurement and Method of Payment Payment for stream channel excavation along Salem Creek will be measured and paid for at the Contract unit price per cubic yards of material excavated/placed and per ton of shot rock placed. Payment for stream channel excavation along Tributary 1 and Tributary 2 will be measured and paid for at the Contract unit price per cubic yards of material excavated/placed. Payment for stream channel excavation and installation of the step-pools along Tributary 3 will be measured and paid for at the Contract unit price per cubic yards of material excavated/placed. Payment will be full compensation for all materials, transport, excavation, and placement, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 20 CONSTRUCTION SPECIFICATIONS ' SECTION 7D SPECIAL SPECIFICATIONS FOR STEP POOLS ' 1. Description ' This section is included herein to provide supplemental information to the Contractor with details specific to the restoration/relocation of Tributary 3 not provided in Section 7. As indicated in Section 7, a series of step pool structures will be constructed on the lower reach of Tributary 3 from the culvert at the existing trail to its confluence with the mainstem Salem Creek. The ' tributary drops nearly six feet from its elevation in the floodplain upstream of the culvert to the streambed of Salem Creek over a relatively short distance and is actively eroding. Installation of the step pool structures is intended to provide grade control and reconnect the tributary with its ' floodplain. In addition, the structures will dissipate the energy of storm flows entering Salem Creek from the tributary. ' The Contractor shall furnish all labor, material and equipment required to install step-pools, as described in these Specifications and shown on the plans. This work shall consist of transporting, installing and maintaining step-pools within the stream channel for Tributary 3, as specified on ' the plans or as directed by the Project Manager. 2. Materials ' 2.1 Step-Pool Rock Step-pool rocks shall consist of angular flat rock, similar in color, texture and density to the ' native rock at the site, obtained from an approved source. The dry unit weight of the rock shall be 130 lb/cu ft or greater. The dimensions of the rock will be a minimum of 2.5 feet and maximum of 3.5 feet along the long (a) axis, a minimum of 2 feet and maximum of 3 feet ' along the median (b) axis, a minimum of 0.5 feet and maximum of 1.5 feet along the short (c) axis. Concrete and white stone will not be considered as an alternative to step pool rocks. ' 2.2 Step-Pool Logs Step-Pool Logs will be cut from trees that are removed and salvaged from the stream banks ' and floodplain along Salem Creek. The logs will be 12 - 18 inches in diameter and cut to a length of 30 - 35 feet. 2.3 Bedding Rock M Bedding rock shall consist of angular rock, similar in color, texture and density to the step- pool rock. The dry unit weight of the rock shall be 130 lb/cu ft or greater. The rock shall ' range from 0.5 foot to 1.5 feet along the long (a) and median (b) axes. Concrete and white stone will not be considered as an alternative to the bedding rocks. ' 2.4 Step-Pool Gravel Step-Pool Gravel shall consist of streambed gravel from the existing stream channel to be ' excavated and placed as a result of this Contract. If sufficient material is not available from 21 ' this site to complete placement throughout the areas shown on the plans then the Contractor shall obtain unwashed bank run gravel, ranging in size from coarse sands (.02 in.) to cobble ' (5.0 in, with a D50 - 2.5 in.). 2.5 Geotextile Liner ' A geotextile liner shall be installed along the upstream side of the logs to prevent piping and structural failure of the steps. The geotextile fabric shall have 1) Apparent opening size of 0.30 mm max; 2) Grab tensile strength of 200 lb. min; and 3) Burst strength of 320 psi min. ' 2.6 Source of Rock ' The Contractor will locate potential sources for the rocks. The Contractor and the Project Manager will visit the site(s) to determine whether the rocks meet the specified requirements for color, weight and size. If sufficient stream gravel material is not available from the site, ' the Contractor shall obtain material meeting the specified requirements as outlined above. 3. Construction Methods ' 3.1 Installation a. Step pools shall be installed according to the Sequence of Construction, the plans and details, ' and the following specifications. The Contractor shall arrange and construct step pools under the direction and approval of the Project Manager. ' b. The existing streambed shall be excavated to the general shape of the steps and pools and to a depth sufficient to allow for installation of the foundation rocks, bedding stone, step logs and rocks and gravel. ' c. Step logs shall be trenched into each bank and set so that they are resting on the streambed at the top of the log is placed at the elevation of step as shown in the Construction drawings. ' d. Step rocks for each step shall be keyed into the existing streambed along the downstream side of the step logs and along the edge of stream along both sides of the channel forming a broad ' "U" pattern to the step. The thalweg of the stream channel shall alternate from off-center left to off-center right and back to off-center left at each step in a downstream direction. e. Geotextile liner shall be draped over the upstream edge of the step log pulled to cover the ' streambed in the tail-out of the pool upstream of the log and wrapping up along the toe of bank on either side of the channel. ' f. Bedding rock and gravel shall be installed over top of the geotextile liner. g. The top of the step rocks and pool gravel shall be equal to finished grade of the steps and ' pools, respectively as specified on the cross-sections and profile. END OF SECTION i 22 CONSTRUCTION SPECIFICATIONS SECTION 8 FLOODPLAIN EXCAVATION/ WETLAND CREATION 1. Description, In wetland creation projects, primary focus is placed on establishing the three critical components of natural wetland systems, hydrology, soils, and vegetation. During the implementation of this project, excavation and removal of the existing rubble landfill and excavation and rough grading of the surrounding floodplain will reduce the depth to groundwater and reestablish hydrology to support the created wetland system. Fine grading will establish micro-topography and produce a variety of hydrologic regimes within the wetland. Placing topsoil will provide suitable substrate to establish wetland soils and vegetation. 2. Materials 2.1 Topsoil Preliminary soils testing on site indicates that the soils are sandy loam, loam and clay loam. These soils should provide a suitable substrate for establishing wetland vegetation. The Contractor shall stockpile topsoil from areas excavated on site for use as backfill dressing if the soil is determined to be suitable. Where the subsoils exposed during excavation are determined to be unsuitable, the Contractor shall place the stockpiled suitable topsoil (i.e., sandy loam - clay loam) to complete placement throughout the areas shown on the Plans and as described in these Special Provisions. If there is insufficient suitable topsoil on site to meet the backfill dressing requirements, the Contractor shall furnish suitable topsoil from an off site source. 2.2 Stockpiled Topsoil Although the requirement for silt control during material storage is determined on a case-by-case basis, when the Contractor stockpiles topsoil on-site, silt control will be required. The Contractor should be prepared to provide adequate silt control as provided for in the Construction Specification Section 4 - Pollution Control. 3. Construction Methods Excavation and fill for the construction of the wetland system shall be as shown on the Project Drawings. Construction shall be as shown in the plan view and cross section drawings. 3.1 The existing elevations and contours shown on the plans, cross sections and profile were surveyed in 2001. Although it is unlikely that floodplain grades and elevations have changed since the original survey was completed, the Contractor is responsible for confirming existing grades and to adjust the excavation and fill as necessary to produce the desired wetland configuration. 3.2 Due to the requirement to dewater the Stadium Branch stream channel, all excavation and fill to construct the new channel through the wetland system must be done in an expeditious manner. Dewatering periods must be limited, and the stream flow returned to the new 23 ' channel as soon as is reasonably possible. The Contractor is responsible to provide adequate equipment and manpower, as well as to establish a work schedule that will meet this ' requirement. 3.3 The Contractor shall transport for disposal all material (i.e., concrete, bricks, rebar, scrap metal, steel pipe, iron beams, wood, lumber, rubble, and other construction debris) excavated ' and removed from the existing rubble landfill. The City will provide the Contractor with suitable disposal areas at the Hanes Mill Road Landfill. A tipping fee will be assessed for ' disposal of the landfill debris. 3.4 The Contractor shall transport for disposal soil excavated from the floodplain that is either unsuitable for top dressing of wetland areas or is in excess of the material needed for ' backfilling of the old channel areas. The City will provide the Contractor with limited disposal areas at the Hanes Mill Road Landfill. No tipping fee will be assessed for disposal of the soil. ment urement and Method of Pa 4 M y . eas Payment for the landfill removal, excavation of clean soil, and replacing stockpiled top soil to ' construct the wetlands will be measured and paid for at the Contract unit price per cubic yards of material excavated/placed. Payment will be full compensation for all materials, transport, excavation, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 24 CONSTRUCTION SPECIFICATIONS ' SECTION 9 FLOODPLAIN EXCAVATION/ WATER QUALITY PONDS 1. Description ' The subwatersheds draining to the section of Salem Creek within the Project Area are currently not managed for the control of storm water runoff. During the. implementation of this project, backfilling of the old stream channel, excavation and rough grading of the floodplain, and ' installation of water control structures will create wetland ponds that provide water quality management for several of the existing outfalls draining the Winston Salem State University property. Fine grading will produce areas with varying water depth within the ponds. The ' pollutant removal efficiency of these ponds will be enhanced by the creation of deepwater and shallow marsh areas. Placing topsoil will provide suitable substrate to establish wetland soils and vegetation in the shallow water areas. ' 2. Materials 2.1 Pond Embankments Preliminary soils testing on site indicates that the soils are sandy loam, loam, clay loam, and clay. Some of these soils (i.e., loam - clay) should provide suitable backfill material for constructing ' the pond embankments. The Contractor shall stockpile subsoils from areas excavated on site for use in constructing the pond embankments, if the soil is determined to be suitable for this use. If there is insufficient suitable backfill material on site to construct the pond embankments, the ' Contractor shall furnish suitable backfill material from an off site source. The backfill materials to be utilized in the pond embankments shall be stockpiled separately from topsoil amendment materials. 2.2 Topsoil Amendments ' Preliminary soils testing on site indicates that the soils are sandy loam, loam, clay loam, and clay. Some of these soils (i.e., sandy loam - clay loam) should provide a suitable substrate for establishing wetland vegetation. These soils should provide a suitable substrate for establishing wetland vegetation. The Contractor shall stockpile topsoil from areas excavated on site for use as ' topsoil dressing if the soil is determined to be suitable. Where the subsoils exposed during excavation are determined to be unsuitable, the Contractor shall place the stockpiled suitable topsoil (i.e., sandy loam - clay loam) to complete placement throughout the areas shown on the ' Plans and as described in these Special Provisions. If there is insufficient suitable topsoil on site to meet the topsoil dressing requirements, the Contractor shall furnish suitable topsoil from an off site source. Topsoil shall be stockpiled separately from the backfill materials to be utilized in the ' pond embankments. 25 2.3 Water Control Structures I 2.3.1 Main Water Control Structures The main water control structures for wetland/water quality ponds shall be weir outfalls ' constructed with 1) compacted fill material along the pond embankment, 2) geotextile liner, and 3) riprap protection. 2.3.2 Pond Dewatering Control Structures ' The pond dewatering control structures shall be six (6) inch PVC pipe extending from the micro- pool through the pond embankment to an outfall in the pond outfall channel. The upstream end ' of the PVC pipe shall have a threaded cap that can be removed to allow draining the permanent pool for routine and emergency maintenance. ' 2.4 Inlet and Outfall Channels The inlet and outfall channels conveying baseflow and storm flow from the storm drain outlets to the ponds and from the outlets of the ponds into Salem Creek shall be constructed of 1) native ' floodplain material and other suitable backfill material (loam - clay loam); 2) a geotextile liner made of woven or non-woven monofilament yarns that meets the following requirements - ' thickness 20 - 60 mils, grab strength 90 - 120 lbs, conforms to ASTM D-1682 or ASTM D-177 and has an EOS no larger than U.S. Standard Sieve no. 70 (0.21 mm) and a total open area of filter not exceeding 10%; and 3) riprap protection composed of graded stone with a D50 of 0.5 feet and a Dmax of 1.5 feet. ' 3. Construction Methods ' 3.1 Excavation and fill for the construction of the storm water wetland/water quality ponds shall be as shown on the Project Drawings. Construction shall be as shown in the plan view and cross section drawings. ' 3.2 The existing elevations and contours shown on the plans and cross sections were surveyed in 2001. Although it is unlikely that floodplain grades and elevations have changed since the original survey was completed, grades and elevations along Salem Creek may have changed since the original survey was completed, due to erosion, sedimentation, and fill. Therefore, the Contractor is responsible for confirming existing grades and to adjust the excavation and ' fill as necessary to produce the desired water quality pond configuration. 3.3 Due to the requirement to dewater the gully channel adjacent to the University parking lot, all excavation and fill to construct the stabilized channel to Water Quality Pond #2, the pond ' and the outfall channel from the pond must be done in an expeditious manner. Dewatering periods must be limited, and the stream flow returned to the new channel as soon as is reasonably possible. The Contractor is responsible to provide adequate equipment and ' manpower, as well as to establish a work schedule that will meet this requirement. 3.4 Remove and stockpile topsoil from the pond sites. 3.5 Rough grade pond areas to create major pond features, including forebays at inlet structures, high marsh wedges, low flow channel, and the micro-pool near outlet structure. Topsoil' ' 26 amendments will require that interim elevations be established to accommodate 3 - 6 inches of topsoil dressing and match final elevations called for in the Project Drawings. ' 3.6 Grade to construct pond embankment. In areas where fill is required to establish the embankment, the Contractor shall place the required fill in a manner so as to provide adequate compaction of the material. No fill will be placed in lifts to exceed one foot (1') ' and each soil lift shall be adequately compacted with heavy equipment before placement of succeeding lifts. Coarser material, boulders, cobble, gravel, and sand shall not be used in constructing the embankment. Only loam, clay loam and clay excavated from the pond areas shall be used to complete any required fill for construction of the embankment . 3.7 Fine grade pond areas to create micro-topography. This shall be accomplished by roughing ' the interim grade with a skid loader as directed by the Project Manager. 3.8 The main water control structures for ponds shall be constructed as weir outfalls by grading ' an outlet in the compacted fill material of the pond embankment, installing geotextile liner over the upstream slope, top, and downstream slope of the compacted fill along the weir outlet, and placing riprap protection over the geotextile liner in the weir outlet area. The locations, dimensions and elevations of the water control structures for the ponds shall be as ' shown on the plan view and cross section details in the Project Drawings. 3.9 The pond dewatering control structures shall be six (6) inch PVC pipe installed such that the ' inlet end extends three (3) feet into the micro-pool and is set one (1) foot off the bottom of the micro-pool and the outlet end extends through the pond embankment and outfalls into a small side channel of the main pond outfall channel. The locations, dimensions and ' elevations of the water control structures for the ponds shall be as shown on the plan view and cross section details in the Project Drawings. ' 3.10Grade to construct the inlet and outfall channels for the water quality ponds. In areas where fill is required to construct the outfall channels, the Contractor shall place the required fill in a manner so as to provide adequate compaction of the material. No fill will be placed in lifts ' to exceed one foot (1') and each soil lift shall be adequately compacted with heavy equipment before placement of succeeding lifts. Install geotextile liner along the length and width of the outfall channel, overlapping the edges by at least 12 inches, and spacing anchor pins every 3 feet. Install riprap protection over the geotextile liner to a depth of 2.5 feet. ' Place the riprap so it forms a dense, well-graded mass of stone along the length and width of the outfall channel. Take care not to damage the liner when placing the riprap. If damage ' occurs remove the riprap and repair the sheet by adding another layer of liner. The location, dimensions, and elevations of the outfall channels shall be as shown on the plan view and cross section details in the Project Drawings. 3.11 Although the requirement for silt control during material storage is determined on a case- by-case basis, when the Contractor stockpiles topsoil and backfill material on-site, silt control will be required. The Contractor should be prepared to provide adequate silt control ' as provided for in the Construction Specification Section 4 - Pollution Control. 3.12The Contractor shall transport for disposal soil excavated from the floodplain that is either unsuitable for topsoil dressing or backfill material for the ponds or is in excess of the ' material needed for backfilling of the old channel areas. The City will provide the Contractor with limited disposal areas at the Hanes Mill Road Landfill. No tipping fee will ' be assessed for disposal of the soil. ' 27 r i i i i i i i 4. Measurement and Method of Payment Payment for floodplain excavation, backfilling.of the old channel, and constructing the water quality, pond weir structures to create the water quality ponds will be measured and paid for at the Contract unit price per cubic yard of floodplain material excavated, backfill material placed in the old channel, and material utilized to construct the weirs. Payment for the pond drain pipes and the Pond #2 outfall channel will be measured and paid for at the Contract unit price per liner foot of pipe installed and per liner foot outfall channel constructed. Payment will be full compensation for all materials, transport, excavation, installation, and construction, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 28 CONSTRUCTION SPECIFICATIONS SECTION 10 STORM DRAINAGE 1 1. Description ' During the implementation of this project, some existing storm drain outfalls will be repaired and stabilized in their current location, some existing storm drain outfalls will be extended and/or relocated to accommodate channel restoration, and other existing storm drain outfalls will be extended and/or relocated to convey storm water runoff from Winston-Salem State University ' property to the wetland/water quality ponds. a. Diggs Blvd Storm Drain Relocation ' This work involves the relocation of the existing storm drain system from its current outfall location along Stadium Branch to a point along the mainstem Salem Creek. This work is ' necessary to accommodate the restoration/relocation of Stadium Branch and includes furnishing and installing a manhole, storm drain pipes, pipe bands, pipe bedding, and storm drain end sections and enlarging an existing drainage swale that will convey runoff from the pipe outfall to ' Salem Creek. b. Park View Road Storm Drain Installation I This work involves the extension of the existing storm drain system from its current outfall location on the slopes above Salem Creek along Park View Road to an outfall in Water Quality Pond #2. This work is necessary to correct the slope erosion problems created by the current ' outfall and to provide water quality management for the portion of the Winston Salem State University draining to this point. The work includes furnishing and installing a manhole, storm drain pipes, pipe bands, pipe bedding, and storm drain end sections. ' c. Misc. Storm Drain Repairs/Extensions ' During the implementation of this project, some existing storm drain outfalls will be repaired and stabilized in their current location, some existing storm drain outfalls will be extended and/or relocated to accommodate channel restoration, and other existing storm drain outfalls will be extended and/or relocated to convey storm water runoff from Winston-Salem State University ' property to the water quality ponds. The work shall consist of obtaining, transporting materials, and installing storm drain pipes, pipe end sections, and stabilized outfall channels. ' The work shall consist of obtaining, transporting materials, and installing storm drain manholes, storm drain pipes, pipe end sections, and stabilized outfall channels. ' 2. Materials 2.1 Storm Drain Manholes a. Park View Street Storm Drainage Extension This manhole shall be a 48 " Precast Manhole type A, Modified. Modifications shall include: 29 0 1.) The bottom and middle sections shall be as shown in Plate 3.01 for Type A Manholes. 2.) The top section and circular top slab shall be 4 feet diameter as shown in Plate 3.01 for Type B Manholes. 3.) The brick lining for the manhole invert shall be a minimum of 8 inches thick above the bottom slab. 4.) The frame and cover shall be a shallow 4-inch depth, non-traffic bearing type as shown in Plate D-3.05. b. Diggs Boulevard Storm Drainage Relocation This manhole shall be a 48 " Precast Manhole type B, Modified. Modifications shall include: l.) The top section and top slab shall be as shown in Plate 3.01 for Type B Manholes. 2.) The frame and cover shall be a shallow 4-inch depth, non-traffic bearing type as shown in Plate D-3.05. 2.2 Storm Drain Pipes and End Sections a. Storm drain pipes used to construct the Park View Street storm drainage system extension and Diggs Boulevard storm drainage system relocation shall be reinforced concrete pipe (M 170, Class 4) of the sizes specified in the Construction Drawings. Storm drain pipe end sections used to construct the Park View Street and Diggs Boulevard storm drainage systems shall be as shown in Plate 1.11. b. Storm drain pipes, pipe bands and end sections used to repair and/or relocate existing storm drain outfalls to accommodate channel restoration and/or convey storm runoff to the wetland/water quality ponds shall be the same type and size as the existing storm drain systems. 2.3 Pipe Installation and Bedding Material a. Joint Sealer 1.) Mortar - Concrete Mix No. 2 or 2.) Asphalt Sealer for Concrete Pipe or 3.) Rubber Type Gaskets or 4.) Resilient Type Material b. Bedding 1.) No. 57 Aggregate or 2.) Crusher Run Aggregate CR-6 and 3.) Geotextile 3. Construction Methods 3.1 General Pipe lengths and gradients shall be verified by the Contractor and shall be acceptable to the Project Manager before installation. When laid on existing ground or under fill, the embankment shall be constructed to a height of at least 9 inches, but not more than 3 feet above the top of the proposed pipe and then a trench is excavated to receive the pipe. 30 i J I 3.2 Excavation A minimum width of 24 inches from the outside diameter of the pipe to side of trench must be allowed for compaction of fill material under the haunches and around the pipe. See Trench detail in the Storm Drain Standard Details. 3.3 Bedding Where the bottom of the trench at subgrade is in rock, excavation shall be carried at least 6 inches below the specified subgrade with a minimum of 4 inches under the bells. The trench bottom shall be restored to subgrade with earth or granular material and completely protected with geotextile if bedding is greater than 12 inches. 3.4 Installation Pipe shall be laid with hubs upgrade. A single lay hole through the shell of the pipe will be permitted with an approved lifting device. After installation the lay hole shall be filled. 3.5 Joints a. All joints shall be cemented or sealed. If mortar is used, it shall completely fill the joint and be used to form a bead around the outside of the joint. The inside of the joint shall be wiped and finished smooth. The mortar on the outside shall be protected from the air and sun for two days or until backfill is placed around the pipe. b. As an alternate to mortared joints, asphalt sealer, rubber type gaskets or resilient type material may be used. Care shall be exercised to insure the proper application of sealer on the underside of all joints. These materials shall be installed as recommended by the manufacturer. 3.6 Pipe Connections a. Pipe connections may be either fabricated or constructed in the field. Corrugated pipe sections shall be butted together and the sections joined with an approved band. A field pipe connection shall include cutting a hole in one pipe, inserting and trimming the connecting pipe and placing a concrete collar at the connection. In the place of corrugated pipes, a welded connection may be substituted for the concrete collar. b. Inlet and outlet pipe at manholes shall be set or cut flush with the inside faces of the walls of such structures and shall extend a sufficient distance beyond the outside faces of these walls to provide ample room for making proper connections. The 3.7 Backfill a. Earth for backfill shall be free from large lumps, clods, and rocks and shall be placed along the side of the pipe for the full width of the trench in layers not to exceed 6 inches uncompacted depth. Each layer shall be compacted simultaneously on both sides of the pipe by means of an approved mechanical tamper. All backfill material shall have an in place compacted density of 95%. This method of fill and compaction shall continue until the embankment is completed to a height of not less than 9 inches above the top of the pipe. The final 2 inches below finished grade shall have an in place compacted density of 100%. 31 G 0 C b. The Contractor shall protect all pipe from damage due to construction equipment or other vehicular traffic passing over the pipe. c. Backfill may be placed immediately after laying pipe, provided the mortar joints are protected with roofing paper or approved material. d. Under no circumstances shall water be permitted to rise in the unbackfilled trenches after the pipe has been placed. e. Backfill material beneath roadways shall be select backfill material. 3.8 Removal of Existing Pipes Where specified in the Construction Drawings, existing storm drain pipes shall be removed and shall become the property of the Contractor. Backfilling of trenches resulting from pipe removal shall conform to standard backfilling provisions. 4. Measurement and Method of Payment Payment for Diggs Boulevard Storm Drain Relocation will be measured and paid for at the Contract unit price per each manhole installed, per linear foot of storm drain pipe installed, and per cubic yard of material excavated to construct the storm drainage swale. Payment for Park View Street Storm Drain Installation will be measured and paid for at the Contract unit price per each manhole installed and per linear foot of storm drain pipe installed. Payment for the miscellaneous storm drain repairs and extensions will be measured and paid for at the Contract unit price per linear foot of storm drain pipe installed, per linear foot of stabilized storm drain outfall installed, and per cubic yard of material excavated/placed for the MLK Drive gully repair. Payment will be full compensation for all materials (e.g., manholes, storm drain pipes, pipe bands, pipe end sections, filter fabric, bedding, backfill material, etc.), transport, excavation, installation, and construction, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 32 0 CONSTRUCTION SPECIFICATIONS SECTION 11 CROSS VANE 1. Description An 18-inch sanitary sewer crosses Salem Creek in the lower reaches of the project area. The sewer has created a major obstruction to flow. The pipe as well as the debris it collects has contributed to severe erosion of the banks and lateral adjustment of the channel in this area of Salem Creek. To protect the sanitary sewer and correct the unstable channel conditions a cross vane will be installed. Cross vanes are in-stream structures constructed with native/natural materials (i.e., boulders and/or logs) that are typically installed at the upstream end of a riffle. In this project a cross vane will serve to divert stream flow away from banks and towards the center of the channel as it flows past the sewer. ' This work shall consist of transporting, installing and maintaining cross vane structures within the stream channel, as described in this section, shown on the Construction Drawings, and as directed ' by the Project Manager. The Contractor shall furnish all labor, material and equipment required to install cross vane structures. 2. Materials 2.1 Cross vane rocks shall consist of angular flat rock, similar in color, texture, and density to the native rock on the site obtained from an approved source. The dry unit weight of the rock shall be 130 lb/cu ft or greater. The dimensions of the rock will be a minimum of 3 feet and maximum of 5 feet along the long (a) axis, a minimum of 2 feet and maximum of 4 feet along the median (b) axis, a minimum of 1 foot and maximum 2 feet along the short (c) axis. 2.2 Source of Materials The Contractor will be responsible for identifying a source of rock for the cross vane. At the time of the Pre-construction meeting, the Contractor and Project Manager will visit the source and confirm that the rocks identified will meet the specifications outlined above. The Contractor will be responsible for transporting the rock to the project site. 3. Construction Methods 3.1 Cross vane structures shall be installed according to the Sequence of Construction, the plans and details, the following specifications, and as directed by the Project Manager. 3.2 Cross vane structures shall be constructed with three principal components, a sill and two (2) arms. Each cross vane component comprises approximately one-third of the bankfull channel width. The cross vane sill is installed in the center of the channel. Each arm pivots from its respective side of the sill and tapers downstream, forming a broad "U" shaped structure. 33 i 3.3 The cross vane sill shall be installed in the center of the channel at the top of the riffle. The first row of footer rocks for the sill shall be firmly keyed into the stream bottom along the entire sill. The second row of footer rocks shall be placed above and upstream of the first row so that they lean against the lower row of footer rocks. The top rocks for the sill shall be placed above and upstream of the second row so that they lean on the upper row of footer rocks. The top rocks along the length of the sill shall be set at the proposed invert elevation for the crest of the riffle. Each top rock shall be placed adjacent to and tight against one another. 3.4 Each cross vane arm shall be installed, starting at the sill and working in a downstream direction, with tie-in at the bank. Each arm shall be set at an angle of 201 - 301 tangent to the curve and shall rise at a slope of 4 - 7% from the streambed to its tie-in at the bank. 3.5 The first row of footer rocks for each arm shall be firmly keyed into the stream bottom along the entire arm. The second row of footer rocks shall be placed above and on the stream bank side of the first row so that they lean against the lower row of footer rocks. The top rocks for each arm shall be placed above and on the stream bank side of the second row so that they lean on the upper row of footer rocks. The top rocks at the pivot, upstream end, of each arm are set at the same elevation as the top sill rock. The top rocks at the tie-in, downstream end, of each arm are set at one-half bankfull elevation. Each top rock shall be placed adjacent to and tight against one another. 4. Measurement and Method of Payment Cross vane structures will be measured and paid for at the Contract unit price per each cross vane structure installed. Payment will be full compensation for all materials, transport, excavation, installation, and maintenance of cross vane structures, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 34 I CONSTRUCTION SPECIFICATIONS ' SECTION 12 ROCK VANES 1. Description ' Rock vanes are in-stream structures constructed with native/natural materials (i.e., boulders) that are typically installed along the channel margin in meander bends. In this location they serve to divert stream flow away from banks and towards the center of the channel as it flows from the run at the upstream end, through the pool, and out the glide at the downstream end of the meander ' bend. In addition, these structures maintain the thalweg offset from the bank and create back- eddies along the channel margin that encourage the deposition of material along the toe of the bank as well as provide excellent habitat for fish. ' This work shall consist of transporting, installing, and maintaining the rock vane structures, as specified on the Grading Details in the Construction Drawings, as described in these specifications, and as directed by the Project Manager. The Contractor shall furnish all labor, ' material and equipment required to install the rock vanes. ' 2. Materials 2.1 Rock vane rocks shall consist of angular flat rock, similar in color, texture and density to the native rock on the site obtained from an approved source. The dry unit weight of the rocks ' shall be 130 lb/cu ft or greater. The dimensions of the rock will be a minimum of 3 feet and maximum of 5 feet along the long (a) axis, a minimum of 2 feet and maximum of 4 feet along the median (b) axis, and a minimum of I foot and maximum of 2 feet along the short ' (c) axis. 2.2 The Contractor will be responsible for identifying a source of rock for the rock vanes. At the time of the Pre-construction meeting, the Contractor and Project Manager will visit the ' source and confirm that the rocks identified will meet the specifications outlined above. The Contractor will be responsible for transporting the rock to the project site. ' 3. Construction Methods 3.1 Rock vanes shall be installed according to the Sequence of Construction, the Plan Sheets and ' Grading Detail Sheets in the Construction Drawings, as described in these specifications, and as directed by the Project Manager. ' 3.2 Rock vanes shall be installed starting at the stream bank, working in upstream direction, and tie-in to the streambed. The rock vane is set at an angle of 20 - 30° tangent to the curve of the bank and shall rise at a slope of 4 - 7% from the streambed to its tie-in at the bank. 3.3 The first row of footer rocks shall be firmly keyed into the stream bottom along the entire rock vane. The second row of footer rocks shall be placed above and on the stream bank side of the first row so that they lean against the lower row of footer rocks. The top rocks for the ' rock vane shall be placed above and on the stream bank side of the second row so that they lean on the upper row of footer rocks. The top rocks at the tie-in, downstream end, of rock ' 35 ' vane are set at one-half bankfull elevation. Each top rock shall be placed adjacent to and tight against one another. ' 4. Measurement and Method of Payment ' Rock vanes will be measured and paid for at the Contract unit price per each rock vane installed. Payment will be full compensation for all materials, transport, excavation, installation, and maintenance of rock vanes, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. I END OF SECTION 36 CONSTRUCTION SPECIFICATIONS SECTION 13 ROCK SILLS 1. Description Restoration of Salem Creek will require raising the streambed to reconnect the channel and adjacent floodplain. Backfilling the entire streambed would be cost prohibitive. However, installing grade control structures at key points along the channel will create riffles and provide a cost effective means of raising the streambed. This work shall consist of transporting, installing and maintaining rock sills within the stream channel along Salem Creek. 2. Materials ' 2.1 Rock sill rocks shall consist of round, subangular, or angular rock, similar in color, texture and density to the native rock on the site obtained from an approved source. The dimensions of the boulders will be a minimum of 1 foot and maximum of 2 feet in diameter. The dry ' unit weight of the boulders shall be 130 lb/cu ft or greater. The cobble size material will range from 2.5 inches to 10 inches in diameter and the gravel size material will range from 0.5 inches to 2 inches in diameter. ' 2.2 The Contractor will be responsible for identifying a source of rock for the rock sills. The Contractor will be responsible for transporting the rock to the project site. ' 3. Construction Methods 3.1. Rock sills shall be installed according to the Sequence of Construction, the Plans and details, the following specifications, and as directed by the Project Manager. 3.2. Rock sills shall be constructed to form the crest of riffles such that the top of the sill ' structure is set at the proposed invert of the channel. 3.3. The rock sill will be constructed perpendicular to the flow, extending the full width of the ' base channel, and extending up stream and downstream of the sill crest as shown the Plans and details. 3.4. Installation of the rock sill will involve placing boulders to form the main components of the ' sill structure. Cobble and gravel sized material will be utilized to fill the voids between the boulders and complete the sill structure. ' 4. Measurement and Method of Payment Sill Rock will be measured and paid for at the Contract unit price per each rock sill installed. ' Payment will be full compensation for the transport and placement of all materials in the channel, and for all material, labor, equipment, tools, and incidentals necessary to complete the work as specified in these special provisions and on the plans. I END OF SECTION 37 CONSTRUCTION SPECIFICATIONS ' SECTION 14 ASPHALT WALKING TRAIL 1. Description This work shall consists of repairing or relocating the existing asphalt walking/bike trail within ' the limits of the Project, as specified on the Grading Details in the Construction Drawings and as described in these specifications. The Contractor shall furnish all labor, materials and equipment required to repair or relocate the existing walking/bike trail. 2. Materials The walking/bike trail shall consist of; 1) a base course of coarse aggregate, 2) a primer coat, and 3) a surface course of hot mix bituminous concrete. ' 3. Construction Methods 3.1 The Contractor shall field stake or mark the proposed trail pathway in accordance with ' the Construction Drawings. 3.2 The trail will be excavated and the subgrade cleaned and cleared to a depth 6 inches below finished grade, and compacted to 95%. A soil sterilant may be used to control ' weeds. 3.3 A 4-inch base course of coarse aggregate shall be installed and compacted to 95%. ' 3.4 An asphalt primer coat shall be applied. 3.5 A 2-inch surface course of hot mix bituminous concrete shall be applied and roll compacted to 95%. ' 3.6 Sections of the existing trail along the proposed trail pathway may be damaged during construction. These sections shall be replaced or repaired as may be determined to be necessary by the Contractor, City Recreation and Parks Inspector, and Project Manager. ' 4. Measurement and Method of Payment ' Relocation and repair of the existing walking/bike trail will be measured and paid for at the Contract unit price per linear foot of trail installed or repaired. Payment will be full compensation for all materials, transport, excavation, installation of the trail, and for all material, ' labor, equipment, tools, and incidentals necessary to complete the work as specified in these specifications and on the plans. END OF SECTION ? 38 CONSTRUCTION SPECIFICATIONS SECTION 15A SPECIAL SPECIFICATIONS FOR PREFABRICATED FOOTBRIDGE 1. Description The existing footbridge that carried pedestrian traffic between Civitan Park and Winston Salem State University is no longer functional. It will be replaced with a prefabricated bridge and boardwalk downstream of its current location. To reduce the cost of spanning the bankfull channel and floodprone area, the design includes a 70 foot single span bridge which spans the bankfull channel and a portion of the floodprone area and 60 feet of boardwalk that spans the remainder of the floodprone area. This work shall consist of constructing bridge abutments, bridge setting plates, bridge bearing plates, erection/installation of the prefabricated bridge delivered to the site by the manufacturer. 2. General These specifications are for a fully engineered clear span bridge of steel construction and shall be regarded as minimum standards for design and construction. Pre-approved Bridge Supplier: Continental Bridge 8301 State Highway 29 North Alexandria, Minnesota 56308 1-800-328-2047 Contact: Mr. Lee Hanson 3. Features of Design 3.1 Span Bridge span shall be 70'-0" (straight line dimension) and shall be as measured from each end of the bridge structure. 3.2 Width Bridge width shall be 6'-0" and shall be as measured from the inside face of structural elements at deck level. ' 3.3 Model Type Bridge(s) shall be a Half-Through Pony System with one (1) diagonal per panel and square end ' vertical members. Interior vertical members shall be perpendicular to the chord faces. The top of the top chord shall not be less than 54 inches above the deck (measured from the high point of the deck). ' 39 L 3.4 Member Components ' All members of the vertical trusses (top and bottom chords, verticals, and diagonals) shall be fabricated from square and/or rectangular structural steel tubing. Other structural members and bracing shall be fabricated from structural steel shapes or square and rectangular structural steel. ' 3.5 Safety Rails Horizontal safety rails shall be placed on the full height of the side trusses, and shall be placed so ' as to prevent a 4" sphere from passing through the truss. The safety rail system shall be designed for an infill loading of 200 pounds, applied horizontally at right angles, to a one square foot area at any point in the system. ' 3.6 Camber ' The bridge shall have a vertical camber dimension at midspan equal to 100% of the full dead load deflection. ' 3.7 Elevation Difference The bridge abutments shall be constructed at the same elevation on both ends of the bridge. ' 4. Engineering Structural design of the bridge structure(s) shall be performed by or under the direct supervision ' of a licensed professional engineer and done in accordance with recognized engineering practices and principles. The engineer shall be licensed to practice in North Carolina. ' 4.1 Design Loads In considering design and fabrication issues, this structure shall be assumed to be statically ' loaded. No dynamic analysis shall be required nor shall fabrication issues typically considered for dynamically loaded structures be considered for this bridge. ' 4. 1.1 Uniform Live Load Main supporting members (girders, trusses and arches) shall be designed for a pedestrian live t load of 85 pounds per square foot of bridge walkway area. If the bridge walkway area to which the pedestrian live load is applied (deck influence area) exceeds 400 square feet, the pedestrian live load may be reduced by the following equation: t w=85[0.25+ 15 A V -A1 Where w is the design pedestrian load (psf) and Aj is the deck influence area in square feet. The ' reduced design live load shall not be less than 65 pounds per square foot of bridge walkway area. Secondary Members: Bridge decks and supporting floor systems, including secondary stringers, ' floor beams and their connections to main supporting members shall be designed for a live load of 85 pounds per square foot, with no reduction allowed. ? 40 4 1 2 V hi l d . . e c e Loa s ' The bridge superstructure, floor system and decking shall be designed for each of the following point load conditions: ' ? A concentrated load of 1000 pounds placed on any area 2.5 ft x 2.5 ft square. ? A 1200 pound two wheel vehicle with a 60" wheelbase and a 4"x1.5" tire print area. ' ? For bridges with a deck width of 48" or greater, a four-wheeled vehicle (no impact allowance is required) with the axle loadings, wheelbase, and tire track as indicated below: 48" to 65" Wide: 4000-pound vehicle, 50% to each axle, 48" wheelbase, 32" tire track 66" to 83" Wide: 6000-pound vehicle, 50% to each axle, 66" wheelbase, 48" tire track 84" to 107" Wide: 8000-pound vehicle, 60% to rear axle, 102" wheelbase, 60" tire track 108" to 144" Wide: 10,000-pound vehicle, 60% to rear axle, 120" wheelbase, 72" tire track 4.1.3 Wind Load ' The bridge(s) shall be designed for a wind load of 25 pounds per square foot on the full vertical projected area of the bridge as if enclosed. The wind load shall be applied horizontally at right ' angles to the longitudinal axis of the structure. The effect of forces tending to overturn structures shall be calculated assuming that the wind direction is at right angles to the longitudinal axis of the structure. In addition, an upward force ' shall be applied at the windward quarter point of the transverse superstructure width. This force shall be 20 pounds per square foot of deck. ' 4.1.4 Top Chord Railing Loads The top chord, truss verticals, and floor beams shall be designed for lateral wind loads (per section 3.1.3) and for any loads required to provide top chord stability as outlined in Section ' 3.3.6; however, in no case shall the load be less than 50 pounds per lineal foot or a 200 pound point load, whichever produces greater stresses, applied in any direction at any point along the ' top chord. 4.1.5 Load Combinations The loads listed herein shall be considered to act in the following combinations, whichever produce the most unfavorable effects on the bridge superstructure or structural member concerned. [DL = Dead Load; LL = Live Load; WL = Wind Load; VEH = Vehicle Load] ' DL + LL DL + VEH DL+WL ' DL+LL+WL DL+VEH+.3 WL ' NOTE: Allowable stresses may be increased 1/3 above the values otherwise provided when 41 d produced by wind loading, acting alone or in combination with the design dead and live loads. 4:2 Design Limitations 4.2.1 Deflection The vertical deflection of the main trusses due to service pedestrian live load shall not exceed 1/400 of the span. The deflection of the floor system members (floor beams and stringers) due to service pedestrian live load shall not exceed 1/360 of their respective spans. Deflection limits due to occasional vehicular traffic shall not be considered. The horizontal deflection of the structure due to lateral wind loads shall not exceed 11500 of the span under a 25 PSF wind load. 4.2.2 Minimum Thickness of Metal The minimum thickness of all structural steel members shall be 3/16" nominal and be in accordance with the AISC Manual of Steel Constructions' "Standard Mill Practice Guidelines". For ASTM A500 and ASTM A847 tubing, the section properties used for design shall be per the Steel Tube Institute of North America's Hollow Structural Sections "Dimensions and Section Properties". 4.3 Governing Design Codes / References ' 4.3.1 Structural Steel Allowable Stresses Structural steel design shall be in accordance with those sections relating to design requirements ' and allowable stresses, of the "Manual of Steel Construction: Allowable Stress Design" by the American Institute of Steel Construction (AISC). ' 4.3.2 Welded Tubular Connections All welded tubular connections shall be checked, when within applicable limits, for the limiting ' failure modes outlined in the ANSI/AWS D1.1 Structural Welding Code or in accordance with the "Design Guide for Hollow Structural Section Connections" as published by the Canadian Institute of Steel Construction (CISC). When outside the "validity range" defined in these design ' guidelines, all applicable limit states or failure modes must be checked. 4.3.3 Wood ' Sawn lumber shall be designed in accordance with the ANSI/AF&PA NDS, "National Design Standard for Wood Construction", as published by the American Forest & Paper Association or the "Timber Construction Manual" as published by the American Institute of Timber Construction (AITC). Design. properties for naturally durable hardwoods shall be in accordance with "Tropical Timbers of the World", as published by the U.S. Forest Products Laboratory. ' 4.3.4 Top Chord Stability The top chord of a half-through truss shall be considered as a column with elastic lateral supports ' at the panel points. The critical buckling force of the column, so determined, shall exceed the maximum force from dead load and live load (uniform or vehicular) in any panel of the top chord by not less than 50 percent for parallel chord truss bridges or 100 percent for tied arch bridges. ' The design approach to prevent top chord buckling shall be as outlined by E.C. Holt's research 42 u work in conjunction with the Column. Research Council on the stability of the top chord of a half-through truss. In addition, for the dead load plus vehicle load combination, the spring constant "C" furnished by the transverse "U-Frames" shall not be less than "C" required as defined by: ' 1.46 P, C required = L ' where Pc is the maximum top chord compression due to dead load plus the vehicle load times the appropriate safety factor (1.5 for parallel chord truss bridges or 2.0 for tied arch truss bridges) and L is the length in inches of one truss panel or bay. ' For uniformly loaded bridges, the vertical truss members, the floor beams and their connections (transverse frames) in half-through truss spans shall be proportioned to resist a lateral force of not less than 1/100k times the top chord compressive load, but not less than .004 times that top chord load, applied at the top chord panel points of each truss. For bridges with vehicle loads, the lateral force applied at the top chord elevation for design of ' the transverse frames shall not be less than I% of the top chord compression due to dead load plus any vehicle loading. ' The bending forces in the transverse frames, as determined above, act in conjunction with all forces produced by the actual bridge loads as determined by an appropriate analysis which assumes that the floor beams are "fixed" to the trusses at each end. ' NOTE: The effects of three-dimensional loading (including "U-frame" requirements) shall be considered in the design of the structure. The "U-frame" forces in half-through spans shall be ' added to the forces derived from a three dimensional analysis of the bridge. 5. Materials ' 5.1 Steel 5.1.1 Unpainted Weathering Steel ' Bridges which are not to be painted shall be fabricated from high strength, low alloy, atmospheric corrosion resistant ASTM A847 cold-formed welded square and rectangular tubing and/or ASTM ' A588, or ASTM A242, ASTM A606 plate and structural steel shapes (Fy = 50,000 psi). The minimum corrosion index of atmospheric corrosion resistant steel, as determined in accordance with ASTM G101, shall be 5.8. ' 5.2 Decking ' 5.2.1 Wood Decking Shall be naturally durable hardwood Ipe (Tabebuia Spp) Lapacho Group, as supplied by Timber Holdings Ltd, Milwaukee, WI. All planks shall be partially air dried to moisture content of 15% to 20%, and shall be supplied S4S (surfaced four sides) and E4E (eased four edges). All planks shall be supplied with the end sealed with "Anchorseal" Mobil CER-M or an equal aquious wax log sealer. 43 6. Welding Welding and weld procedure qualification tests shall conform to the provisions of ANSI/AWS ' D1.1 "Structural Welding Code", 1996 Edition. Filler metal shall be in accordance with the applicable AWS Filler Metal Specification (i.e. AWS A 5.28 for the GMAW Process). For exposed, bare, unpainted applications of corrosion resistant steels (i.e. ASTM A588 and A847), ' the filler metal shall be in accordance with AWS D1.1, Section 3.7.3. Welders shall be properly accredited operators, each of whom shall submit certification of satisfactorily passing AWS ' standard qualification tests for all positions with unlimited thickness of base metal, have a minimum of 6 months experience in welding tubular structures and have demonstrated the ability to make uniform sound welds of the type required. ' 7. Submittals Schematic drawings, diagrams and calculations shall be submitted to the customer for their review after receipt of order. All relative design information such as member sizes, bridge ' reactions, and general notes shall be clearly specified on the drawings. All drawings shall be signed and sealed by a Professional Engineer who is licensed in accordance with Section 3.0. ' 8. Fabrication Bridge(s) shall be fabricated by a fabricator who is currently certified by the American Institute ' of Steel Construction to have the personnel, organization, experience, capability, and commitment to produce fabricated structural steel for the category "Simple Steel Bridges" as set forth in the AISC Certification Program. Quality control shall be in accordance with procedures ' outlined for AISC certification. 9. Finishing ' 9.1 Finishing for Unpainted Weathering Steel: To aid in providing a uniformly "weathered" appearance, all exposed surfaces of steel shall be blast cleaned in accordance with Steel Structures Painting Council Surface Preparation Specifications No. 7 Brush-Off Blast Cleaning, SSPC-SP7 latest edition. Exposed surfaces of steel shall be defined as those surfaces seen from the deck and from outside of the structure. Stringers, floor beams, lower brace diagonals and the inside face of the truss below deck and bottom face of the bottom chord shall not be blasted. ' 10. Delivery and Erection Delivery is made to a location nearest the site, which is easily accessible to normal over-the-road ' tractor/trailer equipment. All trucks delivering bridge materials will need to be unloaded at the time of arrival. The manufacturer will provide detailed, written instruction in the proper lifting procedures and splicing procedures (if required). The method and sequence of erection shall be ' the responsibility of others. The bridge manufacturer shall provide written inspection and maintenance procedures to be followed by the bridge owner. ' 11. Bearing Devices The Contractor will install the bridge bearings as outlined below and as shown in the construction ' drawings. 44 Bridge bearings shall consist of a steel setting or slide plate placed on the abutment or grout pad. The bridge bearing plate, which is welded to the bridge structure, shall bear on this setting plate. ' The bridge bearings shall sit in a recessed pocket on the concrete abutment. The bearing seat shall be a minimum of 16" wide. The step height (from bottom of bearing to top-of-deck) shall be determined by the bridge manufacturer. 12. Bridge Foundation The Contractor will construct the bridge foundation in accordance with the structural foundation ' design provided by the bridgfe supplier. The bridge supplier shall provide a structural foundation design for the bridge based on an assumed net soil bearing pressure of 2000 psf. The foundation will utilize a spread footing abutment design, with the abutment fully buried in the ground and ' not acting as a retaining wall. It will be the owner's responsibility and liability to confirm the net soil bearing pressure during ' the construction phase of the project. A site survey shall be completed and forwarded to the bridge manufacturer at the owner's expense, prior to the start of the structural foundation design. Structural foundation design services will be provided by the supplier at an additional cost to the ' providing of the bridge. These services are for the structural design of the foundations only. Foundations are defined as the elements, which interface between the bridge bearings and the ground, supporting the bridge structure. ' Site layout, grading, hydraulic, scour, soil stability, or other civil engineering design services typically required for bridge installations, as well as site construction services for the foundations, will be the owner's responsibility. Design of additional earth retaining structures, such as ' retaining walls and wing walls are not the bridge manufacturer's responsibility. It will be the owner's responsibility to determine local code conditions and notify the bridge supplier if these codes are in conflict with the codes shown on the drawings. ' 13. Measurement and Method of Payment Installation of the footbridge will not be measured for payment but will be paid for at the Contract ' lump sum price. Payment will be full compensation for prefabrication of the bridge, bridge foundation design services, construction of the bridge foundation and bridge bearing devices, delivery, and erection of the bridge, and for all material, labor, equipment, tools, and incidentals ' necessary to complete the work as specified in these specifications and on the plans. END OF SECTION 45 11 CONSTRUCTION SPECIFICATIONS ' SECTION 15B BOARDWALK 1) Description This work shall consist of installing a boardwalk that extends the pedestrian footbridge on left side of Salem Creek. This work shall be accomplished, as specified in the Construction Drawings and as described in these specifications. The Contractor shall furnish all labor, materials and equipment required to install the boardwalk. ' 2) Materials 2.1 Boardwalk a. The boardwalk shall consist of. l) 12 in. diameter timber piles; 2) 3 in. x 8 in. diagonal ' bracing; 3) 4 in. x 12 in. pilecap beams; 4) 3 in. x 10 in. stringers; 5) 2 in. x 6 in. decking; 6) 4 in. x 4 in. hand rail posts; 7) 2 in. x 2 in. hand rail pickets; 8) 2 in. x 4 in. top rails; 9) 2 in. x 6 in. rail caps and 10) all necessary foist hangers, carnage bolts, woods screws, etc. necessary ' to install the boardwalk. b. All lumber utilized in the installation of the boardwalk shall be pressure-treated with ACZA (ammoniacal copper zinc arsenate) or an equivalent non-leaching treatment. ' 3. Construction Methods ' 3.1 Piling holes will be dug to subgrade and compacted to 98% optimum density. Timber piles will be installed on 10-foot centers. 3.2 Diagonal bracing, pilecap beams, and stringers shall be constructed as shown in the Typical ' Boardwalk Section and Details #1 and 2 included in this Specification. 3.3 Decking and handrails shall be constructed as shown in the Typical Boardwalk Section and Details #2 and 3 included in this Specification. 46 i i i i i i i i 35c 10' STRINGERS - 924' OG MAX. D.T. t ' (2) 4'x 12' PtLEGAP BEAM5, 5EE DETAIL 1 DETAIL 2 I 4.,6» ?i 3k 8' DIAGONAL ( 4 KS, 'YP 12'0 TIMER PILE I ? I ON 10' GBiTERS (TYPJ ALL TIMER TO BE PRESSURE TREATED 50U EM4 YEL OW PINE TYP I GAL. BOARONALK SEGTI ON 5C ALE: 1/2t1= (1 011 47 W-3" OVERALL - - - 6'-O' GLR -- -i? RAICDRAILRi6 IN AGGORDANGE WITH Q-IENT DESHMS, MIST MEET OR EX EM BOGA 5PEUFIGAT10N5 ¢ ¢. PILE PILE 5'-O" 2Sc W DEGKIN5, TYP. L i i i i i i PILE ,?25c b' DECKING i -OVERLAP INTERIOR STRINGERS 12' • PILEGAP BEAM. TVP. EQ. EXTERIOR STRINGER I 3Sc 10'x 1'-0' LONG YA SPLICE PLATE • EXTERIOR STRINGERS EQ. 5? -5AWCUT NOTCH INTO PILE FOR PILEGAP BEAM TO BEAR ON, 5EE DETAIL 2 4'x 12' PILEGAP- / BEAM. 5EE DETAIL 1 3'x 8' DIAGONAL BRACE, TYP. (oPnOMAU 11 ? -CUT END OF DIA60NAL BRACE FLVSH WITH OUTSIDE FACE OF PILE { {2J 314-0 A3M THROUGH BOLT5 11 WITH HEAVY HEX NUTS t Y4A9eZ5 • EACH VIA 5CWAL BRACE TO PILE CONNECTION 12.0 TIMER PILE ON 10' C 34TERS (TYPJ DETAIL #1 SCALE: 1-1/2"= 11-O" 48 P;LE r'--A77AGn DESK N5 TO i 5TR;NSER5 YIV2 H07 D;P GALVAN ZED 16D NAJL5 2 114 ERSCR 5TR;NGER5, 3„ ?„ 3 r f OVER!..A" 12' K.N. F i 1 ? J "X 10" 5TR NG-ER 1GN7RAGTOR TO CV.RS:ZE- -Oi15 FOR 7HRO',*H 3.:L 5 TO EN5i.RE ?HAT PI EGAP 3FAA5 AR= SEARIfW GNO . 4'x 12 P!LEGAP 3;hM, NS. 6 F.S. '2, (2J A30-7 3/4'0 7r¢51t BOLTS Y JTH F-EAVY i EX ,:JTS B YVAS-FERS, TYP. NOTGtH PILE TD ALLG'N PLEGAP BEAM TD f3?AR ON PL E. TYP. T, !EER Fl' DETA 1 L #2 50ALE: 1-1/211= 11-O" 49 2 X 6 RAIL CAP. FASTEN TO POSTS WITH TWO (2) LAG BOLTS AT EACH LOCATION. 2 X 4 TOP RAIL. FASTEN TO POSTS WITH TWO (2) LAG BOLTS AT EACH LOCATION. 2 X 2 RAIL PICKETS Q MR O.C. MAXIMUM. FASTEN TO TOP RAIL AND STRINGERS TWO (2) CERAMIC SCREWS AT EACH LOCATION. 4 X 4 POST BEYOND. FASTEN TO STRINGER WITH TWO (2) s/,' HEX BOLTS AT EACH LOCATION. :2"x b" DECKIN6. TYR DETAIL #3 NO SCALE 50 4. Measurement and Method of Payment ' Installation of the boardwalk will be measured and paid for at the Contract unit price per linear foot of boardwalk installed. Payment will be full compensation for all materials, transport, excavation, installation of the trail, and for all material, labor, equipment, tools, and incidentals ' necessary to complete the work as specified in these specifications and on the plans. i i i i i i END OF SECTION 51 i i i i i CONSTRUCTION SPECIFICATIONS SECTION 16 SEEDING AND MULCHING 1. Description Seeding and mulching is used to provide permanent or temporary stabilization to areas of disturbance. This operation consists of site preparation, soil amendments, seedbed preparation, seeding and mulching. 2. Materials 2.1 Seed Mixture The Contractor shall apply seed at the mixture and application rates indicated for the areas noted in the following specifications. A conservation seed mix of comparable formulation may be used only if the label is provided to the Project Manager for approval prior to seeding. a. The Contractor shall apply seed at the following mixture and application rate for Seeding Zone 1 - Stream Banks and Upper Point Bar Areas as shown in Table 16a. Species Application Rate Lbs/Acre Application Rate Lbs/1000 S Ft. Redto 1 .02 Roughstalk Bluegrass 1 .02 Rye 60 1.4 Table 16a. Seed Mixture and Application Rate for Seeding Zone 1 - Stream Banks and Upper Point Bar Areas. b. The Contractor shall apply seed at the mixture and application rate for Seeding Zone 2 - Floodplain and Riparian Buffer Areas as shown in Table 16b. Species Application Rate Lbs/Acre Application Rate Lbs/1000 S Ft. Little Bluestein 3 .07 Deer tongue 3 .07 Wildflower Mix 1 .02 Wheat 60 1.4 Table 16b - Seed Mixture and Application Rate for Seeding Zone 2 - Floodplain, and Riparian Buffer Areas 52 c. Wildflower Seed Mixture should include the following species: ' Echinacea purpurea Rudbeckia hirta Coreopsis lanceolate i Asclepias tuberosa Coreopsis tinctoria Liatris graminifolia d. The Contractor shall apply seed at the mixture and application rate for Seeding Zone 3 - all disturbed areas outside of the immediate restoration work area (e.g., temporary access roads, dewatering diversion pathways, stockpile and staging areas, etc.) as shown in Table 16c. Species Application Rate Lbs/Acre Application Rate Lbs/1000 S Ft. Annual Ryegrass 40 .92 Tall Fescue 200 4.6 Table 16c. Seed Mixture and Application Rate for Zone 3 - Disturbed Areas Outside of Restoration Work Area. e. Tall Fescue shall be from a seed variety with low endophyte content, such as Stargrazer, Martin, Mozark, Penngrazer, Phyter, Forager or an equivalent. 2.2 Soil Amendments a. Fertilizer composition and application rate shall be as outlined in Table 16d below. Fertilizers shall be of uniform composition and shall be suitable for accurate application by approved equipment. Fertilizers shall be delivered to the site in the manufacturer's packaging, and shall meet all applicable state or federal laws related to labeling. The manufacturer's name, fertilizer formulation and other required information should be clearly marked on the packaging. b. When lime is required, the materials shall be ground limestone, hydrated lime or burnt lime. Lime materials shall contain a minimum of 50% total oxides and shall be ground such that 50% passes a 4100 mesh sieve and 98 -100% shall pass a #20 mesh sieve. Lime shall be incorporated into the top 3 - 6 inches of soil by disking or other suitable methods. If lime is required it shall be applied at the rates indicated in Table 16d below. Soil Amendment Application Rate (Ibs/acre) 10-20-20 Grade Fertilizer 500 Ground Agricultural Lime 2000 Table 16d - Soil Amendment and Application Rate 53 2.3 Mulching ' a. Straw Straw mulch shall consist of well-threshed wheat, rye, or oat straw and shall be reasonably ' bright. Mulch must be free of mold and noxious seed and shall not be musty, caked, decayed, or excessively dusty. b. Wood Cellulose Fiber Mulch',(WCFM) ' WCFM shall consist of prepared wood cellulose processed into a uniform fibrous physical state, and shall contain a dye to facilitate visual inspection of the uniformity of the I application. WCFM shall not contain germination- or growth-inhibiting factors. 3. Installation Methods ' 3.1 Site Preparation ' a. Prior to the start of operations, the Contractor shall install all erosion and sediment control measures as described in the Construction Specifications and shown on the Erosion and Sediment Control Sheets in the Construction Drawings. b. The Contractor shall perform all final grading operations at right angles to the slope. Final grading and shaping may not be required for temporary seeding. ' 3.2 Seedbed Preparation, Temporary Seeding a. For temporary seeding, the Contractor shall prepare a suitable seedbed by loosening the ' soil to a depth of 3 - 6" by means of suitable equipment. b. The area shall not be rolled or smoothed. On slopes greater than 3:1 the surface shall be ' tracked with heavy equipment such that the surface is irregular with track ridges running parallel to the slope contour. ' 3.3 Seedbed Preparation, Permanent Seeding a. The Contractor shall loosen all disturbed areas to a depth of 3 - 6". In areas where ' repeated access by heavy equipment or trucks has caused compaction, the Contractor shall loosen the soil to a depth of 12". The Contractor may use agricultural or construction equipment to perform the task. I b. The Contractor shall conduct final grading of all disturbed areas in conformance with the Construction Drawings. All surfaces shall be smooth and free of large rocks. I c. On sloped areas (greater than 3:1), the Contractor shall use track equipment to compact the slope and produce ridges parallel to the slope contour. ' d. When topsoil has been stockpiled during the construction of the project, the Contractor shall spread the topsoil on the disturbed areas after the soil has been loosened and rough grading completed. I 4 54 7 7 e. Apply soil amendments as described in Section 2.2 of these specifications. Mix amendments into the top 3 - 5" of the topsoil by disking or other suitable means. f. In lawn areas as shown on the Construction Drawings, the Contractor shall rake the seedbed surface to remove rocks and other large debris. The surface shall be clear of obstructions and debris and must be suitable for mowing upon establishment of the seeding. 3.4 Seed Specifications a. All seed must meet all applicable state and federal regulations and must include labeling indicating the supplier, formulation, germination rates, and seed date. Seed may be subject to retesting by a certified lab. The Contractor shall submit a copy of the seed label for approval by the Contracting Officer. ' b. When inoculates are required for legume seed, they shall be provided by the same supplier as the seed. Inoculates shall be fresh and viable and must not have exceeded their expiration date. The Contractor shall apply they in accordance with the ' manufacturer's recommended application rate and procedures. In hydro-seeding operations, inoculates shall be applied at a rate four times (4x) the recommended rate. ' c. The Contractor shall use a seed mix and application as set forth in Tables 16a, 16b and 16c of this specification. ' 3.5 Methods of Seeding a. Hydro-seeding: the application of a combination of seed, fertilizer, and mulch in a slurry mixture. 1) If fertilizer is applied at time of seeding, the application rate will not exceed 100 lbs/ac nitrogen, 200 lbs/ac phosphorous, and 200 lbs/ac potassium. ' 2) When lime is to be applied by the hydro-seeder, the rate shall not exceed 3 tons/ac burnt and hydrated lime shall not be used. ' 3) Hydro-seeding mixtures shall be prepared on site and applied immediately. No seed/mulch mix that has been left in the seeder for more than eight (8) hours shall ' be used. b. Dry Seeding: this includes the use of conventional drop or broadcast spreaders. ' I ) Dry seed applications shall be incorporated into the subsoil at the rates prescribed in Tables 16a and 16c of this specification. 2) After seeding, the Contractor shall use a weighted roller over the area to provide for good seed-to-soil contact. ' 3) Where practical, seed shall be applied in tow directions perpendicular to each other. Apply half the seeding rate in each direction. 14 55 J 11 c. Drill/Cultipacker Seeding: the use of mechanized spreaders that apply and cover seed with soil. 1) Seeding completed with a cultipacker shall bury the seed to the depth specified in by the supplier and the seedbed must be firm after planting. 2) Where practical, seed shall be applied in tow directions perpendicular to each other. Apply half the seeding rate in each direction. d. Hydroseeding and dry seeding may be utilized for broadcasting the seed mixes in Seeding Zones 1 and 3. However, seeding the warm season grasses and wildflower mixes designated for Seeding Zone 2 (i.e., upper stream banks, floodplain, and riparian buffer areas) must utilize a drill or cultipacker. 3.6 Mulching Application a. All areas shall be mulched immediately upon completion of the seeding operations. Mulch shall be applied so as to provide a uniform cover on all seeded areas. b. When straw mulch is specified, the Contractor shall provide for anchoring of the mulch. Anchoring may be accomplished by mechanical equipment designed to punch and anchor mulch or by the use of a liquid binder. c. When liquid binders are used, they shall be applied at a uniform rate as provided for in the manufacturer's directions. The Contractor shall provide the Contracting Officer with a copy of the manufacturer's literature prior to the use of any liquid binder. ' d. Permanent mulch shall be applied at the rate shown in Table 16e of this specification. e. In areas where plant materials such as fascines are to be installed at a later date, the ' Contractor shall apply a heavy layer of mulch to provide temporary protection to the disturbed surface. Temporary mulch shall be applied at the rate shown in Table l6e of this specification. I Mulch Application Application Rate Lbs/Acre Application Rate Lbs/1000 S Ft Temporary Mulching - 2000 45.9 Permanent Mulching 1500 34.5 Table 16e - Mulching Application and Application Rate ' 4. Measurement and Method of Payment ' Seedsing and mulching will be measured and paid for at the Contract price per acre of area seeded and mulched. The payment will be full compensation for all material, labor, equipment, tools, and incidentals necessary to complete the work. 56 J 5. Special Conditions ' Under this Contract, the Contractor shall use wood cellulose fiber mulch in the hydro-seeding operations. The Contractor may substitute manufactured, recycled paper mulch, if such mulch has been developed specifically for hydroseeding and meets the conditions set fort in this ' specification. J END OF SECTION 57 n L CONSTRUCTION SPECIFICATIONS SECTION 17 PLANTING TREES AND SHRUBS 1. Description This work shall consist of furnishing and planting trees and shrubs and all plant establishment operations as specified in the Contract Documents and shown on the Planting Plans or as directed by the Project Manager. Transporting, and installation of plant material shall take place when plants are dormant (December 1 through April 1). Prior to the start of work on this item, the Contractor shall submit a proposed planting schedule, including source of plant material to the City and the Project Manager for review. No work shall be performed until the City and the Project Manager approve this schedule. 2. Materials ' 2.1 Plant Material ' a. All plant material shall conform to the current issue of the American Standard for Nursery Stock published by the American Association of Nurserymen. b. Plant materials must be selected from certified nurseries that have been inspected by state ' and/or federal agencies. Nursery inspection certificates shall be furnished to the Project Manager upon request. ' c. Plant material collected from the "wild" is prohibited. d. Container grown stock shall have been grown in a container long enough for the root ' system to have developed sufficiently to hold its soil. Roots shall visibly extend to the inside face of the growing container. All container plants shall be grouped and watered daily until they are planted. ' e. The Project Manager may reject plants damaged in handling or transport. 2.2. Substitute Plant Material If a substitute is selected, it must be native to the North Carolina Piedmont Region and of the same size, value, and quality as the original plant. 2.3. Preparation ' a. The live plant material shall be transported to the construction site within three (3) of delivery from the nursery. ' b. Live plant materials must be protected against drying out and overheating before/during transport (e.g., they shall be covered transported in unheated vehicles, moistened, kept in soak pits) and on-site prior to installation (e.g., by storing in controlled conditions, storing in shade, covering with evergreen branches or plastic, placing in moist soil, or spraying with 58 t anti-transpirant chemicals). Live materials shall receive continuous shade, shall be sheltered from the wind, and shall be continuously protected from drying by being heeled into moist ' soils. Where water is available, live stakes shall be sprayed or immersed. 3. Installation Methods ' 3.1 Planting a. The Contractor shall refer to the Plant Schedules and Composition Schedules on the ' plans for specific spacing requirements. b. The Contractor shall use the Overall Spacing figure to determine the spacing between ' each species of vegetation strata. The Contractor shall use the Individual Spacing figure to determine the spacing between each plant of the same species. ' c. The Contractor is not required to stake out each individual planting pit. However, upon planting a typical 50-foot X 15-foot area within each planting zone, the Contractor shall have the City or Project Manager inspect and approve plant spacing techniques prior to proceeding. 3.2 Clean Up ' a. During planting all areas shall be kept neat, clean and free of all trash and debris, and all reasonable precautions shall be taken to avoid damage to existing plants, turf, structures ' and private property. b. Remove all tags, labels, strings, and wire from the plant materials, unless otherwise directed by the Project Manager. ' c. Final cleanup shall be the responsibility of the Contractor and consist of removing all trash and materials incidental to the project and disposing of them off-site. 3.3 Plant Establishment ' a. The Contractor is responsible for maintaining an 80% plant establishment success. rate at the end of the one-year plant establishment period. The Contractor is responsible for replanting all areas not meeting 80% survival. The 80% plant success rate shall be ' based on each of the Planting Sections (Stream Banks and Riparian Buffer: Zone I - Stream Banks in Crossover Reaches and Upper Point Bars, Zone 2 - Stream Banks in Meander Bends and Zone 3 - Riparian Buffer; Storm Water Wetland/Water Quality Ponds: Zone 2 - Shallow Marsh Fringe and Zone 3 - Islands and Riparian Fringe; and Floodplain Wetlands: Zone 2 - Shallow Marsh Fringe and Zone 3 - Islands and Riparian Forest) of the project's plant material achieving 80%. ' b. The Contractor will not be responsible for plant material that has been damaged by vandalism, fire, flooding, or other activities beyond the Contractors' control. ' 4. Measurement and Method of Payment Planting trees and shrubs will be measured and paid for at the Contract price per each item ' specified in the Contract Documents. The payment will be full compensation for all material, 59 CONSTRUCTION SPECIFICATIONS SECTION 18 INSTALLING WETLAND EMERGENT PLANTS 1. Description This work shall consist of furnishing and transplanting emergent wetland emergent plants and all plant establishment operations as detailed on the Planting Plans and outlined in these specifications. Transporting, and installation of plant material shall take place during the transplanting season (March 15 through June 1). Prior to the start of work on this item, the Contractor shall submit a proposed planting schedule, including source of plant material to the City and the Project Manager for review. No work shall be performed until the City and the Project Manager approve this schedule. 2. Materials ' 2.1 Plant Material ' a. All plant material shall conform to the current issue of the American Standard for Nursery Stock published by the American Association of Nurserymen. b. Plant materials must be selected from certified nurseries that have been inspected by state ' and/or federal agencies. Nursery inspection certificates shall be furnished to the Project Manager upon request. ' c. Plant material collected from the "wild" is prohibited. d. Container grown stock shall have been grown in a container long enough for the root system ' to have developed sufficiently to hold its soil. Roots shall visibly extend to the inside face of the growing container. All container plants shall be grouped and watered daily until they are planted. ' e. The Project Manager may reject plants damaged in handling or transport. 2.2 Substitute Plant Material ' If a substitute is selected, it must be native to the North Carolina Piedmont Region and of the same size, value, and quality as the original plant. 3. Preparation ' 3.1 Standing Time a. After construction is complete and the final elevations of the floodplain wetland and storm ' water wetland/water quality ponds are attained no further activity should take place until the following planting season (Spring 2004). During this standing time the wetland will experience storm flows and inundation, allowing the Project Manager and the Contractor to 61 verify water depths and planting zones and to determine whether the final grade and wetland microtopography will persist over time. b. At the onset of the planting season, the wetland should be surveyed and staked. Water depths should be measured to the nearest inch. Planting zones (i.e., areas of more or less uniform depth) should be marked on the as-built plan and located in the field using stakes or flags. 3.2 Dewatering As a dry wetland is easier to plant, the storm water wetland/water quality pond drains should be opened at least one week prior to the planting date. 3.3 Transport and Preservation a. Post-nursery care of wetland plants is very important. The wetland plants shall be transported to the construction site within three (3) days of delivery from the nursery. b. Live wetland plants must be protected against drying out and overheating before/during transport (e.g., they shall be covered transported in unheated vehicles, moistened, kept in soak pits) and on-site prior to installation (e.g., by storing in controlled conditions, storing in shade, covering with evergreen branches or plastic, placing in moist soil, or spraying with anti-transpirant chemicals). Live materials shall receive continuous shade, shall be sheltered from the wind, and shall be continuously protected from drying by being heeled into moist soils. Where water is available, live stakes shall be sprayed or immersed. 4. Installation Methods 4.1 Planting a. One plant species should be planted within each flagged planting zone based on its approximate depth requirements. b. Individual plants should be planted 18 inches on center within each single species cluster. c. Peat pots and containers should be broken to allow root penetration, and tamped firmly into the wetland substrate. d. Damaged plants should be removed and replaced. e. Shortly before the completion of planting, the pond drain pipes should be closed to allow the wetland/water quality ponds to begin filling. 4.2 Cleanup a. During planting all areas shall be kept neat, clean and free of all trash and debris, and all reasonable precautions shall be taken to avoid damage to existing plants, turf, structures and private property. b. Remove all tags, labels, strings, and wire from the plant materials, unless otherwise directed by the Project Manager. 62 ' c. Final cleanup shall be the responsibility of the Contractor and consist of removing all trash and materials incidental to the project and disposing of them off-site. ' 4.3 Plant Establishment ' a. The Contractor is responsible for maintaining an 80% plant establishment success rate at the end of the one-year plant establishment period. The Contractor is responsible for replanting all areas not meeting 80% survival. ' b. The Contractor will not be responsible for plant material that has been damaged by vandalism, fire, flooding, or other activities beyond the Contractors' control. ' S. Measurement and Method of Payment Planting wetland emergent plants will be measured and paid for at the Contract price per each ' item specified in the Contract Documents. The payment will be full compensation for all material, labor, equipment, tools, and incidentals (including watering during the construction period) necessary to complete the work. END OF SECTION i i 63 CONSTRUCTION SPECIFICATIONS SECTION 19 INSTALLING LIVE STAKES 1. Description This work shall consist of harvesting, transporting, and installing live stakes into the subgrade along the stream banks of Salem Creek and the Tributaries, as specified on the Construction Plans, these specifications or as directed by the Project Manager. Harvesting, transporting, and installation shall take place when plants are dormant (December 1 through April 1). 2. Materials 2.1 Live cuttings for live stakes shall be one-half to one and one-half inches (0.5" to 1.5") in diameter and between two and three feet (2' to 3') long. Side branches shall be removed and the bark left intact prior to installation. 2.2 Buds on the stakes shall be oriented in an upward position. The basal ends shall be tapered to a point for easy insertion into the soil. The top shall be cut smooth and square. 2.3 Live stakes shall consist of a mix of three or more of the following species, with each species comprising no more than 50% and no less than 20% of the mix. Corpus amomum Cornus sericea stolonifera Salix nigra Salix purpurea Silky Dogwood Red Osier Dogwood Black Willow Streamco Willow 3. Construction Methods 3.1 Harvesting The source of all live cuttings shall be located on-site or within fifty (50) miles of the project site. The Contractor shall be responsible for harvesting and transporting the cuttings to the job site. 3.2 Live Material Preparation a. All cuts shall be smooth and the cut surface kept small. The use of large pruning shears or power saws may be required. b. The live materials shall be transported to the construction site within eight (8) hours of harvesting and then cut to size, as specified above and on the details. c. Live materials must be protected against drying out and overheating before/during transport (e.g., they shall be covered transported in unheated vehicles, moistened, kept in soak pits) and on-site prior to installation (e.g., by storing in controlled conditions, storing in shade, covering with evergreen branches or plastic, placing in moist soil, or spraying with anti- transpirant chemicals). Live materials shall receive continuous shade, shall be sheltered from 64 the wind, and shall be continuously protected from drying by being heeled into moist soils. Where water is available, live stakes shall be sprayed or immersed. d. Live materials shall be installed the same day that the cuttings are harvested. If installation of live materials cannot be accomplished on the same day and storage is required, live materials shall be stored for a period no longer than three (3) days. 3.3 Live Stake Installation a. Live Stakes shall be installed according to the Sequence of Construction, the plans and details, and the following specifications. b. Erosion control fabric should be placed on the banks prior to installing the live stakes. c. Insert the point of the stake through the fabric and tamp it into the ground at a right angle to the slope. d. The live stakes should be installed 5 feet apart using triangular spacing. e. Buds should be oriented up. f. Four-fifths of the length of the live stake should be installed into the ground, and soil should be firmly packed around it after installation. g. Do not split the stakes during installation. Stakes that split should be removed and replaced. h. An iron bar can be used to make a pilot hole in firm soil. i. Tamp the stake into the ground with a dead blow hammer. 3.4 Clean-up a. During installation of the live stakes, all areas shall be kept neat, clean and free of all trash and debris, and all reasonable precautions shall be taken to avoid damage to erosion control fabric, and graded slopes. b. Final cleanup shall be the responsibility of the Contractor and consist of removing all trash and materials incidental to the project and disposing of them off-site. 3.5 Plant Establishment a. The Contractor is responsible for maintaining an 80% plant establishment success rate at the end of the one-year plant establishment period. b. The Contractor will not be responsible for plant material that has been damaged by vandalism, fire, flooding, or other activities beyond the Contractors' control. 65 4. Measurement and Method of Payment Installing live stakes will be measured and paid for at the Contract price per each live stake installed. The payment will be full compensation for all material, labor, equipment, tools, and incidentals (including watering during the construction period) necessary to complete the work. END OF SECTION 66 10 40 • 0 111 z o ? SALEM C% liv INS TON V INDEX Plan View Index Plan View Thalweg Profile Cross Sections Grading Typical Details Planting Plan Sediment 8 Erosion Control Details Storm Drain Details Storm Water Wetland/ WQ Pond Details 030885 Sheet 2 Sheets 3 -13 Sheets 14 - 31 Sheets 32 - 81 Sheets 82 - 84 Sheets 85 - 89 Sheets 90 - 98 Sheets 99 -105 Sheets 106 -108 CREEK @ CIVITAN PARK -SALEM, NORTH CAROLINA W CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 Vicinity Map -155 ?-- t+00 -Pry ,-- 0- wlL w/L_ RE? -- LOD-- Survey Sheet 1 I 0?? _LcV 11/44 e&*p 4tp MAP SYMBOLS Proposed Contour Thalweg Station Power Line Sanitary Sewer Storm Drain Water Main Existing Woods Cross Vane Rock Vane Rlprap Outfail Limits of Disturbance M C) co ?co W co WN d n`Zi W XN 01Q'NU ma 0 fill U as T q tl o a 0 ab'v a ,g ? a q b A ? 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Surve t 2 of 65 a zoo o zoo 400 600 CLEAR CREEKS CONSULTING 1317 Knopp Road, Jazrettsville, Maryland 21084 (410) 692.2164 9u ?r+a ra, Scale) 1' = 200' wt oozolFC1 Party Beg, Date End Date TB, DC, RV 1/OS/OS 4/18/01 PRECISION JAB No, 1.32,260 00201fc1 1 0 p 1 I p p 0 1 1 O \ ` 1 Planned Thalweg`,, ASta. 0+00 c a, o \?? y Base Line o ? Sta 0+00 Elev, 759,19 A i 7\16 h?> ? o- 0 ? \z Martin Luther King Drive Bridge Z q "1, 7\ ? ` i 7 l Cross-sectio h / Headwal 30" CM Storrs Water ? Source U tZS ?/' Manhol n 1\\\ X11`, CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 A \\ ?\\ 4 i ToD-'of v/L \? y Etc: v. 759,44 A ? \?? I d ?, Base Line \ - - _Sta, 3+00 v i Xi, 40 0 40 80 120 Scalei 1' = 40' gg??3 ' 3 J3 M 4 N cm J (L LU a q o Cd 0 d0 a ? U a U m Survey Sheet 3 of 65 0 1 1 p 6 9 0 1 1 1 1 / / Tb?of G Th44eg` \ O O Parking Loth Parking Lot Xl\\\\ W CLEAR CREEKS CONSULTING 1317 Knopp Road, jurertsville, Maryland 21084 (418) 692-2164 40 0 40 80 1 \ Y20 Scale) 1' = 40' 36" Water Line Devation Unknown 7 'r 4 z ` lanned halwe `a 1 J i i LinJ a e 7\ 9 r I I ??, I 11 K) a :4 1' ~ 7 ? n O I we I I J ? a r I F `I r i I l 9 Marlhol 100 ET Ln F Surve S Ae of S ? M W co .j r- N Go J ON 3 az W a U ,0 0 m ?z m a N ? q Fr U bp r ?+ ( as i 0 0 10 0 7 0 0 p 6 I i 1 r ater LirE Stora ater nlet ' in of Sewer Line_ Ur -down fxisfing Fo tiorid � n rscn Bldg arking Lot �j ES MYN i s aiA N 1 1 t 40 CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 0 40 a pan Ln 1 Ln 0061 V 1 9 t U! , nk I Bame i e rt S 1 + 9, E V. 8.2 i r a all .�1`u11e 1 — Iru IM M - \ CD N co C d QZ u ---- N U% a C 5 r o � CN ' O T an v>,�Ncc / er o a r Line o i Rellaind r to b S' located during r r r6n ,.�N•► a z o ► a 3 0 � i' MA 0 10 G UPI z r u Z r, r b t rly #1 o aw°'� A lan d T dlw b C to iu nc ) !06 A 9 in urvey Sheet 6 of 65 REVISIONS APPROVED 00201M 1 ,it al �ltUI■ PRO i I /UY v�1041 i W Y/L (4 —V/ -- --y i _YrL_ i I /UY v�1041 i W Y/L (4 —V/ -- --y i _YrL_ z [an ha e \ r P 1 1 ' d e Ory #1 E �' z s ! n CI a d halweg, im B ch o b , v�1041 m isE z b CL L) a ■ Tei i oss-se.ct_ion a� PC Survey Sheet 8 of 65 UTE 1 AP TM: D0201FC1 wA ` ' D 1 1 1 r 9 D 0 9 9 a 0 D 1 9 9 a a D 1 0 D 1 6 6 0 9 a 0 9 1 6 9 0 1 6 0 9 a 0 9 0 1 6 9 P 1 1 1 1 P 1 1 A r Of ? C 4) N J a ?J N V 3 a c Z a t a it R W X N s5 w 04 01 N ma i o -- ----- ----- - --- ----- - -- ----- ----- - P4 PL d T l q 0 n e a eg ti 0 M ?z 71 Ncx? to 1' :1+52 8 P 1 , St a, 15+38,E vM ? b 73J O ?Fa ' U q Supplemental Survey c 9 Sheet 9 of 31 U CLEAR CREEKS CONSULTING d s 3 °- u? 1317 Knopp Road, Jarretm lle, Maryland 21084 (410) 692-2164 REVSKM REk w o...? 00201M M1 r I I I I j 76 T p f Le k , t i - I 7s so 75 55 75 50 ? 1. E is in G o nd ? 7 ? j -- 45 C o s- e tl n 9 I S a, 14 1 i ? s W 7 40 ? rossetin#6 C o s-eti 9 I j rssscton#1 Sa,1418 z 73 I 35 O O O O O O O O O O O O O O D N to f? co O1 O N M at i!1 w r ? 01 O N M 10, N t0 f? ? 01 O N M t t + t t t t } } ? t t ? t t t + + + t } + + } t + } } } M M M M M -q- th v ? ? ? It W) Lc) itI iL1 N N if1 N ? ? tG 10 m to 1 i 0 0 a 0 1 1 1 1 1 1 11 b r 0 o of an 76 nn eL 60 - -- L i T___ I L t- 755 1 I I c+ C4 75 50 744 ----- --- ? ---- ----- ----- ---- .?? --- ----- ---- \ I 45 ---- ----- ----- ---- 5 ll a 7 40 Pl nn d Th lw g Ex ist ing Gr ,ou nol I 73 35 r ss s ct on #1 3 -01 r ss s ctl n #1 S l a, 20- -16. 6 i St , 2 0+19 9- 730 m O N M N top F*- co m O O N W) u7 tp r m 01 O - N M ? N m r + + + + + + + + + + + + + + + + + + + + + + + + + + + + + a m °r M °f °r °D w °r o 0 0 0 0 0 0 0 0 o r r r r r r r r '- r '- r r r r r N N N N N N N N N N N N N N N N N N ACLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 Supplemental Survey Sheet 11 of 31 r-3 o? RElll CM c J J ty)N ?aaz Y CO w t c o J?II p; z 0 ° .r OC 0 m o a z co awO cd ' Q A1 A4 + cd Iw d ..A 4 Ui a? N U 0 1 1 1 1 9 p 0 0 9 11 C 1 9 0 a a 0 D p D 0 1 1 p 0 0 0 0 p 0 D p 0 0 a 0 0 0 0 0 0 0 0 1 p 0 a 0 1 0 0 6 0 D 0 a a 6 0 a 0 a a C 0 1 a 0 a 0 0 1 9 0 0 • D 6 cm cf) C rn co N J 00 BO co Q1 N 05 7 a EZ? CL ' BO 00 ) N U dY? m? _ o 79 95 Of n 2 w M 90 p1 w N ( A 76 85 m a 7B 80 77! 4 t4 t.A- p 75 i 77 W ate r u fa e 70 76 -- 65 76 C - -- 2=2 ?- 60 - --- ? '??. 75 -- ----- --- .. 55 i3 75 .?.. 50 744 1 - - - 45 7 Ex ist ing 1 ' Mp 74-01 73 35 r P z 73C 730 b 72 Ex stl g Cr s -s c to 25 c + r a2 72 20 71 715 710 1 710 p? 70 _ 05 70 I A 00 ? ® 69 B se Li e St + 44 95 69 - - I I 1 1 1 1 1 90 x a4 v - 0 0 0 0 0 o O o 0 0 0 0 o N O N M7 It N tD r go 0) O r N M 1-t to to t` to ch O N M O to O O p O O O O O O O O O + + + + + + + + + + N eo m fd m.a -7 N N N N N N Qt tp p A m a b Survey Sheet 39 of 5 ?? cod CARO ? E, to a U w 0 s Z 0. ,. -3 L 3, ti V (D 9 A?-?" . W ? CLEAR CREEKS CONSULTING U 1317 Knopp Road, jarrettsville, Maryland 21084 (410) 692-2164 oc- 26e> rn o 2 o oini 0 D D 0 r 0 i D 6 0 0 0 0 p D 0 a 0 D D 0 • • 0 0 i 0 11 L 0 9 0 a a r 0 I 1 1 0 1 D 0 0 i 80 05 8 00 79 95 79 90 78 85 78 80 77 5 77d 1 70 76 E xist ing W at er Su rf ce 65 76 60 75 75 50 74 -- - ----- - - - --- 45 74d I 740 73 35 73 xi tl r s s tl n 30 72 25 72 20 71 715 71 710 70 05 70 69 L 95 69 go o n o n o n a o m o h o n o e o o O O N N A m o o p? R p p o n o a } } A A O O N N A M7 w Yf O p ° P n ° O A A YI CI ° m n n $ O O C + + + + + + f + + + + + + + + + + + f N N N N N N N N N N N N N N N N N N Supplemental Survey Sheet 16 of 31 CLEAR CREEKS CONSULTING 1317 Knopp Road, jarrettsvdic, Maryland 21084 (410) 692.2164 4J ? w ? C Q- It) a I M M J mMN? co ?N Oaaz m Je (0 C1 '? 0 M a: 0 0 a x a o cm- 0 c M x14 93 ?" x Oo 5A L! m Qy 0-1 A q?dm b L) ° ?qm U s m 1 0 I 1 0 1 p 0 p I 80 05 801 i 00 79 95 79 90 76 85 78 80 77 75 77 W t r u fa e 770, 76 65 76 ---- ----- ----- ---- - 60 75 --- ----- ---- - - 55 75 50 45 74 Ex st n 18 CP 40 73 St r wa a pe 35 73 30 72 Ex st n C os - ec Io 25 72 20 715 715 71 710 70 05 70 t r W to ipE # 5 r SS S Ct on 00 59 a e a 95 69 90 0-40 0-30 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 o+BO 0+90 1+00 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 Survey Sheet 43 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettstiille, Maryland 21084 (410) 692-2164 / "oun". - gyp, R? WN+ 4$ o,!?- iDg ? M J tmN 7daz U Y N M CC) W W04 -4) a1 N fA ma U U .r, 0 z a ? o a o ? m pG i M9?4 anCD Qr?O? A ?QUm b -4j "k? CL) w U m 00201M 0 D 0 0 P D 10 1 r 1 1 I C1 M a Z u> N 0Y?vrn c ?p ? W m 40 om 0 1 N+' ma p; z 50 b q 2 oI? M = z ba ? ? 0 + ? d a? 0 1 1 1 1 1 I_++] 90 540?? a N b?®m b F Supplemental Survey 0 Sheet 18 of 31 L) 00®am .1 i w m a ??o b ?' a? w tl F ? U d N CLEAR CREEKS CONSULTING - 9 U S ? 1317 Kno Road, arrettwdle, Maryland 21084 PP 1 (410) 692.2164 RMSIONS mom OOZDIFCI I MOM M ? --- --- -- --- -- --- -- --- --- -- --- --- -- --- --- --- --- --- --- --- - - B6 85 60 B5 55 B4 50 g 45 83 63 I I 35 82 30 B2 25 815 20 B1 815 BO 810 80 05 79 00 79 3 ' a r M l 90 78 E l e a n n n n 7B T it 85 77 eo 77 75 76 70 76 _ 65 60 75 55 _ 7 73 ? 73 35 72 30 72 ? i n o s e o 25 715 20 710 715 70 710 70 05 g9 00 69 95 O N N D IA O O N O O N O N N N ? A yy? ? ? pp N N N O tC N m O P N P ? D D W p1 O O O N O D N O N N O M N M p Y1 O O O N O h O N O in p IA O O O N o N ? N O If1 O in o N O h p N O N O in in p in O d o o d d d o o d d d d d o d d d o # o d c o o ? ± ± ± ± N ? 7 ± 7 ? f ± w ? O ? O ± m + m r r ? + ? + O O + O + O + '+ + N + N + M) + ? + + + + + N O + + m r + n m m A 01 O D + + N N ? Y ? ? H t0 O rp O P N P O ? O m O OI O Ol S r , ± ? ± ? r ± ? N N N N N N N N N N N N N N N + N + N + N + N + N } 19 } I? M7 ? } 17 19 + P1 + M Ih M + + h } 1?1 + MI + !7 + h M7 + + M + h } M + 7 7 o? 30 ., 'ww 10 A b 1 D 0)M CY) r0 ,? J U1 1 ? N J 0) 815 C Z a a U ) 810 Y m ' ° ? 805 c ) m 05 W x a 00 N N 795 m a 95 s0 i. 85 7aq 80 77E Wa kin g 71 ra I. Wa? er Su rf aCE 75 7 0 65 7 1 60 - 55 50 45 ? p Rr G. U x " 40 C o a 35 73C Mml ^ 30 1 1 225 CD 72 715 710 4 - nr p 3as H e ir s e ee- Sta . 77 11 C). 9 20 715 .r z . zm ??m+ 710 70 1 f ± - 05 7 70 : 7 7 ?o °" a 00 0 V) n a N N N N Survey Sheet 2 8 of 65 CARO?, a W.,MA&CLEAR CREEKS CONSULTING r?SUR R W, 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 ?J d o? S1?g ®? Fr a aa 41 a ,5I? a Uq;, q m ?RU CD ? m a L "a a ..,..? 00201FCI ir. 0 0 0 0 D 6 P CM CC) C 0) W in '00 r-- 850 850 -J U N 84 1 40 0 1 ` CO LO 4)CY) 83 c) 830 M ' W CN 2V 82 - 0 10, cc « R N N 820 m a 810 810 80 800 I 79 j 790 7B 780 77 770 I I 76C - - 760 5 --- ---- ----- ---- - --- --- ----- ----- --? --- 0? - - --- --- -- --- ---- ----- - - I ? i 750 ? - =-7 ---- -- - -- O 74 ? I I 740 F i p v z , 73 11 3' S we LI a 730 6 ? 72J 1720 o 1 a xis ing Cr ss- ec ion E -4 4 o m 710 710 M ? 4 ? I I ? q 70 ? ? I Ri o eo 700 x e? 69 690 y o E, + 68 580 6 7 ? Nli Pik w N O S O N Yf m S } } + } + } } } O O O O O O o O p O O p O p O O O O p o O O O O m ro r S p O N P) Y $ co P m O O N A in + O O O 70 m n O as id ^ p - A b d d 0 O O O O O 0 O O + + + + + O + + + + + + + + + + + + + + + + + + + r 11 1 N N N N N N N N N N MI M1 Pr) + Pco ? m 'd ? k Supplemental Survey -41 Sheet 19 of 31 q ® ?`4 cu U bp d d ( f ? V CLEAR CREEKS CONSULTING ?S 4 O) 1317 Knopp Road, Jarrettsvdle, Maryland 21084 (410) 692.2164 w 0?LL 52 . ? REVISIONS Mu a.ti 1 1 1 1 0 D p 0 a 840 --- --- --- -- --- --- --- --- --- --- --- --- --- J --- --- --- --- --- -- --- --- --- --- --- --- --- --- --- -- --- --- --- --- - --- --- --- --- -------- 840 83 ?30 82 20 81 610 8Q 00 79 90 76 l 3 v ' t o a e k M o i ln i r l 4 4 -? fio 77 70 t 7s - 60 ... ..... ..... . 750 7 40 73C I E l t 8 e r P pl ? 30 E l tl r s s tl 72 20 710 710 70 00 69 90 Vi n 68 80 67 70 66? O O g D O D O O 4i6o O O O O O O O O O O O O O O g O N O O 00 O p p N m h co 9 p O p p + + '+ + 0 ?0 + D + p N P 0 W rt N R 0 UI 0 o O o o C+ o D+ o + + + + + + + + + + + + + + + + + + + + + + + + + + + + F r .- r N N N N N N N N N N n in n rq fn p n p Survey Sheet 30 of 65 UCLEAR CREEKS CONSULTING or 1317 Knopp Road, ]arrettsdie, Maryland 21084 (410) 692.2164 V3 -2 °s . m? J ?N 3 a a U cZ N ?N m 'a a1 10 « ce) W x04 -0 N r m a rn f_ 0 0 0 p; z 0 m m ? m Nm zjin 0+ 0 41 Wo?®v m a wo ? a 'd 0 m ®qm .? 9 U ,?, 1 i 0 1 D b 1 1 6 815 815 810 I 810 so ? 05 8 QO 79 95 79 90 78 85 78 80 77 al In ra 75 77 W t u fa e 70 76 65 76 - 60 55 75 50 - 745 7 , 40 73 Exi sti ncL 18 S w r I 35 73 a e in Ex stl Cr s -s c to g 30 72 25 72 20 7151 1 715 7101 Cr s s c io 11 710 7 0 la n d h 1 w g S t . 16 5 05 17D? 3a se i e 00 U -in O O N M N r co O O O O O O O O O O O O N M It in O n m O O N M ,n m r pp + + + t + + + + t + + + + + + + + t + O D O O O D O O O O N N N N N N N N N Survey Sheet 31 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 2) 1084 (410) 692.2164 L 9 L 5?? 54- 0?1 4-31)5 0),00 J N J MN 7 a aZ , as qg N ? 4) N r N ma ?s 47 0 a x ti . C .? a7 o a z epq i ? flq as ?v cd 0 ? A 0 PC a -. b Fgg, 41 U?? m 0 ,d ? V ti U m cd cn 1 1 1 10 0 b D I 6 0 850 850 84 ? ? ?840 i I I I I 83 I B30 i 82 820 810 810 ? 80 P 00 79 xis ?? xl in W r ur a 790 a ng rai 78d Ob,,C S, 780 at 'wrJi Tro v 77 770 I 76 I 760 -- --- --- --- - --- --- -- - --- --- --- --- -- 75 - T 750 74 740 73 1 730 172J 18' Sev ier Lin Exi tin Cr oss se do 720 ? I I 1 1 I ? 1710 I 710 170 % 700 I I 69 690 I I i I 68 680 67 870 p O p 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 p 0 0 N O O O N M7 .F 0a m i0 Oi g N Pn h m P N O N n in I m n m Q+ O N n If1 m n m I C + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + O O O O O O O O O O O O N N N N N N N N N N MI in KI K7 Pn n ro n Supplemental Survey Sheet 20 of 31 UCLEAR CREEKS CONSULTING or 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 b(5 t? ieb ? M 01 as ?N? J ?N ) CLZ 0 W xN OI?C N M a 07 a z o o? M ?xm d ?m .+ o v 0 11 RI ~ ? W b q ~p C ?F 0 k .?i COD a? ? e ? U 0 F4 U cd En 00801M a 0 01 ce) 0) 630 In --- --- --- --- -- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- -- --- --- - - 830 -- -- --- --- -- -- --- --- --- --- --- --- -------- --- T---F--T -------- - --- --- -- --- --- --- --- -------- --- --- --- -------- -- --- --- --- - --- -- --- J rn N V 4 7 0 c 82 z N Z 20 ' O>Y 0 C 0 CD 810 810 l0 + X CO R 2 1a;1 N W 8 d N. . QO LM 0: co ma 79 90 l in T a l 78C 1 80 ?' a r S ur f ac le 77 70 75 i 60 -- - ---- ----- ----- - _ 7 ! 50 S 7 40 73C _ T? x s l 1 " S ew e r i e 30 E i t r s. -s ec tl on °.; 72 20 x a 71 710 0 LIM 0 70 00 :0 4 ? m 69 90 80 z ee r os s. -s e --t io N 67 M d ? a nn e l e S 70 IV p + rg ss - 4 1 so 101 *b - E L t s 50 _L_ I - - 8 + o g o o S o 0 0 0 o g o 0 0 0 0 8 0 0 g o o $ o $ o o g o o $ 0 8 0 n N n + f + f + " d 0% . pp, as ? + + + + + + + + + + + + + + + + + + + f + ? A Survey Sheet 32 of 65 ® qmmo V b ?8 t?Q+ 0 U?? o ' ? P L 'W 3 9 ? v CLEAR CREEKS CONSULTING wA+? 1317 Knopp Road, JarrettsvUle, Maryland 21084 (410) 692.2164 REVISIONS I DATE I ME . wRoom 00201FC1 low" M1r 1 0 1 1 0 b 0 0 6 840 =- ---- --- --- --- --- --- --- --- --- --- --- -------- --- ---840 ---------- --- --- --- -------- --- --- --- -------- --- --- --- -------- --- --- -- 83 30 82 20 81 + 810 80 00 79 90 78 9 l ro lL 80 77 t or o f e 70 76 60 75 - - - ----- ----- ---- -- - - - - 0 74 40 - - , 73C C K 3 -c n o s e o 30 72 20 710 710 70 00 69 90 6B 380, a w 67 a e S t F. 1 7+ 6 8. 1 70 66 50 D-30 0-20 D-10 O+DD 0+10 0+20 0+30 0+40 0+50 D+6D D+70 0+60 D+90 1+00 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+60 1+90 2+DO 2+1D 2+2D 2+30 2+40 2+50 2+60 2+70 2+80 2+90 3+00 3+10 3+20 3+30 3+40 3+50 3+60 3+70 3+80 3+90 Survey Sheet 33 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692.2164 L-34 WAS c'e- CI M .E- co N 4) J ON ?a•QZ c? m wo W x N _O cr CN N m a U 0) 0 P. x q o 0 a m U ? Z? CD v cdE+0 C t W k a? b U g Fr U ? PW4 cd m 9 b 0 6 0 6 0 1M M V, co 830 - --- -' -- --- --' --- --- T -- --- --- -- --- -- D -- --- -------- --- --- --- --- -------- -------- --- -- --- ---- ---- --- - _j CO 07 N 0 r 0--rz 82 2D ?Y??m o (0 ? 810 810 o Wo m 3 M W X N ) 0) m 80 DO N N Lm x ma 79 i 90 78 a k n tr ail Wa te r S f c BO 77 70 76 -. --- --- - B0 - -- ---- ----- ---- ----- ----- - -- --. 75 50 74 740 73 30 U 72 E l t n o s e t o 20 a z 710 710 0 0 a 70 00 0 69 90 m ? 68C C o - c n 1 fio ? x ? d e m 67 70 AL' co c>,?m+ m BBC s0 - - I J T T # = t 65 C FT I I I I - l 1 - ] E 50 "®? is . -0+30-D+20-0+10 O+DO 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+DO 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 2+50 2+60 2+70 2+80 2+90 3+00 3+10 3+20 3+30 3+40 3+50 3+60 3+70 3+80 3+90 Cc% A Survey Sheet 35 of 65 ?Ik OF o 101, 41 .54 ,d b 3 9 L,3y?? R? CLEAR CREEKS CONSULTING W, 1317 Knopp Road, Jarrettsrille, Maryland 21084 (410) 642-2164 X JS ? G, V 0 its ABC g m ca EVISIONS TrILE own OEM= o0201FC1 M1 r 0 I P 1 6 CI r a 80 05 80 i 00 179 95 79 90 78 i B5 78 ! j BO 77 I 75 77 70 76 65 76 75 1 ---- ----- --- ---- ----- - - -- 17551 75 I I 50 74 ----- --- -- ----- ---- 45 7 40 73 35 730 Exi sti ng Cr s -s c io 30 72 25 72 j 20 715! 715 7101 ! j 710 70 ! 05 70 i ! 00 69 I I j I I 95 1 69 I 90 p p "n S N N O O O S O O N N N S S V r m in m m c t` m0 W lA S O O N ro g in in O O O N in O in in O if7 O O m C14 M Fn I I I I } } }} } } co 0 }} }} } }} ?i g r m m m n n O O O O O D O O O O O O O O 0 O O O O O 0 O O O O O O O + + + + + + + + + + + + + + + + + + + N N N N N N N N N Supplemental Survey Sheet 21 of 31 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 2) 1084 (410) 692-2164 u wN too 0?- Su& (M M r 0) Jco 0 co UN ?aaz cl) 0 Y N ? Cf '° r 0 W X N a1 ? 04 co ma U 0 0 G. z 0 ? o C? M? ?zm m 41 0 ?w.. d ^rd ..ydya 'd ?' m m C w ® d i ° a p Q ?M o btlp ? U d U u 1z m 1FC1 1 1 1 1 1 p D L] 0 82 25 82 20 815 815 810 1 1 810 80 05 80C 1 00 79 95 79 90 78! 85 78 80 77 75 77 al In ra l W t r u fa e 70 76 -- __ 65 76 60 - 751 7 - - -- 50 74 _ ---- - 45 74 40 73 35 73 ro 55 - 5 Ct on # I F) E is Ing C os - e io 30 72 j Th oFA eg 0. + 25 72 20 715 715 710 71 D 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 2+50 2+60 2+70 2+80 Survey Sheet 36 of 65 or CLEAR CREEKS CONSULTING 1311 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 -349 UDR wO`?. ?L C?-' Lob M m?o'$ 0 0) N 7 a •a z d Y N ? 01 f0`?wo W xN: D1 0 C" U) m a: N is 41 0 0 P-4 z b i 0 ° ,,..4 a 4j a Z:9 .? 0s.6 w m? Q'r z ,y A ?Ifa ,d 1V C wo 0 ®qC btl Fr Y U v 5 11 9 m 0 1 1 1 1 1 D r r r r 80 ( 05 80 I I 00 79 i 95 79 I I 1 90 7s ' 85 78d I ! 80 77 I I 75 77 770 76E - - 65 76 60 75 ---- ---- ---- I ---- ----- - ! [755 - -- -- - 75C q 50 74 1 j -- _ -- j 45 174 I I 40 E ls ln C o s- e ti n j 73 35 73 30 72 25 172 20 .715 715 7101 710 70 i ( 05 170 I I . I I 00 I 6g I I : I ? I ? ? I ? I 95 69 90 o po oo p f1 o p N O O O N N ?7 N •1' f N N m Z N to m D N N D O N N M} M w Ifl N °0) in N N m CI N N g O N N A in ? w If1 N m N N N N N N N N N N N N Supplemental Survey Sheet 22 of 31 ACLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 *-4L7 4 x wog'" (0 2 o ? -N A. o& c 01 C'D J J ab N o. 7cV N aZ W x N G14) 04 N m a ?s s cu L>r 0 e? i 0 MU 0 rn a0 t? w? c `ti??d ca cd gz g; 0, b a? a s ME ? U 9 U cn r - I 1 1 b 1 It 0 815 815 810 810 BO 05 BD 79 95 79 90 78 Bri g @ V r ra e St e t 85 76 80 77 S f a er r c 775, 77 70 76 - - -- --^ ---t --- 65 - ---- - 76C -- ---- ----- -- ----- ---- 60 75 55 75 .., ----- ----- - 50 74 -- --- - -- - 45 74 40 73 - 35 73 30 72 25 72 20 715 ro s s cti n #1 7 1 0 a gr v S tre et Br dg 715 71a w g 1 r% m^ r% 710 70 t DU. Z7 05 70 00 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 O+BO 0+90 1+00 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 2+50 2+60 2+-, 2+BO Survey Sheet 37 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarretm ille, Maryland 21064 (410) 692.2164 y,? d RV lY( fX W c03 0? -I ?0) c °' 00 .?N1'- m 04 0) ?aa zrrL mYNm4' loco ea 3 M W m v O?Q! N+r N ma F 0 0 p; z 0 ° 0 OM fr w ,? d; Oq c 4'k°' 'N m p+?N b Uglk bp ? r ti Ud A N cz 0Z 9 1 I 0 IP 1 i 0 11 0 77 75 77 70 76 65 75C Appr x1mat Wa er S rfac e 60 --- --- --- - 5 75 - - --- \ - --- --- --- --- --- --- -- 55 75 --- ? 50 74 Exl ting ross secti n 45 74 40 73 35 73 30 72 Trib Cros utary s-sec Thal tion eg S Tl-l a. 8 +67 25 72J i 20 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 Survey Sheet 57 of 65 IrA6LCLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 G SUR??? (..,4 ? Soe> m? J mM?? t co ?N 3a-aZ 4) 0) Ir W x N « d l0 Cf w N N ma 4j v 0 p; z C) ?, °o 0 m a m ti o m y'? m F+ m z a4 M. ;4 EF y R1 Pr® a Ap?? b E+Gq P 0 v m I M CL) PC a? 9 U d D0201FCI 0 C 1 1 1 0 R D a • 78 80 77 75 I 77 I ! ! 70 76 65 ppro iMat Wat er Su face 7s ? so --- --- --- --- --- -- --- -- - --- ----- f---- 75 \ ?55 75 ?. I 50 74 45 ! Exis ing C oss- ecti n 740 40 73$ ! j 35! 1 I Cros -se tion 1-2 173 30 ose Line to. +57. 72 25 1 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+50 0+70 0+80 0+90 1+00 1+10 1+20 1+30 Survey Sheet 58 of 65 IrA61,CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsri{le, Maryland 21084 (410) 692-2164 ,'uR`? R?ew WAS ?-5 4-? a? M co o co ?N ?aa-E L) Z ? Y N R 111 ca 0 WxN:: c\1 N m a: f e 41 U U zm 0 + p W 4 m C! U ? m ? FUi?E+ ?z A cn c Cb cm ?? Q,I* a ?E+? .mss D U ° r u .? 1 A ? U Ir U d °4 m In 1 0 1 1 P C 10 f 0 a 0 0 G1 M J N 00 (Q N co Oaaz N ?y d _Le 0110"x° cc 9Mm, W x N J I V80 W ? 04 N m a 1? V 47 Fr U a z q e o sx M Ri o z I '4 E" 0 ti C aW b o m R1 E00 ? '? Supplemental Survey U? a Sheet 23 of 31 ® e a4 ? 0 9 0 t~ CLEAR CREEKS CONSULTING LL 1317 Knopp Road, Jarrettsvdie, Maryland 21084 (410) 692.2164 w 6(4P cn REVISIONS a0201FC1 Pi i a? 78 I 85 7a I ? 77 75 77 70! 76 65 I 7s \? - ? so --- --- -- 75 --- --- --- --- - 55 75 ---?' Exls ing C oss- ectio 50 74 I 45 i 74 I ? 40 73 ? I 35 73 I 30 0 o w g w o w o o ? ? g '? $ w o w o n o w g w o 0 0 n O O M7 N ID t0 P N 0 C O N N N N ra a? + j + + 0 o d d o o ? o d o 0 0 0 o d o 0 0 0 o d o o + + 1 1 1 1 1 t D 0 6 78 80 I I 77 75 77 I 70 Existi g Cr ss-s ction ;? j 76 65 76 --- --- --- -? 60 75 --- --- -- --- - 55 75 -- 50 74 45 74 ?40 73 35 73 Cros -se tion 2-1 30 B ase ine to.1 +41. 72J 25 0-30 0-20 0-10 O+DO 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 Survey Sheet 59 of 65 or CLEAR CREEKS CONSULTING 1317 Knapp Road, Jarrettsville, Maryland 21084 (410) 692-2164 L ? Co-1 41 ?-0E) ? M •? J N W co ?N 0n.aZ d Y N m W x tV :) D1 N y N ma •n pr x 0 ° 4 0 m ?r Awl E- 10 ? x o d m ca , w a G a Q 0 wW 0 UM 0 D W U ? 'A au b a? 9 U d 0 cd In oozoini I 1 i 1 p 0 i 78 80 77 I 775 77 70 76 xisti g Cro ss-se ction 1765 760 75 55 i 75 ? i 50 74 45 74 40 73 35 73 CroS -se tlon 2-2 30 72 B ase ine S ta. 14 +34. 0 25 0-30 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 Survey Sheet 60 of 6 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 I -6493 e- 0 SUR? AXWAL (?) off' kut cm M E- g co a1 J N ? Z J cN 3 a •Q z m Y N cc a1?r0 W 4) ? ? N N ma +1 0 a x a o 0 a ,, 0 ? m cti ?r 0 a ?Z:0.5 a4 urn ti qwd m s U ® m ? b c g Fr U ? a? r, 00201M 0 1 1 1 1 1 1 1 0 0 78 80 77 775 i 77 i 1 0 76 E xistin Cro ss-se ction 755 76 l 60 --- - - I 75 -- ----- --- --- --- ----i ---- --- --- J-- --- --- ---- 55 75 50 74 i i 45 740 16" ewer Pipe 40 735 1 351 i 73 ? Cra$ -5e ti0n 3-1 30 72 E ase L ine S ta. 11 3+14. B 25 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+9D 1+00 1+10 1+20 Survey Sheet 61 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 Ytrq 1 5UR`' ' ? W???`cl CCC 65 &I kub 0) M r 0) It (D - fl- J N ? U) N a Q Z N ?N 0 Y ? W x N « ? 4) CN N m a is t 0 p; z q ° 0 ° ? a ti 0 m 0 ?r ?E+m 41 mzo d ca t~ m m qs b W m 1 'C U ® m w ? a ? b CD g U m m D0201FCI 1 I 1 1 p D • 78 it 80 77 I 75 77 I 70 76 Existi g Cr ss-s ctior{ 65 76 60 75 -- --- --- --- -' --- --- -- i 55 75 - 50 74 45 74 i 1 'Se erPi e 40 73 i 35 73 Cros -se tion 3-2 I ? I 3D 172 ? ase L ine E ta. 11 3+10. 6 25 0-20 0-10 O+DO 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 Survey Sheet 62 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 V V. 9G UR? ' ? w4- -l.o oQ? _( pg ? M J ?N 7 D aZ O Y N ? a,1m`c0 to 3 Cl N +m•' N ma is t +1 V .r, 0 ti x P. 00 0 z 41 y ti 0 m cti 0 ? r m ocmo ?E- C? ?z o4 Wa a ?i?V m b m U ® m w ? b 0 g U?+ m F a) rl G? lyci - 0 I 1 1 I 1 D b a 0 • 77 75 77J i 70 76 65 76 I 60 75 I I I --- --- - --- - ?? o?, ---- ---- i 55 75 50 74 Exi ting Cros sect ion I 45 74 40 73 35 73 T b Cros - s-sec - tion 4-1 30' I 72 I i B Trut T ase ? FTrurv ine S req? a. 2 -a. E) +58. 71.5 7 5 1 72 20 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 Survey Sheet 64 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 R wNO -I I c>-Lob m? Z J ?N z 3 a NQ ? Y 0 W xN« 0 ? r m?NfA CO n: I V 0 p; z 0 ? r .? a o t~ 0 ? m 0 Q'r retw + ?Z04 ? AC? M : V Q+i0 qtl~W b I? ^' o r m r I ?i m tlp ? U U d 1 0 I 1 1 I 1 p 1 0 i 77 70 76 65 76 Exi sting Cros secti n 60 75? I ? ? - - - - - - - - - - - - - - -- ed --- --- --- 75 \ 50 174? 45 74 40 73 it 35 73 I i 30 72 I I i 25 72 Cross -sec tion 4-2 20 715 E ase L ine S ta. 2 1+18. 715 -0+10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 1+30 Survey Sheet 65 of 6 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 ? "'? 5jo l Ll- 93? 0 a S11 R4 ( R WPL 7 2 01?! SAa I M _ ?t IO J ?N 7 a cV N QZ co .6 'i coo N N V- co cm w maNN it 4.0 V a x 0 o a 0 CO ti 0 M C7 ? r`m ?r3 E--? m b 4 ?? ? o a U r v ® m ? m° ?o b r; 9 U o N cd En 00201FCI 0 1111111 0 0 a a} M c t0 ce) j N N N 0) ? B1 L J U L. 3 0- c n 810 V) ` co Y B10 (D m , 80 l6 " 0 M 05 M Ill x N BD DD D1?N"0 79 95 m a 79 90 78 B5 78 BO i i tl 77 x s n ro s se n 75 77 70 76.r 1 65 75 --- --- --- - 60 ----- ----- --- 75 55 i,,, U 75 50 c , 0 74 45 a z 74 4D b ' 73 1 ew er Pip e 35 C rx 44 73 30 72 25 72 20 71 r ss S ct on W 715 r 710 OS In to 1 + 41 . R+ 710 ? 70 05 c z0 70 00 -0 m 0-40 0-30 0-20 0-10 0+00 0+1D 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20 1+3D 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 X01 a? Survey Sheet 44 of 65 qU m e !p V L-34 q? I ?? UR, D ? CD q r G I 1` CLEAR CREEKS CONSULTING RWA? U r 1317 Knopp Road, Jarretuville, Maryland 21084 (410) 692-2164 QNS TULE ONO" mmam 0 PM 02DI h1? 1 1 1 1 11 0 0 BO 05 BO 300 79 95 79 9Q 7B 85 78 BO 77 75 77 70 76 65 76 --- 60 --- --- --- - - - 75 55 75 --- 50 74E or 45 74 8' S we I 40 73 E is in ro s se ti n 35 73d 1 30 72 25 72 20 715 715 710 710 70 ro s s cti n W 2 1 05 70 E asili a in to 1" +" 55. p 00 69 95 69 90 0-20 0-10 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 O+BO 0+90 1+00 1+10 1+20 1+30 1+40 1+50 1+60 1+70 1+80 1+90 2+00 2+10 2+20 2+30 2+40 2+50 2+60 Survey Sheet 45 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrentsville, Maryland 21084 (410) 692-2164 493 ZI -TA- 00, A-u& at ?01 J co co ?N ?c a z N ?N 0 Y W x C%j mom Of0!NN ma 1 r l? 0 a z o 0 a m c7 0 z:0 m qU ? m •? o U ® r CD a? 9 k 0 rl 002DIFC1 0 1 D 1 p b p L] • • C 850 --- --- --- -------- -- --- --- -------- --- -- -- --- -------- -- --- -- 84 40 83 30 82C 1 20 810 810 80 00 79 90 78 ?? 80 77C F- 70 76 .. .. .. ... ... . 60 75 74 40 73 30 72 x s i C s - c i n w e 20 710 - - - ? 710 70 00 69 0 - C I n 1 V 13 90 68 80 67 70 N $ ° ° 8 ° ° R S $ ° g ° ° m P g ° ° $ ° g ° ° g ° ° CIF A tt N}} }} } }} m+ P O}}' N n r0 f. Oi N 0? }} N}} m} r 0 O O O ° O O O ° O d O O O + + + + + + + f + + N N N N N N N N N N M? h M N M M M MI Survey Sheet 46 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 J-'1-3493 0 05 QfX W, -q e> 0?-' ?ve> Cf on) Z ON 3 a p,NZ OYt?o O1m`?0 W X N Ola'NY N m a 0 a x a 0 ° o m a? a r -43 Z04 cd qU C d r U ® m b ? a U 0 c6 In 1 1 1 1 I p 0 0 0 a 850 --- --- --- -------- --- --- --- -------- --- --- --- --- T -------- --- --- --- -------- --- --- --- -------- --- --- --- -------- --- --- -- --- --- -- --- --- --- -------- --- --- - -------- --- -- --- -------- --- --- --- -------- --- --- --- -------- 84 40 B3 30 82 520, 810 810 80 00 79 90 E l t n o s -s ec ti on 78 80 77 70 76 60 -- -- ---1 - 75 5D 74 740 , 73 30 72 20 710 710 7D I 00 cr o ss - c i n 69 90 - sac 1 1 T T BD ? 67 I I I 70 0-40 0-30 0-20 0-10 0+00 0+10 0+20 0+30 D+40 0+50 0+80 0+70 O+50 0+90 1+00 1+10 1+20 1+30 1+40 1+50 1+80 1+70 1+80 1+90 2+DO 2+10 2+20 2+30 2+40 2+50 2+80 2+70 2+80 2+90 3+00 3+10 3+20 3+30 3+40 3+50 3+50 3+70 3+80 JCLEAR CREEKS CONSULTING 1317 Knopp Road, jarrenwdle, Maryland 21084 (410) 692-2164 Survey Sheet 47 of 65 cARc a r - 93 9(2 tl WAl M C ? J ?N 0 a .Q Z ct) 0YW- _ to Cf co `?' ? W x N a; cm w N r ma 41 V 0 p; z q 0 m 0 ° a o 41 m a? a r cn + ev ?Igo? A m ? aU m m m Pa 41 •H m U ® o ra ? btl 0 07 tl Fr U m 1 0 I 1 0 0 D 840 840 83C : B30 82 ago 81 '810 I 80 Boo 79 790 3 ' W to M in 79 7BO 77 770 76 --- --- --- -- --- --- 760 -- ----- ----- ----- -- - 75 _ __ ---- - i - 750 74 i 740 73 xis ing Cro s- ec ion 730 72 1E ' S we Lir e 720 71 710 70 700 69 690 oss se io 68C i n - 6 7. a0 i 67C 670 66 60 o p N R 8 O N ?i g N m $ tp $ O N O O O O O O O oo po O O pp O 8 O O o O O O p O p ? It7 10 f? N O N MI N m n m O g i N m n f0 N + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Q+ O O O O O O O O O O O O - .- .- N N N N N N N N N N on M7 M1 M) M7 M) M M Survey Sheet 48 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 F33 I ? -l-1 o? Lob c? J co UN 3aaz d _YNa _ coo al m ? m w 4) V ?Cr 04 ma 8 V 0 p; z q e o ? 0S m Li Q'i o z ??e+ m j a ao? ,c cdrrF ? P? ®u M PC CD a dti A r, cz V) 602O1FC1 0 I I 0 0 1 D a 850 850 84 40 83 830 82 20 Bt 810 i 80 o0 j 6' 3 Wa er aln 79C le ati n U nkn own 790 78C 1 780 77 770 76 ----- ----- ----- --- - --- - -- -- 760 --- ----- ----- ----- ----- ----- ----- 750 750 74 i 740 73 Exl tin Cr ss se do 730 18' Se% er ine 72 720' 71 710 70 700 fis B ose Lin S a 16+ 17 . 690 168 680 ! 1 67g 1;70 N ° 8 ° N g $ °m °n ° ° g ° ° $ ° 8 m P Ol N m P O N M 7 7 m n O 0 o o a o 0 0 + 0 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 0 N N N N N N N N N N in ?n r7 pq M7 R7 M r 1n Survey Sheet 49 of 65 or CLEAR CREEKS CONSULTING 1317 Knopp Road, )arrettsville, Maryland 21084 (410) 692-2164 1b 0?? Lo?? Oa @ d JNro J ?N ?aQz 4) Y N m 0)9- 0 R 2 W x C'4 cm W cli . N ma Ell V p; z q ao x mum cum ?a?m? R1 w c a q UO V10 ? F LL U1 y q ?h9 P. Fa ?i I p ? r ti U c W rl cd m 1FC1 1 1 I 0 0 p 6 a 0 6 840 840 83 IIB30 82 20 810 810 80 1300 79 i 790 78q I T-- i 780 77 770 76 --- --- --- --- --- +--- --- --- --- --- --- --- --- --- --- --- 760 75d ---- ----- 750 74 740 73 " 730 72 12 Se er Lin E x1s 1 Ing ? L.1-0 55- 71E'L-A ion 720 710 1710 70 700 69d r r - 7 690 68 R ise Lin S a. 17+ 05 80 s7 670 ss 60 O O g O ° C! 3 g ° ° g ° g O O O O O O O O O O O O O O O O O O O O O O O O g O O N N rq t0 n 0? N P7 rt7 rD f? 10 Oi O N n t0 t0 P m cm C N n q w n o O b + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + $ O O O O O O O O O O O ?- .- .- ; .- - N N N N N N N N N N M7 N7 pn M7 M pn in pn n Ir7 Survey Sheet 50 of 65 jCLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 CAR pf. 3- ' -1c-\ a?- ? M J Ol OaaZ GlY_cM a1?*'00 t0 ? ? W 4)?ca N N m a N U U 0 pF-4 z q b 0 a° 0 m GJ U R'+ o z '?wmv as q?"m b LV a ) a .? ®? M A U au 0R IFCI 0 D 1 1 0 p a r C • 840 840 83 S30 82 ?B20 81 '810 80C : 800 7s xis ing Cr oss- sec tion 790 78 780 77 770 76 --- --- --- --- --- --- ---- ----- --- ---- ---- ---- ---- ---- ----- ----- ----- ---- - - - --- --- _ --- 760 75 - - -- 750 74 740 73 730 72 1720 71 710 70 700 69 690 68 B se Lin S a. 18+ 05. 2 580 67 570 66 660 N OII S O N} R} g rt}f s0 ?}} m{{ OO+ S O N A Y in 0 C2 to r. w W O N R YI O D O O}} N M}}1 1?}} m}} ?}} m Q}} S O O O O O C O O O O 0 O + + + + + + + + + + N N N N N N N N N N M Iy h M) M M1 N1 M M+1 MI w jCLEAR CREEKS CONSULTING 1317 Knopp Road, JarrerrsvAle, Maryland 21084 (410) 692.2164 Survey Sheet 51 of 65 04 4 b0 0k- Om gm) .S Q) co J N .0 Zco ?N 7 4 cz N a 47 Y CO co o 01 R '? ?O LU x N « N V N m a F4 U a z q 0 Qi 0 W; N gK 6Rco 41 q pr?ap? A q??p b cd e. U? a v, I a ?I Ca M a? 9 a? U c cu LIU m 00201M ??? r• ? ?? 1 I I I w ?. r 1 1 I 1 I 0 p e 0 • 650 --- --- --- -------- --- --- --- -------- --- --- --- - - 850 -- -- --- T --- T -------- --- T --- T --- T -------- -- -- --- T -------- --- T --- T --- T --- T -------- --- T --- T --- T -------- --- T --- T -- 84 40 B3 30 82 20 810 810 BO 00 79 - 90 78 BO 77 70 760 1 .. ... . -- - . - 75 - 50 74 40 73 30 72 20 710 710 70 00 6s o - c Tc- 590 _ -B as a -i m e q * tr - 1A 9 8- 2 58 BO - - 67 1 7 7 7 1 1 70 o g 0 0 R g$ 0 0$ o g o 0 o g o o$ o g o 0 o g o 0 0 0 o g o 0 9 g 0 0 0 c? 0 g o a } } m n w}} N ro m n w a n m m n m w } N m m n w } } 0 O O O 6 6 0 O 0 O 6 + + + + + + + + + + N N N N N N N N N N ?1 A M N N M+f vj M N , t + Survey Sheet 52 of 65 or CLEAR CREEKS CONSULTING 1317 Knapp Road, Jarrettsville, Maryland 21084 (410) 692-2164 '?.:S-CZ7 3 WAS a>t ? d ? 65 (n N N J m 0- Z m Y N R cm f0 W xN0 Q1 (D CN N ma ! r V U 0 r 0 a 41 iii 0 07 r ?) M ?- x A4 g 0 as ?-461j c 0.4 og0 a Qom b cd a ? r U ® r 0 b C g Fr h U In cc 07 00201rc1 r 0 1 1 i 1 0 • 0 ;s4l, j ARM AWL" kb- -CLEAR CREEKS CONSULTING 1317 hnopp Road, jarrettsa7lle, Maryland 21084 (410) 692-2164 CROSS VANE l ? o A I m H REVISIONS A ROMEO ilu 00201FC1 '? ?NR+4wxJ 54uq (nom SECTION Im co r0) N N? az? co -6 Lon, `? 0 M m0-W? yu 0 M r > ?s s a z d x, Erah ?.Q: -?A.m ? +u?6 wtr?L N? Cb qp c9 ? PROFILE t i 1 I 1 b 1 r 0 a 6 ROCK VANES .D f 1 J i ? PLAIN , PROFILE SEC'TION CLEAR CREEKS CONSULTING OFN 1317 Knopf Road, Jarrettsville, Maryland 21084 (410) 692-2164 ?M N N 0) 'CQZ r Y_ en M " M ?0 3 M X CN m? ?9 GC N N ?a fs s P=4 z r ,1 1? ®g 45 v c7 a4 aPC Fo ?F ?0 C P I r 'o r? 1 I I 1 1 Ll LJ 6 0 PLAN T.Vly1b0•}i rn 'Li - •V ROCK SILL PLAN K,.c..p BF Row v;..;se ?u •'C/\ U „ l\ Fi?198O9W6•Q X000 O ,- G D o D V \ J F`teq itliiC. J - ? ?V o.\ ???U ` 67JC?•fJM- PROFILE STEP POOL rT CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarretts ville, i4far,land 2:084 (410) 692.2164 RFtI_ --------------- -- 4:f 2o:i c ,o o (n, V e• PROFILE 9 Q SECTION ? M J y N N? N 0? L J ?a z? °cl) M ILJ ??ror Cl 0 N ? a ?s s 8 v 0 ? z m 0 ° rn m U Q) iCTv ?z ??u. 4 0 wT7 y ?, Qa cd L? A ? qF ° P.4 P w ®o A Al ? b &a C) v 2 a4 0? so3 ? 00201FCI 1 1 a- / co co N n ?_ - @1 N o' ce) re ce) Ill?? - c - - --------' 0S VIII I??I ? f` - c r/ \ ,+ r / ? / ?: ? ? .??Y ?? ??'? ?-y/?/?'?" %? .• WRL ?e ^? / d I c ti ?i - 94 a. q[? f vJ - i ` s\ rte) ?' _ j, r 04 17 _IV ?j l 1=4 W Lz! _ fit a L CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsvllle, Maryland 21084 (410) 692-2164 00201pc1 1 ?j P, al aj ?? J N co Upland Forest _ V- ?? s? ,L? 4 t0 and Forest ------------ X -??? BOO p Eland Floodplai?:?! eElands - r as 3 z?; ' r _ J _ a? `r\ _ia^ \ z Y ' r I'TS ? E A- r r i J ? ? t r g- g /y %1Tt"rran Buffer \ a k s K9 C , - z--- 4?_, G _ ' ?; ,i eglau lerQuah4g dll ' l ? ?iy k?e iterbualiti Pond , 1r Major Planting Zones r? _ BLEAR CREEKS CONSULTING ib8 iii®ss 1317 KnoDp Road, larretts-ille; Marvland 2' 084 (4!0) 60/2-2164 i 0 1 1 Plant Schedule for Stream Banks, Riparian Buffer, and Upland Forest Zone 1 • Stream Banks in Crossover Reaches and Upper Point Bars Qt Botanical Name Common Name Size Comments 100 Amelanchier conadensis Serviceberry 18-24 in. Bareroot/Container 100 Hamamelis virginiana Common Witch Hazel 18-24 in. Bareroot/Container 100 Corpus amomum Silky Dogwood 18-24 in Bareroot/Container 100 Viburnum prunifolium Blockhaw 18-24 in. Bareroot/Container 100 Cercis conadensis Redbud 18-24 in. Bareroot/Container Zone 2 ® Stream Banks in Meander Bends Qty Botanical Name Common Name Size Comments 50 Platanus occidentalis American Sycamore 3-4 ff Bareroot/Container 5C Fraxinus pennsylvannica Green Ash 3-4 ft Bareroot/Container 50 Betula nigra River Birch 3-4 ft Bareroot/Container 60 Corpus amomum Silky Dogwood 18-24 in Bareroot/Container 60 Amelanchier alnifolie Serviceberry 18-24 in Bareroot/Container 60 Sambucus conadensis American Elderberry 18-24 in Bareroot/Container Zone 3 - Riparian Buffer and Upland Forest 40 Acer rubrum Red Maple 3-4 fl Bareroot/Container 40 Prunus serotina Black Cherry 3-4 ft Bareroot/Contciner 40 Nyssa sylvafaC Black Gum 3-4 f- Bareroot/Container 40 Fraxinus pennsylvanica Green Ash 3-4 fr Bareroot/Container 20 Fogus grandiflora American Beech 3-4 f` Bareroot/Container 20 Gleditsia tricanthos Honey Locust 3-4 ft Bareroot/Container 10 Juglcns nigra Black Walnut 3-4 f! BarerooflContainer 80 Hamamelis virginiana Common Witchhaze! 18-24 in Bareroot/Conto iner 8o Linden benzoin Spicebush '8-24 in Bareroot/Container 80 Cornus stolinifera Red Osier Dogwood 18-24 in. Bareroot/Container ?5 !?- S V) 0 UD ?N :5 a (j) Z a ?N " 0 LU N N et c4 ? 51 N L) Planting Zones ? C9 9Z 05 m U ?4 ? Pa ? C7 W? A o 'd ?E U1 L) M I m d R Fa A ? eD Groundcover Seeding and mulching of all disturbed areas will be completed in accordance with the details outlined in the Constructicr Specifications document. The seed mixtu•es. application rates, etc. are described in the Seeding ord Mulching sectiar of the Constriction Speclfcatiors dccumeot. Stream Bank Stabilization in addition to contoinerized trees and shrubs: stream barks in meander bends will be stabilized with !ive stakes installed along the banks from toe of the slope to banktull elevation. Live material that will be utilized in preparing the live stakes is described in the Live Stakes section of the Construction Specifications document. i CLEAR CREEK? CONSULTING 1311; Knopp Road, jarre'UsVille, I'vian-la;:d?1084 (410; 692-2164 00201FCI 1 1 p b 6 D • a 0 Plant Schedule for Floodplain Wetlands Zone 1 - Shallow Marsh Emeraenf Qty Botanical Name Common Name 50 Peltandra virginica Arrow Arum 50 Scirpus americanus American Three-Square 50 Soururus cernuus Lizard's Tail 50 Pontedena cordata Pickerelweed Zone 2 - Shallow Marsh Fri nge Qty Botanical Name Common Name Perimeter Emergent 50 Juncus effuses Soft R,-,,sh 50 Acorus calamus Sweet Flag 50 Carex intumescens Sedge 50 Iris virginica Blue Flag Iris Shrub 25 Cepholonthus occidentalis buttonbush 25 Alnus serrulata Common Alder Zone 3 - Forested Wetlands Trees 20 Platanus occidentalis American Sycamore 20 Frcxim s pennsylvannica Green Ash 30 Betula nigra River Birch 20 Acer rubrum Red Maple 2C Salix nigra Black Willow 30 Nyssa sylvatica Black Gum 2C OuercuspheEos Willow 0ak 20 Luquidamberstyrociflua Sweetgum Size Comments Container Container Container Container Size Comments Containe, Container Container Container i8-24 in 15-24 in 3-4 ft 3-4 f- 3-4 ft 3-4 `t 3-4 ft 3-4 ft 3-4 f' 3-4 f- Bcreroot/Container Bareroct/Container Bareroot/Container Bareroot/Container Bareroot/Container Bareroct/Container Bareroot/Container Bareroot/Container Bareroot/Container Bareroot/Container 3 I21 L I ? 1 :5 Planting Zones CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarretrsvilie, Mar?-land 21084 (4 10) 6921164 2.i L 121 3 bZ o? iob co U) ?8 t1- N a) U) a QZr N-0 rn C M ?3 f0 o a M Nco ? a i U 4 ? m ?o ?Z ?4 C7 ?® b 0 E+ Ee ? ? Ga ?p ®R q ? y 1FC1 r r b 0 0 • Plant Schedule for Storm Water Wetland/Water Quality Ponds Zone 1 - Shallow Marsh Emergent Qty Botanical Name Common Name Size Comments 25 Peltandra virginica Arrow Arum Container 25 Scirpus americanus American Three-Square Container 25 Saururus cernuus Lizard's Tail Container 25 Pontederia cordato Pickerelweed Container Zone 2 - Shallow Marsh Fringe (qty Botanical Name Common Name Size Comments Perimeter Emergent 25 Juncus effuses Soft Rush Container 25 Acoruscalamus Sweet =lag Container 25 Carex intumescens Sedge Container 25 iris virginica Blue Flog Iris Container Shrubs 20 Cepholanthus occident alis Buttonbush 18-24 in Bareroot/Container, 20 Alnus serrulata Common Alder 18-24 in Bareroot/Container Zone 3 - Islands and Rip arian Fringe Trees 10 Acer rubrum Red ?Mople 3-4 ft Bareroot/Container 10 Salix nigra Black Willow 3-4 ft Bareroot/Container 10 Nyssa sy'vaticc Black Gum 3-4 ft Bareroot/Container '0 Quercas p^ellos Willow Oak 3-4 ft Bcrerco'/Coctainer -5 1Z I i CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrensville, .1,vfanlard --•:084 ;410;' 692-2164 12- 2 Planting Zones i- 21 3 o? 0 , a :5 a- aZ? L '^ V' LO BM ?ID CO CO ?LU >, ° C N N ? a PI I I i &a l L> 0 ?g9? ? A, a b 0E C ? a ?? m 0 200 01FCi 0 / ?.. s Y 5 i 0) Cc) //" a H ?a LOD ® M r F ! N ?Nrn r` Tributary Pump Diversion a 10 Z N v 17 0P Construction ACCeSS I M M i ? J A `P Staging/Stockpile Area 1!J x N Construction r Tree Save Area ' :: '• / if;' i r` ./ : d•! if r° c Q o y ?r ,?b e 41 Stagmg/StockpileArea '? 4 t?; ?r LOD" 17-7.1 - L 10 s ??ppp ?x-_ ' a I it •. ,, i / M - ?', y L r '+<s_.. .. - , j •+^`' `r, t e / `i. \ a : n NM G9 a,° TOTS' a@ ° a f fir; h'°? -C R ( I ? ?. ??G? 71 ,1 1?.4m-1 ! 1? \ T . ?Sj y _ u? +f 'tia i ! $ ti ! •tl • S ?"iL! a 'r.? S • 7X r-' ?- -_ / r I I 3 t Fens ?... M -??-- / =?°r •- 1, \ \ eo: T?`1 I ?.? ? ? e is m J Sand Bag/Stone Dike Stage ID - Mainstem Pomp Diversion X ?// D(? M ' Tom= 4- • ?? a 1: ??y _ _ ^, - - x - - 6d ?? - - q _M' A % may; LO ` Stage I - Mainstem Pump Diversion Staging Are _ ! \yf -??J a y -156 j Stage H - Mainstem Pump Diversion a a Staging Saed Bag/Stone Dike ? oa --_' a? 3 Area ?-,S nyi a a?V? `L a CmlStrnCtlU? ACCeSS R. 7 °at _o?t? r Q -j q p rsan Buadmg a - a - Antlerson Bldg Access Road tc `T Access Rdad to . '--Tributary Pump Diversion l f! b • is CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 g. 00201M 1 $ cis Ce (0 Sand Bag/Stone Dike y, N 1 v N _j q L) . /, q 0 1 d•cZr F / I M z ,II * i I i ? Y (6 I {L --' - - Tributary Pump Diversion \N - -_ ? I c II I ? 9 1 ? M0 v s WOD 1 10 ! u ld I -'' ` i Construction Access Y f r { LSD ? --- 4. .' RDZ , Q I I , \ 0 ' g Construction Access j I • y, // °? i 1 ? ?._ ,? -- ?' hr T g SE 1j I _ / T?- i i I ca \ m ^N F />` y Staging/StockpileArea y;r ^L ` 1 5: m ? Q /p"? kl f ; I?? VI Tree Save Area ® a LOD i ma ' ' 1 i ? II /: ... _ - - A I ? ? °r I J D ?'?[ _.. ?y?s! ' as•' -??, .5? 1 ,? s®N ? ? SSS u ? ? ? V Construction ACCESS y I c /' e e '- s ^$ m y ?? r / I II. c i c U155 ioc ?z4\--j '? \ / _ ?! n, Lay s Y f ' ; y Fence c? ®*g a S' W L r ,SiffRea l G i° ay ^ ,sue m ce s,???i rv! d 'M Pq C9 w r 6 / Sand Bag/Stone Dike 1 j/! qqy ??` Y?I CJ I.? E acv N 0 It /' ua B e am° m VO y- - a? l1? Sta Sing Area »x ?=... - ? flt Pump Diversion , u l Tributary r, C I j;E 4. Stage II - Mainstem Pump Diversion /? i .. CLEAR t.-,REEKS CONSULTING 1 I a" yu C I. UL 1 S 1 1 1 D I _'_?' ? 'ss ; d I.. c 1 a? ? II a ence s.i,, L a j 2 C. ' LOD- S x U ? ? ?` ,55 v 3 e Gt i. Stage 2a - ° Tributary Pump Diversion 1N ?-?J 0 Temporary Sediment Basin 4_ ? I " ¢ d G i IF ?: 2 11 : . o--ce.. Stage 2b Tributary Pump Diversion Stage IV _ Mainstem Pa \ \\? , \ ? ? mp Diversion, l 9 r? \ lS 't ? ? - ;Sand Bag/Stone Dike -.? "sue - it=T - z? S I .? aN L LOD- - t'. and Bag/Stone -4Tree Save Area y Q ? ?'Stage II - Mamstem Pump Diversion Construction Access ILI C -?___- CLEAR CREEKS CONSULTING 1317 Knopp Road, jarrettsville, Maryland 21084 (410) 692-2164 gV Tributary Pump Diversion LOD ?lSB- i cE t?? ,e A t a tl ?? EI ? ' I I i Tree Save Area d 9 .. ? O1 111 < t ?? n5 - I i jY cY__,ss?' 1 s.. { E C tl ?- ?i r n '] l? I S?Imf iI I??-,55 c o ?? 1 t`?,S Y a v . .. s - . f .. -53 A 3 Silt Felice '- ?, -•. ?•,€SiltFell ce -^\ vcl? Tributary Pump Diversion 1 E . -? $I\ Sand Bag/Stone Dikes 0) M >b J N00h Z co " ? d ?E' 0 z h si ?p Y CO 'Coo } d 04 r: I I, Qn 4 - .1 Sand Bag/Stone Dike --A i P4 x aNW ®? ? ? U 1 w y I a.s m CD I" M i s ,_,r - o w ?? !, 0.4 d E! _40 _. 4 u `l2 0? S,vB ? 0 LOD b ?? :, I 1 1 1 1 1 0 R r i D SALEM CREEK - CIVITAN PARK STREAM RESTORATION SEQUENCE OF CONSTRUCTION PHASE I (Baseline Stations 9 + 25 - 20 + 18) *THIS PHASE WILL BE DONE IN THREE STAGES Stage 1(Relocated/Restored Tributary Channels and Floodplain Wetland Construction) 1. Phase I includes the area bounded by Stadium Branch, the ball fields, the existing trail, and the Unnamed Tributary adjacent to Vargrave Street. 2. Clear and grub for all Phase I sediment and erosion control devices. 3. Install all Phase I sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, except the sandbag/stone dikes and pumped diversions. Note: This stage of the Phase I construction will be in the dry and will not require pumped diversions. 4. With the exception of the "Tree Save" areas, clear and grub remaining Phase I areas. 5. Remove all concrete, wood, metal and other construction debris from the rubble landfill area, and haul to City approved landfill for disposal. 6. Mass grade the Phase I area, except slopes adjacent to ball fields, in preparation for stream channel and wetland construction. Elevation of mass graded area should be 756 0.5 feet. 7. Grade slopes adjacent to ball fields to final grades shown on construction drawings. Seed and stabilize slopes immediately. 8. Grade proposed wetland areas, including islands, to final grades shown on construction drawings. Wetland area elevations range from 756 to 754 f 0.2 feet. Island area elevations range from 756 to 757 f 0.2 feet. Note: If suitable soil must be added the final grades shown on the construction drawings must still be the same after the layer of soil is added. 9. Starting in the area immediately adjacent to Stadium Branch construct the relocated Stadium Branch stream channel across the floodplain following the thalweg alignment staked in the field. Note: The upstream reaches of the relocated stream channel will meander through the "Tree Save" area. Therefore, every precaution should be taken to avoid damage to the trees including their root systems. 10. Construction of the relocated Stadium Branch stream channel should stop in the area immediately adjacent to the Unnamed Tributary. 11. Seed and stabilize all disturbed areas in Phase I. Stage 2 (Reconstruction of Existing Unnamed Tributary 1. Install Stage 2a sandbag/stone dike at upstream end of Unnamed Tributary as shown in the Sediment and Erosion Control Plans and start pumped diversion operation to dewater work area. 2. Continue construction of the downstream end of the relocated Stadium Branch stream channel, connecting it into the existing Unnamed Tributary channel. 3. Remove the Stage 2a sandbag/stone dike and pumped diversion from upstream end of Unnamed Tributary. ACLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsvilie, Maryland 21084 (410) 692-2164 0) M r 0) Nt CD co .4i I- 00 J ?N ?aaZ ? Y N ? tO r 0 tQ ? ? W XN« 0 W ?W ma 4. Install the Stage 2b sandbag/stone dike at upstream end of the trail crossing of the Unnamed Tributary as shown in the Sediment and Erosion Control Plans and start pumped diversion operation to dewater work area. 5. Reconstruct the downstream reaches of the Unnamed Tributary as shown on the construction drawings. 6. Remove the Stage 2b sandbag/stone dike at upstream end of the trail crossing of the Unnamed Tributary. 7. Seed and stabilize all disturbed areas along the downstream end of the relocated Stadium Branch and the reconstructed Unnamed Tributary. Stage 3 (Reconstruction of Existing Stadium Branch 1. Install sandbag/stone dike at upstream end of Stadium Branch as shown in the Sediment and Erosion Control Plans and start pumped diversion operation to dewater work area. 2. Reconstruct upstream reaches of existing Stadium Branch stream channel as shown on the construction drawings. 3. Continue reconstruction of existing Stadium Branch stream channel, connecting it into the recently completed upstream end of the relocated Stadium Branch stream channel. 4. Remove the sandbag/stone dike and pumped diversion from upstream end of Stadium Branch, allowing baseflow to flow through the reconstructed and relocated Stadium Branch and into the Unnamed Tributary. 5. Backfill the lower reaches of Stadium Branch as shown on the construction drawings. 6. Seed and stabilize all disturbed areas along the reconstructed/relocated Stadium Branch and backfilled areas of the existing Stadium Branch. 7. Note: Several days after the baseflow has been diverted to the reconstructed/relocated reaches of Stadium Branch and the Unnamed Tributary check the area for problems. PHASE H (Baseline Stations 14+40 -18+10) *THIS PHASE WILL BE DONE IN TWO STAGES Stage 1(Storm Water Wetland and Storm Drain Construction) 1. Phase 11 includes the area bounded by Winston-Salem University, Salem Creek, and Parkview Street. 2. Clear and grub for all Phase II sediment and erosion control devices. 3. Install all Phase II sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, except the sandbag/stone dikes and pumped diversions. Note: This stage of the Phase II construction will be in the dry and will not require pumped diversions. 4. With the exception of the "Tree Save" area, clear and grub remaining Phase II areas. 5. Mass grade the Phase Il area, in preparation for storm water wetland and storm drain construction. Elevation of the mass graded storm water wetland area should be 756 f 0.5 feet. 6. Excavate and grade proposed storm water wetland areas, including forebay, shallow marsh, islands, and micropool to final grades (t 0.1 foot) shown on construction drawings. Note: If suitable soil must be added, the final grades shown on the construction drawings must still be the same after the layer of soil is added. 0'J off- A.08 +J U 0 .0 ti a 0 0 :0 r Oh +? r3 m p"z* to ?W ?a ? b 0 a? Q+ ? A ail 4J a CF a? U 0 DO L) r 0 x a, ca A? a C a m P0 9 I 1 1 1 1 1 D D [7 7. Utilizing material excavated from the proposed storm water wetlands area, backfill area over 42-inch sewer interceptor and proposed maintenance access road. The fill area should be brought to an elevation of 757 t 0.5 feet and it should tie into the adjacent slopes. Note: Caution should be taken not to bury existing sanitary sewer manholes. 8. Construct storm water wetland outfall structure and outfall channel as shown on the construction drawings and outlined in the Construction Specifications. 9. Install Park-view Street storm drain system (including manhole, 12 inch and 36 inch storm drain pipes, pipe end sections, and riprap outfall protection) as shown on the construction drawings and outlined in the Construction Specifications. Stage 2 (Gully Restoration) 1. Install sandbag/stone dike at upstream end of gully adjacent to University parking lot as shown in the Sediment and Erosion Control Plans and start pumped diversion operation to dewater work area. 2. Backfill and grade existing gully from the existing 36-inch storm drain outfall to its confluence with Salem Creek. Final elevation of backfill at Salem Creek should be consistent with proposed top of bank (i.e., 756 f 0.2 feet). 3. Construct a stable drainage swale routed along the backfilled gully from the existing 36-inch storm drain outfall into the newly constructed storm water wetlands as shown on the construction drawings. 4. Remove the sandbag/stone dike and pumped diversion from upstream end of drainage swale, allowing baseflow to flow through the storm water wetlands. 5. Seed and stabilize all disturbed areas along the drainage Swale and storm water wetlands. 6. Note: Several days after the baseflow has been diverted to the storm water wetlands check the area for problems and evaluate wetland hydrology. PHASE III (Baseline Stations 1+40 - 23+00) *THIS PHASE WILL BE DONE IN FIVE STAGES Stage I - Mainstem Channel and Floodplain (Thalweg Stations 2+50 to 8+00) 1. Phase III includes the area bounded by Martin Luther King Drive, the field adjacent to Diggs Boulevard, the Phase I area, Winston-Salem State University, and Vargrave Street. 2. Clear and grub for all Phase III, Stage I sediment and erosion control devices. 3. Install all Phase III, Stage I sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, including the sandbag/stone dike and pumped diversion. 4. Starting in the area beneath the Martin Luther King, Jr. Drive Bridge and working downstream along the mainstem (Thalweg Station 2+50 to 3+80): A. Grade both stream banks and floodprone areas as shown in construction drawings. B. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager. C. Construct shot rock base along right side of the channel as shown in the construction drawings and outlined in the Construction Specifications. D. Stabilize gully below 30-inch storm drain outfall along right bank. U&CLEAR CREEKS CONSULTING 1317 Knopp Road, ]arrettsville, Maryland 21084 (410) 692.2164 E. Extend Storm Drain Pipe #1 (6-inch CMP) and stabilize outfall along newly constructed floodprone area on right bank as shown in construction drawings. F. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. 5. Working downstream along the mainstem (Thalweg Station 3+80 to 8+00): A. Excavate new channel including stream banks, and floodprone area along left side of the channel, and point bar, shot rock base, stream banks, and floodprone along right side of the channel as shown in construction drawings. B. Install rock vanes as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager. CM M co .: Gt N (D co 0) N Q .a Z r Y co 0 i 7o S 0 2 W y m ' N m d C. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager. S s D. Reconstruct Storm Drain Pipe #2 (18-inch CMP) and stabilize outfall along newly constructed i floodprone area on right bank as shown in construction drawings. E. Reconstruct Storm Drain Pipe #3 (18-inch RCP) and stabilize outfall along newly constructed floodprone area on right bank as shown in construction drawings. F. Remove the Phase III, Stage 1 sandbag/stone dike and pumped diversion. G. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. Stage 2 - Mainstem Channel Floodplain and Water Quality Pond (Thalweg Stations 8+00 to 16+00) I . Install all Phase III, Stage 2 sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, including the sandbag/stone dike and pumped diversion. 2. Remove and haul the existing pedestrian bridge structure, abutment and any demolition debris to a disposal site designated by the City. 0 3. Working downstream along the mainstem (Thalweg Station 8+00 to 9+80): p; z A. Grade left stream bank and floodprone area as shown in construction drawings. ti B. Construct new bank and floodprone area along right side of the channel by installing shot rock a base and backfilling existing channel as shown in the construction drawings. y C. Install rock vanes as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager. p D. Excavate new thalweg and install rock sills as shown in construction drawings and as directed m es by Project Manager. c a E. Note: Storm Drain Pipe #4 (8-inch Terracotta) will not be retrofitted. However, outfall and x slope should be inspected to determine if stabilization is necessary. F. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. cd 4. Working downstream along the mainstem (Thalweg Station 9+80 to 15+00): 00 A. Excavate new channel along left floodplain area including stream banks and floodprone area o W along left side of the channel, and point bar, stream banks, and floodprone along right side of w the channel as shown in construction drawings. 6°k b B. Install rock vanes as shown in the construction drawings, outlined in the Construction a lo y Specifications, and as directed by Project Manager. Q' *J A A b C. Excavate new thalweg as shown in construction drawings. 019 b D. Backfill existing channel and mass grade to create right floodplain area as shown in the F o construction drawings. Elevation of mass graded right floodplain area should be 756 f 0.5 y w" feet. U o d (? ?7 N V Fr U d 94 0? ?g ? 1 1 R i R 0 a • 0 E. Excavate and grade proposed water quality pond areas, including forebay, shallow marsh, islands, and micropool to final grades (} 0.1 foot) shown on construction drawings. Note: If suitable soil must be added, the final grades shown on the construction drawings must still be the same after the layer of soil is added. F. Utilizing material excavated from the proposed water quality pond areas, backfill and grade slope area adjacent to parking lot creating proposed maintenance access areas. The fill slope should be brought to the elevations f (0.5 feet) shown on the construction drawings and it should tie into the existing slopes. Note: Caution should be taken not to bury existing sanitary sewer manholes. G. Construct water quality pond outfall structure and outfall channel as shown on the construction drawings and outlined in the Construction Specifications. H. Relocate and extend Storm Drain Pipe 95 (18-inch CMP) to outfall into water quality pond as shown on the construction drawings. 1. Relocate and extend Storm Drain Pipe #6 (18-inch RCP) to outfall into water quality pond as shown on the construction drawings. J. Rake all disturbed areas on both sides of channel and floodplain, in and around the water quality pond and adjacent slopes, seed and mulch. Working downstream along the mainstem (Thalweg Station 15+00 to 16+00): A. Grade left stream bank and floodprone area as shown in construction drawings. B. Install rock vanes as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager. C. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager. D. Remove the Phase III, Stage 2 sandbag/stone dike and pumped diversion. E. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. Stage 3 - Mainstem Channel and Floodplain (Thalweg Stations 16+00 to 22+00) 1. Install all Phase III, Stage 3 sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, including the sandbag/stone dike and pumped diversion. 2. Working downstream along the mainstem (Thalweg Station 16+00 to 18+50): A. Grade stream banks and floodprone areas along both sides of the channel as shown in the construction drawings. B. Install shot rock base along both sides of the channel as shown in the construction drawings and outlined in the Construction Specifications. C. Install rock vanes as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager. D. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager.. E. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. 3. Working downstream along the mainstem (Thalweg Station 18+50 to 20+50): A. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager. CLEAR CREEKS CONSULTING W 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 4. Working downstream along the mainstem (Thalweg Station 20+50 to 22+00): A. Grade stream banks and floodprone areas along both sides of the channel as shown in the construction drawings. B. Install cross vane as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager.. C. Install rock vane as shown in the construction drawings and outlined in the Construction Specifications. D. Install shot rock base along both sides of the channel as shown in the construction drawings and tli d i th C ?-AJy(0 CO I' N Cn N 3 a a Z h u 4) Y c c 0) 0 a m r r t0 ? 2 X r W X N co m a ou ne n e onstruction Specifications. E. Excavate new thalweg and install rock sills as shown in construction drawings and as directed by Project Manager. i 5 s F. Remove the Phase III, Stage 3 sandbag/stone dike and pumped diversion. G. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. Stage 4 - Mainstem Channel and Flood lain Thalwe Stations 22+00 to 26+00 1. Install all Phase III, Stage 4 sediment and erosion control devices as shown in the Sediment and Erosion Control Plans, including the sandbag/stone dike and pumped diversion . 2. Working downstream along the mainstem (Thalweg Station 22+00 to 26+00): A. Grade stream banks and floodprone areas along left side of the channel as shown in the F construction drawings. B. Install shot rock base along both sides of the channel as shown in the construction drawings and outlined in the Construction Specifications. r, C. Install rock vanes as shown in the construction drawings, outlined in the Construction Specifications, and as directed by Project Manager.. Ct, Z D. Excavate new thalweg and install rock sills as shown in construction drawings, and as q b ° directed by Project Manager.. C o E. Remove the Phase III, Stage 4 sandbag/stone dike and pumped diversion. +> r z F. Rake all disturbed areas on both sides of channel and floodplain, seed and mulch. 0 Stage 5 - Diggs Boulevard Storm Drain Relocation M ' 1. Install all Phase III, Stage 5 sediment and erosion control devices as shown in the Sediment and Q +or~ z q Erosion Control Plans. Z' 2. Install proposed Diggs Boulevard storm drain system (including manhole 18 inch and 24 inch storm v , drain pipes, pipe end sections, riprap outfall protection, and drainage swale) as shown on the construction drawings and outlined in the Construction Specifications. U] o A 3. Excavate and remove all 18 inch and 24 inch storm drain pipes from the existing storm drain system as w shown on the construction drawings and outlined in the Construction Specifications. L4 o ti b 4. Remove the Phase III, Stage 5 sediment and erosion control devices . a a . 5. Rake all disturbed areas, seed and mulch. P A 9 q b o LV F V i ®? m ? b ti U d d A 1 1 1 1 / r PHASE V (Baseline Stations 1+40 -23+00) *THIS PHASE WILL BE DONE IN TWO STAGES Stage I - Walking Trails I . Repair and relocate the existing walking/bike trail as shown in the construction drawings and outlined in the Construction Specifications. 2. Rake all disturbed areas, seed and mulch. Stage 2 - Pedestrian Bridge Boardwalk and Trail 0) co r 0) 00 2 tN IA a Z m Y N V _ l0 CU +0 N N N ma 1. Install bridge abutment and bridge bearing plate according to manufacturer's design drawings and construction specifications. 2. Following the manufacturer's written instructions, lift and set bridge structure on bearing plate. 3. Weld bridge structure on bearing plate. 3. Inspect bridge and abutments according to manufacturer's written instructions. 4. Install boardwalk and asphalt trail as shown in the construction drawings and outlined in the Construction Specifications. PHASE VI (Baseline Stations 1+40 - 23+00) Bioengineering, Wetland and Riparian Tree and Shrub Planting I. Install all live stakes along the stream banks in meander bends in accordance with the planting plan and Construction Specifications document. 2. Install all containerized trees and shrubs in accordance with the planting plan and Construction Specifications document. 3. Seed and mulch all areas within project limits in accordance with the planting plan and seed mixture, application rates, etc. described in the Construction Specifications document. PHASE VII (March 15 - June 1 2004) (Baseline Stations 13+50 - 23+00) Wetland Emergent Plantings 1. Install all containerized wetland emergent plants in accordance with the planting plan and Construction Specifications document. C,.U&CLEAR CREEKS CONSULTING W 1317 Knopf Road, Jarrettsville, Maryland 21084 (410) 692-2164 v 0 0 ti a 0 +? a +? U M CU:S .r ?z+ ? U Oi V]wM 0 Fr pr b a ?Q U? a ?^,i R W^, W U?+ F 0 00201FCI U b m 0 a CAS] i t7 A b b 0 M FI a b d M 0 1 1 1 1 b a 0 DETAIL 24 - STABILUM CONSTRUCTION ENTRANCE I 3 MGU:TABLs EERM 16' YIN., Iv°?- SG' k!NI1Uk EXIST!NG PAVEME +. G RTEXT!LE CUSS 'C' ?' EAATN PILL O PIPE AS ATCESSA7r OR 9Ei1Efl - MINI MUM 6- OF 2--3' AGGREGATE -EX; Si!NG GROUND OVER LENGTH AND B:DTH OF S RU TURE PROFILE + 50' MIN1111M LENGTH T 10' MIN. EXISTING 10' Ulm, NUM 10' Ulm. PAVEMENT .IDTx STANDARD SyM60L PLAN VIEp IN. Cost-tiPPISpec;fioat7an Il I. Lengtn - mini-P of 50' (+30' foe single resiaerce lot). 2. ridtn - 10' m.r sncV lc as '.ores of the exisring - to prpvida a tIrni roa; us. Timm. ng ! 3. GeOtexii is f-T. it! liar ...n) snap be Elates OVar ttM 0.t ist; nq greets prior to placing store. -The pion ab--l arthaY;ty soy ncr -ire single family residpKBS to Use geotext7l e. 4. Stms --haa aggregate f2• to 3.1 m reclollad a rscyplea -at. _iValent shall be plotea at least 6' deep over the fengtn aria ridttf of tha ent- 5. Slrfoce ratM - al I s-+oce .Oren f'. owing to on';-'so t-. cofstructitn BrsiroieS Snell be piped t--Qn he entome. lmintaining positive d'ciroge. Pipe rmlolle0 --vin 1M xt-; I.- ca4lrtctiot srrh'ope anal I M DroteCeO tint a InDl+tmla Damn ri to 5:1 si( and a mfnimm of 6' of saris war the p'pe. Pipe has 'o as sized -ding to tpla drairgpe. llfft tact Sa is loeatad at a h:gn spot and has rip drEinoga to tmreY o pips rill not be -Y. Pipe should be sired -dI ng to the -t 0f --" to as ecanayad. A 6- mini- rill b, reauirea. 6. Location - A stab; Iiaaa Cans,-tiol erit,_ sMll as Iocotpp at evs-Y Doi nt el,ere Constueticn traffic enters car I?CVes a CaristlJCf Tan sita. Va.,.,- leav;ng the site sat rove] aver the entire length of the stabilized -St-tion entrance. US18A12%6II' 011, 1Q.7[O6 PAIgS YA1mJW fBAffi.T a FYIYrORVtj AR6 (R?4AaIf ?Af t - II - s 14/a fANf?mII A11@@aA9fEi 1990 DETAIL 22 -. SILT FENCE 10' MAXIIAIM CENTER TC 36" M:NI MUM LENGTH PENCE PCST. -? CENTER DRIVEN A Ulm- OF t6' ix'] GROUND ' 1 -16 TILE M REICH- CF C?CTEXEXT:LE GLASS " 1 9' MINIMUM DEPTH IN GROUND F'OM FLCp PERSPECTIVE VIE W 36' MINIMUM FENCE-, POS. ;ENGTH F;LT CLDT1+° FENCE P05F SEC-10N u1NIMWM zD' ABCVE PLO. GROUND UND1ST 4EC GRUMG TOP VIEW EIbED GEG`EXT ILE CLASS 4 : G:- s' V:.9-;CAL!' O N KE POSF DNIYE4 ? :NT TC THE f$ GRU `ND N7 NIMIM U 16" PDS-S V -L THE GROUND R EE:119N'a CROSS SECTION SECTION A ? STAPLE STAPLER Si ANDARD S`MER JOINING TWO ADJACENT SILT FENCE SECTIONS ca`Atructim saacifitctiau I. Ferias Deets shall as c mini- of 36' Mang a,;- 16' sin;- into tM prams. MOpa posts slval'. De 11? s 11.1 square Imi nieunl cut. w 1?' aiaoater 1' (mini) rCXfa ana -if be of so-d duality na'aa00d. Steel posts rill as stanaord T an U section reignttng no- less "on 1.00 -'a per ;i- #-t. 2. Leafe[-ile sn011 be +-,.-a setlaely to ea- fence post elm rite ties an staples nt tco ana m1a-section -a Anal, octet ins ton - ng rapu?remenis ' for georeitl le Glass F: 1 iftsl le $tsnp-n 50 Ibs/in (min.; Test: MSMT 5D9 Tensile Yamllus 2L lu/in Imi n.: Test: I W 509 li Flor Rate D.3 ge'. ft'/ m;rife t-: Test: WSMT 322 Filtering afficlenoy TSS lmin.) Test: MSYT 322 7. Mare ants of geotexti l6 fabric toss toget- tnaY snCII be her l oppea. fol pea and steal ea to Drevenl sedi- aYposS. a. Si:T Ferca stroll De inepaetea Offer apCh ralnfell a M• aria la inl0 Tried .her. 0ulgas Dear gr Mxn se0ieent aCO.sa:l atian rearnec 50'. of Ina 4ay-ic Might. ' LSII?AT?Pp W IIS,CW.TOL' PAGE YAffiIM-0 7?A®ghT a HiVi&P? 71 80'J. LiM?PdY1gN ARE 6 -IS -1 RAMM XQUIll R AIDLL1nrTl1ATTON CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 II I ?I l ?? I L?. r iObinla' F4 NYx ti Hf? A. 1y males IiYs W I `...1 acts ,`)^ '1 1a l1YA PA.a ss? xuim R i. The qrY ev®esem iec Imtel latim It W In-sire- slva awe 1e d esm r . sd loaf fl ltari saiee for strsm tNet peeerel lY carry at oeafNm fIP. I.. Meterlel se.clNrtims I. S.i I Minor - }11 IeCi Md time W gM,d WI. be 2. Flle .w fabric - T f- date men: M m+o,.? rrrm opal Cing mIT of oMieaa Cale pal,arl< fi=ts r 'fC3 of Plyatr. lb eYrtc •..II -7' bsa-l. e....a-d csOi alsYymoursmC, ell/-, ad rot raistent. A me fact later of 2- .-i Cms w M I-ad of h l+- -1- J. 6Mim li -:lase I yebim mi seal eat m. rsal lrs.enis listd 1. Mgs.x. l- 0--i- hsalnasan` I. sir.CVre to Y IMeI Id I- is first meet of valeta to Iron sdlear W-st" G¢ln mmtr.rtlm eCirlr la. :. Tb to olaro o1 roe Alm IA ro b. rrs N 'Na'. 3. The elatenu I.f.en td diW W roe dlsterem Is f0 a dn.elmsd by floe rate or the rmraf. A. ?Im beaY.ls w b•.ae m Ina or 11 rllrl o Idkltd bX dtere.rlw YeCla. s. s-- Is b r®le s plem st ell dlslvrW raA Yen sae aselll ltd In emr/Acv .lfY'. ta0rm.d ed1sR W ermim intro: 6. fnw*alea sdWt Is sa d. pe-Idlcslly W disposed at 1. In . Mal d1spamal ew -1. ms l0a- eppwd im flm"l .1. .l ales OtWfw f/te•.a P ~ Ilea bs 141 ap m slprond ). le u W. r 111- b, er Ieacling o1blq 61 hrStreef Stara Me I 5?frflY >}aAS WPD I1"ADu7RA ?1 0? ?.oli? CM M C 0) J co w J ?N a Qz ?Yin? 00 LLJ x (N 21) N ma fill U d .Pan 0 6 ^ w M O ?r O O /? U W A.ti V 41 ?al CD 4-0 CD VJ kM u 0 ??R tiant0j ?a q?9 C? H Ui a PSI U U ?al Uc A U 00201FC1 x fD N0 W rM xJO`r M r P !?7 W A b b a A b 9 m rn 1 1 1 1 DETAIL 9 - STONE OUTLET SEDBM ENT TRAP - ST II FLOW COMPACTED EARTH EMBANKMENT B 1' MIN TOP OF EMBANKMENT aq TO 712" WEIR LENGTH STONE A 1' MIN ?J1 1 4' MAX. 2 HEIGHT EXISTING =11;1?i'1?i i1 EXISTING GROUND GROUND B SECTION B-B V APRON (1' THICKNESS) 4' MTN. WIDTH 3,4 TO 11,2' 2 {' ---{ STONE 1(- WEIR CREST-,,,? py - 'iq FL -OWSTORAGE r 3' MAX EXCAVATE FOR REQUIRED WET STORAGE BOTTOM ELEVATION / '--GEOTEXTILE CLASS C SMALL RIP-RAP 4" TO 7" Construction Specifications NOTE: 5' MINIMUM LENGTH UP TO 5 SECTION A-A ACRES: OVER 5 ACRES USE STONE/RIPRAP SEDIMENT TRAP ST-IV. 1. Area under embankment shall be cleared. grubbed and stripped of any vegetation and root mat. The pool area shall be cleared. 2. The fill material for the embankment shop be free of roots and other woody vegetation as well as over-sized stones, rocks. organic material or other cbjecticnable material. The embankment sho I I be caApocted by traversing with equipment while it is being constructed. 3. All cut and fill slopes shall be 2:1 or flatter. 4. The stone used in the outlet shall be small rip-rap 4" to 7" in size with a 1' thick layer of 3,4" to 11,Z washed aggregate placed on the upstream face of the outlet. Stone facing Shoff be as necessary to prevent clogging. GeotextI le Class C may be substituted for the stone facing by placing it on the inside face of the stone outlet. 5. Sediment shop be removed and trap restored to its original dimensions when the sediment has accumulated to one half of the wet storage depth of the trap. Removed sediment shop be deposited in a suitable area and in such a morner that it will not erode. US.DEPARTMENf OF AGEH.ULTURE PAGE MARYLAND DEPARTMENT OF ENVIRONMENT Ste, CONSMATRDI S? C -9 - 1e WATER MANA(MIENT ADI@DSDTA170N CLEAR CREEKS CONSULTING W 1317 Knopf Road, Jarrettsville, Maryland 21084 (410) 692-2164 STONE OUTLET SEDRII ENT TRAP - ST II 6. The structure shall be inspected periodically and after each rain and repairs made as needed. 7. Construction of traps shop be carried out in such a manner that sediment pollution is abated. Dnce constructed. the top and outside face of the embankment shall be stabilized with seed and ailch. Points of concentration inflow shall be protected in accordance with Grade Stabilization Structure criteria. The remainder of the interior slopes should be stabilized tone time) with seed and mulch upon trop completion and monitored and maintained erosion free during the life of the trap. 8. The structure shalt be dewatered by approved methods. removed and the area stabilized when the droinoge area has been properly stabilized. 9. Refer to Section D for specifications concerning trap dewatering. 10. Minimum trap depth shall be measured from the weir elevation. 11. The elevation of the top of any dike directing water into the trap must equal or exceed the elevation of the trap enbankmment. 12. Geotexti19 Class C shall be placed over the bottom and sides of the outlet channel prior to the pIocement of stone. Sections of fitter cloth must overlap at least 1' with the section nearest the entrance placed on top. The filter cloth shall be embedded at least 6" into existing ground at the entrance of the outlet charnel. 13. Outlet - An outlet shall be provided. including a means of conveying the discharge in an erosion free manner to on existing stable ononneI I U SOIL CDISE3 WATWN SERVICE C P9•- D?A I WATER MANAGNMENP ADDI@OSfBAMN b 0?1 0) M 0) I N CD 0) N 7dQZ Y N CU M «?+ ?0 N W N m a V 0 f?it U 114 Z q o° 0 Iz ?4 "p BUJ U CU : P4 ? Z 4 tiro; ,,qq ..4 O n?i lb. PO ?a9? a q,? b pvo a L) m ® m ? g Fr L)+ ?i 0 m 1 A *? y DISCHARGE TO UNDISTURBED/ STABILIZED -CREST AREA ELEVATION PERSPECTIVE VIEW 12" MINIMUM OUTLET ELEVATION APRON (SEE NOTE) 1 1 1 1 1 b 0 0 a 0 Diggs Boulevard Storm Drain Relocation Plan View T54 ?, J4? Storm Drainage Des' Data Structure ID Pipe Section Invert of Pipe Invert of Pipe Pipe Slope (%) Structure Type Length ft Upstream End Downstream End M11-1 Top Bottom Proposed 48" NA 761,5 755.5 NA Manhole SD-1 85.3 759.3 756.58 3.2 Existing 24" RCP SD-2 114.55 759.90 758.02 1.6 Existing 15" RCP SD-3 Proposed 24" 350 756.8 755,75 0.3 RCP SD-4 Proposed 18" 202 757.81 756,8 0.5 RCP SD-5 - Proposed 18" 38 757.21 757,02 0.5 7 RCP SD-6 Proposed 18" 38 758.00 757.81 0,5 RCP On 5: CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarretts ille, Maryland 21084 (410) 692-2164 J'91 oh ? it I it Arpmd 191 RCP ?• MIAi aa^so fro He Abuedoocd)-. P, 4dl3"M.cboh--l ? \ ' I Athletic Fie Fence ld-- 0e V 'PO XQ? % %4 1. ? ?t _ ae2 Store Water la Inlet 0 Be A ) ` j ?' `? Aq?ald iP RCP r Athletic Field Fence J ! 1$ r I ? frn Be Al.-Z d)`? I "i 24' RCP Storn Water Pipe t I i cm M ? MNr- J Cn N d a z X10 0 W x N ?co l? a? 8 i z e JS M CU 4J CD t l?rn? ? rb ?® C F4 ? eA i a ®? r C ? 9 C? d 1 1 765 1 . 760 Proposed Drainage Swale Existing Grade Proposed Grade 1 1 P b -? i- . 7551 End Section ?.1 Proposed Drainage Swale Existing Grade 765 Proposed Grade 760 l- D D 0 0 755 1 End Section Proposed 2499 RCP 0.3% Proposed 2499 RCP @ 0.3% CLEAR CREEKS CONSULTING 131; Knopf Road, ]arrettsville, Maryland 2 .1084 (410) 692-2164 Stadium Drive T ? o Proposed 4899 Manhole w Existing SD Inlet rl_ Existing 24" SD @ 3.2% Jco00 00 U) N d 'a z tyCDtoW et ? ? uJ X CM WNW? ? a is s z Stadium Drive ,F -f??® 0.4 C3 Proposed 1879 RCP 0.5% ?, qo M a Proposed 4899 Manhole ?® b 0 E+ V Existing 1599 SD L) @ 1.6% R Existing SD Inlet Proposed 1899 RCP @. 0.5% Existing SD Inlet Diggs Boulevard Storm Drain Relocation Profile Proposed 1899 RCP o.s®i© i-D4 04 1 1 0 1 1 b P 0 a a 0 0 Existing Manhole -- -- rkvlew_ Drive ---- so-i P a. ? ----- ,- 2#sHa 30" ell - Proposed 48" Manhole- (NA-1) - 770 ?65 - -?65 Vi -,Vd ?Z. d?vr va- va-v? 4 Dlr Ian r e '1 P1 -P!L - P!L - P/L - Pl4'- /? • Tributary #4?S P ,\P TJ7?atwe g \-?'TrIbU nary #4\. v lann.e-6,, Thalweg =?? \\\\ -4-1 -1/d-1, Park View Street Storm Drain Installation Plan View I ==-CLEAR CREEDS CONSULTING 1317 Knopp Road, jarrettsville, Maryland 231084 (410) 692-2164 J ? eel J a'a- zr? Storm Drainage Des' Data Structure ID Pipe Section Invert of Pipe Invert of Pipe Pipe Slope (%) Structure Type Len h (ft) Upstream End Downstream End MH-1 Top Bottom Proposed 48" NA 767.0 754.5 NA Drop Manhole SD-1 62 763.5 763.2 0.5 j Eidstin 30" RCP SD-2 Proposed 36" 15 756.8 756.5 2.0 RCP SD-3 Proposed 12" 270 756.1 754.5 0.55 RCP 0) M (6 X 10 0 M W ?m z o ® d X f:7 M? c? V p #1 Lob 1 0 P 1 0 1 b 1 0 0 Parkview Street Proposed 48" 6 Drop Manhole 774 76 760 755 750 749 g 0.5% CLEAR CREEKS NSU I TING 1317 Knopp Road, Jairettsville, Mlarylarnd 21084 (410) 692-2164 Right Top of Dank VB°.B°a IW,a?. ?PAAiotrpr Park View Street Storm Drain Installation Profile B` J -J 0 N OD :5 a z? t??Mcr) 0M W x? I I I e? Ri 65 ?s sa ?' K=4 _ ? F ® p ? F ? L x.02 0? L? ? 1 1 1 1 1 / Parkview Street 765 765 762 759 756 753 Emoting @ 2.0% -- °_ CLEAR CREEKS CONSULTING 1317 Kropp Road, iarrettsaille, Maryland 21084 1'410) 692-2164 Park View Street Storm Drain Installation Profile I o'J o1 ? M V (D N CO r A r z N 0(D * M M U; ? d ?s P U ?z ?0.?? -?j too rn w Fa 00201M 1 1 0 1 1 0 a 0 STANDARD STORM DRAIN HEAVY TRAFFIC MANHOLE FRAME AND COVER, -I 8" TYP.-,I I - 1 I• ?I Mw w i I I, w w ? I o LL w , 'I rol ?'Q ' I OI ?F w w' - U' x w. of o z z Z Li v, ww m a `_Ty CEMENT [MORTAR PRECAST CONCRETE GRADE RINGS OR BRICK MASONRY (12" MAX, -" 2 COURSES MIN.) (ECCENTRIC CONE UNIT i MIN- CIRCUMFERENTIAL j REINFORCING (48" Di A. TAPEE)- ,As = 0.12 S0. IN./FT. NOTE 4 (STEPS SHOWN IN THIS LOCATION FOR ILLUSTRATION ONLY) RISER UNIT S RISERS IN I' 2 3' OR 4- ER M ?1 EtiGTHS - SEE NOTE 10 GASKET ' j j ?A-s.T M- 4 C JOINTS NOTE -4 3 } - 8 45" DIA ON. CIRCUM. REINFORCING PER i A -S T.M. C - 478 NOTE 11 NOTE 12 NOTE 6 NOTE 4 -FLEXIBLE GASKET CONNECTOR-\ ; PPE f SIZE NOTE 12 I ! z ZF Li ?w m m E n , I MAXIMUM THROUGH LATERAL PPE DIM. PIPE DIA. 36" OR LARGER; SEE D-3.02,3 27 OR 30"1 NONE ___ 24" 1 .2 - 2"1' ,5" UP TG 18 1 SAME AS TH OUCH PIPE TABLE BASED ON 90' ANGLE FROv LATERAL TO THROUGH PIPES. FOR OTHER ANGLES. MAINTAIN 2' Y.N. OF RENFORCED WA B WEEN PPE OPENINGS MEASURE ALONG INSIDE Wk-L. PRECAST CONCRETE GRADE RINGS OR BRICK MASONRY (12" MAX_, ?2 COURSES MIN.) CEMENT MORTAR 8,. NOTE 4 NOTE 7 PICK HOLES ON EDGE OF COVER. WHERE FRAME & COVER IS USED OUTSDE OF BALTMORE COUNTY R /W OR EASEMENTS, SUBSTITUTE THE WORDS "PRIVATE STORM DRAM" FOR "BALTIMORE COUNTY STORM DRAIN" ON THE COVER. 2'-3 7/8 „ 2- 7, 2 " ` F 1/8 -r 2'-C" 5" 1/ ., 2'-10" 21/2" 1/2';) 1/2 R _ 5? SHALLOW rnnmr 1 " 8" MIN. + I' r ' I `a ' BRICK ON EDGE _ 8" MIN 7, B_ - FOR INVERT BRICK ON EDGE MIN. SLAB FOR NVERT ' i BE ASTM D ERIK ON EDGE BRI ERICK SHA REINFORCING BRICK SHALL BE ASTtM GRADE SS. " AS= C 39 S0. IN/FT. EACH WAY C32 GRADE SS 48 PRECAST MANHOLE TYPE B 48" PRECAST MANHOLE TYPE A (SHALLOW) (STANDARD) PIPE SIZE ; BASE UNIT LENGTH - MIN. MN. ('H), TYPE A MAX. (H), TYPE B NOTES : 15" DIA 2 6s' UNLESS OTHERWISE NOTED. MANHOLE TAPERS. RISERS AND 18" TO 24" D(A. 7 BASES SHALL BE FURNISHED IN STRICT ACCORDANCE WITH 27° TO 30" DIA 8 5• A S.T.M- DESIGNATION C-478 (LATEST) FOR "PRECAST . REINFORCED CONCRETE MANHOLE SECTIONS'. 8. PRECAST MANHOLE RISER. JOINTS: THE MANU- FACTURER SHALL ' FORM MALE AND FEMALE ALL CONCRETE SHALL BE 4.500 PSI COMPRESSIVE STRENGTH. EN}S OF JOINTS USING THEIR OWN DESIGN. HE JOINTS SHALL BE SEALED BY THE CON- T. REINFORCING FOR TYPE E THE SAME AS FOR TYPE A. TRACTOR AND MADE WATER-TIGHT USING -E MANUFACTURER'S RECOMMENDED AST+A OR 4. SEE STANDARD DETAIL PL27E; = FOR MANHOLE STEP AASHTO-APPROVED SEALANT. SPECIFICATIONS, SPACING AND PLACEMENT. STEP LOCATION 9. SEE STANDARD DETAIL PLATE G-3 FOR SHOWN :S FOR ILLUSTRATION ONLY. LOCATE STEPS 90' FROM ' . IONS & PLACEMENT OF PRECAST GAST VAIN FLD 8' CHAINEE WITHIN IALIFHOLE- C CONCRETE GRADE RHJGS- 5. A PRECAST MANHOLE SECTION MAY BE PACED OVER - C. USE LARGEST APPtCABLE RISER UNIT EXISTING PIPE. SEE DETAIL FOR PRECAST MANHOLE ANHOLE " " LENGTHS. USE A MAXIMUM OF ONE- I FOOT DOGHOUSE RISER. STANDARD DETAIL PLATE 0-3.07 LENGTH RISER, UNIT PER STRUCTURE ,,. MINIMUM CIRCUMFERENTIAL REINFCRCE?b1ENT PER AS T M - „ 4-8. 11 SEE DETAIL PLATE D-;.026 FOR PRECAST TOP SLAB DETAIL FOR SHALLOW MANIHOLE ?. JSE A MINIMUM OF 1 MANHOLE STEP IN BASE UNIT. . 2. 2" MIN. (PIPE OPENING TC JOINT) OR SPECIAL (SIGN. ? ?t?PPROVA/L L)EF A;; f ILNT `" 1 R\i Lk 1 O l BL'C WORKS 1 L ror \ L `1GTA[L - , ?/ DuE PRECA r ' . 7 rs ST A & B - I ^,I _E.=.I MANHOLE ?I? 1,7F FOR PIPES 15" TO 30" HORIZ. DIN ?-3.01 CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsille, Maryland 21084 (410) 692-2164 7/8 " B 3/4 . DIAMETER HOLES. ?7? 2'-17/8 /8,. 51 CASTINGS 7SURFACES. MACHINED ON BEARIN3/4 R /4 31 \??C /2 R T-O = 5" SECTION "A-A" 3 ?< 3 3/8 1/8 3 •, 3/4 - 3/4 ?8 K , /8 /4 I ? 8 3/4 38' SECTION "B-B" NOTES FRAME AND COVER FOR 54" AND LARGER BENDS AND JUNCTION CHAMBERS SHALL BE 2'-6" WITH LETTERING AND HOLES AS SHOWN FOR T-0" FRAME. CASTING MATERIALS SHALL BE GREY IRON. USE OF SHALLOW FRAME SHALL BE APPROVED BY ENGINEER,. 1/8 j 1/2" NOMINA'- WEIGHTS I 9" FRAME 4" SHALLOW FRAME FRAME 250 Lbs. 165 Lbs. COVER : 135 Lbs. 135 Lbs. TOTAL 385 Lbs. - 300 Lbs. APPROVAL DEPARTMENT OF PUBLIC WORKS STORM DRAINAGE DETAILS D 24° HEAVY TRAFFIC MANHOLE BUR DF 2N IN x / srRUL?roe FRAME & COVER ISSUED DClOBE.R. 1977 REVISED AUGUST.. 1997 REVISED PLATE D-3.05 ?pCr ? cm M c ? N00 co ?N ?aaz ct) _Y N m f0 r 0 W x04 2 ? 4) Cli M a N ?s s V a z 0 o a ? 0 ? CD C9 ?z ? U CD U' c ao A a inA b a b M a UI ?K a 0 bp c d FI U d 0 00201FC1 \ --DIAMOND GRID A L I --{3 J?IIj I L I I 1 0 0 C r i 0 0 a SLOPE (2 : 1 MAXIMUM) 6 INVERT ELEVATION TO BE AT ,MIN._ THE PIPE END OF ',HE END SECTION. ELEVATIONS TO BE NOTED ON CONSTRUCTION PLANS. s? Ope /SAME GRADE AS PIPE INVERT rC I CP iCNAL -? e CONCRETE FOOTER Y' LONGITUDINAL SECTION D ?• C B \ PIPE PAY LENGTH I TONGUE END ON INLET SECTION. GROOVE END ON OUTLET SECTION -' T SEE NOTE 3. PLAN FNl1 1/IGW C! AS WIRE j PROT ' tow ? l Y<---- \?' ALTERNATE : S 4 STONE-FILLED BASKET CHANNEL ECTION GEOTEXTILF GABION AT OUTFALL NOTES TABLE OF DIMENSIONS CONCRETE END SECTION CONCRETE FOOTER 1. END SECTIONS MUST BE DIAMETER SLOPE A B C D E W x Y REINFORCED TO CONFORM , WITH CLASS IV PIPE. i 12" 3:1 a" 2'-0" 4'-03/a"'I 6'-0?/8" 2'-0"? 3'-0" 12 9" 2. CONCRETE FOOTER SHALL BE 15° 3:1 6° 2-3" ' 3-10" 6'-1." 2-6" 3'-6" 12 9" USED WHEN SPECIFIED ON THE 1B" 3:1 9" 2'-3" 3'-10" ? 5'-1" 3'-0": 4'-0" 12" 9" ' PLANS. COST OF CONCRETE FOOTER TO BE PAID PER 21 3:1 9" j 3'-0" 3'-1'/2"l 6'-1'/2" 3'-6"', 4'-6° 12" 9" CUBIC YARD OF MIX NO. 2 CONCRETE FOR MISCELLANEOUS 24" 3:1 19'/2" 13'-7'/2" 2'-6" 6'-1'/2" 4'-0"1 5'-C", 15" 9" STRUCTURES. REINFORCEMENT 27" 31 10 /2 4 -1 /2" 2'-0' 6 -1 /2 . 4 -6"? 5 6 15° ' 9" TO BE4 BARS 30" 31 1'-0 4'-6" 1 17 Yi 1 6'- 13/4 5-0"1 6 0 . 15" 9" 3.PREFERRED USE OUTFALLS ONLY - 36" 3.1 1'-3 5'-3" 12-10'/4-I 8-1 /4 Y4" 6'-0"' 7 3°I 15 L 9" EXTRA CARE MUST BE TAKEN TO PROTECT ADJACENT SLOPES FROM 42° 3:1 s eR 1-9-'1 5'-3"'', 2'-11" 8'-2' 6'-6"' 7'-9" 15" 9" EROSION WHEN USED IN LIEU OF A HEADWALL AT THE INLET END 48" 3:1 2'-0" 6'-0" i 2'-2" -2" 7'-0" 8'-6"i 18" 12" '- OF A PIPE. 54" 2.4:1 2'-3" 5'-5" j 2'-9'4- 8'-2'/4" 7'-F;"" 9'-0" 18" 12" NOTE: CONTRACTOR HAS OPTION OF F URNISHING END SECTIONS CONFORMING TO DETAILS ON THIS SHEET OR END SECTIONS CONFORMING TO DETAILS ON PLATE D- 1.10 "P"' VAl. DEPARTMENT )I" PCB[.IC WORKS 1SSUEO11 0C0BER Ien REVISED. AUGUST. 1991 -- mRro -- STORM DRA1_NAG1', DRTAiLS REVISED. CONCRETE END SECTION VU?[o?i3? 7 RRU?G 1 ROUND CONCRETE PIPE D-1.11 j nar: , CLEAR CREEKS CONSULTING 1317 Knopp Road, Jarrettsville, Maryland 21084 (410) 692-2164 ASPHALT PAVEMENT REPAIR wm 1-1 oft 1-2 ' 1r AWKW PAVEMENT, ?O 9f a a" E?AL TO - MIN. ATEQ OPENING IN, ll? E12 MIX) ACE COURSE PAVEMENT TO OE SAWED OR NEATLY utAR RFA A O T S C j -E? MO PAYEMENIi r+.r.;' DasTm BASE ASPHAV (NO) ` RASE TO 0 7 SUBORADE 6 MIN ) 12' SURORADE BACKflLL (SEE NOTE) UNDt$TURM SOL PIPE STABRVATION RIP REOtIUtED M ENGINES) CIIM4IClED TO AT IOIt Or 51111III1110AND 094W wrtoo) T, Is BY A BE IN OENSI{1? AND STS STAN CARD wiw =M& _,?Il1E DEN1111 tt SMALL IIL 110. CITY OF WINSTON-SALEM DEPARTNm or PUBM Woo N.LS, REYgio a-ot-le WPM= ' ) 0 FG F2 pm mol SHOT. 1 x,05 0?;i kl?) cm V) CD Ict (D 0 r*_ J co w J aN 3aQz m Y_ co ? Cc 0 N N `?' co ma i. +1 U a z ?y d 0 4 +j gea IV .5 Oy d ?po Vi a A t5 pw p 0 ., Ir +d,'? ? pr a A ' b q C 4-) F a q ®l tl a) b U u n 1 1 I p 0 p 1 b 0 9 0)M r 0) N N N 0) J 7 a. aZr?L GfYNaa? 0}100 CO fOt0 ???M \ \ W Q1 M 155 _?0_'?N X56 \ m a / "s6 aP PP ShaHow Marsh 1S4 RipRap Outfall Protection p^ 1 Sediment Forebay ?g ropool q a p n in Pi , a 155 ? ? ? °1 ?g3 0 1s6 I 14558 111111 z ?,? 154 /? 160 «^ ------------ CD 0 5 J?51O enanc Access 0 Sanitary Sewer a Sanitary Sewer fi -77 RipRap Outfall Protectiop Storm Drain Qa a0.. r Parking Lot f? y A ° b q pa D3 F U q b it U o Scale:1 in. = 40 ft. M CLEAR CREEKS CONSULTING 1317 Knopp Road> jarrettsville, Maryland 21084 (410) 692.2164 MSON DATE API THIE w&mom 00201FC1 M1lr 0 0 0 1 1 D 0 1 Sediment Forba -7153 - ??.154 Shallow Marsh CLEAR CREEKS CONSULTING 1317 Knopp Road, jarrettsville, Maryland ? 1, 084 (410) 692-2164 I i 6L R a •L rr i Shallow Marsh Scale:1 in. = 20 ft. co qt to J N 00 I` 'L z t N Y c ?° CO co UJ W N N is U z m ° o +j o O y rn MU h b CD W 0 4 41 ~ CL b UI m ? b O 00201FC1 X51,0 Outfall Structure - Cross-Section Outfall Structure - Profile Geoteztile Liner -?Wl- RipRap Outfall Protection F Al CLEAR CREEKS CONSULTING W 1317 Knopp Road, Jarrettsville, Maryland 2, 084 (410) 692-2164 l U, X54.5' 42" Sanitary Sewer X5(0,0° ?? o? 0) c) rn 19t CD ?N00 a- .QzN r1L Of ca?WM co W NC 01tr N m a is s V 0 0 a z q o 0 a Oy ? mU ?z ? m C ? ?r a?A C L im 41 a U? i ®? r b Cu U d 0 n D i 0 a • 0 p 0 i a a