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HomeMy WebLinkAbout20051425 Ver 1_Complete File_20050727Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality August 5, 2005 DWQ# 05-1425 Guilford County Mr. Robert Connell 6380 Gumwood Road Oak Ridge, NC, 27310 APPROVAL of 401 Water Quality Certification with Additional Conditions Dear Mr. Connell: You have our approval to conduct stream restoration activities along a total of 950 linear feet of an unnamed tributary to Beaver Creek located on your property at 6380 Gumwood Road in Oak Ridge, Guilford County. In addition, you have our approval to place permanent fill in 20 linear feet of this same unnamed tributary for the purpose of installing a stream crossing. These activities are to be conducted in accordance with the attached conditions and as described in your application received by the Division of Water Quality on July 27, 2005. After reviewing your application, we have determined that these activities are covered by General Water Quality Certification Numbers 3404 and 3495, which can be viewed on our web site at http://h2o.enr.state.nc.us/ncwetlands. These Certifications allow you to use Nationwide Permit Numbers 14 and 27 when they are issued by the U.S. Army Corps of Engineers. In addition, you should secure any other applicable federal, state or local permits before you proceed with your project, including (but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permits expire unless otherwise specified in the General Certifications. This approval is valid only for the purpose and design that you have described in your application. If you change your project, you must notify us in writing, and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of these Certifications 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). For this approval to be valid, you must follow the conditions listed in the attached Certifications, as well as the additional conditions listed below: 1. The following impacts are hereby approved as long as all other specific and general conditions of the Certifications are met. No other impacts, including incidental impacts, are approved: Amount Approved Plan Location or Reference Streams 970 linear feet Unnamed tributary to Beaver Creek located on the Robert Connell property at 6380.Gumwood Road in Oak Ridge, Guilford County. NorthCarolina Xturally North Carolina Division of Water Quality Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone (919) 733-1786 FAX (919) 733-2496 2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet http//:h2o.enr.state.nc.ustncwetlands Customer Service Number: 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer-50% Recycled/10% Post Consumer Paper Mr. Robert Connell Page 2 August 5, 2005 2. Within 30 days of completion of construction, documentation must be provided which demonstrates that the stream restoration plan has been implemented as proposed and approved. This documentation must include as-built drawings showing that the restored stream reach has the profile, pattern, dimensions and adjacent riparian zone specified by the restoration plan. 3. Appropriate sediment and erosion control measures which equal or exceed those outlined in the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual or the North Carolina Surface Mining Manual (available from the Division of Land Resources at NCDENR regional offices or the central office), whichever is more appropriate, shall be designed, installed and maintained properly to assure compliance at all times with the North Carolina water quality standards that are applicable to Class WS-III (NSW) waters as described in 15A NCAC 02B .0215 Fresh Surface Water Quality Standards For Class WS-III Waters. Such measures must equal or exceed the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. These measures must be maintained on all construction sites, borrow sites, and waste pile (spoil) sites, including contractor owned and leased borrow pits, which are associated with this project. 4. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control measures in wetlands or waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the project is completed or, if applicable, within six months of the date that the project is released by the North Carolina Division of Land Resources. 5. No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the Pre-Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control "Best Management Practices" shall be performed so that no violations of state water quality standards, statutes, or rules occur. 6. Monitoring of the restoration is required. Within 30 days of the date of this authorization, a monitoring plan must be submitted to DWQ. This plan shall include the following items: a) a 5-year monitoring schedule which is to be established upon completion of the restoration work. For the first year of monitoring, quarterly inspections are required. After the first year, annual inspections are required. The monitoring plan shall list a proposed schedule during which inspection and review of the restoration will be conducted. No less than two bankfull flow events must be documented during the 5-year monitoring period. If less than two bankfull events occur during the first 5 years, monitoring will continue until the second bankfull event is documented. Monitoring data collected shall include channel stability analysis, plant survival analysis, and reference photos. b) clearly established monitoring stations (stream segments). c) the requirement for written reports of all field inspections. These reports shall detail stream bank stability, the condition of all measures constructed as a part of the restoration effort and whether any measure is failing or showing evidence of pending failure, the condition of riparian restoration efforts (including plantings) and whether any are failing or are not surviving, and measurements of the Mr}Robert Connell Page 3 August 5, 2005 amounts of sediment that are being deposited on the stream floor. These reports shall also assess the effectiveness of diffuse stormwater flow and the condition and effectiveness of any stormwater control measures that are required. d) a written annual report due within 30 days of the end of each monitoring year. This annual report shall be sent to DWQ's Winston-Salem Regional Office. The report must list the date of each inspection, describe the inspection results, include digital photographs of each station, and describe any repairs or corrections made and their dates of completion. For the first monitoring year, the annual report shall also include copies of the quarterly field inspection reports. e) procedures for undertaking repairs and corrections. If monitoring efforts show the need for repairs or corrections to any restoration measure or riparian zone restoration effort, then such repairs or corrections must be initiated within 20 days of the observation of such need. Any such repairs and/or corrections shall be fully documented in the annual report. Deviations from this protocol may be acceptable when they can be justified. Proposed exceptions will be evaluated on a case-by-case basis by DWQ and will be coordinated with the U. S. Army Corps of Engineers and other appropriate review agencies: 7. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of Completion" to notify NCDWQ when all work included in the §401 Certification has been completed. This certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the address listed on the form. Along with the Certificate of Completion, please send photographs upstream and downstream of the culvert site and along the restored stream reach to document correct installation. 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, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336- 771-4600 or Cyndi Karoly in the Central Office in Raleigh 919-733-9721. Sincerely, Alan W. Klimek, P.E. AWK/cdl Mr. Robert Connell Page 4 August 5, 2005 Attachments cc: Todd Tugwell, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office Winston-Salem DWQ Regional Office Central Files Wetlands/401 File Copy Jessica Regan, Soil & Environmental Consultants, PA, 11010 Raven Ridge Road, Raleigh, NC 27614 W A T ?9QG r o ?c Mr. Robert Connell 6380 Gumwood Road Oak Ridge, NC, 27310 ?,u C? 1 1 20Q5 S QUALITY WnMWPND &O XE BRMKH APPROVAL of 401 Water Quality Certification with Additional Conditions Dear Mr. Connell: Alan W. Klimek, P.E. Director Division of Water Quality August 5, 2005 DWQ# 05-1425 Guilford County You have our approval to conduct stream restoration activities along a total of 950 linear feet of an unnamed tributary to Beaver Creek located on your property at 6380 Gumwood Road in Oak Ridge, Guilford County. In addition, you have our approval to place permanent fill in 20 linear feet of this same unnamed tributary for the purpose of installing a stream crossing. These activities are to be conducted in accordance with the attached conditions and as described in your application received by the Division of Water Quality on July 27, 2005. After reviewing your application, we have determined that these activities are covered by General Water Quality Certification Numbers 3404 and 3495, which can be viewed on our web site at http://h2o.enr.state.nc.us/ncwetlands. These Certifications allow you to use Nationwide Permit Numbers 14 and 27 when they are issued by the U.S. Army Corps of Engineers. In addition, you should secure any other applicable federal, state or local permits before you proceed with your project, including (but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permits expire unless otherwise specified in the General Certifications. This approval is valid only for the purpose and design that you have described in your application. If you change your project, you must notify us in writing, and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of these Certifications 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). For this approval to be valid, you must follow the conditions listed in the attached Certifications, as well as the additional conditions listed below: 1. The following impacts are hereby approved as long as all other specific and general conditions of the Certifications are met. No other impacts, including incidental impacts, are approved: Amount Approved Plan Location or Reference Streams 970 linear feet Unnamed tributary to Beaver Creek located on the Robert Connell property at 6380 Gumwood Road in Oak Ridge, Guilford County. Noy` Caro ina Naturally North Carolina Division of Water Quality Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone (919) 733-1786 FAX (919) 733-2496 2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet hftp//:h2o.enr.state.nc.us/ncwetlands Customer Service Number: 1-877-623-6748 Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Mr. Robert Connell Page 2 August 5, 2005 2. Within 30 days of completion of construction, documentation must be provided which demonstrates that the stream restoration plan has been implemented as proposed and approved. This documentation must include as-built drawings showing that the restored stream reach has the profile, pattern, dimensions and adjacent riparian zone specified by the restoration plan. 3. Appropriate sediment and erosion control measures which equal or exceed those outlined in the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual or the North Carolina Surface Mining Manual (available from the Division of Land Resources at NCDENR regional offices or the central office), whichever is more appropriate, shall be designed, installed and maintained properly to assure compliance at all times with the North Carolina water quality standards that are applicable to Class WS-III (NSW) waters as described in 15A NCAC 02B.0215 Fresh Surface Water Quality Standards For Class WS-III Waters. Such measures must equal or exceed the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. These measures must be maintained on all construction sites, borrow sites, and waste pile (spoil) sites, including contractor owned and leased borrow pits, which are associated with this project. 4. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control measures in wetlands or waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the project is completed or, if applicable, within six months of the date that the project is released by the North Carolina Division of Land Resources. 5. No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the Pre-Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control "Best Management Practices" shall be performed so that no violations of state water quality standards, statutes, or rules occur. 6. Monitoring of the restoration is required. Within 30 days of the date of this authorization, a monitoring plan must be submitted to DWQ. This plan shall include the following items: a) a 5-year monitoring schedule which is to be established upon completion of the restoration work. For the first year of monitoring, quarterly inspections are required. After the first year, annual inspections are required. The monitoring plan shall list a proposed schedule during which inspection and review of the restoration will be conducted. No less than two bankfull flow events must be documented during the 5-year monitoring period. If less than two bankfull events occur during the first 5 years, monitoring will continue until the second bankfull event is documented. Monitoring data collected shall include channel stability analysis, plant survival analysis, and reference photos. b) clearly established monitoring stations (stream segments). c) the requirement for written reports of all field inspections. These reports shall detail stream bank stability, the condition of all measures constructed as a part of the restoration effort and whether any measure is failing or showing evidence of pending failure, the condition of riparian restoration efforts (including plantings) and whether any are failing or are not surviving, and measurements of the Mr. Robert Connell Page 3 August 5, 2005 amounts of sediment that are being deposited on the stream floor. These reports shall also assess the effectiveness of diffuse stormwater flow and the condition and effectiveness of any stormwater control measures that are required. d) a written annual report due within 30 days of the end of each monitoring year. This annual report shall be sent to DWQ's Winston-Salem Regional Office. The report must list the date of each inspection, describe the inspection results, include digital photographs of each station, and describe any repairs or corrections made and their dates of completion. For the first monitoring year, the annual report shall also include copies of the quarterly field inspection reports. e) procedures for undertaking repairs and corrections. If monitoring efforts show the need for repairs or corrections to any restoration measure or riparian zone restoration effort, then such repairs or corrections must be initiated within 20 days of the observation of such need. Any such repairs and/or corrections shall be fully documented in the annual report. Deviations from this protocol may be acceptable when they can be justified. Proposed exceptions will be evaluated on a case-by-case basis by DWQ and will be coordinated with the U. S. Army Corps of Engineers and other appropriate review agencies. 7. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of Completion" to notify NCDWQ when all work included in the §401 Certification has been completed. This certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the address listed on the form. Along with the Certificate of Completion, please send photographs upstream and downstream of the culvert site and along the restored stream reach to document correct installation. 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, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please telephone Daryl Lamb in the DWQ Winston-Salem Regional Office at 336- 771-4600 or Cyndi Karoly in the Central Office in Raleigh 919-733-9721. Sincerely, a-?L44?, Alan W, Klimek, P.E. T` AWK/cdl Mr. Robert Connell Page 4 August 5, 2005 Attachments cc: Todd Tugwell, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office Winston-Salem DWQ Regional Office Central Files Wetlands/401 File Copy Jessica Regan, Soil & Environmental Consultants, PA, 11010 Raven Ridge Road, Raleigh, NC 27614 Triage Check List Date: To: 8/1/05 F L E Project Name: Gumwood Road Stream Restoration Daryl Lamb, Winston-Salem Regional Office 60-day processing time: 7/27/05 - 8/25/05 DWQ#: 05-1425 County: Guilford From: Cyndi Karoly Telephone : (919) 733-9721 The file attached is being forwarded to you for your evaluation. Please call if you need assistance. ? Stream length impacted ? Stream determination Wetland determination and distance to blue-line surface waters on USFW topo maps ? Minimization/avoidance issues ? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman) ? Pond fill Mitigation Ratios ? Ditching ? Are the stream and or wetland mitigation sites available and viable? ? Check drawings for accuracy ? Is the application consistent with pre-application meetings? ? Cumulative impact concern Comments: As per our discussion regarding revision of the triage and delegation processes, please review the attached file. Note that you are the first reviewer, so this file will need to be reviewed for administrative as well as technical details. If you elect to place this project on hold, please ask the applicant to provide your requested information to both the Central Office in Raleigh as well as the Asheville Regional Office. As we discussed, this is an experimental, interim procedure as we slowly transition to electronic applications. Please apprise me of any complications you encounter, whether related to workload, processing times, or lack of a "second reviewer" as the triage process in Central had previously provided. Also, if you think of ways to improve this process, especially so that we can plan for the electronic applications, let me know. Thanks! Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. 2 0 0 5 1 4 2 5 kit any parucuiar item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing 11 i, L . 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ? Riparian or Watershed Buffer Rules Section 10 Permit ? Isolated Wetland Permit from DWQ 401 Water Quality Certification ? Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: 14. 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 Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), c p 1@ 622016r0'"i D II. Applicant Information J U L 2 7 2005 1. Owner/Applicant Information - WATER QUALITY Name: Bob Connell 4WTLMDSANDSTORMYVATERB JCH Mailing Address: 6380 Gumwood Road Oak Ridge NC 27310 Telephone Number: 336-643-1616 Fax Number: 336-643-1640 E-mail Address: rconnell@triad.rr.com 2: Agent/Consultant 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: Jessica Regan Company Affiliation: Soil & Environmental Consultants PA Mailing Address: 11010 Raven Ridge Road Raleigh. NC 27614 Telephone Number: 919-846-5900 Fax Number: 919-846-9467 E-mail Address:--_irean@sandec.com@sandec.com Pagel of 9 III. Project Information Attach a vicinity map clearly showing the location 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: Gumwood Road Stream Restoration 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 160100540105200012 4. Location County: Guilford Nearest Town: Oak Ridge Subdivision name (include phase/lot number): N/A Directions to site (include road numbers/names, landmarks, etc.): From Interstate 40. travel north on Hwy 68 to Oak Ridge. Turn right onto Hwy 150 and right onto Bunch Road. Turn right onto Gumwood Road. Follow Gumwood Road onto the Connell property. 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): (Begin Restoration) 36° 10'12"N 79'5736"W 36"°W (End Restoration) 36110'5"N 79'57'34"'W 6. Property size (acres): 27 acres (Project length = 950 ft) 7. Name of nearest receiving body of water: Beaver Creek 8. River Basin: Cape Fea r (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at htt_p://h2o.enr.state.nc.us/admin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Existing land use in the vicinity of the project is primarily residential, agricultural, and/or undeveloped. An unnamed tributary to Beaver Creek onsite has been excavated and degraded. Page 2 of 9 10. Describe the overall project in detail, including the type of equipment to be used: The project will consist of light grading installation of stream structures and the planting of vegetation. Typical heavy equipment will be used 11. Explain the purpose of the proposed work: The purpose of the proposed work is to restore/stabilize approximately 950 linear feet of degraded channel A culverted crossing of the unnamed tributary of Beaver Creek will be installed for access to the remainder of the property. 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 Notice of Violation was received by the owner on November 18, 2004 for failure to secure a 401 nationwide permit and for the degradation of the stream channel. A copy of this NOV is included 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. No additional impacts are 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. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream 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. Page 3 of 9 1. Provide a written description of the proposed impacts: Approximately 950 linear feet of stream channel (an unnamed tributary of Beaver Creek) will be stabilized utilizing in- stream structures, including a series of J-hooks and cross vanes Proposed impacts due to a crossing of the unnamed tributary of Beaver Creek include 20 linear feet of impacts, due to the installation of a culverted crossing The invert of the pipe will be buried, maintaining a natural bed and allowing for aquatic passage Structures will be placed immediately up and downstream of the pipe maintaining grade. 2. Individually list wetland impacts. Types of 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. Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within 100-year Floodplain es/no Distance to Nearest Stream linear feet Area of Impact (acres) N/A N/A N/A N/A N/A N/A Total Wetland Impact (acres) N/A 3. List the total acreage (estimated) of all existing wetlands on the property: N/A 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, 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. To calculate acreage, multiply length X width, then divide by 43,560. Stream Impact Perennial or Average Impact Area of Number Stream Name Type of Impact Intermittent? Stream Width Length . Impact indicate on ma Before Impact linear feet acres Crossing ut Beaver Culverted perennial 7' 20' 0 003 Creek Crossing . Total Stream Impact (by length and acreage) 20' 0.003 Page 4 of 9 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill, excavation, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Site Number indicate on ma Name of Waterbody (if applicable) Type of Impact Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. Area of Impact acres N/A N/A N/A N/A N/A Total Open Water Impact (acres) N/A 6. List the cumulative imnact to all Waters of the U.S. resulting from the nroiect: Stream Im act (acres): 0.003 Wetland Impact acres): N/A Open Water Impact (acres): N/A Total Impact to Waters of the U.S. (acres) N/A Total Stream Impact (linear feet): 20 7. Isolated Waters Do any isolated waters exist on the property? ? Yes ® No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. N/A 8. 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.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Current land use in the vicinity of the pond: Size of watershed draining to pond: Expected pond surface area: 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 Page 5 of 9 were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The design for the stabilization of the stream channel avoided several large diameter trees existing onsite in order to preserve as much of the buffer as possible Efforts were made to disturb the channel as little as possible, while still utilizing natural channel design principles and providing a stable channel. The proposed stream impacts due to the culverted crossing of an unnamed tributary Beaver Creek are necessary in order to allow access to the remainder of the property. The invertof the pipe will be buried so as to maintain a natural bed and allow for aquatic passage 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 January 15, 2002, 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 NCEEP 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 hqp://h2o.enr.state.ne.us/ncwetlands/strmgide.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. The proposed stream stabilization includes the installation of a series of J-hooks and cross vanes in order to stabilize the existing degraded channel. Planting of live stakes will occur along the banks. Please see the included plan sheets for additional details Page 6 of 9 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.ua, wM/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): N/A Amount of buffer mitigation requested (square feet): N/A Amount of Riparian wetland mitigation requested (acres): N/A Amount of Non-riparian wetland mitigation requested (acres): N/A Amount of Coastal wetland mitigation requested (acres): N/A IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ? No 2. 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 ? No ? 3. 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 (required by DWQ) 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 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No Page 7 of 9 2. If "yes", 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* Impact (square feet Multiplier Required Mitigation 1 N/A 3 (2 for Catawba) N/A 2 N/A 1.5 N/A Total N/A N/A * Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. XI. XII. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B.0242 or.0244, or.0260. N/A Stormwater (required by DWQ) Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. Impervious surface will be less than 20%. For details on sediment and erosion control measures. please refer to the enclosed Stream Restoration Plan. Sewage Disposal (required by DWQ) 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. Wastewater generated from the pump-around operations during the stream restoration/enhancement will be treated in a stilling basin before discharge to Beaver Creek. Details of this operation are included in the attached Stream Restoration Plan sheets. XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 211.0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ? No Page 8 of 9 If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: XV. 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). 7- Ae -o ,pplicant/Agent's Signat Date signature is valid only if a authorization letter from the applicant is provided.) Page 9 of 9 ` Soil & Environmental Consultants, PA 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com AGENT AUTHORIZATION FORM All Blanks To Be Filled In By The Current Landowner Name: 1?;Z? , Address: _(5- Z-' qO J-j Phone: Project Name/ Description: CV? - Q l j: ? &Mrjl" Date: e?7-Z9o The Department of the Army U.S. Army Corps of Engineers, Wilmington District P.O. Box 1890 Wilmington, NC 28402 Attn: ANpP-EA wAr,6 Field Office: TA/-EI&H Re: Wetlands Related Consulting and Permitting To Whom It May Concern: I, the current ro er owner, hereby designate and authorize Soil & Environmental Consultants, PA to act in my behalf as my agent in the processing of permit applications, to furnish upon request supplemental informati n in support of applications, etc. from this day forward. The 294%-?day of This notification supersedes any previous correspondence concerning the agent for this project. NOTICE: This authorization, for liability and professional courtesy reasons, is valid only for government officials to enter the property when accompanied by S&EC staff. You should call S&EC to arrange a site meeting prior to visiting the site. Print Property Owner's Name Property Owner's Signature cc: Ms. Cyndi Karoly NCDENR - DWQ 2321 Crabtree Boulevard Raleigh, NC 27604 cc: Mr. Kevin C. Martin Soil & Environmental Consultants, PA N Project 9: Scale: 9296.D1 1":2000' Project Date: Mgr.: PS 05.11-05 Figure 1- USGS Summerfield Quad Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com Wildflower Subdivision Guilford County, NC N Project #: Scale: 9296.D1 1":1667' Mgr.: PS 1 05.11-05 Figure 2 - Guildford County Soil Survey Sheet 13 Wildflower Subdivision Guilford County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com 11/24/2004 6:31 AM FROM: (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 002 OF 004 ?01 . WATFRQ %Iichael F. Gaslev.Uocernor ?0 (i William G. Ross Jr, Scctrwr\ Ctua7 r North Carolina Depaamcnt uC Em irontnent and Natural Re:ourcc, '-f - C Alan W. !Quick. P.F. Director - Dleial01101 Water Quality November 18, 2004 CERTIFIED MAIL: 7003 3110 0003 6489 8001 Return Receipt Requested Mr. Robert Connell 6380 Gumwood Road Oak Rid(1,c, NC 27310 SUBJECT: NOTICE OF VIOLATION and RECOMMENDATION for ENFORCEMENT ACTION Failure to Secure a 401 Water Quality Certification Stream Standard Violation 6380 Gumwood Road Guilford County Dear Mr. Connell: On November 3, 2004, Mr. Daryl Lamb from the Winston-Salem Regional Office of the Department of Environment and Natural Resources, Division of Water Quality, conducted a site inspection of the subject property. Observations indicated that approximately 975 linear feet an unnamed tributary to Beaver Creek, Cape Fear River Basin, Class WS-III, NSW waters, had been impacted by the excavation of the stream banks, excavation of the streambed substrate (stream floor), removal of the riffle-pools, and grading of the riparian area. During the site visit Mr. Lamb took measurements and made observations of the stream impacts. As a result of these observations, the Winston-Salem Regional Office conducted a file review. Accordingly, the following violations were confirmed as a result of this review and the site inspection: 1) failure to obtain a Section 401 Water Quality Certification, and 2) preclusion of best usage. Violation 1. Failure to Obtain a Section 401 Water Quality. Certification The Winston-Salem Regional Office confirmed that approximately 975 linear feet of stream channel and banks had been impacted by excavation prior to the proper securing of a Section 404 Nationwide Permit from the U. S. Army Corps of Engineers. A file review indicates that the U.S. Army Corps of Engineers (COE) has not authorized use of a Nation Wide Permit for these activities nor has notification been provided by the Corps of Engineers for these activities. Accordingly, the review confirmed that no Pre-construction Notification has been received by the Division of Water Quality for this project, and no Section 401 Water Quality Certification has been issued, nor are these activities covered by a General Section 401 Water Quality Certification. A Section 401 Water NoiihCaroiina Aatctrally North Carolina Dk i.ion of \%'atcr Q;;ality Wetlands C'ertitieation C,nit 1650 Mad Sen ice Cutter Raleigh, NC 27699-1650 I'hone (919) 733-1786 FAX {919) _ _-2?9G 2 321 Crabtree Bh d. Raleigh, \C 27004-2260 Intemet http/1h2o.enr.state.nc us/nmetlands Uumo ner krcice \ unttxr: 1-977-623-6748 An Equal OpportuniyMirmative Action Employer- 50% Recycled; l0% Post Consumer Paper 11/24/2004 6:31 AM FROM: (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 003 OF 004 -Mr. Robert Connell Page 2 November 18, 2004 Quality Certification is required for the above-mentioned impacts pursuant to 15A NCAC 2H .0500. Violation 2. Preclusion of Best Usase A DWQ site visit and file review confirmed that approximately 975 linear feet of stream impacts occurred to an unnarned tributary to Beaver Creek. Specifically, the impacts include the excavation of the stream hank, excavation of the streambed substrate (stream floor), removal of the riffle-pools, and the grading of the riparian area. These impacts to waters represent a removal of best usage, which is a stream standard violation. Specifically, 15A NCAC 213.0211 (2) states that the preclusion of best usage, which includes aquatic life propagation and maintenance of biological integrity, wildlife, secondary recreation, and agriculture, represents a water quality standard violation. Required Response and Corrective Action The Division of Water Quality requires that the violations detailed above be abated immediately. These violations, and any future violations, are subject to a civil penalty assessment of up to S25,000 per day for each violation. The Division of Water Quality requests that you respond in writing within 20 days of receiving this Notice. Please submit your written response to Daryl Lamb, Division of Water Quality, Winston-Salem Regional Office, 585 Waughtown Street, Winston-Salem, NC 27107. Your response should address the following items: 1. Please provide a map that details the location and number of feet of stream channel impact. This map should clearly indicate the position of the impacted stream channel relative to adjacent property lines, nearby buildings, roadways, culverts, ponds, sediment retention basins, and any other significant structures immediately above and below the impacted reach. 2. Please explain why you did not secure authorization from the U. S. Arrny Corps of Engineers (404 Permit) and the Division of Water Quality, N. C. Department of Environment and Natural Resources, (401 Water Quality Certification) for this activity. 3. You must restore the impacted stream section and adjoining riparian area. You must submit a stream restoration plan to the Division of Water Quality. Copies of this plan should be sent to Danny Smith, Division of Water Quality, Wetlands and Stormwater Branch, Compliance and Assistance Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 and to Daryl Lamb, Division of Water Quality, Winston-Salem Regional Office, 585 Waughtown Street, Winston- Salem, NC 27107. In addition, you should contact the U. S. Army Corps of Engineers at (919) 876-8441 and the Division of Land Resources, N. C. Department of Environment and Natural Resources, Winston-Salem Regional Office, at (336) 771-4600 to ensure that your restoration plans are in compliance with the requirements of Section 404 of the Clean Water Act and the requirements of the Division of Land Resources. This restoration plan must include your proposal for the physical restoration of the stream to the original dimensions, pattern and profile that existed before the dredging of the stream. This plan must also include the measures that will be used to establish a stable stream channel, stream banks, and adjacent riparian zone. The plan should include the following: a) a reference stream with a description of its profile, pattern and dimensions and a detailed 11/24/2004 6:31 AM FROM: (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 004 OF 004 Mr. Robert Connell Page 3 November 18, 2004 description of the methods, materials, and structures necessary to install such a stream. You arc encouraged to secure an environmental consultant to assist you with the plan's development, and the securing of required permits, certifications and authorizations necessary to implement the plan. b) a riparian zone restoration plan. The stream banks and the riparian zone must be stabilised and planted with woody vegetation. You should also specifically address tite location of the riparian area to be restored and how you can insure that future impacts to stream and the riparian zone will not occur. A planting plan must be developed and implemented in order to ensure that at least two native tree species are planted at a density sufficient to provide 320 trees per acre at maturity. This density is usually achieved by planting approximately 436 trees/acre on a 10 x 10 ft. grid or 681 trees/acre on an 8 x 8 ft. grid. Please see the attached Guiclelines.for Riparian Buffer Restoration (January 2001) for assistance in developing your plan. This plan must include the types of native woody vegetation selected, methodology of planting, and a site map indicating the location of the replanting efforts. 4. In order to stabilize the strearnside areas in the interim, please immediately install temporary ground cover along the stream banks. This ground cover should be suitable for the current soil conditions and time of year. We ask that you give your immediate attention to this matter and that your response address all of the items listed above. Please be advised that this Office is considering sending a recommendation for enforcement action to the Director of the Division of Water Quality regarding these issues. Your response to this correspondence will be considered in this process. If you have questions concerning this matter, or if this Office can be of assistance, please contact Daryl Lamb at (336) 771-4600, extension 293, or Danny Smith at (919) 733-5083, extension 353. Sincerely, Steve W. Tedder Regional Supervisor Division of Water Quality SWT/cdl cc: Ms. Andrea Wade, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office DWQ, Winston-Salem Regional Office Central Files Wetlands/401 Unit File Copy Mr. Earl Davis, Soil Erosion Control Section, Guilford County Planning & Development Department, P. O. Box 3427, Greensboro, SIC 27402 TECHNICAL SPECIFICATIONS FOR CONNELL PROPERTY STREAM RESTO GUILFORD COUNTY, NORTH CAROLINA S&EC Project No. 9296.D1 JULY 2005 PRELIMINARY NOT FOR CONSTRUCTION Patrick K. Smith, P.E. NC License No. 25525 Soil & Environmental Cons 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 84 www.SandEC.com tants, PA • Fax: (919) 846-9467 TECHNICAL SPECIFICATIONS TABLE OF CONTENTS TITLE PAGE i SECTION 4 - SITE PREPARATION 4 TABLE OF CONTENTS ii 4.1 SECTION INCLUDES 4 1.1 SECTION INCLUDES 1 4.2 MEASUREMENT AND PAYMENT 4 1.2 SUMMARY OF WORK 1 4.3 UTILITY LOCATION AND PROTECTION 4 1.3 WORKFORCE EXPERIENCE 1 4.4 SEDIMENTATION AND EROSION CONTROL 4 1.4 SPECIFIC EQUIPMENT REQUIREMENTS 1 4.5 CONSTRUCTION LAYOUT 4 ' 1.5 MEASUREMENT AND PAYMENT 1 4.6 CLEARING, GRUBBING, AND STRIPPING 4 SECTION 2 - TEMPORARY FACILITIES l 4.7 DEWATERING 4 ' 2.1 SECTION INCLUDES 1 SECTION 5 - EXCAVATION 5 2.2 MEASUREMENT AND PAYMENT 1 5.1 SECTION INCLUDES 5 2.3 TEMPORARY SANITARY FACILITIES I 5.2 MEASUREMENT AND PAYMENT 5 2.4 BARRIERS 1 5.3 REFERENCES 5 2.5 TRAFFIC CONTROL 1 5.4 PREPARATION 5 2.6 STAGING AREA 1 5.5 EXCAVATING 5 ' 2.7 COORDINATION WITH OWNER AND OTHER 5.6 PLANTING PREPARATION 5 CONTRACTORS 2 5.7 TOLERANCES 5 ' 2.8 PROTECTION OF EXISTING FACILITIES, SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6 STRUCTURES, AND SERVICES 2 6.1 SECTION INCLUDES 6 2.9 PROTECTION OF INSTALLED WORK 2 6.2 MEASUREMENT AND PAYMENT 6 2.10 PROGRESS CLEANING AND WASTE 6.3 REFERENCES 6 ' REMOVAL 2 6.4 FILL MATERIALS 6 2.11 EROSION CONTROL 2 6.5 PREPARATION 6 2.12 FINAL CLEANING 2 6.6 BACKFILLING, FILLING, AND SURFACE ' SECTION 3 - QUALITY CONTROL 3 PREPARATION 6 3.1 SECTION INCLUDES 3 6.7 COMPACTION AND QUALITY CONTROL 7 ' 3.2 MEASUREMENT AND PAYMENT 3 6.8 PROTECTION OF FINISHED WORK 7 3.3 REFERENCES 3 6.9 TOLERANCES 7 3.4 CONSTRUCTION OBSERVATION 3 SkTION 7 - CHANNEL PROTECTIVE LININGS AND IN- 3.5 PLANTING OBSERVATION 3 STREAM STRUCTURES 7 ' 3.6 SOIL TESTING 3 7.1 SECTION INCLUDES 7 3.7 NOTICE REQUIRED FOR TESTING 3 7.2 MEASUREMENT AND PAYMENT 7 ' SECTION 4 - S ITE PREPARATION 4 7.3 REFERENCES 7 11 7.4 GENERAL 7 7.5 MATERIALS 7 ' 7.6 IN-STREAM STRUCTURES 8 7.7 CHANNEL PROTECTIVE LININGS 9 7.8 SLOPE PROTECTION 9 SECTION 8 - STREAM BANK PLANTING 10 8.1 SECTION INCLUDES 10 8.2 MEASUREMENT AND PAYMENT 10 ' 8.3 REFERENCES 10 8.4 GENERAL 10 ' 8.5 PLANT STAKES AND CUTTINGS 10 ' 8.6 PLANT SUBSTITUTION 10 8.7 PLANTING PREPARATION 10 ' 8.8 STREAM BANK PLANTING 10 8.9 PLANTING PERIODS 10 8.10 REMOVAL OF NUISANCE VEGETATION 10 8.11 WATER FOR PLANTINGS 10 ' 8.12 SUBMITTALS 11 SECTION 9 - BUFFER PLANTING 11 ' 9.1 SECTION INCLUDES 11 9.2 MEASUREMENT AND PAYMENT 11 ' 9.3 REFERENCES 11 9.4 GENERAL 11 ' 9.5 CONTAINER GROWN PLANTS 12 9.6 BARE ROOT PLANTS 12 9.7 PLANT STAKES AND CUTTINGS 12 9.8 PLANT SUBSTITUTION 12 ' 9.9 PLANTING PREPARATION 12 9.10 PLANTING PERIODS 9.11 REMOVAL OF NUISANCE VEGETATION 9.12 WATER FOR PLANTINGS 9.13 SUBMITTALS SECTION 10 -PERMANENT SEEDING 10.1 SECTION INCLUDES 10.2 MEASUREMENT AND PAYMENT 10.3 REFERENCES 10.4 GENERAL 10.5 SEEDBED PREPARATION 10.6 SEEDING 10.7 SEEDING DATES 10.8 SOIL AMENDMENTS 10.9 MULCH SECTION I I - SEDIMENT & EROSION CONTROL 11.1 SECTION INCLUDES 11.2 MEASUREMENT AND PAYMENT 11.3 REFERENCES 11.4 MATERIALS 11.5 SILT FENCE 11.6 PUMP AROUND OPERATIONS 11.7 SPECIAL STILLING BASINS 11.8 TEMPORARY SEEDING ' SECTION 12 - SITE MAINTENANCE ' 12.1 SECTION INCLUDES 12.2 MEASUREMENT AND PAYMENT 12.3 EXECUTION i 111 12 12 12 12 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 15 16 16 16 16 SECTION 1 - GENERAL REQUIREMENTS 1.1 SECTION INCLUDES General requirements and information related to the work including, summary of work, measurement and payment, and reference to SPECIAL CONTRACT PROVISIONS. 1.2 SUMMARY OF WORK The CONNELL STREAM RESTORATION project consists of the earthwork construction of a restored channel, floodplain grading, and planting of the restored channel banks and surrounding buffer area. Refer to the Construction Drawings and to these Specifications for project details. The stream restoration is just one of a multipart construction plan associated with the development of the larger tract. 1.3 WORKFORCE EXPERIENCE The contractor is required to have the appropriately experienced personnel on site to operate equipment and insure that the construction sequence and installation procedures are followed as determined by the Engineer. Contractor personnel should be familiar with stream restoration techniques and the correct method of installing in-stream structures (i.e. rock and log j-hooks and cross vanes). 1.4 SPECIFIC EQUIPMENT REQUIREMENTS The Contractor is required to have at a minimum two excavators with hydraulic thumbs during the entire course of construction unless otherwise approved by the Engineer. The hydraulic excavators must be of sufficient size to lift, manipulate, and install boulders larger than 5- foot by 4-foot by 3-foot (a maximum of 6 tons). 1.5 MEASUREMENT AND PAYMENT All measurement and payment for services performed shall be as indicated in the SPECIAL CONTRACT PROVISIONS. As such, they are not defined in these technical Specifications. END OF SECTION SECTION 2 - TEMPORARY FACILITIES 2.1 SECTION INCLUDES Required temporary facilities including site access, temporary sanitary facilities, barriers, traffic control, construction staging area, Contractor coordination, protection of existing facilities and installed work, erosion control measures, and general site cleaning. 2.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 2.3 TEMPORARY SANITARY FACILITIES Provide and maintain required sanitary facilities and enclosures. No permanent sanitary facilities exist at the project site. 2.4 BARRIERS Provide barriers to prevent unauthorized entry to construction areas, to allow for Owner and Engineer access to site, and to protect existing structures and adjacent properties from damage due to construction operations. 2.5 TRAFFIC CONTROL Provide traffic control as required to protect the public safety. Conform to all requirements of State, County, City, or local laws and requirements for traffic control. Conformance with contract documents does not relieve the Contractor from responsibility for public safety. Construction operations may be underway on adjoining portions of the site. 2.6 STAGING AREA The Owner will designate an area for staging of Contractor's equipment and construction materials for the duration of construction. This area shall be maintained so as to provide a sightly appearance and a safe working environment. No other area shall be used for this purpose without the approval of the Owner. Storage of oil or fuel shall be confined to the construction staging area. Refueling of all vehicles and equipment shall occur only in the staging area. Refueling of non-mobile equipment located outside of the staging area will be allowed with Owner approval. No refueling shall occur within fifty feet of the restored channel, Beaver Creek, or any other surface water or wetland. The Contractor shall take appropriate measures to ensure safe fueling procedures are followed. Contractor shall provide appropriate spill prevention measures. The Contractor shall provide a spill containment plan for both the staging area and the construction area. The plan shall include prevention, containment, and control of fuel or' oil spillage from equipment storage, refueling, maintenance, and operation on site. The plan shall address both mobile and non-mobile equipment used during construction. Emergency spill cleanup equipment for oil and fuel spills shall be stored on site. The Contractor shall notify the Owner and all applicable agencies within 24 hours of any spill. S&EC Project No. 9296.13 1 Page 1 Technical Specifications Connell Property Stream Restoration July 2005 2.7 COORDINATION WITH OWNER AND OTHER CONTRACTORS As this project is just one portion of the overall site work, close coordination with the Owner, Site Engineer, and other Contractors will be necessary. Perform coordination with Owner and schedule work to ensure limited disruption of daily operations at adjoining construction sites, and any other contractors on-site. Obtain approval from Owner prior to the disruption of any access to site utilities, structures, or locations. Coordinate the disruption of any utility services without regard to duration. Provide continuous representation/point of contact for Owner during all site activities. Coordinate for access to construction site to reduce the potential for disruption and lack of productivity of other contractors on adjoining sites and other contractors on-site. Access to construction site shall be limited to the entrance designated on the plans. Only access points approved by the Owner shall be used during construction. 2.8 PROTECTION OF EXISTING FACILITIES, STRUCTURES, AND SERVICES ' The project vicinity to include existing access routes will continue to be used for daily operations by Owner and other contractors throughout the duration of construction. The Contractor shall protect existing facilities, structures, and services throughout the duration of construction and provide special protection where specified in individual specification sections. Provide temporary and removable protection for.existing structures and services. ' Control activity in immediate vicinity of facilities, structures, and services to prevent damage. Any facility, structure, or services disturbed or damaged, either intentionally or unintentionally, shall be ' removed and reinstalled or repaired to the Owner's satisfaction. Repairs to or replacement of facilities, structures, or services shall be performed at the expense of the Contractor. Repairs and/or ' replacement shall occur without additional cost to the Owner. 2.9 PROTECTION OF INSTALLED WORK ' Protect installed work and provide special protection where specified in individual specification sections. Provide temporary and removable protection for installed work and products. Control activity in immediate work area to prevent damage. Any installed work disturbed ' or damaged, shall be removed and reinstalled or repaired to the Engineer's satisfaction. Repairs to or replacement of installed work shall be performed at the expense of the Contractor. Repairs and replacement shall occur without additional cost to the Owner. ' 2.10 PROGRESS CLEANING AND WASTE REMOVAL Maintain areas free of waste materials, debris, and rubbish. Maintain site in a clean and orderly condition. Collect and remove waste materials, debris, and rubbish from site daily and dispose off site. Remove temporary utilities, equipment, facilities, and materials prior to Final Application for Payment inspection. Restore existing facilities used during construction to original condition. s 2.11 EROSION CONTROL Contractor shall be responsible for preventing erosion on the site and sedimentation off the site. Methods shall be employed as recommended in the North Carolina Erosion and Sediment Control Planning and Design Manual, latest edition. 2.12 FINAL CLEANING Execute final cleaning prior to final project assessment. Clean site and all installed work. Remove waste and surplus construction materials, rubbish, and construction facilities from the site. END OF SECTION S&EC Project No. 9296.D1 Page 2 Technical Specifications Connell Property Stream Restoration July 2005 SECTION 3 - QUALITY CONTROL 3.1 SECTION INCLUDES Observation of construction operations and buffer and stream bank planting. Independent testing laboratory soil testing and reporting 3.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS. Unless indicated otherwise, the Owner will arrange and pay for initial planting observation for quality assurance. Re-observation testing required because of non-conformance to plans or Specifications shall be charged against any money owed to Contractor. Contractor is encouraged to perform quality control checks and testing at Contractor's expense to reduce the possibility of rejected work. 3.3 REFERENCES For products or workmanship specified by association, trade, or other consensus, comply with requirements of the standard, except when more rigid requirements are specified or are required by applicable codes. Conform to reference standard by date of issue on date of Contract Documents, except where a specific date is established by code. Section 6 (Filling, Backfilling, and Compaction) of these Specifications. Section 8 (Stream Bank Planting) of these Specifications. Section 9 (Wetland and Buffer Planting) of these Specifications. 3.4 CONSTRUCTION OBSERVATION The Owner has engaged the Engineer to observe construction operations as required in these Specifications. Reports (either verbal or written) shall be submitted concurrently to the Engineer, Owner, and Contractor, indicating observations indicating compliance or non-compliance with Contract Documents. Observation of construction operations does not relieve Contractor of obligation to perform work to contract requirements. The Contractor shall allow observation personnel access to materials, and the construction site as required. 3.5 PLANTING OBSERVATION The Owner has engaged the Engineer to observe stream bank and buffer planting as required in these Specifications. Reports will be submitted concurrently to the Engineer, Owner, and Contractor, indicating observations and indicating compliance or non-compliance with Contract Documents. Observation of planting operations does not relieve Contractor of obligation to perform work to contract requirements. The Contractor shall allow observation personnel access to materials (see stream bank plantings specified in Section 8), and the construction site as required. 3.6 SOIL TESTING The Owner will arrange and pay for independent soil laboratory testing as required in these Specifications.' Reports will be submitted concurrently to the Engineer, Owner, and Contractor, indicating observations and results of tests and indicating compliance or non-compliance with Contract Documents. Testing or inspecting does not relieve Contractor of obligation to perform Work to contract requirements. The Contractor shall allow testing personnel access to materials and the construction site as required. 3.7 NOTICE REQUIRED FOR TESTING Contractor shall provide Owner at least 24 hours notice for any work requiring planting observation and/or soil testing. END OF SECTION S&EC Project No. 9296.DI Page 3 Technical Specifications Connell Property Stream Restoration July 2005 SECTION 4 - SITE PREPARATION 4.1 SECTION INCLUDES Site preparation shall consist of utility location and protection, clearing, grubbing and stripping of the work area, and construction of any required temporary construction access routes and temporary sediment and erosion control measures. 4.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 4.3 UTILITY LOCATION AND PROTECTION The Contractor shall locate all existing utilities and mark for identification. Contractor shall provide means for protecting utilities from any damage during site work. Repair of damaged utilities shall be at Contractor's expense. Coordination should be made with Owner to locate and mark site specific utilities. NC ONE CALL (1-800-632- 4949) 4.4 SEDIMENTATION AND EROSION CONTROL Contractor shall be responsible for preventing erosion on the site and sedimentation off the site. Methods shall be employed as recommended in the North Carolina Erosion and Sediment Control Planning and Design Manual, latest edition. The Contractor shall control sedimentation runoff with methods approved by the Engineer during the course of construction of this Project. Due to the magnitude of the clearing and grubbing associated with the overall development project, an Erosion Control Plan will be required. We have assumed that the grading associated with the stream restoration portion of this project will be covered under the Approved Erosion and Sediment Control Plan for the site development. Temporary erosion and sediment control measures shall be installed as described in Section 11 (Sediment & Erosion Control). The Contractor shall conform to all the rules, regulations, laws, and ordinances of the State of North Carolina, and of all other authorities having jurisdiction. 4.5 CONSTRUCTION LAYOUT The layout survey will be performed by Soil & Environmental Consultants, PA (S&EC) or its subcontractors. The construction layout will include but will not necessarily be limited to: channel alignment, earthwork limits, and appropriate grading values. The Contractor is not responsible for the construction surveying, layout, or as-built; however, the maintenance and preservation of the construction stakes is the responsibility of the Contractor. Damage to layout stakes due to contractor negligence as determined by the Engineer will be the Contractor's responsibility, and payment equivalent to the time and materials required to re-stake the project by S&EC or its subcontractors will be required. Layout staking will be coordinated with the project phasing in order to reduce/eliminate potential damage. The Contractor is required to have a laser level or other equivalent equipment available on site during the entire period of construction. 4.6 CLEARING, GRUBBING, AND STRIPPING the site. Debris may not be stockpiled on site. Clear areas required for access to site and execution of work. Remove trees, stumps, other wood, metal, or rubble debris within work areas. Remove stumps, main root ball, and all roots with a diameter greater than 2 inches. Leave area in a clean and neat condition. Grade site surface daily to control the direction of channelized flow and prevent free standing surface water. In areas where stream restoration will be implemented, the existing top six inches of soil should be removed and stockpiled prior to excavation, construction, or reconstruction efforts. 4.7 DEWATERING Comply with all rules, regulations, laws, and ordinances of the State of North Carolina, and of all other authorities having jurisdiction. Provide without additional cost to the Owner all labor, materials, equipment, and services necessaryjto make the work comply with such requirements. Install all barriers, erosion and sedimentation control, silt fences, turbidity curtains, and other measures as required to prevent off-site sedimentation. Grade and ditch the site or provide, sumps and pumps as necessary to direct surface runoff away from open excavations and subgrade surfaces. Provide and maintain temporary trenches, drain pipes, sumps, and other equipment to keep all excavations dry. Collect and remove all groundwater seepage, surface runoff, and wastewater from construction activities. All water pumped or drained from the Work shall be disposed of in a manner that will not result in undue interference with other work or damage to adjacent properties, other surfaces, structures, and utilities. Suitable temporary pipes, flumes, or channels shall be provided for water that may flow along or across the site of the Work. All water due to the dewatering operation shall be legally disposed of in accordance with all applicable state and federal regulations and other applicable regulations. Under no circumstances shall fill be placed in excavations containing standing water without approval of the Engineer. END OF SECTION ' Conform to applicable code for environmental requirements, disposal of debris, and erosion and sedimentation control as described above. Coordinate clearing work with utility owners and operators as described above. Establish a schedule for daily removal of debris from ' S&EC Project No. 9296.D1 Page 4 Technical Specifications Connell Stream Restoration July 2005 SECTION 5 - EXCAVATION 5.1 SECTION INCLUDES Provide all necessary equipment and labor to excavate for channel restoration without damage or interruption of utility service. 5.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 5.3 REFERENCES Occupational Safety and Health Administration - Construction ' Standards for Excavations, 29 CFR Part 1926.650-.652. When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall ' apply. 5.4 PREPARATION ' Locate, identify, and protect utilities from damage as described in Section 4.3. Notify utility companies and coordinate for and/or install protection of utilities. 5.5 EXCAVATING Protect all utilities and structures that may be damaged by excavating work. In areas where stream and floodplain grading will be implemented, the existing top six inches of soil should be removed and stored prior to construction or reconstruction efforts. ' Excavate subsoil to accommodate restored channel cross-sections, and other site work as shown on the Drawings. Perform Work in accordance with Occupational Safety and Health Administration (OSHA) - Construction Standards for Excavations, 29 CFR Part 1926.650-.652. Provide trench and excavation protection as required. Slope banks with machine to stable slope or flatter until shored. Grade top perimeter of excavation to prevent surface water from draining into excavation. Where required to protect utilities, perform excavation by hand. Remove cemented subsoil, boulders, and rock. Cemented subsoil, boulders, and rock shall be defined as materials which can not be readily broken down to less than 1/4 cu. yd. solid volume by concentrated effort of a track-mounted excavator, equivalent to a Caterpillar 225, equipped with rock teeth. Notify Engineer if subsurface conditions require excavation of larger cemented subsoil, boulders, and rock, and discontinue Work in affected area until notified to resume work. If cemented subsoil, boulders, or rock greater than %2 ' cu. yd. solid volume is encountered above required excavation, Engineer may direct adjustment in construction elevations. Adjustment of elevations shall not be a basis for additional payment. Correct areas over excavated in accordance with Section 6 (Filling, Backfilling, and Compaction). Stockpile select excavated material on- site for re-use in backfill. Stockpile location shall be subject to Owner approval. 5.6 PLANTING PREPARATION In areas where buffer planting will be implemented, the stockpiled topsoil should be redistributed in preparation for restoration planting operations as described in SECTION 7 (Channel Protective Linings and In-stream Structures) of these Specifications. All areas where topsoil is distributed shall be disked or harrowed to ensure soil aeration and to increase the surface roughness prior to planting. 5.7 TOLERANCES Top surface of channel protective lining (where applicable): Plus or minus one inch from required elevations. Top surface of fill, backfill, and topsoil: Plus or minus one inch from required elevations. END OF SECTION S&EC Project No. 9296.1) 1 Connell Stream Restoration Page 5 Technical Specifications , July 2005 SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6.1 SECTION INCLUDES Provide all necessary equipment and labor to perform filling, backfilling, and compaction necessary for construction of restored stream channel, and other site work as shown on the Drawings without damage or interruption of utility service. Replacement of removed topsoil shall be as described in SECTION 5.6 (Planting Preparation) of these Specifications. 6.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 6.3 REFERENCES ASTM D698 - Test Methods for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures, Using 5.5 lb. Rammer and 12-inch Drop. ASTM D1556 - Test Method for Density of Soil in Place by the Sand-Cone Method. ASTM D2922 - Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth). ASTM D3017 - Test Methods for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth). ASTM D2487 - Classification of Soils for Engineering Purposes. When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 6.4 FILL MATERIALS Soil excavated during construction and stockpiled may be re-used as fill provided that it can be conditioned and compacted as specified. Supplement or replace excavated soils with ordinary fill as needed to complete work. Ordinary fill shall be any soil classified as SM, SC, Ij 6.6 BACKFILLING, FILLING, AND SURFACE PREPARATION Backfill areas to contours and elevations with unfrozen materials. Do not backfill over porous, frozen, or spongy subgrade surfaces. Employ a placement method that does not disturb or damage other work. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. Make gradual grade changes. Blend slope into level areas. Place backfill and fill in loose level lifts not to exceed six inches in thickness before compaction. Make gradual grade changes. Blend slope into level areas. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. Earth fill in embankments, dams, levees, channel plugs, and other structures designed to restrain the movement of water shall be placed so as to meet the following additional requirements: a. The distribution of materials throughout each zone shall be essentially uniform and the fill shall be free from lenses, pockets, streaks, or layers of material differing substantially in texture or gradation from the surrounding materials. b. Backfill areas to contours and elevations with unfrozen materials. Do not backfill over porous, frozen, or spongy subgrade surfaces. Employ a placement method that does not disturb or damage other work. Place backfill and fill in loose level lifts not to exceed six inches in thickness before compaction. Make gradual grade changes. Blend slope into level areas. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. c. If the surface of any layer becomes too hard and smooth for proper bond with the succeeding layer, it shall be scarified parallel to the axis of the fill to a depth of not less than 2 inches before the next layer is placed. d. The top surfaces of embankments shall be maintained approximately level during construction, except that a crown or cross-slope of not less than 2% shall be maintained to insure effective drainage, and except as otherwise specified for drain fill zones. If the Drawings or Specifications require, or the Engineer directs, that fill be placed at a higher level in one part of an embankment than another, the top surface of each part shall be maintained as specified above. SP-SM, SP-SC, SC-SM, Sr, or SW under AS TM D2487. e. If soil excavated during cut operations is not re-used, it shall be removed from the site to an appropriate disposal facility at no additional charge to Owner. The Contractor shall be responsible for the payment of all fees associated with transportation and disposal of unusable materials. f. Suitable borrow material may be available within the vicinity of the project site but must be identified by a Geotechnical Engineer. The Contractor shall obtain results of a Standard Proctor test, Atterberg Limits test, and classification in accordance with ASTM D2487, and submit to the Engineer for approval. 6.5 PREPARATION Compact subgrade to density requirements for subsequent backfill materials. Cut out soft areas of subgrade not capable of compaction in place. Backfill with ordinary fill material and compact to density equal to or greater than requirements for subsequent fill material. S&EC Project No. 9296.D1 Page 6 Connell Stream Restoration Dams and other embankments shall be constructed in continuous layers from abutment to abutment except where openings to facilitate construction or to allow the passage of stream flow during construction are specifically authorized in the Contract. Embankments built at different levels as described under SECTION 6.6-d or -e above shall be constructed so that the slope of the bonding surfaces between embankment in place and embankment to be placed is not steeper than 2 feet horizontal to 1 foot vertical. In areas where existing embankment is to be flattened, topsoil shall be removed as described in SECTION 5.5 (Excavating). New embankment material shall be benched into existing slope as shown on the plans. Short bench levels shall be formed to a slope of 2H:1 V or flatter, based on existing slope conditions as determined by the Engineer at the time of construction. Benching shall be constructed in such a fashion as to inhibit the formation of preferential planes of slope failure. The bonding surface of the embankment in place shall be stripped of all loose material, and shall be scarified, moistened and recompacted when the new fill is placed against it as needed to insure a good bond with the new fill and to obtain the specified moisture content and density in the junction of the in-place and Technical Specifications July 2005 new fill. Any variation to this method of tying new fill into the existing embankment shall be determined in the field at time of construction by the Engineer. t Independent testing laboratory (SECTION 3 - Quality Control) shall monitor backfill and fill placement. In-place density tests shall be performed at least every two feet in elevation within the fill or backfill and within the top one foot of fill or backfill where the higher density requirement applies. If tests indicate backfill or fill material does not meet specified requirements, remove, replace, and retest backfill or fill 6.7 COMPACTION AND QUALITY CONTROL For backfilling of old stream channel, maintain moisture content of backfill and fill to within two percent of the optimum moisture content by ASTM D698 for the particular soil being placed. Compact to greater than or equal to 95 percent of the maximum dry density by ASTM D698 for the particular soil being placed. Lift thickness shall not exceed 6". For backfill around existing concrete structures (both precast and cast- in place), maintain moisture content of backfill and fill to within two percent of the optimum moisture content by ASTM D698 for the particular soil being placed. Compact to greater than or equal to 95 percent of the maximum dry density by ASTM D698 for the particular soil being placed. Lift thickness shall not exceed 6" and shall be placed uniformly around the entire outside edge of the structure so as not to create a non-uniform soil load condition. 6.8 PROTECTION OF FINISHED WORK Protect finished work. Reshape and re-compact fills subjected to vehicular traffic or damaged by erosion. 6.9 TOLERANCES Top surface of channel protection lining (where applicable): Plus or minus one inch from required elevations. Top surface of fill, backfill, and topsoil: Plus or minus one inch from required elevations. Top surface of floodplain (where applicable): Plus or minus one inch from required elevations. END OF SECTION SECTION 7 - CHANNEL PROTECTIVE LININGS AND IN- STREAM STRUCTURES 7.1 SECTION INCLUDES Temporary and permanent channel erosion protective linings and in- stream rock and log structures. 7.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 7.3 REFERENCES The following specifications and methods form a part of this specification: ASTM C88 - Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate ASTM C127 - Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate NCDOT - Standard Specifications for Roads and Structures. When the specifications or drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 7.4 GENERAL A Channel Protective Lining has been selected along channel banks. In-stream structures will be installed to create a more natural channel profile for use in the stream. Materials to be used in Channel Protective Linings and the in-stream structures are specified in this section. Channel erosion protection linings !shall be constructed of the materials specified in this section and as shown on the drawings. Linings shall be laid true to the grade shown on the drawings. Linings shall make a smooth interface with the surrounding grade. Any portion of the lining which has its grade or surface disturbed after placement shall be repaired. Any portion thereof already in place which is found to be defective or damaged shall be repaired or replaced, as directed by the Engineer, without additional cost to the Owner. The in-stream structures shall be constructed of the materials specified in this section and as shown on the drawings. Any portion of the structure which is disturbed after placement shall be repaired. Any portion of the structure found to be defective or damaged shall the repaired or replaced, and directed by the Engineer, without additional cost to the Owner. 7.5 MATERIALS Materials include excelsior and coir fiber matting manufactured x' especially for erosion control, wire staples, wooden construction stakes, nonwoven geotextile, logs, boulders, NCDOT Coarse Aggregate Size #57, NCDOT Class A Erosion Control Stone, NCDOT Class B Erosion Control Stone, NCDOT Class 1 Rip Rap (RipRap), and NCDOT Class 2 Rip Rap (RipRap). Matting for erosion control in areas, other than streambanks with mild slopes shall be excelsior matting. Excelsior matting shall consist of a ' S&EC Project No. 9296.D1 Page 7 Technical Specifications Connell Stream Restoration July 2005 t t t i machine produced mat of curled wood excelsior a minimum of 47 inches in width. The mat shall weigh 0.975 pounds per square yard with a tolerance of plus or minus 10 percent. At least 80 percent of the individual excelsior fibers shall be 6 inches or more in length. The excelsior fibers shall be evenly distributed over the entire area of the blanket. One side of the excelsior matting shall be covered with an extruded plastic mesh. The mesh size for the plastic shall be a maximum of 1" x 1" square. Matting for erosion control shall not be dyed, bleached, or otherwise treated in a manner that will result in toxicity to vegetation. Other acceptable material manufactured especially for erosion control may be used when approved by the Engineer in writing before being used. Erosion control matting for streambanks shall be CF 7 coir matting. Matting shall be 100% coir fiber. Minimum specifications for coir matting as follows: Weight 20.6 oz/yd' (700 g/m') ASTM-D3776 Thickness 6.34 mm Water Velocity 10 ft/s Grab/Elongation (Dry) 115.81bs/23.9% MD ASTM-134594 54. l ibs/33.5% XD Manning's n 0.0294 Max Shear Stress 4.46 lb/ft Wire staples shall be machine made of No. I I gage (0.091" diameter) new carbon steel wire formed into a "U" shape. The size when formed shall be 18" in length with a throat of not less than V in width. Wooden construction stakes shall be of hardwood, cut from sound solid trees and free from defects that would impair the strength of the stake. Stakes shall be a minimum of three feet long and a maximum of four feet long and shall contain no unsound knots. One end shall be cut to provide a point; the opposite end shall be cut square. Either round or square stakes may be used. Round stakes shall be straight and a minimum of two (2) inches in diameter. Square stakes may be used provided that the minimum dimension in either direction is one and one-half (1.5) inches. Stakes shall be cut with a''/]" deep notch 5" from the top of the stake. The stake shall not deviate more than one inch at any point from a straightedge held longitudinally along the piece. Nonwoven Geotextile: Geotextile shall be a nonwoven fabric with a minimum weight of 6 ounces per square yard (ASTM D3776), a minimum grab strength in either direction of 180 pounds (ASTM D4632), a minimum puncture resistance of (ASTM D4833) of 85 pounds, and permeability of (ASTM D4491) greater than 0.2 cm/sec. Fabric meeting these Specifications shall still be subject to approval or rejection by the Engineer. At the time of installation, the fabric will be rejected if it has defects, rips, holes, flaws, deterioration, or damage incurred during the manufacture, transportation, or storage. NCDOT Coarse Aggregate Size #57: Shall conform to gradation requirements of Table 1005-1, NCDOT Specifications. NCDOT Class A Erosion Control Stone: 2 to 6-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards (No more than 5% of the material furnished can be less than the minimum size specified, nor more than 10% of the material can exceed the maximum size specified). Concrete rubble shall not be used. NCDOT Class B Erosion Control Stone: 5 to 12-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards (No more than 5% of the material furnished can be less than the minimum size specified, nor more than 10% of the material can exceed the maximum size specified). Concrete rubble shall not be used. NCDOT Class I Rip Rap (RipRap): 5 to 17-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards. The stone shall vary in weight from 5 to 200 pounds with 30% weighing a minimum of 60 pounds each and 10% weighing a minimum of 15 pounds each. (No more than 5% of the material furnished can be less than the minimum size specified, nor can more than 10% of the material exceed the maximum size specified). The rock fragments shall be angular to subrounded in shape, Concrete rubble shall not be used. NCDOT Class 2 Rip Rap (RipRap): 9 to 23-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards. The stone shall vary in weight from 25 to 250 pounds and 60% shall weigh a minimum of 100 pounds each. (No more than 5% of the material furnished can be less than' the minimum size specified, nor can more than 10% of the material exceed the maximum size specified). The rock fragments shall be angular to subrounded in shape. Concrete rubble shall not be used. Boulders: Boulders of approximate dimension 4' x 3' x 2' shall be individually picked by contractor from the quarry or the on site stockpile for use in in-stream structure construction. Boulders as small as 3' x 2' x 2' may be used; however, they shall not constitute more than 30 % of the total boulders. Boulders shall be relatively flat on either side in the same dimension, preferably the long dimension and must have smooth ends. Logs: Logs shall be hardwood with entire root mass intact and attached to log. Branches shall be removed, and the log shall have a uniform diameter over its length. Vane logs shall be a minimum of 15 feet long with a diameter of 12 inches to 18 inches. Anchor logs shall be a minimum of 10 feet long with a diameter of 12 inches to 18 inches. 7.6 IN-STREAM STRUCTURES. The work covered by this section consists of the construction of in- stream structures including rock cross vanes (with or without rock steps) and rock or log j-hooks (with or without rock steps). The quantity of in-stream structures to be constructed will be affected by actual conditions that occur during the construction of the project. The type and quantity of structures may be increased or decreased at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change of character of the work. A tracked hydraulic excavator withla thumb of sufficient size to move specified boulders is required for this item. Precise placement of structures will be determined during construction by the Engineer and may not reflect the construction drawings. In-stream structures installed must be inspected and approved by the Engineer. Excavation for the purpose of installing structures is incidental and is covered by this line item. The excavation of the subgrade and installation of the structure will be consecutive and continuous. Once the installation procedure has initiated it will be completed before the end of the workday. Any incidental/accidental discharge of sediment accumulation as a result of the installation procedure will be removed or integrated into the S&EC Project No. 9296.D1 Connell Stream Restoration Page 8 Technical Specifications July 2005 designed bedform. Excavation shall terminate at bedrock if contacted prior to the design grade. Bedrock will be excavated only if it is determined to be rippable and necessary by the Engineer. Grade area where structures are to be constructed. Surface shall be free of obstructions, debris, and pockets of soft or low density material. Unless otherwise directed by the Engineer, the stone shall be placed on the slope and/or angle as indicated on the plans. The stone shall be graded so that the smaller stones are uniformly distributed throughout the mass. The Contractor may place the stone by mechanical methods, augmented by hand placing where necessary, provided that when the rip rap is completed, it forms a properly graded, dense, neat layer of stone. The completed rip rap shall be at least the thickness indicated on the plans. Drop height shall be not more than one foot. Place rock cross vanes and j-hooks (and rock sections of log j-hook) as shown in Drawings. Footer rocks shall be installed to define shape of in-stream rock structures, and the arms of in-stream log j-hooks. Footer rocks shall be installed such that their long dimension is oriented in the direction of flow. No gaps shall be left between footer rocks. Minimum footer rock depth below the proposed ground surface of the stream bed shall be 4 feet. Rock sills shall extend a minimum of 3 feet beyond bankfull (perpendicular to stream flow) as indicated on plans. Geotextile shall be placed over structures and backfilled with aggregate as shown on plans. Log vanes shall be placed on top of footer rocks along an anchor log as shown on plans. The upstream end of the log shall be buried and pinned between a boulder and a footer rock. Geotextile shall be nailed to the upstream side of the log and backfilled with aggregate as shown on plans. The quantity of cross-vanes and j-hook vanes to be paid for will be determined by the actual number of structures installed during the construction process. Cross vanes and j-hook vanes will be paid for per individual installed, and includes the handling and transportation of logs and boulders, integration of nonwoven filter fabric, backfill of selected aggregate, and fine grading. The quantities of stone including the boulders utilized should not be priced under this item of work. 7.7 CHANNEL PROTECTIVE LININGS Grade area to be lined. Surface shall be free of obstructions, debris, and pockets of soft or low density material. The rock weir structures shall be completed prior to installation of the channel protective linings. Cover area with stockpiled topsoil to a depth of not less than 4 inches. Final grade with topsoil shall be as shown on drawings. Topsoil shall be prepared with fertilizer and lime, and seeded as described in Section 10 (Permanent Seeding) of these specifications. Install CF-7 erosion control matting perpendicular to the axis of the stream. The matting shall be laid smooth and free from tension, stress, folds, wrinkles or creases. Horizontal overlaps shall be a minimum of 12 inches with the upper matting overlapping the lower matting. Vertical overlaps in matting shall be a minimum of 12 inches with the upstream matting overlapping the downstream matting. trench and Eco-Stakes® shall be installed as shown on plans. Matting shall be anchored utilizing Eco-stakeO brand stakes installed not more than 3 feet apart (3' on centers) and staggered, with a minimum of 3 stakes per square yard of matting over the entire lined area. 24-inch Eco-Stakes® shall be used along the toe of the channel and 12-inch stakes shall be used within the field and top edge of the matting as detailed on the construction plans. Along all laps (both vertical and horizontal) in the matting, install a common row of staples at the seam, installing staples on 1 foots (12 inch) centers. Along the toe, 24 inch Eco-Stakes® shall be spaced not more than 2 feet All stakes shall be driven perpendicular to the axis of the stream as shown in plans. Care shall be taken to avoid damage to matting material. In the event that the matting is displaced or damaged during installation, the matting shall be repositioned or replaced. This will be done at no additional cost to the Owner. 7.8 SLOPE PROTECTION Grade area to be lined. Surface shall be free of obstructions, debris, and pockets of soft or low density material. Cover area with stockpiled topsoil'to a depth of not less than 4 inches. Final grade with topsoil shall be as shown on drawings. Topsoil shall be prepared with fertilizer and lime, and seeded as described in Section 10 (Permanent Seeding) of these specifications. Install excelsior matting perpendicular to slope. Matting shall be unrolled with netting material on top and blanket material in contact with the soil. (Note: some excelsior matting has netting on both sides.) The matting shall be laid smooth and free from tension, stress, folds, wrinkles or creases. Horizontal overlaps shall be a minimum of 12 inches with the upper matting overlapping the lower matting. Vertical overlaps in matting shall be a minimum of 12 inches. The top (crest) and bottom (toe) edges of the matting shall be anchored in trench at least 12 inches deep as'shown on plans to prevent undercutting of the matting. Matting trench and wire staples shall be constructed and installed as shown'; on plans. Wire staples shall be installed not more than 3 feet apart (3' on centers) and staggered, with a minimum of 3 stakes per square y4d of matting over the entire lined area. Staples shall be driven perpendicular to the soil surface. Staples shall be driven flush with soil surface to reduce potential for movement of the erosion control matting. Staples shall be installed in parallel rows on 3' centers and in trenches at the top and bottom of the slope as shown on drawings. Along all laps (both vertical and horizontal) in the matting, install a common row of staples at the seam, installing staples on Ifoot (12 inch) centers. All standard anchoring staples shall be 18 inches in length. Staples shall be driven in with a wooden mallet. Care shall be taken to avoid damage to matting material. In the event that the matting is displaced or damaged during installation, the matting shall be repositioned or replaced. This will be done at no additional cost to the Owner. END OF: SECTION The top (crest) edge of the matting shall be anchored in trench at least ` 12 inches deep as shown on plans to prevent undercutting of the matting. Trench should be located a minimum of 12 inches from the top of bank, and shall not alter channel or floodplain grade. Matting S&EC Project No. 9296.131 Page 9 Technical Specifications Connell Stream Restoration July 2005 SECTION 8 - STREAM BANK PLANTING I 8.1 SECTION INCLUDES Provide all necessary equipment and labor to implement planting plan. 8.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 8.3 REFERENCES The following specifications and methods form a part of this specification: NCDOT - Standard Specifications for Roads and Structures. 15 NCAC 2B.200 - Classification of Water Quality Standards Applicable to Surface Waters & Wetlands of North Carolina The Baily Hortorium (1976 MacMillan Publishing Co., Inc.) American Standard for Nursery Stock, latest edition NCDENR - Erosion and Sediment Control Planning and Design Manual When the specifications or drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 8.4 GENERAL All plants shall be as called for by these specifications. Live stakes shall be used for all plant species. Botanical names referred to in the plans are taken from "Hortus Third", the Baily Hortorium (1976 MacMillan Publishing Co., Inc.). All plants delivered shall be true to name. Each plant, or group of the same species, variety, and size of plant, shall be legibly tagged with the name and size of the plant. All plants shall be first-class representatives of their species. Stakes shall be reasonably straight. All plants shall be free from plant diseases and insect pests. All shipments of plants shall comply with all nursery inspection and plant quarantine regulations of the states of origin and destination, as well as with Federal regulations governing interstate movement of stock. If stock from other states is used, the stock shall be accompanied by a tag or certificate stating, in effect, that the stock has been inspected and certified by an authorized official of the state of origin as apparently free from injurious plant pests. All plants shall be subject to inspection at any time by the Engineer. Any such inspection before or during planting operations, however shall not be construed as final acceptance of the plants involved. 8.5 PLANT STAKES AND CUTTINGS Plant stakes and cuttings if approved for use by the Engineer shall consist of freshly cut live plants of select stock which has been developed by proper cultural treatment. Stakes and cuttings shall be 3/8" to 1/2" diameter and between 12 and 18 inches long. They shall be carefully cut from mother-stock plantings. Plant materials shall be packaged, transported, and handled in a manner that will prevent injury, drying out, or freezing. 8.6 PLANT SUBSTITUTION No change in the specified plants (species, variety, size, caliper, furnish, etc.) will be made without. written approval of the Engineer. All requests by the Contractor for substitutions shall be presented in writing and shall include a listing of the sources which have been contacted in an attempt to secure the specified plant material. Requests for substitutions shall include botanical name, common name, size, caliper, and furnish description of the proposed substitute. No increase in compensation will be made to the Contractor as a result of the use of the approved substitute plants. 8.7 PLANTING PREPARATION In areas where stream restoration will be implemented, preparation for restoration planting operations shall be as described in SECTION 7 (Channel Protective Linings) of these specifications. Where plant stakes and plant cuttings shall be planted through the Channel Protective Lining, holes shall be made by neatly punching a hole in the matting with a dibble bar, (a heavy metal tool with a blade and a foot petal). The dimensions of the hole shall not exceed 3" in any direction, taking care not to damage the surrounding matting. 8.8 STREAM BANK PLANTING Where plant stakes and plant cuttings shall be planted, they shall be installed at a 45 to 60 degree angle in the direction of stream flow. The buds of stakes and plant cuttings should point upward and about 2 inches of wood should be exposed above the ground surface. Tamp the surrounding soil firmly to eliminate air pockets. Where stream bank planting is directed, areas shall be planted with shrub using 3-foot by 3-foot centers as shown on construction drawings. Care should be taken to avoid planting stakes too deep or too shallow, and to avoid damage to stakes during planting. Planting depth should be in accordance with listed references and supplier recommendations. 8.9 PLANTING PERIODS The installation of plant stakes, cuttings, bare root, or container grown plants shall be performed in mid to late winter, between December 1 and March 1 (best planting period February 1 to March 1) to allow plants to stabilize during the dormant period and set root during the spring. After March 1, only bare root and container grown plants shall be used. 8.10 REMOVAL OF NUISANCE VEGETATION Removal or control of nuisance vegetation shall be performed for a period of 90 days as necessary to ensure adequate survival of specified plant species. See SPECIAL CONTRACT PROVISIONS. t. 8.11 WATER FOR PLANTINGS The Contractor shall install a rain gage and collect daily gage readings at the site. Contractor shall provide initial watering on the day of planting and thereafter at a minimum rate of 1 inch per week (including rainfall) for a period of 90 days. Water used in the planting or care of vegetation and plantings shall meet the requirements of Class C fresh S&EC Project No. 9296.D 1 Page 10 Technical Specifications Connell Stream Restoration July 2005 f waters as defined in 15 NAC 213.200. See SPECIAL CONTRACT PROVISIONS. 8.12 SUBMITTALS Contractor shall submit purchase certificates (or other proof) of all species planted. END OF SECTION SECTION 9 - BUFFER PLANTING 9.1 SECTION INCLUDES Provide all necessary equipment and labor to implement planting plan. 9.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 9.3 REFERENCES The Baily Hortorium (1976 MacMillan Publishing Co., Inc.) i American Standard for Nursery Stock, latest edition i NCDENR - Erosion and Sediment Control Planning and Design Manual 15 NCAC 2B.200 - Classification of Water Quality Standards Applicable to Surface Waters & Wetlands of North Carolina The following Specifications and methods form a part of this specification: NCDOT - Standard Specifications, for Roads and Structures. When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 9.4 GENERAL All plants shall be as called for by these Specifications. Bare rooted plants may be used in lieu of container grown plants provided written approval for such use has been obtained from the Engineer. Grading of plants, type and minimum dimensions of containers shall conform to the Specifications contained in the', latest edition of American Standard for Nursery Stock. Plants shall not be cut back from larger sizes to meet sizes called for on the plans. !Botanical names referred to in the plans are taken from "Hortus Third", the Baily Hortorium (1976 MacMillan Publishing Co., Inc.). All plants delivered shall be true to name. Each plant, or group of the same species, variety, and size of plant, shall be legibly tagged with the name and size of the plant. All plants shall be first-class representatives of their species. The root system shall be vigorous and well-developed. The branch systems shall be of normal development, and free from disfiguring knots, sun scald injuries, abrasions of the bark, dead or dry wood, broken terminal growth, or other objectionable disfigurements. Trees shall have reasonably straight stems, and shall be well branched and symmetrical in accordance with their natural habits of growth. All plants shall be free from plant diseases and insect pests. All shipments of plants shall comply with all nursery inspection and plant quarantine regulations of the states of origin and destination, as well as with Federal regulations governing' interstate movement of nursery stock. If nursery stock from other states is used, the stock shall be accompanied by a tag or certificate stating, in effect, that the nursery stock has been inspected and certified by an authorized official of the state of origin as apparently free from injurious plant pests. All plants shall be subject to inspection at any time by the Owner, Engineer, or a party to be named by the Owner. Any such inspection before or during planting operations, however shall not be construed as final acceptance of the plants involved. S&EC Project No. 9296.D1 Page 11 Technical Specifications Connell Stream Restoration July 2005 t 9.5 CONTAINER GROWN PLANTS Container grown plants shall be healthy, vigorous, well-rooted, and shall have become established in the container in which they are delivered. These plants shall have been in the established container long enough for the fibrous roots to have developed so that the root mass will retain its shape and hold together when removed from the container. The container shall be a 1 gallon container or larger, sufficiently rigid to firmly hold the soil protecting the root during transporting, handling, and planting, and the soil shall not be allowed to become frozen. 9.6 BARE ROOT PLANTS Bare root plants if approved for use by the Engineer shall have a heavy fibrous root system which has been developed by proper cultural treatment. They shall be dug, packaged, transported, and handled in a manner that will prevent injury to or drying out of the trunks, branches, or roots, or freezing of the roots. 9.7 PLANT STAKES AND CUTTINGS Plant stakes and cuttings if approved for use by the Engineer shall consist of freshly cut live plants of select stock which has been developed by proper cultural treatment. Stakes and cuttings shall be 3/8" to %z" diameter and between 12 and 18 inches long. They shall be carefully cut from mother-stock plantings. Plant materials shall be packaged, transported, and handled in a manner that will prevent injury, drying out, or freezing. 9.8 PLANT SUBSTITUTION No change in the specified plants (species, variety, size, caliper, furnish, etc.) will be made without written approval of the Engineer. All requests by the Contractor for substitutions shall be presented in writing and shall include a listing of the sources which have been contacted in an attempt to secure the specified plant material. Requests for substitutions shall include botanical name, common name, size, caliper, and furnish description of the proposed substitute. No increase in compensation will be made to the Contractor as a result of the use of the approved substitute plants. 9.9 PLANTING PREPARATION In areas where wetland and buffer planting will be implemented, preparation for planting operations shall be as described in SECTION 5.6 (Planting Preparation) of these Specifications. Where container grown plants will be planted, holes made in preparation for tree and shrub species planting shall be as shown on construction plans. Where bare root plants, plant stakes, and plant cuttings shall be planted in holes made by neatly punching a hole into existing grade with a dibble bar, (a heavy metal tool with a blade and a foot petal), the dimensions of the hole shall not exceed 3" in any direction. x. 9.10 PLANTING PERIODS The installation of plant stakes, cuttings, bare root, or container grown plants shall be performed in mid to late winter, between December 1 and March 1 (best planting period February 1 to March 1) to allow plants to stabilize during the dormant period and set root during the spring. After March 1, only bare root and container grown plants shall be used. 9.11 REMOVAL OF NUISANCE; VEGETATION Removal or control of nuisance vegetation shall be performed for a period of 90 days as necessary to ensure adequate survival of specified plant species. See SPECIAL CONTRACT PROVISIONS. 9.12 WATER FOR PLANTINGS The contractor shall install a rain gage and collect daily gage readings at the site. Contractor shall provide initial watering on the day of planting and thereafter at a minimum rate of 1" per week (including rainfall) for a period of 90 days. Water used in the planting or care of vegetation and plantings shall meet the requirements of Class C fresh waters as defined in 15 NAC 213.290. See SPECIAL CONTRACT PROVISIONS. 9.13 SUBMITTALS Contractor shall submit purchase certificates (or other proof) of all species planted. END OF, SECTION S&EC Project No. 9296.13 1 Page 12 Technical Specifications Connell Stream Restoration July 2005 SECTION 10 -PERMANENT SEEDING be used and erosion control matting shall be placed within 24 hours of seeding. Apply seeds and mulch at the rates indicated below. 10.1 SECTION INCLUDES Areas with Channel Protective Linings: Permanent seeding for permanent site stabilization. sj2eci es Rate (lbs/acre? 10.2 MEASUREMENT AND PAYMENT Reed Canary Grass 10 (Phalaris arundinacea) See SPECIAL CONTRACT PROVISIONS Switch Grass 10 (Panicum virgatum) 10.3 REFERENCES All other disturbed areas: ' The following specifications and methods form a part of this specification: S eD cies i Rate flbslacrg) Reed Canary Grass 25 NCDENR - Erosion and Sediment Control Planning and Design (Phalaris arundinacea) Manual Switch Grass 25 (Panicum virgatum) When the specifications or drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall Mulch Rate (Ibs/acre,) apply. Grain Straw 4000 (2 bales per 1000 square feet) 10.4 GENERAL or Wood Fiber Mulch 1500 Permanent seeding shall be executed in temporary lined areas and all other areas which are disturbed during construction activities. In areas 10.7 SEEDING DATES where Channel Protective Lining will be installed, seedbed preparation and seeding shall be performed prior to the placement of erosion Seeding dates given in these seeding specifications have the best control matting (See SECTION 7 - Channel Protective Linings). probability of success. Best Possib 10.5 SEEDBED PREPARATION Late winter 15 Feb-15 Mar 1 Dec-15 Mar Complete grading before topsoiling or preparing seedbeds. Avoid Seeding shall be completed within, the "possible" range of dates. creating steep slopes. Excess stockpiled topsoil not used in construction of Channel Protective Lining shall be redistributed across 10.8 SOIL AMENDMENTS areas to be seeded. Where topsoil is unavailable, seedbeds may be prepared directly on the exposed finished grade or topsoil may be Apply lime and fertilizer according to soil tests, or apply 2 tons/acre imported. (4,000 lb/acre) ground agricultural' limestone and 2,800 lb/acre 10-10- 10 fertilizer. If topsoil is used, it should be spread to a uniform depth of four to six inches and bonded to the subsoil by loosening with a disc, harrow, or 10.9 MULCH chisel plow. Areas where seeding will occur on exposed finished grade shall be disked or harrowed to ensure soil aeration and to increase the Apply grain straw, or equivalent cover of another suitable mulching surface roughness prior to planting. material as described above. Anchor mulch by roving or netting. Netting shall be used on slopes steeper than 2H:1 V. Apply lime and fertilizer evenly across seedbed and work into the top 4-6 inches of soil by discing or other suitable means. Operate END OF SECTION machinery on the contour. Rework the surface if soil becomes compacted or crusted prior to seeding. Complete seedbed preparation by breaking up large clods and raking into a smooth, uniform surface. Fill in or level depressions that can collect water. 10.6 SEEDING Apply permanent seeding to seedbed after preparation is complete. Use certified seed for permanent seeding whenever possible. Certified seed r ' is inspected by the North Carolina Crop Improvement Association. It meets published North Carolina Standards and should bear an official "Certified Seed" label. Broadcast seed into a freshly loosened seedbed that has not been settled by rainfall. Mulch must be used on slopes 4H:1 V or steeper and in areas when concentrated water may flow. Anchor mulch with netting in areas subject to concentrated flow. In areas where Channel Protective Lining will be installed, no mulch shall S&EC Project No. 9296.D1 Page 13 Technical Specifications Connell Stream Restoration July 2005 i SECTION II - SEDIMENT & EROSION CONTROL 11.1 SECTION INCLUDES Installation of temporary sediment and erosion control measures to include installation of silt fence and temporary seeding measures. The Contractor shall maintain these measures to ensure proper structure function and vigorous temporary vegetative cover during construction. 11.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 11.3 REFERENCES The following Specifications and methods form a part of this specification: ASTM D4355 - Standard Test Method for Deterioration of Geotextiles from Exposure to Ultraviolet Light and Water (Xenon-Arc Type Apparatus) ASTM D4632 - Standard Test Method for Grab Breaking Load and Elongation of Geotextiles ASTM D4751 - Standard Test Method for Determining Apparent Opening Size of a Geotextile NCDENR - Erosion and Sediment Control Planning and Design Manual When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 11.4 MATERIALS Silt Fence: Silt fence shall have steel posts, woven wire fabric, and filter fabric. The steel post shall have a minimum length of Y and minimum width of 1 3/4". The steel posts shall have projections for fastening the wire to the fence. The woven wire fabric shall be at lest 32 inches high, and shall have at least 6 horizontal wires. Vertical wires shall be spaced a maximum of 12 inches apart. The top and bottom wires shall be at least 10 gauge. All other wires shall be at least 12%2 gauge. The silt fence filter fabric shall meet the following minimum criteria: Grab Tensile Strength 100 lbs. Grab Tensile Elongation 15% UV Resistance 70% Apparent Opening Size (AOS) 20 (US Sieve) 11.5 SILT FENCE The Contractor shall provide all labor, materials, tools and other items necessary to furnish and install the'silt fence as shown on the Drawings and specified herein. The silt fence shall be placed following the contours as closely as possible. The ends of the silt fence shall be turned uphill. The posts shall not exceed a spacing of 8 feet. The posts shall be driven into the ground and shall extend above ground as shown on the plans. The filter fabric shall be stapled or wired to each post. The filter fabric shall extend into the ground as shown in the plans. If possible, the filter fabric shall be cut from a continuous roll to avoid the use of joints. When joints are necessary, securely fasten the filter cloth only at a support with overlap to the next post. Silt fences shall be inspected weekly and after each significant storm (1 inch in 24 hrs.). Any required repairs shall be made immediately. Sediment shall be removed when it reaches 1/3 height of the fence or 9 inches maximum. Dispose of the sediment in the designated disposal area. 11.6 PUMP AROUND OPERATIONS The work covered by this item includes: providing, installing, maintaining, and removing all equipment and materials associated with the pumping of channel flow around work areas and dewatering zones during construction. The Contractor shall utilize the specified and appropriately sized pumps to convey the diversion of water flow away from the work area without creating a flood hazard or scour. The Contractor is responsible for determining (based on the direction of the Engineer) the location of coffer dams, pumps, discharge hose route, stilling basins, splash pads, and period of operation prior to the initiation of any pumping. An attempt will be made to complete all grading, channel shaping, in-stream structure construction, and stabilization for each section within one day. If work for any particular section cannot be completed in one day, a 24-hour pumping operation will be set up and maintained to facilitate the construction schedule. Bypass Pump The pump used to convey the stream flow around the work area during construction should be capable of pumping and discharging an estimated 40 gallons per minute. The Contractor is responsible for selecting a properly sized pump. This unit should be a silent and self- priming model with a self-contained fuel tank large enough to facilitate a 24-hour pumping operation. The pump should also be matched with the necessary footage of flexible or ductile hose and appropriately sized fittings. Dewatering Pump A second pump shall be used to dewater the work area between the dams. The pump must be of sufficient size to dewater the work area and pump that water from the bottom of the work area to the special stilling basin. The pump should be matched with the necessary footage of hose and the required fittings. Special Stilling Basin The special stilling basins are covered in detail under the "Special Stilling Basins" section. Temporary Splash Pad A temporary splash pad shall be used to dissipate energy from the discharge from the bypass pump. Alternatively, check dams may be modified and used for this purpose as determined by the Engineer. .11.7 SPECIAL STILLING BASINS The work covered by this section consists of furnishing, placing, and removing special stilling basins as directed by the plans and the Engineer. The special stilling basins shall be used to filter pumped water during construction. The quantity of special stilling basins may be increased, decreased, or eliminated entirely at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of work. S&EC Project No. 9296.D1 Connell Stream Restoration Page 14 Technical Specifications July 2005 The special stilling basins shall be a water permeable fabric bag that traps sand, silt, and fines from the sediment laden water entering. The filter fabric shall meet the requirements of Section 1056 for Type 2 Fabric. The special stilling basin shall be a bag constructed to a minimum size of 10' X 15' made from nonwoven fabric. There shall be a sewn-in 8 inch spout for receiving pump discharge. The bag seam shall be sewn with a double needle machine using a high strength thread. The seams shall have a minimum width strength of 60 lb/in (ASTM D-4884). The fabric used to construct the bag shall be stabilized to provide resistance to ultra-violet degradation and meet the following specifications for flow rates, strength, and permeability: Weight 8 oz/yd (ASTM D-3776) Grab Tensile 200 lb (ASTM D4632) Puncture 130 lb (ASTM D-4833) Flow Rate 80 gpm/sf (ASTM D-4491) Permittivity 1.5 I/sec (ASTM D4991) W Resistance 70 % (ASTM D-4355) The special stilling basins shall be placed so the incoming water flows through the bag without causing erosion. The bag will rest on Nonwoven Type 2 filter fabric. The contractor will grade the bed to ensure that the filtered water exits at the desired location. The exit location shall be chosen to prevent erosion. The neck or spout of the bag shall be tied tightly to prevent water from exiting the bag without passing through the walls. The special stilling basin shall be disposed of and replaced when it is 3/4 full of sediment, becomes torn or punctured, or is unable to filter sediment at a reasonable flow rate. Approval from Engineer must be received prior to removal and replacement of special stilling basins. Contractor is responsible for providing the necessary quantity of special stilling basins for the duration of the project. 11.8 TEMPORARY SEEDING The Contractor shall provide all labor, materials, tools, and other items necessary to provide temporary seeding in accordance with State and local Standards. Areas where no substantial or significant progress is made for more than 15 days shall be temporarily seeded as shown on the Drawings and specified herein. All areas must be seeded, mulched, and anchored unless written approval is granted by the Owner. Incidental grading shall not constitute substantial or significant progress in construction activity. Seeding and mulching shall be done immediately following construction. All disturbed areas shall be dressed to a depth of 8 inches. The top 3 inches shall be pulverized to provide a uniform seedbed. Agricultural lime shall be applied at a rate of 95 pounds per 1000 square feet (95 lbs. /1000 sq.ft.) immediately before plowing. Grass seed shall be applied at the following rate: 5-10-10 fertilizer shall be applied to all disturbed areas at a rate of 21 pounds per 1000 square feet (21 lbs./1000 sq.ft.), and mulching shall consist of small grain straw applied a rate of 70 pounds per 1000 square feet (70lbs./ I000sq.ft.). Mulch shall be anchored by roving or netting. END OF SECTION Type Dates Possible Rate Rye (Grain) Aug. 15 - Nov. 1 120 lbs./ac. Browntop Aug. 15 - Nov. 1 35 lbs./ac. Millet S&EC Project No. 9296.D1 Page 15 Technical Specifications Connell Stream Restoration July 2005 SECTION 12 - SITE MAINTENANCE 12.1 SECTION INCLUDES Site maintenance to ensure vigorous vegetative cover, stable channel lining, and durability of the work. 12.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 12.3 EXECUTION Contractor shall revisit the site as required in the special contract provisions to inspect the condition of the project site. Areas of erosion, settlement, poor vegetative cover, and displaced coir or excelsior materials or in-stream structures, shall be repaired. Site visits shall be coordinated with Owner. Erosion areas shall be filled and reseeded in accordance with Section 10 - Permanent Seeding. Areas of poor vegetative cover shall be reseeded and refertilized only. Displaced, damaged, or dead shrub species shall be removed, and replanted in accordance with Sections 8 & 9 - Stream Bank Planting and Buffer Planting. Displaced channel lining materials shall be recovered (if possible) and replaced, or replaced with new channel lining materials to the design line and grade. END OF SECTION S&EC Project No. 9296.D 1 Page 16 Technical Specifications Connell Stream Restoration July 2005 Q/ r- Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. 2 0 0 5 1 4 2 5 (it any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ? Riparian or Watershed Buffer Rules Section 10 Permit ? Isolated Wetland Permit from DWQ 401 Water Quality Certification ? Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: 14. 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 Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties li pia page 4), and the project is within a North Carolina Division of C a&ta a of Environmental Concern (see the top of page 2 for further detail e: - II. Applicant Information ?UL 2 7 2005 DENR - T ?? p(ER BRp,??Cn 1. Owner/Applicant Information v rlosMp S Name: Bob Connell Mailing Address: 6380 Gumwood Road Oak Ridge NC 27310 Telephone Number: 336-643-1616 Fax Number: 336-643-1640 E-mail Address: rconnell@triad.rr.com 2. Agent/Consultant 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:Jessica Regan Company Affiliation: Soil & Environmental Consultants. PA Mailing Address: 11010 Raven Ridge Road Raleigh NC 27614 Telephone Number: 919-846-5900 Fax Number: 919-846-9467 E-mail Address:__ iregan@sandec.com Pagel of 9 III. Project Information Attach a vicinity map clearly showing the location 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: Gumwood Road Stream Restoration 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 160100540105200012 4. Location County: Guilford Nearest Town: Oak Ridge Subdivision name (include phase/lot number): N/A Directions to site (include road numbers/names, landmarks, etc.): From Interstate 40, travel north on Hwy 68 to Oak Ridge. Turn right onto Hwy 150 and right onto Bunch Road. Turn right onto Gumwood Road. Follow Gumwood Road onto the Connell property. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): (Begin Restoration) 361 10'12"'N 79157'36"'W (End Restoration) 36110'5"N 79° 57' 34" °W 6. Property size (acres): 27 acres (Project length = 950 ft) 7. Name of nearest receiving body of water: Beaver Creek 8. River Basin: Cape Fear (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.nc.us/admin/maps/:) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Existing land use in the vicinity of the project is primarily residential, agricultural, and/or undeveloped. An unnamed tributary to Beaver Creek onsite has been excavated and degraded. Page 2 of 9 10. Describe the overall project in detail, including the type of equipment to be used: The project will consist of light grading installation of stream structures and the planting of vegetation. Typical heavy equipment will be used 11. Explain the purpose of the proposed work: The purpose of the proposed work is to restore/stabilize approximately 950 linear feet of degraded channel A culverted crossing of the unnamed tributary of Beaver Creek will be installed for access to the remainder of the property. 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 Notice of Violation was received by the owner on November 18 2004 for failure to secure a 401 nationwide permit and for the degradation of the stream channel. A copy of this NOV is included. 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. No additional impacts are 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. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream 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. Page 3 of 9 1. Provide a written description of the proposed impacts: Approximately 950 linear feet of stream channel (an unnamed tributary of Beaver Creek) will be stabilized utilizing in- stream structures, including a series of J-hooks and cross vanes Proposed impacts due to a crossing of the unnamed tributary of Beaver Creek include 20 linear feet of impacts, due to the installation of a culverted crossing The invert of the pipe will be buried, maintaining a natural bed and allowing for aquatic passage Structures will be placed immediately up and downstream of the pipe maintaining grade. 2. Individually list wetland impacts. Types of 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. Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within l 100- oo ayear F(yes/no) n Distance to Nearest Stream linear feet Area of Impact (acres) N/A N/A N/A N/A N/A N/A Total Wetland Impact (acres) N/A 3. List the total acreage (estimated) of all existing wetlands on the property: N/A 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, 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. To calculate acreage, multiply length X width, then divide by 43,560. Stream Impact Perennial or Average Impact Area of Number Stream Name Type of Impact Intermittent? Stream Width Length Impact indicate on ma Before Impact linear feet acres Crossing ut Beaver Culverted perennial 7' 20' 0 003 Creek Crossing . Total Stream Impact (by length and acreage) 20' 0.003 Page 4 of 9 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill, excavation, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Site Number indicate on ma Name of Waterbody (if applicable) Type of Impact Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. Area of Impact acres N/A N/A N/A N/A N/A Total Open Water Impact (acres) N/A 6. List the cumulative impact to all Waters of the U.S. resulting from the project: Stream Im act (acres): 0.003 Wetland Impact (acres): N/A Open Water Impact (acres): N/A Total Impact to Waters of the U.S. (acres) N/A Total Stream Impact linear feet): 20 7. Isolated Waters Do any isolated waters exist on the property? ? Yes ® No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). . Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. N/A 8. 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.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Current land use in the vicinity of the pond: Size of watershed draining to pond: Expected pond surface area: 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 Page 5 of 9 were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The design for the stabilization of the stream channel avoided several large diameter trees existing onsite in order to preserve as much of the buffer as possible Efforts were made to disturb the channel as little as possible while still utilizing natural channel design principles and providing a stable channel The proposed stream impacts due to the culverted crossing of an unnamed tributary Beaver Creek are necessary in order to allow access to the remainder of the property. The invertof the pipe will be buried so as to maintain a natural bed and allow for aquatic passage 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 January 15, 2002, 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 NCEEP 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.nc.us/ncwetlands/strmizide.html,. 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. The proposed stream stabilization includes the installation of a series of J-hooks and cross vanes in order to stabilize the existing degraded channel Planting of live stakes will occur along the banks Please seethe included plan sheets for additional details Page 6 of 9 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wM/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): N/A Amount of buffer mitigation requested (square feet): N/A Amount of Riparian wetland mitigation requested (acres): N/A Amount of Non-riparian wetland mitigation requested (acres): N/A Amount of Coastal wetland mitigation requested (acres): N/A IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ? No 2. 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 ? No E] 3. 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 (required by DWQ) 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 Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 0213.0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No Page 7 of 9 2. If "yes", 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* Impact (square feet Multiplier Required Mitigation 1 N/A 3 (2 for Catawba) N/A 2 N/A 1.5 N/A Total N/A N/A * Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 213.0242 or.0244, or.0260. N/A XI. Stormwater (required by DWQ) Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. Impervious surface will be less than 20%. For details on sediment and erosion control measures. please refer to the enclosed Stream Restoration Plan. XII. Sewage Disposal (required by DWQ) 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. Wastewater generated from _ the pump-around operations durinl? the stream restoration/enhancement will be treated in a stilling basin before discharge to Beaver Creek. Details of this operation are included in the attached Stream Restoration Plan sheets. XIII. Violations (required by DWQ) 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 XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ? No Page 8 of 9 If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: XV. 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). 7 2& -o s .pplicant/Agent's Signat Date signature is valid only if Affluthorization letter from the applicant is provided.) Page 9 of 9 Soil & Environmental Consultants, PA 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com AGENT AUTHORIZATION FORM All Blanks To Be Filled In By The Current Landowner Name: Address: Phone: _,31-g z- 6?+ (..? Project Name/ Description: 6 • ???EII aj t-mL&f? Date: ? c7 s The Department of the Army U.S. Army Corps of Engineers, Wilmington District P.O. Box 1890 Wilmington, NC 28402 Attn: ANAp_y, w4r,6 Field Office: TALEI&H Re: Wetlands Related Consulting and Permitting To Whom It May Concern: I, the current ro er owner, hereby designate and authorize Soil & Environmental Consultants, PA to act in my behalf as my agent in the processing of permit applications, to furnish upon request supplemental informati n in support of applications, etc. from this day forward. The 29' ay of This notification supersedes any previous correspondence concerning the agent for this project. NOTICE: This authorization, for liability and professional courtesy reasons, is valid only for government officials to enter the property when accompanied by S&EC staff. You should call S&EC to arrange a site meeting prior to visiting the site. Ike 6tn? ( .•'t??z?? Print Property Owner's Name Property Owner's Signature cc: Ms. Cyndi Karoly NCDENR - DWQ 2321 Crabtree Boulevard Raleigh, NC 27604 cc: Mr. Kevin C. Martin Soil & Environmental Consultants, PA N Project #: Scale: 9296A1 1":2000' Mgr.: PS 1 05.11-05 Figure 1- USGS Summerfield Quad Wildflower Subdivision Guilford County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd. - Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com N ProjectM Scale: Figure 2-Guildford 9296.D1 1":1667' County Soil Survey Project Date: Mgr.: PS 05.11-05 Sheet 13 Wildflower Subdivision Guilford County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com 11/24/2004 6:31 AM FROM. (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 002 OF 004 OF. W A 7-FR O? p r DwG November 18, 2004 CERTIFIED MAIL: 7003 31 10 0003 6489 8001 Return Receipt Requested Mr. Robert Connell 6380 Gl3mwood Road Oak Ridge, NC 27310 Michael F. Fawley, Cw%ernur William G. Ross Jr., Sccrean North Carolina Depwinicat uC En ironrnent and Nunlral RcsOUree, :flan W. Klimek. P.1:. Director Dicisinn of WatCr Quality SUBJECT: NOTICE OF VIOLATION and RECOMMENDATION for ENFORCEMENT ACTION Failure to Secure a 401 Water Quality Certification Stream Standard Violation 6 380 Gumwood Road Guilford County Dear Mr. Connell: On November 3, 2004, Mr. Daryl Lamb from the Winston-Salem Regional Office of the Department of Environment and Natural Resources, Division of Water Quality, conducted a site inspection of the subject property. Observations indicated that approximately 975 linear feet an unnamed tributary to Bcaver Creek, Cape Fear River Basin, Class WS-III, NSW waters, had been impacted by the excavation of the stream banks, excavation of the streambed substrate (stream floor), removal of the riffle-pools, and grading of the riparian area. During the site visit Mr. Lamb took measurements and made observations of the stream impacts. As a result of these observations, the Winston-Salem Regional Office conducted a file review. Accordingly, the following violations were confirmed as a result of this review and the site inspection: 1) failure to obtain a Section 401 Water Quality Certification, and 2) preclusion of best usage. Violation 1. Failure to Obtain a Section 401 Water Quality Certification The Winston-Salem Regional Office confirmed that approximately 975 linear feet of stream channel and banks had been impacted by excavation prior to the proper securing of a Section 404 Nationwide Permit from the U. S. Army Corps of Engineers. A file review indicates that the U.S. Army Corps of Engineers (COE) has not authorized use of a Nation Wide Permit for these activities nor has notification been provided by the Corps of Engineers for these activities. Accordingly, the review confr3ed that no Pre-construction Notification has been received by the Division of Water Quality for this project, and no Section 401 Water Quality Certification has been issued, nor are these activities covered by a General Section 401 Water Quality Certification. A Section 401 Water \orthCarolina ,J17aturaily North Carolina Di%i,iun (11'Wuler Quality W'ellunds Cerni-watitm l,nit 1650 Mail Sen ice Center Ralcieh, NC 27699-1650 Phone (919) 733-1786 rAX (911)1 733-2496 321 Cruhtree13hd. Raleigh, NC 27604-2260 Internet http/Ch2o.enrstatencus/ncwetlands Uustomcr Sen ice \umher: 1-877-62'-048 An Equal Opportuni:yrAffirmative Action Employer - 50% Recycledr10% Past Consumer Paper 11/24/2004 6:31 AM FROM. (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 003 OF 004 Mr. Robert Connell Page 2 November 18, 2004 Quality Certification is required for the above-mentioned impacts pursuant to 15A NCAC 2H .0500. Violation 2. Preclusion of Best Usage A DWQ site visit and file review confirmed that approximately 975 linear feet of stream impacts occurred to an unnamed tributary to Beaver Creek. Specifically, the impacts include the excavation of the stream bank, excavation of the streambed substrate (stream floor), removal of the riffle-pools, and the -rading of the riparian area. These impacts to waters represent a removal of best usage, which is a stream standard violation. Specifically, 15A NCAC 213.0211 (2) states that the preclusion of best usage, which includes aquatic life propagation and maintenance of biological integrity, wildlife, secondary recreation, and agriculture, represents a water quality standard violation. Required Response and Corrective Action The Division of Water Quality requires that the violations detailed above be abated immediately. These violations, and any future violations, are subject to a civil penalty assessment of up to S25,000 per day for each violation. The Division of Water Quality requests that you respond in writing within 20 days of receiving this Notice. Please submit your written response to Daryl Lamb, Division of Water Quality, Winston-Salem Regional Office, 585 Waughtown Street, Winston-Salem, IBC 27107. Your response should address the following items: 1. Please provide a map that details the location and number of feet of stream channel impact. This map should clearly indicate the position of the impacted stream channel relative to adjacent property lines, nearby buildings, roadways, culverts, ponds, sediment retention basins, and any other significant structures immediately above and below the impacted reach. 2. Please explain.why you did not secure authorization from the U. S. Army Corps of Engineers (404 Permit) and the Division of Water Quality, N. C. Department of Environment and Natural Resources, (401 Water Quality Certification) for this activity. 3. You must restore the impacted stream section and adjoining riparian area. You must submit a stream restoration plan to the Division of Water Quality. Copies of this plan should be sent to Danny Smith, Division of Water Quality, Wetlands and Stormwrater Branch, Compliance and Assistance Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 and to Daryl Lamb, Division of Water Quality, Winston-Salem Regional Office, 585 Waughtown Street, Winston- Salem, NC 27107. In addition, you should contact the U. S. Army Corps of Engineers at (919) 876-8441 and the Division of Land Resources, N. C. Department of Environment and Natural Resources, Winston-Salem Regional Office, at (336) 771-4600 to ensure that your restoration plans are in compliance with the requirements of Section 404 of the Clean Water Act and the requirements of the Division of Land Resources. This restoration plan must include your proposal for the physical restoration of the stream to the original dimensions, pattern and profile that existed before the dredging of the stream. This plan must also include the measures that will be used to establish a stable stream channel, stream banks, and adjacent riparian zone. The plan should include the following: a) a reference stream with a description of its profile, pattern and dimensions and a detailed 11/24/2004 6:31 AM FROM: (336) 643-1640 Robert D. Connell, CPA TO: 19198469467 PAGE: 004 OF 004 Mr. Robert Connell Page 3 November 18, 2004 description of the methods, materials, and structures necessary to install such a stream. You arc encouraged to secure an environmental consultant to assist you with the plan's development, and the securing of required permits, certifications and authorizations necessary to implement the plan. b) a riparian zone restoration plan. The stream banks and the riparian zone must be stabilised and planted with woody vegetation. You should also specifically address the location of the riparian area to be restored and how you can insure that future impacts to stream and the riparian zone will not occur. A planting plan must be developed and implemented in order to ensure that at least two native tree species are planted at a density sufficient to provide 320 trees per acre at maturity. This density is usually achieved by planting approximately 436 trees/acre on a 10 x 10 ft. grid or 681 trees/acre on an 8 x 8 ft. grid. Please see the attached Guidelines for Riparian Buffer Restoration (January 2001) for assistance in developing your plan. This plan must include the types of native woody vegetation selected, methodology of planting, and a site map indicating the location of the replanting efforts. 4. In order to stabilize the streamside areas in the interim, please immediately install temporary ground cover along the stream banks. This ground cover should be suitable for the current soil conditions and time ofycar. We ask that you give your immediate attention to this matter and that your response address all of the items listed above. Please be advised that this Office is considering sending a recommendation- for enforcement action to the Director of the Division of Water Quality regarding these issues. Your response to this correspondence will be considered in this process. If you have questions concerning this matter, or if this Office can be of assistance, please contact Daryl Lamb at (336) 771-4600, extension 293, or Danny Smith at (919) 733-5083, extension 353. Sincerely, Steve W. Tedder Regional Supervisor Division of Water Quality S WT/cdl cc: Ms. Andrea Wade, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office DWQ, Winston-Salem Regional Office Central Files Wetlands/401 Unit File Copy Mr. Earl Davis, Soil Erosion Control Section, Guilford County Planning & Development Department, P. O. Box 3427, Greensboro, NC 27402 TECHNICAL SPECIFICATIONS FOR CONNELL PROPERTY STREAM RESTORATION GUILFORD COUNTY, NORTH CAROLINA S&EC Project No. 9296.1) 1 JULY 2005 PRELIMINARY NOT FOR CONSTRUCTION Patrick K. Smith, P.E. NC License No. 25525 i Soil & Environmental Consultants, PA 11010 Ravea Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com TECHNICAL SPECIFICATIONS TABLE OF CONTENTS TITLE PAGE TABLE OF CONTENTS 1.1 SECTION INCLUDES 1.2 SUMMARY OF WORK ' 1.3 WORKFORCE EXPERIENCE 1.4 SPECIFIC EQUIPMENT REQUIREMENTS ' 1.5 MEASUREMENT AND PAYMENT SECTION 2 - TEMPORARY FACILITIES ' 2.1 SECTION INCLUDES 2.2 MEASUREMENT AND PAYMENT 2.3 TEMPORARY SANITARY FACILITIES 2.4 BARRIERS 2.5 TRAFFIC CONTROL 2.6 STAGING AREA 2.7 COORDINATION WITH OWNER AND OTHER CONTRACTORS 2.8 PROTECTION OF EXISTING FACILITIES, STRUCTURES, AND SERVICES 2.9 PROTECTION OF INSTALLED WORK ' 2.10 PROGRESS CLEANING AND WASTE REMOVAL 2.11 EROSION CONTROL 2.12 FINAL CLEANING SECTION 3 - QUALITY CONTROL 3.1 SECTION INCLUDES ' 2 3 MEASUREMENT AND PAYMENT . 3.3 REFERENCES ' 3 4 CONSTRUCTION OBSERVATION . 3.5 PLANTING OBSERVATION 3 6 SOIL TESTING . 3.7 NOTICE REQUIRED FOR TESTING SECTION 4 - SITE PREPARATION i SECTION 4 - SITE PREPARATION 4 ii 4.1 SECTION INCLUDES 4 1 4.2 MEASUREMENT AND PAYMENT 4 1 4.3 UTILITY LOCATION AND PROTECTION 4 1 4.4 SEDIMENTATION AND EROSION CONTROL 4 1 4.5 CONSTRUCTION LAYOUT 4 1 4.6 CLEARING, GRUBBING, AND STRIPPING 4 1 4.7 DEWATERING 4 1 SECTION 5 - EXCAVATION 5 1 5.1 SECTION INCLUDES 5 1 5.2 MEASUREMENT AND PAYMENT 5 1 5.3 REFERENCES 5 1 5.4 PREPARATION 5 1 5.5 EXCAVATING 5 5.6 PLANTING PREPARATION 5 2 5.7 TOLERANCES 5 SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6 2 6.1 SECTION INCLUDES 6 2 6.2 MEASUREMENT AND PAYMENT 6 6.3 REFERENCES 6 2 6.4 FILL MATERIALS 6 2 6.5 PREPARATION 6 2 6.6 BACKFILLING, FILLING, AND SURFACE 3 PREPARATION 6 3 6.7 COMPACTION AND QUALITY CONTROL 7 3 6.8 PROTECTION OF FINISHED WORK 7 3 6.9 TOLERANCES 7 3 SECTION 7 - CHANNEL PROTECTIVE LININGS AND IN- 3 STREAM STRUCTURES 7 3 7.1 SECTION INCLUDES 7 3 7.2 MEASUREMENT AND PAYMENT 7 4 7.3 REFERENCES 7 C ll 7.4 GENERAL 7 9.10 PLANTING PERIODS 7.5 MATERIALS 7 9.11 REMOVAL OF NUISANCE VEGETATION 7.6 IN-STREAM STRUCTURES 8 9.12 WATER FOR PLANTINGS ' 7.7' CHANNEL PROTECTIVE LININGS 9 9.13 SUBMITTALS 7.8 SLOPE PROTECTION 9 SECTION 10 -PERMANENT SEEDING SECTION 8 - STREAM BANK PLANTING 10 10.1 SECTION INCLUDES 8.1 SECTION INCLUDES 10 10.2 MEASUREMENT AND PAYMENT 8.2 MEASUREMENT AND PAYMENT 10 10.3 REFERENCES 8.3 REFERENCES 10 10.4 GENERAL ' 8.4 GENERAL 10 10.5 SEEDBED PREPARATION 8.5 PLANT STAKES AND CUTTINGS 10 10.6 SEEDING ' 8.6 PLANT SUBSTITUTION 10 10.7 SEEDING DATES 8.7 PLANTING PREPARATION 10 10.8 SOIL AMENDMENTS ' 8.8 STREAM BANK PLANTING 10 10.9 MULCH 8.9 PLANTING PERIODS 10 SECTION 1 l - SEDIMENT & EROSION CONTROL 8.10 REMOVAL OF NUISANCE VEGETATION 10 11.1 SECTION INCLUDES 8.11 WATER FOR PLANTINGS 10 11.2 MEASUREMENT AND PAYMENT ' 8.12 SUBMITTALS 11 11.3 REFERENCES SECTION 9 - BUFFER PLANTING 11 11.4 MATERIALS ' 9.1 SECTION INCLUDES 11 11.5 SILT FENCE 9.2 MEASUREMENT AND PAYMENT 11 11.6 PUMP AROUND OPERATIONS ' 9.3 REFERENCES 11 11.7 SPECIAL STILLING BASINS 9.4 GENERAL 11 11.8 TEMPORARY SEEDING ' 9.5 CONTAINER GROWN PLANTS 12 SECTION 12 - SITE MAINTENANCE ' - _ -9:6- BARE ROOT PLANTS - --12--- 12.1 - SECTION INCLUDES 9.7 PLANT STAKES AND CUTTINGS 12 12.2 MEASUREMENT AND PAYMENT ' 9.8 PLANT SUBSTITUTION 12 12.3 EXECUTION 9.9 PLANTING PREPARATION 12 t 12 12 12 12 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 15 16 16 16 16 SECTION 1 - GENERAL REQUIREMENTS 1.1 SECTION INCLUDES General requirements and information related to the work including, summary of work, measurement and payment, and reference to SPECIAL CONTRACT PROVISIONS. 1.2 SUMMARY OF WORK The CONNELL STREAM RESTORATION project consists of the earthwork construction of a restored channel, floodplain grading, and planting of the restored channel banks and surrounding buffer area Refer to the Construction Drawings and to these Specifications for project details. The stream restoration is just one of a multipart construction plan associated with the development of the larger tract. 1.3 WORKFORCE EXPERIENCE The contractor is required to have the appropriately experienced personnel on site to operate equipment and insure that the construction sequence and installation procedures are followed as determined by the Engineer. Contractor personnel should be familiar with stream restoration techniques and the correct method of installing in-stream structures (i.e. rock and log j-hooks and cross vanes). 1.4 SPECIFIC EQUIPMENT REQUIREMENTS The Contractor is required to have at a minimum two excavators with hydraulic thumbs during the entire course of construction unless otherwise approved by the Engineer. The hydraulic excavators must be of sufficient size to lift, manipulate, and install boulders larger than 5- foot by 4-foot by 3-foot (a maximum of 6 tons). 1.5 MEASUREMENT AND PAYMENT All measurement and payment for services performed shall be as indicated in the SPECIAL CONTRACT PROVISIONS. As such, they are not defined in these technical Specifications. END OF SECTION Contractor shall provide appropriate spill prevention measures. The Contractor shall provide a spill containment plan for both the staging area and the construction area. The plan shall include prevention, containment, and control of fuel or oil spillage from equipment storage, refueling, maintenance, and operation on site. The plan shall address both mobile and non-mobile equipment used during construction. Emergency spill cleanup equipment for oil and fuel spills shall be stored on site. The Contractor shall notify the Owner and all applicable agencies within 24 hours of any spill. SECTION 2 - TEMPORARY FACILITIES 2.1 SECTION INCLUDES Required temporary facilities including site access, temporary sanitary facilities, barriers, traffic control, construction staging area, Contractor coordination, protection of existing facilities and installed work, erosion control measures, and general site cleaning. 2.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 2.3 TEMPORARY SANITARY FACILITIES Provide and maintain required sanitary facilities and enclosures. No permanent sanitary facilities exist at the project site. 2.4 BARRIERS Provide barriers to prevent unauthorized entry to construction areas, to allow for Owner and Engineer access to site, and to protect existing structures and adjacent properties from damage due to construction operations. 2.5 TRAFFIC CONTROL Provide traffic control as required to protect the public safety. Conform to all requirements of State, County, City, or local laws and requirements for traffic control. Conformance with contract documents does not relieve the Contractor from responsibility for public safety. Construction operations may be underway on adjoining portions of the site. 2.6 STAGING AREA The Owner will designate an area for staging of Contractor's equipment and construction materials for the duration of construction. This area shall be maintained so as to provide a sightly appearance and a safe working environment. No other area shall be used for this purpose without the approval of the Owner. Storage of oil or fuel shall be confined to the construction staging area Refueling of all vehicles and equipment shall occur only in the staging area. Refueling of non-mobile equipment located outside of the staging area will be allowed with Owner approval. No refueling shall occur within fifty feet of the restored channel, Beaver Creek, or any other surface water or wetland. The Contractor shall take appropriate measures to ensure safe fueling procedures are followed, ----- - - S&EC Project No. 9296.D1 Page 1 Technical Specifications Connell Property Stream Restoration July 2005 2.7 COORDINATION WITH OWNER AND OTHER CONTRACTORS As this project is just one portion of the overall site work, close coordination with the Owner, Site Engineer, and other Contractors will be necessary. . Perform coordination with Owner and schedule work to ensure limited disruption of daily operations at adjoining construction sites, and any other contractors on-site. Obtain approval from Owner prior to the ' disruption of any access to site utilities, structures, or locations. Coordinate the disruption of any utility services without regard to duration. Provide continuous representation/point of contact for ' Owner during all site activities. Coordinate for access to construction site to reduce the potential for disruption and lack of productivity of other contractors on adjoining sites and other contractors on-site. Access to construction site shall be limited to the entrance designated on the plans. Only access points approved by the Owner shall be used during construction. 2.8 PROTECTION OF EXISTING FACILITIES, STRUCTURES, AND SERVICES The project vicinity to include existing access routes will continue to be used for daily operations by Owner and other contractors throughout the duration of construction. The Contractor shall protect existing facilities, structures, and services throughout the duration of construction and provide special protection where specified in individual specification sections. Provide temporary and removable protection for existing structures and services. Control activity in immediate vicinity of facilities, structures, and services to prevent damage. Any facility, structure, or services disturbed or damaged, either intentionally or unintentionally, shall be removed and reinstalled or repaired to the Owner's satisfaction. Repairs to or replacement of facilities, structures, or services shall be performed at the expense of the Contractor. Repairs and/or replacement shall occur without additional cost to the Owner. 2.9 PROTECTION OF INSTALLED WORK ' Protect installed work and provide special protection where specified in individual specification sections. Provide temporary and removable protection for installed work and products. Control activity in immediate work area to prevent damage. Any installed work disturbed or damaged, shall be removed and reinstalled or repaired to the Engineer's satisfaction. Repairs to or replacement of installed work shall be performed at the expense of the Contractor. Repairs and - - - -- - replacement shall occur without additional cost to the Owner. - --- 2. 10 PROGRESS CLEANING AND WASTE REMOVAL ' Maintain areas free of waste materials, debris, and rubbish. Maintain site in a clean and orderly condition. Collect and remove waste materials, debris, and rubbish from site daily and dispose off site. Remove temporary utilities, equipment, facilities, and materials prior to ' Final Application for Payment inspection. Restore existing facilities used during construction to original condition. t. 2.11 EROSION CONTROL Contractor shall be responsible for preventing erosion on the site and sedimentation off the site. Methods shall be employed as recommended in the North Carolina Erosion and Sediment Control Planning and Design Manual, latest edition. 2.12 FINAL CLEANING Execute final cleaning prior to final project assessment. Clean site and all installed work. Remove waste and surplus construction materials, rubbish, and construction facilities from the site. END OF SECTION S&EC Project No. 9296.1) 1 Page 2 Technical Specifications Connell Property Stream Restoration July 2005 SECTION 3 - QUALITY CONTROL 3.1 SECTION INCLUDES Observation of construction operations and buffer and stream bank planting. Independent testing laboratory soil testing and reporting 3.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS. Unless indicated otherwise, the Owner will arrange and pay for initial planting observation for quality assurance. Re-observation testing required because of non-conformance to plans or Specifications shall be charged against any money owed to Contractor. Contractor is encouraged to perform quality control checks and testing at Contractor's expense to reduce the possibility of rejected work. 3.3 REFERENCES For products or workmanship specified by association, trade, or other consensus, comply with requirements of the standard, except when more rigid requirements are specified or are required by applicable codes. Conform to reference standard by date of issue on date of Contract Documents, except where a specific date is established by code. Section 6 (Filling, Backfilling, and Compaction) of these Specifications. Section 8 (Stream Bank Planting) of these Specifications. Section 9 (Wetland and Buffer Planting) of these Specifications. 3.4 CONSTRUCTION OBSERVATION The Owner has engaged the Engineer to observe construction operations as required in these Specifications. Reports (either verbal or written) shall be submitted concurrently to the Engineer, Owner, and Contractor, indicating observations indicating compliance or non-compliance with Contract Documents. Observation of construction operations does not relieve Contractor of obligation to perform work to contract requirements. The Contractor shall allow observation personnel access to materials, and the construction site as required. 3.5 PLANTING OBSERVATION The Owner has engaged the Engineer to observe stream bank and buffer planting as required in these Specifications. Reports will be submitted concurrently to the Engineer, Owner, and Contractor, . indicating observations and indicating compliance or non-compliance with Contract Documents. Observation of planting operations does not relieve Contractor of obligation to perform work to contract requirements. The Contractor shall allow observation personnel access to materials (see stream bank plantings specified in Section 8), and the construction site as required. 3.6 SOIL TESTING The Owner will arrange and pay for independent soil laboratory testing as required in these Specifications. Reports will be submitted concurrently to the Engineer, Owner, and Contractor, indicating observations and results of tests and indicating compliance or non-compliance with Contract Documents. Testing or inspecting does not relieve Contractor of obligation to perform Work to contract requirements. The Contractor shall allow testing personnel access to materials and the construction site as required. 3.7 NOTICE REQUIRED FOR TESTING Contractor shall provide Owner at least 24 hours notice for any work requiring planting observation and/or soil testing. END OF SECTION S&EC Project No. 9296.13 1 Connell Property Stream Restoration Page 3 Technical Specifications July 2005 SECTION 4 - SITE PREPARATION u 4.1 SECTION INCLUDES Site preparation shall consist of utility location and protection, clearing, grubbing and stripping of the work area, and construction of any required temporary construction access routes and temporary sediment and erosion control measures. 4.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 4.3 UTILITY LOCATION AND PROTECTION The Contractor shall locate all existing utilities and mark for identification. Contractor shall provide means for protecting utilities from any damage during site work. Repair of damaged utilities shall be at Contractor's expense. Coordination should be made with Owner to locate and mark site specific utilities. NC ONE CALL (1-800-632- 4949) 4.4 SEDIMENTATION AND EROSION CONTROL Contractor shall be responsible for preventing erosion on the site and sedimentation off the site. Methods shall be employed as recommended in the North Carolina Erosion and Sediment Control Planning and Design Manual, latest edition. The Contractor shall control sedimentation runoff with methods approved by the Engineer during the course of construction of this Project. Due to the magnitude of the clearing and grubbing associated with the overall development project, an Erosion Control Plan will be required. We have assumed that the grading associated with the stream restoration portion of this project will be covered under the Approved Erosion and Sediment Control Plan for the site development. Temporary erosion and sediment control measures shall be installed as described in Section 11 (Sediment & Erosion Control). The Contractor shall conform to all the rules, regulations, laws, and ordinances of the State of North Carolina, and of all other authorities having jurisdiction. 4.5 CONSTRUCTION LAYOUT The layout survey will be performed by Soil & Environmental Consultants, PA (S&EC) or its subcontractors. The construction layout will include but will not necessarily be limited to: channel alignment, earthwork limits, and appropriate grading values. The Contractor is not - - responsible-for the construction surveying,-layouts oras-built; however, the maintenance and preservation of the construction stakes is the responsibility of the Contractor. Damage to layout stakes due to contractor negligence as determined by the Engineer will be the Contractor's responsibility, and payment equivalent to the time and materials required to re-stake the project by S&EC or its subcontractors will be required. Layout staking will be coordinated with the project phasing in order to reduce/eliminate potential damage. The Contractor is required to have a laser level or other equivalent equipment available on site during the entire period of construction. 4.6 CLEARING, GRUBBING, AND STRIPPING Conform to applicable code for environmental requirements, disposal of debris, and erosion and sedimentation control as described above. Coordinate clearing work with utility owners and operators as described above. Establish a schedule for daily removal of debris from the site. Debris may not be stockpiled on site. Clear areas required for access to site and execution of work. Remove trees, stumps, other wood, metal, or rubble debris within work areas. Remove stumps, main root ball, and all roots with a diameter greater than 2 inches. Leave area in a clean and neat condition. Grade site surface daily to control the direction of channelized flow and prevent free standing surface water. In areas where stream restoration will be implemented, the existing top six inches of soil should be removed and stockpiled prior to excavation, construction, or reconstruction. efforts. 4.7 DEWATERING Comply with all rules, regulations, laws, and ordinances of the State of North Carolina, and of all other authorities having jurisdiction. Provide without additional cost to the Owner all labor, materials, equipment, and services necessary to make the work comply with such requirements. Install all barriers, erosion and sedimentation control, silt fences, turbidity curtains, and other measures as required to prevent off-site sedimentation. Grade and ditch the site or provide sumps and pumps as necessary to direct surface runoff away from open excavations and subgrade surfaces. Provide and maintain temporary trenches, drain pipes, sumps, and other equipment to keep all excavations dry. Collect and remove all groundwater seepage, surface runoff, and wastewater from construction activities. All water pumped or drained from the Work shall be disposed of in a manner that will not result in undue interference with other work or damage to adjacent properties, other surfaces, structures, and utilities. Suitable temporary pipes, flumes, or channels shall be provided for water that may flow along or across the site of the Work. All water due to the dewatering operation shall be legally disposed of in accordance with all applicable state and federal regulations and other applicable regulations. Under no circumstances shall fill be placed in excavations containing standing water without approval of the Engineer. END OF SECTION S&EC Project No. 9296.131 Page 4 Technical Specifications ' Connell Stream Restoration July 2005 SECTION 5 - EXCAVATION 5.1 SECTION INCLUDES Provide all necessary equipment and labor to excavate for channel restoration without damage or interruption of utility service. ' 5.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS ' 5.3 REFERENCES Occupational Safety and Health Administration - Construction Standards for Excavations, 29 CFR Part 1926.650-.652. When the Specifications or Drawings differ from the requirements of ' the above-referenced documents, the more stringent requirements shall apply. 5.4 PREPARATION ' Locate, identify, and protect utilities from damage as described in Section 4.3. Notify utility companies and coordinate for and/or install . protection of utilities. ' 5.5 EXCAVATING Protect all utilities and structures that may be damaged by excavating 1 work. In areas where stream and floodplain grading will be implemented, the existing top six inches of soil should be removed and stored prior to ' construction or reconstruction efforts. Excavate subsoil to accommodate restored channel cross-sections, and other site work as shown on the Drawings. Perform Work in accordance with Occupational Safety and Health Administration (OSHA) - Construction Standards for Excavations, 29 CFR Part 1926.650-.652. Provide trench and excavation protection as required. ' Slope banks with machine to stable slope or flatter until shored. Grade top perimeter of excavation to prevent surface water from draining into excavation. Where required to protect utilities, perform excavation by hand. 5.6 PLANTING PREPARATION In areas where buffer planting will be implemented, the stockpiled topsoil should be redistributed in preparation for restoration planting operations as described in SECTION 7 (Channel Protective Linings and In-stream Structures) of these Specifications. All areas where topsoil is distributed shall be disked or harrowed to ensure soil aeration and to increase the surface roughness prior to planting. 5.7 TOLERANCES Top surface of channel protective lining (where applicable): Plus or minus one inch from required elevations. Top surface of fill, backfill, and topsoil: Plus or minus one inch from required elevations. END OF SECTION ' Remove cemented subsoil, boulders, and rock. Cemented subsoil, boulders, and rock shall be defined as materials which can not be readily broken down to less than 1/4 cu. yd. solid volume by _concentrated effort of a track-mounted excavator, equivalent to a-- Caterpillar 225, equipped with rock teeth. Notify Engineer if subsurface conditions require excavation of larger cemented subsoil, boulders, and rock, and discontinue Work in affected area until notified ' to resume work. If cemented subsoil, boulders, or rock greater than %: cu. yd. solid volume is encountered above required excavation, Engineer may direct adjustment in construction elevations. Adjustment of elevations shall not be a basis for additional payment. ' Correct areas over excavated in accordance with Section 6 (Filling, Backfilling, and Compaction). Stockpile select excavated material on- site for re-use in backfill. Stockpile location shall be subject to Owner ' approval. C, S&EC Project No. 9296.1) 1 Page 5 Technical Specifications ' Connell Stream Restoration July 2005 SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6.1 SECTION INCLUDES Provide all necessary equipment and labor to perform filling, backfilling, and compaction necessary for construction of restored stream channel, and other site work as shown on the Drawings without damage or interruption of utility service. Replacement of removed topsoil shall be as described in SECTION 5.6 (Planting Preparation) of these Specifications. 6.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 6.3 REFERENCES ASTM D698 - Test Methods for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures, Using 5.5 lb. Rammer and 12-inch Drop. ASTM D1556 - Test Method for Density of Soil in Place by the Sand-Cone Method. ASTM D2922 - Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth). ASTM D3017 - Test Methods for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth). ASTM D2487 - Classification of Soils for Engineering Purposes. When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 6.4 FILL MATERIALS Soil excavated during construction and stockpiled may be re-used as fill provided that it can be conditioned and compacted as specified. Supplement or replace excavated soils with ordinary fill as needed to complete work. Ordinary fill shall be any soil classified as SM, SC, SP-SM, SP-SC, SC-SM, SP, or SW under ASTM D2487. If soil excavated during cut operations is not re-used, it shall be removed from the site to an appropriate disposal facility at no additional charge to Owner. The Contractor shall be responsible for the payment of all fees associated with transportation and disposal of -unusable materials. - -- - -- - -- - Suitable borrow material may be available within the vicinity of the project site but must be identified by a Geotechnical Engineer. The Contractor shall obtain results of a Standard Proctor test, Atterberg Limits test, and classification in accordance with ASTM D2487, and submit to the Engineer for approval. 6.5 PREPARATION 6.6 BACKFILLING, FILLING, AND SURFACE PREPARATION Backfill areas to contours and elevations with unfrozen materials. Do not backfill over porous, frozen, or spongy subgrade surfaces. Employ a placement method that does not disturb or damage other work. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. Make gradual grade changes. Blend slope into level areas. Place backfill and fill in loose level lifts not to exceed six inches in thickness before compaction. Make gradual grade changes. Blend slope into level areas. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. Earth fill in embankments, dams, levees, channel plugs, and other structures designed to restrain the movement of water shall be placed so as to meet the following additional requirements: a. The distribution of materials throughout each zone shall be essentially uniform and the fill shall be free from lenses, pockets, streaks, or layers of material differing substantially in texture or gradation from the surrounding materials. b. Backfill areas to contours and elevations with unfrozen materials. Do not backfill over porous, frozen, or spongy subgrade surfaces. Employ a placement method that does not disturb or damage other work. Place backfill and fill in loose level lifts not to exceed six inches in thickness before compaction. Make gradual grade changes. Blend slope into level areas. Slope grade minimum 2 inches in 10 feet, unless noted otherwise. c. If the surface of any layer becomes too hard and smooth for proper bond with the succeeding layer, it shall be scarified parallel to the axis of the fill to a depth of not less than 2 inches before the next layer is placed. d. The top surfaces of embankments shall be maintained approximately level during construction, except that a crown or cross-slope of not less than 2% shall be maintained to insure effective drainage, and except as otherwise specified for drain fill zones. If the Drawings or Specifications require, or the Engineer directs, that fill be placed at a higher level in one part of an embankment than another, the top surface of each part shall be maintained as specified above. e. Dams and other embankments shall be constructed in continuous layers from abutment to abutment except where openings to facilitate construction or to allow the passage of stream flow during construction are specifically authorized in the Contract. - - f.- --Embankments built at different levels as-described under-- -- SECTION 6.6-d or -e above shall be constructed so that the slope of the bonding surfaces between embankment in place and embankment to be placed is not steeper than 2 feet horizontal to 1 foot vertical. In areas where existing embankment is to be flattened, topsoil shall be removed as described in SECTION 5.5 (Excavating). New embankment material shall be benched into existing slope as shown on the plans. Short bench levels shall be formed to a slope of 2H:1 V or flatter, based on existing slope conditions as determined by the Engineer at the time of Compact subgrade to density requirements for subsequent backfill construction. Benching shall be constructed in such a fashion as materials. Cut out soft areas of subgrade not capable of compaction in to inhibit the formation of preferential planes of slope failure. The place. Backfill with ordinary fill material and compact to density equal bonding surface of the embankment in place shall be stripped of to or greater than requirements for subsequent fill material. all loose material, and shall be scarified, moistened and recompacted when the new fill is placed against it as needed to insure a good bond with the new fill and to obtain the specified moisture content and density in the junction of the in-place and S&EC Project No. 9296.1) 1 Page 6 Technical Specifications ' Connell Stream Restoration July 2005 ' new fill. Any variation to this method of tying new fill into the existing embankment shall be determined in the field at time of SECTION 7 - CHANNEL PROTECTIVE LININGS AND IN- construction by the Engineer. STREAM STRUCTURES Independent testing laboratory (SECTION 3 - Quality Control) shall 7.1 SECTION INCLUDES monitor backfill and fill placement. In-place density tests shall be performed at least every two feet in elevation within the fill or backfill Temporary and permanent channel erosion protective linings and in- and within the top one foot of fill or backfill where the higher density stream rock and log structures. requirement applies. If tests indicate backfill or fill material does not meet specified requirements, remove, replace, and retest backfill or fill. 7.2 MEASUREMENT AND PAYMENT i 6.7 COMPACTION AND QUALITY CONTROL See SPECIAL CONTRACT PROVISIONS For backfilling of old stream channel, maintain moisture content of 73 REFERENCES backfill and fill to within two percent of the optimum moisture content by ASTM D698 for the particular soil being placed. Compact to greater The following specifications and methods form a part of this than or equal to 95 percent of the maximum dry density by ASTM specification: D698 for the particular soil being placed. Lift thickness shall not exceed 6". ASTM C88 - Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate For backfill around existing concrete structures (both precast and cast- in place), maintain moisture content of backfill and fill to within two ASTM C127 - Standard Test Method for Specific Gravity and percent of the optimum moisture content by ASTM D698 for the Absorption of Coarse Aggregate particular soil being placed. Compact to greater than or equal to 95 percent of the maximum dry density by ASTM D698 for the particular NCDOT - Standard Specifications for Roads and Structures. soil being placed. Lift thickness shall not exceed 6" and shall be placed uniformly around the entire outside edge of the structure so as not to When the specifications or drawings differ from the requirements of the create a non-uniform soil load condition. above-referenced documents, the more stringent requirements shall apply. 6.8 PROTECTION OF FINISHED WORK ' 7.4 GENERAL Protect finished work. Reshape and re-compact fills subjected to vehicular traffic or damaged by erosion. A Channel Protective Lining has been selected along channel banks. In-stream structures will be installed to create a more natural channel 6.9 TOLERANCES profile for use in the stream. Materials to be used in Channel Protective Linings and the in-stream structures are specified in this Top surface of channel protection lining (where applicable): Plus or section. minus one inch from required elevations. Channel erosion protection linings shall be constructed of the materials Top surface of fill, backfill, and topsoil: Plus or minus one inch from specified in this section and as shown on the drawings. Linings shall required elevations. be laid true to the grade shown on the drawings. Linings shall make a ' smooth interface with the surrounding grade. Any portion of the lining Top surface of floodplain (where applicable): Plus or minus one inch which has its grade or surface disturbed after placement shall be from required elevations. repaired. Any portion thereof already in place which is found to be defective or damaged shall be repaired or replaced, as directed by the ' END OF SECTION Engineer, without additional cost to the Owner. The in-stream structures shall be constructed of the materials specified in this section and as shown-on the drawings.-Any portion of the ------ structure which is disturbed after placement shall be repaired. Any portion of the structure found to be defective or damaged shall the repaired or replaced, and directed by the Engineer, without additional ' cost to the Owner. 7.5 MATERIALS Materials include excelsior and coir fiber matting manufactured ` especially for erosion control, wire staples, wooden construction stakes, nonwoven geotextile, logs, boulders, NCDOT Coarse Aggregate Size #57, NCDOT Class A Erosion Control Stone, NCDOT Class B Erosion Control Stone, NCDOT Class 1 Rip Rap (RipRap), and NCDOT Class 2 Rip Rap (RipRap). Matting for erosion control in areas other than streambanks with mild ' slopes shall be excelsior matting. Excelsior matting shall consist of a S&EC Project No. 9296.13 1 Page 7 Technical Specifications ' Connell Stream Restoration July 2005 machine produced mat of curled wood excelsior a minimum of 47 inches in width. The mat shall weigh 0.975 pounds per square yard with a tolerance of plus or minus 10 percent. At least 80 percent of the individual excelsior fibers shall be 6 inches or more in length. The excelsior fibers shall be evenly distributed over the entire area of the blanket. One side of the excelsior matting shall be covered with an extruded plastic mesh. The mesh size for the plastic shall be a maximum of I" x I" square. Matting for erosion control shall not be dyed, bleached, or otherwise treated in a manner that will result in toxicity to vegetation. Other acceptable material manufactured especially for erosion control may be used when approved by the Engineer in writing before being used. Erosion control matting for streambanks shall be CF 7 coir matting. Matting shall be 100% coir fiber. Minimum specifications for coir matting as follows: Weight 20.6 oz/yd' (700 g/m') ASTM-D3776 Thickness 6.34 mm Water Velocity 10 ft/s Grab/Elongation (Dry) 115.81bs/23.9% MD ASTM-134594 54. 1 lbs/33.5% XD Manning's n 0.0294 Max Shear Stress 4.46 lb/ft2 Wire staples shall be machine made of No. I 1 gage (0.091" diameter) new carbon steel wire formed into a "U' shape. The size when formed shall be 18" in length with a throat of not less than 1" in width. Wooden construction stakes shall be of hardwood, cut from sound solid trees and free from defects that would impair the strength of the stake. Stakes shall be a minimum of three feet long and a maximum of four feet long and shall contain no unsound knots. One end shall be cut to provide a point; the opposite end shall be cut square. Either round or square stakes may be used. Round stakes shall be straight and a minimum of two (2) inches in diameter. Square stakes may be used provided that the minimum dimension in either direction is one and one-half (1.5) inches. Stakes shall be cut with a''/z" deep notch 5" from the top of the stake. The stake shall not deviate more than one inch at any point from a straightedge held longitudinally along the piece. Nonwoven Geotextile: Geotextile shall be a nonwoven fabric with a minimum weight of 6 ounces per square yard (ASTM D3776), a minimum grabstrength in eitherdirection of 180 pounds (ASTM - D4632), a minimum puncture resistance of (ASTM D4833) of 85 pounds, and permeability of (ASTM D4491) greater than 0.2 cm/sec. Fabric meeting these Specifications shall still be subject to approval or rejection by the Engineer. At the time of installation, the fabric will be rejected if it has defects, rips, holes, flaws, deterioration, or damage incurred during the manufacture, transportation, or storage. NCDOT Coarse Aggregate Size #57: Shall conform to gradation requirements of Table 1005-1, NCDOT Specifications. NCDOT Class A Erosion Control Stone: 2 to 6-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards (No more than 5% of the material fumished can be less than the minimum size specified, nor more than 10% of the material can exceed the maximum size specified). Concrete rubble shall not be used. NCDOT Class B Erosion Control Stone: 5 to 12-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards (No more than 5% of the material furnished can be less than the minimum size specified, nor more than 10% of the material can exceed the maximum size specified). Concrete rubble shall not be used. NCDOT Class 1 Rip Rap (RipRap): 5 to 17-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards. The stone shall vary in weight from 5 to 200 pounds with 30% weighing a minimum of 60 pounds each and 10% weighing a minimum of 15 pounds each. (No more than 5% of the material furnished can be less than the minimum size specified, nor can more than 10% of the material exceed the maximum size specified). The rock fragments shall be angular to subrounded in shape. Concrete rubble shall not be used. NCDOT Class 2 Rip Rap (RipRap): 9 to 23-inch, widely graded, durable, crushed stone conforming to applicable NCDOT standards. The stone shall vary in weight from 25 to 250 pounds and 60% shall weigh a minimum of 100 pounds each. (No more than 5% of the material furnished can be less than the minimum size specified, nor can more than 10% of the material exceed the maximum size specified). The rock fragments shall be angular to subrounded in shape. Concrete rubble shall not be used. Boulders: Boulders of approximate dimension 4' x 3' x 2' shall be individually picked by contractor from the quarry or the on site stockpile for use in in-stream structure construction. Boulders as small as 3' x 2' x 2' may be used; however, they shall not constitute more than 30 % of the total boulders. Boulders shall be relatively flat on either side in the same dimension, preferably the long dimension and must have smooth ends. Logs: Logs shall be hardwood with entire root mass intact and attached to log. Branches shall be removed, and the log shall have a uniform diameter over its length. Vane logs shall be a minimum of 15 feet long with a diameter of 12 inches to 18 inches. Anchor logs shall be a minimum of 10 feet long with a diameter of 12 inches to 18 inches. 7.6 IN-STREAM STRUCTURES The work covered by this section consists of the construction of in- stream structures including rock cross vanes (with or without rock steps) and rock or log j-hooks (with or without rock steps). The quantity of in-stream structures to be constructed will be affected by actual conditions that occur during the construction of the project. The type and quantity of structures may be increased or decreased at the direction of the Engineer.-Such variations in quantity will not be- considered as alterations in the details of construction or a change of character of the work. A tracked hydraulic excavator with a thumb of sufficient size to move specified boulders is required for this item. Precise placement of structures will be determined during construction by the Engineer and may not reflect the construction drawings. In-stream structures installed must be inspected and approved by the Engineer. Excavation " for the purpose of installing structures is incidental and is covered by this line item. The excavation of the subgrade and installation of the structure will be consecutive and continuous. Once the installation procedure has initiated it will be completed before the end of the workday. Any incidental/accidental discharge of sediment accumulation as a result of the installation procedure will be removed or integrated into the S&EC Project No. 9296.131 Page 8 Technical Specifications Connell Stream Restoration July 2005 designed bedform. Excavation shall terminate at bedrock if contacted prior to the design grade. Bedrock will be excavated only if it is determined to be rippable and necessary by the Engineer. D 11 r Grade area where structures are to be constructed. Surface shall be free of obstructions, debris, and pockets of soft or low density material. Unless otherwise directed by the Engineer, the stone shall be placed on the slope and/or angle as indicated on the plans. The stone shall be graded so that the smaller stones are uniformly distributed throughout the mass. The Contractor may place the stone by mechanical methods, augmented by hand placing where necessary, provided that when the rip rap is completed, it forms a properly graded, dense, neat layer of stone. The completed rip rap shall be at least the thickness indicated on the plans. Drop height shall be not more than one foot. Place rock cross vanes and j-hooks (and rock sections of log j-hook) as shown in Drawings. Footer rocks shall be installed to define shape of in-stream rock structures, and the arms of in-stream log j-hooks. Footer rocks shall be installed such that their long dimension is oriented in the direction of flow. No gaps shall be left between footer rocks. Minimum footer rock depth below the proposed ground surface of the stream bed shall be 4 feet. Rock sills shall extend a minimum of 3 feet beyond bankfull (perpendicular to stream flow) as indicated on plans. Geotextile shall be placed over structures and backfilled with aggregate as shown on plans. Log vanes shall be placed on top of footer rocks along an anchor log as shown on plans. The upstream end of the log shall be buried and pinned between a boulder and a footer rock. Geotextile shall be nailed to the upstream side of the log and backfilled with aggregate as shown on plans. The quantity of cross-vanes and j-hook vanes to be paid for will be determined by the actual number of structures installed during the construction process. Cross vanes and j-hook vanes will be paid for per individual installed, and includes the handling and transportation of logs and boulders, integration of nonwoven filter fabric, backfill of selected aggregate, and fine grading. The quantities of stone including the boulders utilized should not be priced under this item of work. 7.7 CHANNEL PROTECTIVE LININGS Grade area to be lined. Surface shall be free of obstructions, debris, and pockets of soft or low density material. The rock weir structures shall be completed prior to installation of the channel protective linings. Cover area with stockpiled topsoil to a depth of not less than 4 inches. Final grade with topsoil shall be as shown on drawings. Topsoil shall be prepared with fertilizer and lime, and seeded as described in Section 10 (Permanent Seeding) of these specifications. Install CF-7 erosion control matting perpendicular to the axis of the stream. The matting shall be laid smooth and free from tension, stress, folds, wrinkles or creases. Horizontal overlaps shall be a minimum of 12 inches with the upper matting overlapping the lower matting. Vertical overlaps in matting shall be a minimum of 12 inches with the upstream matting overlapping the downstream matting. The top (crest) edge of the matting shall be anchored in trench at least 12 inches deep as shown on plans to prevent undercutting of the matting. Trench should be located a minimum of 12 inches from the top of bank, and shall not alter channel or floodplain grade. Matting END OF SECTION S&EC Project No. 9296.1) 1 Page 9 Technical Specifications Connell Stream Restoration July 2005 trench and Eco-StakesO shall be installed as shown on plans. Matting shall be anchored utilizing Eco-stake® brand stakes installed not more than 3 feet apart (3' on centers) and staggered, with a minimum of 3 stakes per square yard of matting over the entire lined area. 24-inch Eco-stakes® shall be used along the toe of the channel and 12-inch stakes shall be used within the field and top edge of the matting as detailed on the construction plans. Along all laps (both vertical and horizontal) in the matting, install a common row of staples at the seam, installing staples on 1 foots (12 inch) centers. Along the toe, 24 inch Eco-Stakes® shall be spaced not more than 2 feet All stakes shall be driven perpendicular to the axis of the stream as shown in plans. Care shall be taken to avoid damage to matting material. In the event that the matting is displaced or damaged during installation, the matting shall be repositioned or replaced. This will be done at no additional cost to the Owner. 7.8 SLOPE PROTECTION Grade area to be lined. Surface shall be free of obstructions, debris, and pockets of soft or low density material. Cover area with stockpiled topsoil to a depth of not less than 4 inches. Final grade with topsoil shall be as shown on drawings. Topsoil shall be prepared with fertilizer and lime, and seeded as described in Section 10 (Permanent Seeding) of these specifications. Install excelsior matting perpendicular to slope. Matting shall be unrolled with netting material on top and blanket material in contact with the soil. (Note: some excelsior matting has netting on both sides.) The matting shall be laid smooth and free from tension, stress, folds, wrinkles or creases. Horizontal overlaps shall be a minimum of 12 inches with the upper matting overlapping the lower matting. Vertical overlaps in matting shall be a minimum of 12 inches. The top (crest) and bottom (toe) edges of the matting shall be anchored in trench at least 12 inches deep as shown on plans to prevent undercutting of the matting. Matting trench and wire staples shall be d constructed and installed as shown on plans. Wire staples shall be installed not more than 3 feet apart (3' on centers) and staggered, with a minimum of 3 stakes per square yard of matting over the entire lined area. Staples shall be driven perpendicular to the soil surface. Staples shall be driven flush with soil surface to reduce potential for movement of the erosion control matting. Staples shall be installed in parallel rows on 3' centers and in trenches at the top and bottom of the slope as shown on drawings. Along all laps (both vertical and horizontal) in the matting, install a common row of staples at the seam, installing staples on lfoot (12 inch) centers. All standard anchoring staples shall be 18 ------inches in length.-Staples shall be driven in with a wooden mallet Care--- shall be taken to avoid damage to matting material. In the event that the matting is displaced or damaged during installation, the matting shall be repositioned or replaced. This will be done at no additional cost to the Owner. SECTION 8 - STREAM BANK PLANTING u r L t C' 8.1 SECTION INCLUDES Provide all necessary equipment and labor to implement planting plan. 8.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 8.3 REFERENCES The following specifications and methods form a part of this specification: NCDOT - Standard Specifications for Roads and Structures. 15 NCAC 2B.200 - Classification of Water Quality Standards Applicable to Surface Waters & Wetlands of North Carolina The Baily Hortorium (1976 MacMillan Publishing Co., Inc.) American Standard for Nursery Stock, latest edition NCDENR - Erosion and Sediment Control Planning and Design Manual When the specifications or drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 8.4 GENERAL All plants shall be as called for by these specifications. Live stakes shall be used for all plant species. Botanical names referred to in the plans are taken from "Hortus Third", the Baily Hortorium (1976 MacMillan Publishing Co., Inc.). All plants delivered shall be true to name. Each plant, or group of the same species, variety, and size of plant, shall be legibly tagged with the name and size of the plant. All plants shall be first-class representatives of their species. Stakes shall be reasonably straight. All plants shall be free from plant diseases and insect pests. All shipments of plants shall comply with all nursery inspection and plant quarantine regulations of the states of origin and destination, as well as with Federal regulations governing interstate movement of stock. If stock from other states is used, the stock shall be accompanied by a tag or certificate stating, in effect, that the stock has been inspected and certified by an authorized official of the state of origin as apparently free from injurious plant pests. All plants shall be subject to inspection at any time by the Engineer. Any such inspection before or during planting operations, however shall not be construed as final acceptance of the plants involved. 8.5 PLANT STAKES AND CUTTINGS Plant stakes and cuttings if approved for use by the Engineer shall consist of freshly cut live plants of select stock which has been developed by proper cultural treatment. Stakes and cuttings shall be 3/8" to %z" diameter and between 12 and 18 inches long. They shall be carefully cut from mother-stock plantings. Plant materials shall be packaged, transported, and handled in a manner that will prevent injury, drying out, or freezing. 8.6 PLANT SUBSTITUTION No change in the specified plants (species, variety, size, caliper, furnish, etc.) will be made without written approval of the Engineer. All requests by the Contractor for substitutions shall be presented in writing and shall include a listing of the sources which have been contacted in an attempt to secure the specified plant material. Requests for substitutions shall include botanical name, common name, size, caliper, and furnish description of the proposed substitute. No increase in compensation will be made to the Contractor as a result of the use of the approved substitute plants. 8.7 PLANTING PREPARATION In areas where stream restoration will be implemented, preparation for restoration planting operations shall be as described in SECTION 7 (Channel Protective Linings) of these specifications. Where plant stakes and plant cuttings shall be planted through the Channel Protective Lining, holes shall be made by neatly punching a hole in the matting with a dibble bar, (a heavy metal tool with a blade and a foot petal). The dimensions of the hole shall not exceed 3" in any direction, taking care not to damage the surrounding matting. 8.8 STREAM BANK PLANTING Where plant stakes and plant cuttings shall be planted, they shall be installed at a 45 to 60 degree angle in the direction of stream flow. The buds of stakes and plant cuttings should point upward and about 2 inches of wood should be exposed above the ground surface. Tamp the surrounding soil firmly to eliminate air pockets. Where stream bank planting is directed, areas shall be planted with shrub using 3-foot by 3-foot centers as shown on construction drawings. Care should be taken to avoid planting stakes too deep or too shallow, and to avoid damage to stakes during planting. Planting depth should be in accordance with listed references and supplier recommendations. 8.9 PLANTING PERIODS The installation of plant stakes, cuttings, bare root, or container grown plants shall be performed in mid to late winter, between December 1 and March I (best planting period February 1 to March 1) to allow plants to stabilize during the dormant period and set root during-the--- spring. After March 1, only bare root and container grown plants shall be used. 8.10 REMOVAL OF NUISANCE VEGETATION Removal or control of nuisance vegetation shall be performed for a period of 90 days as necessary to ensure adequate survival of specified plant species. See SPECIAL CONTRACT PROVISIONS. F 8.11 WATER FOR PLANTINGS The Contractor shall install a rain gage and collect daily gage readings at the site. Contractor shall provide initial watering on the day of planting and thereafter at a minimum rate of I inch per week (including rainfall) for a period of 90 days. Water used in the planting or care of vegetation and plantings shall meet the requirements of Class C fresh S&EC Project No. 9296.D1 Page 10 Technical Specifications Connell Stream Restoration July 2005 waters as defined in 15 NAC 2B.200. See SPECIAL CONTRACT PROVISIONS. 8.12 SUBMITTALS Contractor shall submit purchase certificates (or other proof) of all species planted. SECTION 9 - BUFFER PLANTING 9.1 SECTION INCLUDES Provide all necessary equipment and labor to implement planting plan. 9.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 9.3 REFERENCES END OF SECTION The Baily Hortorium (1976 MacMillan Publishing Co., Inc.) American Standard for Nursery Stock, latest edition NCDENR - Erosion and Sediment Control Planning and Design Manual 15 NCAC 2B.200 - Classification of Water Quality Standards Applicable to Surface Waters & Wetlands of North Carolina The following Specifications and methods form a part of this specification: NCDOT - Standard Specifications for Roads and Structures. When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 9.4 GENERAL All plants shall be as called for by these Specifications. Bare rooted plants may be used in lieu of container grown plants provided written approval for such use has been obtained from the Engineer. Grading of plants, type and minimum dimensions of containers shall conform to the Specifications contained in the latest edition of American Standard for Nursery Stock. Plants shall not be cut back from larger sizes to meet sizes called for on the plans. Botanical names referred to in the plans are taken from "Hortus Third", the Baily Hortorium (1976 MacMillan Publishing Co., Inc.). All plants delivered shall be true to name. Each plant, or group of the same species, variety, and size of plant, shall be legibly tagged with the name and size of the plant. All plants shall be first-class representatives of their species. The root system shall be vigorous and well-developed. The branch systems shall be of normal development, and free from disfiguring knots, sun scald --- -- -injuries, abrasions of the bark, dead or-dry-wood, broken terminal growth, or other objectionable disfigurements. Trees shall have reasonably straight stems, and shall be well branched and symmetrical in accordance with their natural habits of growth. All plants shall be free from plant diseases and insect pests. All shipments of plants shall comply with all nursery inspection and plant quarantine regulations of the states of origin and destination, as well as with Federal regulations governing interstate movement of nursery stock. If nursery stock from other states is used, the stock shall be accompanied by a tag or certificate stating, in effect, that the nursery stock has been inspected and certified by an authorized official of the state of origin as apparently free from injurious plant pests. All plants shall be subject to inspection at any time by the Owner, Engineer, or a party to be named by the Owner. Any such inspection before or during planting operations, however shall not be construed as final acceptance of the plants involved. S&EC Project No. 9296.13 1 Page I 1 Technical Specifications Connell Stream Restoration July 2005 9.5 CONTAINER GROWN PLANTS Container grown plants shall be healthy, vigorous, well-rooted, and shall have become established in the container in which they are delivered. These plants shall have been in the established container long enough for the fibrous roots to have developed so that the root mass will retain its shape and hold together when removed from the container. The container shall be a 1 gallon container or larger, sufficiently rigid to firmly hold the soil protecting the root during transporting, handling, and planting, and the soil shall not be allowed to become frozen. 9.6 BARE ROOT PLANTS Bare root plants if approved for use by the Engineer shall have a heavy fibrous root system which has been developed by proper cultural treatment. They shall be dug, packaged, transported, and handled in a manner that will prevent injury to or drying out of the trunks, branches, or roots, or freezing of the roots. 9.7 PLANT STAKES AND CUTTINGS Plant stakes and cuttings if approved for use by the Engineer shall consist of freshly cut live plants of select stock which has been developed by proper cultural treatment. Stakes and cuttings shall be 3/8" to %:" diameter and between 12 and 18 inches long. They shall be carefully cut from mother-stock plantings. Plant materials shall be packaged, transported, and handled in a manner that will prevent injury, drying out, or freezing. 9.8 PLANT SUBSTITUTION No change in the specified plants (species, variety, size, caliper, furnish, etc.) will be made without written approval of the Engineer. All requests by the Contractor for substitutions shall be presented in writing and shall include a listing of the sources which have been contacted in an attempt to secure the specified plant material. Requests for substitutions shall include botanical name, common name, size, caliper, and furnish description of the proposed substitute. No increase in compensation will be made to the Contractor as a result of the use of the approved substitute plants. 9.9 PLANTING PREPARATION In areas where wetland and buffer planting will be implemented, preparation for planting operations shall be as described in SECTION 5.6 (Planting Preparation) of these Specifications. Where container grown plants will be planted, holes made in preparation for tree and shrub species planting shall be as shown on construction plans. Where bare root plants, plant stakes, and plant cuttings shall be planted in holes made by neatly punching a hole into existing grade with a dibble bar, (a heavy metal tool with a blade and a foot petal), the dimensions of the hole shall not exceed 3" in any direction. t 9.10 PLANTING PERIODS The installation of plant stakes, cuttings, bare root, or container grown plants shall be performed in mid to late winter, between December 1 and March 1 (best planting period February 1 to March 1) to allow plants to stabilize during the dormant period and set root during the spring. After March 1, only bare root and container grown plants shall be used. 9.11 REMOVAL OF NUISANCE VEGETATION Removal or control of nuisance vegetation shall be performed for a period of 90 days as necessary to ensure adequate survival of specified plant species. See SPECIAL CONTRACT PROVISIONS. 9.12 WATER FOR PLANTINGS The contractor shall install a rain gage and collect daily gage readings at the site. Contractor shall provide initial watering on the day of planting and thereafter at a minimum rate of I" per week (including rainfall) for a period of 90 days. Water used in the planting or care of vegetation and plantings shall meet the requirements of Class C fresh waters as defined in 15 NAC 2B.200. See SPECIAL CONTRACT PROVISIONS. 9.13 SUBMITTALS Contractor shall submit purchase certificates (or other proof) of all species planted. END OF SECTION S&EC Project No. 9296.DI Page 12 Technical Specifications Connell Stream Restoration July 2005 ' SECTION 10 -PERMANENT SEEDING 10.1 SECTION INCLUDES Permanent seeding for permanent site stabilization. ' 10.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS ' 10.3 REFERENCES The following specifications and methods form a part of this ' specification: NCDENR - Erosion and Sediment Control Planning and Design Manual When the specifications or drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 10.4 GENERAL Permanent seeding shall be executed in temporary lined areas and all ' other areas which are disturbed during construction activities. In areas where Channel Protective Lining will be installed, seedbed preparation and seeding shall be performed prior to the placement of erosion control matting (See SECTION 7 - Channel Protective Linings). 10.5 SEEDBED PREPARATION Complete grading before topsoiling or preparing seedbeds. Avoid creating steep slopes. Excess stockpiled topsoil not used in construction of Channel Protective Lining shall be redistributed across areas to be seeded. Where topsoil is unavailable, seedbeds may be prepared directly on the exposed finished grade or topsoil may be ' imported. If topsoil is used, it should be spread to a uniform depth of four to six ' inches and bonded to the subsoil by loosening with a disc, harrow, or chisel plow. Areas where seeding will occur on exposed finished grade shall be disked or harrowed to ensure soil aeration and to increase the surface roughness prior to planting. Apply lime and fertilizer evenly across seedbed and work into the top 4-6 inches of soil by discing or other suitable means. Operate machinery on the contour. Rework the surface if soil becomes compacted or crusted prior to seeding. Complete seedbed preparation by breaking up large clods and raking into a smooth, uniform surface. Fill in or level depressions that can collect water. be used and erosion control matting shall be placed within 24 hours of seeding. Apply seeds and mulch at the rates indicated below. Areas with Channel Protective Linings: Species Rate Qs/acre Reed Canary Grass 10 (Phalaris arundinacea) Switch Grass 10 (Panicum virgatum) All other disturbed areas: Species Rate (lbs/acre) Reed Canary Grass 25 (Phalaris arundinacea) Switch Grass 25 (Panicum virgatum) Mulch Rate (lbs/acre) Grain Straw 4000 (2 bales per 1000 square feet) or Wood Fiber Mulch 1500 10.7 SEEDING DATES Seeding dates given in these seeding specifications have the best probability of success. Best Possible Late winter 15 Feb-15 Mar 1 Dec-15 Mar. Seeding shall be completed within the "possible" range of dates. 10.8 SOIL AMENDMENTS Apply lime and fertilizer according to soil tests, or apply 2 tons/acre (4,000 lb/acre) ground agricultural limestone and 2,8001b/acre 10-10- 10 fertilizer. 10.9 MULCH Apply grain straw, or equivalent cover of another suitable mulching material as described above. Anchor mulch by roving or netting. Netting shall be used on slopes steeper than 2H:1 V. END OF SECTION 10.6 SEEDING Apply permanent seeding to seedbed after preparation is complete. Use certified seed for permanent seeding whenever possible. Certified seed is inspected by the North Carolina Crop Improvement Association. It meets published North Carolina Standards and should bear an official "Certified Seed" label. Broadcast seed into a freshly loosened seedbed that has not been settled by rainfall. Mulch must be used on slopes 4H:1 V or steeper and in areas when concentrated water may flow. Anchor mulch with netting in areas subject to concentrated flow. In areas where Channel Protective Lining will be installed, no mulch shall g. S&EC Project No. 9296.131 Page 13 Technical Specifications Connell Stream Restoration July 2005 SECTION II - SEDIMENT & EROSION CONTROL 11.1 SECTION INCLUDES Installation of temporary sediment and erosion control measures to include installation of silt fence and temporary seeding measures. The Contractor shall maintain these measures to ensure proper structure function and vigorous temporary vegetative cover during construction. 11.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 11.3 REFERENCES The following Specifications and methods form a part of this specification: ASTM D4355 - Standard Test Method for Deterioration of Geotextiles from Exposure to Ultraviolet Light and Water (Xenon-Arc Type Apparatus) ASTM D4632 - Standard Test Method for Grab Breaking Load and Elongation of Geotextiles ASTM D4751 - Standard Test Method for Detennining Apparent Opening Size of a Geotextile NCDENR - Erosion and Sediment Control Planning and Design Manual When the Specifications or Drawings differ from the requirements of the above-referenced documents, the more stringent requirements shall apply. 11.4 MATERIALS Silt Fence: Silt fence shall have steel posts, woven wire fabric, and filter fabric. The steel post shall have a minimum length of 5' and minimum width of 13/4". The steel posts shall have projections for fastening the wire to the fence. The woven wire fabric shall be at lest 32 inches high, and shall have at least 6 horizontal wires. Vertical wires shall be spaced a maximum of 12 inches apart. The top and bottom wires shall be at least 10 gauge. All other wires shall be at least 12'/2 gauge. The silt fence filter fabric shall meet the following minimum criteria: Grab Tensile Strength 100 lbs. - -- - - --Grab Tensile Elongation - - 15% - ' UV Resistance 70% Apparent Opening Size (AOS) 20 (US Sieve) 11.5 SILT FENCE If possible, the filter fabric shall be cut from a continuous roll to avoid the use of joints. When joints are necessary, securely fasten the filter cloth only at a support with overlap to the next post. Silt fences shall be inspected weekly and after each significant storm (1 inch in 24 hrs.). Any required repairs shall be made immediately. Sediment shall be removed when it reaches 1/3 height of the fence or 9 inches maximum. Dispose of the sediment in the designated disposal area. 11.6 PUMP AROUND OPERATIONS The work covered by this item includes: providing, installing, maintaining, and removing all equipment and materials associated with the pumping of channel flow around work areas and dewatering zones during construction. The Contractor shall utilize the specified and appropriately sized pumps to convey the diversion of water flow away from the work area without creating a flood hazard or scour. The Contractor is responsible for determining (based on the direction of the Engineer) the location of coffer dams, pumps, discharge hose route, stilling basins, splash pads, and period of operation prior to the initiation of any pumping. An attempt will be made to complete all grading, channel shaping, in-stream structure construction, and stabilization for each section within one day. If work for any particular section cannot be completed in one day, a 24-hour pumping operation will be set up and maintained to facilitate the construction schedule. Bypass Pumn The pump used to convey the stream flow around the work area during construction should be capable of pumping and discharging an estimated 40 gallons per minute. The Contractor is responsible for selecting a properly sized pump. This unit should be a silent and self- priming model with a self-contained fuel tank large enough to facilitate a 24-hour pumping operation. The pump should also be matched with the necessary footage of flexible or ductile hose and appropriately sized fittings. Dewatering Pumn A second pump shall be used to dewater the work area between the dams. The pump must be of sufficient size to dewater the work area and pump that water from the bottom of the work area to the special stilling basin. The pump should be matched with the necessary footage of hose and the required fittings. Special Stilling Basin The special stilling basins are covered in detail under the "Special Stilling Basins" section. __------Tempora?y-Splash Pad - A temporary splash pad shall be used to dissipate energy from the discharge from the bypass pump. Alternatively, check dams may be modified and used for this purpose as determined by the Engineer. The Contractor shall provide all labor, materials, tools and other items necessary to furnish and install the silt fence as shown on the Drawings and specified herein. The silt fence shall be placed following the contours as closely as possible. The ends of the silt fence shall be turned uphill. The posts shall not exceed a spacing of 8 feet. The posts shall be driven into the ground and shall extend above ground as shown on the plans. The filter fabric shall be stapled or wired to each post. The filter fabric shall extend into the ground as shown in the plans. 11.7 SPECIAL STILLING BASINS The work covered by this section consists of furnishing, placing, and removing special stilling basins as directed by the plans and the t. Engineer. The special stilling basins shall be used to filter pumped water during construction. The quantity of special stilling basins may be increased, decreased, or eliminated entirely at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of work. S&EC Project No. 9296.1) 1 Page 14 Technical Specifications Connell Stream Restoration July 2005 The special stilling basins shall be a water permeable fabric bag that traps sand, silt, and fines from the sediment laden water entering. The filter fabric shall meet the requirements of Section 1056 for Type 2 Fabric. The special stilling basin shall be a bag constructed to a minimum size of 10' X 15' made from nonwoven fabric. There shall be a sewn-in 8 inch spout for receiving pump discharge. The bag seam shall be sewn with a double needle machine using a high strength thread. The seams shall have a minimum width strength of 60 lb/in (ASTM D-4884). The fabric used to construct the bag shall be stabilized to provide resistance to ultra-violet degradation and meet the following specifications for flow rates, strength, and permeability: Weight 8 oz/yd (ASTM D-3776) Grab Tensile 200 lb (ASTM D-4632) Puncture 130 lb (ASTM D-4833) Flow Rate 80 gpm/sf (ASTM D-4491) Permittivity 1.5 1/sec (ASTM D4991) UV Resistance 70 % (ASTM D4355) The special stilling basins shall be placed so the incoming water flows through the bag without causing erosion. The bag will rest on Nonwoven Type 2 filter fabric. The contractor will grade the bed to ensure that the filtered water exits at the desired location. The exit location shall be chosen to prevent erosion. The neck or spout of the bag shall be tied tightly to prevent water from exiting the bag without passing through the walls. The special stilling basin shall be disposed of and replaced when it is '/. full of sediment, becomes tom or punctured, or is unable to filter sediment at a reasonable flow rate. Approval from Engineer must be received prior to removal and replacement of special stilling basins. Contractor is responsible for providing the necessary quantity of special stilling basins for the duration of the project. 11.8 TEMPORARY SEEDING The Contractor shall provide all labor, materials, tools, and other items necessary to provide temporary seeding in accordance with State and local Standards. 5-10-10 fertilizer shall be applied to all disturbed areas at a rate of 21 pounds per 1000 square feet (21 lbs./1000 sq.ft.), and mulching shall consist of small grain straw applied a rate of 70 pounds per 1000 square feet (70lbs./1000sq.ft.). Mulch shall be anchored by roving or netting. END OF SECTION Areas where no substantial or significant progress is made for more than 15 days shall be temporarily seeded as shown on the Drawings and specified herein. All areas must be seeded, mulched, and anchored unless written approval is granted by the Owner. Incidental grading --shall not constitute substantial or significant progress in construction- -- --- - ---- activity. Seeding and mulching shall be done immediately following construction. All disturbed areas shall be dressed to a depth of 8 inches. The top 3 inches shall be pulverized to provide a uniform seedbed. ' Agricultural lime shall be applied at a rate of 95 pounds per 1000 square feet (95 lbs. /1000 sq.ft.) immediately before plowing. Grass seed shall be applied at the following rate: ' Tyne Dates Possible Rate Rye (Grain) Aug. 15 - Nov. 1 120 lbs./ac. Browntop Aug. 15 - Nov. 1 35 lbs./ac. ' Millet S&EC Project No. 9296.D1 Page 15 Technical Specifications ' Connell Stream Restoration July 2005 SECTION 12 - SITE MAINTENANCE 12.1 SECTION INCLUDES Site maintenance to ensure vigorous vegetative cover, stable channel lining, and durability of the work. 12.2 MEASUREMENT AND PAYMENT See SPECIAL CONTRACT PROVISIONS 12.3 EXECUTION Contractor shall revisit the site as required in the special contract provisions to inspect the condition of the project site. Areas of erosion, settlement, poor vegetative cover, and displaced coir or excelsior materials or in-stream structures, shall be repaired. Site visits shall be coordinated with Owner. Erosion areas shall be filled and reseeded in accordance with Section 10 - Permanent Seeding. Areas of poor vegetative cover shall be reseeded and refertilized only. Displaced, damaged, or dead shrub species shall be removed, and replanted in accordance with Sections 8 & 9 - Stream Bank Planting and Buffer Planting. Displaced channel lining materials shall be recovered (if possible) and replaced, or replaced with new channel lining materials to the design line and grade. END OF SECTION i. S&EC Project No. 9296.131 Connell Stream Restoration Page 16 Technical Specifications July 2005 z n ? n d ? a r- ? ? C o H ''' 0 N rp C. - O C. ( 1.71 (D M N ? rt O r; N 0 0 N C31 p ? 13 a C ~ O a r- F,_ rt 0 o u N (D rn O W to '.L7 N fD lp M N 'D d ? N 0 O (D d w rt (D -J i? O J m j N a + O N m ? 1 . o a ON cn z o n o O (D Ui o J Q -? N n m C) m >C O O X X ?r m ,n r' ul o p R ?' O (D N O F ao m O Z c m n r n O Z N C 1 a a a 0 In K In N N y N O O o O J O p G J o rT O W O R O Ul W Ul - 3 z N oT~ 3 - ~ 0 N o N ' u~f~ .N ~ BANK RIGHT BANK LEFT BANK aQ • RIGHT BANK I/3) BKFWIDTH " " w ~ (I /3) BKF WIDTH GLASS 'A" OR "B° ( CLASS A OR B AGGRPGATESTONE z ~ AGGREGATE STONE p o o~ ~ BANKFULL STAGE ~ ~ P~ FOOTER ~ ? p FLOW--? ~~0 OCKS z m ~ R 0 o Q - ~ ~ ILE FABRIC ~ ~ ~ °L 20.30° 20°_30~ 20-30 20-30 GEOTEXT STREAM CHANNEL BED W ~ p GEOTEXTILE FABRIC STEP Q- ~ 6EOTIXTILE FABRIC O O ~ ROCKS ~ ~ ~ SCOUR POOL ~ W Q J~ Z N J w W~ > OG STEP Z ~ OCK STEP Z W Z - PROFILE p ~ SCOUR SCOUR U ~ 0 ~ POOL POOL ~ U ~ N ~ U ~ ~ 0 F- N PLAN J PLA - Q U ~v E ii CROSS ROCK VANE WITH STEP POOL DETAIL r (NOT TO SCALE) ~ a~ SHRUBS ~ SPECIES COMMON NAME TOTALM SIZE REMARKS ~ Q% Sambu:as aredens~s Elderberry 4 I D eve stakes Along streambaik 3' w Cornus amonum Silky dogwood 410 eve stakes Abng streambank BANKFULL BENCH 2' COIR MATTING ~ 8 Sala n~gra Blau willow 410 Eve stakez Abng streambank - o, _ h TOTAL 1230 ( I 11- III~I ( BANKFULL BENCH BASE FLOW 0 - - _ 0 g - II-I III- o - - - V - - ~ - - _ III-I I I=III= _ _ - -III-I - _ I CO STAKE --~II~II- 12E a --III=1 I I -1 I I-~ I I-~ I I=1 I I-~ I" BASE FLOW p - _ _ ~y 24" ECO-STAKE I 12' ECO-STAKE M " I- 111- -11 - - - VIEW ~ o ~ ~ - _ - PROFILE 24 ECO-STAKE IEW III I I- ONT v _ - - - FR ~ - - - III III - = 1= 11= - I-I I I-I I i-I I I- ANGLE-GUT END z • TRENCH TOP OF MATTING TO A ~ -S A INSTALIFD IN ~ PROFILE VIEW • MINIMUM 2 GENTERSAIONGBOTTOM 12 ECO T KES~ LL DEPTH OF AT LEAST 12 ,STAKE USH WITH COIR MATTING ~+~i IN PLACE, 4 BACKFILL TO DESIGN GRADE • MINIMUM OVERLAP AT JOINING BANK FL " ® ~ • LIVE STAKES INSTALLED IN BANK SECTIONS OF COIR MATTING ABOVE BOTTOM ROW OF 24 ECO-STAKES ~ , 8 WITH DEAD-BLOW HAMMER • MINIMUM 24' ECO-STAKFS~ SO SPACED AT a TAL D ALONG TOE OF MATTING • ECO-STAKE • 4/5 OF STAKE IN GROUND INS LE MAXIMUM 3 CENTERS (APPROX.) $ BUDS ORIENTED UPWARDS (Intercept between water surface and banal • 3 CENTERS (APPROX.) ~ a~ • CUT EXPOSED END OF UVE STAKI: ~~..yy ~ AFTER INSTALLATION IF DAMAGED ~rl DUE TO INSTALLATION O ° (Le. damaged bark, split ends, etc,) f/~ 9 COIR MATTING DETAIL N LIVE STAKE PLANTING DETAIL m T TO SCALE NOT TO SCALE (NO ) NOT FOR ( ) CONSTRUCTION a a N U tl ©2005 501 S Environmental Consultants, PA. AN n hts reserved. 0.517E CONSTRUCTION DRAWINGS FOR em~~~°~° q,~ ~ G.~~d « ~ z s ~ CONNELL PROPERTY , o~~ e STREAM I~ESTOI~ATI ON z~ o ~o o~ PLAN ~ U Q ~ U s~ VICINITY MAP A~, ,~orros~, GUILFORD COUNTY, NC ~ CONTENTS: ~ ~ ENVIRONMENTAL DESIGN FIRM: ~ ~ ~ ~ I . COVER, CONTENTS, ~ VICINITY MAP oFh p ~ ~ SOIL ~ ENVIRONMENTAL 2. EXISTING CONDITIONS ~sr~5~ ^ , ~ ~ CONSULTANTS, PA 3. PROPOSED CONDITIONS I 'f~ p F~ I 101 O Raven Ridge Road 4. PROPOSED CONDITIONS II ~ ~ E Raleigh, NC 27614 5. PROPOSED LONGITUDINAL PROFILE i (919) 846-5900 6. PROPOSED LONGITUDINAL PROFILE II ~ 7. PROPOSED ~ TYPICAL CROSS-SECTIONS ~ ~ PREPARED FOR: 8. STREAM CROSSING DETAIL AND CONSTRUCTION SEQUENCE ~ ~ ~ MR. ROBERT CONNELL, CPA 9• ~ICAL STRUCTURES I S ~ g ~ 6380 Gumwood Road 10. TYPICAL STRUCTURES Ii, LIVE STAKE, ~ COIR MATTING DETAILS ro 0 Oak Ridge, N.C. 2731 O I I . EROSION CONTROL DETAILS I ~ (336) 643-I6I6 12. EROSION CONTROL DETAILS II PRELIMIN NOT FOR CONSTRUGTIOR o z~s say. E~~~.~~~~~ ~M~~r.~~,. Pa a~ ~,~.~e„~. _ 3 _ N EXISTING ~ o IMPAIRED CHANNEL = N ° = 0 ymE~ e N s 2 ~ m EXISTING I MATURE TREES W 0 Z Z CROSS-SECTION o / U ~ LOCATION z m NoRrn p ° z ~ ~ 0 w ~ >L s pp~ ~ 3 0 ~ z ~ ~ w 0 END IMPACT, ~ ~ J ~ Z ~ ~ J INVERT ELEV = z~ ~ ~ 2 PLASTIC PIPE ~ z Q Z? 96.20 W ~ ~ 0~ o UTLET FROM EXISTING ~ 0 N U - POND ~ 0 START IMPACT, 13 ~ j INVERT ELEV. = RGE DIAMETER ~ EXISTING LA _ ~ I z 108.38 DRAINAGE IN CLOSE PROXIMITY w ~ 9 TREES W/ II a ~ DITCH ING CHANNEL w OF EXIST ~ m a , o XS w ® • 4 ~ ~ 8 ~ ~ ~ ~ +n ~ S3 ~ o v X XS2 0 FLOW V ~~iION ~ DI U a„ U ~ e~ N Vi m NOTES: U SURVEY PERFORMED BY SPEC ~ I . SITE DATA AS DETERMINED BY LIMITED ENGINEERING z C~ ON FEBRUARY 24, 2005 •u ~ ARE APPROXIMATE, ~ a 2, ALL LOCATIONS, ELEVATIONS, AND DIMENSIONS p ~ ~ i ~ a .ELEVATIONS ARE BASED ON ASSUMED TBM ELEVATION OF 100.00. 3 b ~ ~ ~ ~ e ° HER SHEETS FOR DIMENSIONS OF CROSS-SECTIONS (XS) ALONG EXISTING ~ ~ ~ 4. SEE OT IMPAIRED STREAM Ct1ANNEL. 0 °s SCALE I " = 60' y „ RGE DIAMETER TREES IDENTIFIED, NUMBERED, AND SHOWN FOR REFERENCE, s 5. EXISTING LA NT PLANS CALL FOR THESE TREES TO REMAIN UNDISTURBED. TREES TO BE CURRE IDENTIFIED PRIOR TO ANY GRADING OPERATIONS, p 60 NDT FOR C0NSTR~JCT~9N ~ 0 V ®2005 Sod 6 Environmental Gonsukants, PA. NI n hts reserved. _ RESTORED o ~ ~ a N NOTES: l ~ ~ m ~ STREAM CHANNEL - m II iN zO I . SITE DATA AS DETERMINED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC ~ ~ m FEBRUARY 24 2005 ~ d N N ON 8 LOG J-HOOK (LJH} NORTH W 2. ALL ELEVATIONS ARE APPROXIMATE AND BASED ON TBM ELEVATION = 100.00. Z ROCK J-HOOK o 12" PLASTIC PIPE ATION of WI STEP (RJHS) ~ - 3. CHANNEL LOCATION AND NUMBER, TYPE, MATERIAL, AND LOC ~ ~ OUTLET FROM POND S IS APPROXIMATE AND MAYBE MODIFIED AT TIME OF CONTRUCTION z m STRUCTURE ~ o Z ~ BY DESIGNER. CROSS ROCK VANE F- O ~ ~ F- (CRV) ~ Y ~ - TIE TO EXISTING 4. STRUCTURES SHOWN ON THIS SHEET ARE NOT TO SCALE. REFER TO DETAIL ~ 6 p MATERIALS ~ Z CHANNEL INVERT SHEETS AND TECHNICAL SPECIFICATIONS FOR ACTUAL DIMENSIONS OF ~ I- CTURES CROSS ROCK VANE ~ N O AND STRU ~ w ~ U W/ STEP (CRVS) ~ p[ z RESTORED ~ ~ EXISTING z ~ W CHANNEL z w z N MATURE TREES ~ ~ !^0 ~ o ~ ALIGNMENT U ~ 0 "J U (L _ - TIE EXISTING DRAINAGE DITCH TO CROSS-SECTION ~ X ~ / o O CHANNEL INVERT ~ LINE WI COIR MATTING xs LOCATION ~ ~ ~ ~ ~ _ ~ X54 _ _ ~ P ~ ~ ~ ~ ~ ~ , - 9 ~ ~ _ a . ~ 3 - ~ 0 8 _ S3 ~ a - - O 7 ~ t ~ 0 0 0 / ~ ~ .X ~ a ~ 1, O N ~ ~ ~ ~ ~ ~ a z 6 ~ o ~ L V v Q ~ N ~q Vi Oz o ~ g ~ . A s B P o w~ a i q GG O O 3 AEI"=30' SC L 0 0 N 30 ~ 0 ~ NOT FOR CONSTRUCTION ®2005 Soil E Enwronmental Consultants, PA, All n hts reserved. NOTES: 0 3 a a ~n~ m PROP05ED CROSSING IMPROVEMENTS FOR BEAVER CREEK ARE AN EXEMPT ACTIVITY o N ~ I , SITE DATA AS DETERMINED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC UNDER 404 REGULATIONS AND WILL BE IMPLEMENTED AT THE OWNER'S DISCRETION, _ "m y ~ pd ~ sit ON FEBRUARY 24, 2005 THESE IMPROVEMENTS ARE NOT A COMPONENT OF THE RESOLUTION OF SITE VIOLATIONS ~ d ~ ~ AND ARE NOT REQUIRED AS A CONDITION OF THE APPROVED 404/401 PERMIT, 2. ALL ELEVATIONS ARE APPROXIMATE AND BASED ON TBM ELEVATION = 100,00'. w Z Z A ION OF ~ _ 3. CHANNEL LOCATION AND NUMBER, TYPE, MATERIAL, AND LOC T IS APPROXIMATE AND AY BE MODIFIED AT TIME OF-CONTRUCTION F STRUCTURES p z w N LOCATION OF PROPOSED 3 ~ p o z BY DESIGNER. O ~ ~ _ ~ BEAVER CREEK oC 0 ~ - 4. STRUCTURES SHOWN ON THIS SHEET ARE NOT TO SCALE. REFER TO DETAIL STREAM CROSSING ~ ~ Y ~ ~ SHEETS AND TECHNICAL SPECIFICATIONS FOR ACTUAL DIMENSIONS OF MATERIALS 0 p g D SEE DETAILS ~ z AND STRUCTURES. ~ N ~ TIE TO EXISTING J w ~ z U ss ROC VANE CHANNEL INVERT w ~ D RESTORED CRO K Z ~ W/ STEP (CRVS) Z Q Z W STREAM CHANNEL APPROX, LOCATION OF PROPOSED ~ cn 0 36 CMP CROSSING ~ 0 0 NORTH F- U ~ 8 LOG J-HOOK L1H EXISTING LENGTH = 20' N o 0 ( ) MATURE TREES " _ ' ~ SCALE I 30 (EXACT LOCATION TO BE ~ 0 0 DETERMINED AT TIME XS ~ ~ ROCK J-HOOK CROSS-SECTION ~ / OF CONSTRUCTION) ~ W/ STEP (RJHS) xs LOCATION 30 15 0 30 ~ ~ 13 ~ ~ 0 ~ gX~ I~^1 1 i 7 N ~`'f 1Y CROSS ROCK VANE ( ~ 12 , ~ u a ~ ~ ~ a ~ v 0 w - 0 ; a w xcJ2 ~ r ~ .__,i i i ~ / ~ ~ ~ i~ ~ / i i i , ~ a _ i ~ _ ~ 0 i ~ i ~ / i ~ ~ / ~ ~ x, , 9 ~ _ ~ , ~ , / ~ i, i~ ~ _ ~ ~ / `.x / a ~ _ ~ i y \ ~ 3 o W $ Z _ Q B ~ A. + + A P h o~ q ~o g AN - Bc P a A a ~ NOT FOR CONSTRUCTION V ®20 5 5otl 6 Environmental Consultants, PA. All ri hts reserved. o~~ ~ N 0 m . _ N - 0 G61E;2 .t~ ~ BED BKF STRUCTURE STRUCTURE BED BKr STRUCTURE STRUCTURE e ~ N'~ BED BKF STRUCTURE STRUCTURE STATION FACET STATION ELEV 1"ION FACET INVERT TYPE STATION N FACET INVE T TYPE INVE T ELEVATION INVERT TYPE INVERT NVE T E ATI I 0 POOL 330.5 I 100.25 i 01.25 POOL W 0.00 108.38 108.95 START 169.72 104.00 05.0 Z 174.92 104.07 104.87 RIFFLE 337.87 100.28 101.08 RIFFLE z _ 3.26 107.89 108.87 RIFFLE ~ w i 03.74 104.54 RIFFLE 349.1 6 100.0 I 100.8 f RIFFLE ~ I 107.59 108.69 RIFFLE 189,35 ~ 0 96 197.48 103.45 104.35 RUN 103.55 RJH 354.47 99.79 100.69 RUN 99.89 RJH Z ~ ~ 24.05 107.59 108.39 RIFFLE 0 9.54 100.54 POOL ~ ~ ~ ~ 15 RUN 107.35 CRV 203.19 103.22 104.22 POOL 36 I.12 9 ~ ~ ~ 34,28 107.25 108. 209.45 103.27 104.07 RIFFLE 367.59 99.59 100.39 RIFFLE W ~ ~ 41.87 106.97 107.97 POOL 0.. Q 222.07 102.98 103.78 PJFFLE 381.68 99.26 100.06 RIFFLE 0 0 ~ z 48.91 107.01 107.81 RIFFLE 228.16 102.73 103.63 RUN 102.83 LJH 388.00 99.01 99.91 RUN ~ p 61.20 106.72 107.52 RIFFLE L ~ w ~ P,~H 234.27 102.49 103.49 POOL 394.46 98.76 99.76 P00 ~ ~ z ~ 68.53 106.45 107.35 RUN 106.55 239.01 102.58 103.38 RIFFLE 401.37 98.80 99.60 RIFFLE ~w ~ U 75.80 106.18 107.18 POOL z ~ ~ z 254.41 102.22 103.02 RIFFLE 413.97 98.50 99,30 RIFFLE Z Q z 0 81.60 106.25 107.05 RIFFLE 261.77 I 0 f .95 102.85 RUN 102.05 LJH 4 19.36 98.28 99.18 RUN 0 ~ ~ p 95.84 105.92 106.72 RIFFLE I O 1.67 102.67 POOL 425.27 98.04 99.04 POOL U F- ~ w 101.28 105.69 106.59 RUN 269.43 N p ~ 277.19 101.69 102.49 RIFFLE 434.09 98.04 98.84 RIFFLE ~ 0 106.06 105.48 106.48 POOL tL 277.98 101.67 102.47 RIFFLE 435.81 98.00 98.80 RIFFLE O 0 112,57 105.52 106.32 RIFFLE RIFFLE ~ ~ 288,92 101.42 102.22 RIFFLE 448.03 97.95 98.75 ] ~ 128.14 105.16 105.96 RIFFLE LJH 29 1.85 101.25 102. ! 5 RUN 453.23 97.83 98.73 RUN 4~ F 134.26 104.92 105.82 RUN 105.02 ~ _ 298.08 101.00 102,00 POOL 458.11 97.72 98.72 POOL a s m 142.13 104.64 105.64 POOL 303.45 101.08 101.88 RIFFLE 466.91 97.58 98.68 RIFFLE n 147.37 104.72 105.52 RIFFLE ~i 317.82 100.74 101.54 RIFFLE 479.21 97.84 98.64 RIFFLE a; ~ 159.71 104.43 105.23 RIFFLE RUN 484.72 97.72 98.62 RUN 163.43 104.24 105.14 RUN 323.83 100.50 101.40 a p w 0 0 a h ~A ~ ~ ~ 0 ~ a CRV V • ~ LJH _ z ~ it LJ N ~ 1 1 - - ~ N Q y 100 H F- CRV Q z 0 ~ II I ~ 'G o W a s 90 o W ~ + 0 5+50 ~ 3+00 3+50 4+00 4+50 5~ 0+50 I +00 I +50 2+00 2+50 0+00 ~ - ~ N ~ A I Co V = CR055 ROCK VANE ~ e PROPOSED BANKFULL CR 9 0 K HOOK N PROP05ED H ~ STRUCTURE 0 CONSTI~CT4~- ooK FOR 0 N U V 9 V X2005 Sod t Environmental Consultants, PA. All n hts reserved. - 3 z N o - _ ~ m N Q dQ1f`~ ..N BED BKF STRUCTURE STRUCTURE BED BKF STRUCTUE= STRUCTURE BED BKF STRUCTURE STRUCTURE ~ d~ 'a " ~ STATION FACET STATION FACET STATION FACET INVERT ELEV TION INVE T TYPE INVE T ELEVATION INVERT TYPE INVE T ELEVATION INVERT E 632.15 97.09 98.09 POOL 785.20 96.74 97.54 RIFFLE J 488.38 97,61 98.61 POOL W z 494.75 97.78 95.58 RJFFLE 639.37 97.27 98.07 RIFFLE 796.10 96.71 97.51 RIFFLE Z o = F E 653.60 97.22 98.02 RIFFLE 802.46 96.58 97.48 RUN ~ w 507.21 97.74 98.54 RI FL _ J 513.14 97.62 98.52 RUN 97.72 CRV 656.22 97.11 98.01 RUN 97.21 LJIi 807.25 96.47 97.47 POOL z m ~ ~0 0 0 520.3 I 97.49 98.49 POOL 66 I.18 96.99 97.99 POOL 813.47 96.64 97.44 RIFFLE ~ ~ ~ 526.95 97.67 98.47 RIFFLE 667.47 97.17 97.97 RIFFLE 524.92 96.60 97.40 RIFFLE w ~ J RIFFLE 678.97 97.13 97.93 RIFFLE 830.85 96.48 97.35 RUN 96.58 LJfi a' s Q 535.68 97.64 98.44 Q 0 - z 542, 16 97.5 I 98.4 I RUN 683.16 97.01 97.9 I RUN 836.2 I 96.36 97.36 POOL ~ p p" W ~ 546.03 97,40 98.40 POOL 690.29 96.88 97.88 POOL 836.37 96.36 97.36 POOL ~ ~ Z ~ 552.20 97,58 98.38 RIFFLE 699.02 97.05 97.85 RIFFLE 549.65 96.51 97,31 RIFFLE w ~ 0 .24 RIFFLE z ~ ~ z 565.77 97.53 98.33 RIFFLE 710.14 97.01 97.8 I RIFFLE 870.3 I 96.44 97 z Q z p 569.76 97.42 98.32 RUN 97.52 LJIi 714.66 96.90 97.80 RUN 88 I . I I 96.30 97.20 RUN 96.40 CRV 0 w ~ U~ 0 ~ 575.34 97.30 98.30 POOL 718.20 96.78 97.78 POOL 889.19 96.17 97.17 POOL ~ w 7.15 RIFFLE N o to 583.68 97.47 98.27 RIFFLE 725.68 96.96 97.76 RIFFLE 894.73 96.35 9 ~ p 588.48 97.45 98.25 RIFFLE 737.50 96.92 97.72 RIFFLE 895.56 96.35 97.15 RIFFLE 0 ~ J p 595.27 97.42 98,22 RIFFLE 744.34 96.79 97.69 RUN 96.89 LJt1 906.41 96.31 97.11 RIFFLE _ ~ .21 RUN 749.61 96.67 97.67 POOL 909.93 96.20 97.10 RUN 96.30 CRV ~ 600. I 0 97.3 I 98 ~ 604.83 97.19 98.19 POOL 756.97 96.85 97.65 RIFFLE 912,69 96.10 97.09 SPOOL a I ~ ~ l 611.59 97.37 98.17 RIFFLE 770.67 96.80 97.60 RIFFLE 915.89 96.18 97.08 RUN .96.28 STEP 623.55 97.32 98.12 RIFFLE 775,20 96.68 97.58 RUN 919.09 96.07 97.07 POOL a a ~ a ~ 628.29 97.21 98.1 I RUN 778.59 96.57 97.57 POOL 922.72 96.25 97.05 RIFFLE a a w ~ . o 0 a ~ ~ i x-.110 ~ ~ l ~ ~ q~ ~ ~ ( j 0 ~ ~ l V ~ ~ ~ I ~ ~ z ~ PROPOSED I j ~ ~ j ~ I ( 36 CMP ~r N N I ; ~ Q - LJh H _ q > Oz W J i ~ = 1 s W 90 q ~ ~ ~ Wa + + 8+00 8+50 9+00 9+50 a 5+50 6+00 6+50 7 00 7 50 ~ _ 6 ~ ~ STATION o ~o s PROPOSED BANKFULL CRV =CROSS ROCK VANE 0 PROP05ED T AL K n o ~ STRUCTURE L C~~I~ FOR CON~PR~i'114~0 3 Nu U U ®2005 Soil 4 Environmental Consultants, PA. All n hts reseNed. _ 3 z N ~ - 15 UPPER SECTION - TYPE B CHANNEL o~° N e e~ ~a ~ r - 7.20 8.46 ~ w - - er,~ BKF z Z 0.77 I.00 ~ Q z ~ W 105 ~ ~ p N o l0 20 30 40 5o TYPICAL RIFFLE- UPPER SECTION TYPICAL POOL- UPPER SECTION ~ ~ ~ cn w ~ ~ I N • BANKFULL CHANNEL WIDTH 7.20 FEET • BANKFULL CHANNEL WIDTH 8.46 FEET a- $ Q CROSS SECTION 4 (STA. 0+ I I) UPPER SECT 0 p 0 - ~ scA~: _ _ • RIFFLE CROSS-SECTION AREA 3.93 SQUARP FEET • POOL CROSS-SECTION AREA 5.93 SQUARE FEET ~ ~ U a- w J • RIFFLE MAX DEPTH 0.77 FEET • POOL MAX DEPTH i ,00 FEET ,J ~ z Q I I 0 • RIFFIF MEAN DEPTH 0.55 FEET • POOL MEAN DEPTH 0.70 FEET W U z ~ ~ zQ Z ~ EXISTING w ~ 0 ~ o ~ CROSS-SECTION U ~ o - - (17 p W - MIDDLE SECTION TYPE C ChANNEL N PROPOSED ~ o o ~ CROSS-SECTION o 6.69 8.77 ~ ~ I00 ~ Ur a !L • erg a o 0 10 20 30 9 1.50 CROSS SECTION 3 (STA. 2+78) UPPER SECTION W ~ l05 TYPICAL RIFFLE- MIDDLE SECTION TYPICAL POOL- MIDDLE SECTION v w • BANKFULL CHANNEL WIDTH 6.69 FEET • BANKFULL CHANNEL WIDTH 8.77 FEET , 0 • RIFFLE CRO55-SECTION AREA 3.88 5OUARE FEET • POOL CROSS-SECTION AREA 9.3 I SQUARE FEET • V1~ ~ e~ _ _ _ _ • RIFFLE MAX DEPTH 0.60 FEET POOL MAX DEPTH 1.50 FEET a • RIFFLE MEAN DEPTH 0.58 FEET • POOL MEAN DEPTH 1.06 FEET 0 V~ .o 95 ~ ~U o l0 20 30 40 50 60 7o LOWER SECTION -TYPE Bc CHANNEL N~ q v~ CROSS SECTION 2 (STA. 5+88) MIDDLE SECTION ~ scat: r = I dt1, ~ ° _ ~ GV .g 7.50 9.00 s Oz ~ erg ~ 105 0.79 ~ 0.99 .G D~ o o q W _ TYPICAL RIFFLE- LOWER SECTION TYPICAL POOL- LOWER SECTION ~ • • BANKFULL CHANNEL WI H 9.00 FEET ~ BANKFULL CHANNEL WIDTH 7.50 FEET ~ 6 ~ • RIFFLE CROSS-SECTION AREA 3.91 SQUARE FEET •POOL CRO55-SECTION AREA 5.02 SQUARE FEET O o z 9 • RIFFLE MAX DEPTH 0.79 FEET • POOL MAX DEPTH 0.99 FEET ~ s 5 • RIFFLE MEAN DEPTH 0.52 FEET • POOL MEAN DEPTH 0.56 FEET N 0 10 20 30 40 50 m CR05S SECTION I (STA. 8+95) LOWER SECTION o L (PROPOSED CMP LOCATION) scat: ~a~, NOT F OR CO NSTRU - CTION X2005 Soil 4 Environmental Gonsuitants, PA. All n hts reserved. STREAM CR0551NG DETAIL o ~ ~ (NOT TO SCALE} ~ ~ 0 IL =N~ N=0 ~~od3a<~ CONGLOMERATE BEAVER o ° BACKFILL CREEK I I ~ J I CONSTRUCTION SEQUENCE W sr Z INSTALL ROCK ~ I I ~ RE ORED Z TRIBUTARY Construction wdl be su ervised by Soil +f Environmental Consultants, PA (SPEC) dell n CROSS VANE - p , g ~ W AS DIRECTED ~ personnel, It will be the Contractors responsibility to have the appropriate equipment ~ =tU O~ and ersonnel on site to im lement the restoration Ian. If conflicts arise it will be th Z m Q Z ~ l ~ ~c`' p ~ p p e 0 0 w i , I~I Contra ~ - ~ ~ ~I ctors responslblllty to notify S+4EC so that adjustments to the plan can be made. ~ ~ ~ ~1 I ill SURFACE FLOW ~ ~ ~ ~ ( W ! I ~E DIVERSION W li d~ ~ I p- U ~li~ / , ~ INi The followin eneral construction se uence wdl be used durin constructlon: ~ 61 / I 9 9 q 9 ~ 00" z~ _ Iy, - ~ ° o o ICI r ~ cf) ~ a~ ° ° ° ~ ~~i ~ I , Using the main site entrance off Gumwood Road, mobilize equipment and a- W c~0 ® ° o° ° f ' ~ U - ii , ~ o ~ ° ° , ~ , , , 4 i,,, ~ materials to the site, mark existing trees to remain, and establish a staging ~ ~ z 01-- iy~,(, ° ° ° ~ ° e ~6 ~ q~° e ° ° , ° , ° ° area as directed by the Owner. to ° ~ U ° ° z~ ~ U~ / 1 ° ° ° op / o o ° 0 ° ° ° 0- ~-1~ ~ / 1 1 0 o C9f e o 0 u~ o Q° o o° J Z W Z LL m fly ~°o° ; o ° ° oo ° ~ °o ~ ~ ~ 2, Install silt fence and ravel check dam immediate/ downstream of the ro osed 0 ~ ~ ~ s f,~ i ~ o - channels terminus, and an additional sdt fencin at the En ineers ancVor ~ U Lu TOP OF li iii' ~ ° ° - ~ Y g g N ~ Z li - \ Contractors discretion. Establish stockpile areas at the direction of the Owner, o ~0 BANK ~ ~ I ~ _ Surr n d ar vii i NU / ~ ou d stockp e eas th s It fence. p Y'~' l , ~ ~ 3, A bypass (from the pond around the work area) or a pump around operation will 1 J STONE APPROACH SECTION ~U' ` i be used to divert water durin construction. The method used wdl be ;i 11 ~ 5: I MAK. SLOPE ON ROAD g e ~ ~ determined b the Contractor based on site conditions at the time of ~ m ; Y constructlon• If the pump around is used: install cofferdam immediately above TIE VANE TO the start Dint of the constructed channel and install um around o eration to f31 ~ TOP OF BANK p p p p ~ w/ RocK SILL discharge into the special stilling balm; install temporary splash pad along the " ed e of the basin if necessa refer to um around o eration notes on NOTES: g ( p p p Erosion Control Details sheet • a I . CONGLOMERATE MIX CLASS A ~ B RIP RAP -MINIMUM DEPTH OF I8 ) ~ , ~ o 2. UNDERCUT FOR STONE PLACEMENT 4. All installed temporary sediment and erosion control measures will be inspected ~ N weekly or after a mayor rainfall event 0.5 inches) by the Contractor, Upon ~ 3. CROSSING MUST BE PLACED IN A RIFFLE AND PERPENDICULAR TO FLOW DIRECTION ~ inspection, any necessary repairs wdl be performed by the Contractor. v 4. EXISTING BEAVER CREEK INVERT TO R;=MAIN THE SAME O V~ 5, Perform stream channel construction at station 0+00 and excavation of the ~ bankfull bench areas ad acent to the ro osed channel's location. Install rock r~ ' J P P t0 and/or to in-stream structures as directed by the En sneer at the time of ~ ~ ~ suRFACE FLOW g g " construction, Line restored stream banks with CF-7 matting and Iwe stake ~ ~ DIVERSION banks as construction roceeds, Fill abandoned channel areas with cut material P ORIGINAL STRFAMBANK Finalize grading in bankfull benchlfloodplain areas. ~ ~!,~,~,~>k„ 0 z 3 ~ ~ ~ " ° ~ A I erosion control seedin measures to disturbed areas to stabilize site. o Po,. 6. Pf Y 9 ~ o ~ ° ~ ° o~~ P . e ~ ,~~j STONE APPROACH SECTION Remove silt fencing, gravel check dam, bypass or cofferdam ~ pump around ~ ~ CONGLOMERATE 5: I MAX. SLOPE ON ROAD e uipment, and any other temporary erosion control devices installed for the ~ ~ ° a MIX CLASS A 4 B X08° ~ ur ores of restoration/channel construction. ,y o RIP RAP - ~44~'°°B"o,~e°°`i~~ p p W ~a I ~TTf-t rr~-rr~ T~ •'~'I~I~I I~II~IL~I~II If=n ~ Plant n arian area as shown in tans and as directed b En sneer at the time of ~ ~ UNDERLAY W1 S• p p Y g O o UNDERCUT CHANNEL NON-WOVEN construction or at the appropriate time of year (at the Engineer's discret(on, ~ o FOR STONE PLACEMENT GEOTEXTILE FABRJC like/ late winter/earl s rin before ° Y Y p 9 m N r o N OT FOR CONSTRUCTION N l~ U ®2005 Soil E Environmental Consultants, PA. NI n hts reserved. o~~ 3 N ° ~ '~~0 j ~m~~ ..N Q ~ ~ a , VANE ARM ~ GEOTEXTILE FABRIC J J BANKFULL STAGE NAI z - - 20°-30° L GRAVEL FILL o FLOW-? VANE ARM ~ 3-7°~° Z ro - STREAM CHANNEL BED ~ OTER ROCK ~ LOG O o ~ - ~ W ~ ~ ANCHOR LOG ~ ~ ] 0 ~ o S000RPOOL GEOTEXTILE FABRIC ~ ~ " U RIGHT BANK EXCAVATION ~ ~ ] FOOTER SCOUR POOL ARFA W f U ROCKS ANCHOR LOG J z F- W ~ Z ~ J ZW Z Q LEFT BANK 0 ~ ~ U PROFILE PLAN CROSS SECTION o _ U u ~ N o 0 J LOG J-1100K DETAIL - (NOT TO SCALE) ~ a 9 m a 113 BKF WIDTH 1l3 BKF WIDTH ~ a X p N A ~ AGGREGAT~STONE ~ ~ ~ w Ir 8 RIGHT BANK h BANKFULL STAGE ~ _,y 3'1 FOOTER a Q FLOW y1.OP ROCKS Q " GEOTEXTILE FABRIC o - V~ 20°-30° a 8 ROCK STEP GEOTEXTILE FABRIC ~ ~ ~ STEP N ~ STREAM CHANNEL BED ~ FOOTER ~ ROCKS ~ LEFT BANK SCOUR POOL PROFILE x FooTER 0 ROCK SCOUR POOL o ~ a D. v q ~ W PLAN b ~a J-1100K WITH STEP POOL DETAIL ~ (NOT TO SCALE) a .Ow s 9 v, 0 N Y T 0 N NOT FOR CONSTRUCTION ° ° ®2005 Sod d Environmental Consultants, PA. All n hts reserved. NOTES: N o€~ 3 - lD o` ~ IL o ~ ~ 0 I . EXCAVATION SHAM BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL. ~ ~ f ~ s = _ 2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORK ARi_AS FROM STREAM FLOW, N T ~ ~ e ~ aQ ~ - P AL STIWNG BASIN 3, THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED IN 5 ECI ONE WORKING DAY. TEMPORARY SPIASH PAD F W DIRECTED AT THE 4, PUMP AROUND SHOULD BE ABLE TO CONVEY MINIMUM OF I CF5 PER MIz OF z (SEE DETAIL, LOCATE TIME OF CONSTRUCTION) DRAINAGE AREA TO SITE UNLESS OTHERWISE SPECIFIED IN SPECIFICATIONS. Z ~ ~ A5 DIRECTED AT THE DEWATERING PUMP F J TIME OF CONSTRUCTION) SEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND Z w m Q 0 0 E- 1- - GRAVEL CHECK TEMPORA Y I . INSTALL SPECIAL STILLING BASINS AT THE DOWNSTREAM END OF THE DESIGNATED ~ ~ W DAM AT CHANNEL PROJECT WORKING AREA. ~ W ~ ~ TERMINUS FLEXIBLE 2. THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE TEMPORARY a- ~ J H05E PIPING THAT WILL CONVEY THE BASE FLOW FROM UPSTREAM OF THE WORK SITE TO THE 0 0 " O EXI5TIN6 WORKING D( E I I V ~ SPECIAL STILLLING BASIN. a, N CHANNEL AP,EA 3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM ~ W U ~ z Z DIVERSION. E TEMPORARY PIPING 4, INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO W ~ O Z ~ U DEWATER THE ENTRAPPED AREA. THE PUMP AND HOSE FORTHIS PURPOSE SHALL BE OF Z W z T I SUFFICIENT SIZE TO DEWATER THE WORK AREA. THIS WATER WILL AL50 FLOW INTO A O ~ ~ Z SPECIAL STILLING BA51N. U I-- U O 5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH E E N - IMPERVIOUS DIKP THE PIAN AND FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE. ~ N A 6. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE O O (LOC TEAS ~ E REMOVAL OP THE IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES PUMPS AND ~ ~ DIRECTED AT _ W PUMP AROUND PUMP-~ THE TIME OF TEMPORARY FLEXIBLE H05E1PIPING STARTING WITH THE DOWNSTREAM DIKE FIRST. ~ CONSTRUCTION) 7, ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BASINS AND STABILIZE tU n OW DISTURBED AREAS A5 SHOWN ON PLANS. a 9 m SPECIAL STILLING BASIN ~ a TYPICAL PUMP AROUND OPERATION a (NOT TO SCALE) EXISTING GROUND a ~ . FILTER FABRIC ~ 15-20 FT $ TEMP Y SEEDING SPECIFICATIONS FOR DRAINAGE ~ ~RAI\ {NON WOVEN) ~1 SPECIAL STILLING BASIN C General Sod Amendments ~ (NOT TO SCALE) Follow recommendations of sod tests or apply 2,000 Ib~lacre Areas where no substantial or significant progress is made for ground agricultural limestone and 750 Ibslacre 10- 10- I 0 ~ ~ more than 15 da should be tem oraril seeded as shown .~yy N Y5 p Y i i r M ~ fert I ze . below. All areas should be seeded, mulched, and tacked. ~ r i Incidental g ad rig shall not constitute substantial or significant Mulch ro ress m construction activity. 5eedi and mulchm shall SANDBAGISTONE BASEFLOW P g ~ g Mulching shall consist of small gram straw applied at a rate z be done immediately following construction. Ail disturbed V ~ o areas shall be dressed to a de th of 8 inches. The of 70 lbs./ 1000 sc{.ft. Mulched areas shall be mechanically WORKING - ~ 'u p ~ tacked m lace or other a roved tackin method . AREA 3 3 inches shall be ulverized to rovide a uniform seedbed, p ( pp 9 ) W P P No asphalt shall be used for tacking. Use Jute, excelsior a Q matting or similar material to cover ex osed areas of FILTER FABRIC FOR DRAINAGE IMPERVIOUS SHEET a P ~g ~ Seeding concentrated flow. (NON-WOVEN) B Seeding Dates Seeding Species Rate (Ibslacre) Maintenance ~ I May I -Aug. 15 German Millet ~o IMPERVIOUS DIKE G ° Au . 15 - Ma I R e ( ram) 60 Inspect and repair mulch frequently. Referti6ze and reseed as ~ g y y g re wired to maintain vi orous tem ra ve etative cover (NOT TO SCALE) q 9 f'o ry 9 during construction, See Cofferdam Detail for Specific Construction Requirements of Temporary Coffer am m ennous i n S 0 N U NOT FOR CONST RUCTION ®2005 Sod 4 Environmental Consultants, PA All n hts reserved. _ 3 ~ N z' mlcw. ~ ~ ~ 0 IL COMPACTED 2~ IMPERVIOUS EARTH OORP N ~ N c O TARP IaMin. Gmf~ -Q ~-N V - TOP fIfVATION OF N6FR°W - _ ~ - 0.5'-I' 4 N m - TOP ELEVATION DF 9A5ffLOW w ..3-_..-_-..- 0.5'-I' MAY. ~ µyl CIASS I PJP-RAP I v M57 WSTONf I ~ ~ ~ ~ Z IX45TING SLOPE Z IXISTING SLOPE ~ 0 ~ RLTfR FABRIG F0.TfR FABRIC U ll 1 CU55 I PJP-RPP NOTES: vARlg vuug IaM" ~ J HT 4 WIDTH DETERMINED BY d ~ z w HEIG Q EXISTING TOPOGRAPHY AND O ~ NOTES: cuss B R1P RAP PAD ~ - ~ SEDIMENT STORAGE REQUIRED. SECTION VIEW SECTION VIEW DaY MIN.m~clw~sls' - TH DETERMINE ~ ~ d W HEIGHT ~ WID W ~ Q KEY RIP RAP INTO THE DAM EXISTING TOPOGRAPHY AND ~ TION. SEDIMENT STORAGE REQUIRED. OPPIONU fiLTER BPb FOR STABILIZA tro eE usEO IF a ~ Ls Q Q 6 J LADEN vnm MENn KEY RIP RAP INTO THE DAM rnscnARMPnPE ~ ~ O PORSTABIl1ZATI0N. ~tOM"' ~ W ~ J~ z ~ ~ Z PLAN VIEW z ~ 0 - ~ IXLSrINGSLOPES Z W Z U 0~ O Z VARIg ~ ~ ~ 0 ~ p - ~ N 6'-I' 6'-I' ~ O O ' ~ < ,5{ter t, ~aV••., CIAfiBR1P RAP PAD ~ m ~s,''`.~:."!'i : G. C; .o Y.P1'ED RIP RAP V:.:y~••: • KBYED R1P RPP MIN. mICKNE55 18' J +•t+'4 m /57 WP5NED STONE v_ M57 WA511fD5TONE G - d j u 3 `m IEW PROFILE VIEW NaN-wovfN PROFILE V GEOTIXfIILPABGC W ~ SECTION VIEW ORARY COFFERDAM q w TEMP SPLASH PAD DETAIL TEMPORARY - E CONFIGURATION o MULTI US ORARY ChECK DAM (NOT TO SCALE) TEMP A E " (NOT TO SC L) ~ ~ (NOT TO SCALE) O ii 0 Steel Post a . i V Mm. 12-1I2 Gauge Woven Wire Palmc " ~ ~ ~ Intermediate Wires Sdt Fence Fabrlc ~ " 9 8' Nox. ~ ~ TT d Min. I 0 Gauge o U Llne Wlres I N Grade i7 I N O x o / P. I ~ , q ~ iv 6 Mm. Cover ~ Over Skirt Y 8 o \ w ~ y0. ~ ~ Anchor Swrt as g ~ . ~ ~ Directed E Ineerl ~ \ ~v ~ ~ ~ ~ 'Designer Q SIDE VIEW o FRONT VIEW g RY SILT FENCE DETAIL - STANDARD TEMPORA NOT TO SCALE) N ( NOT FOR CONSTRUCTION 0 3 N u X2005 Sod E Envvonmental Consultants, PA. All rl hts reserved. a SITE CONSTRUCTION DRAWINGS FOR e~~~~~~° W U CONNELL PROPEPTY ~ ~8 L w o \ L ~N ~ \ J~ z z ~B T TION z~~ o y~ STREAM RES OI~A of ~o s ~ ~ PLAN ~~3~ o~ VICINITY MAP 6 p~„ 6 ,~orro=~, GUILFORD COUNTY, NC ~ CONTENTS: ENVIRONMENTAL DESIGN FIRM: /n~~~~Q~~ I . COVER, CONTENTS, ~ VICINITY MAP U~( SOIL 4 ENVIRONMENTAL 2. EXISTING CONDITIONS li~~ 2 ~ zo ~ CONSULTANTS, PA 3. PROPOSED CONDITIONS I '~'~~Na57rERQ~g05 a I I O I 0 Raven P.idge Road 4. PROPOSED CONDITIONS II a~,A,~Re,~„~, ~ e~ ~ Raleigh, NC 27614 5. PROPOSED LONGITUDINAL PROFILE I ~ ~ (919) 846-5900 6. PROPOSED LONGITUDINAL PROFILE it 7. PROPOSED ~ TYPICAL CROSS-SECTIONS ~ PREPARED FOR: 8. STREAM CROSSING DETAIL AND CONSTRUCTION SEQUENCE w ~ MR. ROBERT CONNELL, CPA 9. TYPICAL STRUCTURES I i ~ 6380 Gumwood Road 10. TYPICAL STRUCTURES II, LIVE STAKE, ~ COIR MATTING DETAILS ~ e Oak Ridge, N.C. 27310 I I . EROSION CONTROL DETAILS I ~ (336) 643- 1616 12. EROSION CONTROL DETAILS II PRELIMINARY ~ NOT FOR CONSTRUCTION m z~~ «E~~ro~~,v~ ta,=~~ra~. PA ~g~, _ 3 o N EXISTING ° ~ IMPAIRED CHANNEL = N P 0 0 ~ms~ o- ~ N ~ m EXISTING I MATURE TREES W 0 Z CROSS-SECTION o U NORTH XS LOCATION z m N ~p o Z ~ ~ 0 W ~ I-- Z O~§ ~ ~ ~ ~ F- Z ~W 0 END IMPACT, ~ ~ J ~ _ z U INVERT ELEV = ° W ~ 2 PLASTIC PIPE z ~ ~ zW z Z T ET FROM EXISTING 96 20 OU L o U ~ O to POND ~ - No START IMPACT, o J INVERT ELEV. = 13 w EXISTING LARGE DIAMETER ~ ~ n 108.38 INAGE 1z - ~ n ~ ~ o DRA TREES W/IN CL05E PROXIMITY ~ d 9 0 , i ~ f1 0 DITC ; Q OF EXISTING ChANNEL ~ ~ p m a a X54 ~ ~ ~ ~~1 z ® q r 4 ~ i ~ ~ , ~ i i $ ~ rA ~ q X53 FI ,fir X52 p I L~Y'~ u GTION V a DIRE ~ ~U ~ n~ qN ~ NOTES: I . SITE DATA AS DETERMINED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC ON FEBRUARY 24, 2005 p z ~ 'u 0 2. ALL LOCATIONS, ELEVATIONS, AND DIMENSIONS ARE APPROXIMATE. M ~ a q ° ON ASSUMED TBM ELEVATION OF 100.00', ~ ~ 3, ELEVATIONS ARE BASED ~ a d~ a 4. SEE OTHER SHEETS FOR DIMEN51ONS OF CROSS-SECTIONS (XS) ALONG EXISTING ~ IMPAIRED STREAM CHANNEL. ~ SCALE i " = 60' p °s E5 IDENTIFIED NUMBERED AND SHOWN FOR REFERENCE. ~ s 5. EXISTING LARGE DIAMETER THE , NS CALL FOR THESE TREES TO REMAIN UNDISTURBED. TREES TO BE CURRENT PLA IDENTIFIED PRIOR TO ANY GRADING OPERATIONS. 60 n L S 0 7 N U NOT FOR CON STRUCTI ON ®2005 Sail t Environmental Consultants, PA. Ali n hts reserved. RESTORED o ~ ~ b cv NOTES: ~ m STREAM CHANNEL m , II . ~ N. - =0 DATA A5 DETERMINED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC y m o ~ ~ m I. SITE P ~ ~ ON FEBRUARY 24, 2005 g LOG J-HOOK (LJH) NORTH w 2. ALL ELEVATIONS ARE APPROXIMATE AND BASED ON TBM ELEVATION = 100.00'. z ROCK J-HOOK o 12" PLASTIC PIPE wJ STEP (RJHS) " - 3. CHANNEL LOCATION AND NUMBER, TYPE, MATERIAL, AND LOCATION OF ~ N OUTLET FROM POND CTURES IS APPROXIMATE AND MAYBE MODIFIED AT TIME OF CONTRUCTION z ~ Z STRU p BY DESIGNER. CROSS ROCK VANE I- 0 a/ ~ I-- (CRV) ~ y ~ - TIE TO EXISTING 4, STRUCTURES SHOWN ON THIS SHEET ARE NOT TO SCALE. REFER TO DETAIL p p ~ ~ SHEETS AND TECHNICAL SPECIFICATIONS FOR ACTUAL DIMENSIONS OF MATERIALS ~ i- Z CHANNEL INVERT CROSS ROCK VANE IL cn O AND STRUCTURES, WJ STEP (CRVS) ~ z U w ~ p RESTORED z ~ ~ w EXESTING z Q z CHANNEL MATURE TREES W ~ ~ ~ 0~ o - O ENT OI o ~ ALIGNM U ~ ~ ~ _ ' TIE EXISTING DRAINAGE DITCH TO CROSS-SECTION N 0 X / o \ ING xs LOCATION ~ \ , O CHANNEL INVERT ~ LINE Wl COIR MATT \ \ O ~ \ \ J_ \ ~ \ ~a-~' - \ d ~ \ ~ O \ - 9 a rs.~_ - 8 ~ ~ 3 - 53 _ p ~ ~ 1, 5 O / , ~ ~ z ~ O 6 ~ g L V $ U ~gg Q 3 ~ ~ aN N Oz •i~ a ~ AN B a P s w~ u w~ N ~ NSTRUCTIO ~ ~ - OT FOR CO ~ jN 0~ m Imo.....,-.,,,...mss - ~ rw o 3 SCALE I 30 ~II 9 0 ~i m 30 15 0 30 ~ n X2005 Sod E Environmental Consultants, PA, All n hts reserved. - 3 N pe~ 0 NOTES• PROPOSED CROSSING IMPROVEMENTS FOR BEAVER CREEK ARE AN EXEMPT ACTIVITY „ II TED AT THE OWNER'S DISCRETION, ~ m L 0 INED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC UNDER 404 REGULATIONS AND WILL BE IMPLEMEN P oa ~ ~ ~ I . SITE DATA AS DETERM THESE IMPROVEMENTS ARE NOT A COMPONENT OF THE RESOLUTION OF 51TE VIOLATIONS d ~ ~ ON FEBRUARY 24, 2005 AND ARE NOT REQUIRED AS A CONDITION OF THE APPROVED 4041401 PERMIT. ~ ASED ON TBM ELEVATION = 100.00', u, Z 2. ALL ELEVATIONS ARE APPROXIMATE AND B z 0 U ND NUMBER TYPE, MATERIAL, AND LOCATION OF z 3. CHANNEL LOCATION A (J') E AND AY BE MODIFIED AT TIME OF CONTRUCTION 3 ~ Z m Z STRUCTURES IS APPROXIMAT LOCATION OF PROPOSED o ~ 0 ~ - BYDESIGNER. ~ ~ I- ~ • BEAVER CREEK ~ ~ - ~ W ~ 5 SHEET ARE NOT TO SCALE. REFER TO DETAIL STREAM CROSSING, a- ~ p 4. STRUCTURES SHOWN ON THI Q 0 SHEETS AND TECHNICAL SPECIFICATIONS FOR ACTUAL DIMENSIONS OF MATERIALS SEE DETAILS oL z w 0 AND STRUCTURES. TIE TO EXISTING ~ ~ Z U CHANNEL INVERT w z~ ~ CROSS ROCK VANE ~ W RESTORED z Q z ~ ~ CHANNEL WJ STEP (CRVS) APPROX. LOCATION OF PROPOSED 0 ~ STREAM p~ U o 0 36 CMP CROSSING I- ~ ~ NORTH - ~ ~ 0 0 EXISTwG LENGTH - 20 ~ 9 LOG J-HOOK (LJH) S ° = 3OI ACT LOCATION TO BE 0 ~ MATURE TREE SCALE I (EX ~ J 0 DETERMINED AT TIME XS ROCK J-HOOK CROSS-SECTION OF CONSTRUCTION) ~ / ~ ~ W/ STEP (RJHS) X5 LOCATION 0 15 0 30 13 ~ ~ 3 0 ~ ~ d ~ _ 1~ _ U.~ Q~ CROSS ROCK VANE ~ ~ I2 v a (cRV) , ~ ~ ~ ^ a ~ / _ _ ~ ~ _ Q ~ ~ u~ ~ ~ a I I ~ ''\~0 r i 7 i Q l~ . X52 r r c~ CO I / ~ ~ / i , a / / ~y 0 ~ ~ - ~ ~ 0 I 0 , _ _ 0,~ ~ ~ ~ 0 S ~ N ~ ~ ~ 1 - ~ i ~ \ ~.~v v~ ~ 0 ~ , ~ i \\x. ~ ~ D~ q a W z ~ _ ~ ~ Q ~ C °s --F' E N N h P w N AN P 9 0 u N A, NOT FOR CON n STRUCTION 0 z ®20 5 Sod 6 Environmental Consultants, PA. All n hts reserved. - 3 3 N o m = ~ oN. N=0 ~mf~ uQ e N BED BKF STRUCTURE STRUCTURE BED BKF STRUCTURE STRUCTURE BED ~`F FACET STRUCTURE STRUCTURE e P STATION FACET E STATION INVE T ELEVATION FACET INVERT TYPE STATION INVERT ELEVATION INVERT TYPE NVE T ELE ATI N INVERT TYP I .38 108.95 START 169.72 104.00 105.00 POOL 330.51 100.25 101.25 POOL W 0.00 08 Z 3.26 107.89 108.87 RIFFLE 174.92 104.07 104.87 RIFFLE 337.87 100.28 I D 1.08 RIFFLE z o - 10.96 107.59 108.69 RIFFLE 189.35. 103.74 104.54 RIFFLE 349.16 100.01 100.81 RIFFLE ~ J FFLE 197.48 103.45 104.35 RUN 103.55 R1H 354.47 99.79 100.69 RUN 99.89 RJH Z ro ~ 24.05 107.59 108.39 RI 361.12 99.54 100.54 POOL ~ ~ ~ V 203.19 103.22 104.22 POOL ~ - ~ 34.28 107.25 108.15 RUN 107.35 CR I 2 I FFLE 367.59 99.59 100.39 RIFFLE ~ ~ ~ 41.87 106.97 107.97 POOL 209.45 03.7 04.07 RI w ~ ~ I 107.81 RIFFLE 222.07 102.98 103.78 KIFFLE 381.68 99.26 100.06 RIFFLE ~ Q 48.9 I 107.0 0 0 ~ z I FLE 228.16 102.73 103.63 RUN 102.b3 LJH 388.00 99.01 99.91 RUN w/ I- p 61.20 106.72 107.52 R F 99.76 POOL a' W ~ 68.53 106.45 107.35 RUN 106.55 RJH 234.27 102.49 103.49 POOL 394.46 98.76 J U ~ I FFLE 401.37 98.80 99.60 RIFFLE ~ z ~ 75.80 106. I S 107.18 POOL 239.01 102.58 03.38 RI w 254.41 102.22 103.02 RIFFLE 4 13.97 98.50 99.30 RIFFLE Z ~ ~ z 81.60 106.25 107.05 RIFFLE Z Q Z 0 15.92 106.72 RIFFLE 261.77 101.95 102.85 RUN f 02.05 LJH 419.36 98.28 99.18 RUN p W ~ 95.84 0 O p 101.28 105.69 106.59 RUN 269.43 I O 1.67 102.67 POOL 425.27 98.04 99.04 POOL U I- U w 27 .19 101.69 (02.49 RIFFLE 434.09 98.04 98.84 RIFFLE ~ O N 106.06 105.45 106.48 POOL 7 0 I FFLE 435.81 98.00 98.80 RJFFLE ~ ~ 112.87 105.52 106.32 RIFFLE 277.98 101.67 02.47 RI 0 0 128.14 105.16 105.96 RIFFLE 258.92 101.42 102.22 RIFFLE 448.03 97.95 95.75 RIFFLE ~ a N 105.02 LJH 291.55 101.25 102.15 RUN 453.23 97.83 98.73 RUN 134.26 104.92 105.62 RU ti ~U n 142.13 104.64 105.64 POOL 298.08 101.00 102.00 POOL 458.11 97.72 95.72 POOL e 9 `m I 104.72 105.52 RIFFLE 303.45 101.06 101.88 RIFFLE 466.91 97.88 98.68 RIFFLE 47 37 FFLE 317.82 100.74 101.54 RIFFLE 479.21 97.84 98.64 RIFFLE a 159.71 104.43 105.23 RI a 323.83 100.50 101.40 RUN 484.72 97.72 98.62 RUN ~ 163.43 104.24 105.14 RUN aw ~ . ~ o 0 h 110 ?n~ 0 CRV _ V o _ ~ LJf1 • ~ Z fZ1 LJ 11 ~ ~ H N ~ O ~ h 100 _ ~ ~ a V CRV Q ~ > o z W 3 a J ~ D. a W ~0 a w ~ ~ ~ a 3+50 4+00 4+50 5+~0 5+50 ~ d 0+00 0+50 I+00 1+50 2+00 2+50 3+00 o'~a Y x~_ Y A ION o T T ~,o s PROPOSED BANKFULL CRV =CROSS ROCK VANE 0 N _ PROPOSED H ' J-H00 o ~ STRUCTURE J- OOK } OR CON m STRUC TION u ®2005 Sod S Environmental Consultants, PA. All n hts reserved. i i o ~ ~ 3 cv ,~fl ~ ~ ~"m~`2 .uNi y 0 "a Qasanl9 BED BKF STRUCTURE STRUCTURE BED BKF STRUCTURE STRUCTURE BED ~`F FACET STRUCTURE STRUCTURE ~ d STATION FACET T .TYPE STATION INVE T ELEVATION FACET INVERT -FyPE STATION INVE T ELEVATION INVE T PE INVERT ELEVATION INVE J 488.38 97.61 98.61 POOL 632.15 97.09 98.09 POOL 785.20 96.74 97.54 RIFFLE W z 494.75 97.78 98.56 RIFFLE 639.37 97.27 98.07 RIFFLE 796.10 96.71 97.51 RIFFLE o 3.60 97.22 98.02 RIFFLE 802.46 96.58 97.48 RUN ~ w 507.21 97.74 98.54 RIFFLE 65 ~ 513.14 97.62 98.52 RUN 97.72 CRV 656.22 97.11 98.01 RUN 97.21 WIi 807.25 96.47 97.47 POOL z m ~0 0 0 520.3 I 97.49 98.49 POOL 66 I.18 96.99 97.99 POOL 8 13.47 96.64 97.44 RIFFLE ~ ~ ~ 526.95 97,67 95.47 RIFFLE 667.47 97.17 97.97 RIFFLE 824.92 96.60 97.40 RIFFLE W ~ ~ 97.13 .9 RIFFLE 830.85 96.48 97.38 RUN 96.55 Wfi _ Q 535.68 97.64 95.44 RIFFLE 678.97 97 3 Q 0 ° z . I 98.41 RUN 683.16 97.01 97.91 RUN 536.2 I 96.36 97.36 POOL ~ ~ p 542.16 97 5 rL W ~ 546.03 97.40 98.40 POOL 690.29 96.88 97.88 POOL 836.37 96.36 97.36 POOL ~ ~ Z RIFFLE 699.02 97.05 97.85 RIFFLE 849.65 96.51 97.31 RIFFLE ~ j ~ U 552.20 97.58 98.38 z ~ ~ z 565.77 97.53 98.33 RIFFLE 7 10.14 97.01 97.81 RIFFLE 870.3 I 96.44 97.24 RIFFLE z Q z o 97.42 98.32 RUN 97.52 LJfi 714.66 96.90 97.80 RUN 881. I I 96.30 97.20 RUN 96.40 CRV ~ ~ ~ J 569.76 7.17 POOL U ~ 0 ~ 575.34 97.30 98.30 POOL 718.20 96.78 97.78 POOL 889.19 96.17 9 N U N 583.68 97.47 98.27 RIFFLE 725.68 96.96 97.76 RIFFLE 894.73 96.35 97.15 RIFFLE ~ Q 737.50 96.92 97.72 RIFFLE 895.56 96.35 97.15 RIFFLE 0 a 588.48 97,45 98.25 RIFFLE ~ o 595.27 97.42 98.22 RIFFLE 744.34 96.79 97.69 RUN 96.89 LJIi 906.41 96.31 97.11 RIFFLE J ~ 749.61 96.67 97.67 POOL 909.93 96.20 97.10 RUN 96.30 CRV 600.10 97.31 98.21 RUN ~ iU 604.83 97.19 98.19 PDOL 756.97 96.85 97.65 RIFFLE 912.69 96.10 97.09 SPOOL a ~ 770.67 96.80 97.60 RIFFLE 915.89 96.18 97.08 RUN 96.28 STEP ~ 611.59 97.37 98.17 RIFFLE .12 RIFFLE 775.20 96.68 97.58 RUN 919,09 96.07 97.07 POOL a I 623.55 97.32 96 a ~ 628.29 97.21 98.1 I RUN 778.59 96.57 97.57 POOL 922.72 96.25 97.05 RIFFLE a w ~ ~ S h ~ j 110 ~ ~ ~ i I I ~ ! 0 ~ ~ ! I I ~ g ~ ~ V ~ ~ ~ I I j I PR0P05ED z I i ~ „ ~ ~ 's I i 36 CMP ~ f N O _ 1 ~ VJ _ 100 -1-- i v I ~ ~ - - I Q _ ~ LJ11 H ~ z ~ 0 W ~ ~ a J ~ ~ o e W ' 90 a ~ ~ 1 W~ g b 5+50 6+00 6+50 7+00 7+50 8+00 8+50 9+00 9+50 ~ ~ ~ ~ STATION c s` PROPOSED BANKFULL CRV = VANE " 0 t PROPOSED Tf1A 0 Y A a N~ I R1~CT~ $ ~ STRUCTURE LOC I lJ+'~+T' pR C NOT F V V ®2005 Sod 6 Environmental Consultants, PA. All n hts reserved. - 3 z N 115 o UPPER SECTION - TYPE B CHANNEL o~- _ zN- N=O o~f~ 8Q G e _ - 7.20 8.46 ~ erg w c17 art z Z 0.77 - I.00 0 O 105 z m W ~o ~ ~ o l0 20 30 40 5o TYPICAL RIFFLE- UPPER SECTION TYPICAL POOL- UPPER SECTION ~ ~ ~ N w ~ N CROSS SECTION 4 (STA. 0+ I I) UPPER SECTION • BANKFULL CHANNEL WIDTH 7.20 FEET • BANKFULL CHANNEL WIDTH 8.46 FEET ~ "s p scnte: r = l an r = l av ~ ~ a ~ ° •RIFFLE GR055-SECTION AREA 3..93 SQUARE FEET • POOL CROSS-SECTION AREA 5.93 SQUARE FEET ~ F- U ~ W • RIFFLE MAX DEPTH 0.77 FEET • POOL MAX DEPTH I.00 FEET J ~ Z Q I I 0 • RIFFLE MEAN DEPTH 0.55 FEET • POOL MEAN DEPTH 0.70 FEET W U z ~ ~ 4- EXISTIN z Q z ~ G 0 ~ o ~ CROSS-SECTION u o ~ U W - MIDDLE SECTION - TYPE C ChANNEL o ~ - PROPOSED ~ p o CROSS-SECTION p 6.69 8.77 ~ ~ 100 ~ F 0-. ~ ~ - 0 10 20 30 9 1.50 CROSS SECTION 3 (STA. 2+78} UPPER SECTION ~ scams: r= lan, I^= lav w 00 a 05 TYPICAL RIFFLE- MIDDLE SECTION TYPICAL POOL- MIDDLE SECTION ~w • BANKFULL CHANNEL WIDTH 6.69 FEET • BANKFUIl CHANNEL WIDTH 8.77 FEET , • RIFFLE CROSS-SECTION AREA 3.88 SQUARE FEET •POOL CR055-SECTION AREA 9.3 I SQUARE FEET BKf _ • RIFFLE MAX DEPTH 0.60 FEET • POOL MAX DEPTH I ,50 FEET - aq • RIFFLE MEAN DEPTH 0.58 FEET • POOL MEAN DEPTH 1.06 FEET O V~ 95 R ~ e V o l0 20 30 40 50 60 7o LOWER SECTION -TYPE Bc Cf1ANNEL N~ qN C OSS SET 2 ~ R C ION (STA. 5+88) MIDDLE SECTION 7.50 9.00 ~ Oz BKF 4 105 0.79 ~ 0.99 ~ o ~a o D. ° q ~ ~ ~ _ TYPICAL RIFFLE- LOWER SECTION TYPICAL POOL- LOWER SECTION ~ a ~ ~ Bh • BANKFULL CHANNEL WIDTH 7.50 FEET • BANKFULL CHANNEL WI H 9.00 FEET d •RIFFLE CRO55-SECTION AREA 3.9 I SQUARE FEET •POOL CR05S-SECTION AREA 5.02 SQUARE FEET ~ 0 0 s 95 • RIFFLE MAX DEPTH 0.79 FEET • POOL MAX DEPTH 0.99 FEET ~ a • RIFFLE MEAN DEPTH 0.52 FEET • POOL MEAN DEPTH 0.56 FEET 0 10 20 30 40 50 CROSS SECTION I (STA. 8+95) LOWER SECTION PROPOSED CMP LOCATIO ~ ~ ( N) pan, NOT 1=0R CONSTRUCTION ®2005 Sod E En~ronmental Consultants, PA. All n hts reserved. STREAM CR0551NG DETAIL - 3 N (NOT TO SCALE) ~ ~ ~ ~ l(! o ~ ~ pN.. 0 CONGLOMERATE BEAVER ~ ~ ~ ~ -N BACKFILL CREEK e~ aQ " ~ I l CONST ~ ~ / RUCTION SEQUENCE INSTALL ROCK ~ I I RESTORED z _ TRIBU z CROSS vANE / TARP Construction will be supervised by Soil ~ Environmental Consultants, PA (SPEC) desl n o AS DIRECTED ~ ' personnel. It w)II be the Contractor's res on i i g " ~ W y ~ ~ p s b Ilty to have the appropriate equipment ~ _ U I o I + I and personnel on site to implement the restoration Ian. If conflicts arise, It will be th Z m Q Z P e , , ~I ~ 0 o Lu I~I ~f Contractors res onsibllit to note SPEC so that ad - ~ rii P Y ustments to the Ian I~l P' I IMI SURFACE FLOW fY J p can be made. ~ II ~l ~ ~ , ~ DIVERSION C~ ~I w ~ II 1 li II II %I~~ ~I~I ~f ill II fl ~l W The following general construction sequence will be used durmg construction: p- ~ ~ 1 00 ° ~ ~ ~ o !!li Usin the mai N Z 0 0 , o 0 0 0 ° ~ ; / I , I . g n site entrance off Gumwood Road, mobilize equipment and tL cf) h ° ° ~ ° ° , ~ . v:, , materials to the 51te mark eXlStin J lL1 U ~O W a , ° o , ° 6 o a ° ° ti, , I ~ g trees to remain, and establish a staging ~ ~ z 0 F- o o a b , ~o ~ o o ° , ° area as directed by the Owner. w ~ ~U I ~ ~ ~ o o/ o oc9r o ®o 0 o a o 0 0~ o~ o oo° 0 ~ z~ ~ ,11 °/oho u e 0°0 ° 0 0 opo o~ o0 0 0 z Q Z 2, install silt fence and gravel check dam Immediately downstream of the ro osed 0 W z ~ ~ a~ °°,o o~ o ,~li, o ° o 0 0 0 p P ~ 6 ~ ~ ° ° ~ - charm ~ 0 Q t17 TOP OF I~~i o o - ~ els terminus, and any additional slit fencing at the Engineers and/or U U wZ BANK ~ ' \ Contractor's discretion. Establish stock de areas at the dmectlon of th N o ~ I ~ _ p e Owner. I.._. 0 ~ J Surround stockpile areas with silt fence. ~ ~ U ~f 0 ~ i~" ' % % / ~l 3• A bypass (from the pond around the work area) ora um around o eration will ~ ~ , ~ ~ ~ STONE APPROACfi SECTION p p p 5: I MAX. SLOPE ON ROAD be used to divert water durmg construction. The method used will be e s~ E determined the Contractor based on site conditl n ~ ~ ~ ; by o s at the time of construction, If the pump around Is used: instal) cofferdam immedlatel above TIE VANE TO Y TOP OF BANK the start point of the constructed channel and install pump around operation to a ~ wl RocKSILL discharge into the special stillin basin; install tem ora slash ad alon ^ 9 p ry p p g the NOTES: ed e of the basin If necessa p g ry (refer to ump around operation notes on I .CONGLOMERATE MIX CLASS A # B RIP RAP -MINIMUM DEPTH OF 18" Erosion Control Details sheet), 2. UNDERCUT FOR STONE PLACEMENT o 4, All Installed temporary sediment and erosion control measures will be inspected a week) 3. CROSSING MUST BE PLACED IN A RIFFLE AND PERPENDICUTAR TO FLOW DIRECTION y or after a maJor rainfall event 0.5 inches) by the Contractor, Upon d1 inspection, any necessary repairs will be performed by the Contractor, p a 4. EXISTING BEAVER CREEK INVERT TO REMAIN TI1E SAME 0 P V~ 5• erform stream channel construction at station 0+00 and excavation of the a bankfull bench areas ad acent to the ro osed channel's locate n, J p p o Install rock and/or log In-stream structures as directed by the Engineer at the time of +r ~ ~ suRFACE FLOW constructlon. Line restored stream banks with - " ~ DIVERSION CF 7 matting and Iwe stake banks as constructlon roceeds. FIII abandoned channel area vii ~ p s th cut material, ORIGINAL STREAMBANK Finalize grading In bankfull bench/floodplam areas. ii i i ~4~i~,i>~r ~ ~ io ~g~ ~ `~i Q z : A I erosion control seedm m ~ Z ~ f' ~ ~ ~ ~ ,,~5- 6. pp Y g easures to disturbed areas to stabilize site. •o s ~ ~ o ~ i °o~i ~ ,~d~j STONE APPROACH SECTION Kemove silt fenan ~ ~ c ~i° 5:1 MAX, SLOPE g, gravel check dam, bypass or cofferdam ~ pump around ~ g oNGLOMERATE 0°° ON ROAD equipment, and any other tem ora erosion control devices Installed ~ MIX CLASS A 4 B ° a, ~ p ry for the ~ ~ = RIP RAP ,~I ~~2e~o~goc~a~at~ purposes of restoration/channel construction. 9 '-I I ~I I I I I i ~I I ~ ~I I~I~i~l~ - UNDERLAY W! 8. Plant ri arian area as shown m tans and as der ~ s, p p ected En ineer at the time of ~ ~ UNDERCUT ChiFWNEL by g NON-WOVEN construction or at the a ro riate time of ear I n 0 ° s FOR STONE PLACEMENT pp p o o GEOTEXTILE FABRIC likely late winter/earl s rin be r Y p 9 ro 0 TRUCTION FOR CONS N NOT n 02005 Sal E Environmental Consultants, PA. NI rv hts reserved. o t~ 3 N ~p o 0 ~ zN N 6O ~ uQ1f~ ¢a C 117 i ' ~ ? m m i, i~ ' GEOTEXTILE FABRIC ~ VANE ARM w BANKFULL STAGE NAIL Z _ 0 0 20 -30 GRAVEL FILL p - U FLOW VANE ARM ~ _ Z u, 3-7~ p m F OTER ROCK _ LOG ~ 0 ~ w STREAM CHANNEL BED r' - F- ~ G w ~ ~ ANCHOR LO ~ ' ' / Q 0 U COUR POOL GEOTEXTILE FABRIC ~ I_ U S ~ RIGHT BANK EXCAVATION p- N SCOUR POOL AREA J w U ~ FOOTER ANCHOR LOG J ~ Z ~ ROCKS w ((1 Z~ ~ J ZQ Z Q LEFT BANK Q ~ ~ U PLAN CR055 SECTION ~ o _ PROFILE v ~ ~o 0 - DETAIL LOG J 1100K ~v F (NOT TO SCALE) 9 aq I/3 BKFWIDTH I/3 BKFWIDTH C "A" OR "B" ~ w AGGREGATE STONE ~ , ~ 8 a RIGHT BANK ~ ~ BANKFULL STAGE FOOTER ~ a FLOW-= yt-aP ROCKS O 6EOTEXTILE FABRIC p ~ - a~ 20°-30° 3 GEOTEXTILE FABRIC ~ ~ ROCK STEP STEP ~ N ti STREAM CHANNEL BED FOOTER ~ ROCKS ~ LEFT BANK SCOUR POOL PROFILE p z FOOTER ROCK SCOUR POOL ~ D. 0 0 o ~ a ~ ~ 0~ PLAN _ DETAIL ~ J 1100K WITI1 STEP POOL _ NOT TO SCALE) o ~ ( Oo u~ 4 0 m a Y TRUCTION FOR CONS o )NOT U U ®2005 Sal 6 Enmronmental Consultants, PA. All n hts reserved. o 3 3 N o ~ _ : 0 ~c~v' N o ~ N LEFT BANK RIGHT BANK LEFT BANK RIGHT BANK J J " " (I /3) BKF WIDTH CLASS "A" OR "B" z Q (I J3) BKF WIDTH Cog "A" ORB Z AGGREGATE STONE AGGREGATE STONE o 0 o~ ~ BANKFULL STAGE ~ ~ 4~ FOOTER z w ? FLOW - '~~0 ROCKS m Q ~ ~ - ~ ~ ° GEOTFXTILE FABRIC STREAM CHANNEL BED lLi g 0 20°-30° 20 -30° 20°-30° C STEP ~ ~ ~ 20° 30° GEOTFXTILE FABRI Q Q GEOTEXTILE FABRIC P00~R ~ F' ~ ROCKS a- W Q SCOUR POOL J ~ z N w W > z~ ~ OG STEP Z W z = OCK STEP PROFILE 0 ~ ~ N ScouR U 0 ~ SCOUR N U F POOL POOL p j ~ ~ ~ ~ IL N PLAN ~ Q PLAN ~ ~ ~ ti ~ E ITI1 STEP POOL DETAIL ~ ~ CROSS ROCK VANE W NOT TO SCALE) dl ( ~ a~ SHRUBS SPECIES COMMON NAME TOTAL N SIZE ~M~ to Alo streambank 3' ^ ~ Sambuas anadensrs Elderberry 410 laves kes n9 w BANKFULL BENCH 2' ~ Corms amonum Silky dogwood 410 lave stakes Along streambank A LNG ~ g GOIR M TT a ra 81ack wdkrN 410 lave stakes Abng streambank ~ Sala nw, - I I- 1(- TOTAL 1230 - - I ^ a III~I ( BASE FLOW p - - ~ BANKFULL BENCH ~ III- g _ III - - - V a - - _I -I III - - - - - - -III-I - II ® ~1 . ~ 1-I i I- - - - - - 12 ECO-STAKE cd < ~ - - -III-I I I- ~ -1 I I-1 I I-1 I I-1 i i-~ I ~~y ~tltl III I I ' " ~ N tl - - - a ® 12 ECO STAKE iM BASE FLOW p - -III- 24 ECO-STAKE ~ II III- - - - - " _ _II - - - PROFILE VIEW 24 EGO STAKE FRONT VIEW - I I_I III - - - --I -i I I-I i I- - _ =III= - z III I-1 I I-1 I I-1 I I-~''~ ANGLE-cur END e " TRENCH TOP OF MATTING TO A • MINIMUM 2' CENTERS ALONG BOTTOM 12" ECO-STAKES INSTALLED IN EW " ~ P RO F I LE V DEPTH OF AT LEAST 12 ,STAKE ~ • MINIMUM I' OVERLAP AT JOINING BANK FLUSH WITH GOIR MATTING A IN PLACE, 4 BACKFIII TO DESIGN GRADE IN6 ABOVE BOTTOM ROW OF 24 ECO ST KES ~ , a SECTIONS OF COIR MATT • LIVE STAKES INSTALLED IN BANK • MINIMUM 24" ECO-STAKFSO • EGO-STAKES SPACED AT 9 WITH DEAD BLOW HAMMER D ALONG TOE OF MATTING ° . 4/5 OF STAKE IN GROUND INSTALLS MAXIMUM 3' CENTERS (APPROX.) (Intercept between water Surface and band b ~ .BUDS ORIENTED UPWARDS O`d s~ ~ . 3' CENTERS (APPROX.) r • CUT EXPOSED END OF LIVE STAKE .rl ~ 0 0 g AFTER INSTALLATION IF DAMAGED ~ DUE TO INSTALLATION V1 p.e. damaged bark, spilt ends, etcJ s 3 COIR MATTING DETAIL A E PLANTING DETAIL CTION LIVE ST K STRU NOT TO SCALE) R CON ~ ®T FO TO SCALE N (NOT ) ° N " u ~ ~ ®2005 Sod € En~ronmental Consultants, PA. All n hts reserved. NOTES: _ 3 Z N 3 - I . EXCAVATION SHALL BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL. ~ ~ ~ ~ zN N=0 2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORKARi=AS FROM STREAM FLOW. " ~ ~ dN 3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN C N TE : ~ ~ s a ~ - SPECIAL STIWNG BASIN A BE STABILIZED IN (AS DIRECTED AT THE ONE WORKING DAY. TEMPORARY SPIASH PAD F W 4. PUMP AROUND SHOULD 8E ABIF TO CONVEY MINIMUM OF I CFS PER MIz OF ~ TIME OF CONSTRUCTION) w D AIL, LOCATE DRAINAGE AREA TO SITE UNLESS OTHERWISE SPECIFIED IN SPECIFICATIONS. z _ AS DIRECTED AT THE DEWATERING PUMP p I I o TIME OF CONSTRUCTION I U ~ ) M P A U D 5 EQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND ~ - Z m Q GRAVEL CHECK B E o0 D I . INSTALL SPECIAL STIWNG BASINS AT THE DOWNSTREAM END OF THE D ~ - ~ ~ DAM AT CHANNEL TEMPORA Y PROJECT WORKING AREA, E5IGNATED ~ ~ ~J TERMINUS FLEXIBLE 2, THE CONTRACTOR WILL INSTALL THE PUMP A i W ~ ~ HOSE ROUND PUMP AND THE TEMPORARY (L J EXISTING PIPING THAT WILL CONVEY THE BASE FLOW FROM UPSTREAM OF THE WORK SITE TO THE O O WORKING SPECIAL STILWNG BA51N. ~ O `GH DI i ANNEL E AREA 3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPE T a' ~ ~ DIVERSION. RA IONS FOR STREAM J W U E Z z TEMPORARY PIPING E 4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKP AND PUMPING APPARATUS IF NEEDED TO W O DEWATER THE ENTRAPPED AREA. THE PUMP AND HOSE FOR THIS PURPOSE SHA Z ~ LL BE OF Z Q z U SUFFICIENT 51ZE TO DEWATER THE WORK AREA. THIS T WAT U ER WI T LL I W ALSO FLOW INTO A O ~ ~ Z SPECIAL STIWNG BASIN. ~ O 5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH ~ U O E U E E IMPERVIOUS DIKE THE PLAN AND FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE. N ~ (n (LOCATE A5 6. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE ~ O REMO EE O VL T DIRECTED AT A OF THE IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES, PUMPS, AND J ~ PUMP AROUND PUMP-~ _ THE TIME OF TEMPORARY FLEXIBLE HOSE/PIPING STARTING WITH THE DOWNSTREAM DIKE FIRST. W 7. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BA51NS AND ST ] CONSTRUCTION) ABILIZE ~9 OW DISTURBED AREAS AS SHOWN ON PLANS. ~ ~ ti a 9 m` SPECIAL STILLING BASIN TYPICAL PUMP A ROUND OPERATION ~ ~~jj~ (NOT TO SCALE) EXISTING GROUND $ a w FILTER FABRIC ~ o TEMPORARY SEEDI N SP FOR DRAINAGE ' S-2o Fr G ECIFICATIONS (NON-WOVEN) ~ General Soil Amendments SPECIAL STILLING BASIN 0 v V~ FoNow recommendations of sod tests or apply 2,000 Ib~lacre (NOT TO cJ- CALE) Areas where no substantial or significant progress is made for r~ round a ricultura i to g g I I mestone and 750 Ibs/acre 10- 10- 10 ~ more than 15 days should be temporarily seeded as shown ~ below fertilizer, N .All areas should be seeded, mulched, and tacked. ~ ~ Inadental grading shall not constitute substantial or sigmfuant Mulch progress m construction activity. Seeding and mulching shall SANDRA TONE Mulchin shall consist of small rain straw a lied at a rate ~ BASEFLOW be done immediately following construction, All disturbed g g pp z ~ ~ ~ ~ areas shall be dressed to a depth of 8 inches. The top of 70 Ibs,/ 1000 sq,ft, Mulched areas shall be mechanically WORKING = •d ~ 3 inches shall be pulverized to provide a urnform seedbed. tacked m place (or other approved tacking method). AREA W No asphalt shall be used for tackng, Use Jute, excelsior a ~ matting or similar material to cover exposed areas of FILTER FABRIC FOR DRAINAGE IMPERVIOUS SHEET Seeding concentrated flow, F, (NON-WOVEN) d ~ Seeding Dates Seeding Species Rate {Ibslacre) 6 Maintenance ~ May I -Aug. 15 German Millet 40 s Au . 15 - Ma I Ins ect and re air mulch fre uentl , i IMPERVIOUS DIKE 0 0 9 Y Rye (grain) 60 p f q y Refertl¢e and reseed as ~ o N required to maintain vigorous temporary vegetative cover (NOT TO SCALE) during construction. See Cofferdam Detail for S e en s 0 of Temporary Coffer m _ STRUCTION LL OT FOR CON N ®2005 Sal F Enhronmental ConsuRants, PA. All n fits reserved. _ 3 z N z' ny,~ _ o€`~ 3 2 ~RVIOUS EAKfH CORE o ~ ° ~ ~ T P ATION OF EA4r:FLOW IO NLn. z N m N= O - - ~ TOP flfVATION OF BASfFLON'- - - 0.5'-I' - - ~ - 0 EIEV- - - - - - - - 0.5'-I' o ~ ~ i u Q k. ~ N ~ W MWf. k57 WASHY ~ jam' CRASS I RIP-RAP I STONE ~ ~ D ~ IXISTING SLOPE IXISTING SLOPE ~ Z CUSS I R1P-RAP FILTER FADPJO ~ Z - NOTES: nLmtFaewc 0 - vARI~ HEIGHT # WIDTH DETERMWED BY ""R'~ u (n EXISTING TOPOGRAPHY AND p ~ IaM~,. J_ SEDIMENT STORAGE REQUIRED, SECTION VIEW NOTES: Z m SECTION VIEW OIA55BR1PRPPPAD 0 o Q Ma+. mlcr>afss 16' ~ - ~ KEY RIP RAP INTO THE DAM HEIGHT # WIDTH DETERMINED BY ~ W FOR STABILIZATION. EXISTING TOPOGRAPHY AND W ~ SEDIMENT STORAGE REQUIRED. oPrloNUFILTfReA„ ~ ~ ~ (r0 6f QED IW1TH 9EMfNT) O 0 6 J KEY RIP RAP INTO THE DAM ~ O FOR STABILJZATION. ~M n ~fl~ ~ ~W J ~ Z IX~~ PLAN VIEW w z IXISTING SLOPES z ~ 0 ZW z U VAR1E5 0 ~ 0 Z U ~ N 0 6°-I' KEYED RIP RPP r•~ O •v'' ~•n'~:i•'' ,,c' OVSSBRIP RAP PAD O • ••y ;0~4` v ~ E: ;,,t. f..;:~;', KPYFD RIP RAP MIN. mIGKNE55 18' ~ ~a (w ~ J LL. i57 WASHED STONE ~ W k57 WASHE09TONE ss G !X~~ d ] N PROFILE VIEW PROFILE VIEW NDN-WOVEN a GEOTIXfIIE FADRIO ~ Q, SECTI01'J VIEW a TEMPORARY COFFERDAM aw TEMPORARY SPLASH PAD DETAIL DAM MULTI-USE CONFIGURATION TEMPORARY CHECK NOT TO SCALE) (NOT TO SCALE) (NOT TO SCALE) 0v steel Post ~ V~ - Gau e • Min. 12 I/2 g Woven Wire Fabrlc ~ ~ Intermediate Wires Silt Fence Fabnc ~ N ~ e' a ~ ~ . Min. 10 Gauge a' Llne Wires ° ~ ~ i' Grade v N z o / ~ 9 ~ / I • iv 6' Mm. Cover a g ~ Over Swrt a o ~ \ ~ ~ Anchor Swrt as W Y ? ~ ~ \ ~ \ Directed En lneerJ / by 9 ~ ~ ~ 'Designer ~ / SIDE VIEW p o FRONT VIEW ~ 9 , STANDARD TEMPORARY SILT FENCE DETAIL (NOT TO SCALE) N STRUCTIO T FOR CON NO o N u u 02005 Sod 6 Enwronmerltal Consultants, PA. All r hts reserved.