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HomeMy WebLinkAbout20011059 Ver 1_Complete File_20010710F wtirERP O G f DWQ Project No.: 0//057.2 County: Applicant: ,y c- JoT wis?o? 12-- ?c Project Name: -,lL 14ooee - /21;2cf ye Date of Issuance of 401 Water Quality Certification: Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return this certificate to the 40L Wetlands Unit, North Carolina Division of Water Quality, 1621 Mail Service Center, Raleigh, NC, 27699-1621.This form may be returned to DWQ by the applicant, the applicant's authorized agent, or the project engineer.lt is not necessary to send certificates from all of these. Applicant's Certification 1, M l C to piCL I- , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the . approved plMn?Date:- d other supporting materials Signature: -7 Agent's Certification 1, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: If this project was designed by a Certified Professional 1, , as a duly registered Professional (i.e., Engineer, Landscape Architect, Surveyor, ect.) in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project, for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved pl: as and specifications, and other supporting materials. Signature Registration No. Date NETLMD61401 GROUP JUL 2 2 ?U0,7 'VATERQUALITYSECTION L, T b 2V, AM N' MM Michael F. Easley Governor William G. Ross,-Jr., Secretary Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director Division of Water Quality ?z.-=mss c Division of Water Quality 1650 Mail Service Center Raleigh, NC 27699-1650 Wetlands/401 Unit (919) 733-1766 ---- .....,, - O?oF W ATFIT Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Kerr T. Stevens Division of Water Quality July 17, 2001 Cleveland County DWQ Project No. 011059 SR 1606 (St. Peter's Church Road) APPROVAL of 401 Water Quality Certification with Additional Conditions Ms. Trish Simon, Environmental Officer NCDOT Division 12 P.O. Box 47 Shelby, NC 28151-0047 Dear Ms. Simon: You have our approval, in accordance with the attached conditions, to permanently impact 105 linear feet of Knob Creek for the purpose of improving SR 1606 (St. Peter's Church Road) in Cleveland County. The project should be constructed in accordance with your application dated July 3, 2001 (received July 10, 2001). After reviewing your application, we have decided that this fill is covered by General Water Quality Certification No. 3289 corresponding to the U.S. Army Corps of Engineers General (Regional) Permit Number 198200031. In addition, you should acquire any other federal, state or local permits before you proceed with your project including (but not limited to) Sediment and Erosion Control, Non- Discharge and Water Supply Watershed regulations. This approval will expire with the accompanying 404 permit unless otherwise specified in the Water Quality Certification. ,.i..,.. This approval is valid solely for the purpose and design described in your application (unless modified below). Should your project change, you must notify the DWQ and submit a new application. If the property is sold. the new owner must be given a copy of this Certification and approval letter, and is thereby responsible for complying with all the conditions. If total wetland fills for this project (now or in the future) exceed one acre, or of total impacts to streams (now or in the future) exceed 150 linear feet, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to be valid, you must follow the conditions listed in the attached certification and any additional conditions listed below. 2. 4. Any trout conditions as determined by the North Carolina Wildlife Resources Commission, to protect the egg and fry stages of trout from sedimentation during construction. Nonpoint Source and Stormwater Pollution requirements for WS-IV Waters as specified in 15A NCAC 2B .0216 (project lies within the Critical Area of the watershed). Sedimentation and Erosion Control Guidelines for Sensitive Watersheds (15A NCAC 413 .0024) must be implemented prior to any ground-disturbing activities to minimize impacts to downstream aquatic resources. Temporary or permanent herbaceous vegetation should be planted on all bare soil within 10 days of ground-disturbing activities to provide long term erosion control. The culvert required for this project shall be installed in such a manner that the original stream profile is not altered (i.e. the depth of the channel should not be reduced by a widening of the streambed). Existing stream dimensions are to be maintained above and below locations of culvert extensions. All work shall be performed during low flow conditions. All mechanized equipment operated near surface waters should be regularly inspected and maintained to prevent contamination of stream waters from fuels, lubricants, hydraulic fluids, or other toxic materials. North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ Page 2 of 2 _ 7. The presence of equipment in the channels must be minimized. Under no circumstances should rock, sand or other materials be dredged from the wetted stream channel under authorization of this permit, except in the immediate vicinity of the culverts. 8. Mowing of existing vegetated buffers is strongly discouraged, so that they may be utilized for storm water sheet flow. 9. Use of rip-rap for bank stabilization is to be minimized; rather, native vegetation is to be planted when practical. If necessary, rip-rap should be limited to the stream bank below the high water mark, and vegetation should be used for stabilization above high water. 10. Rock silt screens at culvert outlets should be removed at project completion. 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 Ms. Cynthia Van Der Wiele at 919.733.5715 or Mr. Pete Colwell of the Mooresville Region Office at 704.663.1699. Sincerely, T. *Stevs Attachment cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Field Office NCDWQ Mooresville Regional Office Central Files File Copy TO: Steve Lund, USACOE Asheville Field Office FROM: Maryellen Haggard, Regional Coordinator Habitat Conservation Program DATE: July 16, 2001 SUBJECT: North Carolina Department of Transportation (NCDOT), SR 1606, St. Peters Church Road, Unnamed Tributaries to Knob Creek, Cleveland County The North Carolina Department of Transportation (NCDOT) is requesting a concurrence letter from the North Carolina Wildlife Resources Commission (NCWRC) to obtain a 404 permit from the U.S. Army Corps of Engineers. Biologists on staff with the NCWRC have reviewed the proposed improvements and are familiar with habitat values of the project area. These comments are provided in accordance with the provisions of the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d) and the Clean Water Act of 1977 (33 U.S.C. 466 et seq.). The proposed project consists of paving SR 1606 from SR 1618 to SR 1614 for a length of 1.3 miles. Two pipe replacement/extensions will permanently impact 105 In. feet of unnamed tributaries to Knob Creek. We will not object to the project as proposed provided that the following conditions are implemented: 1. Disturbance of the stream channel must be limited to only what is necessary to install the pipe culverts. Heavy equipment should be operated from the bank rather than in the stream channel in order to minimize sedimentation and reduce the likelihood of introducing other pollutants into the stream. 2. Culverts greater than 36" should be buried approximately V into the streambed. The dimensions, pattern, and profile of the stream above and below the pipes should not be modified by widening the stream channel or reducing the depth of the stream. Where previously disrupted, natural floodplain benching should be restored. This includes the area in front and below culvert headwalls so that the base flow is properly maintained and directed through the culvert. SR 1606, St. Peters Church Road 2 July 16, 2001 3. Stringent erosion control measures should be installed where soil is disturbed and maintained until project completion. 4. Temporary or permanent herbaceous vegetation should be planted on all bare soil within 15 days of ground disturbing activities to provide long-term erosion control. We encourage NCDOT to utilize onsite vegetation and materials for streambank stabilization, to minimize the use of riprap (or hard stabilization methods) and to maximize the use of native vegetation for stabilization and shade. If concrete will be used, work must be accomplished so that wet concrete does not contact stream water. This will lessen the chance of altering the stream's water chemistry and causing a fish kill. Thank you for the opportunity to review and comment on this project during the early planning stages. If you have any questions regarding these comments, please contact me at (336) 527- 1547. cc: Cynthia Van Der Wiele, NCDWQ Trish Simon, NCDOT e??o 401 ISSUED STATE or NORTH CAROLINA DEPARTMENT OF TRANSPORTATION MICHAEL F. EASLEY LYNDO TIPPETT GOVERNOR SECRE I'ARY MEMO TO: John Dorney, NCDENR/DWQ/401/Wetlands Unit FROM: Trish Simon, Division 12 Environmental Officer DATE: July 3, 2001 SUBJECT: Pre-construction Notification 01 1059 Enclosed are seven copies of a pre-construction notification nationwide permit application for a secondary road paving/pipe replacement project in Cleveland County for your review and comments. is r Post Office Box 47 Shelby, North Carolina 28151-0047 1059! 401 ISSUED V= -N STATE of NORTH CAROLINA DEPARTMENT OF TRANSPORTATION MICHAEL F. EASLEY LYNDO TIPPETT GOVERNOR SECRETARY PO BOX 47, SHELBY, NC 28151 July 3, 2001 Mr. Steve Lund US Army Corps of Engineers 151 Patton Avenue, Room 143 Asheville, NC 28801-5006 Subject: Nationwide Permit #14 SR 1606, St. Peters Church Road Cleveland County, NC Dear Mr. Lund: The North Carolina Department of Transportation, Division of Highways, proposes the following project for your issuance of a Section 404 Permit. We believe this project can be accomplished under NWP # 14, Linear Transportation Crossing. - I have enclosed a straight line diagram with erosion control plan, a PCN application for NWP #14, a sketch of planned activities, and a location map relative to the secondary road paving project and pipe replacement projects on SR 1606, St. Peters Church Road, Cleveland County, NC. The streams impacted by the proposed project are two unnamed tributaries to Knob Creek, which are classified Class C waters and located in the Broad River Basin. One of the tributaries does not appear on the USGS topographical map (Lawndale Quadrangle, 1982). There are no wetlands involved in the project. St. Peters Church Road is currently a partially unpaved 18-foot wide gravel road. The Division of Highways plans to pave the road to a width of 18 feet from the paved section, which begins around SR 1618, to SR 1614 for a length of 1.3 miles. It will be graded and paved to current standards and typical section using bulldozers, pans, backhoes, rollers, and pavers. The majority of the work will consist of reshaping the existing alignment with areas of new alignment to provide a safer alignment. The stream parallels the road from Station 17+00 to 28+00 (the distance from the stream to the road ranging from 7-0 -n Fri C-7 -< r-n r,-.i Mr. Steve Lund Page 2- SRI 606, Cleveland County July 3, 2001 approximately 10 feet to 40 feet). The road realignment is necessary in this area to provide a buffer between the parallel stream and roadway construction. Erosion control devices, such as silt fences and silt detention basins will be utilized in areas where construction will be in close proximity to the stream. Clearing and grubbing of trees and vegetation will be kept at minimal removal necessary for roadway construction. The alignment changes are shown on the enclosed map. The approximate acreage of the secondary road paving project is 9.45 acres of NC DOT right of way. The project proposal also includes the pipe replacement/extension at Stations 4+50 and 25+40 on the two unnamed tributaries of Knob Creek. At Station 4+50, the shift in road alignment will necessitate the placement of a 60-foot long, 72" CMP with concrete headwall and 10 feet of riprap on the outlet. The existing 50-foot long, 72" CMP on the old road alignment will be removed. At Station 25+40, a 40-foot long CMP will be extended 30 feet to the upstream side to accommodate the alignment shift away from the parallel stream. Five feet of riprap will be placed at the inlet for stabilization. The total linear footage of the unnamed tributaries to Knob Creek to be permanently impacted by the placement of fill and the placement of riprap at the inlet and outlet for stabilization is 105 feet. The pipes will be placed one foot below existing streambed elevation and disturbed areas associated with the pipe replacements will be stabilized. Existing channel morphology will be maintained at the inlet and outlet. It is proposed that the watercourse be blocked using barriers and sandbags and pumped around the construction areas during the pipe installations following NCDOT best management practices for pipe placement activities. The.diversions.will.extend . . approximately 15 feet beyond the length of the new pipes. A review of the Natural Heritage information for the threatened species listed for Cleveland County, the dwarf-flowered heartleaf (Hexastylis naniflora), did not reveal any known sites in the vicinity of the proposed project. I have conducted a survey for the dwarf-flowered heartleaf in the project area on June 27, 2001. None were observed. It was determined that no heartleaf species or suitable habitat was located in the proposed project area. No significant effect on this species is anticipated. A review of the National Register of Historic Places was also conducted. There are no sites listed on the National Register nor are there any eligible historic sites that will be affected by the proposed project. By copy of this letter, we are asking Neil Trivette, Area Roadside Environmental Engineer to comment on the above project. By copy of this letter, we are also requesting concurrence from the Wildlife Resources Commission and the U.S. Fish & Wildlife Service. Mr. Steve Lund Page 3- SRI 606, Cleveland County July 3, 2001 By copy of this letter, I am forwarding seven (7) copies of the application package to John Dorney, NCDENR, Division of Water Quality, 401/Wetland Unit for review. A $200.00 check is enclosed for application processing. Your earliest consideration for this request would be greatly appreciated. Should you have any questions, please call me at 704-480-9020. Sincerely, Trish Simon Division 12 Environmental Officer Enclosures cc: Mr. Michael L. Holder, P.E., Division Engineer Mr. Dan Holderman, Division Bridge Engineer Mr. Larry Carpenter, Cleveland County Maintenance Engineer Mr. Neil Trivette, Area Roadside Environmental Engineer Mr. Ron Linville, WRC Mr. Brian Cole, USF & WS Mr. John Dorney, DENR,DWQ,401/Wetlands Unit File Office Use Only: n Form Version Apri12001 USACE Action ID No. DWQ No.t If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ? Section 10 Permit ® 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 14 I If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? II. Applicant Information Owner/Applicant Information Name: N.C. Department of Transportation Mailing Address: P.O. Box 47 - - Shelby, North Carolina 28151 Telephone Number: 704-480-9020 Fax Number: 704-480-5401 E-mail Address: 2. Agent Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Trish Simon Company Affiliation: N.C.Department of Transportation Mailing Address: P.O. Box 47 Shelby, North Carolina 28151 Telephone Number: 704-480-9044 Fax Number: 704-480-5401 E-mail Address: tsimon@dot.state.nc.us Page 3 of 12 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: St. Peters Church Road (SR 1606 secondary road paving project- Pipe replacement & extension at Station 4+50 and 25+40. 2. T.I.P. Project Number (NCDOT Only): N/A 3. Property Identification Numbers (Tax PINs): NCDOT Right of Way. See attached map indicating adjacent property owners & Tax PIN's. 4. Location County: Cleveland Nearest Town: Belwood Subdivision name (include phase/lot number): N/A !- Directions to-site (include road. numbers, landmarks, etc.):. _Take Hwy._ .18 . North from... Fallston for approximately 4 miles. Turn left onto SR 1614 and proceed approximately 2 miles. Turn right onto SR 1606. 5. Site coordinates, if available (UTM or Lat/Long): Station 4+50- 35°29'34N/81°3220W: Station 25+40 - 35°29'48N/81 °32'09W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application: Piped crossings a partially unpaved secondary road. 7. Property size (acres): 9.45 acres (NCDOT right of way) 8. Nearest body of water (stream/river/sound/ocean/lake): Knob Creek, Class C Waters. 9. River Basin: Broad (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/.) Page 4 of 12 10. Describe the purpose of the proposed work: The project consists of the upgrade of an existing unpaved road to current paved road standards for the safety of the travelling public. Will upgrade existing alignment with areas of new alignment. The existing roadway is 18 feet and will be paved to 18 feet. At Station 4+50, an existing 50-foot, 72" CMP will be replaced with a 60 foot, 72" CMP sixty feet downstream of existing location on the new road alignment. At Station 25+40, an existing 40-foot, 48" CMP will be extended 30 feet on the upstream side to accommodate the alignment shift away from the parallel stream. 11. List the type of equipment to be used to construct the project: Work will be done usinu typical heavy construction: bulldozers, pans, backhoes, rollers, and pavers. 12. Describe the land use in the vicinity of this project:The surrounding area is wooded & rural. 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. N/A V. Future Project Plans Are any additional permit requests anticipated for this project in the future? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application: The existing road is a partially unpaved road that is to be paved under this permit request. There are two other stream crossings on this road. DOT has no plans to replace either pipe in the near future. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream 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 5 of 12 1. Wetland Impacts NO WETLAND IMPACTS Wetland Impact Site Number (indicate on ma Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (ycs/no) Distance to Nearest Stream (linear feet Type of Wetland*** * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online athttp://wN-.,NN,.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: 0 Total area of wetland impact proposed: 0 2. Stream Impacts, including all intermittent and perennial streams Stream Impact Site Number Length of Average Width of Perennial or (indicate on Type of Impact* Impact Stream Name** Stream Before Intermittent? map) (linear feet) Impact (please specify) Placement of fill in I stream (Pipe on 60 feet Unnamed tributary to 2 ft Intermittent new location with Knob Creek . concrete headwall) Placement of riprap 1 at pipe outlet for 10 feet " stabilization Temporary impact 15 feet on inlet I of stream diversion od outlet " j Placement of fill in Unnamed tributary to 2 stream (pipe 30 feet Knob Creek 1.5 ft. Intermittent extension) Placement of riprap 2 at pipe inlet for 5 feet " stabilization Temporary impact 15 feet on inlet ` « 2 of stream diversion and (total =30) " List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest do,amstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at wtivw.usgs gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., wxvtiv.topozone.com, vv\v\v.mapgtlest.com, etc.). Page 6 of 12 Cumulative impacts (linear distance in feet) to all streams on site: Placement of additional fill in stream = 90 feet. Cumulative distance of riprap placement for stabilization = 15 feet. Total temporary impacts of both stream crossings due to pipe stream diversion = 60 feet. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. NO OPEN WATER IMPACTS Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) -(lake, pond, estuary, sound, (indicate on ma) (acres bay, ocean, etc. ' List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 4. Pond Creation NO 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.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): 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 were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. NCDOT will be grading and paving SR 1606 in order to improve safetv and reduce maintenance. Grading will be primarily be done on existing alignment with three alignment shifts. Two of the alignment changes are to provide a safer alignment for the traveling public. The third alignment shift at St. 25+40 is to provide an increase buffer between the Knob Creek and the roadway during construction. The creek parallels the road from Station 17+00 to 28+00 (the distances ranging from ---10 feet to --40 feet). The roadway typical section in this area will be adjusted to reduce potential stream impacts, provided that the safeness of the road is not compromised. Erosion control devices, such as silt fences and silt detention basins will be utilized in areas where construction is in close proximity to the stream channels. Clearing and grubbing of trees and vegetation will be kept to the minimal necessary to construct the roadway. Page 7 of 12 VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.ne.us/ncwetlands/strm.gide.hti-nl. 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. PERMANENT IMPACTS DUE TO FILL AND PLACEMENT OF RIPRAP FOR STABILIZATION < 150 FEET; THEREFORE, MITIGATION NOT ANTICIPATED. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at httpA12o.cnr.state.nc.us/NvrP/indc..htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Page 8 of 12 Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes ® No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (DWQ Only) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact (square feet) Multiplier Required Mitigation 1 3 2 1.5 Total Gone 1 extends out 3U leet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. Page 9 of 12 If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or.0260. N/A XI. Stormwater (DWQ Only) Describe impervious acreage (both existing and proposed) versus total acreage on the -site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. SR 1606 is a 1.3 mile unpaved road that is to be paved to an 18-foot width under this permit application. Erosion and sedimentation control measures will be in place during construction. XII. Sewage Disposal (DWQ Only) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. XIH. Violations (DWQ Only) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). ?A ?, 2? 7_.?__ D Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 10 of 12 PRO, t I6t2 h ? ?- '`x?}' i 4+? - 352934N/8132 l 7 f / X ,,......._._ ...i... , N-1 - ---.? Y - ?' - IG Grove t 15351 en-' o eb?? Name: LAWNDALE Location: 035° 29' 28.8" N 061'31'47.5" W Date: 6/2812001 Caption: Pipe replacement/extension on SR 1606, Unnamed tributaries to Scale: 1 inch equals 1000 feet Knob Creek, Class C Waters, Broad River Basin Copyright(C)1997, Maptech,inc. iQ 1 l .I /3 h n y , ? F^ t i A. t]]tII Jed ?r t? •? 7 4 SC; 1 ' ?f 61382 6 6882 '\ ? ;.? :?x? `?.•- ?`7 -b•, ••;x 5 D0 / 1 • 414?(i `?``F ? ? ? ?{? '•'t _ .. ?} nn may. ` yl.°? l t" v i / p? •. ? I{A` +r 6?'(+Z.,. v 48 CAP ?( A2 68cz \ ?? C \ ` pp• f7?? oa. \, X1,1 'f j( E \\`f'?o• C2:? l? \ dal ?C -.'t`!'. • .; (; ' ?r? , 1:? y '.? p ch, JEZ VIII: F Bt <fJ1 .103 t { C?? :-J j2Z :?{82 ( 3182/, 3182 + 32ty` ?{ '?:,. ? 31f?_ .:'S"'".? ; a : • ._ 3182 r f'`?? ?,?fS ? ?') 315 `• GC ? - 'c :? `1 ( I 32.C° ZJ-. rt :/ 6?+, bP,r ?_-3 B ,?Z?Z er r 3s : 0 .60 • 1 C . 3182 3368 b JA „t '(?1G?p l! 62 4 i b J i' A 1 - C? 3 L I `? .???• .:= :z; 319E _ ,t` ? ,+? ? ?, m?-? ?- ?? l_ ? .3 { '`,. I ,]4 ti ?- ? "??•1. 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'F : ?_ ;w. 3 32 3152 Ys?r?a 3162 3 k 31 4 r 3? 3??L •'?, 640 "?' 3182 F`•?.5.6/?,? ,: r F ' ?`C'?B 315= F 369 0 ++????IIII > a p f Zct t, r 1 3 32CZ. r 31?z `" ?? 1r 9a36?%_ g r4 31eZ l 7(: ?f 309.- ?? - _ >t.:.rrjrr 368 \ ? ti OP 13 31 ?`, , ?' ,? rt 32CZ ` p ?- r , Bz 32c `r 3zcz 3151 i*ti a•. z gtS2 ?1 3 c/ { zc 3152 J 36B 3bC 3bB }2C2 3 p/ . , 1 3182 .?-' 4' 3181 3 3Xz f ' C o ?? tk. '.rat 16? 3 62 ., 318E / ?JZr 3182 ?\?L - ^' 7 z o sql ;, a 2 ?, v? r v ?. z lB2 5 R 1 L6 3 3ZCL a?•? ?? r ?1'?+,?`••_.i71-'r:• ?}?',r 3ta?,.. :?1?2? W h M'"a ? ?; 31az 3lsz 32('?' 3101. 3132 31CZ? * H ?'.? 32[7 31Bz .y.. ZDy i 32 2[2 GY it+"3 E4" ?1?? > i. 1 '182 g_ 7 .?1. r?/Vgi !'1 ,:1`• '.:r. .f -?_ .,? 3ZCb_\\ 3?3/B? .\'? 4k7 1\i\'?IeziA 61{e? ..r' - ?BJ9\? v u.."n STATE OF NORTH CAROLINA - 9912?D02 • SUBJECT - PROJECT DEPARTMENT OF TRANSPORTATION S ' s `? , / ? ?,"! (?/1 • /.U ? ?. COUNTY DIVISION OF HIGHWAYS ,. HIGHWAY BUILDING PREPARED BY DATE STATION P. O. BOX 25201 RALEIGH, NORTH CAROLINA 27611 CHECKED BY DATE STR NO SHEET OF_ I : LP -1- -4 i ? I ul i I I I ?, : ? I ? i I , : I I 4. O , i 71 _; - Q' I i Lf w ?i J I ? , Q : I - -- T - - ?- - - - - 'r I - it i , 1- i I 41 SO-01 STATE OF NORTH CAROLINA /?Q l0 9 S/Z LIDO Z SUBJECT . PROJECT DEPARTMENT OF TRANSPORTATION yF 7 ?: ? ) ( DIVISION OF HIGHWAYS COUNTY HIGHWAY BUILDING PREPARED BY DATE STATION P. O. BOX 25201 RALEIGH. NORTH CAROLINA 27611 CHECKED BY DATE STR NO SHEET OF_ ---- 1- I-T _ 6;7-T _. _. _ .. ' - - - '- - i- - --t--1--'- -T-- L -I i SD-01 EROSION AND SEDIMENTATION CONTROL PLAN CLEVELAND COUNTY SR 1606 DATE June 21. 2001 DIVISION OF HIGHWAYS DEPARTMENT OF TRANSPORTATION STATE OF NORTH CAROLINA W.O. # 9.8124002 PURPOSE The purpose of this Erosion and Sedimentation Control Program of the Divisi b on of Highways is to control accelerated erosion and sedimentation resulting from the construction and maintenance of roads and' highways in North Carolina. This program is developed pursuant to the requirements contained in the Rules and Regulations for Erosion and Sedimentation Control which were adopted by the North Carolina Sedimentation Control Commission on April 10 1974. I i SR 1606 (St. Peters Church Rd. ) from its intersection with SR 16 14 to SR 1618. It will be constructed to the attached typical section. No problem areas are anticipated. The work will be completed during the 01/02 construction season. CONSTRUCTION SEQUENCE 1. Grading to be started by state forces. Install all necessary silt fences, sediment basins, and check dams and begin clearing construction area. 2. Rough grade the construction area and becdn installing any storm drainage and/or cross lines. Install inlet and outlet protection as storm drainage is being installed. As an area is brought to finish grade and the black base is placed for the road, and the shoulder finished, then seed, mulch and tack should be provided for denuded areas. 4. Leave all erosion control devices in place until vegetation has been established sufficiently to withstand erosion. DO NOT remove any erosion control deices until directed by the County En2ineer. IMAINTENANCE PLAN 1. All erosion and sediment control practices will be checked for stability and operation following every runoff producing rainfall but in no case less than once every- week. Any repairs will be made immediately to maintain all practices as designed. 2. Sediment will be removed from behind the sediment fence when it becomes about 0.5 feet deep at the fence. The sediment fence will be repaired as necessary to maintain a barrier. 3. All seeded areas will be fertilized. reseeded as necessary and mulched according to the instruction in the seeded specifications to maintain a rigorous, dense vegetative cover. 4. Outlet protection will be installed when outlets are installed. Filter fabric will be placed under the entire stone section and will be repaired and replaced if damaged during any phase of construction. 5. Sediment will be removed from the basin when it reaches 1.0 foot below the emergency spillway. The filter stone is to be cleaned or replaced when basin no longer drains properly. GROUND COVER FOR SLOPES, FILLS AND OTHER GRADED AREAS The angles for graded slopes and fills shall be no greater than the angle which can be retained by vegetative cover or other adequate erosion control devices or structures. -.. .. . Seeding should be done in accordance with the specifications for that season of the year. Additional erosion control measures may be required depending on the actual field conditions. i 4- _ . / 15t9 .' / 161a / 1? T, I 5C'5 1fp1 ` / / 1619 • i 0 : a,s \ 132 63J \? a ? ? // / 1618 lfyv6 ? \\ •\ \ . ! \ / 61 \ \ V ? /\ 15ta ) ) \ 637 \ le3z -ec -- Wu ? • J . ? 1606 \ I \ • . 1 / / 63] / 1 •.J - 160) ' _ / I 161a ? t? • ? / I ? 10f, fi] \ I I 1612 1nDD an /' 1 I ?. n3 ?: NOr•nOnS ^, I N J Cn. tsla 1637 16T _ 1 \ CLEVELAND COUNTY NORTH CAROLINA r.frans n n. NORTH CAROLM DEPARTMENT OF TRANSPORTATION DN IO!f Of HV--MWATS-nAl*4 . AM M"ICH SIAMCM M COOrwanOrr - M U.S.DVAITMTNT Of TI/JlS701T 000 MDA1 MGNWA7 ADAYNRTIATION 1639. \ - 1635 ? ._ DnC \ •$ r.. \ 1611 \ 1613 •1 I ?o SR 1606 St Peters Church Road 1.30 mi. / 1611 IN3 ; / '?saoesn 612 Cn. 1615 0 0 1 A N C N ? P - I EROSION= ""'ON TROL DETAILS ANA _ SPECIFICATIONS 1 Std? TM - DescriQjion Symbol Paae 245.03 Temporary Silt Ditch 245.05 -_- Temporary Diversion VI- 2 893.01 --- Temporary Silt Fence ,. 1?f V1-4 890.05 245 01 H! ...................... -------- Temporary Slope Drain with Earth Berm _<-- ?- .......... ? Silt Basin T A VI- 6 VI-8 . ype ................................. -0 - 10 245.02 Silt Basin Type B 892.04 Temporary Rock Silt Check Type-A _ 12 895.10 _ Temporary Rock Silt Check T ype-B VI -14 892.01 Temporary Rock Sediment Dam Type-A -__ V1_ is 892.02 897 01 Temporary Rock Sediment Dam Type-B .-• ____ ---- R VI - 20 . ock Pipe Inlet Protection °ro o ° VI 22 94.01 ° o ° Rock Silt Screen ° 245.04 Stilling Basin j Rock Inlet Protection: 896.01 Type A .................. A ? " OR '- A ............. ----- _ v1 30 896.02 Type B .................... ---•• B " OR " B? ----- V1- 32 896.03 Type C -- " C) VI 34 - VI-1 March, 1993 I _ i TEMPORARY SILT FENCE: A temporary silt fence is commonly used at the toe of a fill section to prevent off- site sedimentation. It is made of permeable filter fabric buried at the bottom, stretched and supported by steel posts. The silt fence reduces the water flow while retaining the sediment. They may also be used to divert water flow to protected outlets. Silt fences need to be checked after each significant rainfall to ensure there effectiveness. They must be maintained on a regular basis. Silt fences shall = be installed across streams, ditches, or waterways. AREAS OF USE: At toe of fill sections where sediment runoff can be stored and contained inside the project limits. - DESIGN CRITERIA: Material With Wire Without Wire Fabri c Type 3 Class A Type 3 Class B Steel posts length 5 ft 5 ft. Post spacing 10 ft. 6 ft. maximum VI-6 March, 1993 o LL)? Z 3 W W -?W 3 3 U0 2 O ?O ~ O W N 3? >? X 3 p ^' 4C z ?x am m JJ O = D O ? Z .--. aZ Cr ?W Oa F- O 0- Co W O Co Z a J J O I F- Ln i LL w Cr 3 W O Z J J U LL Cr Co O Lai. W H Cr U Cr 3 CLa JZ z O Li a U O O^ I ? 0 CL a I II - y0 11 1 LO L Z = t? W a II mm Uu . _ " = = ._ , Z m III ? L ? - ----------- ----- ---- ,L_ • , ?O?- I -------- A------- ---- oo zZ -- io ---I L.LJ W ? X ?-» I ? W 3 a N O W Z LLJ W Z z Z 3 Z ~ N _ O Q W W . U Z r < Q OD ? m w m LLJ Z N O Q O W if ) in > J=~ Z W = 2 M J Ur) - } L W = Cn H a Q 3 <11 -j J NZF- W C F- L JCl: w En m(nw aw= u -a: U) W 0 U CL a W N CC Cr F- F- w W = a LL 3 a [3] a O W O O W N Z w z WO pW J a CL Z J 6: ° zJWU W LO = W 0m 3 3 W F- Q - N O J LD O S: C:) Zw CL LL Z z z O cn O Li 0 <r -C U Cr Co a LL CE w J z z= 0C ¢ Eo w Uz w Ul) w LL a .. w m 0 d z m w ? ° VI-7 March, 1993 SILT BASIN `rvPE-B• A silt basin type-B is a temporary basin built to collect sediment flowing through n drainage way. The silt basin is built at the base of the ditch with its length being at least 2 times the width of the basin. The type-B silt basin is generally built in conjunction with temporary rock silt checks and other devices that control or slow down water flow. This device must be monitored closely and cleaned-out on a regular basis until grass is established along the ditch line and sedimentation is no longer a problem. AREAS or. USE: • In conjunction with temporary rock silt checks and other devices used in drainage ditches. DESIGN CRITERIA: • Width - variable • Length - 2 times width • Depth - 2 ft. nunimum storage - 1800 cubic feet/acre (equals L x W x D) ?'I-12 March, 1993 - •1111;;1 J'` h ` \ , 1 1 1 ? ;' . ;rt?, .'t?t ) 1IY" 7 7 )t: .y 'WA \ t ` )? ? n ., ,- ) . '?) j• a o , ` d ? 1- m W ? O w m 0 N V a cr. ° m 7. V) v '? N it ill ? li!'II IIIII ? I;?I Iillll m IIIII -_ .111111 _ ?- IIIII =1 11= ? ??, ?, !IIIII ? 0-. IIIiI ? iIIII ,. IIIII ? = a J oou Z _ ? IIIII CL J 11111 ? = w ?o? Hill ° w I_II I - o ?-° __ __ IIIII Q o IIIII 111111111111= ? III I_i ? IIIII pU ? - O -- 0 11111 a IIIII 111111 co = =1 I - O v O O E VI-13 March, 1993 TEMPORARY ROCK SILT CHECK TYPE-A: A temporary rock silt check type-A is a small dam structure with a weir outlet to be used in drainage ditches where they outlet off-site or into streams. Type-A temporary rock silt checks shall be used in the same locations and built in the same manner as the temporary rock sediment dams. The type=A temporary rock silt check however, does not have a defined sediment pit, but utilizes a natural formed pit as a silt storage area. The type-A temporary rock silt check utilizes Class B stone lined with #5 stone in conjunction with a naturally formed storage area to trap sediment. AREAS OF USE: • At outlets of Temporary Diversions, Temporary Silt ditches, channels, and Temporary Slope Drains. • In locations where they can be easily cleaned and maintained on a regular basis. • In locations where runoff is exiting the construction site. DESIGN CRITERIA: Drainage Area Weir Length 1 4 2 6 3 g 4 10 5 12 * or approximately 2/3 width of channel. MATERIALS: • Structural Stone - Class B • Sediment Control Stone - # 5 or # 57 stone • Length of apron - approximately 3 times height l V1-14 March, 1993 I w Q 4t m Cr LO w - v LL ¢. W •. Z (9 z w U) U N W O W m FU Z Cr Co -- CL CD Ooa ¢ -- ?-- - Z J CL W XJL N a F- Q U (D N W W^ z¢ m CO Cr W m O m J (n CL z m u LIJ -1 J O V z J U Z¢ ?- LO O a (n a z O 2 z ?x m (n m O F- V) O J ? Lj i to ¢ 1- N O J z (n () O f- Cr LLJ W 0 0 0 _1 Z V F- V m z " U Cr O ¢ ¢ z O W Cr a: O J W W (n O m CY Z z z m ?- 0.0 O O s- Q Z F- (n W O a N U O z Z 1? m LU ?- Cr_ O W Lf') 1- p ° (n Z L( n? ? vw) ) oL U cc <r ono° w Z zv ) mz O C) W d° Cr O ?- -f; L L y -.1 w z O H (n J O m F- z 0 U F- z w 0 w N aJ w z 0 (n J a m H U Z) m N J ?? z W a Z? J v ?? .X- C o 0> ? U UL7 CD xzz o o m ; C: - 0 w (F Q > Cr_ Q o z N 3 Q O, Co p W m I V) G p X ;? z I 0Va 7 v0 « :? W! _ E F ?i n ¢ VI-15 March, 1993 'TEMPORARY ROCK SILT CHECK TYPE-B: -A temporary rock silt check type-B (also called check dam) is a small dam with a weir used to reduce gullying in drainage ditches that are to be filled or permanently stabilized at a later date. These type-B rock silt checks help reduce the flow velocity and are generally made of class-B stone. They are used in ditches during construction where the grade meets and/or exceeds 3%. AREAS OF USE: • In channels, roadside ditch outlets, temporary silt ditches, and temporary diversions. In conjunction with type-B silt basins. DESIGN CRITERIA: Center of rock silt check shall be at least I foot lower than the outer edges (top of channel sides) i • The spacing (ft.) _ (3 / % of ditch grade) X 100 ft. V1-to March, 1993 II , 1-- W F- mU _ W a Z Jm JQ O o I 0= 0 Z Z O I W - n cr-uo 0 w ; ! Lij -- Z > mZOW (n [L ,z OZ2Fz0 ¢ Z JUaI-WCr• O a W a Z F- =O. awac• o a 1 (f) -•m UOm > (n. (r-LL. W W W O O (Y N J m (n Li a W (n m W O - - U h O C C Q o = '-' U 0 d O C ¢ W > c W Li- c 0 o F LL) w LO Ln <r 4a m m l I) 11l qq N Q, , 1 1 .1 1 1 J 4 • m? • r W CL CO ,r >- 111 F- g m QU) ? - z 0 O U Z ~ . . O O U Z ¢ U O I \I N O O w a U X r? l M w (n z (n W F- a o F-- O a F-(nmJ??F-J O oUazmu 1 Z LL - a Z). _, v J Jill L Ill • T, z O = } > Z ?A U .- ° z ""F = VO a J (n W tl (n W O > ;?•' m u ?a O m m CL Y U w U -. n V?J v cal U oom voce mow: O ?Q a- CC <r- C) z z z Q a E-- _o ,,, I o F - I -H o - n C; 7 a, V1-17 March, 1993 TEMPORARY ROCK SEDIMENT DArs TYPE-B: A temporary rock sediment dam type-B is a small dam structure with a weir outlet and a built-in sediment basin. Type-B temporary rock sediment dams shall be used in drainage ditches to detain sediment-laden runoff and to trap sediment to protect receiving streams and adjacent property. The type-B temporary rock sediment dams utilize class-B stone lined with #5 or #57 stone in conjunction with a built in basin to trap sediment. They shall not be used in live streams. i { AREAS OF USE: • At outlets of temporary diversions, temporary silt ditches, channels, and temporary slope drains. • In locations where the dam can be cleaned and maintained on a regular basis. • In locations where runoff is exiting the construction site. • In small natural drainage turnouts. DESIGN CRITERIA: DRAINAGE AREA MINIMUM WEIR LENGTH acres 1 4.0 2 6.0 3 8.0 4 10.0 _ 5 12.0 Storage capacity - 1800 cubic ft./ acre to be cleaned out when half full (approximately 3-4 times a year). • Side slopes - 2 :1 (or flatter). • Structural stone - class B stone. • Sediment control stone - #5 or #57 stone. • Length of apron - approximately height of dam. VI-20 March, 1993 C z O G '- t Cl- - o o. z . U' , u w cn 0 o Q F- 0 Q w >w _ i W Q]J W O V Uw ~ LL z UI - J W 03 W O - Z W WJ N r J t-- w m X - ' © - - O w z a - , r" Co ` Ll- a Z O O _ w \ U) z > O ILI: O A' 0 2 J C U U) I- U III Cf) LLJ L lY a a W C] < m _ x z a< inz o ?o°-F-? W<w <E-- wz? z CCrw zma C) Wz E- Z 1OE 0.O COoaF- w v W U «o -; a V) Zz...0.H °_oinFwm?r-oao ?nv3 z` z H aaz°0EEn00AHz C, CL O 0. ... W 0. V? O 0.? z F- O m E- W w W E- W L) F 0. Z? 41) m C 0. w < W A O a (? L wE^z< L?WZ-'?-A E--cno,•,? o? <zw Z V] U 0. W m U1 OU W\ z O U) J C _ U O 0. O U) ? 0 w J F- F- w- U) Z CD cn w= o? C z CD ?-, Z J w z U Z LLJ - m cn = U -f L.Li cn Z 0 LL cl? w U 0 O O 0. 0 LL 0 w?ooo©o -j p'p er©N 2 . a w aW 'u -Nrfvln as a O aIN 7- CD m LLJ I- Q LLJ 'r z zf ?r Q? W cn `'?z w=z U Q L- ? Q J. ~ Q E-;, L-J?: -e f n I_L_I ZI 0 <11 a: ; z Z CD: Q - CD: I Z: Z; Q J5 C; O; p W `I M ?) 0 Ld a CI mI O? I ZI ¢ VI-21 March, 1993 y? ?f 5 /o jc S? 3? 5 p 'z 6 A Cre Cr -- C, 25+40 4 2't cmp 25+00 20+00 16+00 78" CMP C-,-ee _ 15+00 - - Sheet 3-of 5 - - 5+00 D+00 5+00 ? x rl pl\ Q PA4 ?a dd IV ?v li ?-v 60+00 55+00 50-x-00 Sheet 5 o- f 5 END CDnSrnucT?Dn