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HomeMy WebLinkAbout20021169 Ver 2_Complete File_20060820stem_ PROGRAM RECEIPT September 20, 2006 Glen Futrell Highcroft Investors P O Box 3557 Cary, NC 27519 Project: County: DWQ #: USACE Action ID: EEP No. Amount Paid: Check Number: Highcroft Village Wake ward. 02-1169 V a. 2006-40419-292 B '3-0 ? O to ILF-2006-4769 $6,962.00 3035 (IPG Highcroft Village LLC) F@[99WRO HP 2 6 2006 DENN • WATNR QuALITy WO WO MO STQRA1 * The North Carolina Ecosystem Enhancement Program (NCEEP) has received checks as indicated above as payment for the compensatory mitigation requirements of the 401 Water Quality Certification/Section 404 Permit issued for the above referenced project. This receipt serves as notification that the compensatory mitigation requirements for this project have been satisfied. You must also comply with all other conditions of this certification and any other state, federal or local government permits or authorization associated with this activity. The NCEEP, by acceptance of this payment, acknowledges that the NCEEP is responsible for the compensatory mitigation requirements associated with the project permit and agrees to provide the compensatory mitigation as specified in the permit. The mitigation will be performed in accordance with the Memorandum of Understanding between the NC Department of Environment and Natural Resources and the US Army Corps of Engineers dated November 4, 1998, as indicated below. River Basin Wetland Credits Stream Credits Buffer I Buffer II CU (Sq. Ft.) (Sq. Ft.) Ri arian Non-Riparian Coastal Marsh Cold Cool Warm Cape Fear 03030002 0 0.30 0 0 0 0 0 0 Please note that a payment made to the Ecosystem Enhancement Program is not reimbursable unless a request for reimbursement is received within 12 months of the date of the receipt. Any such request must also be accompanied by letters from the permitting agencies stating that the permit and/or authorization have been rescinded. If you have any questions or need additional information, please contact David Robinson at (919) 715-2228. Sincerely, William D. Gilmore, PE Director cc: ?Cyndi Karoly, Wetlands/401 Unit Monte Matthews, USACE-Raleigh Eric Kulz, DWQ-Raleigh File PrOte &' 1!g oar .fta to North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net Ecosystem PROGRAM INVOICE August 30, 2006 Glen Futrell Highcroft Investors P O Box 3557 Cary, NC 27519 Project: Highcroft Village County: Wake EEP File No: OLF-2006-4769 DWQ No: 02-1169 USACE Action ID: 200640419-292 You have elected to satisfy the compensatory mitigation requirements of the Section 401/404 permit issued for the above reference project through payment of a fee to the North Carolina Ecosystem Enhancement Program (NCEEP). In accordance with 15A NCAC 2H.0500, the amount you owe is based upon the FY 2006-07 Fee Schedule and has been calculated as follows (Please note: payment of wetlands is calculated in increments of 0.25 acres). If you have any questions concerning this payment, please call David Robinson at 919-715-2228. Riparian Wetlands 0 acres x $ 27,847.00 = $ Non-Riparian Wetlands 0.50 acres x $ 13,924.00 = $ 6,962.00 Saltwater Wetland 0 acres x $139,235.00 = $ Stream 0 linear feet x $ 232.00 = $ Buffer -Zone 1 0 square feet x $ .96 = $ Buffer - Zone 2 0 square feet x $ .96 = $ TOTAL AMOUNT DUE $ 6,962.00 Please mail a check payable to NCEEP for the Total Amount Due to the address below, and enclose a copy of this invoice. NCDENR Ecosystem Enhancement Program 1652 Mail Service Center Raleigh, NC 27699-1652 Please note that a payment made to NCEEP is not reimbursable unless a request for reimbursement is received within 12 months of the date of the receipt. Any such request must be accompanied by letters from the permitting agencies stating that the permit and/or authorization have been rescinded. If the payment check's account name is not the same as the permit holder's name, please include a signed statement that the check is being written on behalf of and with full knowledge of the permit holder. YOU MUST BE IN POSSESSION OF THE PAYMENT RECEIPT FROM NCEEP PRIOR TO COMMENCING THE ACTIVITIES AUTHORIZED BY THE DEPARTMENT OF ARMY 404 PERMIT AND/OR THE 401 WATER QUALITY CERTIFICATION. cc: Cyndi Karoly, Wetlands/401 Unit Monte Matthews, USACE-Raleigh Eric Kulz, DWQ- Raleigh p F4 k@9:" (. DWP (p Todd Preuninger, Withers & Ravenel-Raleigh (fax) P. ?J !.5 ?U? File S E P 7 2006 R.P.sbring... 1r ••• Prot" oar fta& DENR - WATER QUALiTY Mi R WETLANDS AND STORMWATER BRANCH North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net Ecosystem PROGRAM August 15, 2006 Todd Preuninger Withers & Revenel 111 MacKennon Drive Cary, NC 27511 Project: Highcroft Village Subdivision County: Wake 02 9 CPFC)5 The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCEEP will be approved. This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404 Permit/401 Certification within this time frame, this acceptance will expire. It is the applicant's responsibility to send copies of the 404/401/CAMA permits to NCEEP. Once NCEEP receives a copy of the 404 Permit and/or the 401 Certification an invoice will be issued and payment must be made. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following table. RIVER BASIN Cape Fear CU 03030002 Wetland-Riparian (ac) 0.150 Stream-Warm (ft) - Wetland-Non-Riparian (ac) - Stream-Cool (ft) - Coastal Marsh (ac) - Stream-Cold (ft) - Buffer-Zone 1 (s ft) - Buffer-Zone 2 (s ft) - Upon receipt of payment, NCEEP will take responsibility for providing the compensatory mitigation for the permitted impacts up to a 2:1 mitigation-to-impact ratio, (buffers, Zone 1 up to a 3:1 ratio and Zone 2 up to a 1.5:1 ratio). The type and amount of the compensatory mitigation will be as specified in the Section 404 Permit and/or 401 Water Quality Certification, and/or CAMA Permit. The mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact David Robinson at (919) 715-2228. Sincerely, illihm D. Gilmore, PE Director cc: Cyndi Karoly, Wetlands/401 Unit U f J Monte Matthews, USACE-Raleigh Eric Kulz, DWQ-Raleigh File A UG "Ong L- KhA" ... PrO Oar Sta& North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net O?O? W AT ?9?G Michael 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 21, 2006 DWQ Project # EXP 02-1169 Wake County Highcroft Investors, LLC Attn: Mr. Glenn Futrell P.O. Box 3557 Cary, NC 27519 Subject Property: Highcroft Village Subdivision UT to Bachelor Branch [030605, 16-41-6-2-(2), WS-1V, NSW] Approval of 401 Water Quality Certification with Additional Conditions-Express Review Program Dear Mr. Futrell: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact 147 linear feet of stream and 0.154 acres of wetland for the purpose of constructing the residential subdivision, as described within your Pre-construction Notification Application dated August 21, 2006. The impacts are covered by General Water Quality Certification Number(s) 3374 and 3402. The Certification(s) allow you to use Nationwide Permit(s) NW12, NW18, and NW39 when issued by the US Army Corps of Engineers (USACE). In addition, you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, and Non-discharge regulations. Also, this approval to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 Permit. This approval is for the purpose and design that you described in the modifications to your original request (PCN dated August 21, 2006). If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H.0506 (h). This written approval requires you to follow the conditions listed in the attached Water Quality Certifications (GC 3374 and 3402) and the additional conditions listed below. 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733-6893 / Internet: httt):Hh2o.enr.statc.nc.us/newettands Noy` Caro na A turaAm An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Highcroft Investors, LLC Page 2 of 4 August 21, 2006 The Additional Conditions of the Certification are: 1. Impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification are met. No other impacts are approved including incidental impacts: Impact Type Amount Approved nits Plan Location or Reference Stream 147 linear feet August 21, 2006 PCN page 4 Temporary Stream 24 linear feet August 21, 2006 PCN page 4 Wetland 0.154(acres) August 21, 2006 PCN page 4 2. No Waste, Spoil, Solids, or Fill of Any Kind No waste, spoil, solids, or fill of any kind shall occur in wetlands or waters 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. 3. Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased borrow pits associated with the project. c. Sufficient materials required for stabilization and/or repair of erosion control measures and stormwater routing and treatment shall be on site at all times. 4. Sediment and Erosion Control Measures 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 devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within two (2) months of the date that the Division of Land Resources has released the project. 5. Protective Fencing The outside boundaries of wetlands or waters along the construction corridor approved under this authorization shall be clearly marked with orange warning fencing (or similar high visibility material) prior to any land disturbing activities to ensure compliance with 15A NCAC 2B .0233 and GC 3402. 6. Culvert Installation Culverts required for this project shall be installed in such a manner that the original stream profiles are not altered. Existing stream dimensions (including the cross section dimensions, pattern, and longitudinal profile) must be maintained above and below locations of each culvert. Culverts shall be designed and installed to allow for aquatic life movement as well as to prevent head cutting of Page 3 of 4 August 21, 2006 the streams. If any of the existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a perched manner, the pipes shall be removed and re- installed correctly. Culvert(s) shall not be installed in such a manner that will cause aggradation or erosion of the stream up or down stream of the culvert(s). Installation of culverts in wetlands must ensure continuity of water movement and be designed to adequately accommodate high water or flood conditions. Existing stream dimensions (including the cross section dimensions, pattern and longitudinal profile) shall be maintained above and below locations of each culvert. Placement of culverts and other structures in waters, streams, and wetlands must be placed below the elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20 percent of the culvert diameter for culverts having a diameter less than 48 inches, to allow low flow passage of water and aquatic life. The applicant is required to provide evidence that the equilibrium shall be maintained if requested in writing by DWQ. The establishment of native, woody vegetation and other soft stream bank stabilization techniques must be used where practicable instead of rip rap or other bank hardening methods. If'rip rap is necessary, it shall not be placed in the stream bed, unless specifically approved by the Division of Water Quality. Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of Completion" form to notify NCDWQ when all work included in the §401 Certification has been completed. The responsible party shall complete the attached form and return it to the 401 /Wetlands Unit of the NC Division of Water Quality upon completion of the project. Please send photographs upstream and downstream of each culvert site to document correct installation along with the Certificate of Completion form. 7. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands and waters in order to assure compliance for future wetland and water impacts. These mechanisms shall be put in place prior to impacting any wetlands or waters approved for impact under this Certification Approval and Authorization Certificate. Construction Stormwater Permit NCGO10000 Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of Land Resources (DLR) or a DLR delegated local erosion and sedimentation control program, an NPDES General stormwater permit (NCG010000) administered by DWQ is automatically issued to the project. This General Permit allows stormwater to be discharged during land disturbing construction activities as stipulated by conditions in the permit. If your project is covered by this permit [applicable to construction projects that disturb one (1) or more acres], full compliance with permit conditions including the sedimentation control plan, self-monitoring, record keeping and reporting requirements are required. A copy of this permit and monitoring report forms may be found at http: //h2o. enr.state. nc. us/su/Forms Documents. htm. 9. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. Highcroft Investors, LLC - Page 4 of 4 August 21, 2006 10. Notification of Construction i he applicant and/or authorized agent shall contact the DWQ Express Review Program in writing at the letterhead address within ten (10) days of the commencement of construction. Violations 6f any condition herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon expiration of the 404 Permit. If you do not accept any of the conditions of this Certification (associated with the approved wetland or stream impacts), 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. Any disputes over determinations regarding this Authorization Certificate (associated with the approved buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is subject to review as provided in Articles 3 and 4 of G.S. 150B. 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 Lia Myott or Cynthia Van Der Wiele at 919-733-1786. AWK/cvdw/lem Enclosures: GC 3374 GC 3402 Certificate of Completion Zerely Alan W. Klimek, P.E. cc: USACE Raleigh Regulatory Field Office Eric Kulz, DWQ Raleigh Regional Office DLR Raleigh Regional Office File Copy Central Files Todd Preuninger, Withers and Ravenel, Inc., 111 MacKenan Drive, Cary, NC 27511 ?QF WATF9 Q Michael F. Easley, Governor G William G. Ross Jr., Secretary co North Carolina Department of Environment and Natural Resources 0 .? Alan W. Klimek, P.E. Director Division of Water Quality EXPRESS PERMIT REVIEW PROGRAM Division of Water Quality Department of Environmental and Natural Resources 401 Oversight/Express Review Permitting Unit Street Address: 2321 Crabtree Boulevard, Suite 250 Raleigh, NC 27604-2260 Mailing Address: 1650 Mail Service Center Raleigh, NC 27699-1650 Contact Information: Phone # Fax #: 919-733-0203 919-733-6893 Fax To: Todd Preuninger Glenn Futrell Subject: Highcroft Village Subdivision Number of pages including cover sheet: 5 Notes or special instructions: Fax #: 238-2099 463-9983 Date: August 21, 2006 The original will be sent in the mail. If you have questions please call Lia Myott at 733-9502. r N hCarolina Naturally 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone (919) 733-1786 / Fax (919) 733-6893 Internet: http://l12o.enr.state.nc.us/ncwetlands An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10°x6 Post Consumer Paper p?0? W A T ?9pG r p ^C Michael 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 21, 2006 DWQ Project # EXP 02-1169 Wake County Highcroft Investors, LLC Attn: Mr. Glenn Futrell P.O. Box 3557 Cary, NC 27519 Subject Property: Highcroft Village Subdivision UT to Bachelor Branch [030605, 16-41-6-2-(2), WS-IV, NSW] Approval of 401 Water Quality Certification with Additional Conditions-Express Review Program Dear Mr. Futrell: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact 147 linear feet of stream and 0.154 acres of wetland for the purpose of constructing the residential subdivision, as described within your Pre-construction Notification Application dated August 21, 2006. The impacts are covered by General Water Quality Certification Number(s) 3374 and 3402. The Certification(s) allow you to use Nationwide Permit(s) NW 12, NW 18, and NW39 when issued by the US Army Corps of Engineers (USACE). In addition, you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, and Non-discharge regulations. Also, this approval to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 Permit. This approval is for the purpose and design that you described in the modifications to your original request (PCN dated August 21, 2006). If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H.0506 (h). This written approval requires you to follow the conditions listed in the attached Water Quality Certifications (GC 3374 and 3402) and the additional conditions listed below. 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733-6893 / Internet: htto://h2o enr state.nc.us/ncwetlands Nom` Caro na ?tura!<y An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Highcroft Investors, LLC Page 2 of 4 August 21, 2006 The Additional Conditions of the Certification are: 1. Impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification are met. No other impacts are approved including incidental impacts: Impact Type Amount Approved nits Plan Location or Reference Stream 147 linear feet August 21, 2006 PCN page 4 Temporary Stream 24 linear feet August 21, 2006 PCN page 4 Wetland 0.154(acres) August 21, 2006 PCN page 4 2. No Waste, Spoil, Solids, or Fill of Any Kind No waste, spoil, solids, or fill of any kind shall occur in wetlands or waters 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. 3. Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased borrow pits associated with the project. c. Sufficient materials required for stabilization and/or repair of erosion control measures and stormwater routing and treatment shall be on site at all times. 4. Sediment and Erosion Control Measures 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 devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within two (2) months of the date that the Division of Land Resources has released the project. 5. Protective Fencing The outside boundaries of wetlands or waters along the construction corridor approved under this authorization shall be clearly marked with orange warning fencing (or similar high visibility material) prior to any land disturbing activities to ensure compliance with 15A NCAC 2B .0233 and GC 3402. 6. Culvert Installation Culverts required for this project shall be installed in such a manner that the original stream profiles are not altered. Existing stream dimensions (including the cross section dimensions, pattern, and longitudinal profile) must be maintained above and below locations of each culvert. Culverts shall be designed and installed to allow for aquatic life movement as well as to prevent head cutting of Highcroft Investors, LLC Page 3 of 4 August 21, 2006 the streams. If any of the existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a perched manner, the pipes shall be removed and re- installed correctly. Culvert(s) shall not be installed in such a manner that will cause aggradation or erosion of the stream up or down stream of the culvert(s). Installation of culverts in wetlands must ensure continuity of water movement and be designed to adequately accommodate high water or flood conditions. Existing stream dimensions (including the cross section dimensions, pattern and longitudinal profile) shall be maintained above and below locations of each culvert. Placement of culverts and other structures in waters, streams, and wetlands must be placed below the elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20 percent of the culvert diameter for culverts having a diameter less than 48 inches, to allow low flow passage of water and aquatic life. The applicant is required to provide evidence that the equilibrium shall be maintained if requested in writing by DWQ. The establishment of native, woody vegetation and other soft stream bank stabilization techniques must be used where practicable instead of rip rap or other bank hardening methods. If rip rap is necessary, it shall not be placed in the stream bed, unless specifically approved by the Division of Water Quality. Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of Completion" form to notify NCDWQ when all work included in the §401 Certification has been completed. The responsible party shall complete the attached form and return it to the 401 /Wetlands Unit of the NC Division of Water Quality upon completion of the project. Please send photographs upstream and downstream of each culvert site to document correct installation along with the Certificate of Completion form. 7. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands and waters in order to assure compliance for future wetland and water impacts. These mechanisms shall be put in place prior to impacting any wetlands or waters approved for impact under this Certification Approval and Authorization Certificate. 8. Construction Stormwater Permit NCG010000 Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of Land Resources (DLR) or a DLR delegated local erosion and sedimentation control program, an NPDES General stormwater permit (NCGO10000) administered by DWQ is automatically issued to the project. This General Permit allows stormwater to be discharged during land disturbing construction activities as stipulated by conditions in the permit. If your project is covered by this permit [applicable to construction projects that disturb one (1) or more acres], full compliance with permit conditions including the sedimentation control plan, self-monitoring, record keeping and reporting requirements are required. A copy of this permit and monitoring report forms may be found at http://h2o.enr.state.nc.us/su/forms Documents.htm. 9. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. Highcroft Investors, LLC Page 4 of 4 August 21, 2006 10. Notification of Construction The applicant and/or authorized agent shall contact the DWQ Express Review Program in writing at the letterhead address within ten (10) days of the commencement of construction. Violations of any condition herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon expiration of the 404 Permit. If you do not accept any of the conditions of this Certification (associated with the approved wetland or stream impacts), 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. Any disputes over determinations regarding this Authorization Certificate (associated with the approved buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is subject to review as provided in Articles 3 and 4 of G.S. 150B. 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 Lia Myott or Cynthia Van Der Wiele at 919-733-1786. AW K/cvdwllem Enclosures: GC 3374 GC 3402 Certificate of Completion Si U61", Alan W. Klimek, P.E. cc: USACE Raleigh Regulatory Field Office Eric Kulz, DWQ Raleigh Regional Office DLR Raleigh Regional Office File Copy Central Files Todd Preuninger, Withers and Ravenel, Inc., 111 MacKenan Drive, Cary, NC 27511 SENDING CONFIRMATION DATE AUG-21-2006 MON 16:35 NAME DWQ?-WETLANDS TEL 9197336893 PHONE : 94639983 PAGES : 5/5 START TIME : AUG-21 16:33 ELAPSED TIME : 01'12" MODE : ECM RESULTS : OK FIRST PAGE OF RECENT DOCUMENT TRANSMITTED... ?O( W 4TE-A MRAad r. rallur, Gnr.mnr OG W01- n Rrwa lr,. S-11Y Nnr1A C_h. DWarmraa ul Cmronn-,-. Wraml Also rraca AW W xllmek. P k. Ur- Wilk,DfW-rb•Inl EXPRESS PERMIT REVIEW PROGRAM Division of Water Quality Department of Environmental and Natural Resources 401 Oversight/Express Review Permitting Unit Street Address: 2321 Crabtme Boulevard, Suitc 250 Raleigh, NC 27604-2260 Mailing Address: 1650 Mail Servicc Center Raleigh, NC 27699-1650 Contact Information: Phone, #: 919-713-0203 Fax #: 919-733-6893 Fax To: Todd Preuninger Fax fl: 238-2099 Glenn Futrell 463-9983 Subject: Higllcrofl Village Subdivision Date: August 21, 2006 Number of pages including cover sheet: 5 Notes or special instructions: Th i¢inal will be scot iD the mail. Ifxeu have-questigr snl ast call 1 is Myon at 733-9502. _ e?fn"'.wv 401 tNad0vP.+yvm Rule.. AamiRY6 Von 16%MMIk 1k1Came..R.1H0 Akrltr C-h.M WAW 310 C+6naa tlark•eN, S- M. Ra'arrh, Nwrh r:erWs s77W rhena (919)'111 IMS/Fa. (alai ?!1.6r91 Ant"0PP-t0AIAm .Ar1m L,"W- 6ARtO1e1'9n PMCawmarPW 08/21/06 08:03 FAX 9195354545 Todd Preuninger Withers & Revencl 111 MacKennon Drive Cary, NC 27511 WITHERS & RAVENEL INC. 0 002 rtem R41C?, la . ement 96618 `'ro PROCiRAMI ithers (f 4299S August 15, 2006 R dy eNY Project: Higheroft Village Subdivision County: Wake The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCEEP will be approved. This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404 Permit/401 Certification within this time frame, this acceptance will expire. It is the applicant's responsibility to send copies of the 404/401/CAMA permits to NCEEP. Once NCEEP receives a copy of the 404 Permit and/or the 401 Certification an invoice will be issued and payment must be made. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following table. RIVER BASIN Cape Fear Cu 03030002 Wetland-Riparian ac wetland-Non-Riparian (ac) 0.150 _ Stream-Warm ft Stream-Cool ft - - Coastal Marsh ac - Stream-Cold 11 - _ Buffer-Zone 1 s ft - Buffer-Zone 2 (sq ft) - Upon receipt of payment, NCEEP will take responsibility for providing the compensatory mitigation for the permitted impacts up to a 2:1 mitigation-to-impact ratio, (buffers, Zone 1 up to a 3:1 ratio and Zone 2 up to a 1.5:1 ratio). The type and amount of the compensatory mitigation will be as specified in the Section 404 Permit and/or 401 Water Quality Certification, and/or CAMA Permit_ The mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact David Robinson at (919) 715-2228. Sincerely, p D. Gilmore, PE Director cc: Cyndi Karoly, Wetlands/401 Unit Monte Matthews, USACE-Raleigh Eric Kutz, DWQ-Raleigh File ... Pro" Our Stag R;,P,storu'c... E North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www,nceep.net AUG-21-2806 MON 07:52 TEL:9197336893 NAME:DWO-WETLANDS P. 2 WITHERS (X RAVEN EL ENGINEERS I PLANNE7Rtr' I SUAYW August 17, 2oo6 Ms. Lia Myott, Express Review Coordinator i ---, NCDENR, Division of Water Quality tj L-. D I 2321 Crabtree Boulevard 7 r?? Suite 250 y X006 Raleigh, North Carolina 27604 WFTcarD;Arvo <<'f;TER sr0Rr.aV4TE BP R RE: Highcroft Village Subdivision ANCH DWQ EXP. No. 02-1169 V.2 Wake County Ms. Myott: Please find attached plans and specifications in support of the 4o1 express review application provided. The revisions are pursuant to you comments provided on August 11, 2oo6. We offer the following responses to the information provided. Wetland & Stream Impacts: a. We have included a copy of the delineation map submitted to the USACCIE for approval with field surveyed wetland delineation data. b. We have listed a range of mitigation payments as the USACCIE has yet to assign our mitigation requirements. The developer proposes to provide mitigation payments as required by the USACCIE to the NCDENR-EEP. c. We have included a cross-section for the proposed culvert crossing for the stream impacts. Stormwater Management Plans: a. The ligustrum screen is a requirement of the Town of Cary. It is intended to visually screen the BMP's from the surrounding parcels and minimize any aesthetic impacts that may arise from Iiving adjacent to a storm water management practices. We do not agree with the Tovv;-. of Cary's assessment of need for this screen material, but must comply with their requirement for plan approval. b. Note 2 on sheet 713 of the plans requires that all areas within two feet in elevation of the normal pool shall be planted with a combination of Panicum Clandestinum (deer tongue) and Pennisetum Glaucum(pearl millet). Please note we are not aware of specific littoral shelf planting requirements associated with storm water wetlands. We understand this practice to be more associated with the construction of wet detention ponds. c. We have updated our design parameters for the storm water management devices to meet the 2 to 5 day drawdown requirements. Streets: a. The Tr?wn of Cary requires street stubs in all directions at intervals of 1,250 to 1,500 fee'. The Planning Director may waive these requirements in cases where stubs are not practicable. In the case of Highcroft Village this requirement was waived on the southern portions of the parcel due to existing development to the east and south and a stream buffer to the west. These requirements were not waived on the northern section because similar restrictions do not exist. The developer does not have any plans for, nor is under contract to purchase the Alma M. Stitt property. However, we suggest the stub as shown would allow iii MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com 7040 Wrightsville Avenue i Suite 1o1 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: 910.842.9392 1 fax: 91o.842.8o19 full access to the Stitt property without the need to cross the riparian feature internal to the property, thereby reducing the potential of future impacts. b. The Town of Cary did not specifically require the northwest access road in the location shown. However, there exists a zoning condition that only allows one road access to Green Hope School Road for the parcel. An internal crossing of the subject feature is required to access the northwest corner of the site. Based on our previous layout and engineering work, we concluded the proposed roadway configuration, as opposed to a series of driveways or a cul-de-sac produced the minimum disturbance to the wetland areas. We trust the above information with the attached plans and calculations with assist in the approval of the above referenced project. We appreciate your assistance regarding this matter. Sincerely, ITHERS & RAVENEL, INC. )as6n A. Bertoncino, PE Attachments CC: Mr. Todd Preuninger, Withers & Ravenel Ms. Ginger Warner, Highcroft Investors, LLC WITHERS &-K- RAVEN EL ENGINEERS I PLANNERS I SURVEYORS STORM WATER MANAGEMENT SUPPORT DATA & CALCULATIONS HIGHCROFi'VILLAGE SUBDIVISION DWQ. EXP. 02-1169 V. 2 Cary, Wake County, North Carolina WR Project # 204191.0 U,b 0, DENh, • I'VATER QUALITY WETS AND STORMWA E B%CH Prepared By: WITHERS & RAVENEL, INC 111 MacKenan Drive Cary, North Carolina 27511 X9.1 Jason Bertoncino, PE L- August 18, 2oo6 ill MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com 7040 Wrightsville Avenue i Suite 1o1 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: g1o.842.9392 i fax: g1o.842.8o1g DWQ Project No. oz- - //(,q V- 7- DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATI (please complete the following information): Project Name : / flGZb FT V, - P,-/A 5 6 Contact Person: Nc"tic-' Phone Number: (?t?q) q6?i- 33`}U For projects with multiple basins, specify which basin this worksheet applies to: Bm?> 1 Permanent Pool Elevation 3 73 . o0 ft. (elevation of the orifice invert out) Temporary Pool Elevation 370. o O ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area 5, 600 sq. ft. (water surface area at permanent pool elevation) Drainage Area 7 ac. (on-site and off-site drainage to the basin) Impervious Area 2. 9 ac. (on-site and off-site drainage to the basin) Forebay Surface Area 850 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0"-9" Surface Area 96 0 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area 960 sq. ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area 830 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume , p cu. ft. (volume detained on top of the permanent pool) SAIDA used /• O o (surface area to drainage area ratio)* Diameter of Orifice A 25 in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project Applicants Initials 4 The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetiands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Best Management Practice Design Criteria - Constructed Wetlands - BMP#1 Drainage Area 7.09 ac Impervious Surface 2.98 ac Imp. Surf. Infrast. 1.16 ac. Imp. Surf. Lots 1.82 ac. Impervious Surface % 42.0% Required SA/DA: 1.80 % Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 40 1.73 2 50 2.06 Surface Area Required: 5,547 sf (Drainage Area * SA/DA * 43,560) 1" Runoff Volume Estimate 11,022 cf (0.05+0.009(lmp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Storage Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 373 5,600 6,414 cy 14,576 cy 374 7,227 8,163 cy 375 9,098 Qallowable 11,022 cy X 1 hr = 0.0638 cfs 48 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 1 ft Area 1.908 in^2 Orifice Diameter 1.56 in (4*Area*3.14)^0.5 Qallowable 11,022 cy X 1 hr = 0.0255 cfs 120 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 1 ft Area 0.763 in^2 Orifice Diameter 0.99 in (4*Area*3.14)^0.5 Use Orifice Diameter 1.25 in . DWQ Project No. OZ - 116 9 v. 2 DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATIO (please complete the following information): Project Name : H m wc'o? V' I-LAG6 - P,/A5c Contact Person: M64?!u BET-TyXx-1AJ6 Phone Number: For projects with multiple basins, specify which basin this worksheet applies to: Rwtt"' 2. Permanent Pool Elevation 343.00 ft. (elevation of the orifice invert out) Temporary Pool Elevation '340. 00 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area Temporary Pool Volume /3, ZOO sq. ft 12-28 ac. 4.62 ac. Z, 000 sq. ft 4.620 sq. ft 4 600 sq. ft /, 9 D sq. ft Z5. (, /5 cu. ft (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* SAIDA used Z. Iq Diameter of Orifice Z-0 in. II. REQUIRED ITEMS CHECKLIST (volume detained on top of the permanent pool) (surface area to drainage area ratio)* (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. , IM, The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Best Management Practice Design Criteria - Constructed Wetlands - BMP#2 Drainage Area 12.28 ac Impervious Surface 6.62 ac Imp. Surf. Infrast. 2.09 ac. Imp. Surf. Lots 4.53 ac. Impervious Surface % 53.9 % Required SA/DA: 2.19 % Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 50 2.06 3.9 60 2.40 Surface Area Required: 11,729 sf (Drainage Area * SA/DA * 43,560) 1" Runoff Volume Estimate 23,856 cf (0.05+0.009(Imp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 343 13,200 14,000 cy 25,615 cy 344 14,800 11,615 cy 344.75 16,172 ize for 2 Day Drawdown ble 23,856 cy X 1 hr = 0.1381 cfs 48 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.875 ft Area 4.414 in^2 Orifice Diameter 2.37 in (4*Area*3.14)^0.5 23,856 cy X 1 hr = 0.0552 cfs 120 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.875 ft Area 1.766 in^2 Orifice Diameter 1.50 in (4*Area*3.14)^0.5 Use Orifice Diameter 2 in DWQ Project No. nZ " //(oCf V. Z DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION (pl ase complete the foll wing information1: Project Name : / I L_?A ' ASE J- Contact Person: ?jp ERro?.win 0 Phone Number: (grot 4ro9- 3'340 For projects with multiple basins, specify which basin this worksheet applies to: C3MP? Permanent Pool Elevation 34 3•oo ft. (elevation of the orifice invert out) Temporary Pool Elevation 3 40• 60 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area _3,S00 sq. ft. (water surface area at permanent pool elevation) Drainage Area 3 ac. (on-site and off-site drainage to the basin) Impervious Area /• / ac. (on-site and off-site drainage to the basin) Forebay Surface Area 600 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0"-9" Surface Area 1,166 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area /, /55 sq. ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area 490 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume 6,977 cu. ft. (volume detained on top of the permanent pool) SAIDA used / OS% (surface area to drainage area ratio)* Diameter of Orifice AO in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project JAO The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see hftp://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Best Management Practice Design Criteria - Constructed Wetlands - BMP#3 Drainage Area 4.83 ac Impervious Surface 1.11 ac Imp. Surf. Infrast. 0.28 ac. Imp. Surf. Lots 0.83 ac. Impervious Surface % 23.0 % Required SA/DA: 1.08 % Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 20 0.97 3 30 1.34 Surface Area Required: 2,274 sf (Drainage Area * SA/DA * 43,560) 1" Runoff Volume Estimate 4,503 cf (0.05+0.009(Imp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Storage Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 343 3,300 3,710 cy 5,877 cy 344 4,120 2,167 cy 344.5 4,548 Orifice Size for 2 Day Drawdown Qallowable 4,503 cy X 1 hr = 0.0261 cfs 48 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.75 ft Area 0.900 in^2 Orifice Diameter 1.07 in (4*Area*3.14)^0.5 Qallowable 4,503 cy X 1 hr = 0.0104 cfs 120 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.75 ft Area 0.360 in^2 Orifice Diameter 0.68 in (4*Area*3.14)^0.5 Use Orifice Diameter 1 in 36C 355 350 345 340 a rr PROPO ED XI -nNG GROUND 98 LF? 'n " ? .- KUP o 0) 0 o 10+00 HIGHCROFT VILLAGE WAKE North Carolina 11+00 STREAM CHANNEL IMPACT 1 CROSS SECTION DETAIL ROAD FILL 1"=5' Vertical 12+00 1"=50' Horizontal WITMERB &- RAVENEL RECESSES I PLANNERS 1 SURVEYORS 08/21/06 08:03 FAX 9195354545 Todd Preuninger Withers & Revenel 111 MacKennon Drive Cary, NC 27511 WITHERS & RAVENEL INC. Y em a emtent PROGRAM August 15, 2006 Project: Highcroft Village Subdivision County: Wake 10002 -41ec" 461t, ?t 810 hers ? 06 Rdl,? The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibilityof the applicant to contact these agencies to determine if payment to the NCEEP will be approved. This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404 Permit/401 Certification within this time frame, this acceptance will expire. It is the applicant's responsibility to send copies of the 4041401/CAMA permits to NCEEP. Once NCEEP receives a copy of the 404 Permit and/or the 401 Certification an invoice will be issued and payment must be made. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following table. RIVER BASIN Cape Fear Cu 03030002 Wetland-Riparian ac 0.150 Stream-Warm fl - Wetland-Non-Riparian ac - Stream-Cool ft - Coastal Marsh ac - Stream-Cold 11 - Buffer-Zone l s ft - Buffer-Zone 2 (sq ft - Upon receipt of payment, NCEEP will take responsibility for providing the compensatory mitigation for the permitted impacts up to a 2:1 mitigation-to-impact ratio, (buffers, Zone 1 up to a 3:1 ratio and Zone 2 up to a 1.5: l ratio). The type and amount of the compensatory mitigation will be as specified in the Section 404 Permit and/or 401 Water Quality Certification, and/or CAMA Permit. The mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact David Robinson at (919) 715-2228. Sincerely, *4 ?, D. Gilmore, PE Director cc: Cyndi Karoly, Wetlands/401 Unit Monte Matthews, USACE-Raleigh Eric Kulz, DWQ-Raleigh File Pat* r' ... ... pro", Oar Stag North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www,nceep.net AUG-21-2006 MON 07:52 TEL:9197336893 NAME:DWO-WETLANDS P. 2 AUG 2 1 2006 DENR - WATER Office Use Only: USACE Action ID No. DWQ No. Lg 016 old??"P AUXZ 0 06lr'-? (a L ?D WATER Q ITy Lt, a AND STORMWATER BRANCH Form Version March 05 (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 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: 12, 18, 39 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), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: Highcroft Investors, LLC Mailing Address: Attn: Glenn Futrell PO BOX 3557 CM, NC 27519 Telephone Number: (919) 463-9940 Fax Number: (919) 463-9983 E-mail Address: fuQ trell(a jlgcorp.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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 117 MacKenan Drive CM, NC 27511 Telephone Number: 919-469-3340 Fax Number: 919-238-2099 E-mail Address: tpreuninger(a)withersravenel.com Page 1 of 8 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: Highcroft Village Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 0734.02-76-0395 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Highcroft Village Directions to site (include road numbers/names, landmarks, etc.): From intersection of US 64 and Hwy 55 go north on Hwy 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go gpproximately 1000 feet and site will be on your left. 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): 35.8015978 ON 78.8750136 °W 6. Property size (acres): 36.47 7. Name of nearest receiving body of water: Bachelor Branch 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:Hh2o.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: Currently the site is wooded. Land use in the vicinity is primarily residential. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of residential housing. Typical heavy equipment such as excavators will be utilized install the infrastructure (i.e. roads and utilities) 11. Explain the purpose of the proposed work: The project is needed to meet the growing demand for housing in the immediate area. 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. Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None Anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. 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. 1. Provide a written description of the proposed impacts: The proposed impacts consist of 147 linear feet of stream channel impact and 0.154 acres of wetland impacts associated with the construction of roadways, lot fill and BMP devices. Additionally, temporary impacts will consist of 24 linear feet of stream channel impact for utility line crossings. Page 3 of 8 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 flood" g. Wetland Impact Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Nearest Impact (indicate on map) herbaceous, bog, etc.) Floodplain Stream (acres) es/no linear feet Impact 2 Fill Headwater Forest No 250 ft 0.049 Impact 3 Fill Headwater Forest No 400 ft 0.034 Impact 4 Fill Headwater Forest No 400 ft 0.071 Total Wetland Impact (acres) 0.154 3. List the total acreage (estimated) of all existing wetlands on the property: <1 acre 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 Type of Perennial or Average Impact Area of Number Stream Name Impact Intermittent? Stream Width Length Impact indicate on ma Before Impact linear feet acres Impact 1 UT to Bachelor Branch Culvert Perennial 4 147 0.013 Impact 5 UT to Bachelor Branch Temporary Perennial 4 24 0.002 Total Stream Impact (by length and acreage) 171 0.015 Impact 5 is a temporary impact due to utility line installation. 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 Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact indicate on ma ocean, etc. acres NA NA NA NA NA Total Open Water Impact (acres) NA 6. List the cumulative impact to all Waters of the U.S. resulting from the project: Stream Impact (acres): 0.015 Wetland Impact (acres): 0.154 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) 0.17 Total Stream Impact (linear feet): 171 Page 4 of 8 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. 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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: In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings gh the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress and to allow emergency vehicle access if one entrance is blocked. 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 Page 5 of 8 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/ncwet]ands/strmgide.htm]. 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. Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. 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 htip://h2o.enr.state.nc.us/M/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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): 0.5 Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ? No N 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)? Page 6 of 8 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 (Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 213 .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No 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. I Impact I Required Zone* Multiplier 7, I 1 I NA 13 (2 for Catawba) I NA 2 NA 1.5 NA Total I NA I I NA * 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 2B.0242 or.0244, or.0260. NA 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. The proposed impervious surface for this project is expected to be approximately 39% following build-out. During construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes, as per the Town Page 7 of 8 of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. 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. Sanitary Sewer 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 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: As stated by the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality October 3, 2002, version 1.6 prepared by the North Carolina Division of Water Quality, most residential subdivisions are unlikely to require a cumulative impacts analysis. The Hi croft Village property does not meet any of the three criteria of private development projects that can clearly result in cumulative impacts. The applicant will comply with the applicable local and state regulations pertaining to water quality, therefore, we do not anticipate downstream degradation. 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). Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 Chapter 7: Development and Design Standards Sec. 7.10 Connectivity Any residential development shall be required to achieve a connectivity index of 1.2 or greater unless the Planning Director determines that this requirement is impractical due to topography, existing development, and/or natural features. In Street Connectivity Diagram [Reserved] the event that this requirement is waived, a six-foot pedestrian trail shall be provided to link any cul-de-sacs within a residential development in which the required connectivity index has been waived. A connectivity index is a ratio of the number of street links (road sections between intersections and cul-de-sacs) divided by the number of street nodes (intersections and cul-de-sac heads). The following illustration provides an example of how to calculate the Index. Street links on existing adjacent streets that are not part of the proposed subdivision are not included in the connectivity Index calculation. NOTE: The measure of connectivity Is the number of street links divided by the number of nodes. Nodes exist at street Intersections as well as cul-de-sac heads. Links are the stretches of road that connect nodes. Stub outs shall also be considered as links. In this example, there are 11 links (circles) and nine nodes (stars); therefore, the connectivity index is 1.22 (B) Street Arrangement (1) The proposed public or private street system shall be designed to c) ,' provide vehicular Interconnections to all similar or compatible adjacent ,{ c uses (existing and future) when such interconnections would facilitate internal and external traffic movements in the area. Such connections shall be provided during the initial phase of the project approximately every 1,250 to 1,500 linear feet for each direction (north, south, east, west) in which the subject property abuts similar or compatible uses. If the common property boundary in any direction is less than 1,250 linear feet, the subject property will be required to provide an interconnection if it is determined by the Planning Director that the Interconnection in that direction can best be accomplished through the subject property. When the Planning Director deems a vehicular connection impractical, he/she can increase the length requirement and/or require pedestrian connections. The Planning Director may delay the interconnection If such interconnection requires state approval or will result in significant hardship to the property owner. The intent of this standard is to improve access/egress for Town neighborhoods, provide faster response time for emergency vehicles, and Improve the connections between neighborhoods. (2) Any development of more than 100 residential units or additions to existing developments such that the total number of units exceeds 100 shall be required to provide vehicular access to at least two public streets unless such provision is deemed impractical by the Planning Director or Town Engineer due to topography, natural features, or the configuration of adjacent developments. (3) Where new development is adjacent to vacant land likely to be divided in the future, all streets, bicycle paths, and access ways in the development's proposed street system shall continue through to the boundary lines of the area under the same ownership as the subdivision, Town of Cary Land Development Ordinance Page 7-83 OF WA TFRQ Michael F. Easley, Governor M ? William G. Ross Jr., Secretary `O ( COr North Carolina Department of Environment and Natural Resources 0 r Alan W. Klimek, P.E. Director Division of Water Quality August 11, 2006 DWQ EXP No. 02-1169 v.2 Wake County CERTIFIED MAIL: RETURN RECEIPT REQUESTED Highcroft Investors, LLC Attn: Mr. Glenn Futrell P.O. Box 3557 Cary, NC 27519 Subject Property: Highcroft Village Subdivision REQUEST FOR MORE INFORMATION-EXPRESS REVIEW PROGRAM Dear Mr. Futrell: On August 10, 2006, the Division of Water Quality (the "Division") received your PCN application for the above-referenced project. The DWQ has determined that this information is incomplete. Please provide the additional information requested below in order to continue review of your project and to prevent denial of your application as required by 15A NCAC 2H .0506: Wetland and Stream Impacts: a. Please provide the final wetland determination map that was submitted for USACE approval and an accurate enumeration of all of the wetlands on the subject property. b. Please provide an explanation for NCEEP requested Riparian wetland mitigation of 0.25- 0.5 acres. c. Please provide cross section details showing the provisions for aquatic life passage. 2. Stormwater Management Plans: a. Please explain the "Ligustrum BMP screen". b. Please include a planting plan for the littoral shelf. c. Given the design parameters submitted, the drawdown periods on BUT #2 and #3 are too short. Please lengthen the drawdown times. 3. Streets: a. Based on the plans you submitted, the road on the west side of the site is stubbed (near the Alma M. Stitt property). Please explain the future plans for this road. DWQ is concerned about the potential for cumulative impacts and recommends a cul-de-sac. b. Please provide a letter from the Town of Cary that states the requirement for the northwest corner access road. Please respond within three (3) days of the date of this letter by sending five (5) copies of the above information in writing. This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please be aware that any impacts requested within your application are not authorized (at this time) by the DWQ. 401 Oversight/ Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733-6893 / Internet: http://h2o.enr.state.nc.us/ncwetlands One N Caro a AWMA91111 An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Highcroft Village Subdivision Page 2 of 2 August 11, 2006 Please contact Cynthia Van Der Wiele at (919) 715-3473 or Lia Myott at (919) 733-9205 if you have any questions regarding or would like to set up a meeting to discuss this matter. Sincerely, Cyndi Karoly, 401 Oversight/Express Review Permitting Unit CBK/cvdw/lem cc: USACE Raleigh Regulatory Field Office DWQ Raleigh Regional Office File Copy Central Files Todd Preuninger, Withers and Ravenel, Inc., 111 MacKenan Drive, Cary, NC 27511 Filename: 021169HighcroftViliageSDv2(W a ke)EXP+hold ?QF w'4T F90 Michael F. Easley, Governor ?0 C, William G. Ross Jr., Secretary r North Carolina Department of Environment and Natural Resources O Alan W. Klimek, P.E. Director Division of Water Quality August 11, 2006 DWQ EXP No. 02-1169 v.2 Wake County CERTIFIED MAIL: RETURN RECEIPT REQUESTED Highcroft Investors, LLC Attn: Mr. Glenn Futrell P.O. Box 3557 Cary, NC 27519 Subject Property: Highcroft Village Subdivision REQUEST FOR MORE INFORMATION-EXPRESS REVIEW PROGRAM Dear Mr. Futrell: On August 10, 2006, the Division of Water Quality (the "Division") received your PCN application for the above-referenced project. The DWQ has determined that this information is incomplete. Please provide the additional information requested below in order to continue review of your project and to prevent denial of your application as required by 15A NCAC 2H .0506: 1. Wetl d and Stream Impacts: Please provide the final wetland determination map that was submitted for USACE approval and an accurate enumeration of all of the wetlands on the subject property. U lease provide an explanation for NCEEP requested Riparian wetland mitigation of 0.25- Y.Please .5 acres. provide cross section details showing the provisions for aquatic life passage. p gustrum BMP screen". 7 ? b. Please include a planting plan for the littoral shelf. OAe_ 2 - 'hrc - c. Given the design parameters submitted, the drawdown periods on BMP #2 and #3 are too short. Please lengthen the drawdown times. - `'.ec t,-,( 0 cn (Cc_cca-f,-) , 2. Sto ater Management Plans: Please ex lain the "Li 3. Streets: a. Based on the plans you submitted, the road on the west side of the site is stubbed (near the Alma M. Stitt property). Please explain the future plans for this road. DWQ is concerned about the potential for cumulative impacts and recommends a cul-de-sac. b. Please provide a letter from the Town of Cary that states the requirement for the northwest corner access road. Please respond within three (3) days of the date of this letter by sending five (5) copies of the above information in writing. This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please be aware that any impacts requested within your application are not authorized (at this time) by the DWQ. 401 Oversight / Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 /FAX 919-733-6893 / Internet: htta://h2o.en r. state. nc. us/ncvvetlands Noce hCarolina Naturally An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper WITHERS &R"ENEL August 9, 2oo6 US Army Corps of Engineers Attn: Mr. Monte Matthews 65o8 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 Re: Highcroft Village Subdivision Request for 404/401- Certification W&R Project Number - 02040191.00 Dear Mr. Matthews & Ms. Karoly, ?D D AUr, 1 Q 2006 bthn W,gl'f " X'WDSftSTQN Qaury 'R 8MACH On behalf of Highcroft Investors, LLC, we are requesting authorization from the USACE and NC-DWQ to use NWP 12, 18 & 39 for the construction of a residential subdivision. The subject property is located on the south side of Green Hope School Road (SR 1621) approximately looo feet west of the intersection of Green Hope School Road and NC HWY 55• The site is approximately 36.47 acres in size and contains an unnamed tributary to Bachelor Branch in the Cape Fear River Basin. The Hydrologic Unit Code for this basin is 03030002. The Water Quality classification is C; NSW, and the stream index is 16-41-6-2-(1). Project History Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. Proposed Impacts The proposed impacts consist of 147 linear feet of important/perennial stream channel, o.15 acres of wetland impacts for road crossings, lot fill and stormwater BMP's. In addition, 24 linear feet of stream will be temporarily impacted for utility line installation. Impacts are summarized in the table below as well as in the PCN form. NWP # Impact # Line et SF Acres 39 Impact 1 1 7 58 0.01 39 Impact 2 211 0.049 39 Impact NA 1472 0.034 18 impact NA 125 0.071 12 impact 5 2A _ 25 0.002 Total = =_? 1 1 727 o.i7 ENGINEERS I PLANNERS I SURVEYORS &Y-Poa-1t L.4 YZ NC-Division of Water Quality Attn: Ms. Cyndi Karoly 2321 Crabtree Blvd Raleigh, North Carolina 276o4 iii MacKenan Drive i Cary, North Carolina 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com 7040 Wrightsville Ave i Suite 1o1 i Wilmington, North Carolina 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 d`? ? J wi ?L? 3 ? Gee ,?-?al,? Avoidance and Minimization In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress into the site and to allow access for emergency vehicles in the event that an entrance is blocked. Stormwater Management Plan The proposed impervious surface for this project is expected to be approximately 39% following build-out. During construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes constructed wetlands, as per the Town of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. Mitigation Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. Please feel free to call if you have questions or require additional information. Sincerely, WITHERS &-RAVENEL, INC. Todd Preuninger Attachments 1) PCN Form 2) Site plans 3) Agent Authorization 4) USGS Quad 5) Wake County Soil Map 6) Stormwater Management Plan Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. UIP 02+- 11 to et V (If anv narticular item is not annlicable to this tiroiect. please enter "Not Annlicable" or "N/A".) 1. 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: 12, 18, 39 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 Maria eme? Environmental Concern (see the top of page 2 for further details), check II. Applicant Information AUG p 2006 1. Owner/Applicant Information DEN i4x" Name: Highcroft Investors, LLC Mailing Address: Attn: Glenn Futrell PO BOX 3557 Cary, NC 27519 Telephone Number: (919) 463-9940 Fax Number: (919) 463-9983 E-mail Address: gfutrell@,ilgcoip.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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 11 I MacKenan Drive Carv. NC 27511 Telephone Number: 919-469-3340 Fax Number: 919-238-2099 E-mail Address: treuninger@withersravenel.com Page 1 of 8 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: Highcroft Village Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 0734.02-76-0395 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Highcroft Village Directions to site (include road numbers/names, landmarks, etc.): From intersection of US 64 and Hwy 55 go north on Hwa 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go approximately 1000 feet and site will be on your left. 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): _ 35.8015978 ON 78.8750136 °W 6. Property size (acres): 36.47 7. Name of nearest receiving body of water: Bachelor Branch 8. River Basin: Cane 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: Currently the is wooded. Land use in the vicinity primarily residential. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of residential housing. Typical heavy equipment such as excavators will be utilized install the infrastructure (i.e. roads and utilities) 11. Explain the purpose of the proposed work: The project is needed to meet the growing, demand for housing in the immediate area. 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. Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None Anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. 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. 1. Provide a written description of the proposed impacts: The proposed impacts consist of 147 linear feet of stream channel impact and 0.154 acres of wetland impacts associated with the construction of roadways, lot fill and BMP devices. Additionally, temporary impacts will consist of 24 linear feet of stream channel impact for utility line crossings. Page 3 of 8 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 Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Nearest Impact (indicate on map) herbaceous, bog, etc.) Floodplain Stream (acres) ( es/no) (linear feet) Impact 2 Fill Headwater Forest No 250 ft 0.049 Impact 3 Fill Headwater Forest No 400 ft 0.034 Impact 4 Fill Headwater Forest No 400 ft 0.071 Total Wetland Impact (acres) 0.154 3. List the total acreage (estimated) of all existing wetlands on the property: <1 acre 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 Type of Perennial or Average Impact Area of Number Stream Name Impact Intermittent? Stream Width Length Impact (indicate on ma) Before Impact (linear feet) (acres) Impact 1 UT to Bachelor Branch Culvert Perennial 4 147 0.013 Impact 5 UT to Bachelor Branch Temporary Perennial 4 24 0.002 Total Stream Impact (by length and acreage) 171 0.015 Impact 5 is a temporary impact due to utility line installation. 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 Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact indicate on ma ocean, etc. (acres) NA NA NA NA NA Total Open Water Impact (acres) NA 6. List the cumulative impact to all Waters of the U.S. resulting from the project: Stream Impact (acres): 0.015 Wetland Impact (acres): 0.154 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) 0.17 Total Stream Impact (linear feet): 171 Page 4 of 8 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. NA 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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: In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings _through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress and to allow emergency vehicle access if one entrance is blocked. 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 Page 5 of 8 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://l12o.enr.state.nc.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. Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to Jurisdictional wetlands. 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/wrp/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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): 0.25 - 0.5 Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) 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)? Page 6 of 8 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 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 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. * Impact Required Zone i-,,.,..e f o,N Multiplier A44.*, +,*_., 1 NA 3 (2 for Catawba) NA 2 NA 1.5 NA Total NA NA * 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 2B .0242 or .0244, or .0260. NA 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. The proposed impervious surface for this project is expected to be approximately 39% followiniz build-out. Durine construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes, as per the Town Page 7 of 8 of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. 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. Sanitary Sewer 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 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: As stated by the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality October 3, 2002, version 1.6 prepared by the North Carolina Division of Water Quality, most residential subdivisions are unlikely to require a cumulative impacts analysis. The Hi hg croft Village property does not meet any of the three criteria of private development projects that can clearly result in cumulative impacts. The applicant will comply with the applicable local and state regulations pertaining to water quality, therefore, we do not anticipate downstream degradation. 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). 6ho /0 Applicant/Agent's Signature / Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 ,17 on • LJ rM j1 0 �.^, �� t" ,► --.�." ...- / ,! IIS. ` � , _ . _ , r ,.i ,1162[' ' l �� I k 17 "�� • _ ,i� � _; �30r%�f �.� - - � f--_ „=�ht' `_:= O M/,, `�".�' ,�..�r-_;;....ems .:"�^ i Q 1�` � a _ - O' �ir�• �6 ! ��, ��� � ft' _�ml-;!/ I'M • _� V"� � �- ter. -+!'-. / !1 i� )' ' � �' �, ` � • ,.-, , ...-`rte- � � ,, _ r � - � r �1 ` - r •�� t S 14,18 -,Z-- NAA k 1 � Oil - ,�r�-/ WITHERS C�< RAVENEL Hightcroft Village Site Boundary N ENGINEERS 1 PLANNERS I SURVEYORS W E 111 MacKenan Drive Cary, North Carolina 0 2,000 4,000 S telephone: 919.469.3340 www.withersravenel.com FvPt 9CC 1 INUIVlo1=r% `rte (Joins sheet 35) WSC 0 Cr82 CrB2 e +! sez ?a Wy : µ WsC2 to s9 m a? '° wv <?y ; Fi N 62 WsC2 CrC2 GrB2 CrB2 _ WsE r 5 CrC2 4?e? Y f od h ope WsB2 ?. .? CrC2 -= WsBt'+aC2 WsC2 wsC2 \ WsC2 WsB2 CrC2 - CrB2 WsB2 Ws82 1 WsC2 WsC WsE y l MfB2 # C E,. i C W A 8.. {.r82 0 . wY WsC2 WsE C 62 CrB2 crc2' ^WsB2 o \Cr82 CrCY / WY WsB2 C2 s1:2 WsB2 I WsB2 ^r ' Woe2. C rB2 Wv \ ? cz ' ?wsE 1 r \ c \ \ WsC2 ? ? \ WsE I .... CrE .. ? . 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JI WITHERS RAVENEL ENGINEERS I PIANNE R5 1 SURVEYORS Site Access/Agent Authorization Form Project Name: Property Owner/Contract Purchaser: 4#<G -ZpFT lNdEST©Q5, L.LC Address: o--.,T ©FIEiGE &x 3S51 (fARV _ L.?eR,a.l•yiti 7-7S11? Phone: (gldr) 43 -Y94v Fax: `710) 44 ,3 - / &-!?> Email: GFUT2az.L@ JL xC0Z?. corn I hereby grant Withers and Ravenel, INC permission to conduct environmental studies on the property described above. In addition, I authorize Withers and Ravenel to act on my behalf as my agent when conducting site meetings and/or correspondence (i.e. permit applications etc.) with the USACE and the NC - Division of Water Quality, if necessary. Property Owner: UtLEx*J FU77261-i- Date: o (Print Name) (Signature) NORTH CAROLINA ECOSYSTEM ENHANCEMENT PROGRAM, NCEEP IN-LIEU FEE REQUEST FORM Revised 5/1612006 Print this form, fill in requested information, sign and date, and either mail to NCEEP, 1652 Mail Service Center, Raleigh, NC 27699-1652, or fax to 919-715-2219. Attachments are acceptable for clarification purposes. All correspondence from NCEEP will be to the Applicant, with a copy to the Applicant's Agent (if indicated). __......._........ -........ __.... _......... -.----........ .__._........ .__........._........__.... _._......_.._._........ _...... _.... __._..._...... _...... _......_..... ._.......__...._....... CONTACT INFORMATION APPLICANT APPLICANT'S AGENT (optional) 1. Business or Individual Name ..............._....... __........._....... .........__._._.......__.._.... ........... _........ ....... HighCroft Investors LLC Withers and Ravenel -......___..... __.... .._-_.-._._....__....___._.__..._..._... _._....-..... _.._.._._... 2..Street Address or P O Box i _ ..................__....._......_.....—-.........._...---..........._-_........._....................._.............. PO BOX 3557 111 MacKenan Drive _.......__....-...._..._...-........_....-........_...._.__...........__._.........._..._._........__..i 3. City, State, Zip - ...._......__ .............__....__......-------- Cary, NC 27619 Cary, NC 27511 4. Contact Person _._._._........ ---..__.......__..__......__.._.._... Glenn Futrell Todd Preuninger _........ _........ -......._..._.._..._._ ................._._....._......_..............._......._....... _.... 5. Telephone Number 463-9940 469-3340 ---.._....___..._......____...__...___._.....__---_.._...... _.... _....._..__.._......... 6. Fax Number ( 463-9983 _........__....----._......._........_... _...... ._..__....... _.... __...._......._ .......... ...... 238-2099 -......._.......... ...... ........... _..._.._........... ..._..... _...... r _........._...-....--_--._...... ------- -....__....._._.... 7. E-Mail Address (optional) - __..I _..._.......__......._.._..._....._..._....._._........ ......._..._...__...... gfutrell@jlgcorp.com tpreuninger@withersravenel.com ... INFORMATION _. _......... ........ _ ........ ...... ..__................... _......... ........ __....... .... -..... _....... ._........._............... __......... ......... __............. 8. Project Name ............. .....__ ............... _ ....._.._..... ................. _.... --,.......__................._.........._......__................._........._.........._..................__................._ Highcroft Village Subdivision ......... -._ ..............__._.................__.............._...._..........._...__.........._........_.............._._ _........... ......... _.... .............__..... 9. Project Location (nearest town, city) .............__................... ................. __.................. ._........... ........__..................._........._...... _.............. ......__................. _...... ............. _....................._......... ;Cary, Wake County, NC I 10. Cat Long Coordinates (optional) _ 35 8015978 ON 78 8750136 °W .. 11. Project County ; Wake 12 River Basin .......... __ .................... -- .......... __ ...... __ .. _ Cape Fear _..._..__. ... __ ......... ......... ....._. _ 13. Cataloging Unit (8-digit) _._. _..... .......... __ ...... .... .. ..._. .. 03030002 ' _ .................._._................... _......... ........ ---................ _..... ............ _-...... ............ ..__ ....-........... _........ ..........._................ 14. Riparian Wetland Impact (ac.) (e.g., 0.13) ... 0.15 ......_._.. ...... _._...................- _.............. .. ..... 15. Non-Riparian Wetland Impact (ac.) ....__ . ....... ...... o _ ............ ........ _........... .......--........ ...._..... _........... _.... _............. ..... --.......... _....... _...................__................__............ ..... 16. Coastal Marsh Impact (ac.) .. -...................._..................... _......... .......... ---.................. _.................... --........ ..._.... __.............. .....__.................... _...... ..............__..................... _........ ...........__..................... 0 ............. _..... 17. Stream Impacts (ft.) (e.g. 1,234) ....... .._,....,,,,_...,. _....,..,...,.._.............. ....... ...... Warm ' ._............ ......._.......... .... -............ .....,._......... Cool _ _ __ ? ..... Cold 0 0 0 .... ................... _.......... _..._._............... _.......... _......- .............. ___........ ........ __....... ..........._......... _........ _................. 18. Buffer Impact-Zone 1 (sq. ft.) (e.g. 12,345) .....,,,..,.,..__............. ....._.,,.".. .,...,.__,....,,......-..................._............. ,,._ _....,...,... - ,..,.......... .. _ ... _ _ .,.. _ .... 0 ...... ........_ ................._............._....._.........__.....__.......-----.................._...................._.................._.._.................._...... 19. Buffer Impact-Zone 2 (sq. ft.) ..........................._......._..................---..................__................_.._....................._..................__..............._..__.........-........._......................_.................._._................................. 0 - ............_._. ....... ............. _........ _......... __.......... _.... __........ ...... _.... ........ _.-............... .... _............. ........ _........... _... IMPORTANT . ...... ............_................... __....... .... ..---._...................--.......... .......... _................... _........... ........ _.... .............. ._............ ....... __................... _................... Signature of Applicant or Agent: Check (?) below if this request is a: 6?r ? revision to a current acceptance, or Date: /?o O (? ? re-submission of an expired acceptance (...._. _..... _....... _._. __........__..._.__........._......._._.......... _..._ ............._._.._.. ._._......__..... _........... __.._..__....... __..... _..... ............. ........ _.._.......... _.... ..._.......__.._._.......... _........ _........ ___............... _..... _....... . Buffer mitigation applicable only in the Neuse, Tar-Pa mlico and Catawba river basins, and the Randleman Lake Water Supply Watershed. For help in determining the Cataloging Unit, go to EPS's "Surf Your Watershed" web page: http://cfpub.epa.gov/surf/locate/index.cfm Direct all questions to Chris Mankoff at 919-716-1921 or chris.mankoff@ncmail.net ti Sy0RM WATER MANAGEMENT' o IMPACT 1 589 SF, 0.01 AC 147 LF CHANNEL YA- 0 ?d 0 fv , co GRAPHIC SCALE 50 0 25 50 100 1 inch m 50 ft. L PROPOSED WETLAND WITHERS RAVENEL L HIGHCROFT VILLAGE WAKE NorihCarolina IMPACT MAP SHEET 2 0 F 4 1NOINININ 1 PIANNINS 1 SURVIVORS J"* / I O i GRAPHIC SCALE 50 o 25 50 loo - - 1 inch = 50 ft. HIGHCROFT VILLAGE PROPOSED WETLAND WITHERB &- RAVENEL IMPACT MAP NNNINNNNN 1 FLANNRRS i SURVIVORS CARP WAKE North Carolina SHEET 4 OF 4 ??? - ?rr / f/ Jr r ! /' - IMPA T 3 ?t ?- r 1,472?SF, 0.03 C l --- w 0 3,t'£5 SIF -0.01 AC / l I I -- 1 t / J r r ./ / / fr 00 r/ ,. l r? J/ J r ! _ I.AJ y /? ! / / r v GRAPHIC SCALE 1 0 50 0 25 50 100 I 1 1 inch = 50 ft. HIGHCROFT VILLAGE PROPOSED WETLAND HERE &- RAVENEL IMPACT MAP RMRI MRRRR 1 PLANNRRR 1 RMRYRrORR CARY WAKE North Carolina SHEET 3 OF ]4 o ? 3 r- a a a a a s a a 0 0 0 ? a 0 0 0 0 0 0 0 0 0 a cc`n cvn LL. LA- V) ? a LL, cn N Zn LL- n r 04 10 r r-) LL _ N I 0 cc) 0) Go It 00 N .- M t0 W U') LO z 3 p N M d U ?- N M M N ta r,, r. O W O J W W W = = O ~ cn in c n :5 in v i C6 wo J J Q u Llr) o W : Z U O N O W W m ^ _ U C > > °L 7 ? ? Uo Ns rA W z d z? J N= N N '? i w o N = W I 3 W I i,99."r / ? iZL •i ' FL,;. ? ;6L.i •QL,: I p911y y`p?y3y ?. 8111 od ooet !18 ?LL = 9lll od 9! 1 _ No I '' r LLJ CA> r Ul) &8? ? W IV% "Nn mil` $? Q , n Q o U r 0 O ® ? O o (J OO / Z 5 i I? W ® ® 2? o o o ® o ?. ry) ? O? O ® O$ o w / U O ® CO o `? - L9l 2 S Gvo l0oH?5 3dOH N332!J g I a ? m 0 Q ? ?I - Moser - m wove Not'" ?n '?MMl -&**.w owum\sowuu\Le110\oel-fo\*o\'H Project Name: HighcroftVilla Project No. DWQ 021169 SUBMITTED DESIGN: (?t?l L I REQUIRED DESIGN: elevations Permanent Pool (ft) 370 3 Temporary Pool (ft) 373 3 ft. depth ok areas Permanent Pool SA (sq ft) 5600 5550 sq. ft. ok Drainage Area (ac) 7.09 Impervious Area (ac) 2.98 42.0% - Forebay (ft2) 850 15.178571 % ok High Marsh (ft2) 1960 35.0 % ok Low Marsh (ft2) 1960 35.0% ok Micropool (ft2) 830 14.821429% ok 100% volumes Temporary Pool (cu ft) 17858 11022 cu. ft. ok other parameters SA/DA 1.8 1.80 - Orifice Diameter (in) 1.75 0.10 cfs drawdown - Design Rainfall (in) 1 2.1 day drawdown ok Linear Interpolation of Correct SAIDA * * * 3 ft. Permanent Pool Depth % Impervious SA/DA from Table Next Lowest 40 1.73 Project Impervious 42.0 1.80 Next Highest _J 50 2.06 F G"" g . //. a6 Ck o? w?L -?I- z 3 dA&,W Project Name: HighcroftVilla Project No. DWQ 021169 DA 2 SUBMITTED DESIGN: REQUIRED DESIGN: elevations Permanent Pool (ft) 339 3 Temporary Pool (ft) 342 3 ft. depth ok areas Permanent Pool SA (sq ft) 13200 11730 sq. ft. ok Drainage Area (ac) 12.28 Impervious Area (ac) 6.62 53.9 % - Forebay (ft2) 2000 15.151515 % ok High Marsh (ft2) 46 35.0 % ok Low Marsh (ft2) 4620 35.0 % ok Micropool (ft2) 1960 14.848485 % ok 100% volumes Temporary Pool (cu ft) 25686 23856 cu. ft. ok other parameters SA/DA 2.19 - Orifice Diameter (in) 2.5 0.2 drawdown - Design Rainfall (in) 1 (:? 1.5 da drawdown check drawc Linear Interpolation of Correct SAIDA * * * % Impervious Next Lowest 50 Project Impervious 53.9 Next Highest 60 3 ft. Permanent Pool Depth SA/DA from Table 2.06 2.19 2.4 Project Name: HighcroftVilla Project No. DWQ 021169 DA 3 SUBMITTED DESIGN: REQUIRED DESIGN.- elevations Permanent Pool (ft) 339.5 3 Temporary Pool (ft) 343 3.5 ft. depth ok areas Permanent Pool SA (sq ft) 3300 2273 sq. ft. ok Drainage Area (ac) 4.83 Impervious Area (ac) 1.11 23.0 % - Forebay (ft2) 500 15.151515 % ok High Marsh (ft2) 1155 35.0 % ok Low Marsh (ft2) 1155 35.0 % ok Micropool (112) 490 14.848485 % ok 100% volumes Temporary Pool (cu ft) 6964 4503 cu. ft. ok other parameters SA/DA 1. 1.08 - Orifice Diameter (in) 1.25 0.0 fs drawdown - Design Rainfall (in) 1.5 d drawdown check drawc Linear Interpolation of Correct SAIDA 3 11. Permanent Pool Depth % Impervious SA/DA from Table Next Lowest 20 0.97 Project Impervious 23.0 1.08 Next Highest 30 1.34 WITHERS & RAVEN EL ENGINEERS I PLANNERS I SURVEYORS Storm Water Management Support Data & Calculations Highcroft Village Subdivision Cary, Wake County, North Carolina Project No.: 204191.0 Prepared by: Withers & Ravenel, Inc. 111 MacKenan Drive oo®e? Cary, North Carolina 27511 •.•`°?1 Jason A. Bertoncino, PE °`$+O July 27, 2006 SEAL' ?--? M ? 25944 E 7/06 iii MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6008 i www.withersravenel.com 7040 Wrightsville Avenue i Suite 101 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: 910.842.9392 1 fax: 910.842.8o1g DWQ Project DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATIO please complete the following inform tion): Project Name : 11 1&#C )26F T - Contact Person: Phone Number: ( 11 ) 444-M40 For projects with multiple basins, specify which basin this worksheet applies to: amp so J_ Permanent Pool Elevation 7 .OD ft. (elevation of the orifice invert out) Temporary Pool Elevation 370• ov ft. lei (elevation of the outlet structure invert in) Permanent Pool Surface Area 5, 4,00 sq. ft. (water surface area at permanent pool elevation) Drainage Area 7.0 ac. (on-site and off-site drainage to the basin) Impervious Area Z • 18 ac. (on-site and off-site drainage to the basin) Forebay Surface Area 6-60 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0"-9" Surface Area ?60 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area 4 '760 sq. ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area 0,30 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume 14, 5 7o cu. ft. (volume detained on top of the permanent pool) SAIDA used /90 (surface area to drainage area ratio)* Diameter of Orifice f, 75 in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. J k15 The basin side slopes are no steeper than 3:1. 1146 A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. lvi? A sediment disposal area is provided. 11-6 Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Project 1 , Project No. ?Gi1;' rLt E, Z??-=111 , G WITHERS &-RAV E N E L Subject # C iZof =r ENGINEERS I PLANNERS I SURVEYORS Date By Sheet No. r JuL- v z 7,Z •??A erg W.G,_ A.?zc ?. =- ?, : •) `?A C'. ?MC-E.vv"'U! ?6_,n 0 AC n f:?A ;f7! c?• ' c,rL- ?• ??•? -r?- __.. QQ ., 1-? -.. ... r- -, r t U.• r ACt, i ) VOL C, F - t G 0 rZ AVE 3?aQ sere. 7? DWQ Project DIVISION OF WATER QUALITY • 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMA ION (please comp ete the following information): Project Name : 1 T iLLAG6 rrr6E I Contact Person: k )Asc" 13L-XTa.uG, n?o Phone Number: 3-S40 For projects with multiple basins, specify which basin this worksheet applies to: 8M P 02 Permanent Pool Elevation Temporary Pool Elevation 39Z. oo ft. 1 339• o o ft. Zoo sq. ft. 12.7-8 ac. • 67- ac, Z oao sq. ft. lo20 sq. ft. sq. ft. /, 960 sq, ft. l0 cu. ft. (elevation of the orifice invert out) (elevation of the outlet structure invert in) (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* (volume detained on top of the permanent pool) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area Temporary Pool Volume SA/DA used Diameter of Orifice II. REQUIRED ITEMS CHECKLIST Z• Z °f (surface area to drainage area ratio)* Z.6 in. (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. JOE A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. DWQ Project DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION lease complete tl}e following information): Project Name : ANA, J FT /icc E- -6 Contact Person: Jkvl B41^O, Pc Phone Number: 9( f9) (z- 33 For projects with multiple basins, specify which basin this worksheet applies to: EM f 3 Permanent Pool Elevation 343.Oy ft. (elevation of the orifice invert out) Temporary Pool Elevation 339.60 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area 3, 300 sq. ft. • t5 5 ac. ac. 500 sq. ft. 11155 sq. ft. /, /5 sq. ft. 490 sq. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* Temporary Pool Volume 6, V 9 cu. ft. SAIDA used Diameter of Orifice 2 II. REQUIRED ITEMS CHECKLIST (volume detained on top of the permanent pool) (surface area to drainage area ratio)* (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. - V-61 Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. WITHERS &RAVENEL ENGINEERS I PLANNERS I SURVEYORS Project i Project No. Subject Date By \\ Sheet No. C) L7 /)n tom' ? F?,I rv N Ai? F'11 4. c? tic A' (.67 } 08. ?? - ,Zu r V A.;b ! t c: C -J.1] I ? AQCA 3,7A--) :s ? I ZO } 4 ` J a, ?? i?r GG' I F rGt: F71-? + ?Ay ZAc? Lk ). ;A 72 (7Z) iFl?` ft?t tom' - U.?? cr• hr,? C'' d - l TA vu OPERATIONS & MAINTENANCE MANUAL Project: HIGHCROFT VILLAGE - PHASE 1 BEST MANAGEMENT PRACTICES 1, 2 & 3 Owners: Highcroft Investors, LLC c/o Colen E. Davidson, Jr. Address: 140 Towerview Court, Cary, North Carolina 27511 Phone Number: 919.463.9940 Prepared by: Withers & Ravenel, Inc Date: August 2, 2006 Project: HIGHCROFT VILLAGE - PHASE 1 Constructed: August 2006 Location: Green Hope School Road, Cary NC Receiving Water Course: Tributary of Batchelor Branch (Cape Fear River Basin) This manual establishes procedures for maintenance and operation of the Highcroft Village - Phase 1 Best Management Practices (BMP) 1, 2 & 3 in accordance with NCDENR rules and regulations. SECTION 1 - MAINTENANCE OF BEST MANAGEMENT PRACTICES Monthly or after every runoff producing rainfall, whichever comes first: a. Remove debris from trash racks b. Check and clear orifice and riser of any obstructions. The detention device should be kept clear of debris such as loose bottles, cans, food containers and other forms of rubbish. Any rodents that have fallen into the device should be removed so that they do not present a source of blockage for the discharge pipe. c. Check pond side slopes; remove trash, repair eroded areas before next rainfall. Rills and gullies should be filled with suitable soil compacted and then seeded. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. II. Quarterly a. Inspect the collection systems (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates, and basin bottoms, and check piping for obstructions. b. Check pond inlet pipes for obstructions. c. Repair any broken pipes. d. Replace riprap that is choked with sediment. III. Semi-Annually a. Remove accumulated sediment from bottom of outlet structure. b. Check pond depth at various locations. If the elevations of the marsh areas exceed the permanent pool elevation, the sediment should be removed to design levels. This shall be performed by excavating the marsh areas six inches below design elevations. Afterwards clean topsoil shall be placed to bring marsh areas back to design elevations and the required plant material reestablished. (see elevation tables below) c. The riser structure should be visually inspected semi-annually for any seepage through mortar joints or cracks in the walls of the structures. The orifice outlets should be cleared of any debris that may build up and the extension should be checked for damage. The drain valve assembly should be operated to ensure that all internal parts remain lubricated and in good working order. d. Conduits should be visually inspected at the joints. Pipes should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear, loss of protective coating, corrosion and blocking. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. IV. General a. Mow side slopes according to the season. Maximum grass height to be six (6) inches. b. Wetland planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland plants should be encouraged to grow in the marsh areas. c. All components of impoundment system to be kept in good working order. d. In case the ownership of the impoundments transfers, the current owner shall, within thirty (30) days of transfer of ownership, notify NCDENR-DWQ of such ownership transfer. BMP #1 p Permanent Pool Elevation 373.00 High Marsh Elevation 372.50 avg. -------------------------------------------- ------ Low Marsh Elevation 372.00 avg. FOREBAY MAIN POND BMP #2 -1 p Permanent Pool Elevation 342.00 High Marsh Elevation 341.50 avq, -------------------------------------------------- Low Marsh Elevation 341.00 avg. + FOREBAY MAIN POND BMP #3 p Permanent Pool Elevation 343.00 High Marsh Elevation 342.50 avg. -------------------------------------------- ------ Low Marsh Elevation 342.00 avg. FOREBAY MAIN POND SECTION 2 - RECORD KEEPING Operation of the storm water detention device should include recording of the following: Semi-Annual Inspection Reports - A collection of written inspection reports should be kept on record in Section 3 of this manual. Inspection should be conducted semi-annually. Observations - All observations should be recorded. Where periodic inspections are performed following significant rainfall, these inspections should be logged into the Periodic Inspection, Operations and Maintenance Form in Section 3 of this manual. Other Operational Procedures - The owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the detention device over time should be recorded on the as-builts. Sedimentation and Dredging - Sedimentation from on-site and off-site soils will eventually result in a decrease of the storage capacity for these ponds and will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas be stabilized with a vegetative ground cover such that it restrains erosion. This would include a periodic application of fertilizer and/or other treatment necessary to promote a stable ground cover and minimize sedimentation to the device. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a ground cover sufficient to restrain erosion. I, (01C0_ E IOW('plstM Y , Member , hereby acknowledge that I am the financially responsible party for Maintenance of these Best Management Practices. I will perform the maintenance as outlined above, as part of the 401 Water Quality Certification and the stormwater regulations for this project. Signature: I, P.-u V a-lo -C vyrw u , a Notary Public for the State of N C- , County of Wa GC- , do hereby certify that A vl d s vK J? personally appeared before me this 3 day of 20 o S,, and acknowledge due execution of the foregoing instrument. Witness my hand and official seal. Seal ??' 4"""°+ DEBORAH NEWMAN NOTARY PUBLIC ?"•°' M WAKE COUNTY, N.C. y Commission Expires 12-15-2008 My commission expires: 11, -(S_ - ZUUrt Date: $ 3 0 ?U'h? A)UMZ4, pr i ? C_d N cwc Df_-L00V-" NeNvwwl_ Section 3 - Inspection Checklist and Periodic Maintenance Reports WETLAND INSPECTION CHECKLIST - Highcroft Village Phase 1, Cary, NC BMP # Date: Time: SPILLWAYS - DRAINS - OUTLETS Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investigative Principal Spillway Type: Trashracks/Debris Cracks/Deterioration Joint Deterioration Improper Alignment Seepage/Piping Undercutting Erosion Debris Drain/Other Outlets Type: Gates/Valves Operability EMBANKMENT -- POOL Check/Circle Condition Noted - Observations 11 Action - Repair Action - Monitor Action -- Investi ative U/S Slope Type: Ve etation/Ri ra Beach in /slides/cracks Undermining/erosion Rodent burrows Crest Type: Ruts/erosion Cracks/settlement Poor alignment D/S Slope Type: Vegetation/erosion Rodent burrows Sloughs/slides/cracks Seepage/wetness Pool Type: Erosion/ round cover Sedimentation Water quality Wetland Vegetation Abutment Type: Vegetation/erosion Slough/slides/cracks Seepage/wetness General Comments, Sketches & Field Measurements PERODIC INSPECTION, OPERATION & MAINTENANCE RECORDS Highcroft Village- Phase 1 BMP # , Cary, NC Date Time Rain " Pool Level Weather General Observations Recorded Conditions or Comments B Date Maintenance Performed Comments Recorded B Date Equipment Operated Comments Recorded B ?OF WATFR p Michael F. Easley, Governor ?o 0 William G. Ross Jr., Secretary 6 North Carolina Department of Environment and Natural Resources 0 Alan W. Klimek, P.E. Director Division of Water Quality EXPRESS PERMIT REVIEW PROGRAM Division of Water Quality Department of Environmental and Natural Resources 401 Oversight/Express Review Permitting Unit Street Address: 2321 Crabtree Boulevard, Suite 250 Raleigh, NC 27604-2260 Mailing Address: 1650 Mail Service Center Raleigh, NC 27699-1650 Contact Information: Phone #: 919-733-0203 Fax #: 919-733-6893 Fax To: Todd Preuninger Glenn Futrell Fax #: 238-2099 463-9983 Subject: Highcroft Village Subdivision Number of pages including cover sheet: 3 Notes or special instructions: Date: August 11, 2006 The original will be sent in the mail. If you have questions please call Lia Myott at 733-9502. No rthCarolma Q manly 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone (919) 733-1786 / Fax (919) 733-6893 Internet: hitp;'ih2u ?nrsttc nc u`ilcwctl?nnls An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper SENDING CONFIRMATION DATE AUG-11-2006 FRI 10:32 NAME DWQ-WETLANDS TEL 9197336893 PHONE : 92382099 PAGES : 3/3 START TIME : AUG-11 10:30 ELAPSED TIME : 0111211 MODE : G3 RESULTS : OK FIRST PAGE OF RECENT DOCUMENT TRANSMITTED... F wA'rp O 9Q W'tF "P Enl"l.nvcmn G AIR .nn O kn„ h . ,icvrcup' y ? NmFt'arNina t,yam,nn yr tn.wmm?itam Nal,?„?I w,.,,y1? ? •i P A4mh, K,nv i4.P C. Ci 11'y U•.rlorlof (nalll. E. EXPRESS PERMIT REVIEW PROGRAM Division of Water Quality Department of Environmental and Natural Resources 401 Oversigbt/Express Review Permitting Unit Street Address: 2321 Crabtree BoulevaM, Suilc 25Q Raleigh, NC 27604-2260 bLaina Address: 1650 Mail Semme Centct Raleigh, NC 21699-1650 Cnntact Information: Phlme 4: 919-733-0203 Paz p: 919-711-6893 Fax To: Todd Prcuttillgcr Fax #: 238-2(199 Glenn Futrell 463-9983 Subject: Highrroft Village Subdivision Date: August 11, 2006 Number of pages including cover sheet : 3 Notes or special Instructions: .VXc griginal. will be scut in the snail. If vouhav e euoigns loase callLia Myutt at 733-9502. rncar? R1- d x.11 MaaR*I,E. .k.. r.?iu?I f tV ll Mail Sonic: fan. Ral<IEF ntVmh Canli,a ::ry9o-1670 :72! CJaCbee ?aItrR,G. Su1e 1111, kaltr,!M1. Nosh I'amlina ]'.%N Mmeial9l'JJ-I'RG 'Pn 1919!:!]6697 ., RNN oe6e,an+p.r.+++., •? f. monra:m f><a,?roa IMI cm.una, PaPat SENDING CONFIRMATION DATE AUG-11-2006 FRI 10:34 NAME DW¢-WE'T'LANDS TEL 9197336893 PHONE : 94639983 PAGES : 3/3 START TIME : AUG-11 10:33 ELAPSED TIME : 00'32" MODE : ECM RESULTS : OK FIRST PAGE OF RECENT DOCUMENT TRANSMITTED... 2?F VJA TFgo O nn?md r. ra.y, nn«,?„ ?t t ? ? ? l Nrtn~ienrv Nntn.1 art, Ana 11q?nnrml o(1^t, mm rtml`ml M1al rta i O ?Wn R' Nl?mk, F F. *MW,rtn rA'x'arn Ahi,l6 EXPRESS PERMIT REN IEW PROC;RAM Division of Water Quality Department of Environmental and Natural Resources 401 OversigbVExpress Review Permitting Unit Street Address: 2321 Crdhtree Boulrn'anl, Suile 250 Raleigh. NC 276(4-2260 Mailing Address: 1650 Mail Service Center Ralci4 NC 27699-1650 Contact Intormstton: Phone #. 919-733-0203 Fax 919-733.6893 Fax To: 'T'odd Preuninger Fax #: 238-2099 Glenn Futrell 463-9983 Subltet: IGglicroll Village Subdivision Date- August 11, 2006 Number of pages including cover sheet : 3 Notts or special instructions: 'rhe original will be sent in the mail If you have nuestioos please call Lia Mvott at 733-95W. ms ,('.rta r.. ;balrrnrl?y -N TcelrhM- R-- "5o lMni IlrNt Mml cnM« r'.nm•. Rd-igh, rrenr M1rotn..T7599.1560 !tat C'n"rm Mnlrvr M, \,t4 :. q. Rale?fi, Nvrtfi !'rnlhn 1lfAM In!nnv?: Ill10:f1YL.?f.3Y1:li.L_R:Cill; ^A< hn Po?,y1:Apn!FnRNARnmMwt ArAm ErMM+ - 5ik Ragiipp,101. Po?1 ronwrrr, FtaEr WITHERS &RAVEN EL August 9, 2006 US Army Corps of Engineers Attn: Mr. Monte Matthews 6508 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 Re: Highcroft Village Subdivision Request for 404/401- Certification W&R Project Number- 02040191.00 ENGINEERS I PLANNERS I SURVEYORS &Lp oa.•%%to a Y2. NC-Division of Water Quality Attn: Ms. Cyndi Karoly 2321 Crabtree Blvd Raleigh, North Carolina 27604 Fqc'(r---199W19 P AUG I 0 zoos Dear Mr. Matthews & Ms. Karoly, u ! K u QTY M CAW,, M On behalf of Highcroft Investors, LLC, we are requesting authorization from the USACE and NC-DWQ to use NWP 12,18 & 39 for the construction of a residential subdivision. The subject property is located on the south side of Green Hope School Road (SR 1621) approximately sooo feet west of the intersection of Green Hope School Road and NC HWY 55• The site is approximately 36.47 acres in size and contains an unnamed tributary to Bachelor Branch in the Cape Fear River Basin. The Hydrologic Unit Code for this basin is 03030002. The Water Quality classification is C; NSW, and the stream index is 16-41-6-2-(1). Project History Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. Proposed Impacts The proposed impacts consist of 147 linear feet of important/perennial stream channel, 0.15 acres of wetland impacts for road crossings, lot fill and stormwater BMP's. In addition, 24 linear feet of stream will be temporarily impacted for utility line installation. Impacts are summarized in the table below as well as in the PCN form. NWP # Impact # Linear Feet SF Acres 39 Impact 1 147 8 0.01 39 Impact 2 NA 211 0.049 39 Impact NA 1472 0.034 18 Impact NA 125 0.071 12 Impact 24 95 0.002 Total 1 1 27 0.1 ill MacKenan Drive i Cary, North Carolina 27511 1 tel: 919.469.3340 1 fax: 919.467.6008 i www.withersravenel.com 7040 Wrightsville Ave i Suite 101 i Wilmington, North Carolina 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 Avoidance and Minimization In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress into the site and to allow access for emergency vehicles in the event that an entrance is blocked. Stormwater Management Plan The proposed impervious surface for this project is expected to be approximately 39% following build-out. During construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes constructed wetlands, as per the Town of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. Mitigation Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. Please feel free to call if you have questions or require additional information. Sincerely, WITHERS &-RAVENEL, INC. Todd Preuninger Attachments 1) PCN Form 2) Site plans 3) Agent Authorization 4) USGS Quad 5) Wake County Soil Map 6) Stormwater Management Plan Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. F.K? 0 a- it b g Y Z (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 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: 12, 18, 39 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, Jap D II. Applicant Information AU ? ?. 0 2006 1. Owner/Applicant Information Name: Highcroft Investors, LLC DENR. WATER QUALITY ...., .??p c70RMWATER BRANCH Mailing Address: Attn: Glenn Futrell PO BOX 3557 Carv. NC 27519 Telephone Number: (919) 463-9940 Fax Number: (919) 463-9983 E-mail Address: fug trellQjlgcorp.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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 117 MacKenan Drive Cary, NC 27511 Telephone Number: 919-469-3340 . Fax Number: 919-238-2099 E-mail Address: tpreuninger(a,withersravenel.com Page I of 8 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: Highcroft Village Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 0734.02-76-0395 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Highcroft Village Directions to site (include road numbers/names, landmarks, etc.): From intersection of US 64 and Hwyy 55 _go north on Hwy 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go approximately 1000 feet and site will be on your left. 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): 35.8015978 ON 78.8750136 °W 6. Property size (acres): 36.47 7. Name of nearest receiving body of water: Bachelor Branch 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: Currently the site is wooded. Land use in the vicinity is primarily residential. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of residential housing. Typical heavy equipment such as excavators will be utilized install the infrastructure (i.e. roads and utilities) 11. Explain the purpose of the proposed work: The project is needed to meet the growing demand for housing in the immediate area. 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. Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None Anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. 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. 1. Provide a written description of the proposed impacts: The proposed impacts consist of 147 linear feet of stream channel impact and 0.154 acres of wetland impacts associated with the construction of roadways, lot fill and BMP devices. Additionally, temporary impacts will consist of 24 linear feet of stream channel impact for utility line crossings. Page 3 of 8 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 Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Floodplain Nearest Stream Impact (acres) (indicate on map) herbaceous, bog, etc.) ( es/no) (linear feet) Impact 2 Fill Headwater Forest No 250 ft 0.049 Impact 3 Fill Headwater Forest No 400 ft 0.034 Impact 4 Fill Headwater Forest No 400 ft 0.071 Total Wetland Impact (acres) 0.154 3. List the total acreage (estimated) of all existing wetlands on the property: <1 acre 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, multi ly length X width, then divide by 43,560. Stream Impact Type of Perennial or Average Impact Area of Number Stream Name Impact Intermittent? Stream Width Length Impact (indicate on ma) Before Impact (linear feet) (acres) Impact 1 UT to Bachelor Branch Culvert Perennial 4 147 0.013 Impact 5 UT to Bachelor Branch Temporary Perennial 4 24 0.002 Total Stream Impact (by length and acreage) 171 0.015 Impact 5 is a temporary impact due to utility line installation. 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 Name Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, Pand estuary, sound, bay, Impact indicate on ma ocean, etc. acres NA NA NA NA NA Total Open Water Impact (acres) NA 6. List the cumulative impact to all Waters of the U.S. resulting from the project: Stream Impact (acres): 0.015 Wetland Impact (acres): 0.154 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) 0.17 Total Stream Impact (linear feet): 171 Page 4 of 8 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. 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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: In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress and to allow emergency vehicle access if one entrance is blocked. 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 Page 5 of 8 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 htt-P:Hh2o.enr.state.nc.us/newetlands/strmP-ide.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. Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. 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/wrp/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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): 0.25 - 0.5 Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) 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)? Page 6 of 8 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 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. Impact I I Required Zone* F o+? Multiplier 7, is«;, „+;__ I 1 I NA 13 (2 for Catawba) I NA 2 NA 1.5 NA Total I NA I I NA * 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 2B .0242 or.0244, or.0260. NA 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. The proposed impervious surface for this project is expected to be approximately 39% following build-out. Durintz construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes, as per the Town Page 7 of 8 of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. 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. Sanitary Sewer XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No N Is this an after-the-fact permit application? Yes ? No N 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 N 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: As stated by the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality October 3, 2002, version 1.6 prepared by the North Carolina Division of Water Quality, most residential subdivisions are unlikely to require a cumulative impacts analysis. The Hi hg_croft Village property does not meet any of the three criteria of private development projects that can clearly result in cumulative impacts. The applicant will comply with the applicable local and state regulations pertaining to water quality, therefore, we do not anticipate downstream 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). __<4 G/Z? /0 Applicant/Agent's Signature / Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 1033 _ B*4 /, opq p \ JA, 1. -?'f.'.. . -: ?f ? \?1f •C "tea. _ 1 ? ,.'!+'1 ? ?.s+ ;% `,I W '? f „?I?V : • Vii; ?*/'_- ?'SS. ,?p,,?yb_ ? ? , ? ? E „? rpen I-If I _ i• n 1. ?_1 •??'? ? ,? ? ?? , J _ ?.. ? o35t X35 ? ? % ?) ?, - _ fir, L., z ('?? 11? t y ?• ' g. 161)'. j: ?J _1 ?, ? •? ? 't 1620, 1. I cem ti f ,? ? l ''? " ? l ,-/"? ,? I Ili ?. a ?- ?: a •? /.• c OI ??\ 1 ,, pp M 15 ± `\ N ? r= . •'? -tip - .•??' 344 r ? ?? ? .`61i? T;` 1,- ? ?1 t. ? ? ?? 1 ',•.I'. ?r? ? T+ls N WITHERS RAVENEL Hightcroft Village Site Boundary ENGINEERS I PLANNERS 1 SURVEYORS W E 111 MacKenan Drive Cary, North Carolina 0 2,000 4,000 S telephone: 919.469.3340 www.wfthersravenel.com FPPt !ec 3 rvvrvro?n *? (Joins sheet 35) wsC V rB2 s82 Cre2' C WsC2 wv !y ; N CrC2 82 GrB2 I CrB2 - . WsC2 o ope WsE r 55 CrC2 r Y r h WsB2 E crc2 ? Ws C2 wse2 ' w9e2 WsBE+ \ WsB2 rc? W C2 `- t i - _=- crez s , ws82 w.e2 WsC2 y' y WsC wsE rE I MtB2 ' i C ti WY WsC2 n C 82 crez \ 0 WsE L W l : C C SBZ 2 I ,Cr82 yy? c rk ' CrC$,,..' f W? I Y-B2 y WsB2 ' WsB2 C WsC2 WaC2 2 a Cr82 WY ? 0 WsE I C ` CrC Cr82 WsC2 2 WsE W rC , CrC2 U! a82 A Wse2 f n CrE %,e n ?' m .CrC2 ? ,? 1N WsRf r r ' t Ws82 R ictcz II CrC CrE . ? `? ! Cr82 '__= •. Crc w .: ? r wse2 ?e , wse2 r 1 \ CrB2 WSC2 5Q , Ws 2 ` a o " __y ` °J S ? U wig" ? y 17 c E. +" WsC2 c'I "CrC2 , t c O GO ?' Y i E \ . 3! WsC2 ' > p o . . yl, $s n ? YV 11 0 .. ? ?" GrQv l m ? s ?'' , `, , s ? i W `,r ` (irB 3 ' y ? in C?B2 .??laB2 ,tom#•?., ?` I ? a.. Z' G? ?_ ?? - ? ?,{ . p \_ CY82 ?, ,, M C2 . iqr• ? r 3 ?2 At r s CrC .+ z' $ N Ws82 ?? ; F Y v CrC ° a ±' ? ? ' Cre2 B ' ? ? ; ? - rC Gr6 ?? ! 2 V W 1 r' Cr Qry ' I - CI N - yam CrC Cr62 W . C S C a WsC2 ,. i,G? c Gre AfA Af CrC2 G" 2 A r ! . M _ 7.. 3E b?c r / ?£ 5' E GrB CrB2 ' o . Ct ? ?7t,,r WsC7 ?U E ({ AfA AU S 55 ? W{K - ? ? . -. .I_nn ]i. O 4.'?I` .tY?M•- G\ '? e>! tea' ?\ij / . . ? ?, (Joins sheet 55) CrC2' WITHERS RAVENEL F..NGINF. F.RS 1 PI.ANN F.RS I SUR VFYO RS Site Access/Agent Authorization Form Project Name: Property Owner/Contract Purchaser: !? .#C-B FT LM1EST4>Q5, LLC Address: o6T OFFIC.& &K 3691 (_JC?R1/ . jZTil L?kR,?L1N/1 2.7 /i Phone: &/ei) 4(o 3 -CJ94y Fax: 6711) 46 3 - Email: 6FU726'zL Cp? J4CwCoV-?, COrv-, I hereby grant Withers and Ravenel, INC permission to conduct environmental studies on the property described above. In addition, I authorize Withers and Ravenel to act on my behalf as my agent when conducting site meetings and/or correspondence (i.e. permit applications etc.) with the USACE and the NC - Division of Water Quality, if necessary. Property Owner: 6LEA-*J FUT2-51-1- Date: d "3d- 0-t? (Print )Name) (Signature) NORTH CAROLINA ECOSYSTEM ENHANCEMENT PROGRAM, NCEEP IN-LIEU FEE REQUEST FORM Revised 5/16/2006 Print this form, fill in requested information, sign and date, and either mail to NCEEP, 1652 Mail Service Center, Raleigh, NC 27699-1652, or fax to 919-715-2219. Attachments are acceptable for clarification pu rposes. All correspondence from NCEEP will be to the Applicant, with a copy to the Applicant's Agent (if indicated). CONTACT INFORMATION APPLICANT APPLICANT'S AGENT (optional) 1. Business or Individual Nam e Highcroft Investors LLC Withers and Ravenel _..._-.__....__..__._.__.....___...-._......__...._.._..__... _._..._...... _........ 2. Street Address or P O Box _.._.._...--_.----- _..___.__........._____......__.__...___.-_........._ PO BOX 3557 ( ..._. 111 MacKenan Drive 3. City, State, Zip Cary, NC 27619 Cary, NC 27511 4. Contact Person _ ....,-... .._..... ._......... __.... _....... --._._....... _._.._..__....... _-. Glenn Futrell ..-_._.. --- - - - - Todd Preuninger ........... Telephone Number _.. -.._...._.__._.__...... ......... ..... --_.... -_...... _...... _......... ; 463-9940 ( .........?----._---.--.-_ 469-3340 6. Fax Number 463-9983 238-2099 7. E-Mail. Address (optional) gfutrell@jlgcorP.com tpreuninger@withersravenel.com ... PROJECT INFORMATION __.... .. .... ......... _ .......... .........__ ............. .._............ ........ _......... .......... __.................... _......... .......... _......... .........................._.............._ _ 8. Project Name ............ _....... ......--....... ............ _........ ........... _..... ....._.._._............. ..... __............._._..... ............ .__-...... ...... _................... .__.................._.................._ Highcroft Village Subdivision __......_..-_-...... _.-...__...... . _ _-.__.......-------..........----......... .......... ._............ _..... _._............... _ 9. Project Location (nearest town, city) __......... ....__.............._.._........ ......... _..... .........._ _....... ..... ......... _....................._...... ............ _............_......._.......... ........_.................... -......... ........... _................... i Cary, Wake County, NC 10 Lat Long Coordinates (optional) 35 8015978 °N 78 8750136 °W _ l i 11. Project County .. .. _ . .. _ _ . Wake 12 River Basin ................... _......... _ . ....._ ...... Cape Fear _ _......._.. __..._..... _........... _ 13. Cataloging Unit (8-digit) ............ _ ... . . -._..._ ....... 03030002 ...__ 14. Riparian Wetland Impact (ac.) (e g 0 13) _ ... 0.15 _ _ . ....._ __ .. .......... __. -1.11 11 -1 15. Non-Riparian Wetland Impact (ac.) _ .......... ......... ..._ ... .. -........ 0 .__-..._-..1 ......__......._....._..__...........-..._......_....._..._.........._.__._.................__......-.._......._................__................ . 16. Coastal Marsh Impact (ac.) .._...... ... ...... ........__........__..._....... ....... .. ........... _.._..........._....._.........._..--........ ......_.__..... ........ ..... _.... .-_......_._................. ...._........ ........ --......... 0 17. Stream Impacts (ft.) (e.g. 1,234) Warm Cool Cold 0 0 0 .. .......... ...._.._........ ........ _............. ..... __.....-.... .......... ........ __....... ........... _._........... _._._.__..... _....... _................+.. 18. Buffer Impact-Zone 1 (sq. ft.) (e.g. 12,345) ..0....._._..,,......__.....,......... ?......,,...... _...L.,.._... _ ..,,,,,......... ?....,.......,. _..,.,,,,.,.,.... ... _ ....... __ .._ __...._ .... ._._.__.......... _ ................._........._... _ __...... .......... _........ ......_._..._...._...-......._.._._......... ... 19. Buffer Impact-Zone 2 (sq. ft.) ..... _-........ ._._..._.................. __.............__.._............_.-........ .._._.__......... -----............ -.... _......... -...... __.......... ......... ........... ........ ._.......... ...... _.._......... 0 ... ........ ......... ._._.................. _ _.._............... _....... _.... ----....... -..._....... _.......... -....... ........... _....... .............. _........ .......... ._r.. IMPORTANT ' ............... __....... ...... ...___........ ...... __................... _----- ...... __.......... _....... _...... .............. -_................ __................. _......... .......... _...................... _...... ............ Signature of Applicant or Agent: Check (?) below if this request is a: i Q revision to a current acceptance, or Date: /?p p (? ? re-submission of an expired acceptance .._.... ....._.__..._...___.._........___..._...... _..._.__......._.._ ................ _._....__........ _..._._..... ..._._.._._._......_L. _........_......__._......._....... ._ ._.._..._._.......... ...... _......... ..._....__.... -....._........_.......... _..... ........ _-_................ __...._..._...... Buffer mitigation applicable only in the Neuse, Tar-Pamlico and Catawba river basins, and the Randleman Lake Water Supply Watershed. For help in determining the Cataloging Unit, go to EPS's "Surf Your Watershed" web page: http://cfpub.epa.gov/surf/locate/index.cfm Direct all questions to Chris Mankoff at 919-716-1921 or chris.mankoff@ncmail.net i / / IMPACT 1 / 589 SF. 0.01 AC 147 LF CHANNEL u I , . CO GRAPHIC SCALE L 50 0 25 50 100 1 inch s 50 ft. HIGHCROFT VILLAGE PROPOSED WETLAND WITHERB &- RAVENEL IMPACT MAP NNO101112 1 ?LANNNNN 1 ¦URVIVeNO CA2Y WAKE NnnhCarolina SHEET 2 OF 4 /' r I 0?4? r/r' ' r ./•?/ I IMPA T 3 /rr,r - ,. /1,472,5F, 0.03 C GSA- '- E-__-,I- W / ---- 'r // // \\ \ m '¢L 3J: 5 SF,- 0.,01 AC Ily + I I / rr /' /' ' ?r / J/ // // / r / \J / / ------------ / r / /r I r.- r GRAPHIC SCALE 0 / 50 0 25 50 100 I I 1 inch = 50 ft. HIGHCROFT VILLAGE PROPOSED WETLAND WI HERB & RAVENEL IMPACT MAP IN?INNIII I PLANNERS I SURVITORS CARY WAKE N.ah Carolin. SFILET 3 OF 4 D ? 3 a a a a a s a a o o o ? b o o `r° 6 6 6 0 0 0 0 a (n N N N a N N a O ccn n N N N 'm co 0) co co W 3 p N M 1* U C4 fn W) C-4 0 W W W O O = O f/I N U N N 1 i OL : 4 ZL i C CL F YL :• ? SL 'r olll ad L gilt ad 0 rams anaaa3a 3HI ?rrc 3r F O \ \\ $ LlJ O0 N u W o N U O W Wm _ > P d U N U o N $ r? W :a z J & N N a ? v W =? T W 3= LLJ W LLJ W / ? ?/? o® ®o I O NE "gg age / ? 3MI A NUDWd SI H:)WW8 d0 3WrAILt03 ® 1 p •?s I . . L i I ? o O O ? Y ' Q ? e- T11142 ® O / / ® O O C (2 ® u ® ( ® o z Q p o? 0 o V © ? J ® _ U s O W ® I a `?o I - - tZ9l 2!S OV021 -;OOH-OS 3dOH N33W Q I "Lui U I? Q z S I ?1 I ? I U¢I z ONJNQLWB MOSR' - m WOOS 90OZ '60 kw '/P-1 -6w'dYA @ML3M\SONYUM\1el+0\0e1-+o\+0\:)I WITHERS RAVEN EL ENGINEERS I PLANNERS I SURVEYORS Storm Water Management Support Data & Calculations Highcroft Village Subdivision Cary, Wake County, North Carolina Project No.: 204191.0 Prepared by: Withers & Ravenel, Inc. 111 MacKenan Drive 0'."t%11114411 .• 0µ CAA Cary, North Carolina 27511 eQll 000w-oft 0,. $FEssr, Jason A. Bertoncino, PE d ? July 27, 2006 %40- `? 25944/x"' N%48,`'??•` 27106 iii MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenet.com 7040 Wrightsville Avenue i Suite 1oi 1 Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: 91o.842.9392 1 fax: 91o.842.8o19 DWQ Project No DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATIO please complete the following inform ion): Project Name : NG ' T Contact Person: Phone Number: (9/1) 46q-3340 For projects with multiple basins, specify which basin this worksheet applies to: ,l1P $0 _.L Permanent Pool Elevation 373 . ors ft. (elevation of the orifice invert out) Temporary Pool Elevation 370.00 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area 5, / 00 sq. ft. (water surface area at permanent pool elevation) Drainage Area 7.0? ac. (on-site and off-site drainage to the basin) Impervious Area Z ac. (on-site and off-site drainage to the basin) Forebay Surface Area 850 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0"-9" Surface Area %60 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area 4 L760 sq, ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area £330 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume 14) 5 7o cu. ft. (volume detained on top of the permanent pool) SAIDA used 160 (surface area to drainage area ratio)* Diameter of Orifice in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. JkI5 The basin side slopes are no steeper than 3:1. 445 A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance, A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. DWQ Project No DIVISION OF WATER QUALITY • 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION (please coTILL&?wE ete the following information): Project Name : y«,1T J_ Contact Person: k Jhsc' BexTauc kp Phone Number: ((?14 ) 40- 334 For projects with multiple basins, specify which basin this worksheet applies to: 8M P 2- Permanent Pool Elevation 34Z• 00 ft. (elevation of the orifice invert out) Temporary Pool Elevation 339.0 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area 13, 70C> sq. ft. /2• Z8 ac. (. GZ. ac. 2000 0 62 sq, ft. s ft - 4, d 20 q. . sq, ft. /. 96d sq. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* Temporary Pool Volume SAIDA used Diameter of Orifice II. REQUIRED ITEMS CHECKLIST Z cu. ft. (volume detained on top of the permanent pool) z• Z i (surface area to drainage area ratio)* Z. 5 in. (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. i Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm,doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. DWQ Project No.. DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION lease complete tl}e following information): Project Name : l rcL E -?4ASE I Contact Person; B ay ?c Phone Number: Iqt9 - 33 For projects with multiple basins, specify which basin this worksheet applies to: $Pt f - 3 Permanent Pool Elevation 3-43-06 ft. (elevation of the orifice invert out) Temporary Pool Elevation 339.50 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area Temporary Pool Volume SA/DA used Diameter of Orifice If. REQUIRED ITEMS CHECKLIST 3,300 sq. • g? ac. ac. 5 00 sq. 11155 sq. /, /55 sq. 490 sq. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) ft. (at permanent pool elevation approximately 15%)* ft. (at permanent pool elevation approximately 35%a)* ft. (at permanent pool elevation approximately 35%)* ft. (at permanent pool elevation approximately 15%)* 6361 cu. ft. /. Z5 in. (volume detained on top of the permanent pool) (surface area to drainage area ratio)* (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project A lican s Initials The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. E-A sediment disposal area is provided. Access is provided for maintenance, A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state. nc.us/ncwetiands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. WITHERS &RAVENEL ENGINEERS I PLANNERS I SURVEYORS Project Project No. Subject _ Date By Sheet No. 07 iZ'?3?', ?rl:' t. '? I'((.`t /?..,.'(:,;t. :. U, ' .; rpv ?vrzc ?' C', ^'_ LOTS - ' ''?•a., gds c >,?< ,', ?l ? ?J/L,:;r r '?C??un-•c.. - C:.?.?`,:??'r_C?C?',7 X -'???,? /.?1 t.:??? ?„?1?4:? G? I? o CGS.'. ,4 ><' C ?, \> ca ?, 14 X70 v, i?r G r' I I c_? FUP 77 + ??y ?2Awwn? s 27. ?1, fl? v st v. CS=C' ?. o o y 6 -P4 2? e /. 3?) it,-) z d = 9/? = A `2 Lxv v 1 b l- 1 1 to 9 INITIAL INTEREST IN PARTICIPATION IN THE EXPRESS REVIEW PROGRAM WITHIN THE 401 OVERSITE/EXPRESS PERMITTING UNIT September 1, 2004 Version 3 Applicant Name: Withers and Ravenel - Attn: Todd Preuninger Applicant Address: 111 MacKenan Drive Cary. NC 27511 Applicant's phone number: 919-469-3340 Fax number: 919-238-2099 Applicant's email address: tpreuningerawithersravenel.com Consultant Name (if applicable): NA Consultant address (if applicable): NA Consultant's phone number: NA Fax number: NA Consultant's email address: NA Type of action requested under the Express Review Program (check all that apply): N 401 Water Quality Certification ? Stream Origin Determination ? Isolated Wetland Permit # of Determinations Requested ? Riparian Buffer Approval ? Intermittent/Perennial Determination ? Stormwater Management Plan # of Determinations Requested ? Mitigation Plan Stream Wetland ? Buffers (check all appropriate) Name of Project: Highcroft Village Subdivision County: Wake Total project acreage: 36.47 (acres) Total built out impervious area: 14.22 (acres) Nearest named stream (from USGS topo map): Bachelor Branch Please provide a brief description of this project (attach site plan if available): Land use in the general vicinity is primarily residential: the site is currently wooded and will more than likely support single family homes. Please attach a map of site location using USGS 1:24,000 map and county soil survey. Location of project site - please include reference to the county, nearest name town and highway number: From the intersection of US 64 and Hwy 55, go north on Hwy 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go approximately 1000 feet and site will be on your left. Proposed impacts: Acres of 404 wetlands: 0.154 Acres of isolated wetlands: NA Linear feet of streams: 171 Linear feet of isolated streams: NA Square feet of protected stream buffers: NA Has consultant or applicant attended any DWQ-sponsored training sessions in the past two years? If so, please list which ones. DWQ Express Training Class Has any DWQ staff visited the site? NO , if yes, please provide DWQ staff name, and date of visit: Which other environmental permits from other agencies will be needed for this project? Please list the permits and issuing agencies below: NWP 12,18 & 39: USACE Does this project require approval under the State Environmental Policy Act or National Environmental Policy Act? No Is this project an After-the-fact application or has this project received a previous Notice of Violation from DWQ? No Does this project require approval of a Variance from the NC Environmental Management Commission? No Are you aware of any local controversy concerning this project? If so, please describe the controversy and any measures that have been taken with respect to public involvement. This form must be submitted via email (Go 401 expressOncmail.net) faxed (919-733-6893) or hand-delivered to the Parkview Building, 2321 Crabtree Blvd., Raleigh, NC 27604. Applicants who are selected to participate in the Express Review Program will be notified via email or fax within 2 days. Successful applicants will then be instructed regarding detailed procedures for full application (Please Note: Submittals of the review, packages on Friday after 12:00 pm will be stamped as received on the next business day). Please contact Debbie Edwards at 919-733-9502 if you have any questions regarding this form. 2 1 .0 . zv-' .<k? 0p* ?? :/3 (1611, + ]i com, _ r U i ?1 1.4 °Cnrpenter? t i\ ?• r9 • _ l i+I` mD \?.l - •I .?1 I ?. I I ?! C_'?'• ? ?? it --•: .1• `? " \? ?? i to Cam -- ?•, ?' t • .? ? .- ,-;'1,,?? ..?• ? j _.gT,k.lLCtr . \ ' \..? .? , •, ?.I \?' ? ?. C ,', is Jot,- -upchu J ? ? ?J -;n?? 4jr1 .., ?• / 1 'ju ?!./` 7"' ??t. ? '`\ 11 ', ?? Imo., •"?,:...1 I WC'N,'- RAV E N E L Hightcroft Village Site Boundary n E N G I N E E R S 1 P L A N N E R S I S U R V E Y O R S W E 111 MacKenan Drive Cary, North Carolina 0 2,000 4,000 1V? telephone: 919.469.3340 www.wlthereravenel.com Feet .S OF VgATFg Michael F. Easley, Governor ? G William G. Ross Jr., Secretary 09 North Carolina Department of Environment and Natural Resources C Alan W. Klimek, P.E. Director Division of Water Quality EXPRESS PERMIT REVIEW PROGRAM Division of Water Quality Department of Environmental and Natural Resources 401 Oversight/Express Review Permitting Unit Street Address: 2321 Crabtree Boulevard, Suite 250 Raleigh, NC 27604-2260 Mailing Address: 1650 Mail Service Center Raleigh, NC 27699-1650 Contact Information: Phone # Fax #: 919-733-0203 919-733-6893 Fax To: Todd Preuninger Subject: Highcroft Village S/D Number of pages including cover sheet: 2 Notes or special instructions: Fax #: 238-2099 Date: June 12, 2006 The original will be sent in the mail. If you have questions please call Cynthia Van Der Wiele (a), 715.3473. N Caro ina atura !b 401 Oversight/Express Review Permitting Unit 650 Mail Service Center, Raleigh, North Carolina 27699-1650 321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 hone (919) 733-1786 / Fax (919) 733-6893 ternet: him;-h2u_cnr_state.nc.us,''ncvveila_nds Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper Ap? W AT ?RpG -i o ? June 13, 2006 EXPRESS REVIEW ACCEPTANCE LETTER Withers and Ravenel, Inc. Attn: Mr. Todd Preuninger 111 MacKenan Drive Cary, NC 27511 Dear Mr. Preuninger: Project Name: Highcroft Village Subdivision Michael 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 Wake County On June 12, 2006, the 401 Oversight/Express Permitting Unit of the Division of Water Quality received a request from you regarding a project known as " Highcroft Village Subdivision" for acceptance into the Express Review Program. This letter advises you that your project will be accepted into the Express Review Program once the following items are received: 1) The application fee of $2,000.00 [for 401 Water Quality Certification], made payable to the North Carolina Division of Water Quality]; 2) Five (5) complete and collated copies of the PCN Application; 3) One (1) copy of the Addendum; 4) Five (5) copies of all site plan information pertaining to this project (please refer to the Addendum http://h2o.enr.state.nc.us/ncwetlands/appadd5.pd ; Thank you for your attention to this matter. Please note that we cannot accept your application package until June 19, 2006 due to a lack of staff availability. The clock for this project will not start until receipt of the completed application package and required fee are received. If the impacts are greater than indicated on the Initial Interest Form and/or the services are different, you may be required to remit an additional fee. If you have any questions or wish to discuss these matters further please do not hesitate to call Amy Chapman at 919-733-9502 or Cynthia Van Der Wiele at 919-715-3473. Sincerely, ?p yndi Karoly, Manager 401/Express Review Oversite Unit CBK/cvdw cc: File copy 401 Oversight / Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733-6893 / Internet: http_i h2?)_cnr.statc.nc as/ncwctlands one N Caro na Natural An Equal Opportunity/Affirmative Action Employer- 50% Recycled110% Post Consumer Paper WITHERS &- RAVENEL engineers i planners i surveyors vii MacKenan Drive CARY, NORTH CAROLINA, 27512 (919) 469-3340 FAX (929) 467-6008 To: DWQ 401 Express Permit Request 2321 Crabtree Blvd Raleigh NC 27604 WE ARE SENDING YOU ? Shop Drawings ? Copy of Letter LETTER OF TRANSMUTAL DATE 8/9/06 76'N0. 2040-191.0 ATTENTION Lia M ott PHONE# gig-733-,1786 RE: Hi hcroft Village Subdivision & ® Attached ? Under separate cover via ? Prints ? Plans ? Samples ? Change order ? Diskette the following items: ? Specifications COPIES DATE NO. DESCRIPTION 8/9/06 1 Permit Application 1 8/9/o6 2 Check ($2,000) THESE ARE TRANSMITTED as checked below: ® For approval ? Approved as submitted ? Resubmit copies for approval ® Foryour use ? Approved as noted ? Submit copies for distribution ® As requested ? Returned forcorrectlons ? Return corrected prints ® For review and comment ? For Distribution ? FOR BIDS DUE 20 ? PRINTS RETURNED AFTER LOAN TO US REMARKS: Please feel free to call with any questions WETLANDS AND STOWWATER BRANCH COPYTO: WR File SIGNED: Todd Preuninger if enclosures are not as noted, kindly notify us at once. O?O? W AT ?RQG Q `'aw ,C June 13, 2006 EXPRESS REVIEW ACCEPTANCE LETTER Withers and Ravenel, Inc. Attn: Mr. Todd Preuninger 111 MacKenan Drive Cary, NC 27511 Dear Mr. Preuninger: Project Naine: Higheroft Village Subdivision Michael 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 Wake County On June 12, 2006, the 401 Oversight/Express Permitting Unit of the Division of Water Quality received a request from you regarding a project known as " Highcroft Village Subdivision" for acceptance into the Express Review Program. This letter advises you that your project will be accepted into the Express Review Program once the following items are received: 1) The application fee of $2,000.00 [for 401 Water Quality Certification], made payable to the North Carolina Division of Water Quality]; 2) Five (5) complete and collated copies of the PCN Application; 3) One (1) copy of the Addendum; 4) Five (5) copies of all site plan information pertaining to this project (please refer to the Addendum htti):Hh2o.enr.state.nc.us/ncwetlaiids/api)add5.pol); Thank you for your attention to this matter. Please note that we cannot accept your application package until June 19, 2006 due to a lack of staff availability. The clock for this project will not start until receipt of the completed application package and required fee are received. If the impacts are greater than indicated on the Initial Interest Form and/or the services are different, you may be required to remit an additional fee. If you have any questions or wish to discuss these matters further please do not hesitate to call Amy Chapman at 919-733-9502 or Cynthia Van Der Wiele at 919-715-3473. Sincerely, Oa*L(aA C?l yndi Karoly, Manager 401/Express Revi 0 ersite Unit cBlvcvaW (71? cc: File copy 0 1006 Mos?r?U?irY -'" ?or,(ethCarolina N 401 Oversight I Express Review Permitting Unit ,/VQflttYlAY 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-68931 Internet: IlttP;,'!li2ti_enrstatc.nc tis!iicwctlands An Equal Opportunity/Affirmative Action Employer - 50% Recycled/l0% Post Consumer Paper OPERATIONS & MAINTENANCE MANUAL Project: HIGHCROFT VILLAGE - PHASE 1 BEST MANAGEMENT PRACTICES 1, 2 & 3 Owners: Address: Phone Number: Prepared by: Date: Project: Constructed: Location: Receiving Water Course Highcroft Investors, LLC c/o Colen E. Davidson, Jr. 140 Towerview Court, Cary, North Carolina 27511 919.463.9940 Withers & Ravenel, Inc August 2, 2006 HIGHCROFT VILLAGE - PHASE 1 August 2006 Green Hope School Road, Cary NC Tributary of Batchelor Branch (Cape Fear River Basin) This manual establishes procedures for maintenance and operation of the Highcroft Village - Phase 1 Best Management Practices (BMP) 1, 2 & 3 in accordance with NCDENR rules and regulations. SECTION 1 - MAINTENANCE OF BEST MANAGEMENT PRACTICES Monthly or after every runoff producing rainfall, whichever comes first: a. Remove debris from trash racks b. Check and clear orifice and riser of any obstructions. The detention device should be kept clear of debris such as loose bottles, cans, food containers and other forms of rubbish. Any rodents that have fallen into the device should be removed so that they do not present a source of blockage for the discharge pipe. c. Check pond side slopes; remove trash, repair eroded areas before next rainfall. Rills and gullies should be filled with suitable soil compacted and then seeded. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. Quarterly a. Inspect the collection systems (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates, and basin bottoms, and check piping for obstructions. b. Check pond inlet pipes for obstructions. c. Repair any broken pipes. d. Replace riprap that is choked with sediment. III. Semi-Annually a. Remove accumulated sediment from bottom of outlet structure. b. Check pond depth at various locations. If the elevations of the marsh areas exceed the permanent pool elevation, the sediment should be removed to design levels. This shall be performed by excavating the marsh areas six inches below design elevations. Afterwards clean topsoil shall be placed to bring marsh areas back to design elevations and the required plant material reestablished. (see elevation tables below) c. The riser structure should be visually inspected semi-annually for any seepage through mortar joints or cracks in the walls of the structures. The orifice outlets should be cleared of any debris that may build up and the extension should be checked for damage. The drain valve assembly should be operated to ensure that all internal parts remain lubricated and in good working order. d. Conduits should be visually inspected at the joints. Pipes should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear, loss of protective coating, corrosion and blocking. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. IV. General a. Mow side slopes according to the season. Maximum grass height to be six (6) inches. b. Wetland planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland plants should be encouraged to grow in the marsh areas. c. All components of impoundment system to be kept in good working order. d. In case the ownership of the impoundments transfers, the current owner shall, within thirty (30) days of transfer of ownership, notify NCDENR-DWQ of such ownership transfer. BMP #1 V Permanent Pool Elevation 373.00 Marsh Elevation 372.50 avg. ---- ------ Low Marsh Elevation 372.00 avg. 1\7 FOREBAY MAIN POND BMP #2 -, p Permanent Pool Elevation 342.00 High Marsh Elevation 341.50 avg, -------------------------------------------------- Low Marsh Elevation 341.00 avg. + FOREBAY MAIN POND BMP #3 -\ p Permanent Pool Elevation 343.00 High Marsh Elevation 342.50 avg. FOREBAY -------------------------------------------------- Low Marsh Elevation 342.00 avg. + MAIN POND SECTION 2 - RECORD KEEPING Operation of the storm water detention device should include recording of the following: Semi-Annual Inspection Reports - A collection of written inspection reports should be kept on record in Section 3 of this manual. Inspection should be conducted semi-annually. Observations - All observations should be recorded. Where periodic inspections are performed following significant rainfall, these inspections should be logged into the Periodic Inspection, Operations and Maintenance Form in Section 3 of this manual. Other Operational Procedures - The owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the detention device over time should be recorded on the as-builts. Sedimentation and Dredging - Sedimentation from on-site and off-site soils will eventually result in a decrease of the storage capacity for these ponds and will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas be stabilized with a vegetative ground cover such that it restrains erosion. This would include a periodic application of fertilizer and/or other treatment necessary to promote a stable ground cover and minimize sedimentation to the device. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a ground cover sufficient to restrain erosion. I, COIzPA f? DaVIVSV ' JJ', Member , hereby acknowledge that I am the financially responsible party for Maintenance of these Best Management Practices. I will perform the maintenance as outlined above, as part of the 401 Water Quality Certification and the stormwater regulations for this project. Signature: Date: ;?A I, D-CLj o y-a-h O Q,W V1't \ , a Notary Public for the State of Nc,,-_ , County of CL L(, do hereby certify that Co I e yy E Ravi d t w J r personally appeared before me this 3 day of 20 o ?, and acknowledge due execution of the foregoing instrument. Witness my hand and official seal. Seal My commission expires: Z' S 2-0 (1 DEBORAH NEWMAN NOTARY PUBLIC WAKE COUNTY, N.C. ??-r• My Commission Expires 12-15-2008 b?r.+1 ? iLC I I?r i r`. I-;e_J Name: De_16o ra-k Newvkah Section 3 - Inspection Checklist and Periodic Maintenance Reports WETLAND INSPECTION CHECKLIST - Highcroft Village Phase 1, Cary, NC BMP # Date: Time: SPILLWAYS - DRAINS - OUTLETS Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investi ative Principal Spillway Type: Trashracks/Debris Cracks/Deterioration Joint Deterioration Improper Alignment Seepage/Piping Undercutting Erosion Debris Drain/Other Outlets Type: Gates/Valves Operability EMBANKMENT -- POOL Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investigative U/S Slope Type: Ve etation/Ri ra Beach in /slides/cracks Undermining/erosion Rodent burrows Crest Type: Ruts/erosion Cracks/settlement Poor alignment D/S Slope Type: Vegetation/erosion Rodent burrows Sloughs/slides/cracks Seepage/wetness Pool Type: Erosion/ round cover Sedimentation Water quality Wetland Vegetation Abutment Type: Vegetation/erosion Slough/slides/cracks Seepage/wetness General Comments, Sketches & Field Measurements PERODIC INSPECTION, OPERATION & MAINTENANCE RECORDS Highcroft Village- Phase 1 BMP # , Cary, NC Date Time Rain " Pool Level Weather General Observations Recorded Conditions or Comments B Date Maintenance Performed Comments Recorded B Date Equipment Operated Comments Recorded B OPERATIONS & MAINTENANCE MANUAL Project HIGHCROFT VILLAGE - PHASE 1 BEST MANAGEMENT PRACTICES 1 2 & 3 Owners: Address: Phone Number: Prepared by: Date: Project: Constructed: Location: Receiving Water Course Highcroft Investors, LLC c/o Colen E. Davidson, Jr. 140 Towerview Court, Cary, North Carolina 27511 919.463.9940 Withers & Ravenel, Inc August 2, 2006 HIGHCROFT VILLAGE - PHASE 1 August 2006 Green Hope School Road, Cary NC Tributary of Batchelor Branch (Cape Fear River Basin) This manual establishes procedures for maintenance and operation of the Highcroft Village - Phase 1 Best Management Practices (BMP) 1, 2 & 3 in accordance with NCDENR rules and regulations. SECTION 1 - MAINTENANCE OF BEST MANAGEMENT PRACTICES Monthly or after every runoff producing rainfall, whichever comes first: a. Remove debris from trash racks b. Check and clear orifice and riser of any obstructions. The detention device should be kept clear of debris such as loose bottles, cans, food containers and other forms of rubbish. Any rodents that have fallen into the device should be removed so that they do not present a source of blockage for the discharge pipe. c. Check pond side slopes; remove trash, repair eroded areas before next rainfall. Rills and gullies should be filled with suitable soil compacted and then seeded. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. II. Quarterly a. Inspect the collection systems (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates, and basin bottoms, and check piping for obstructions. b. Check pond inlet pipes for obstructions. c. Repair any broken pipes. d. Replace riprap that is choked with sediment. III. Semi-Annually a. Remove accumulated sediment from bottom of outlet structure. b. Check pond depth at various locations. If the elevations of the marsh areas exceed the permanent pool elevation, the sediment should be removed to design levels. This shall be performed by excavating the marsh areas six inches below design elevations. Afterwards clean topsoil shall be placed to bring marsh areas back to design elevations and the required plant material reestablished. (see elevation tables below) c. The riser structure should be visually inspected semi-annually for any seepage through mortar joints or cracks in the walls of the structures. The orifice outlets should be cleared of any debris that may build up and the extension should be checked for damage. The drain valve assembly should be operated to ensure that all internal parts remain lubricated and in good working order. d. Conduits should be visually inspected at the joints. Pipes should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear, loss of protective coating, corrosion and blocking. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. IV. General a. Mow side slopes according to the season. Maximum grass height to be six (6) inches. b. Wetland planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland plants should be encouraged to grow in the marsh areas. c. All components of impoundment system to be kept in good working order. d. In case the ownership of the impoundments transfers, the current owner shall, within thirty (30) days of transfer of ownership, notify NCDENR-DWQ of such ownership transfer. BMP #1 Permanent Pool Elevation 373.00 High Marsh Elevation 372.50 avg. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -~ - - - - - - Low Marsh Elevation 372.00 avg. ? FOREBAY MAIN POND BMP #2 p Permanent Pool Elevation 342.00 J High Marsh Elevation 341.50 avq, , ------------------------------------------- ------ Low Marsh Elevation 341.00 avg. + i FOREBAY MAIN POND BMP #3 p Permanent Pool Elevation 343.00 High Marsh Elevation 342.50 avg. ------------------ ------ -------------------------------------------- IA L Low Marsh Elevation 342.00 avg. FOREBAY MAIN POND SECTION 2 - RECORD KEEPING Operation of the storm water detention device should include recording of the following: Semi-Annual Inspection Reports - A collection of written inspection reports should be kept on record in Section 3 of this manual. Inspection should be conducted semi-annually. Observations - All observations should be recorded. Where periodic inspections are performed following significant rainfall, these inspections should be logged into the Periodic Inspection, Operations and Maintenance Form in Section 3 of this manual. Other Operational Procedures - The owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the detention device over time should be recorded on the as-builts. Sedimentation and Dredging - Sedimentation from on-site and off-site soils will eventually result in a decrease of the storage capacity for these ponds and will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas be stabilized with a vegetative ground cover such that it restrains erosion. This would include a periodic application of fertilizer and/or other treatment necessary to promote a stable ground cover and minimize sedimentation to the device. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a ground cover sufficient to restrain erosion. I, (o 1cy E Dt wl CkSVYL J? , Member , hereby acknowledge that I am the financially responsible party for Maintenance of these Best Management Practices. I will perform the maintenance as outlined above, as part of the 401 Water Quality Certification and the stormwater regulations for this project. Signature: J? Date: $ 3 0 I, 2l-)o V a-11 t vVW CU., , a Notary Public for the State of G , County of VWa riC?e_ do hereby certify that aVf d i VVtJ? personally appeared before me this _ 3 day of ?s - , 20 y ? and acknowledge due execution of the foregoing instrument. Witness my hand and official seal. Seal My commission expires: I I-( 1 Zvog I~?O V DEBORAH NEWMAN NOTARY PUBLIC N ?? WAKE COUNTY, N.C. My Commission Expires 12-15-2008 I?W?? -De.6o r-" Ne w ?ww Section 3 - Inspection Checklist and Periodic Maintenance Reports WETLAND INSPECTION CHECKLIST - Highcroft Village Phase 1, Cary, NC BMP # Date: Time: SPILLWAYS - DRAINS - OUTLETS Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investigative Principal Spillway Type: Trashracks/Debris Cracks/Deterioration Joint Deterioration Improper Alignment Seepage/Piping Undercutting Erosion Debris Drain/Other Outlets Type: Gates/Valves Operability EMBANKMENT -- POOL Check/Circle Condition Noted Observations Action Repair Action - Monitor Action -- Investigative U/S Slope Type: Ve etation/Ri ra Beach in /slides/cracks Underminin /erosion _ Rodent burrows Crest Type: Ruts/erosion Cracks/settlement _ Poor alignment D/S Slope Type: Vegetation/erosion Rodent burrows Sloughs/slides/cracks Seepage/wetness Pool Type: Erosion/ round cover Sedimentation Water quality Wetland Vegetation Abutment Type: Vegetation/erosion Slough/slides/cracks See age/wetness General Comments, Sketches & Field Measurements PERODIC INSPECTION, OPERATION & MAINTENANCE RECORDS Highcroft Village- Phase 1 BMP # , Cary, NC Date Time Rain " Pool Level Weather General Observations Recorded Conditions or Comments B Date Maintenance Performed Comments Recorded B Date Equipment Operated Comments Recorded B OPERATIONS & MAINTENANCE MANUAL Project BEST MANAGEMENT PRACTICES 1, 2 & 3 Owners: Address: Phone Number: Prepared by: Date: Project: Constructed: Location: Receiving Water Course HIGHCROFT VILLAGE - PHASE 1 Highcroft Investors, LLC c/o Colen E. Davidson, Jr. 140 Towerview Court, Cary, North Carolina 27511 919.463.9940 Withers & Ravenel, Inc August 2, 2006 HIGHCROFT VILLAGE - PHASE 1 August 2006 Green Hope School Road, Cary NC Tributary of Batchelor Branch (Cape Fear River Basin) This manual establishes procedures for maintenance and operation of the Highcroft Village - Phase 1 Best Management Practices (BMP) 1, 2 & 3 in accordance with NCDENR rules and regulations. SECTION 1 - MAINTENANCE OF BEST MANAGEMENT PRACTICES Monthly or after every runoff producing rainfall, whichever comes first: a. Remove debris from trash racks b. Check and clear orifice and riser of any obstructions. The detention device should be kept clear of debris such as loose bottles, cans, food containers and other forms of rubbish. Any rodents that have fallen into the device should be removed so that they do not present a source of blockage for the discharge pipe. c. Check pond side slopes; remove trash, repair eroded areas before next rainfall. Rills and gullies should be filled with suitable soil compacted and then seeded. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. II. Quarterly a. Inspect the collection systems (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates, and basin bottoms, and check piping for obstructions. b. Check pond inlet pipes for obstructions. c. Repair any broken pipes, d. Replace riprap that is choked with sediment. III. Semi-Annually a. Remove accumulated sediment from bottom of outlet structure. b. Check pond depth at various locations. If the elevations of the marsh areas exceed the permanent pool elevation, the sediment should be removed to design levels. This shall be performed by excavating the marsh areas six inches below design elevations. Afterwards clean topsoil shall be placed to bring marsh areas back to design elevations and the required plant material reestablished. (see elevation tables below) c. The riser structure should be visually inspected semi-annually for any seepage through mortar joints or cracks in the walls of the structures. The orifice outlets should be cleared of any debris that may build up and the extension should be checked for damage. The drain valve assembly should be operated to ensure that all internal parts remain lubricated and in good working order. d. Conduits should be visually inspected at the joints. Pipes should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear, loss of protective coating, corrosion and blocking. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. IV. General a. Mow side slopes according to the season. Maximum grass height to be six (6) inches. b. Wetland planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland plants should be encouraged to grow in the marsh areas. c. All components of impoundment system to be kept in good working order. d. In case the ownership of the impoundments transfers, the current owner shall, within thirty (30) days of transfer of ownership, notify NCDENR-DWQ of such ownership transfer. BMP #1 p Permanent Pool Elevation 373.00 High Marsh Elevation 372.50 avg. ------------- -------------------------------------------------- Low Marsh Elevation 372.00 avg. FOREBAY MAIN POND BMP #2 Permanent Pool Elevation 342.00 FOREBAY BMP #3 High Marsh Elevation 341.50 avg, -------------------------------------------------- Low Marsh Elevation 341.00 avg. + MAIN POND p Permanent Pool Elevation 343.00 High Marsh Elevation 342.50 avg. -------------------------------------------- ------ Low Marsh Elevation 342.00 avg. FOREBAY MAIN POND SECTION 2 - RECORD KEEPING Operation of the storm water detention device should include recording of the following: Semi-Annual Inspection Reports - A collection of written inspection reports should be kept on record in Section 3 of this manual. Inspection should be conducted semi-annually. Observations - All observations should be recorded. Where periodic inspections are performed following significant rainfall, these inspections should be logged into the Periodic Inspection, Operations and Maintenance Form in Section 3 of this manual. Other Operational Procedures - The owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the detention device over time should be recorded on the as-builts. Sedimentation and Dredging - Sedimentation from on-site and off-site soils will eventually result in a decrease of the storage capacity for these ponds and will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas be stabilized with a vegetative ground cover such that it restrains erosion. This would include a periodic application of fertilizer and/or other treatment necessary to promote a stable ground cover and minimize sedimentation to the device. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a ground cover sufficient to restrain erosion. 1, Co1Cv%_ E F_)Gwi CkSyPAY , Member , hereby acknowledge that I am the financially responsible party for Maintenance of these Best Management Practices. I will perform the maintenance as outlined above, as part of the 401 Water Quality Certification and the stormwater regulations for this project. Signature: Date: $ 3 LOA 1, ei1)0 V a t v?W W , a Notary Public for the State of N C- , County of Wa tc-e do hereby certify that I A v d i vK J? personally appeared before me this 3 day of ?,L% i- , 20 U So and acknowledge due execution of the foregoing instrument. Witness my hand and official seal. Seal ??'"?'"" °+? DEBORAH NEWMAN NOTARY PUBLIC M WAKE COUNTY, N.C. y Commission Expires 12-15-2008 My commission expires 12. -(1 - Zc)ort P(i "? ,nj N am e Dc'100,- In Newm'W Section 3 - Inspection Checklist and Periodic Maintenance Reports WETLAND INSPECTION CHECKLIST - Highcroft Village Phase 1, Cary, NC BMP # Date: Time: SPILLWAYS - DRAINS - OUTLETS Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investi ative Principal S illwa Type: Trashracks/Debris Cracks/Deterioration Joint Deterioration Improper Alignment Seepage/Piping Undercutting Erosion Debris Drain/Other Outlets Type: Gates/Valves Operability EMBANKMENT -- POOL Check/Circle Condition Noted Observations Action - Repair Action - Monitor ction -- [Investigative U/S Slope Type: Ve etation/Ri ra Beach in /slides/cracks Undermining/erosion Rodent burrows Crest Type: Ruts/erosion Cracks/settlement Poor alignment D/S Slope Type: Vegetation/erosion Rodent burrows Sloughs/slides/cracks Seepage/wetness Pool Type: Erosion/ round cover Sedimentation Water quality Wetland Vegetation Abutment Type: Ve etation/erosion Slough/slid s/cracks See age/wetness General Comments, Sketches & Field Measurements PERODIC INSPECTION, OPERATION & MAINTENANCE RECORDS Highcroft Village- Phase 1 BMP # , Cary, NC Date Time Rain " Pool Level Weather General Observations Recorded Conditions or Comments B Date Maintenance Performed Comments Recorded B Date Equipment Operated Comments Recorded B OPERATIONS & MAINTENANCE MANUAL Project: HIGHCROFT VILLAGE - PHASE 1 BEST MANAGEMENT PRACTICES 1, 2 & 3 Owners: Highcroft Investors, LLC c/o Colen E. Davidson, Jr. Address: 140 Towerview Court, Cary, North Carolina 27511 Phone Number: 919.463.9940 Prepared by: Withers & Ravenel, Inc Date: August 2, 2006 Project: HIGHCROFT VILLAGE - PHASE 1 Constructed: August 2006 Location: Green Hope School Road, Cary NC Receiving Water Course: Tributary of Batchelor Branch (Cape Fear River Basin) This manual establishes procedures for maintenance and operation of the Highcroft Village - Phase 1 Best Management Practices (BMP) 1, 2 & 3 in accordance with NCDENR rules and regulations. SECTION 1 - MAINTENANCE OF BEST MANAGEMENT PRACTICES Monthly or after every runoff producing rainfall, whichever comes first: a. Remove debris from trash racks b. Check and clear orifice and riser of any obstructions. The detention device should be kept clear of debris such as loose bottles, cans, food containers and other forms of rubbish. Any rodents that have fallen into the device should be removed so that they do not present a source of blockage for the discharge pipe. c. Check pond side slopes; remove trash, repair eroded areas before next rainfall. Rills and gullies should be filled with suitable soil compacted and then seeded. Where eroded areas are detected, the cause of the erosion should be addressed to prevent a continued maintenance problem. Quarterly a. Inspect the collection systems (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates, and basin bottoms, and check piping for obstructions. b. Check pond inlet pipes for obstructions. c. Repair any broken pipes. d. Replace riprap that is choked with sediment. III. Semi-Annually a. Remove accumulated sediment from bottom of outlet structure. b. Check pond depth at various locations. If the elevations of the marsh areas exceed the permanent pool elevation, the sediment should be removed to design levels. This shall be performed by excavating the marsh areas six inches below design elevations. Afterwards clean topsoil shall be placed to bring marsh areas back to design elevations and the required plant material reestablished. (see elevation tables below) c. The riser structure should be visually inspected semi-annually for any seepage through mortar joints or cracks in the walls of the structures. The orifice outlets should be cleared of any debris that may build up and the extension should be checked for damage. The drain valve assembly should be operated to ensure that all internal parts remain lubricated and in good working order. d. Conduits should be visually inspected at the joints. Pipes should be inspected for proper alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear, loss of protective coating, corrosion and blocking. A depression in the soil surface over the pipe may be signs that soil is being removed from around the pipe. IV. General a. Mow side slopes according to the season. Maximum grass height to be six (6) inches. b. Wetland planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland plants should be encouraged to grow in the marsh areas. c. All components of impoundment system to be kept in good working order. d. In case the ownership of the impoundments transfers, the current owner shall, within thirty (30) days of transfer of ownership, notify NCDENR-DWQ of such ownership transfer. BMP #1 p Permanent Pool Elevation 373.00 High Marsh Elevation 372.50 avg. -------------------------------------------- ------ Low Marsh Elevation 372.00 avg. FOREBAY MAIN POND BMP #2 p Permanent Pool Elevation 342.00 High Marsh Elevation 341.50 avg, -------------------------------------------- ------ Low Marsh Elevation 341.00 avg. FOREBAY MAIN POND BMP #3 p Permanent Pool Elevation 343.00 High Marsh Elevation 342.50 avg. -------------------------------------------- ------ Low Marsh Elevation 342.00 avg. FOREBAY MAIN POND SECTION 2 - RECORD KEEPING Operation of the storm water detention device should include recording of the following: Semi-Annual Inspection Reports - A collection of written inspection reports should be kept on record in Section 3 of this manual. Inspection should be conducted semi-annually. Observations - All observations should be recorded. Where periodic inspections are performed following significant rainfall, these inspections should be logged into the Periodic Inspection, Operations and Maintenance Form in Section 3 of this manual. Other Operational Procedures - The owner should maintain a complete and up-to-date set of plans (as-built drawings) and all changes made to the detention device over time should be recorded on the as-builts. Sedimentation and Dredging - Sedimentation from on-site and off-site soils will eventually result in a decrease of the storage capacity for these ponds and will have to be removed. The frequency of this sediment removal can be reduced by ensuring that the site areas be stabilized with a vegetative ground cover such that it restrains erosion. This would include a periodic application of fertilizer and/or other treatment necessary to promote a stable ground cover and minimize sedimentation to the device. The removed material should be hauled offsite to a suitable landfill site or mounded somewhere on site and stabilized with a ground cover sufficient to restrain erosion. I, Calcvt E (Jrw?`?litN? ?? , Member , hereby acknowledge that I am the financially responsible party for Maintenance of these Best Management Practices. I will perform the maintenance as outlined above, as part of the 401 Water Quality Certification and the stormwater regulations for this project. Signature: Date: $ 3 0 I, &-)o V a- l t vlw W , , a Notary Public for the State of N G , County of V a (,C?e_ do hereby certify that i a.?idS (,1ty personally appeared before me this 3_ day of 20 y So and acknowledge due execution of the foregoing instrument. Witness my hand and official seal. Seal My commission expires: I L -(? ZvUg _?rva? DEBORAH NEWMAN NOTARY PUBLIC A `ctp"e : Vi1iff_?6o rOJA WAKE COUNTY, N.C. ?? ?( Iv ?"•" My Commission Expires 12-15-2008 NewA&W Section 3 - Inspection Checklist and Periodic Maintenance Reports WETLAND INSPECTION CHECKLIST - Highcroft Village Phase 1, Cary, NC BMP # Date: Time: SPILLWAYS - DRAINS - OUTLETS Check/Circle Condition Noted Observations Action - Repair Action - Monitor Action -- Investigative Principal pillway Type: Trashracks/Debris Cracks/Deterioration Joint Deterioration Improper Alignment Seepage/Piping Undercutting Erosion Debris Drain/Other Outlets Type: GatesNalves Operability EMBANKMENT -- POOL Check/Circle Condition Noted Observations A Repair Action - Monitor Action -- Investigative U/S Slope Type: Ve etation/Ri ra Beach in /slides/cracks Undermining/erosion Rodent burrows Crest Type: Ruts/erosion Cracks/settlement _ Poor alignment D/S Slope Type: Vegetation/erosion Rodent burrows Sloughs/slides/cracks Seepage/wetness Pool Type: Erosion/ round cover Sedimentation Water quality Wetland Vegetation Abutment Type: Vegetation/erosion Slough/slides/cracks See age/wetness General Comments, Sketches & Field Measurements PERODIC INSPECTION, OPERATION & MAINTENANCE RECORDS Highcroft Village- Phase 1 BMP # , Cary, NC Date Time Rain " Pool Level Weather General Observations Recorded Conditions or Comments B Date Maintenance Performed Comments Recorded B Date Equipment Operated Comments Recorded B WITHERS &RAVEN EL ENGINEERS I PLANNERS I SURVEYORS August 17, 2oo6 Ms. Lia Myott, Express Review Coordinator NCDENR, Division of Water Quality 2321 Crabtree Boulevard Suite 250 Raleigh, North Carolina 27604 RE: Highcroft Village Subdivision DWQ EXP. No. 02-1169 V.2 Wake County Ms. Myott: ? ? - JJ s `? LU06 DENY - WATER QUALITY WETLANDS AND STORMWATER BRIWCH Please find attached plans and specifications in support of the 401 express review application provided. The revisions are pursuant to you comments provided on August 11, 2oo6. We offer the following responses to the information provided. Wetland & Stream Impacts: a. We have included a copy of the delineation map submitted to the USACOE for approval with field surveyed wetland delineation data. b. We have listed a range of mitigation payments as the USACOE has yet to assign our mitigation requirements. The developer proposes to provide mitigation payments as required by the USACOE to the NCDENR-EEP. c. We have included a cross-section for the proposed culvert crossing for the stream impacts. Stormwater Management Plans: a. The ligustrum screen is a requirement of the Town of Cary. It is intended to visually screen the BMP's from the surrounding parcels and minimize any aesthetic impacts that may arise from living adjacent to a storm water management practices. We do not agree with the Town of Cary's assessment of need for this screen material, but must comply with their requirement for plan approval. b. Note 2 on sheet 7B of the plans requires that all areas within two feet in elevation of the normal pool shall be planted with a combination of Panicum Clandestinum (deer tongue) and Pennisetum Glaucum(pearl millet). Please note we are not aware of specific littoral shelf planting requirements associated with storm water wetlands. We understand this practice to be more associated with the construction of wet detention ponds. c. We have updated our design parameters for the storm water management devices to meet the 2 to 5 day drawdown requirements. Streets: a. The Town of Cary requires street stubs in all directions at intervals of 1,250 to 1,500 feet. The Planning Director may waive these requirements in cases where stubs are not practicable. In the case of Highcroft Village this requirement was waived on the southern portions of the parcel due to existing development to the east and south and a stream buffer to the west. These requirements were not waived on the northern section because similar restrictions do not exist. The developer does not have any plans for, nor is under contract to purchase the Alma M. Stitt property. However, we suggest the stub as shown would allow iii MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenet.com 7040 Wrightsville Avenue i Suite 1o1 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: 910.842.9392 1 fax: 910.842.8o19 full access to the Stitt property without the need to cross the riparian feature internal to the property, thereby reducing the potential of future impacts. b. The Town of Cary did not specifically require the northwest access road in the location shown. However, there exists a zoning condition that only allows one road access to Green Hope School Road for the parcel. An internal crossing of the subject feature is required to access the northwest corner of the site. Based on our previous layout and engineering work, we concluded the proposed roadway configuration, as opposed to a series of driveways or a cul-de-sac produced the minimum disturbance to the wetland areas. We trust the above information with the attached plans and calculations with assist in the approval of the above referenced project. We appreciate your assistance regarding this matter. Sincerely, ITHERS & RAVENEL, INC. Jas6n A. Bertoncino, PE Attachments CC: Mr. Todd Preuninger, Withers & Ravenel Ms. Ginger Warner, Highcroft Investors, LLC WITHERS RAVENEL ENGINEERS I PLANNERS I SURVEYORS STORM WATER MANAGEMENT SUPPORT DATA & CALCULATIONS HIGHCROFT VILLAGE SUBDIVISION DWQ. EXP. 02-1i69 v. 2 Cary, Wake County, North Carolina WR Project # 204191.0 J 0 CS?NOSTl ?'?L??l '9" 'Cy Prepared By: WITHERS & RAVENEL, INC 111 MacKenan Drive Cary, North Carolina 27511 e?10 Jason Bertoncino, PE LOP," O, August 18, 2oo6 iii MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com 7040 Wrightsville Avenue i Suite 1o1 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: 91o.842.9392 i fax: 91o.842.8o19 DWQ Project No. 07- - l 1 0 V. 7 DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATI (please complete the following information): Project Name : /6,*CZO F7_ V, c E - P A5E .? Contact Person: ,v -roti,? N c? Phone Number: -40- 33'40 For projects with multiple basins, specify which basin this worksheet applies to: 13,_A ?> *#-1- Permanent Pool Elevation 373.00 ft. (elevation of the orifice invert out) Temporary Pool Elevation 376,00 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area 5i 600 sq. ft. (water surface area at permanent pool elevation) Drainage Area 7. 0 0/ ac. (on-site and off-site drainage to the basin) Impervious Area 2. 9 ac. (on-site and off-site drainage to the basin) Forebay Surface Area 660 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0"-9" Surface Area 96 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area %0 sq. ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area 830 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume cu. ft. (volume detained on top of the permanent pool) SAIDA used /• O o (surface area to drainage area ratio)* Diameter of Orifice A 25 in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. ?e specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see hftp://h2o.ehnr.state.nc.us/ncwetiands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. r Best Management Practice Design Criteria - Constructed Wetlands - BMP#1 Drainage Area 7.09 ac Impervious Surface 2.98 ac Imp. Surf. Infrast. 1.16 ac. Imp. Surf. Lots 1.82 ac. Impervious Surface % 42.0 % Required SA/DA: 1.80 % Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 40 1.73 2 50 2.06 Surface Area Required: 5,547 sf (Drainage Area' SA/DA' 43,560) 1" Runoff Volume Estimate 11,022 cf (0.05+0.009(lmp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Storage Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 373 5,600 6,414 cy 14,576 cy 374 7,227 8,163 cy 375 9,098 Orifice Size for 2 Day Drawdown Qallowable 11,022 cy X 1 hr = 0.0638 cfs 48 hr 3600 sec Q=0.6`Area(2(32.2)(Have))^0.5 Have 1 ft Area 1.908 in^2 Orifice Diameter 1.56 in (4'Area"3.14)^0.5 Orifice Size for 5 Day Drawdown Qallowable 11,022 cy X 1 hr = 0.0255 cfs 120 hr 3600 sec Q=0.6"Area(2(32.2)(Have))^0.5 Have 1 ft Area 0.763 in^2 Orifice Diameter 0.99 in (4'Area`3.14)^0.5 Use Orifice Diameter 1.25 in DWQ Project No. OZ - 116 9 V. 2 DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATIO (please complete the following information): Project Name : i - eI 4- Contact Person: ??Q7?>/yGINC? Phone Number: - O For projects with multiple basins, specify which basin this worksheet applies to: 1RMP 2_ Permanent Pool Elevation 343.00 ft. (elevation of the orifice invert out) Temporary Pool Elevation 340. 0 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area /3, ZOO sq. ft. Drainage Area 12. Z6 ac. Impervious Area 4-62- ac. Forebay Surface Area Z, 000 sq. ft. Marsh 0"-9" Surface Area 4,620 sq. ft. Marsh 9"-18" Surface Area 4 620 sq ft Micro Pool Surface Area / 9 O . . s ft , q. . Temporary Pool Volume Z5, (a /6 cu. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* (volume detained on top of the permanent pool) SA/DA used 2 • Iq Diameter of Orifice Z.O in. II. REQUIRED ITEMS CHECKLIST (surface area to drainage area ratio)* (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Best Management Practice Design Criteria - Constructed Wetlands - BMP#2 Drainage Area 12.28 ac Impervious Surface 6.62 ac Imp. Surf. Infrast. 2.09 ac. Imp. Surf. Lots 4.53 ac. Impervious Surface % 53.9 % Required SA/DA: 2.19 % Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 50 2.06 3.9 60 2.40 Surface Area Required: 11,729 sf (Drainage Area * SA/DA * 43,560) 1" Runoff Volume Estimate 23,856 cf (0.05+0.009(Imp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Storage Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 343 13,200 14,000 cy 25,615 cy 344 14,800 11,615 cy 344.75 16,172 e 23,856 cy X 1 hr = 0.1381 cfs 48 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.875 ft Area 4.414 in^2 Orifice Diameter 2.37 in (4*Area*3.14)^0.5 Orifice Size for 5 Day Drawdown Qailowable 23,856 cy X 1 hr = 0.0552 cfs 120 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.875 ft Area 1.766 in^2 Orifice Diameter 1.50 in (4*Area*3.14)^0.5 Use Orifice Diameter 2 in DWQ Project No. nZ - ('/(,,q V. 2 DIVISION OF WATER QUALITY • 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION (please complete the foil wing information : Project Name : I l e WA-5 Contact Person: dA5o, -3 Esrro l? Phone Number: (gist 469- 3340 For projects with multiple basins, specify which basin this worksheet applies to: 6MP 4.3 Permanent Pool Elevation 34 3 •4f)o ft. (elevation of the orifice invert out) Temporary Pool Elevation 3-10-60 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area 3, 300 sq. ft. (water surface area at permanent pool elevation) Drainage Area 4 • 3 ac. (on-site and off-site drainage to the basin) Impervious Area /• I ac. (on-site and off-site drainage to the basin) Forebay Surface Area 600 sq. ft. (at permanent pool elevation approximately 15%)* Marsh 0%9" Surface Area /,166 sq. ft. (at permanent pool elevation approximately 35%)* Marsh 9"-18" Surface Area /, /55 sq. ft. (at permanent pool elevation approximately 35%)* Micro Pool Surface Area 490 sq. ft. (at permanent pool elevation approximately 15%)* Temporary Pool Volume 5. 9 77 cu. ft. (volume detained on top of the permanent pool) SA/DA used / • OS% (surface area to drainage area ratio)* Diameter of Orifice 40 in. (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet 'or each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. 1 10 The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. ,_ io An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. Best Management Practice Design Criteria - Constructed Wetlands - BMP#3 Drainage Area 4.83 ac Impervious Surface 1.11 ac Imp. Surf. Infrast. 0.28 ac. Imp. Surf. Lots 0.83 ac. Impervious Surface % 23.0 % Required SA/DA: 1.08% Use 3' Deep on Table 1.1 of the NCDENR BMP Manual % Imp. SA/DA Portion 20 0.97 3 30 1.34 Surface Area Required: 2,274 sf (Drainage Area * SA/DA * 43,560) 1" Runoff Volume Estimate 4,503 cf (0.05+0.009(Imp. Surf.%)) X Drainage Area X 43,560 ft/ac 12 Storage Volume Estimate: (Use average area X depth) Elevation Area Volume Cuml. Volume 343 3,300 3,710 cy 5,877 cy 344 4,120 2,167 cy 344.5 4,548 Orifice Size for 2 Day Drawdown Qallowable 4,503 cy X 1 hr = 0.0261 cfs 48 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.75 ft Area 0.900 in A2 Orifice Diameter 1.07 in (4*Area*3.14)^0.5 e 4,503 cy X 1 hr = 0.0104 cfs 120 hr 3600 sec Q=0.6*Area(2(32.2)(Have))^0.5 Have 0.75 ft Area 0.360 in^2 Orifice Diameter 0.68 in (4*Area*3.14)^0.5 Use Orifice Diameter 1 in 360 355 350 345 340 00 d- PROPO SED EXIS TING GROUND 7d 98 LF OF-Tj 0 4 14- rn 0 vi - C? 0 C-4 10+00 HIGHCROFT VILLAGE WAKE Ni 11+00 STREAM CHANNEL IMPACT 1 CROSS SECTION DETAIL ROAD FILL 1 *=5' Vertical 12+00 1"=50' Horizontal WITHERR &- RAVENEL RNOINRRRf 1 PIANNRRS 1 RNRVRYGRR 08/21/06 08:03 FAX 9195354545 Todd Preuninger Withers & Revenel I I I MacKennon Drive Cary, NC 27511 WITHERS & RAVENEL INC. Q002 rem Rec a . ement q1l6 elk r4o PROGRAM ?. /& i?hers August 15, 2006 R Project: Highcroft Village Subdivision County: Wake The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCEEP will be approved. This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404 Permit/401 Certification within this time frame, this acceptance will expire. It is the applicant's responsibility to send copies of the 4041401/CAMA permits to NCEEP. Once NCEEP receives a copy of the 404 Permit and/or the 401 Certification an invoice will be issued and payment must be made. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following table. RIVER BASIN Cape Fear Cu 03030002 Wetland-Riparian ac 0.150 Stream-Warm ft - Wetland-Non-Riparian ac - Stream-Cool ft - Coastal Marsh ac - Stream-Cold ft - Buffer-Zone 1 s 11 - Buffer-Zone 2 s ft - Upon receipt of payment, NCEEP will take responsibility for providing the compensatory mitigation for the permitted impacts up to a 2:1 mitigation-to-impact ratio, (buffers, Zone 1 up to a 3:1 ratio and Zone 2 up to a 1.5: I ratio). The type and amount of the compensatory mitigation will be as specified in the Section 404 Permit and/or 401 Water Quality Certification, and/or CAMA Permit. The mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact David Robinson at (919) 715-2228. Sincerely, *4 ?, D. Gilmore, PE Director cc: Cyndi Karoly, Wetlands/401 Unit Monte Matthews, USACE-Raleigh Eric Kulz, DWQ-Raleigh File R;l'.s?-oru29... ... Pro" Our SM& North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1852 / 919-715-0476 / www,nceep.net RUG-21-2006 MON 07:52 TEL:9197336893 NAME:DWO-WETLANDS P. 2 AUG 2 1 2006 Office Use Only: oEt{F?+ H WETA4S S USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. 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: 12, 18, 39 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), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: Highcroft Investors, LLC Mailing Address: Attn: Glenn Futrell PO BOX 3557 Cary, NC 27519 Telephone Number: (919) 463-9940 Fax Number: (919) 463-9983 E-mail Address: gfutrell@jlgcorp.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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 117 MacKenan Drive Cary, NC 27511 Telephone Number: 919-469-3340 Fax Number: 919-238-2099 E-mail Address: tpreuninger(Dwithersravenel.com Page 1 of 8 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: Highcroft Village Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN) 0734.02-76-0395 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Highcroft Village Directions to site (include road numbers/names, landmarks, etc.): From intersection of US 64 and Hwy 55 go north on Hwy 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go approximately 1000 feet and site will be on your left. 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): 35.8015978 ON 78.8750136 °W 6. Property size (acres) 36.47 7. Name of nearest receiving body of water: Bachelor Branch 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: Currently the site is wooded. Land use in the vicinity is primarily residential. Page 2 of 8 A. 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of residential housing. Typical heavy equipment such as excavators will be utilized install the infrastructure (i.e. roads and utilities) 11. Explain the purpose of the proposed work: The project is needed to meet the growing demand for housing in the immediate area. 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. Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None Anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. 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. 1. Provide a written description of the proposed impacts: The proposed impacts consist of 147 linear feet of stream channel impact and 0.154 acres of wetland impacts associated with the construction of roadways, lot fill and BMP devices. Additionally, temporary impacts will consist of 24 linear feet of stream channel impact for utility line crossings. Page 3 of 8 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 Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Nearest Impact (indicate on map) herbaceous, bog, etc.) Floodplain Stream (acres) es/no linear feet Impact 2 Fill Headwater Forest No 250 ft 0.049 Impact 3 Fill Headwater Forest No 400 ft 0.034 Impact 4 Fill Headwater Forest No 400 ft 0.071 Total Wetland Impact (acres) 0.154 3. List the total acreage (estimated) of all existing wetlands on the property: <1 acre 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 acreaize. multinly lenizth X width. then divide by 43.560. Stream Impact Type of Perennial or Average Impact Area of Number Stream Name Impact Intermittent? Stream Width Length Impact indicate on ma Before Impact linear feet acres Impact 1 UT to Bachelor Branch Culvert Perennial 4 147 0.013 Impact 5 UT to Bachelor Branch Temporary Perennial 4 24 0.002 Total Stream Impact (by length and acreage) 171 0.015 Impact 5 is a temporary impact due to utility line installation. 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. dredizine. floodine. drainaue. bulkheads. etc. Open Water Impact Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact indicate on ma ocean, etc. acres NA NA NA NA NA Total Open Water Impact (acres) NA 6. List the cumulative impact to all Waters of the U.S. resultins from the oroiect: Stream Impact (acres): 0.015 Wetland Impact (acres): 0.154 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) 0.17 Total Stream Impact (linear feet): 171 Page 4 of 8 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. NA 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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: In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress and to allow emergency vehicle access if one entrance is blocked. 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 Page 5 of 8 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 bttp://h2o.enr.state.nc.us/iicwet]ands/strm,i4ide.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. Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. 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/wrp/index.htni. 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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): 0.5 Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) 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)? Page 6 of 8 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 ? X. 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 ? 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. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neuse), 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 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 NA 3 (2 for Catawba) NA 2 NA 1.5 NA Total NA NA XI. * 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. 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. NA 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. The proposed impervious surface for this project is expected to be approximately 39% following build-out. Dunne construction the applicant will utilize BMP devices to prevent sediment from entering Jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes, as per the Town Page 7 of 8 of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. 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. Sanitary Sewer 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 El 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 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: As stated by the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality October 3, 2002, version 1.6 prepared by the North Carolina Division of Water Quality, most residential subdivisions are unlikely to require a cumulative impacts analysis. The Hi croft Village property does not meet any of the three criteria of private development projects that can clearly result in cumulative impacts. The applicant will comply with the applicable local and state regulations pertaining to water quality, therefore, we do not anticipate downstream dejradation. 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). Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 Chapter 7: Development and Design Standards Sec. 7.10 Conneativa#y 1 Any residential development shall be required to achieve a connectivity index of 1.2 or greater unless the Planning Director determines that this requirement is Impractical due to topography, existing development, and/or natural features. In Street Connectivity Diagram [Reserved] the event that this requirement is waived, a six-foot pedestrian trail shall be provided to link any cul-de-sacs within a residential development In which the required connectivity index has been waived. A connectivity index is a ratio of the number of street links (road sections between intersections and cul-de-sacs) divided by the number of street nodes (intersections and cul-de-sac heads). The following Illustration provides an example of how to calculate the index. Street links on existing adjacent streets that are not part of the proposed subdivision are not Included in the connectivity index calculation. NOTE: The measure of connectivity is the number of street links divided by the number of nodes. Nodes exist at street Intersections as well as cul-de-sac heads. Links are the stretches of road that connect nodes. Stub outs shall also be considered as links. In this example, there are 11 links (circles) and nine nodes (stars); therefore, the connectivity index is 1.22 Street Arrangement 1) The proposed public or private street system shall be designed to ?.-n p 0 provide vehicular Interconnections to all similar or compatible adjacent A uses (existing and future) when such interconnections would facilitate [? 15 zU? internal and external traffic movements In the area. Such connections shall be provided during the initial phase of the project approximately every 1,250 to 1,500 linear feet for each direction (north, south, east, f west) in which the subject property abuts similar or compatible uses. If j the common property boundary in any direction is less than 1,250 linear i feet, the subject property will be required to provide an Interconnection if it Is determined by the Planning Director that the interconnection in that direction can best be accomplished through the subject property. Whenf the Planning Director deems a vehicular connection Impractical, he/she can increase the length requirement and/or require pedestrian connections. The Planning Director may delay the interconnection if such interconnection requires state approval or will result in significant hardship to the property owner. The intent of this standard Is to Improve access/egress for Town neighborhoods, provide faster response time for emergency vehicles, and improve the connections between neighborhoods. (2) Any development of more than 100 residential units or additions to existing developments such that the total number of units exceeds 100 shall be required to provide vehicular access to at least two public streets unless such provision is deemed impractical by the Planning Director or Town Engineer due to topography, natural features, or the configuration of adjacent developments. (3) Where new development is adjacent to vacant land likely to be divided in the future, all streets, bicycle paths, and access ways in the development's proposed street system shall continue through to the boundary lines of the area under the same ownership as the subdivision, Town of Cary Land Development Ordinance Page 7-83 WITHERS & RAVEN EL fIL[- COPI ENGINEERS I PLANNERS I SURVEYORS August 9, 2oo6 US Army Corps of Engineers Attn: Mr. Monte Matthews 65o8 Falls of the Neuse Road, Suite 120 Raleigh, North Carolina 27615 Re: Highcroft Village Subdivision Request for 404/401- Certification W&R Project Number - 02040191.00 Dear Mr. Matthews & Ms. Karoly, &X.poa-1tb(k YZ' NC-Division of Water Quality Attn: Ms. Cyndi Karoly 2321 Crabtree Blvd Raleigh, North Carolina 27604 E 03 @ [ -? anc? P AUG 1 0 2006 DENR - WATER uuHLITY WETLANDS AND STORMWATER BRANCH On behalf of Highcroft Investors, LLC, we are requesting authorization from the USACE and NC-DWQ to use NWP 12, 18 & 39 for the construction of a residential subdivision. The subject property is located on the south side of Green Hope School Road (SR 1621) approximately looo feet west of the intersection of Green Hope School Road and NC HWY 55• The site is approximately 36.47 acres in size and contains an unnamed tributary to Bachelor Branch in the Cape Fear River Basin. The Hydrologic Unit Code for this basin is 03030002. The Water Quality classification is C; NSW, and the stream index is 16-41-6-2-(1). Project History Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. Proposed Impacts The proposed impacts consist of 147 linear feet of important/perennial stream channel, o.15 acres of wetland impacts for road crossings, lot fill and stormwater BMP's. In addition, 24 linear feet of stream will be temporarily impacted for utility line installation. Impacts are summarized in the table below as well as in the PCN form. NWP # Impact # Linear Feet SF Acres 39 Impact 1 147 58 0.01 39 Impact 2 NA 211 0.049 39 Impact NA 1472 0.034 18 Impact NA 125 0.071 12 Impact 5 24 95 0.002 Total 1 i 727 0.1 ill MacKenan Drive i Cary, North Carolina 27511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com 7040 Wrightsville Ave i Suite 1o1 i Wilmington, North Carolina 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 Avoidance and Minimization In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress into the site and to allow access for emergency vehicles in the event that an entrance is blocked. Stormwater Management Plan The proposed impervious surface for this project is expected to be approximately 39% following build-out. During construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes constructed wetlands, as per the Town of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. Mitigation Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. Please feel free to call if you have questions or require additional information. Sincerely, WITHERS &RAVENEL, INC. Todd Preuninger Attachments 1) PCN Form 2) Site plans 3) Agent Authorization 4) USGS Quad 5) Wake County Soil Map 6) Stormwater Management Plan Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. f Lp O Z - I I to R V (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 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: 12, 18,39 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 eck here: ?17?/7 II. Applicant Information U 1. Owner/Applicant Information our z o zoos Name: Hi hcroft Investors LLC RtgR . wAT Mailing Address: Attn: Glenn Futrell ATFRBwo _ PO BOX 3557 Cary, NC 27519 Telephone Number: (919) 463-9940 Fax Number: (919) 463-9983 E-mail Address: jzfutrell@,ilpcorp.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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 117 MacKenan Drive Cary NC 27511 Telephone Number: 919-469-3340 Fax Number: 919-238-2099 E-mail Address: tpreunin erkwithersravenel.com Page 1 of 8 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: Highcroft Village Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only) NA 3. Property Identification Number (Tax PIN): 0734.02-76-0395 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Highcroft Village Directions to site (include road numbers/names, landmarks, etc.): From intersection of US 64 and Hwy 55 go north on Hwa 55 for 3.8 miles and turn left on Green Hope School Rd (SR 1621). Go approximately 1000 feet and site will be on your left. 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): 35.8015978 ON 78.8750136 °W 6. Property size (acres): 36.47 7. Name of nearest receiving body of water: Bachelor Branch 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/mays/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Currently the site is wooded. Land use in the vicinity is primarily residential. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of residential housing. Typical heavy equipment such as excavators will be utilized install the infrastructure (i.e. roads and utilities) 11. Explain the purpose of the proposed work: The project is needed to meet the growing demand for housing in the immediate area. 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. Soil and Environmental Consultants conducted a detailed wetland delineation prior to site plan development so that wetland impacts could be minimized to the maximum extent possible. Mr. Monte Matthews, with the USACE, conducted site meetings to verify the wetland delineation. We are in the process of completing the wetland delineation map for USACE approval. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. None Anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. 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. 1. Provide a written description of the proposed impacts: The proposed impacts consist of 147 linear feet of stream channel impact and 0.154 acres of wetland impacts associated with the construction of roadways, lot fill and BMP devices. Additionally, temporary impacts will consist of 24 linear feet of stream channel impact for utility line crossingLs. Page 3 of 8 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 Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Floodplain Nearest Stream Impact (acres) (indicate on map) herbaceous, bog, etc.) ( es/no) (linear feet) Impact 2 Fill Headwater Forest No 250 ft 0.049 Impact 3 Fill Headwater Forest No 400 ft 0.034 Impact 4 Fill Headwater Forest No 400 ft 0.071 Total Wetland Impact (acres) 0.154 3. List the total acreage (estimated) of all existing wetlands on the property: <1 acre 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 Type of Perennial or Average Impact Area of Number Stream Name Impact Intermittent? Stream Width Length Impact (indicate on ma) Before Impact (linear feet) (acres) Impact I UT to Bachelor Branch Culvert Perennial 4 147 0.013 Impact 5 UT to Bachelor Branch Temporary Perennial 4 24 0.002 Total Stream Impact (by length and acreage) 171 0.015 Impact 5 is a temporary impact due to utility line installation. 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 Name Waterbody Type of Waterbody Area of Site Number (if applicable) e) Type of Impact (lake' pond, estuary' sound bay' Impact indicate on ma ocean, etc. (acres) NA NA NA NA NA Total Open Water Impact (acres) NA 6. List the cumulative impact to all Waters of the U.S. resulting from the nroiect: Stream Impact (acres): 0.015 Wetland Impact (acres): 0.154 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) 0.17 Total Stream Impact (linear feet): 171 Page 4 of 8 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. 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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: In order to access the entire site wetland and stream impacts could not be avoided. Impacts were minimized at stream crossings through the use of steeper fill slopes, 3:1 rather than 2:1, and the crossings were made at a nearly perpendicular angle. The road alignment in the northwest corner of the property was dictated by the Town of Cary and therefore, the wetland impacts could not be avoided. In addition, two access points are needed for safe egress and ingress and to allow emergency vehicle access if one entrance is blocked. 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 Page 5 of 8 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/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. Because the stream impacts are less than 150 linear feet we do not believe that mitigation should be required for impacts to the streams on-site. The applicant proposes payment to the NC-EEP to satisfy mitigation requirements for impacts to jurisdictional wetlands. 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/wrp/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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): 0.25 - 0.5 Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA 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)? Page 6 of 8 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 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 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 Multiplier Required (square feet) Mitigation 1 NA 3 (2 for Catawba) NA 2 NA 1.5 NA Total I NA I I NA * 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 2B .0242 or.0244, or.0260. NA 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. The proposed impervious surface for this project is expected to be approximately 39% following build-out. During construction the applicant will utilize BMP devices to prevent sediment from entering jurisdictional stream channels or wetlands. In order to protect downstream water quality, the applicant proposes, as per the Town Page 7 of 8 of Cary and NC-DWQ stormwater requirements. We have included a copy of the stormwater management plan for your review. 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. Sanitarv Sewer 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 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: As stated by the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality October 3, 2002, version 1.6 prepared by the North Carolina Division of Water Quality, most residential subdivisions are unlikely to require a cumulative impacts analysis. The Hi hg croft Village property does not meet any of the three criteria of private development projects that can clearly result in cumulative impacts. The applicant will comply with the applicable local and state regulations pertaining to water quality, therefore, we do not anticipate downstream 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). __ ! 16 6ho /0 Applicant/Agent's Signature / Date/ (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 ?/ f? ?` ~ )` V ?? 110033 1? rr/ ?`r? t v? ?/? 66 t Cem l _I. 0 'Q i/ `',1 ';?:j ? -..? fit` ` •?`?? 'do J h 1? ???' ?. '.+ ? ?°o ???1•+ fly -? I ?, .T I , .` ?. 1,.> ?? ?• ?•?? 16 I A-k lit Jh. 6 t ? WITHERS R"ENEL Hightcroft Village Site Boundary N ENGINEERS I PLANNERS I SURVEYORS E 111 MacKenan Drive Cary, North Carolina 0 2,000 4,000 S telephone: 919.469.3340 _ www.withereravenel.com FPPt ME 1 INUIVIDr-n (Joins sheet 35) wsc - v crBZ SB2 wac2 S ? W-f CrC2 2 GrB2 + Cr62 - . WsC2 CrC2 r - G?V od P- MB2 5 WsE y CrC2 1 C2 W h aC2 .. _ WsBL*' W C2 \! S WsC2 WsB2 rC2 - / S - "' %i'_ - -- CrB2 ?? WsC2 IVSB2 r ' WSB2 'w ? ? / WSW sE W n - 3' . , CrE MfB2 p ' ctci z \ rV' ?... - e w WSW ? .. F 4 2 I f ' C C B2 o O 0 WsE . t i .. r CfC t62 a Ws82 - 2 . Cr82 .. /' W y s CrC ' i WsB2 ;2 WsB2 Ws 82 62 ; WsC2 waC : . ? ` Y ? l gt -- r;. Cre2 \ # c V 2 S w OrG2 \ W C2 St s wsE ?= c w:ez i Crcz I wsQZ It m / 3 I w l WsB2 ' CrC . rC WsC2 ro4' • / Ws4 2 C ! Cr82 ___ Wy t \ ? . : _ 4* / CrB2 CrCY' u WsC2 F,. Fr - r I Ws 2 .. - -. i S Y o clc f f b//? / ry WsC2 W c WSC 0 z yo ? 8 ' IT Cr ? CrB2 ?, ? k ? ?? > .?VSE r Cry . ? a < h ^? II c. WSC2 o'IL • ;- . S * ( C W.2 _ . ?_ .... • / r { Y ? E i C 00 , WSC2. WSE . :r L ? _ O lA '! sL :1 . w8m I Mfc % m 8 ??'r': ? ? vl ? I ? F s ,, a, CrB2 r ?? W Gr8 ` ' 4>bs?Z ; ?ff.,s, , \I' \ h41C2 ` , nr, Ct62 . l r $c h 4 ` .e682 MISB2 \ N 1 . r.. vl,•. .,' . NsC2.. II ?3_,CrC t.rQ2 + 1 l? scz W \ crc ` c;V? " WSB2 CrB2 Crc r A CrB2 E . rC Gr6 2 SE • ., ?' '1 ? i C 2 s WSG9 / ' rG2 Oti i! _ CrC " c` c CrB2 s WS c .,F. WsC2 Tr ruAfA Af CIC' `° r % A ? . C C? WS i - CrE r h rQ2 . WSC2 K r 55 c: o I a t All WS I t wsQ2 s WaC2 N? w sC l I i . WITHERS - R"ENEL ENGINEERS 1 PLANNERS I SURVEYORS Site Access/Agent Authorization Form Project Name: Property Owner/Contract Purchaser: Address: CAQV _ ?,, C?s?1.,N.? 27/9 Phone: (9/4) 463 -9940 Fax: (Ito) 46 3 - 9q6.!5> Email: GFUnga!LGR -&GGGRP. Goner I hereby grant Withers and Ravenel, INC permission to conduct environmental studies on the property described above. In addition, I authorize Withers and Ravenel to act on my behalf as my agent when conducting site meetings and/or correspondence (i.e. permit applications etc.) with the USACE and the NC - Division of Water Quality, if necessary. Property Owner: 61EAWJ FUTTLELL. Date: "3b- (Print JName) vL9-?- (Signature) NORTH CAROLINA ECOSYSTEM ENHANCEMENT PROGRAM, NCEEP IN-LIEU FEE REQUEST FORM Revised 5/16/2006 Print this form, fill in requested information, sign and date, and either mail to NCEEP, 1652 Mail Service Center, Raleigh, NC 27699-1652, or fax to 919-715-2219. Attachments are acceptable for clarification purposes. All correspondence from NCEEP will be to the Applicant, with a copy to the Applicant's Agent (if indicated). CONTACT INFORMATION APPLICANT APPLICANT'S AGENT (optional) 1. Business or Individual Name Highcroft Investors LLC Withers and Ravenel '? - -2..Street Address or P O Box PO BOX 3557 111 MacKenan Drive 3. City, State, Zip - Cary, NC 27619 Cary, NC 27511 ~ 4. Contact Person Glenn Futrell Todd Preuninger _.._...___._.-.__-....... 5. Telephone Number 463-9940 469-3340 I 6. Fax Number 463-9983 238-2099 7. E-Mail Address (optional) gfutrell@jlgcorp.com tpreuninger@withersravenel.com - -- .................................----....._..._.............._..--.__._...__...._..._...........--.--.....-- --- -_. PROJECT INFORMATION _...... _......_.......... ...... __............... -............... ......_............... ---............ ----._....... .__........... ._?... _ ..__..._.__.._._............. ......... _ __....----.--.-.-.--.._...__._-_....._.._.... _._..... _-._..___ 8. Project Name Highcroft Village Subdivision _...._..._........ 9. Project Location (nearest town, city) _.... ._....._-_...._ _....._..... __. Cary, Wake County, NC _ ............._._._........._..._..._....-..... ..... ..-........ _....--.......... -_....... __...-..... _..._-...... --- 10. Lat-Long Coordinates (optional) __.........._... .._...._......... _-..-_..._-.._........ ..._......... __.......... _...___....... _..... -_...... _ ._--____........... __........... 35.8015978 ON 78.8750136 °W .........-.......... --....__._..... ..- Project County __......... .. _.._....._._-.... _....._r...._..._-__._._..__ ._....___._.............._....... ......... ......... ;Wake 12. River Basin Cape Fear . ......... .....__..__..-..._-- -....... ......_..__._........... . 13. Cataloging Unit (8-digit) ._.?....... _.__............ -__ -_-...__....... _ __..___....._..._........ ._-.... _.... 03030002 .__.......... ---- ._. - ?... __ ..._.-..._. _._-....... . -- 14. Riparian Wetland Impact (ac.) (e.g., 0.13) ---- - -...w_..__ _.... -... --.....__....?.__..._. -_..._._._...._._.-._........-_............._......._.._.... 0.15 _ .....__..._._............__........... -._---..._.-._.__..._ -......_._..._ .................. _......... 15. Non-Riparian Wetland Impact (ac.) ....-........ .___...... __ . ..... _ ..._..__........ 0 _....._-._-_....... --..--......... __...__-. ...... ....... _................. _............. .. 16. Coastal Marsh Impact (ac.) ..._..._.._-.._.._........ -..._ ._.._-....._....-......._.__....w........ 0 17. Stream Impacts (ft.) (e.g 1,234) Warm Cool Cold 0 0 0 _..__.... -__...... -- .......... '__. _._..__u ....- -- .............. _ ......_.___.._........... 18. Buffer Impact-Zone 1 (sq. ft.) (e.g. 12,345) _.._ _ ._...._. _..,_..._ _ . _ _ _ 0 __........---.....__.._ ?...__ __._ - .......?......... ._ .............._?.. 19. Buffer Impact-Zone 2 (sq. ft.) __.?._ _ ?_...... ?_ __.......__.. - _ _._._..._....._.._....... ...__.......... 0 _._?....._.__..-........... _.._..___..__........_-_._...._-.- IMPORTANT -..__-_.__ . -_..._._.___._..___...._._.- .__._? . __..._. __..._._.-_......_... _......_._ Signature of Applicant or Agent: Check (J) below if this request is a: Q revision to a current acceptance, or Date: (9/?p O (o ? re-submission of an expired acceptance Buffer mitigation applicable only in the Neuse, Tar-Pamlico and Catawba river basins, and the Randleman Lake Water Supply Watershed. For help in determining the Cataloging Unit, go to EPS's "Surf Your Watershed" web page: hftp://cfpub.epa.gov/surf/locate/index.cfm Direct all questions to Chris Mankoff at 919-716-1921 or chris.mankoff@ncmail.net I 7 `/ ! ' S"RMWATER MANAGEMENT IMPACT 1 589 SF, 0.01 AG 147 LF CHANNEL p i t It f ? ??r J1 tr 7i! ,?' r ? ? t i t rI r 1 I I + 1+ y f ;' ?t t` st I I i O CA IMPACT 2 r . -, - 1 + f 11r I'll / s r r? i Ml t -. _ / / r f 100, , 1000, ( t 14, 1 .t, / .. 0. -T r J r t J? a ,ool l 1JJI ? r r .- .??? ?? j \ - \ 1 ?l I1 t 14 , 1 j r ' T MHOR?AR?f ,1• t Z IMPACT 5" ? `9, SF. 6.002 AC -J -;; ?? erg- ? ? // ???/ F ??`•, ti^ ? °?>?,? ' , i I r ' J e' ? \t ! ' / o,ooll / J It % r r r r s• f ; ( l - rr r J! A2 f r 'ro r / -' i a i , ? Jf J •' r 1 .' .'•? ?' ? GRAPHIC SCALE /1 50 0 25 50 1 inch = 50 ft. • HIGHCROFT VILLAGE PROPOSED WETLAND WITHERR &- RAVENEL IMPACT MAP 111111114111111102 1 PLANNINN 1 NNNYItONt CARV WAKE North Carolina H T 4 OF 4 ! / ?•. rrr r,r ---I-- / r IMPA I r' J Atf5 SF,/0.10 I i' ?J / r IMPACT? ?3 l.472,5F. 0.03 A§ 1 -- r / r J / / o J ?rn HIGHCROFT VILLAGE PROPOSED _/ / r i r i i r i i r J II I '\ if r r /I r r if \ / r r / / / ! !/ r ! J I--/ /yam[ -?,_- ------------ J ! GRAPHIC SCALE 50 0 25 50 100 1 inch - 50 ft. ND IMPACT o 3 * a ? a a a s a Q W) 0 M 0 N 0 LO a o o `•° C C O C 0 0 C LL. U- LA- W LL. Q fn M (n N V) IA cn N 0. 2 ?- W cn W N N .h C', (n a 00 0) Do 00 N M W LO U) n 3 p N M z U N w n M w n M w n 0 O ? N n 0 o D p ~ (n Cn N - LU o J J Q W u o N p cn o Z .l [ w Wm LL. ad O) U o ,n s °L a W za J N =? a :oa ? ' I I I ?r ?t N N :sa` :?: :?<< W W ? fsal Od LMl /i ' OL : : ZL r : CL i ;' ': W Z swage alu cul T a man c'?i'`?u a?n I _ b ? ? w / w / f /,? 111 ? 11 ? NM ® ® ® / _ ,? © ® ® o O L NO f 3 i ®° ©® I I U W o LL- ® ® ° ( O 3 c w / ® ?' a N I ?° U O o „? - inn as avoa -GoHos 3doH N33"' O o v I I--- I I L L ?_. 0 Z aea7NOW3B NOSH' - NY IY.aI:a "a ' Am '1P-1 -&a'dm Gw uM\sowmm\ulw\Oal-ro\w\:H I I WITHERS & RAVENEL ENGINEERS I PLANNERS I SURVEYORS Storm Water Management Support Data & Calculations Highcroft Village Subdivision Cary, Wake County, North Carolina Project No.: 204191.0 Prepared by: Withers & Ravenel, Inc. 111 MacKenan Drive Cary, North Carolina 27511 Jason A. Bertoncino, PE r+° July 27, 2006 tit l/llllllil v1 MacKenan Drive i Cary, NC 27511 1 tel: 919.469.3340 1 fax: 919.467.6008 i www.withersravenel.com 7040 Wrightsville Avenue i Suite 101 i Wilmington, NC 28403 1 tel: 910.256.9277 1 fax: 910.256.2584 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: g1o.842.9392 1 fax: 910.842.8019 I DWQ Project No. DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMA ION (please compete the followin information): Project Name : htZol ILLAG,E - ?H-OkGE L Contact Person: t Mo" BUxT.uG,,,>o Phone Number: ((?14 ) 40- 33 For projects with multiple basins, specify which basin this worksheet applies to: 8M P '02_ Permanent Pool Elevation Temporary Pool Elevation ft. 34Z-00 339• o o ft. (elevation of the orifice invert out) (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Forebay Surface Area Marsh 0"-9" Surface Area Marsh 9"-18" Surface Area Micro Pool Surface Area Temporary Pool Volume SA/DA used Diameter of Orifice REQUIRED ITEMS CHECKLIST /3, ZOO sq. ft. /2 Z8 ac. (. GZ ac. Z ooo (oZ0 sq, ft. s ft "6 Zo q. . sq. ft. 960 sq. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%a)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* Z cu, ft. (volume detained on top of the permanent pool) Z• Z (surface area to drainage area ratio)* Z. 5 in. (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. IVI? The basin side slopes are no steeper than 3:1. A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. ??v An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. DWQ Project No. DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET*) WETLAND WORKSHEET 1. PROJECT INFORMATION lease complete tt}e following information): Project Name : il_c E --pfIASE J_ Contact Person: J S c1n?O, P9 Phone Number: q/q 6 4 - 33 For projects with multiple basins, specify which basin this worksheet applies to: $nt Q 3 Permanent Pool Elevation 343.06 ft. (elevation of the orifice invert out) Temporary Pool Elevation 339.50 ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area 3.300 sq. ft. Drainage Area 4.0-75 ac. Impervious Area /. // ac. Forebay Surface Area 5 00 sq. ft. Marsh 0"-9" Surface Area 11155 sq. ft. Marsh 9"-18" Surface Area /, /55 sq. ft. Micro Pool Surface Area 490 sq. ft. (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (at permanent pool elevation approximately 15%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 35%)* (at permanent pool elevation approximately 15%)* Temporary Pool Volume y6 9 cu. ft SAIDA used /. 08 °% Diameter of Orifice 126 in II. REQUIRED ITEMS CHECKLIST (volume detained on top of the permanent pool) (surface area to drainage area ratio)* (draw down orifice diameter) Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch rain. The basin side slopes are no steeper than 3:1. _ A planting plan for the marsh areas with plant species and densities is provided. Vegetation above the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The temporary pool draws down in 2 to 5 days. Sediment storage is provided in the permanent pool. A sediment disposal area is provided. Access is provided for maintenance. A site specific, signed and notarized operation and maintenance agreement is provided. The drainage area (including any offsite area) is delineated on a site plan. Access is provided for maintenance. Plan details for the wetland are provided. Plan details for the inlet and outlet are provided. A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see http://h2o.ehnr.state.nc.us/ncwetlands/oandm.doc). * Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR Stormwater BMP Manual, April 1999. 10% open water, 50% high marsh, 40% low marsh. HoMw il3imimIS an scwuw unarm) H31dM - aN30 soon o r one 6lAag*J 2GiVMON L UN394O9OO 00'000'Z 00'0 00'0 00'000'Z Sle;O,L DMa-2JNK ON 00'000'Z 00'0 00'0 00'000'Z Lltil£00 90/£/9 n};0a0y6iH46W170Z0 junowy ION Aed snoinaJd s;unoosia }unowy jayonon ale(] jagwnN 9010AUI 6 Z'76 Z '3NI `13N3Adb T Sa3HAM #4 REBAR 12" 0. C. EACH WAY ELEVA TION 2000 PSF MIN. BEARING CAPACITY BENEATH COLLAR 1/2" PREFORMED JOINT i=u LER, 12" WIDE SECTION SEE SHEET 7A FOR SIZING DATA TYPICAL ANTI -SEEP COLLAR NTS STANDARD 2' X 2' GRATE AND FRAME PER NCDOT 830.16 CENTERED OVER STEPS AND DRAWDOWN VALVE 6" PRECAST CONCRETE SLAB PRECAST REINFORCED BOX TYPICAL TRASH RACK VENT NOTE: SKIMMER MAY VARY SLIGHTLY FROM ILLUSTRATION OUTLET END; CONNECTION TO OUTLET PIPE OR RISER NTS SCREEN ACCESSIBLE THROUGH DOOR FLOAT BARREL PIPE LONGER THAN SHOWN NOT INCLUDED WITH SKIMMER SUPPLIED BY USER FLEXIBLE JOINT (NOT TO EXCEED 3' IN LENGTH) TEMPORARY SEDIMENT DEVICE DEWATERING SKIMMER DETAIL WS USE 2.5" SKIMMER W/ 2" HEAD (TYP.) No. Revision Date B 1 1st. REVIEW COMMENTS PER TOC 01/27/06 MS 2 2nd. REVIEW COMMENTS PER TOC 03/10/06 MS 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB Designer W&R Scale 1" = 50' Drawn By Date MS 12/02/05 Checked By Job No. JBC 204191.0 CARY /'/1MICCOVATMAl crani k1f%MAIAI Mr%nf POND BOTTOM NOTES QVIAAWr D 4" DIP VENT & CLEANOUT PIPE 4" CAP WITH DRILLED ORIFICE (SEE TABLE SHEET 7A FOR SIZE) -' PLACE STEM SUPPORTS AT 3' FROM BASE ATTACH SKIMMER FOR EROSION CONTROL PHASE OF PROJECT -- " DRAW DOWN OUTLET \\ \\ \\ \\ \\ \\ \\\\/�\\�\\�\\�'�\�\\ 4" NRS GATE VALVE CROSS CONCRETE PRECAST BOX JOINTS SHALL BE MECHANICALLY FASTENED WITH 114" x 2" STEEL STRAPS BOLTED WITH 3/4" BOLTS GROUT EACH SIDE RISER & DRAWDOWN DEVICE DETAIL NTS (1) RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED AT PRIOR TO THE BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT CONTROL DEVICE DURING ROADWAY AND UTILITY CONSTRUCTION. ONCE THE SITE HAS BEEN STABILIZE AND GRADING IS COMPLETED THE BASIN SHALL BE CLEANED OUT AND STABILIZED. THE SKIMMER DEVICE SHALL BE REMOVED, THE BOTTOM DRAIN CLOSED AND THE NORMAL POOL ESTABLISHED. (2) FINAL SEEDING OF ALL AREAS WITHIN TWO FEET OF ELEVATION ABOVE THE NORMAL POOL SHALL BE A MIXTURE OF PANICUM CLANDESTINUM (DEER TONGUE) AND PENNISETUM GLAUCUM (PEARL MILLET). SEEDING RATES SHALL BE AS RECOMMENDED BY THE SUPPLIER. (3) ALL BMP DEVICES SHALL BE SCREEN FROM OFFSITE, INCLUDING ON—SITE LOT, VIEWS WITH AN EVERGREEN SHURB SCREEN AS REQUIRED BY THE TOWN OF CARY. HIGHCROFT VILLAGE SUBDIVISION WAKE COUNTY NORTH CAROLINA SECT Nrs. CONSTRUCTION SEQUENCE rX%�r- VV I LC I r1IrG 1. INSTALL EXISTING POND OUTLET PIPE. 2. INSTALL SILT & TREE PROTECTION FENCE AT TOE OF FUTURE BMP DAM. 3. INSTALL BMP RISER AND DOWNHILL SLOPE. 4. STABILIZE BMP DAM SLOPES WITH SEED & MULCH. 5. CONTACT TOWN OF CARY EROSION CONTROL OFFICER FOR REVIEW. 6. BEGIN ROADWAY AND DAM REHABILITATION SLOPE GRADING. 7. MAINTAIN AS MUCH DRAINAGE AS POSSIBLE INTO BASIN. 8. ONCE SUFFICIENT AREA IS STABILIZED AND THE TOWN EROSION CONTROL OFFICER ALLOWS THE REMOVAL OF THE SEDIMENT CONTROL DEVICE COMPLETE INSTALLATION OF THE PERMANENT STRUCTURE. 9. CALL ENGINEER FOR FINAL INSPECTION. STORMWATER MANAGMENT BASING DETAIL V@19OWNDO AUG 1 0 2006 DENR - WATER UIJALiTY WETLANDS AND STORMWATER BRANCH N CAR °°GESS/n: Lkif 0 25944 ° 0000°C R 0000_ A. WITHERS & RAVEN EL ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com �671i7(©;� Sheet No. 713 1 , / - _ _ , I I 1 , , , , / / / I I I / I I I , I I I I I , , O , \ / , , , , , I , , i / / l l l i / ! !I I j / ! I J , / I / I I t , f I , / , ! ! / / / , / , / , / l ~ , ~ I 1 I 1 f 1 r! , 1 /7 / 1 l1 / Q~ / _ LGktSTRUM B ~ SCREEN,•5' ZS C. , /ti / I - 1 ~ ~ r I I I I 1 I f ~ / ! ! / ! I / , / I I , , / / I , / / ~ , r I l 1 - ~ ~ ~ r I / , l l r I - , r / / / ~ , , 1 / / ~ ! ~ / / ! / / , , / / ~ / / 1 / / / _ / r , / / / / l l I / ~ ~ 1! 7 i t II l ~ l 7 l l ~ I r r i / ~ l l r ~ , i / l ~ l I l ~ _ r / / / _ - , , / / w , r / 7/ ~ / ~ 1/ I A / / l ! / / , l j r! /!l ~I vv I ' l 1 / ! I I , / I; ; ~ vv ~ IGUrSTRU~I BMP,`SC EEN 5 O.C. l , / / ~ ~ ~ 1 / / / r , r / / !~I ~1~ v ~ 1~ I 1 I I1 ~ l / l / I / / / 11~ ~ ~ I I / / r / / , Cj - I ! / ~ , , ,i~ ~ I / , / / i / / I / \ / / / / r 7 / / / ~i l I I I / 1 1 1 1 , , , I I \ I / / \ 1 1 1 I I ! , , _ I , ( , , _ / r ~ / ' ~ I I l l I I I I I / I \ I I \ I I 1 I , 1 / / / / , , / -T- - - E ~ / / ~ , , _ ! , , ' , I I I / I 1 I ~ I I I ,i , ` , I /,/i, ~ 1 1 I I I ~ II 11 , II I I / / 1 ~ i' / ' rr , , , , l' I I I / I I I I 1 ,'~i'' ~ ~ I I' 1 .'.'F'. / I 1 , y. , / , , I ,eC , , , / III 1 1 \ / , I I ' ' / ~ X34 ' •••r ~ 1 r ~ 11 I I i ~ S~ / i y.. ..i ! I I I / , , r- ~ ' , , ' ' ' , / \ .,...Q.'.F'...,.... 1 I I I I li 1 , , / i ~ , , / , ' , , , I , , / , , , , , j 1, , / / ' i' / , , / / , 'L ' / - ' I / / / / / ~ , , //r_- - , ' _ \ !1 _ " J :.:.~1.:.:.'!: ' I I it \ 1 1 1\ / / ' _ _ ~ / / ~ _ ice, ~ ! I I II 1 1l1 / , , , / , , / ll/ 11 , , ~ ~ / , / , , I r',' 111 , , , , , / , / , ,,,I ' r / ` , ' ' 1 \ HIGH MARSH f 4,620 SF I \ / / / / / / / / ' / / 11 . ~ HIGH MARSH f 1 960 SF / _ ,i , ~ , , , ,i , / I/ I ,i = ~ - ~ - I LOW MARSH t 4 620 SF \ 1 I ~ ~ / ,3 \ / ' ~ / \ ~ 1 \ \ ~ ~ ,~J LOW MARSH f 1,960 SF , ~ , / ~ rri I OPEN WATER f 3,960 SF ~ , , , ~ , " ri l I ~ ~ `l 1 I \ ~ \ / OPEN WATER f 1,680 SF 1 \ \ \ ~ ~ ~ \ / ~ ~ ~ I I / , ' / ~ , / ~ / I I 1 ` ~ _ . . .....I... , \ \ \ ' / ~ 0~ / / / I 11 / i , / / ~ , , / / r l` / / ( I V % I I , . . . ..I. - 1 \ . , ~ 1 / / / DIMENSIONS ELEV. / - ~ _ _ _ DIMENSIONS ELEV. ~ - , , - / / . I . . \ - ' - - _ _ s.•:•.•:•:'!' NORMAL POOL 13,200 SF 342.00 , - _ _ \ i NORMAL POOL 5,500 SF 373.00 \ '.1.t.' '.~.'.1'.'.'.'.'. • \ \ ' . TOP OF DAM WIDTH 8' 345.00 W , ~ / / / " TH 8' 376.00 i TOP OF DAM WID , , , \ , ~ ~ • ~ ~ ANTI-SEEP COLLAR 54 x 54 \ ' ~ / ~ - ~ ~ ~ ANTI-SEEP COLLAR 48 x 48 , , , , ~ 1 ' / , , , \ I I , y l \ . . ' ~ " 1-YEAR STORM ORIFICE 2.5 342.00 ' ' ' / _ 1-YEAR STORM ORIFICE 2" 373.00 ,,'l,' \ ~ ~ ~ - --39 369.50 1 ,s ~ / ; / _ TOP OF ANTI-FLOATATION 7 x 7 x 2 • , , , % " • • • • ~ TOP OF ANTI-FLOATATION 8 x 8 x 2 339.00 , , / \ T q,~ / TOP OF RISER WEIR 4 x 4 BOX 374.50 ; , ,S' - -5~~- • TOP OF RISER WEIR 5 x 5 BOX 343.75 \ / _ I _ • • ; • • ~ OUTLET PIPE INVERT IN 30 RCP 339.00 ~ OUTLET PIPE INVERT IN 24 RCP 370.00 ~ ~ , ! / \ 1 ' ~ OUTLET PIPE INVERT OUT 24 RCP 369.00 , „ , `7 . / / ~ OUTLET PIPE INVERT OUT 30 RCP 338.00 / , Vii, / ~ / / / , , / / , ~ % ~ Pf_ANT LIST PLANT LIST QUA SPECIES COMMON NAME ROOT SPACING LOCATION 650 Iris virginica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge QUA SPECIES COMMON NAME ROOT SPACING LOCAl10N 90 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh - 270 Iris vir inica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge 9 , 1,110 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18° o.c. High Marsh ~ 45 Juncus biflorus Shore Rush Quart Cont. 2 o.c. High Marsh SCALE 1 =30 Arrowhead Peat Pot 18" o.c. Hi h Marsh SCALE 1 ~~=30' 1,665 Pontederia cordata Pickerel Weed Peat Pot 2~ o.c. Low Marsh 470 Sagittana latifolia Broadleaf 9 185 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 570 Pontederia cordota Pickerel Weed Peat Pot 2' o.c. Low Marsh 44 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter 65 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 65 Ugustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter / Y ~O'~ / / ' / ~ \ ~ / / 1 1 11 ~ ' , / 11 , \ (v / \ \ 1 1 ~ 1 1 1 f ~ ~ „ \ ! \ \ 1 1 1 \ 1 , \ , \ \ \ ~ 1 ~~~q// I 1 \\1 \ \ I 1 \ 1 1 ' ~ \ ~ ' ' \ 1 1 ' II 11 11 \I 1 I / / , / / I \ ' \ \ ~ a ~ I 1 1 ~1 I 1 , , \ \ I / ~ ~ 1 1 y ~ 1 VII I ~ , , / ' \ ` 1 1 1 1 \ ' I 1 / ' ' ' - ` ` ~ ~ \ 171 11 \ 11 ~'/III I I! 'i ~~~Y \ , I I 1 I ,I ~ , ~ i' mac, ~Sl \1 • 1 1 \ 1 / \ / / / ~ ~ 1\ 1\ \ \ y \ \ , ~ I! \ ~ ~ / , l C ~ , / / 11 \ \ y i' 1/ \ / , / / / t~ \ \ \ 1 \ , ~ ~ \ \ \ ~ 1 / \ / ' / / \ ` ~ 1 ` / ! II I / ~ . X350 \ \ III I / / \ \ \ ~ 1 ~ ~ ~ ~ ~ - ~ 1 ' HIGH MARSH f 1,155 SF / ~ I II ~ ~ / , 1 II / ~ ~ ~ LOW MARSH f 1,155 SF , ~i , / ~ / ~ OPEN WATER t 990 SF , / / / ~ ~ r r , , ~ / l d / ! / / / ~ ~ ~ ~S ONS ELEV. • - s DIMENSI , I / _ \ ~U ~r 3 300 SF 343.00 ((~~,yy,,~~++ I , , ~ ; ' NORMAL POOL , ~FN ® Z 0~6 ~ 1 . ~ , I / ~ TOP OF DAM WIDTH 10 347.00 ~slrFR ' / I ~ ~ 9~' ~ ANTI-SEEP COLLAR 54 x 54 oUq~~ ~R '~l ~ % ' ` ICE 1.25" 343.00 LIGUSTR(J M ~R ~N, 5 .C,. / 1-YEAR STORM ORIF - ~ _ ~ ~ ~ ~ _ ~j~. / ~ ~ ' x 7' x 2' 340.00 / ~ / TOP OF ANTI-FLOATATION 7 ~ ~ ~ ~ ~ 4 x 4 BOX 343.50 , 1, ~ / _ _ TOP OF RISER WEIR ' 24 RCP 339.50 ~ ~ ~ OUTLET PIPE INVERT IN , OUTLET PIPE INVERT OUT 24" RCP 338.00 °°°p0oooo°°oooc°0e°0° CA • ~~e.e°eeR~l o O~ooo °pe ~ PLANT LIST ~ ° FESS! ~ ° f~0 QUA SPECIES COMMON NAME ROOT SPACING LOCATION eQ e e 0 ° SEA 160 Iris vir inica Blue Flog Iris Peat Pot 2' o.c. High Marsh/Edge 9 e o - 25 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh a 5944 ~ e fi e° ° 0 9s1 ee~ I o°°°\ oao° 280 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh °°°°0/1/ °0peoooo°°a~(J°°°a » 415 Pontederia cordota Pickerel Weed Peat Pot 2' o.c. Low Marsh SCALE 1 =30 uart Cont. 2' o.c. Low Marsh A. BERG 27 0 6 45 Saururus cernuus Lizards Tall Q °0°00000oooooeo 07 4n I inustrum Japonica Liaustrum 1 Gal. Cont. 5' o.c. Perimeter Sheet No. No. Revision Date B Designer Scale REVIEW COMMENTS PER TOC 01/27/06 MS W&R 1" = 50' 1 1 st 2 2nd REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date HIGHCROFT VILLAGE SUBDIVISION WITHERS RAVENEL AWATER MANAGMENT BASING PLAN I ENGINEERS I PLANNERS I SURVEYORS 7A 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB MS 12/02 05 STORMWA' 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469.3340 fax: 919.467-6008 www.withersravenel.com 4 ToC 4th REVIEW COMMENTS 06/23/06 JAB Checked By lob No. WAKE COUNTY NORTH CAROLINA w&R 204191.0 CARY SITE DATA Nrs DEVELOPER: OWNER: WN R: WATERSHED PROTECTION PHASE 2B TRACT 1 TRACT2 Total 0 E THIS PROJECT MEETS THE TOWN OF CARY RESERVOIR ZONING HIGHCROFT VILLAGE PDD IMPACT PROPERTIES GROUP HIGHCR( HIGHCROFT INVESTORS LLC WATERSHED PROTECTION ORDINANCE (JORDAN LAKE OVERALL ACREAGE 11.11 25.36 36.47 140 TOWERVIEW COURT P.O. BO P.O. BOX. 3557 WATERSHED) AS A HIGH DENSITY USE WITH THE CARY, NORTH CAROLINA, 27513 CARP, ~ GENERAL NOTES TEL. 919 463-9940 FAX. 919 463-9983 EL. 9' CARP, NORTH CAROLINA, 27513 PROJECT IMPERVIOUS PERCENTAGE X38.8 R/W ACREAGE 1.11 4.60 5.71 1983 EL. 919 463-9940 FAX. 919 463-9983 ~ ) ~ ) ~ 1. ALL CONSTRUCTION MOST BE PERFORMED IN ACCORDANCE WITH THE CURRENT TOWN OF CARY STANDARD ATTN: COLEN DAVIDSON, JR. TTN: C ( ) ( ) PROPOSED NUMBER OF LOTS 13 89 102 TTN: COLEN DAVIDSON, JR. TRACT 1 -ESTIMATE 6,000sgft IMPERVIOUS SURFACE SPECIFICATIONS AND DETAILS. PER LOT ALLOWS FOR 50x60 BASE FOOTPRINT, PROPOSED DENSITY (DU/ NET ACRE} 1.7 1.8 1.6 2. WETLAND & STREAM BUFFER DELINEATION BY SOIL & ENVIRONMENTAL CONSULTANTS. STREAM BUFFERS 1,500 sgft. FOR WALKS & DRIVES AND ALLOWS MIN LoT slzE PROPOSED 12,050 5,211 F ARY RU & REGULATIONS. CONTACT/CONSULTANT: ARE BASED ON TOWN 0 C LES 1,500 sgft. FOR OVERRUNS & ADDITIONS. 3. BMP DEVICES SHALL BE UTILIZED FOR SEDIMENT CONTROL DURING THE INITIAL CONSTRUCTION OF THE PROJECT. WITHERS &RAVENEL, INC. AVERAGE LOT SIZE 16,700 6,282 ~ ON-SITE TOPOGRAPHIC INFORMATION BASED ON FIELD SURVEY BY WITHERS &RAVENEL, OFF-SITE TOPOGRAPHIC 111 MACKENAN DRIVE = 4 TOWN OF CARY TRACT 2 -ESTIMATE 4,200sgft IMPERVIOUS SURFACE STREETS LF 820 3,685 4,505 '3 INFORMATION BASED ON WAKE COUNTY GIS DATA. CARP, NORTH CAROLINA, 27511 PROJECT 05-SB-034 PER LOT ALLOWS FOR 45x55 BASE FOOTPRINT, SEWER FLOW 3 640 24 920 28 560 800 sgft. FOR WALKS & DRIVES AND ALLOWS I N URVEY BY WITHERS &RAVENEL INC. TEL. 919-469-3340 FAX. 919-467-6008 5. BOUNDARY INFORMATION S BASED 0 S , 18 925 sgft. FOR OVERRUNS & ADDITIONS. DENUDED ACRES 15.6 AC ° ATTN: JASON BERTONCINO, PE IMPERVIOUS SURFACE AREA -INFRASTRUCTURE (SF) 27,659 137,014 6. DRAINAGE AREA DELINEATION BASED ON TOPOGRAPHIC DATA 1MTH ADJUSTMENTS MADE FOR FUTURE LOT DRAINAGE ASSUMPTIONS AND FIELD OBSERVATIONS OF EXISTING CONDITIONS. WAKE COUNTY PIN NUMBER 0734-0 ~ 0734-02-76-0395 AVERAGE ALLOWABLE IMPERVIOUS AREA PER LOT (SF) 6,000 4,200 NOTE. 3 TRACT 1 & 2 ARE DIVIDED BY THE CENTERLINE OF THE STREAM ESTIMATED IMPERVIOUS SURFACE LOT AREA 78,000 373,800 LOCATED BETWEEN LOTS 27 THRU 34 AND LOTS 101, 112 AND 113 IMPERVIOUS SURFACE AREA 105,659 510 814 616 473 IMPERVIOUS SURFACE % 21.8% 46.2% 38.8% I 1 I I \ / 1 1 ~ / _ __i / \ / \ I \ ~_/i 1 \ - _ I / / II 1 I \ J 1\ l i/ 11 \ \ / \ I III / ~ 1 1 I 1 I \ \ \ ~ Il I I I I \ ~ 1 1 \ \ / \ ! 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I ' 11 i i ,l i i / 'l r r / i / l ~ / l ~ / / / / / 1 / 1 J~ i ~ / i i'/ % lr 1 / %l % i l I l / l I l 1 I j r t / / / l ~ J Il 1 , 1 l l / / rr! I vv / r ~ rr l l / , t I \ / , / / / / / / ! / ' / ~ r 11 ~ \ I / / r / l ~ ' I1 1 ~ r i IGU/STRU BMP'SC ,EEN 5 O.C. - - I , ~ , / r 1 \ ~ \ , l l r , / r\ I I l r l l • ,I ' / / , / r 3 - I / / / / , ~ I / / , rll~ \ I I r ~ / , / r 1 1 / I , , / / rr , i , I / , / / / / / / ' ~ l 1 I 1 / l 1 r I r i ~ ~ I I ~ I I ~ I i 1 I ' / i'' / I I r I r I I % I I / l r r - - e< / r , r r / / / / / / ~ r' ,i r/'/I i I j I I I I ~ ~ ~ i I , / 1 1 I I I I I I I ' ~ ~,i - it I I / I I 1 i i , ~ ' ' ' / III I I , I I I I I I , III 1 ..l - 1 , l I I I _ ' ~ I l '-'J . 1 / ~ I 1 / III ~ • . / / I 5 1 1 ~ ~ ~ I ~ 34 / r ~ I I I I f" ^ ' / ' ' / r' , / / / , , , , / / - ter' ~ / , , I,' ,r , , , / , , , / , / / r a / / , , ' / r ' r' 4~... / / ~ , / / r / ~ , , ~ - , , , , _ ~ , ..y...y...~ . I I I ' ../...,...f.. I I r 1 ~ \ j r / / ' , 111'/^J ' \ - / / / / , ~ lI / , N/ / , ~ / r' / r r / / , ' , 11 ~ i' -i , I 1 1l \ / ~ ~1 ~ ' I I I 1 / , , / / r / / / , r~ I 1~ 1~_~I / / / , !~i HIGH MARSH f 4,620 SF ~I~~jll I I ~ , \v A ' ~ 'r ~ HIGH MARSH f 1 960 SF ' ~ a, ~ \ 1 \ r , , , / / , ! 1 I LOW MARSH f 4,620 SF i- ~ - I \ \ \ 3 , / / / i ~ / ! 7 ~ r - - LOW MARSH f 1,960 SF r r r ~ 1 \ r r I \ \ \ \ , , , , , , /i / I \ \ ~ \ \t OPEN WATER t 3,960 SF r \ \ `1 , " / ; ; ; OPEN WATER t .1,680 SF r t / ~ I - \ \ \ ~ ' I r I - / / I '~yy / 1 t ..'.'L-.'.'.-.'. ' \ ~ ~ \ / \ / , ~ ' i I / / , / / ~ r / ~ t r ~ ` .I , ~ / / ~ ? 1 / ' ' / ' / / ' ~ ' ~ ' ~ % 1 ' , r / , , / 1 / ,r ~ / r , 1 / ~r I ~ ~ I ~ r \ \ , , r / / , I / / / DIME EL .1.....1..... • DIMENSIONS ELEV. ' \ ~ - .;-qq5 \ ~ w NORMAL POOL 13 200 SF 342.00 - J 1 ~ , ~ NORMAL POOL 5,600 SF 373.00 \ / ~ ~ ~ r / / \ " ..Il.....~`.....1 \ - ~ - TOP OF DAM WIDTH ' , . . \ ~ 8 345.00 ~ TOP OF DAM WIDTH 8 377.00 ; , / / ~ / , \ ~ X 5 -J ~ ~ ANTI-SEEP COLLAR 54" 4" / ANTI-SEEP COLLAR 48 x 48 , ; ; I , i \ ~ , , i - ~ ~ ~ ~ - - ~ -••i - - • 1-YEAR STORM ORIFICE 2.5 342.00 / ~ -YEARS 0 IFICE 1.25" 373.00 'I ' \ r' / / I _ 39 TOP OF ANTI-FLOATATION T x T x 2' 369.50 I / ( ~ / / ' \ ~ ' ~ ~ • ~ ~ ~ ~ ~ • ~ TOP OF ANTI-FLOATATION 8 x 8 x 2 339.00 \ ~ ' / ~ ' -355- ~ i , / ~ TOP OF RISER WEIR 4 x 4 BOX 375.00 / , , ,~~.3~~=_,~\ ; , = r ~ - - • • - • ~ ~ , • . • • TOP OF RISER WEIR 5 x 5 BOX 343.75 - / OUTLET PIPE INVERT IN 24" RCP 370.00 \ i ~ ' - ~ - • • ~ - - ~ ~ OUTLET PIPE INVERT IN ' - , / I / / i / i i i 9.00 , ' ~ _ _ _ OUTLET PIPE INVERT OUT 24" RCP 369.00 . ` 'j ~ ~ ~ ~ ~ ~ • • •.-y:~ : OUTLET PIPE INVERT OUT 30" RCP 338.00 i / , , ~ ; 'S ~ - , - PLANT LIST PLANT LIST QUA SPECIES COMMON NAME ROOT SPACING LOCATION _ QUA SPECIES COMMON NAME ROOT SPACING LOCAl10N 650 Iris virginica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge 270 Iris vir inica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge 9 90 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh ~ 45 Juncus biflorus Share Rush Quart Cont. 2' o.c. High Marsh 1,110 Sogittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh SCALE 1 =30 • 470 Sagittario latifdio Broadleaf Arrowhead Peat Pot 18 o.c. High Marsh SCALE 1 ~~=30' 1 665 Pontederia cordata Pickerel Weed P ' eat Pot 2 o.c. Low Marsh 570 Pontederio cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh _ 185 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh _ s- ~ 65 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 44 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter 1 al. Cont. 5' o.c. Perimeter 65 Ligustrum Japonica Ligustrum G / \ ~ \ , f 1~ \ 1 ~ 1 \ 1 / / / / 1 C r \ 1 1/l I / \ / 1 / ~ \ I 1 1 1 ` 1 ' ~ 1 II II / j /'i'. \ / \U\\ 1 1 1 l 1 11 p f / / cam/ , , , \ - 1 l 1 1 1 / 111 / / ' _ ~ ~ \ 1 1 1 1 1 I III / , - ~ ~ l 1 1 1 / ~ , ~~1 1 / \ / / / _ \ \ \ \ 1 \ \ I - / , \ ~ / / \ \ \ I , ~ \ ~ ~ \ III • `350 II ' ; ~ ~ ,I IM Ili r ~ r ~ f ~ 1 III ~ - , \ , I, HIGH MARSH f 1,155 SF r ~~r / r'~ ~ ~ t II / - , ,w LOW MARSH t 1,155 SF / / ` . ? ; OPEN WATER t 990 SF - - / / / , ' - / l I l / / / i ~ \ , s , , - DIMENSIONS ELEV. _ , ' I - I ! ~ ; ~ ; ~ NORMAL POOL 3,300 SF 343.00 ' 345- - ~ I ~ / / / ~ I ' ~ ~ F 10 347.00 / , / I , l TOP 0 DAM WIDTH -'----------.,1 ~ / / / / L' / ; ' /~6Q. ~ ~ ANTI-SEEP COLLAR 54" x 54" / / M ~a ~ 'S' ~ / / - 1" 343.0 - _ LIGU~TR(J ,F~ C~ _ 1 YEAR STORM ORIFICE 0 % / ~ ~ / ~ TOP OF ANTI-FLOATATION 7 x 7 x 2 340.00 ° ~ ' ~ ~ / _ TOP OF RISER WEIR 4 x 4 BOX 344.50 ' - ; ~ ~ ; ' ~ OUTLET PIPE INVERT IN 24" RCP 339.50 Z ' - / ° 0 TLET PIP N RT OUT 24" RCP 338.00 ~ U E I VE W m 0oooooeoooaoooo ry i~ ~ a0°ooo.~N CA~TQ o0omo0 o PLANT UST 't O~opepeo peopoo~~ 00 ~ QUA SPECIES COMMON NAME ROOT SPACING LOCATION I i ~ ° o Q` ~A e/~ o m 160 Iris virginica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge S o e - ~1 ~~'~U p o a 8 - 25 Juncus biflorus Shore Rush Quart Cont. 2' o.c. Hi h Marsh N g o e 280 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh a 25944 e _ ~~~~r ea o a ~ » > 415 Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh SCALE 1 =30 tr o~ i ae ~ o °~,e ~N °"eoaeooeoe Go°°° ~ 45 Saururus cernuus Lizard's Toil Quart Cont. 2' o.c. Low Marsh 0 ~0 A. BED ,0• Q.6 .e ~ ~ oooooeooaoo 40 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter 0 V! D st REVIEW COMMENTS PER TOC 01/27/06 MS W&R 1 = 50 WITHERS RAVENEL Sheet No. Lr22nd Revision Date B Designer Scale n 0 REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date HIGHCROFT VILLAGE SUBDIVISION ToC 3rd REVIEW COMMENTS 051206 JAB MS 12 02 05 STORMWA ToC 4th REVIEW COMMENTS 106/23/06 JAB Checked By Job No. OWATER MANAGMENT BASING PLAN ENGINEERS I PLANNERS I SURVEYORS 7A W&R 204191.0 GARY WAKE COUNTY NORTH CAROLINA o 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 fax: 919467.6008 www.withersravenel.com i Y 0 Z 0 0 sr W m #4 REBAR 12" 0. C. EACH WAY ELEVA TION 2000 PSF MIN. BEARING CAPACITY BENEATH COLLAR 1/2" PREFORMED JOINT p"n LER, 12" WIDE SECTION SEE SHEET 7A FOR SIZING DATA TYPICAL ANTI -SEEP COLLAR NTS STANDARD 2' X 2' GRATE AND FRAME PER NCDOT 830.16 CENTERED OVER STEPS AND DRAWDOWN VALVE 6" PRECAST CONCRETE SLAB PRECAST REINFORCED BOX TYPICAL TRASH RACK VENT NOTE: SKIMMER MAY VARY SLIGHTLY FROM ILLUSTRATION OUTLET END; CONNECTION TO OUTLET PIPE OR RISER NTS SCREEN ACCESSIBLE THROUGH DOOR FLOAT BARREL PIPE LONGER THAN SHOWN NOT INCLUDED WITH SKIMMER SUPPLIED BY USER FLEXIBLE JOINT (NOT TO EXCEED 3' IN LENGTH) TEMPORARY SEDIMENT DEVICE DEWATERING SKIMMER DETAIL Nis USE 2.5" SKIMMER W/ 2" HEAD (TYP.) No. Revision Date B 1 1st. REVIEW COMMENTS PER TOC 01/27/06 MS 2 2nd. REVIEW COMMENTS PER TOC 03/10/06 MS 3 ToC 3rd REVIEW COMMENTS 05/12/0 JAB Designer W&R Scale 1' 50' Drawn By Date MS 112102/05 Checked By Job No. JBC 204191.0 CONSERVATION POOL Far r minim -r.Tn POND BOTTOM NOTES 4ZVIAAAA�D 4' DIP VENT & CLEANOUT PIPE 4" CAP WITH DRILLED ORIFICE (SEE TABLE SHEET 7A FOR SIZE) -' PLACE STEM SUPPORTS AT 3' FROM BASE ATTACH SKIMMER FOR EROSION CONTROL PHASE OF PROJECT DRAW DOWN OUTLET 114 4" NRS GATE VALVE I\%JF VV I LG 1 f IrG CROSS SECTION CONCRETE PRECAST BOX JOINTS SHALL BE MECHANICALLY FASTENED WITH 1/4" x 2" STEEL STRAPS BOLTED WITH 3/4" BOLTS GROUT EACH SIDE RISER & DRAWDOWN DEVICE DETAIL NTS (1) RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED AT PRIOR TO THE BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT CONTROL DEVICE DURING ROADWAY AND UTILITY CONSTRUCTION. ONCE THE SITE HAS BEEN STABILIZE AND GRADING IS COMPLETED THE BASIN SHALL BE CLEANED OUT AND STABILIZED. THE SKIMMER DEVICE SHALL BE REMOVED, THE BOTTOM DRAIN CLOSED AND THE NORMAL POOL ESTABLISHED. (2) FINAL SEEDING OF ALL AREAS WITHIN TWO FEET OF ELEVATION ABOVE THE NORMAL POOL SHALL BE A MIXTURE OF PANICUM CLANDESTINUM (DEER TONGUE) AND PENNISETUM GLAUCUM (PEARL MILLET). SEEDING RATES SHALL BE AS RECOMMENDED BY THE SUPPLIER. (3) ALL BMP DEVICES SHALL BE SCREEN FROM OFFSITE, INCLUDING ON—SITE LOT, VIEWS WITH AN EVERGREEN SHURB SCREEN AS REQUIRED BY THE TOWN OF CARY. N TS. CONSTRUCTION SEQUENCE 1. INSTALL EXISTING POND OUTLET PIPE. 2. INSTALL SILT & TREE PROTECTION FENCE AT TOE OF FUTURE BMP DAM. 3. INSTALL BMP RISER AND DOWNHILL SLOPE. 4. STABILIZE BMP DAM SLOPES WITH SEED & MULCH. 5. CONTACT TOWN OF CARY EROSION CONTROL OFFICER FOR REVIEW. 6. BEGIN ROADWAY AND DAM REHABILITATION SLOPE GRADING. 7. MAINTAIN AS MUCH DRAINAGE AS POSSIBLE INTO BASIN. 8. ONCE SUFFICIENT AREA IS STABILIZED AND THE TOWN EROSION CONTROL OFFICER ALLOWS THE REMOVAL OF THE SEDIMENT CONTROL DEVICE COMPLETE INSTALLATION OF THE PERMANENT STRUCTURE. 9. CALL ENGINEER FOR FINAL INSPECTION. HIGHCROFT VILLAGE SUBDIVISION ISTORMWATER MANAGMENT BASING DETAIL CARY WAKE COUNTY NORTH CAROLINA WITHERS & RAVEN EL ENGINEERS 1 PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com Sheet No. 7B i 4 REBAR 12" SKIMMER ACH WAY SKIMN O. C. E 1/2 PREFORMED JOIN T RISER FILLER, 12" WIDE WATER LEVEL DURING STOR TURING STORM 1 MIN. FREEBOARD TOP OF DAM , :'r,. TRASH HOOD - - EMERGENCY SPILLWAY ELEV. ~ - - - PEAK FLOW ATTENUATION POOL _ - ~i= _ - -~I - - - _I ~ _ - - i- ~ - - - ~ T" ~ MINIMUM SLOPE 3 . 1 ~ 1= _ _-I I I~~ - 12' I - - - - - - _ . ~ • , i- _ = EARTH DAM ELEVATION SECTION - - • ••a . • - ~ I I-_- - - I - - - - - - - - - I-I ~ - - - - DISSIPATOR PAD - - - - - - - RIP RAP 2000 PSF MIN. ANTI-FLOATATION DEVICE - _ _ - I ~ I ~ ~ _ - SEE SHEET 7A FOR SIZING DATA BEARING CAPACITY BENEATH COLLAR _ -I-=- -i-I I _ - ANTI-SEEP COLLAR _ - _ -III_ - - - - NTS - ~ _ -I I - - - - ~ i-iii-i i RCP OUTLET PIPE N TS. STANDARD 2' X 2' GRATE AND FRAME PER NCDOT 830.16 CENTERED OVER STEPS AND DRAWDOWN VALVE 4" DIP VENT & CLEANOUT PIPE _ da ,.:d; G ; VOID SP VOID SPACE CONCRETE PRECAST BOX CONSERVATION POOL JOINTS SHALL BE MECHANICALLY ~ FASTENED WITH 1/4" x 2° STEEL STRAPS BOLTED WITH 3/4" BOLTS 6" PRECAST CONCRETE SLAB 4"x4" TEE VOID SPACE NORMAL POOL ~ ~ r GROUT EACH SIDE ':!=w PRECAST REINFORCED BOX ~'S 4~ CAP WITH DRILLED ORIFlCE ~ (SEE TABLE SHEET 7A FOR SIZE) PLACE STEM SUPPORTS I~-~I A T 3' FROM BASE ~ '0-RING' GASKETED CLASS III RCP ATTACH SKIMMER FOR EROSION CONTROL PHASE OF PROJECT ~y POND 80TTOM DRAW DOWN OUTLET NTS ~ \ i\ PAVED ~ PAVED INVERT ° / / ,,r:,,. GROUT 6 D ~ ~ o i ' i ~ : ..e . • • ~ • p,~G s ,n / e ~ •a e • a a f. d 4. • 1 4" NRS GATE VALVE SCREEN ACCESSIBLE VENT THROUGH DOOR RISER BC I MISER Bc DRAWDOWN DEVICE DETAIL I NTS NOTE: SKIMMER MAY VARY i SLIGHTLY FROM ILLUSTRATION I FLOAT (1) RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED AT PRIOR TO THE 1. INSTALL EXISTING POND OUTLET PIPE. HE BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT 2. INSTALL SILT & TREE PROTECTION FENCE AT TOE OF FUTURE BMP DAM. OUTLET END; CONNECTION CONTROL DEVICE DURING ROADWAY AND UTILITY CONSTRUCTION. ONCE THE SITE HAS 3. INSTALL BMP RISER AND DOWNHILL SLOPE. HAS TO OUTLET PIPE OR RISER BEEN STABILIZE AND GRADING IS COMPLETED THE BASIN SHALL BE CLEANED OUT 4. STABILIZE BMP DAM SLOPES WITH SEED & MULCH. UT BARREL PIPE LONGER THAN SHOWN TABILIZED. THE SKIMMER DEVICE SHALL BE REMOVED, THE BOTTOM DRAIN AND S 5. CONTACT TOWN OF CARY EROSION CONTROL OFFICER FOR REVIEW. IN NOT INCLUDED WITH SKIMMER 6. BEGIN ROADWAY AND DAM REHABILITATION SLOPE GRADING. SUPPLIED BY USER CLOSED AND THE NORMAL POOL ESTABLISHED. 7. MAINTAIN AS MUCH DRAINAGE AS POSSIBLE INTO BASIN. °°°0p0ooooaooooe°p00° MAL POOL •~t1 CpRO (2) FINAL SEEDING OF ALL AREAS WITHIN TWO FEET OF ELEVATION ABOVE THE NORMAL POOL 8. ONCE SUFFICIENT AREA IS STABILIZED AND THE TOWN EROSION CONTROL pE~°,°°°°°°°Po,~i ETUM GLAUCUM ESSI ° ti FLEXIBLE JOINT NOT TO EXCEED 3' IN LENGTH) SHALL BE A MIXTURE OF PANICUM CLANDESTINUM (DEER TONGUE) AND PENNISETUM GLAUCI ( OFFCER ALLOWS THE REMOVAL OF THE SEDIMENT CONTROL DEVICE pF 0 0 (PEARL MILLET). SEEDING RATES SHALL BE AS RECOMMENDED BY THE SUPPLIER. COMPLETE INSTALLATION OF THE PERMANENT STRUCTURE. a Q~ o e ° SEAL ° • 9. CALL ENGINEER FOR FINAL INSPECTION. ° ° a 25944 ° a °o . IEWS WITH v o SEDIMENT DEVICE DEWATERING SKIMMER DETAIL EVICES SHALL BE SCREEN FROM OFFSITE, INCLUDING ON-SITE LOT, VIEWS WITH TEMPORARY (3) ALL BMP D ° ° ° 9s° I ° o° ° ~ AN EVERGREEN SHURB SCREEN AS REQUIRED BY THE TOWN OF CARY. N USE 2.5" SKIMMER W/ 2" HEAD (TYP.) A. BERG 7 D,6 °0p00 000°0 6 1 Z eauo 0 N I O % No. Revision Date B Designer Scale „ Sheet No, 1 1st. REVIEW COMMENTS PER TOC 01/27/06 MS WAR 1 = 50 WITHERS RAVENEL VATER MANAGMENT BASING DETAIL ENGINEERS I PLANNERS I SURVEYORS 7B i 2 2nd. REVIEW COMMENTS PER TOC 03/10/0 6 MS Drawn By Date o HIGHCROFT VILLAGE SUBDIVISION STORMWATE 3 ToC 3rd REVIEW COMMENTS 05/12/0 6 JAB MS 12/02/05 Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919.467-6008 www.withersravenel.com WAKE COUNTY NORTH CAROLINA t JBC 204191.0 CARP 0 Y - , / , I I I I / ~ ~ 1 QQ , , I I I I I ~ r , , ~ / I I ~ 1 , , ~ I I I ~ I 1, I / / ( I 1 , _ _ ~ I I / I I f , 1 ' /l ii / ~ ~ l / / / I t ~ I I / l ~ ~1 / _ L~~TRUM B~If'" SCREEN, ~6C. ~ l I ~ / r I r l 1 I / l l , ' / l l Q , I ! I ~ r--- I ~ / , ~ , , 1 , ~ , I I I ! I , ! , , / l I l / , I 1 1 , , I l / l / , , I / r / / r ! / ! ~ , , / ! / / / / l / l / / , / I ~ l~/ l l J 1 l / / Cj , / / , / _ / / I / l l l l l l / ~ r 1/ l I l ! l ~ l l ~ / l ' j ~ / 11 I v / I l / ! I r I ~ / _ / / / ! II , IGUSTRUi~ BMP/SC EEN 5 O.C. , I I ' , / / , / / ~ ~ / / J / / , / / / ,r !I 1\ ~ ~ t c r / / ~ / / / / / / , ~ r r`1~1 I r r / ~ l r , / / , / , _ ~ i / / / ..I I / / / / / i' / I / / r / X 1 1 I l ' / ~ ~ r r l / , / I~ / I , / ! r l I , r/ / I I ~ I I ! ~ I 1 I I I I I 1 - / ~ / I I I 1 I I I I _ I 1 I r / ~ _ J I l ~ r r r/\ I I \ ! \ I I I ~ / / I I / / , , , , ,G 'i , , , , / , _ - / ~/n / , , , ~ ' I 1 / ! ~ I I I ! ~ ~ III ' I I I i%' I / 1 - , V ' / / , ~ , , !y~ I. , , , , / , I II I I .'.'A'. / I I I I I r III 1 ' .:'J / / / ~ I I I / , ~ , , / ~\~Y , , / I I 1 / / I I 1 ~ . ~ ~ / I . I ~ I I I , . 1 y..~:.. r r, 9 I J Cyr.. y. '.'.'l.'.'.' i..' l / ! I I I I I , / / , I I / ~ ~ ~ , r , / / , , r l/l,- ~ ~ - , ,r , , , / i r' ' , lIl~ - / , r , ' , , ' / , r ,i ,r , / r \ Ill , ! ~ - , , 1\ HIGH MARSH f 4,620 SF Illll , , 1 \ ~I / \ / , , r r , , / / l ,/I / , / / /,r I l - r / HIGH MARSH f 1,960 SF ~ ~ ~ - I 1 LOW MARSH t 4,620 SF V ' r' ~ r'' ~ r ll I l 3 , \ I i ` \ \ ~ \ / LOW MARSH f 1,960 SF L ,r , ~ I'.. ~ l /l OPEN WATER f 3,960 SF ! \ / ' ' i / , r 11;x' I ! \ \ \ ~ ~ - OPEN WATER f 1,680 SF I ! I .I.. \ \ ~ ' / / 1 ~ , / , r I I 1 , - - ' \ / , I , I I ::•t.:•..:•. ~ / ~ Cy , / . , I 1 / ~ .....I... , ,r / , , , I I , i / / , / f l .I. _ - \ 1 ~ \ , , I / i / / / / ' / ' ~ 1 / • DIMENSIONS ' - ~ ~ _ _ DIMENSIONS ELEV. I - , LL ~ - ' - - ~0~ . ~:~•1• ••::.'.:....a \ ~ NORMAL POOL 13,200 SF 342.00 , ~ ' ~ , / NORMAL POOL 5,500 SF 373.00 , \ / , , ' \ \ / / ' ~ , , r \ :1.~'::•.~:::::+:::•.:•.•:.::::::.::::.• . ~ F M WIDTH 8~ 345.00 \ \ - ~ - TOP 0 DA ' 8 376.00 / ~ _ TOP OF DAM WIDTH / / . - r y ' ~ ~ ANTI-SEEP COLLAR 48 x 48 ; , I , I _ / , . 'ANTI-SEEP COLLAR 54" x 54' \ ~ n ' ~ ~ - _ - 373.00 'I 'I~' 11 ' , - , _ - _ _ 1 YEAR STORM ORIFICE 2 1 , - " " ' 1-YEAR STORM ORIFICE 2.5 342.00 ` \ - ~ i'ii' / , . ~ _ 39 ANTI- LOATATION T x T x 2' 369.50 I 11 s'~ / ( , / TOP OF F , / I , ~ = ~ % - • - • TOP OF ANTI-FLOATATION 8' x 8' x 2' 339.00 / ~ TOP OF RISER WEIR 4 x 4 BOX 374.50 , . ~ ~ - -D9`i-- ~ ' ' ~ • ~ ~ ' ' TOP OF RISER WEIR 5 x 5 BOX 343.75 ' OUTLET PIPE INVERT IN 24" RCP 370.00 \ i _ ~ _ - / - I OUTLET PIPE INVERT IN 30 RCP 339.00 ~ ~ ~ _ _ _ OUTLET PIPE INVERT OUT 24 RCP 369.00 ~ ~ ; ~ ~ ~ ~ OUTLET PIPE INVERT OUT 30" RCP 338.00 r ~ \ , ! , _ /~~j r PLANT LIST PLANT LIST QUA SPECIES COMMON NAME ROOT SPACING LOCATION QUA SPECIES COMMON NAME ROOT SPACING LOCATION 650 Iris vir inica Blue Fla Iris Peat Pot 2' o.c. High Marsh/Edge 9 9 270 Iris virginica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge 90 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh » 45 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh 1,110 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh SCALE 1 =3D • 470 Sogittorio lotifolio Broadleaf Arrowhead Peat Pot 18 o.c. High Marsh SCALE 1 "=30' 1,665 Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh 570 Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh 185 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh f 65 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 44 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter 65 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter / , / ~ \ , , 1 \ w / \ 1 1 1 ~ I 1 1 I ! ' / /J r Q~ \ \ 1 1 \ \ 1 1 1 1 / \ \ / ~ , _ / \ \ \ \ I I i 1 ( / \ /I I ~ 1 _ _ \ - \ \ 1 II" l,' /'i'ce r / - 11 11 1 11 Il 1 / 111 I " r , i ~ - \ 1 1 1 1 I 111 / , , - `~1~ ` l 1 l 1 , , \ ~,'I 11 III/ ,,r,r ~ Y ~ \ \1.\\\~lS Il 11 11 III I I , , ,'r' r / / ~ ~ `~1 1\ \ \ l III ! 1 , , , r , / \ ~ SlJn 1\ . 11 I 1 / \ / / / / ~ 11\ \ 1 1 \ \ I ~ ~ ! ! ~~a ~ ~i/ 111 \ \ III \ / C / \ 1 I - IJ \ / / \ / ~ / / c 1 - ~ , , \ \ \ \ 1\ \ 1 / \ \ . II / ! \ III I ' \`-350 \ I,I I ~ , ~ \ ~ ,~11 III r / / •'F / , JII ~ ~ - \ \ , II HIGH MARSH f 1,155 SF I / / r' , \ \ \ 1 I I - . \ \ LOW MARSH f 1,155 SF D ~ / ` OPEN WATER t 990 SF -a \ p~N~ • w,a1"~k 4~tgi.lrr WETtAN03AND 9TORMMWTEAlyAANGfi , , 3 ~ ' Ss\ \ DIMENSIONS ELEV. I ' NORMAL POOL 3,300 SF 343.00 I ' / I ~ TOP OF DAM WIDTH 10 347.00 , / / , / / / / i ~ _ >l ~ L ~ ~ O9~ ~ ANTI-SEEP COLLAR 54 x 54 I TR(J M S~~ ~~N'5' O.C' / 1-YEAR STORM ORIFICE 1.25" 343.00 ' / , ~ , / TOP OF ANTI-FLOATATION 7 x 7 x 2 340.00 - " ~ / _ _ TOP OF RISER -WEIR 4 x 4 BOX 343.50 ~ OUTLET PIPE INVERT IN 24" RCP 339.50 / / , IPE OUT 24" RCP 338.00 OUTLET P INVERT ooepeooooooeo°ooo°°0 PLANT LIST o~° ~N CARS 0 0~ ,~°oa.e, ~i ° QUA SPECIES COMMON NAME ROOT SPACING LOCATION e~,o°°FESSI°° o, 8~0 160 Iris virginica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge e eQ 25 Juncus biflorus Shore Rush Quart Cont. 2' o.c. Hi h Marsh 9 SEA a e o 0 5944 e g 280 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18» o.c. High Marsh V o °Q ~ » > 415 Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh °o9iS~ °e r~l oo o fop°0/`/~0pooooa°oof~ ep04 SCALE 1 =30 r r 45 Saururus cernuus Llzard s Tall Quart Cont. 2 o.c. Low Marsh °00° q' BE~ o-o°e z7 06 40 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter °0p0°eo°ooeooo° 07 I I I ~ I I ~ No. Revision Date B Designer Scale n 1 1st REVIEW COMMENTS PER TOC 01/27/06 MS W&R 1 = 50 2 2nd REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date HIGHCROFT VILLAGE SUBDIVISION STORMWA- WITHERS RAVENEL Sheet Na. 3 ToC 3rd REVIEW COMMENTS 05 12/06 JAB MS 12/02/05 4WATER MANAGMENT BASING PLAN I ENGINEERS I PLANNERS I SURVEYORS 7A 4 ToC 4th REVIEW COMMENTS 06/23/06 JAB Checked By job No. CARY WAKE COUNTY NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com W&R 204191.0 _ _ SITE DATA Hts DEVELOPER: OWNEI vr~F OWNER: WATERSHED PROTECTION PHASE 26 TRACT 1 TRACT2 Total V~J` THIS PROJECT MEETS THE TOWN OF CARY RESERVOIR ZONING HIGHCROFT VILLAGE PDD IMPACT PROPERTIES GROUP HIGHCf HIGHCROFT INVESTORS LLC WATERSHED PROTECTION ORDINANCE (JORDAN LAKE ovERALL ACREAGE 11.11 25.36 3x.47 140 TOWERVIEW COURT P.O. B P.O. BOX. 3557 WATERSHED) AS A HIGH DENSITY USE WITH THE CARY, NORTH CAROLINA, 27513 CARY, GENERAL NOTES TEL. 919 463-9940 FAX. 919 463-9983 EL. ! CARY, NORTH CAROLINA, 27513 PROJECT IMP RVIOUS PERCENTAGE 138.8 R/W ACREAGE 1.11 4.so 5.71 E ~ ) ~ ) t -9983 EL. (919) 463-9940 FAX. (919) 463-9983 1. ALL CONSTRUCTION MOST BE PERFORMED IN ACCORDANCE WITH THE CURRENT TOWN OF CARY STANDARD ATTN: COLEN DAVIDSON, JR. TTN: SPECIRCATIONS AND DETAILS. TTN: COLEN DAVIDSON JR. TRACT 1 -ESTIMATE 6 OOOs ft IMPERVIOUS SURFACE PROPOSED NUMBER OF LOTS 13 89 102 q PER LOT ALLOWS FOR 50x60 BASE FOOTPRINT, PROPOSED DENSITY (DU/ NET ACRE) 1.7 1.8 t.s 2. WETLAND & STREAM BUFFER DELINEATION BY SOIL & ENVIRONMENTAL CONSULTANTS. STREAM BUFFERS 1,500 sgft. FOR WALKS & DRIVES AND ALLOWS MIN LoT slzE PROPOSED 12,050 5,21t CONTACT/CONSULTANT: ARE BASED ON TOWN OF CARY RULES & REGULATIONS. 1,500 sgft. FOR OVERRUNS & ADDITIONS. 3. BMP DEVICES SHALL BE UTILIZED FOR SEDIMENT CONTROL DURING THE INITIAL CONSTRUC110N OF THE PRO~CT. WITHERS &RAVENEL, INC. AVERAGE LOT SIZE 16,700 6,282 & - M A N FIELD SURVEY BY WITHERS &RAVENEL OFF-SITE TOPOGRAPHIC 111 MACKENAN DRIVE 4. ON SITE TOPOGRAPHIC INFOR ATION B SED 0 TOWN OF CARY TRACT 2 -ESTIMATE 4,200sgft IMPERVIOUS SURFACE STREETS LF a2o 3 685 4 505 "N INFORMATION BASED ON WAKE COUNTY GIS DATA. CARY, NORTH CAROLINA, 27511 PROJECT # 05-SB-034 PER LOT ALLOWS FOR 45x55 BASE FOOTPRINT, ' 800 sgft. FOR WALKS & DRIVES AND ALLOWS SEWER FLOW 3,640 24,s2o 26,5so TEL. 919-469-3340 FAX. 919-467-6008 )08 925 sgft. FOR OVERRUNS & ADDI110NS. DENUDED ACRES 15.s Ac s 5. BOUNDARY INFORMATION IS BASED ON SURVEY BY WITHERS &RAVENEL, INC. ATTN: JASON BERTONCINO, PE 6. DRAINAGE AREA DEIJNEATION BASED ON TOPOGRAPHIC DATA WITH ADJUSTMENTS MADE FOR FUTURE LOT DRAINAGE ASSUMPTIONS AND FIELD OBSERVATIONS OF EXISTING CONDITIONS. IMPERVIOUS SURFACE AREA -INFRASTRUCTURE (SF) 27,659 137,014 WAKE COUNTY PIN NUMBER 0734- ER 0734-02-76-0395 AVERAGE ALLOWABLE IMPERVIOUS AREA PER LOT (SF) 6,000 4,200 NOTE: TRACT 1 & 2 ARE DIVIDED BY THE CENTERLINE OF THE STREAM ESTIMATED IMPERVIOUS SURFACE LOT AREA 78,000 373,800 3 LOCATED BETWEEN LOTS 27 THRU 34 AND LOTS 101, 112 AND 113 IMPERVIOUS SURFACE AREA 105,659 510,814 616,473 IMPERVIOUS SURFACE ~ 21.8% 46.2% 38.8% ~ I ~ ( I \ / \ 1 I \ i l ~ I \ ' / / 1 I I I ( / \ / - ~ \ _ - II / ~1- ~ III II I \ \ / ~l I I I I I \ / I~ \I \ \ \ I \ 1 1 _ _ ~J ~ ~ I II v ll I A v/ I v I vvv v vv I / I I I I 1 1~ I v vv l /I/ ~ \ \ \ \ \ 1 I 1 - V I 1 11 1 ~ / I 1 ~ \ vv - vv / //I l~ ,v ~ I v v v I I ~ ~v ~ ~i v v II ~ I/I I II I / 1 l ~ \ / l I! 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' III 1 , / I l ' I ` I I I / ~ / / / ~7v r ' / III 1 / / I ~ III I ; ' ! 1 / / I `I i , / l , / / , / / / , / , ' / ~ X34 v ~ ! / ~ I~ II I ~ / y. f... . . r r I I I / / ~/T'/^''~L / ~ r r I i ! , 1 ~ / / / ~ / , ~ , ~---I I I I I I / , , / , '0'L / , - - ~ / / . y... y... ~ I I 1 I I / / / r , / , , , Il///,~,( / ~ , / , , ,r / / / / , 1q 111 1~_ , - ~ , , ' / - HIGH MARSH f 4,620 SF 1 - 'I~~III - I AV v ' , ' / HIGH MARSH t 1,960 SF ,,'j/ ' ~ ~ / / ~ / - I I LOW MARSH f 4,620 SF / / , , , , , / , ~ , I / ,3 \ / r / r \ \ \ F \ , - LOW MARSH f 1,960 SF r r N WATER f 3 960 S OPE , \ ` \ r ~ \ \ \1 / , / , , / , "1i / / 1 L ' / ' 1, I ! 1 1 \ r -.ti \ ' ' / . ; OPEN WATER t 1,680 SF r I , \ ~ / ~ / I 1 / , ~ i / / r r / ~ ~ ~ ~ I 1 / I 1 ' i .•....I. ~ ~ 6 / , , / ~ r / , 1 I ' , / ~ / / ~ ' 1 I 1 , ~ , 1 / , , , , , , , , 1 / / / / ::::.1.... ' ! . ~ DIMENSIONS ELEV. ' / - , ' ~ DIMENSIONS ELEV. 1 \ ' ~ - _ .~.'.',•.'.'.'.'t.......•.' 42.00 ~ - - ,~05 \ NORMAL POOL 13,200 SF 3 , , / , , ' NORMAL POOL 5,500 SF 373.00 ' ~ . TOP OF DAM WIDTH 8 345,00 CO , / ~ - , " F DAM WIDTH 8' 376.00 i , ~ • ~ ~ • • • • • . , • , , • • ~ ~ ~ ' ~ ' ANTI SEEP COLLAR 54 x TOP 0 / / / n n \ 1 / / , , , , , / / / ) / I r , / ANTI-SEEP COLLAR 48 x 48 , . , 1 1 _ _ j ~ 1-YEAR STORM ORIFICE 2.5 342.00 , / / / » 11 I1 ~ ~ / _ 1-YEAR STORM ORIFICE 2 373.00 ,,r; 11 ~ , ' TOP OF ANTI-FLOATATION 8 x 8 x 2 339.00 ~ , , / , / ~ JJ TOP OF ANTI-FLOATATION 7 x 7 x 2 369.50 , ~y iii'-"\-__--~ \ y / ' / ' , II ~ > ,,l ~ / / ~ - -5~~- . ~ • ' • • • ~ • ~ TOP OF RISER WEIR 5 x 5 BOX 343.75 ~ w~ ~ 'BOX 374.50 / ~ 1 ~ , ~ I TOP OF RISER WEIR 4 x 4 ; 1 , ~ . 39.00 / ' - , . _ OUTLET PIPE INVERT IN 30 RCP 3 / , , . , Gi / ' / n I ~ ' OUTLET PIPE INVERT IN 24 RCP 370.00 ~ I , / ; / / / = ~ • OUTLET PIPE INVERT OUT 30 RCP 338.00 , , , , / V n , r,~/ / / ~ _ _ _ OUTLET PIPE INVERT OUT 24 RCP 369.00 , 0~, j , i / / / / / ~ / , , / / / / , / / I \ \ / / PLANT LIST PLANT LIST A SPECIES COMMON NAME ROOT SPACING LOCATION OU Blue Fla Iris Peat Pot 2' o.c. High Marsh/Edge 650 Iris vlrgmlca g QUA SPECIES COMMON NAME ROOT SPACING LOCATION 90 Juncus biflorus Shore Rush Quart Cont. 2 o.c. High Marsh 270 Iris vir inica Blue Flag Iris Peat Pot 2' o.c. High Marsh Edge 9 , 1,110 Sa ittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh » 45 Juncus biflorus Shore Rush Quart Cont. 2 o.c. High Marsh SCALE 1 =30 Peat Pot 18" o.c. Hi h Marsh » 9 SCALE 1 =30 1,665 Pontederia cordata Pickerel Weed Peat Pot 2 o.c. Low Marsh 470 Sagittaria Iatlfolla Broadleaf Arrowhead 9 195 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh 570 44 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o,c. Perimeter ? 65 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 65 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter \ / / ill ,I \ ~ / , I \ I l 1 / /r /s- - / \ / \ 1 r \ 1 1 1 1 1 , / \ , \ \ \ 1 ~ ~ 1 1 / l Y \ - / / / / \ 1 / \ j `ate \ I 1 1 1 I I 1 d \ ~ ~ \ 1 1 1 O ` 1 V~1 , , , ~ ~ 1 1 1 1 III / , , . ~ \ ~ 1 + 1 I ,'III I I / , , / , C Y \ > \~~1 ' \\\l~ 1 1 1 I 1 I III , , / , / / / \ ~ SlJn 11 . \ I 1 \ rl1 \ ~ \ 1 \ \ \ , / - ~ ~ 1\ I\ 1 \ \ \ ~ \ I - 111 \ , ~ ~ \ 1`\ \ 11 i ~ ~ , ~ \ / / / \ ~ \ ~ / , , . \ ~ III II / /,r i i / - `350 I ~I r ,J ~ " ~ f ~ 1 HIGH MARSH f 1,155 SF , r i \ ~ . 1 II 'r ~ ~ LOW MARSH t 1,155 SF r , / ! , , \ I / / t ~l , / ~ v .~w~ / ~ , OPEN WATER f 990 SF / 9 r ' I Ss DIMENSIONS ELEV. , , , / I , , ' , NORMAL POOL 3,300 SF 343.00 I r , ' ' ~ V ~ I / ~ / / ' A ~ ~ I ! ~ TOP OF DAM WIDTH 10' 347.00 'I O / / ; p9~ ~ ANTI-SEEP COLLAR 54 x 54 , / / ~ / , ~ \ n LIGUSTR(1 M S~~ ~I~'5 O.C,.' ~ / 1-YEAR STORM ORIFICE 1.25 343.00 - ~ ~ , , ~ 1 , ~ r f , ~ , / ; / TOP OF ANTI-FLOATATION 7 x 7 x 2 340.00 / / ~ / / / / ~ , / , \ r r q~ - ~ ~ ~ 4 x 4 BOX 343.50 , ~ 1, ~ ~ _ TOP OF RISER WEIR ~N ~ ~~D / , ' OUTLET PIPE INVERT IN 24 RCP 339.50 / / ~v~ 6 OUTLET PIPE INVERT OUT 24" RCP 338.00 N ~uq~ ' °ooooeeeeoooo°o ~q ry e•`0 '(N CARP o~°°,°.°°.°°°°~i PLANT LIST ~ HESS! ° ° ~~0 ,Q ° o QUA SPECIES COMMON NAME ~ ROOT SPACING LOCATION SEA ° e 160 Iris vir inica Blue Flag Iris Peat Pot 2' o.c. High Marsh/Edge 9 ° 5944 a a 25 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh v: ~ °p ° 280 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh °o9J'~°°•~ I N~`s°°~ ~ °o~ °°°0 ~/'/°00°sooeo°°e~v(1°°oe > 415 Pontederia cordato Pickerel Weed Peat Pot 2' o.c. Low Marsh SCALE 1 =30 ~ 2' o.c. Low Marsh A. BER~V,•°°° 27 06 °0jeeoooeooee0° 07 45 Saururus cernuus Llzard s Tall Quart Cont 40 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter i Sheet No. No. Revision Date B Designer Scale WITHERS RAVENEL \ ENGINEERS I PLANNERS I SURVEYORS 7A REVIEW COMMENTS PER TOC O1/27/ 06 MS W&R 1" = 50' 1 1st 2 2nd REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date HIGHCROFT VILLAGE SUBDIVISION 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB MS 12/02/05 STORMW, 4 ToC 4th REVIEW COMMENTS 06/23/06 JAB III Checked By job No. AROLI NA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com -111 1 WAKE COUNTY NORTH C W&R 204191.0 CARY 4 REBAR 12" SKIMMER 0. C. EACH WAY 1 2" PREFORMED JOIN T RISER FILLER, 12" WIDE WATER LEVEL DURIN , LEVEL DURING STORM 1' MIN. FREEBOARD TOP OF DAM " ''r;. TRASH HOOD - - EMERGENCY SPILLWAY ELEV. - _ - II = - _ _ PEAK FLOW ATTENUATION POOL . f _ - - - - i -1~= _ - - - ~ t ~ . - ~ = i ~ MINIMUM SLOPE 3 . 1 i 1= _ _ - -I I I~~-_ _ _ _ 12' - - ~-I i - - - , ~ . _ _ EARTH DAM ~i~ ~b s ELEVATION SECTION !fp ~~lb ~ ' • ° III-~ , - M aN~O - - - - - -I ~ DISSIPATOR PAD 90~~ pt -I - _ _ - ~~b 2000 PSF MIN. - - - _ _ _ - RIP RAP ANTI-FLOATATION DEVICE - _ _ _ I ~ ~ ~ ~ BEARING CAPACITY SEE SHEET 7A FOR SIZING DATA BENEATH COLLAR Q -I-_-_-_ - EEP COLLAR ~ ~ ~-I I = ANTIS _ _ -III= _ - - ~ ~ _ _ NTS - _i i i-~ i i RCP OUTLET PIPE N TS. STANDARD 2' X 2' GRATE AND FRAME PER NCDOT 830.16 CENTERED OVER STEPS AND DRAWDOWN VALVE 4" DIP VENT & CLEANOUT PIPE da •d° C ; ' d ~ VOID SPACE CONCRETE PRECAST BOX CONSERVAl10N POOL JOINTS SHALL BE MECHANICALLY FASTENED WITH 1/4" x 2" STEEL STRAPS BOLTED WITH 3/4" BOLT5 6" PRECAST CONCRETE SLAB ~-n ' 4"x4" TEE VOID SPACE NORMAL POOL h k;:; GROUT EACH SIDE ~~:L~ PRECAST REINFORCED BOX ~'S 4" CAP WITH DRILLED ORIFICE (SEE TABLE SHEET 7A FOR SIZE) ~-n PLACE STEM SUPPORTS AT 3' FROM BASE '0-RING' GASKETED CLASS ill RCP ATTACH SKIMMER FOR EROSION CONTROL PHASE OF PROJECT POND BOTTOM DRAW DOWN OUTLET NTS \ r- r / r PAVED INVERT GROUT 6" \ ~ ''a ' ~ ° a ''e Q e' a d• . ° ~ r ~ . .d 'a °,G ' 'a ' ~ e a: . d ° ' , ' i ° 4" NRS'GATE VALVE SCREEN ACCESSIBLE VENT THROUGH DOOR RISE RISER & DRAWDOWN DEVICE DETAIL NTS NOTE: SKIMMER MAY VARY SLIGHTLY FROM ILLUSTRATION 0 FLOAT (1) RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED AT PRIOR TO THE 1. INSTALL EXISTING POND OUTLET PIPE. )R TO THE q BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT 2. INSTALL SILT & TREE PROTECTION FENCE AT TOE OF FUTURE BMP DAM. ll~ :DIMENT r p OEN 2Q0 OUTLET END; CONNECTION W Y N T ITY N TR CTION. ONCE THE SITE HA: CONTROL DEVICE DURING ROAD A A D U IL COS U 1'HE SITE HAS 3. INSTALL BMP RISER AND DOWNHILL SLOPE. R.w 6 TO OUTLET PIPE OR RISER BEEN STABILIZE AND GRADING IS COMPLETED THE BASIN SHALL BE CLEANED OUT 4. i MP AM SLOPES WITH SEED & MULCH. '9~e ANED OUT STAB LIZE B D t 0~ BARREL PIPE LONGER THAN SHOWN ~>Y 5. CONTACT TOWN OF CARY EROSION CONTROL OFFICER FOR REVIEW. ~R )M DRAIN NOT INCLUDED WITH SKIMMER AND STABILIZED. THE SKIMMER DEVICE SHALL BE REMOVED, THE BOTTOM DRAIN 6. BEGIN ROADWAY AND DAM REHABILITATION SLOPE GRADING. SUPPLIED BY USER CLOSED AND THE NORMAL POOL ESTABLISHED. 7. MAINTAIN AS MUCH DRAINAGE AS POSSIBLE INTO BASIN. (2) FINAL SEEDING OF ALL AREAS WITHIN TWO FEET OF ELEVATION ABOVE THE NORMAL 1 p0oaooeoo°oe HE NORMAL POOL ~1 CARp'^°,° FLEXIBLE JOINT (NOT TO EXCEED 3' IN LENGTH) SHALL BE A MIXTURE OF PANICUM CLANDESTINUM (DEER TONGUE) AND PENNISETUM 8. ONCE SUFFICIENT AREA IS STABILIZED AND THE TOWN EROSION CONTROL PENNISETUM GLAUCUM o°~~°°° ESS/ OFFCER ALLOWS THE REMOVAL OF THE SEDIMENT CONTROL DEVICE pF 0 0 iUPPLIER. COMPLETE INSTALLATION OF THE PERMANENT STRUCTURE. e Q~ o 0 (PEARL MILLET). SEEDING RATES SHALL BE AS RECOMMENDED BY THE SUPPLIER. ° SEAL ° I WATERING SKIMMER DETAIL TEMPORARY SEDIMENT DEV CE DE _ 9. CALL ENGINEER FOR FINAL INSPECTION. o ° e (3) ALL BMP DEVICES SHALL BE SCREEN FROM OFFSITE, INCLUDING ON SITE LOT, VIEWS NTS AN EVERGREEN SHURB SCREEN AS REQUIRED BY THE TOWN OF CARY. VI WS WITH L ~ o °^oe 9J' °°°:~G I _ USE 2.5" SKIMMER W/ 2" HEAD (TYP.) °°,0 ~i~ °°p, A. BED ~J7 0,6 00j0 p000 VI U 0000000 0 I O Date B Designer Scale % No. Revision 1 1st. REVIEW COMMENTS PER TOC 01/27/06 MS W&R 1" = 50' Sheet No. a c 2 2nd. REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date WITHERS RAVENEL MWATER MANAGMENT BASING DETAIL I ENGINEERS I PLANNERS I SURVEYORS 7B HIGHCROFT VILLAGE SUBDIVISION 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB MS 12/02/05 STORMW/ c Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 fax: 919-467-6008 www.withersravenel.com CARY WAKE COUNTY NORTH CAROLINA o JBC 204191.0 i Y SITE DATA PHASE 2B TRACT 1 TRACT2 Total ~ DEVELOPER: OWNI OWNER: WATERSHED PROTECTION THIS PROJECT MEETS THE TOWN OF CARY RESERVOIR ZONING HIGHCROFT VILLAGE PDD IMPACT PROPERTIES GROUP HIGH( HIGHCROFT INVESTORS LLC D PROTECTION ORDINANCE JORDAN LAKE WATERSHE ( OVERALL ACREAGE 11.t1 25.36 36.47 140 TOWERVIEW COURT P.O. P.O. BOX. 3557 WATERSHED AS A HIGH DENSITY USE WITH THE ) R W ACREAGE 1.11 4.60 5.71 CARY, NORTH CAROLINA, 27513 CARY, CARY, NORTH CAROLINA, 27513 NTAGE 138.8 ~ PROJECT IMPERVIOUS PERCE GENERAL NOTES 919 463-9940 FAX. 919 463-9983 EL. TEL ( ) ( ) i-9983 EL. (919) 463-9940 FAX. (919) 463-9983 PROPOSED NUMBER OF LOTS 13 89 102 1. ALL CONSTRUCTION MOST BE PERFORMED IN ACCORDANCE WITH THE CURRENT TOWN OF CARY STANDARD ATTN: COLEN DAVIDSON, JR. TTN: ~m- TTN: COLEN DAVIDSON, JR. TRACT 1 -ESTIMATE 6,000sgft IMPERVIOUS SURFACE ER LOT ALLOWS FOR 50x60 BASE FOOTPRINT, PROPOSED DENSITY (DU/ NET ACRE) 1.7 1.8 1.6 P SPECIFICATIONS AND DETAILS. 1,500 sgft. FOR WALKS & DRIVES AND ALLOWS MIN LoT slzE PROPOSED 12,050 5,211 2. WETLAND & STREAM BUFFER DELINEATION BY SOIL & ENVIRONMENTAL CONSULTANTS. STREAM BUFFERS CONTACT/CONSULTANT: ARE BASED ON TOWN OF CARY RULES & REGULATIONS. 1,500 sgft. FOR OVERRUNS & ADDITIONS. AVERAGE LOT SIZE 16,700 6,282 3. BMP DEVICES SHALL BE UTILIZED FOR SEDIMENT CONTROL DURING THE INITIAL CONSTRUCTION OF THE PROJECT. WITHERS & RAVENEL, INC. TOWN OF CARY TRACT 2 -ESTIMATE 4,200sgft IMPERVIOUS SURFACE STREETS LF 820 3,685 4,505. PER LOT ALLOWS FOR 45x55 BASE FOOTPRINT, & RAVENEL OFF-SITE TOPOGRAPHIC 111 MACKENAN DRIVE = 4. ON-SITE TOPOGRAPHIC INFORMATION BASED ON FlELD SURVEY BY WITHERS , PROJECT # 05-SB-034 SEWER FLOW 3,640 24,920 28,560 800 sgft. FOR WALKS & DRIVES AND ALLOWS N INFORMATION BASED ON WAKE COUNTY GIS DATA. CARP, NORTH CAROLINA, 27511 3008 925 sgft. FOR OVERRUNS & ADDITIONS. DENUDED ACRES 15.6 AC Y WITHERS & RAVENEL INC. TEL. 919-469-3340 FAX. 919-467-6008 5. BOUNDARY INFORMATION IS BASED ON SURVEY B , s ATTN: JASON BERTONCINO, PE IMPERVIOUS SURFACE AREA -INFRASTRUCTURE (SF) 27,659 137,014 6. DRAINAGE AREA DELINEATION BASED ON TOPOGRAPHIC DATA WITH ADJUSTMENTS MADE FOR FUTURE LOT DRAINAGE ASSUMPTIONS AND FlELD OBSERVATIONS OF EXISTING CONDI110NS. WAKE COUNTY PIN NUMBER 073 AVERAGE ALLOWABLE IMPERVIOUS AREA PER LOT (SF) 6,000 4,200 IBER 0734-02-76-0395 NOTE: 2 ARE DIVIDED BY THE CENTERLINE OF THE STREAM ESTIMATED IMPERVIOUS SURFACE LOT AREA 78,000 373,800 TRACT 1 & A 3 LOCATED BETWEEN LOTS 27 THRU 34 AND LOTS 101, 112 AND 113 IMPERVIOUS SURFACE AREA 105,659 510,814 616,473 IMPERVIOUS SURFACE % 21.8% 46.2% 38.8% ~ I I \ J ~ \ / _ I II I I \ l 1\ J / I I I \ \ \ J _ \ I / I I I ~ I \ \ \ ` ~ I / / ~ v I v _ v I v vIll III JII I I \ ~ ~ I~ I \ ` \ / ~ I I I I I 1\ ~ i I\ ~ \ l l/ II \ I I I 1 ~ ~ I ~ \ \ / l~ / I I III I 1 / ll l S r 1 ~ ~ I ! \ / \ ~ \ / I I Ir J ~ 1 1 I 1 I VA v vv / II I I( I / I I I 1 v / vv/ / / i~ J/l I ll 1 I \ l \ \ I I _ I I J I ~ it I ~ V~ \ ~ \ 1 ~ \ \ _ III \ \ _ I~ I I I I \ ~ ~ / ~ ~ I - I I / I i \ ~ ~ / J \ / A \ vv - I \ \ \ ~ - IIII` \ III / / / / ~ _ \II 1 \ I-/ I \ / I I I 1 I \ t I J J ~ / 1 I ( \ I / \ ~ \ - ~ \ - \ \ II / / \ \ . \ \ \ III I l / \ I I J ~I r \ \ \ 1 ~ ~ ~ \ I 1 1/ I I \ \ I 1 I I , - \ ~ ` - \ \ I I ~ 11 I I I \ \ \ - I I I , \ ~ I } \ - I 1 I ~ , _ {APE 'B',Bt~EE, \ \ ~ \ ~ \ \ / ~ \ _ / I ~ / \ I 1 \ \ II I II \ \ _ ~ ~ 1 l ~-1 \ ( ~ I I I \ 111 v I ~ 1 ~ II ~ II ! \ ~ \ i / I II / \ ~ \ \ / . r I 1 5 50 5, SF 5.500 SF \ \ \ \ \ \ \ \ \ \ \ \ - - . - _ / / I / \ l 5 ~ ~ ~ \ 1 \ \ \ \ \ \ \ \ \ ~G - ~ ~ I I I ~ / ~ ~v v v v 1 ~ v A I /II I vv 1~ v~ v ~ / 1 q \ \ \ \ ` ~ ~ \ \ f~l~-B734:~A2=7$~~9 ~ III \ \ ~ I ( I / / / ~ 1 / / } i I I \ x S \ \ •6832`5F' \ ~ \ 11 r'- -'1\1 I I I \ / I \ - - \ \ \ \ \ \ \ \ I I 1 ! J / \ / / ~ \ \ / / I \ >I I ~ III ~ I I ~ \ / / 1 \ / \ ~f 1 II 1 I \ ~ ~ / 1 I ? ? \ `1 I\\ \ \ 1 } 11 is ~ ` JJ I _ ? \ \ ? 1 \ \ l 1 f \ I \ ~ 1 4 - \ \ 1 ~ \ / \ / N F r~ \ \ 1 \ F I \ / I 1 \111.,111, \ \ 1 ~ ~ 11 / / , _ \ \ \ 1 \ \ \ 111 1\\1 1 \ . \ \ ( I ~ \ I JJ / III vv \ / J \ I ~ \ \ I - ~ \ \ } 1 1 \ 1 \ 1 ,111 \ \ \ \ ~ ~ - / ~ I I I ~ (l WEST CARY II \ / / ` ~ \ \ \ }1 I 1\ y ~11 1 1 111 1 \ \ / I bw , ? v v v v A I I l u 1 11 1 1 1 ~O 1 1 ~\V / \ IIII I WEST CARY APART ENTS LLC ~ / J I ~ / / J ~N II ~ / ~ l l 1 I \ ~A~h eARTNER L C \ J / / ~ \ 41 ` / r / - 4 ? 1 } \ \ ? 1 1 1 1 1 1 ~ 1 11 \ 1 1 1111 1 1\ I 4 \ / / 1 I 1 DB 7 ~ / / II I \ \ i / \ DB 7748 PG 2~7 / / I ~ 1 \ 7 / ' - ~ J 1 / / / / / / III \ DB ~06'95\RG 260 ~ _ \ / / / / l 1 1 1 1 53 54 \ ' I \ \ , 1' 11 } 1 11 X11 1\ \y 11 I / / / l a 52 1 I I i 1 1 1 1}} 1 1 1 1 1 1 \ 1 1` I' / ~ I \ ~ /PIN 07: / ~ II ` ~ 5497 Sk 5 I I ' 1 1 1 1 1~ \ \ \ I \ \ / / IIII i ~ / I I I ~ ~ ~ ( / PIN 0734.02-75-973 / / / / / ~ ~ , ~ , ` ~ / \ ? 7 6 SF 1 k I F 1 \ \ ~ _ / / I~ 1 6,327 SF< 5,32 SF ,496 SF ~ ~ ~ I I I I I 1 1 I I \ \ \ 7~ 1 ~ \ \ \ ~ \ III PINS 07~' 04 7~4 849 _ - - _ ti ~ I / / / 1 . \ \ \ c \ 1 1 .7 I I I I I 1 ~ 5,~t~ } 1 \ \ \ ` \ \ \ \ / / / / I 1 1 \ / p ~ ~ \ 1 1 1 ~ I I I I , 1 ~ I I 1 1 \ 1 1 1 \ \ \ ! \ ~ - I 1 \ ~ ~ / / I III \ \ I ~ - - - - ~ \ / / / / / i _I III \ ~ - f \ ! I \ \ _ / / i / ~ III . ,1/ ~ II , ~ - ~ ~ I I 1 m b w _ / / /6,589 I / 1 I I I I F~ j I I I ' 3.49 SF\ \ \ \ ~ 111 I 1 I I I~? \ ~ ~ ' ~ I I `gel \ \ \ ? _ / , l' / 1 ! q I I 1 I I a 1 I \ \ \ ` I I , I I u / / 1 - • / 4' II II R1 ~ \ \ \ ? , / / Ir I{3,4d9 ~ I I I I Ix ~I I I I 1 1 1 \ \ 1 1 \ 11j1 ~\\~?1Yn \ ` J i' i' / % / / / 1\ III i 1 1 \ \ ~ s / i . ~ . \ / / / / lyl /.I ^ I \m _ ~ I 1 1 I I 1 1 I I ' 0 / 1 \ \ \\1\ .•-1:_~? \ ? I I'1 ~ T / 1 \ .p ! / I I ! \ \ \ I I '\1 1\\ \ -',i i' / / l / l , 1 II 11 111 \ 1 \ - ~ i I I i I \ \ / 1 ! 1 I I I 1 / / ! ~ \ \ \ I `'z \ 1 I I 1 1 II ` \ N I 1 ~ I ~ ? \ \ / ! ! / / ! I I I 1 / I \ 1 ? \ I I I I \ 111___- ~ \ ' a I \ \ _i / / / / , 1 I 1 111 1 \ \ \ \ - / - t \ ~ / / / / I 1 \ / / ~ /r 111 / /i / / / , I I I I 1 1 1 \ ~ / ~ ' ~'~/I// 1\ 1 moo--- ~~.1 i i / / 1 I I 1 III 'N~ - _ _ ~ I ~ / Z III j n i / / ' ' / I ~ \ \ ~ ~ \ ' II I\'\\~` ~ ~ ~ ~ ~ ~ SErI I- I I ` \ ` 1 1 / / 5,351 Sf \ \ \ / . \ ~ - I 1 1 I ~ i / / / / ?+f 'i:: I 1 1 I III I I \ \ ~ \ ~ ? - /!1 111 1 , i / ?"+E'~ 1 1 I I I l 1 \ t- - / ~ ~ L~ ~ v I ~ \ \ ~ ? 1 I 1 / / / ~ - \ \ \ \ \ ? ~ / ' -11 \ I I? ~ _~i i' i' / / / I 1 I III \ ` - i--- ` ` / / l ~ / I \ 5/758 ~ / / I ~ 1 " - _ - - \ \ 1 \ \ \ I \ ~~V~• \ \ I~, yam'. 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SP\ \ B Sf~\ 5187$ SF~ I 1 ,11Q ~ ! 1 ~ V . ~ ` I ~ ` ` \ ` \ ^ \ \ 1 1 I ~ \ \ \ \ \ \ ` ~1 \ - R ~~OHNSON FAMILY LLC ~ I I 1 \ 1 \ \ 1 1 1 ' \ \ \ t I 1 1 1, ~ - ~ \ \ \ 1 t \ 11 \ \ \ \`~4a 1 \ \ \ \ \ ` \ \ \ 1 \ \ 111 \ \1\ 1 ~ ` ~ ` ` ` \ ` ~ \ \ I \ \ ~\1 I@@Ip'f S \ ~ \\11\ 11~ ` ` \ \ 1 ` \ \ DB $~•1~8\PCZ 1404 , , I , / , , I , II I I I ~•g~p r - 1 I I 1 - , ~ ` , \ \ \ / - \ I I I / 1 I I I I I I 1 I I \ \ \ \ \ \ \ ; ~O,T~'PE ~ x0033' _ _ \ \ \ ? \ \ \ \ ~V`~ D; ~1u ~ \ \ \ \Y \ 1 1 \ 1 1 1 \ ~ \ \ ` \ . 1 \ \ \ ~ \ ` \ \ \ 1 1 1 1 \ / GRAPHIC SCALE / PtN# 0734.02-67-8756 \ \ , I 1 1 i i I I I I 1 1 I I 1}y~~ I ~ ° ~ ~ ~ \ \ \ \ \ \ ` \ ` \ \ l 1 1 ? \ \ 1 \ \ l 1 1 1 \ \ \ \ \ ~ \ ~ \ \ \ \ \ \ \ 1 1 1 t I \ \ I 0 50 100 200 \ \ \ \ \ : C. ~ \ \ 1 \ \ \ \ 1 1 1 1 1 1 1 \ v : I\ : I 100 ' \ / / / 1 1 I I I 1 ~ I ~ 11 ` .,`r`~ \ \1 \ 1\ 1\ 3°~ ~ ~ti I \ ~ ~ \ y \ \ \ ZONED: ORD ~ m ~ / / l 1 i i ' 1 11 I I I ? 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STITT \ \ \ \ \ 1 \ \ \ \ 1 1- II 11 \ \ \ \ ~ ` \ \ 1 1 1 1 00° °Ao \ \ 1 \ 1 I i `1 \ \ 1 \ 1 1 1 I \ \ \ \ ` \ 1 r I o CA °o \ \ .\1 \ \ \ 1 l \ \I 1 \ " 1 ? ` ? \ \ 1 1 11 I o°° ~~°ooaeoTO~ II 18 I I \ \ \ \ \ \ \ \ \ 1 \ ` \ \ 1 \ \ \ \ 1 \ 1 \ \ \1\\\`~~\ ?~1 t 1 I "I" I °o ~~°oo epoo / 00 \ 11, 1 , , \ \ \1 \ --\\111 1' ` II ~ AUG 1 0 2006 0 ~°°°(ESS~o °N \ \ \ 1 \ 1 \ \ \ \ ! 1\ 1 I ~ ° o a °e ~ I ~ i n I I \ \ ~ \ ~ ~ \ 17 PG 533 \ 1 \ I II / ~ I I \ \ \ DB 20 \ 1 I II 1. / / I I \ \ \ \ \ \ \ \ 1 I III I I I \ \ \ ~ ~ \ PIN 0734.02-66-3246 \ \ \ \ I I 1 1 11 1 1 ~ 1 1 t l 1\ \ \ \ - 1 ? 1 1 111 11\ \ \ l l l l DENR • W ° ~ A f ° o \ \ \ 11 I 1 1 1 1 ~ I I ? \ 5901 11 j l l f I I I I I I 1 1 1 1 / 1 1 1 ATER QUALITY S E e I `I I I I \ \ \ \ \ 1 \ I I ! \ , I I / I I \ _ \ ZONED: R40 I I \ \ 11 I 1 I • . \ ..`1 \ 1 1 / / / / / I NIfTIANDSMIDST e \ \ \ 1 1 I 1 1 1 I ~ ! 1 / , , / ~ ORMWATFR BRAN ° ° , \ I 1, , ~ ~ I. , I o 259 ° o 11. \ ~ vo ° e I I III / / I I ~ ~ \ ~ , \ \ \ 1 \ \ I \ ~ 1 \I : f~ : 0 9 ° ~ o 111 I I / - ~ - _ ~ ~ - - I 1 I I \ ~ 1 1 1 o° N I III , I - - - f- -F- - - \ I 1 - - III 1~ / \ \ ? I / \ I I ~ \ I I I 11 \ °B0°°°s ooaoooo I 1 1 I I `1` 1 I o i i Sheet No. No. Revision Date B Designer Scale W&R 1 80' o Drawn By Date m JAB 07/27/06 HIGHCROFT VILLAGE SUBDIVISION SITE SITE PLAN & DRAINAGE AREAS WITHERS RAVENEL ENGINEERS I PLANNERS I SURVEYORS a Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919.469-3340 fax: 919-467.6008 www.withersravenel.com WAKE COUNTY NORTH CAROLINA a JAB 204191.0 CARY Y I 621 - - - - SR 1 - , _ L RC N- H 00 o SC a OPE NH ROAD - WETLAND POINTS COOL - - - REE - - G 0~ ~ 13 - - 7 L 1 _ _ NORTHING EASTIN G DESC. 1 ~ - 746833.07 2036699.64 "WLF 517 WLF 543 W~ (1J - - 74 WLF 542 6830.12 2036699.34 WLF 518 543 746841.72 7 2036 16.16 WLF 516 WACrc n _ ~ WLF 544 WLF 3 6 ~ 'r " wLF say ~ 746845,25 2036731.93 WLF 515 wLF 5aa CENTERLINE ~ WLF 445 TIE 500 'WLF TIE 500 ~ WLF 540 0 746833.05 2.036726.18 WLF 519 WLF 500 WLF OF ROAD 746835,62 20367`48,76 WLF 520 WLF 500 WLF 539 ~ WLF 501 WLF ; _i, WLF 502 WLF 5; LF soy wtF s36 746847.25 2036781.73 WLF 521 sot WLF s37 TOWN OF CARP z N ~ O WLF 503 ~ ~ 'WLF 536 746853.66 2036815,00 WLF 522 '3 ~ ~ ~ wLF 53s WA TERLINE EASEMEN T f ~ { ~ ~ WLF 504 ' ' WLF .535 • 746860.14 2036836,44 WLF 523 • ~ ~ WLF .535 DB 8714 PG 16 71 Q O WLf 534 - 746874.14 2036856.85. WLF 524 WLF 534 I 746899.83 2036867.21 WLF 528 W'LF 505 WLF 533 WLF 533 746910.46 2036851.41 WLF 509 WLF 506 WLF 532 LF s3z 746899.80 2036836.00 WLF 510 WLF 507 ~ F 531 V U WLF 508 ' 746893.01 2036840.07 WLF 527 WLF 510 •WLF 530 -7 WLF 511 WLF 509 ' ' ' F 529 WETLANDS 74 6883,06 2036833.53 WLF 526 GRENH ES A Z WI.F 512 WLF 528 AREA #5 ~ 746876.09 2036837.53 WLF 525 ~ WLf 515 WLF 513 SR 1627 _ WLF 514 WLF 526 WLF 527 WLF 525 0.2, ac O ~ N\F 746885.88 2036812.66 WLF 511 9066 SQ.FT ~ WLF 516 WLF 524 F 523 C0 746872.04 ~ WESTRIDGE ASSOCIATES 2036795,30 WLF 512 4 WIRE 746863.22 2036773,62 WLF 51 A ' WLF 522 ~ WLF 517 ~ WLF 521 Cn -FENCE ANC PARTNERSHIP 3 0 WLF 518 'M-F 520 746848.02 2036749,86 WLF 514 DB 5476\PG 728 WLF 519 ~ 7469.09.93 2036885.83 WLF 529 BM 1979\PG 135 ~ 746924.16 2036908,07 WLF 530 PIN# 0734.02-76-8838 74694299 2036929.17 WLF 531 ZONED: GC 746963.82 2036956.27 WLF 532 ~ UJ ~ 746986.70 2036981,83 .WLF 533 ~ ~ 747010.27 2036 7 99 .89 WLF 534 ~ ~ ~ 747016.51 2037008.45 WLF 535 I j VIClNtTY MAP ~ 747031.98 2036981,58 .WLF 503 NOT TO SCALE ~ 746975.77 2036937,26 WLF 505 i ~ 7469.55.92 2036915.11 WLF 506 1 ' 746938.65 2036884,75 WLF 507 746924.88 2036870.84 WLF 508 WLF 600 TTP'_ 1 747029.31 2037020.95 .WLF 536 CORPS OF ENGINEERS CERTIFICATE; wLF soi 747045.69 2037002.46 WLF 502 WETLANDS WLF 6D2 747059.23 2037020.93 WLF 501 "This certifies that this copy of Phis plot identifies as waters of the U. S. or wetlands all areas of wafers of the U. S„ including wetlands, regulated pursuant to Section .404 of the Ciean Wafer act ~ L~ . j ~ ~ 74705297 203703206 WLF 537 AREA #4 as determined by the undersigned on this date. Unless there is a change in the low or our 0.03 Ac 747068,01 2037038.28 WLF 538 published regulations, Phis determination of Section 404 jurisdiction may be relied upon fora LINE TABLE 7 1303 SQ.FT \ 747074.51 2037042.46 WLF 9 7 1 A ~ ~ 53 period not to exceed five years from this date, This determination was made utilizing the LINE DIRECTION DISTANCE ' 1987 Corps of Engineers Wetlands Delineation Manual." L1 S 81'51'58" W 85.21' WLF 603 r:~ 747074.06 203703252 WLF 500 L2 S 74'02' 12" W 187, 79' TO CREEK ~ 747083:35 2037037.37 WLF 540 CENTERLINE OF BRANCH WLF 604 TT CH L3 S 80' 16' 15" W i 19.49' _ 747087,27 2037026.69 WLF 445 TIE 500 IS PROPERTY LINE ~ ~~;;me - ~ L4 N 02'17'53" E 602.35' I'' ~ 747104,93 2037036.30 WLF 544 WLF say n cH ~ 747114.70 2037043.42 WLF 5.41 T;~Ie C5 N 8740'46" W 369.69' N 1 747144.00 2037033,$5 WLF 543 ~ L6 N 87'34'06" W 27,49' ~ Dote L7 N 00'20'42" W 1659.77' WLF 607 TT CH WETLANDS 747141.78 2037041.69 WLF 542 WLF 609 CL 2 N\F 746562.06 2037683.98 WLF 60 TTP LS N 00'39'30" E 453.63' I L9 N 00'35'52" E 1109.64' AREA 3 WLF 606 0 L ~ ~ DAVID S. DUKE 746556.05 203766 0.07 ac ~ 9,65 WLF 601 L 10 N 00'33'59" E 519.48' 3041 SQ.FT (i c 746531.47 2037655.47 W F r ~ DB 81,2 PG 2733 L 602 > > ~uew~ L 11 S 8725'37" E 368.96' ~ PIN 0734.02-76-8393 746497.50 2037624,70 WLF 603 ~ i, MI?;HAEL E UICKERSON, NC PLS, L-3639 DO HEREBY ~H ~RD , L 12 " W .72' S 00 40 29 603 WLF 610 CL 3 WLF 608 Cl2 ITCH 746481.14 2037609.84 WLF 604 TT CH CERTIFY THA 1` THIS MAP WAS PREPARED UNDER MY Q~ gs"" ~7 ' j 1,, p E !0 L 13 N 8757'04" E 454.66' I SUPER U.SIGr~, AND ACCURATELY DEPICTS 7HE Q. ti ~ N F TO TRA V LIN 746405.12 2037541.04 WLF 605 TT CH RAV LINE WLF 613 CL3 ? ~OCATION~ 0. SECTION 404 JURISDICTIONAL AREAS S 010738 W 385,26 746393.16 2037513.68 WLF 606 AS DELINEATED BY 801 & NyIRONMENTAL * SEAL L15 ~ 4 ALMA M. STTT ~ L~39 ~ ~ S 01 07 33 W 1114. 6 ~WL6F 6~41LCL 3 WLF 6v cL 3 746386.74 2037498,33 WLF 607 TT CH WLF s,4 cL a ~ ~ ~ wLF siz cL 4 746323.39 2037438.24 WLF 609 CL 2 ~ ; L1s s oro7'S4" W 2173,50' DB 2017 PG 533 4 ~ ,~0 0 ~ Cf ~0 ~r y . L17 N 86'52'40" E 983.32' PN# 0734,02-66-3246 wLF sss cL2 rTCL I ~ 746309.62 2037442.25 WLF 608 CL TT H °J!CHAEL E. DICKERSON, NC PLS L-3639 DATE S' SUf~~,. Q~~; L 18 ' 9F ` S 01'42 26" E 636.78' u 2 C 746292.49 2037385.54 WLF 610 CL 3 (IF,p~G'~.~ ZONED: R40 - _ _ _ - _ _ 746265.32 2037375.36 WLF 611 CL 3 I nn?~4q~ L 19 S 40'29'04" W 205.71 ' L20 S 56'51'22" W 196.10' I i • . o, - - - - - - 746257.18. 2037371.49 WLF 612 CL 4 L21 S 25'29'34' W 138.64' OD N ~F N\F ~ 746249.89 2037359.33 WLF 613 CL 3 ti NOTES: L22 S 00'34'39" E 993.62' ° RUTH SEARS BUG SEARS BUGG 746245.44 2037347.60 WLF 614 CL 4 L23 N 89'10'05" W 784.42' ~ 1. AREAS COMPUTED BY COORDINATE METHOD. BC FERN T. BUGC L24 N 00'33'34" w 519.80' rn ZN T. BUGG 746252.86 2037346.22 WLF 614,1 CL 3 2. BASIS OF BEARING IS NC GRID NAD 83. LZS N 89'25'04" E 149.96' DB 7837 PG 30( i37 PG 300 746257.18 2037337.46 WLF 614,2 CL 3 MB 1987 PG 206 3. THIS PROPERTY IS NOT LOCATED IN A FL000 AREA L26 N 00'33.30 W 1432.71' 746240.40 2037344.09 WLF 615 CL2 TTCL 37 PG 2063 745489.74 2036867.64 WLF 505 ST CH LOW PER FIRM MAP /~37183C0290E AS LAST PUBLISHED L27 N 75'5122' E 190.99' PIN# 0734,02-76-C AND REVISED 03/03/92. 4,02-76-0395 745415.64 2036936.86 WLF 504 ST CH HI H G 745655.44 2036950.84 WLF 550 TT CH 4. ALL DISTANCES ARE HORIZONTAL GROUND DISTANCES. 745651.34 2036953.36 WLF 546 TT CH 5. THIS SURVEY WAS PREPARED WITHOUT THE BENEFIT OF A T17LE REPORT AND MAY BE SUBJECT TO ANY 745651.01 203696.0.91 WLF 547 MATTERS THAT A FULL TITLE SEARCH WOULD DISCLOSE. N F 745653,93 2036964.92 WLF 548 \ 6. WETLANDS WERE DELINEATED BY S&EC WEST CARY APARTMENTS LLC 745658.59 2036956.39 WLF .549 ON APRIL 2004 AND FIELD LOCATED BY WITHERS & RA VENE_ ON APRIL 14, 2004. 745678.53 2037065.27 WLF 319 CL3 TT 502 cn DB 7748 PG 207 ( ~ 745685,40 2037082.45 WLF 551 ~ PIN# 0734,02-75-7973 745682,14 2037082.33 WLF 318 CL4 w 745679.98 2037091.08 WLF 317 CL3 MAP/DEED REFERENCES; DB 7837 PG 300 (SOURCE) ~ 745695.83 2037097.55 WLF 552 DB 7837 PG 306 (SOURCE) N ~ 745691.32 2037125.78 WLF 553 I M6 1987 PG 2063 745671,18 2037093.85 WLF 316 CL1 745675.85 2037109.67. WLF 31.5 CL4 WLF 55a 745667.74 2037118,00 WLF 314 CL1 v WLF s53 WLF 555 WLF s6o 745664.45 2037125.58 WLF 313 CL2 L WLF 552 I WlF 556 WLF 55e 745628.97 2037314,58 WLF 565 WLF 552 745634.70 20373 1 WLF 551 \ F , WLF 557 05.5 WLF 302 CL3 WL 55 IRJN PIPE FOUND • WLF 318 CL WLF 318 CL ~.F 745637.66 2037291.79 WLF 303 CL3 25 WLF 319 CL3 TT 502 • ~ COMPUTED POINT O 745638.80 2037292,12 WLF 561 :L3 TT 502 WLF 559 745642.82 2037286.08 WLF 304 CL3 WLF 550 TT CH 745636.28 2037282.13 WLF 566 WETLANDS FLAG WL 88 wLF 549 WLF 548 549 ~F ~ • • 745651.81 2037277.40 WLF 560. AND NUMBER WLF 503 - 745645.59 2037267,44 WLF 305 CL3 WLF 546 TT CH F 547 i47 ~ ~ 1- _ ~ 745655.39 2037264.25 WLF 559 I TAE To TT N WETLANDS J WLF WLF 574 ~ 745633.49 2037254.80 WLF 5 7 WETLANDS 6 START ST ~ AREA 1 745634.89 2037243.36 WLF 306 CL2 WLF 57, AREA #2 ~i 68 SOFT WLF 573 570 wLF 562 TT PL o.~3 nc 745634.98 2037236,54 WLF 568 CHANNEL CH WLF 572 5507 SQ.FT 745636.95 2037217.61 WLF 569 WLF 569 WLF 566 WI.F 563 745652.39 2037224.50 .WLF 307 CL2 WLF 566 WLF 567 745658,82 2037225.42 WLF 558 PROPERTY LINE PL WLF 565 WLF 564 N C 745669,02 2037211, 21 :WLF 557 f WLF 505 ST CH WETLANDS AREA N -p ARY PARTN R 745667.31 2037195.30. WLF 556 C E LLC 745655.41 2037195.34 WLF 308 CL3 CREEK DB 10695 PG 2607 745651.77 2037183.30 WLF 309 CL2 DEED BOOK DB. ~ PIN# 0734.04-74-9849 745649:33 2037178.56 WLF 571 ~ 745642.96 2037192:10 WLF 570 PAGE PG. N 745660.39 2037165.47 WLF 310 CL4 ~ 745655.38 2037161,57 WLF 572 BOOK OF MAPS BOM N 745657.84 2037149,74 WLF 573 S DARE FEET S .FT ~ Q Q 745662,09 2037134.51 WLF 574 w 745667.43 2037146.81 WLF 312 CL2 NEUSE BUFFER RULE NBR 745664,31 2037149.39 WLF 311 CL2. 3 • r~, 745690.01 2037145.68 .WLF 554 9.61' 4.88' ~ ~s ~ L-_ , 745674.30 2037173.75 WLF 555 ~ s:1 745619.70 2037316.92 WLF 564 ~ ZQ~~ 745631.33 2037325.64 WLF 301 CL2 745626.41 2037334.03 WLF 3000L1TT503STC '3 r~ . 200 o zoo 400 - - - - - L23 T ~ : , 745628,87 2037349.80 WLF 503 ST CH HIGH WETIANG~r,~aJ o ~~a,,,~;;~icR ofL~'dCH ~ 75.36 182.94 93.12 90, 04 95, „ TNER~SERVESUBDIVI$ION•.,. .04' 95,87' 162.80' 79,4 ' 745610.89 2037346.55 WLF 562 TT PL 1 SCALE. 1 = 100 I BM 1988 PG 11?5 x.77.: .76' THE R~'SERVE SUBDPVISIDN 745611.31 2037330.63 WLF 563 ~ ~ ~.75 1.74: I : I : I i': I 1 - I i i i /uBl 1991 PG 1684 THE RESERV.,- ' No. Revision Date BY Drawing Name Scale WL_05 1100' Drawn By Date WITHERS RAVENEL BUGG PROPERTY Sheet Na: MED/LSJ 8/17/06 WETLANDS DELINEATION Checked By Job No. } ENGINEERS I PLANNERS I SURVEYORS MED 204191 WHITE OAK TOWNSHIP WAKE COUNTY NORTH CAROLINA I 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com I - O/ - - I I I I r _ ~8 / 1 I I I 1 1 / / / / \ / I , ~ , 1 / / I I / l 1 1 l l i' i'' / , ,i' / ~ ' l / / / / ~ ' - - - , I I ~ I ~ , 1 ) / i / / l / I l , / ~ i l ~ ~ ll / l / r------ _ - LIGU~STRUM BJu1P" SCREENS- ~6C. , ~ ~ I ~ r ~ 1 r 1 / / , / / / / / / / I 1 / , / l / , / / / l / _ / I , r 1 1 I 1 1 / / / I l l 4 ~ , I l / ~ ~ j - l ' / , / l l / ' / / 1 / 1 1 i l 1 i / ~ / / ! l/ / ~ J ! 1 / l , / / / / / ~ / ~ / l l / r 1 , / T..,r~~~u~. / / I / / / / _ _ , l / 1 / , l 1 / l l l / r'r r' / 1 ' l ~l l / / / / r ~ ~ / / ~ ~ / / r l ll l ll / ' , lr 1 / / , ~ / l / , I l l l l / / r' I j I I 1 / ~ Il l l 1 / ~ ~ / / r/ / / / ! ! r 1 I \ / / / / / / / / - _ 1 ~ / / / / / / / I \ , , / / / / _ i I / / ' / IGUSTRUt~I BMP; SC ,EEN 5' O.C. I / / / , . . rr //111 y yy I , I I' / / / ~ l l - I / / / / ~ / rr l y , 1 l , , / l l / r/ r' rr ~ / r~//l I I ' I l l 1 , / rr 'k , I ~ I ! ~ ~ i I 1 I / / ' r' i r ' r \ I I t I f I I I I I r' ~ ~ I I I ~ I ~ r _ I i i 1v II r' l _ l 1 1 r I I 1 I 1 / i / / Tom,/~~../ ~.f ~ / III 1 R . / I I 1 \ r' . r 1 r ~ I I I j , ' ~ / / , r' , ~ ~ \ , , '..l... 1. . J ..l . l l I I I \ , ~ ~ ..p. I I I I I , / ' / V ~ ' / , ' , / , /,i" 1/ ~ / / / / / , , .l:')...1 .p... l I ' , / / / 0.0 , , , - f ~ , , , ./..y..../..,. I I I / , / , , / / / , , / , /q,-- _ r / , , , / / , , , , /1 / , , / / / / / , , lIl } / j,i _/ice / ' ~..1.• ~ 1 II I 1 1 I 1 ~ I I 1 \ , / , / ~ / / / , , \ I ~Illll, ' I ` \ HIGH I / , MARSH f 4,620 SF , , / , , / , ~qq,,, , ~ / , , / , , , J _,d HIGH MARSH f 1 960 SF / / ' , / _ , , ~ r' ~ ~ / 1 ' y LOW MARSH f 4,620 SF - ~ / LOW MARSH f 1,960 SF a r r 1 / , , ~ ~ \ \ \ 1 I r'~/ r' i' ' \ y~ \ \ \ / / /i L / , , , ,r , \ - ` ~ OPEN WATER f 3,960 SF 1, , ~ / - ' OPEN WATER t 1,680 SF 1 1' 1. ~ \I I r I •-•~I•~ v v / ~ ~ 1 ' / ~ \ ~ ~ I 1 / , ~J~ / / / , I 1 ~.•....I. i~~ 3 , I yl 1 ...1.... / t~ \ ~ \ / / ~ / ,r'' l I M1 , / / , / / / / / J , , , , / / / ( I / / .'.'.7......~.....F...../.. - i ~ \ ~ / r ~ ~ ' , ~ y \ \ / , , / , / / ~ 1 ! / / ~ DIM N I I , \ E S ONS ELEV. ~ , . ........j.. ...1..`... \ \ ' / - - , , , ,W r r \ l / , \ \ NORMAL POOL 5,600 SF 373.00 / • ~ DIMENSIONS ELEV. \ ' - ,~-'~35 ~ NORMAL POOL 13200 SF 342.00 TOP OF DAM WIDTH 8' ' \ , 377.00 , / / ' ~ TOP OF DAM WIDTH 8 345. ~ 00 , ~ . ~ - ~ ANTI-SEEP COLLAR 48 x 48 , ; ,1 ; I , / / ~ , a 11 1 ~ 1 }I I ~ , , ~ ~ 54 x 54 ' ' ~ ` • • • ~ ~ • • • ~ ~ • ~ ANTI-SEEP COLLAR " ~ - - 1-YEAR STORM ORIFICE 1.25 373.00 ,r \ / / / / ~ / / 1 1 / / / / - 39 TOP F ANT - / 1 \ • • • ' • •'•y'"''• • • EAR STORM ORIFICE 2.5 342.00 iii ~~~WWW"' ~ ' i i ~ r, h, , ~ 0 I FLOATATION 7 x 7 x 2 369.50 , I \ , ' TOP OF ANTI-FLOATATION 8 x 8 x 2 339.00 ~ TOP OF RISER WEIR 4 x 4 BOX 375.00 , , , ~ , ,~~,3~.~___,-~\ ~I, , -355 • ' ' • TOP OF RISER WEIR 5 x 5' BOX 343.75 - _ _ ~ OUTLET PIPE INVERT IN 24" RCP 370.00 ' _ - ' OUTLET PIPE INVERT IN 30" RCP 339.00 \ / / , - - - , , / , / 1,-=• r • • . . _ - _ OUTLET PIPE INVERT OUT 24 RCP ~ 369.00 ~ ,j , • ~ • OUTLET PIPE INVERT OUT 30" RCP 338.00 i . , , ' / / ~ / l r Y - / ~ r i r r , - PLANT LIST PLANT LIST QUA SPECIES COMMON NAME ROOT SPACING LOCATION QUA SPECIES COMMON NAME ROOT SPACING LOCATION 650 Iris virginica Blue Flag Iris Peat Pot 2 o.c. High Marsh/Edge 270 Iris virginica Blue Flag Iris Peot Pot 2' o.c. High Marsh/Edge 90 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh ~ 45 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh SCALE 1 -30 1,110 Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. High Marsh 470 Sagittaria lotifdia Broadleaf Arrowhead Peat Pot 18 o.c. High Marsh SCALE 1"=30' 1 ss5 P ontederia cordata Pickerel Weed Peat Pot 2 o.c. Low Marsh 570 Pontederia cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh 185 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 65 Saururus cernuus Lizard's Tail Quart Cont. 2' o.c. Low Marsh 44 Ligustrum Japonica Ligustrum i Gal. Cont. 5' o.c. Perimeter 65 Ligustrum Japonica Ligustrum 1 Gal. Cont. 5' o.c. Perimeter / ~ / \ /,ri r/rr / \ 1 1 \ 1 1 1 1 \ 1 , rr 1 1 1 1 1 1 \ / / / ~r ,,r/ ~ \ \ / \ } 1 \ 1 1 1 l 1 1 / r r I / \ \ \ \ 1 1 ~ ~ M/ ' r I \I \ \ I l 1 \ I ~ 1 \ 1 ~ 1 \ / / / ~ 1 / 1\ ~ I 11 4 1 I I 1J , / ~i/ \ \ 11 , ~ ~ :ate \ \ I ~ 1 1 I 411 ~ , i//' r \ rr r,/ - / 11 1 1} 1 1 I ~ r } 1 V II , , , , , ~ ~ VA 1 1 1 1 / III I , / r,r ~ _ \ ` 1 l } l } I ~ ~ \ i 1 I I I~ / /rrr ,rrr ~ t 1} 1 I I ~ 1 \ / rrr, / ! / 1\ \ \ l\ \ I!! \ / / r / / q \ \ ~ \ I - i \ ~ / / / V \ V ~ AA A II / \ / , , \ \ ~ ~ ~ \ . ~ 1 , / / ~ ~ 111 I / / / \ ~ ~ III I f , / / _ ~ III I ~ ~ ~350~ , , 1 ~~I / \ I % ~ ' ~ \ ~ 1 II HIGH MARSH t 1,155 SF 1 iii ~ / / ~ ~ 1 II r/ ~ ~ - , LOW MARSH f 1,155 SF \ l / / O 1' / j ' / ~ ~ / ~ ' ~ / , OPEN WATER f 990 SF / ~ i , m..., `e r ~ .s r/ , / / / , / ~ ~ ~ J ~ , 3s , / I / . ~ ~ ~ ~ s ~ DIMENSIONS ELEV. I i X345- ~ ~ , ~ ~ ' NORMAL POOL 3,300 SF 343.00 ' ~ ' I ' ~ ~ ~ TOP ' OF DAM WIDTH 10 347.00 " ~ ~ ~ ~ /~60_ ANTI-SEEP COLLAR 54" x 54» ~ ~ ~ ~ 1-YEAR STORM ORI ~ r, ~ ~ ~ FICE 1 343.00 TOP OF ANTI-FLOATATION 7 x 7 x 2 340.00 ~ \ o . , , , , , ~ , _ TOP OF RISER WEIR 4 x 4 BOX 344.50 Z _ Z OUTLET PIPE INVERT IN 24 RCP 339.50 OUTLET PIPE INVERT OUT 24" RCP 33 W 8.00 m °°°0p0p/00100pp°p0A°0 o PLANT LIST ~N CARS ° ~ ,oo.ovoe QUA SPECIES COMMON NAME ROOT SPACING LOCATION 1 ~,o ao, ~ 160 Iris virginica Blue Flag Iris Peot Pot 2' o.c. High Marsh/Edge i; e° FtiSSlD 9 o " ~ 25 Juncus biflorus Shore Rush Quart Cont. 2' o.c. High Marsh aQ S e o e 280 Sa ittaria latifolia Broadleaf Arrowhead Peat P " W 9 of 18 o.c. High Marsh 0 25944 0 is 415 Pontederio cordata Pickerel Weed Peat Pot 2' o.c. Low Marsh ~ SCALE 1 =30 , 9 °o, ~ 45 Saururus cemuus Lizards Tall Quart Cont. 2 o.c. Low Marsh oN °~~aoa.a.o°~~°°°° °•°p A. BERG (/~/.6 0 40 Ligustrum Japonica Ligustrum 1 Gal, Cont. 5 o.c. Perimeter p0 0e D ~ °///lelleae ~ I 0 % No. Revision Date B Designer Scale 1 1st REVIEW COMMENTS PER TOC 01/27/06 MS W&R 1- - 50' c 2 2nd REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date HIGHCROFT VILLAGE SUBDIVISION 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB MS 12/02/05 WITHERS RAVENEL Sheet No. 0 4 ToC 4th REVIEW COMMENTS .06/23/061 JAB Checked By Job No. STORMWA~ AWATER MANAGMENT BASING PLAN ENGINEERS I PLANNERS I SURVEYORS 7A o W&R 204191.0 GARY WAKE COUNTY NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 fax: 919-467-6008 www.withersravenel.com Y 4 REBAR 12" O.C. EACH WAY "PREFORMED JOINT SK SKIMMER 1/2 RISER FILLER, i2" WIDE WATER LEVEL DURING Sl , L DURING STORM 1' MIN. FREEBOARD TOP OF DAM ~r,. TRASH HOOD - - EMERGENCY SPILLWAY ELEV. ~ - - ''-i ~ - - - - PEAK FLObV ATTENUATION POOL - - - • ; - = _ - - - - - - _I ~ _ - - i- ~ - - = i ~ MINIMUM SLOPE 3 : 1 -I - _ ~ 1= _ _ - -I ~ -_I ~ _ - - 12' ~ - - - - - ~-I i - - • ~ _ - d; .:m ~ . - = EARTH DAM I- - . n - NATION SECTION ELE - I - I-~ - - - - - - DISSIPATOR PAD _ _ - RIP RAP 2000 PSF MIN. ANTI-FLOATATION DEVICE - - - - I ~ ~ ~ ~ - _ , LNG CAPACITY SEE SHEET 7A FOR SIZING DATA BEAR BENEATH COLLAR _ - -I--_-_ ANTI-SEEP COLLAR "'-I I - _ _ -III= _ - ~ - -i- NTS ~ - - - - ~ ~-iii-i i RCP OUTLET PIPE NTS. STANDARD 2' X 2' GRATE AND FRAME PER NCDOT 830.16 CENTERED OVER STEPS AND DRAWDOWN VALVE 4" DIP VENT & CLEANOUT PIPE • d .A . ~ .da C ; •~d~ VOID VOID SPACE CONSERVATION POOL CONCRETE PRECAST BOX JOINTS SHALL BE MECHANICALLY FASTENED WITH 1/4' x 2' STEEL STRAPS BOLTED WITH 3/4" BOLTS 6" PRECAST CONCRETE SLAB ~-~I 4"x4" Tl~ , VOID SPACE NORMAL POOL ~ r GROUT EACH SIDE PRECAST REINFORCED BOX M1'~4~ y 4" CAP WITH DRILLED ORIFICE ~ (SEE TABLE SHEET 7A FOR SIZE) PLACE STEM SUPPORTS AT 3' FROM BASE ~ l~7 '0-RING' GASKETED n-n CLASS III RCP ATTACH SKIMMER FOR EROSION CONTROL PHASE OF PROJECT POND BOTTOM DRAW DOWN OUTLET NTS ~ \ PA VI / PAVED INVERT .`:~t, GROUT 6' j=. ~ Q \ Q a d a• d, 'd ' f, ~ \ i\ d V 'd ' . ' ~ f ..C ,,4 ,°.,d , \ / n ~ ~ • d G . r a• d d ~ d • e d ° • a 4" NRS GATE VALVE SCREEN ACCESSIBLE VENT THROUGH DOOR RISER RISER & DRAWDOWN DEVICE DETAIL NTS NOTE: SKIMMER MAY VARY SLIGHTLY FROM ILLUSTRATION FLOAT 1. INSTALL EXISTING POND OUTLET PIPE. (1) RISER BARREL, SKIMMER AND OUTLET PIPE SHALL BE INSTALLED AT PRIOR TO THE ~ THE 2. INSTALL SILT & TREE PROTECTION FENCE AT TOE OF FUTURE BMP DAM. BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT NT OUTLET END; CONNECTION CONTROL DEVICE DURING ROADWAY AND UTILITY CONSTRUCTION. ONCE THE SITE HAS TO OUTLET PIPE OR RISER 31TE HAS 3. INSTALL BMP RISER AND DOWNHILL SLOPE. BEEN STABILIZE AND GRADING IS COMPLETED THE BASIN SHALL BE CLEANED OUT OUT 4. STABILIZE BMP DAM SLOPES WITH SEED & MULCH. BARREL PIPE LONGER THAN SHOWN AND STABILIZED. THE SKIMMER DEVICE SHALL BE REMOVED, THE BOTTOM DRAIN NOT INCLUDED WITH SKIMMER RAIN 5. CONTACT TOWN OF CARY EROSION CONTROL OFFICER FOR REVIEW. ° SUPPLIED BY USER CLOSED AND THE NORMAL POOL ESTABLISHED. z 6. BEGIN ROADWAY AND DAM REHABILITATION SLOPE GRADING. U Z 7. MAINTAIN AS MUCH DRAINAGE AS POSSIBLE INTO BASIN. °°°°p0oooaoeoooo°0000 ~ 2 FINAL SEEDING OF ALL AREAS WITHIN TWO FEET OF ELEVATION ABOVE THE NORMAL POOL W ORMAL POOL ~N CARp d°° Z FLEXIBLE JOINT NOT TO EXCEED 3' IN LENGTH) SHALL BE A MIXTURE OF PANICUM CLANDESTINUM DEER TONGUE) AND PENNISETUM GLA ° ( ( 8. ONCE SUFFICIENT AREA IS STABILIZED AND THE TOWPJ EROSION CONTROL p~°,°°°°°•°°,°!i d° NISETUM GLAUCUM ESSIp °°°tiy , OFFICER ALLOWS THE REMOVAL OF THE SEDIMENT CONTROL DEVICE a pF ~ (PEARL MILLET). SEEDING RATES SHALL BE AS RECOMMENDED BY THE SUPPLIER. ° ,Q e UER. COMPLETE INSTALLATION OF THE PERMANENT STRUCTURE. ° ~ ° SEA o 9. CALL ENGINEER FOR FlNAL INSPECTION. ° s ICE DEWATERING SKIMMER DETAIL N TEMPORARY SEDIMENT DEV MP D SHALL BE SCREEN FROM OFFSITE INCLUDING ON-SITE LOT VIEWS WITH (3) ALL B EVICES , ° ° VIEWS WITH ~ AN EVERGREEN SHURB SCREEN AS REQUIRED BY THE TOWN OF CARY. ° °e°~ a .~9~, I USE 2.5" SKIMMER W 2" HEAD TYP. ~ ( ) pN p~ A. BERG a~ , °A6 66°0!600000 J ° 0 N0. ReVISIOn Date B Designer Scale 1 1st. REVIEW COMMENTS PER TOC 01/27/06 MS WdcR 1 = 50 WITHERS RAVENEL Sheet No. i 2 2nd. REVIEW COMMENTS PER TOC 03/10/06 MS Drawn By Date - HIGHCROFT VILLAGE SUBDIVISION 3 ToC 3rd REVIEW COMMENTS 05/12/06 JAB MS 12/02/05 STORMWAT ,WATER MANAGMENT BASING DETAIL ENGINEERS I PLANNERS I SURVEYORS 7B o Checked By Job No. d GARY WAKE COUNTY NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919.469-3340 fax: 919-467.6006 www.withersravenel.com a JBC 204191.0 J1 i Y