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HomeMy WebLinkAbout20001530 Ver 1_COMPLETE FILE_20000128Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 203 Flow Element Rectangular Cho Method Manning'& Formi Solve For Channel Depth Input Data Manning* Coefic 0.050 Slope 080000 WR Bottom Width 25.00 ft Discharge 10.32 cfs Results Depth 0.16 ft Flow Area 4.1 ft2 Wetted Perimq 25.33 ft Top Width 25.00 ft Critical Depth 0.17 ft Critical Slope 0.088430 ftM Velocity 2.50 ft(b Velocity Head 0.10 it Specific Enerc 0.26 1t Froude Numb, 1.09 Flow Type 3upercritical LEVEL SPEADER DESIGN CALCULATION Design Parameters " Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. Maximum allowable downstream velocity, Va= 2.5 fps • Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q= /y• 2j2 cfs Final Design Length = -9? feet Flow Depth = 0, 1(0 -feet Avg. Gradient = 0105 ft./ft. Flow = Z cfs Velocity = So fps 0. S G .S: 7l0 Project Engineer: Wkhere & Revenel IA ..%coI1ectorsvevislon\Ieveisproad.im2 withers & Ravenel FlowMaster 0.0 ]614b] 04/25101 11:04:22 AM 0 Haseted Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Cornerstone Park Worksheet for Rectangular Channel Project Desoription Worksheet At FES 301 Flow Element Rectangular Cho Method Manning's Formi Solve For Channel Depth Input Data Mannings CoefBc 0.050 Slope 1300W ft& Bottom Width 30.00 It Discharge 7.37 cfs Results Depth 0.10 ft Flow Area 3.1 ft= Wetted Perimi 30.21 ft Top Width 30.00 ft Critical Depth 0.12 ft Critical Slope 0.073990 Nit Velocity 2.36 ft/s Velocity Head 0.09 ft Specific Energy 0.19 It roude Numb 1.29 15w Type 3upercritiicai LEVEL SPEADER DESIGN CALCULATION Design Parameters * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient 0• ao 1= Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q = ? 3 '? cfs Final Design Length= ? '40 feet Flow Depth = D. feet Avg. Gradient = ft./ft. 40,13 Flow = 7 3 cfs velocity = fps Project Engineer: VVIthers & Revenel I:\..loollectom\revisionMovelspread.fm2 withers & Revene! FlovJMaster v6.0 [614b) 04/25/01 11:09:40 AM 0 Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 205 Flow Element Rectangular Chg Method Manning's Fort, Solve For Channel Depth Input Data Mannings Coetfic 0.050 Slopre- 125000 fUlt Bottom Width 60.00 ft Discharge 16.89 cfs Results Depth 0.11 It Flow Area 6.8 ft= Wetted Perlmt 60.23 It Top Width 60.00 ft Critical Depth 0.14 ft Critical Slope 0.071432 ft/R velocity 2.47 ft/s Velocity Head 0.09 ft Specific Energy 0.21 ft Froude Numb 1.29 Flow Type 3upercrkloal LEVEL SPEADER DESIGN CALCULATION Design Parameters * Use 2-year storm event * Assume downstream diffuse flow " Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q = J ^ cfs Final Design Length = 60 feet Flow Depth = D•!i feet Avg. Gradient =? ft./ft. Flow = cfs Velocity wa q 7 fps 0.87 Project Engineet' Withers & Ravenel isl..\collectomlrevisionllevelspreed.fm2 withers & Ravenel FlowMaster v6.0 [61 4b] 04/25/01 11:09:30 AM 0 Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Cornerstone Park - Tract 8 Worksheet for Rectangular Channel Project Description Worksheet At HW 901 Flow Element Rectangular Ctm Method Manning's Forme Solve For Channel Depth Input Data Manning* Coefflo 0.05 s 1250001t/R Bottom Width 44-.W ft Discharge 3.23 cfs Results Depth 0.10 It Flow Area 1.5 ft' Wetted PerJm4 15.20 ft Top Width 15.00 It Critical Depth 0.11 ft Critical Slope 0.076879 1t/ft velocity +2a.<i" &- Velocity Head 0.08 ft Specific Enert 0.17 ft Froude Numb, A"W Flow Type V WpamrWtlF"''? LEVEL SPEADER DESIGN CALCULATION I 1 • Use 2-year storm event • Assume downstream diffuse flow • Downstream conditions - woods, leaf mulch, etc. • Maximum allowable downstream velocity, Va= 2.5 fps • Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q - 23 ofs Final Design Length = - feet Flow Depth = D, v feet Avg. Gradient = '11M. P Flow = cfs fps velocity t < -i Y Project Engineer withers & Ravenel I:l..Noomerstoneltract9Hevelsproader.fm2 withers & Rsvenei Flo*Master v6.01614bj 04/25/01 05:17:46 PM m Haestad Methods, [no. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1868 Page 1 of 1 Michael F. Easley O \ Governor ?O? WA T ?9pG r William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan Klimek, P.E., Director Division of Water Quality September 5, 2002 Highway 70 LLC 12429 Falls of the Neuse Road Wake Forest, NC 27587 Subject: Stormwater Management Highway 70 LLC Wake County, NC DW Q# 001530 Dear Madame/Sir: This Office is in receipt of the revised plans dated August 21, 2002 for the stormwater management facilities consisting of an extended detention wetlands for lot 1 at the subject facility prepared on your behalf by Withers and Ravenel and submitted to the Division on August 22, 2002. Staff from the Wetlands Unit reviewed the plans and found them acceptable. Please note that this approval shall not be construed as an approval of the dam design for Dam Safety purposes. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-9584. ?-Kl I R. Dorn ands Unit Supervis r cc: Mr. Todd St. John, Wetlands b15it Steve Mitchell, Regional Office John Holly, Raleigh Regional Office Ken Jesneck, PE, Withers and Ravenel, 111 MacKenan Drive, Cary NC 27511 File North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetiands/ Od/?-? WITHERS &' RAVENEL ENGINEERS 1 PLANNERS I SURVEYORS iii MacKenan Drive CARY, NORTH CAROLINA, 2751" (919) 469-3340 FAX (919) 467-6oo8 To: North Carolina Division of Water Quality 4o1 Wetlands Certification Unit 2321 Crabtree Blvd, Suite 250 Raleigh, North Carolina 276o4 LETTER OF TRANS TTAL DATE AU USt 21, 2002 JOB NO. 2020 6.0 ATTENTION Todd St John PHONE # 733-9584 RE: Cornerstone Park, Lot 1 DWQ Project No. oo1 0 WE ARE SENDING YOU E Attached ? Under separate cover via ? Shop Drawings ? Prints E Plans ? Samples ? Copy of Letter ? Change order ? Diskette ? the following items: ? Specifications COPIES DATE NO. DESCRIPTION 1 8/21/02 Revised Construction Plans 1 8/21/02 Response Letter "S x"OUP.. , THESE ARE TRANSMITTED as checked below: E For approval ? Approved as submitted ? Resubmit copies for approval ? For your use ? Approved as noted ? Submit copies for distribution ? As requested ? Returned for corrections ? Return corrected prints ? For review and comment ? ? FOR BIDS DUE 20 ? PRINTS RETURNED AFTER LOAN TO US REMARKS: COPYTO: File SIGNED: Ken lesneck. PE If enclosures are not as noted, kindly notify us at once. WITHERS L11? RAVENEL ENGINEERS I PLANNERS I SURVEYORS August 21, 2002 Mr. Todd St. John North Carolina Division of Water Quality 401 Wetlands Certification Unit 2321 Crabtree Blvd. Raleigh, North Carolina 27604 Reference: Stormwater Management Plan - Response Comments Lot 1, Cornerstone Park DWQ Permit #001530 W&R Project 202076.0 Dear Mr. St. John: Enclosed you will find the revised Construction Plans for the Stormwater Management Pond for Lot 1, Cornerstone Park. The orifice has been revised so that the permanent pool will be held at the design level. The orifice will be located at the elevation specified with the storm water flowing through the intake pipe and up through the orifice. The valve will remain closed at all times, except for emergency drawdown or for maintenance activities, thus forcing the stormwater up through the orifice. Thank you very much for your review. If you have any questions, please contact meat (919) 469-3340• Sincer/ely, WITHE A? NEL, INC. L? Kenneth L. Jes ec PE' 111 MacKenan Drive i Cary, North Carolina 27511 1 tel: 919.469.3340 1 tax: 919.467.6oo8 i www.withersravenel.com O`;' G William G. (°;d) Ross Secretary !! Department of Environment and Natural Resources p 'C Kerr T. Stevens Division of Water Quality January 26, 2001 Wake County DWQ Project #: 001530 APPROVAL OF 401Quality Certification and ADDITIONAL CONDITIONS and Neuse River Buffer Rules Highway 70 LLC 12429 Falls of the Neuse Road Wake Forest, NC 27587 Dear Sirs: You have our approval, in accordance with the attached conditions and those listed below, to impact 0.14 acres of we?lands, and 96 linear feet of streams to construct the cornerstine Park development (Almo Property), as you described in your application dated December 7, 2000. This approval is valid for the Neuse River buffer rules (15A NCAC 2B .033). In addition, you should get any other federal, state or local permits before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. This approval will expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application except as modified" below. If you change your project, you must notify us and you may be required to send us a new application.. If the property it s; ld, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for ccmpiying .vlth all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation ma.y _;e 1qui:5d as described in 15A NCAC 2H .0506 (h) (6) and (7). This approval shall expire when the corresponding Nationwide Permit expires or as otherwise provided in the General Certification. For this approval to be valid, you must follow the conditions 'istea ,n the attached certification and any additional conditions listed below. 1. Deed notifications or similar mechanisms shall be placed on all remaining jurisdictional wetlands and waters or areas within 50 feet of all streams and ponds to notify the state in order to assure compliance for future wetland and/or water impa?ft These mechanisms shall be put in place within 30 days of the date of this letter or the issuance of the 404 Permit (whic'never is later). 2. Stormwater shall be directed to flow at non-erosive velocities across the entire protected stream buffers. 3. An additional condition is that a final, written stormwater management plan shall be approved by this Office f.t ny areas exceeding 30 % impervious surface before the impacts specified in- this Certification occur unless you can demonstrate that non-erosive sheetflow will occur from these areas and be treated by protected stream buffers. The stcrmwa-ai management plan must include plans and specifications for stormwater management facilities designed to remove £S5"? 'I SS according to the most recent version of the NC DENR Stormwater Best Management Practices Manual. Also, before any permanent building is occupied at the subject site, the facilities, as approved by this Office, shall be constructed and operational. and the stormwater management plan, as approved by this Office, shall be implemented. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60, days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 1506 of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a hearing. 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 John Domey at 919-733-9646. c re 2, r . Stevens ..J Attachment cc: Corps of Engineers Raleigh Field Office Raleigh DWQ Regional Office File copy Central Files Raleigh Division of Land Resources Jennifer Burdette; Soil & Environmental Consultants Todd St. John A Aw NCDrNR Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699.1621 Wetlands/401 Unit: (919) 733-1786 Fax: (919) 733-9959 6 \- QO Governor ' pj William G. (Bill) Ross Secretary Department of Environment and Natural' Resources Q 'C Kerr T. Stevens Division of Water Quality DWQ Project No.: County: Annlirant Project Name: Date of Issuance of 401 Water Quality Certification: Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1621 Mail Service Center, Raleigh, NC, 27699-1621.This form may be returned to OWQ by the applicant, the applicant's authorized agent, or the project engineer.lt is not necessary to send certificates Ifrom all of these. Applicant's Certification I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: - Agent's Certification I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: if this project was designed by a Certified Professional I, , as a duly registered Professional (i.e., Engineer, Landscape Architect, Surveyor, ect.) in the State of North Carolina, having been authorized to observe (periodically, *eekly, full time) the construction of the project, for the Permittee hereby state that, to the best of my abilities, duie care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved: plans and specifications, and other supporting materials. Signature Registration No. Date t?CDENR Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699-1621 Wetlands/401 Unit: (919) 733-1786 Fax: (919) 733-9959 9? y?o z 9?. ??Id ??(3el 5 -- U+ CLI s?fi 1 1AVAC)l 0-1 0. ?l©? ?.?: amass ??d Cornerstone Park - Tract 9 Worksheet for Rectangular Channel Project Description Worksheet At FES 901 Flow Element Rectangular Cha Method Manning's Formi Solve For Channel Depth Input Data Manning* Coeffic 0.050 Slope -?OOtR'S wit Bottom Width 30.00 ft Discharge 9.85 cfs Results Depth 0.13 ft Flow Area 4.0 V Wetted Pedmr 30.27 ft Top Width 30.00 ft Critical Depth 0.15 ft Critical Slope 0.089533 ftM Velocity 2.45 We Velocity Head 0.09 ft Specific Enerl 0.23 It Froude Numb, 1.18 Flow Type A ftVAM LEVEL SPEADER DESIGN CALCULATION ?.G r I I I k Aj j? i d Design Parameters • Use 2-year storm event • Assume downstream diffuse flow • Downstream conditions- woods, leaf mulch, etc. • Maximum allowable downstream velocity, Va= 2.5 fps • Mannings n-value for downstream conditions, n = 0.46 Calculations Q = CIA (Rational Equation) C =Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q= Cfs Final Design Length = ;beet Flow Depth = 3 feet Avg. Gradient = o o ft./ft. Flow = y cfs Velocity = fps Project Engineer: 'Withers & Ravenel 1:1..bomerstoneltractgUevelsproader.fm2 withers 8 Ravenel FloWMasterv6.0 (614b] 04/25/01 04:57:24 PM 0 Haested Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755.1686 Page 1 of 1 o ? WgTF ?0?0 9pG Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W. Klirbek, P.E. Director Divisioh of Water Quality August 16, 2002 Mr. Ken Jesneck, PE Withers and Ravenel 111 MacKenan Dr. Cary, NC 27511 Subject: Cornerstone Park, Lot 1 DWQ Project No. 001530 Wake County Dear Mr. Jesneck: The Wetlands Unit staff reviewed the stormwater management plans for the subject project and determined that additional information is necessary to complete the technical review process. The required additional information is asfollows: 1. Draw Down Orifice Outlet The orifice at the "T" appears to be below the permanent pool elevation. It is not clear if it will be capped. Please clarify. Division wetlands unit staff will strive to complete a final technical review within 10 working days of receipt of the requested information. If you have any questions or would like to discuss this project, please contact me at (919) 733- 9584. Also, please note that the NCDENR Stormwater Best Management Practices Manual, April 1999, and ether documents and information can be downloaded from the Wetlands Unit web site at http://h2o.ehnr.state.nc.us/ncwetlands/. Since7ely ToA Jo n, PE Environmental Engineer cc: Raleigh Regional Office File i North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/ Project Name: Cornerstone Terrace Project No. DWQ Lot 1 SUBMITTED DESIGN: REQUIRED DESIGN: elevations I.0 average depth status Bottom of Basin (ft) Permanent Pool (ft) 396 396 ft. depth check depth Temporary Pool (ft) 397 1 ft. depth ok areas Permanent Pool SA (sq ft) 28401 8947 sq. ft. ok Drainage Area (ac) 6.71 Impervious Area (ac) 4.95 73.8 % - Forebay (ft2) 4201 14.791733 % ok Low Marsh (ft2) 12475 43.9 % check marsl Micropool (ft2) 2561 9.0172881 % check foreb( High Marsh (ft2) 9338 32.9 % ok 100.6127% volumes Temporary Pool (cu ft) 29098.08 17390 cu. ft. ok other parameters SAIDA 3.06 - Orifice Diameter (in) 5 0.46 efs drawdown - Design Rainfall (in) 1 0.7 day drawdown check draw( Linear Interpolation of Correct SAIDA **" 396 ft. Permanent Pool Depth % Impervious SAIDA from Table Next Lowest 70 2.88 Project Impervious 73.8 3.06 Next Highest 80 3.36 WITHERS &- RAVENEL ENGINEERS I PLANNERS I SURVEYORS vii MacKenan Drive CARY, NORTH CAROLINA, 27511 (919) 469-3340 FAX (919) 467-6oo8 To: NC DIVISION OF WATER QUALITY 4o1 WETLANDS UNIT 2321 CRABTREE BLVD, SUITE 250 RALEIGH, NC 276o4 WE ARE SENDING YOU ? Shop Drawings ? Copy of Letter LETTER OF l RANSWTTAL DATE 8/14/02 108 No. 2020 6.0 ATTENnON TODD ST JOHN PHONE 733-9584 RE: CORNERSTONE PARK TRACT 1 961 f: ® Attached ? Under separate cover via ? Prints ® Plans ? Samples ? Change order ? Diskette ? the follo nee I ? Specifications COPIES DATE NO. DESCRIPTION 1 8/9/02 COVER LETTER 1 8/9/01 STORM WATER-MANAGEMENT PLAN 1 8/12/02 0&M AGREEMENT THESE ARE TRANSMITTED as checked below: ? For approval ? Approved as submitted ? Resubmit copies for approval ? For your use ? Approved as noted ? Submit copies for distribution ? As requested ? Returned for corrections ? Return corrected prints ? For review and comment ? ? FOR BIDS DUE 20 ? PRINTS RETURNED AFTER LOAN TO US REMARKS: COPY TO: FILE SIGNED: KEN JESNECK, PE if enclosures are not as noted, kindly notify us at once. WITHERS RAVEN EL ENGINEERS I PLANNERS I SURVEYORS August 8, 2002 Mr. Todd St. John North Carolina Division of Water Quality 401 Wetlands Certification Unit 2321 Crabtree Blvd. Raleigh, North Carolina 27604 Reference: Stormwater Management Plan Lot 1, Cornerstone Park DWQ Permit #001530 W&R Project 202076.o Dear Mr. St. John: Enclosed you will find the Stormwater Management Pond for Lot 1, Cornerstone Park. The submittal includes the construction plans, the supporting calculations, and the Operation and Maintenance Manual form signed by the owner/developer. This Plan is being submitted in accordance with the revised Permit for this Project. We are proposing a constructed wetland to provide for nitrogen reduction and sediment removal. We feel that this is the best approach in providing the 85% total suspended reduction requirement of the permit. The constructed wetland will substitute for the requirement of the diffuse flow through the Neuse River Riparian Buffer. If you have any questions, please contact me at (919) 469-3340• Sincerely, IW? T H E Kenneth V NEL, INC. iii MacKenan Drive i Cary, North Carolina ,7511 1 tel: 919.469.3340 1 fax: 919.467.6oo8 i www.withersravenel.com CORNERSTONE PARK TERRACE EXTENDED DETENTION WETLAND BASIN OPERATION & MAINTENANCE AGREEMENT The extended detention wetland basin system is defined as the wetland basin, pretreatment including forebays and the vegetated filter if one is provided. Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wetland detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice on the skimmer of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain ,a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wetland detention basin system semi-annually or when depth is reduced to what is shown in the diagram below. Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wetland detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the accumulated sediment depth reads 0.5 feet in the main pond, the sediment shall be removed. If the elevation of the marsh areas exceeds the permanent pool elevation, the sediment should be removed to design levels. This shall be accomplished by removing and stockpiling the upper !6 inches of soil. Then the marsh area shall be excavated six inches below design elevations. Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled for more than two weeks. When the accumulated sediment depth reads 0.5 feet in the forebay and micro-pool, the sediment shall be removed. EXTENDED DETENTION WETLAND DIAGRAM 0 Permanent (Normal) Pool Elevation 396' Sediment emoval El. 394' ________________ _ Sediment Removal Elevation 395' ---------------------------------------------- Bottom evation 393' FOREBAY & MICRO-POOL MAIN POND 5' Page 1 of 2 CORNERSTONE PARK TERRACE EXTENDED DETENTION WETLAND BASIN OPERATION & MAINTENANCE AGREEMENT 5. 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. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. 7. All components of the wetland detention basin system shall be maintained in good working order. 8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All accumulated sediment and debris shall be removed from the structure, and a level elevation shall be maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or replanted as necessary. I acknowledge and agree by my signature below that I am responsible for the performance of the eight maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: WAY-iE-HF- Lb 17 J j-=L0FMt01 CU, Title: ATTO : 50tH 0 M `1 E P-":) , D j e-EcTDt oi- i7PE fZA i , ?iJ 5 Address: Highway 70, LLC 3209 Gresham Lake Rd. Ste 158-160 Raleigh, NC 27615 Phone: (919) 556-4310 Signature: Note: The legally responsible party should not be a homeowners association unless more than 30% of the I is have been sold and a resident of the subdivision has been named the president. I, Q ` a Notary Public for the State of /V L County of do hereby certify that '-?A n P ?cq er'S 2002 and acknowledge the due personally appeared before me this L?2, day of A C, execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, :?N 104 G?1O :. co, ' .?CGUN--'` i/ SEAL My commission expires d b g D ?o Page 2 of 2 WITHERS- & RAVENED. EXTENDED DETENTION WETLAND DESIGN CALCULATIONS CORNERSTONE TERRACE LOT 1, CORNERSTONE PARK Raleigh, North Carolina Prepared For: HIGHWAY 70, LLC 32og Gresham Lake Road, Suites 158 - 16o Raleigh, North Carolina 27615 Prepared By: WITHERS & RAVENEL, INC 111 MacKenan Drive Cary, North Carolina 27511 August 2002 W&R Project No. 202076 •?` tN CARD •ZESSlp •, • VIAL Ji ' _49 ., Kenneth C.; k• 'u;,+`'. / . Project Name: CORNERSTONE TERRACE Project #: 202076 City/State: Raleigh, NC Date: 6-Aug-2002 10 Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant Removal Efficiency in the Piedmont % Impervious Cover Permanent Pool Depth (feet) 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 0.59 0.49 0.43 0.35 0.31 0.29 0.26 20 0.97 0.79 0.70 0.59 0.51 0.46 0.44 30 1.34 1.08 0.97 0.83 0.70 0.64 0.62 40 1.73 1.43 1.25 1.05 0.90 0.82 0.77 50 2.06 1.73 1.50 1.30 1.09 1.00 0.92 60 2.40 2.03 1.71 1.51 1.29 1.18 1.10 70 2.88 2.40 2.07 1.79 1.54 1.35 1.26 80 3.36 2.78 2.38 2.10 1.86 1.60 1.42 90 3.74 3.10 2.66 2.34 2.11 1.83 1.67 . Source: NCDENR/DWQ Stormwater Best Management Practices, pg. 5, April 1999 Artificial Wetland (40% TN Removal; 85% TSS Removal) Grass Impervious (ft^2) (ac) (ft^2) (ac) Impervious Surfaces 0 0 215676 4.95 Pervious Surfaces 76612 1.76 0 0 . Totals 1.76 4.95 0 % Impervious Surface Area = 74 % Surface Area of Permanent Pool: Assumed depth = 3 feet SA/DA ratio = 3.07 % Minimum pond surface area (SA) = (DA' SA/DA ratio)/100 . SA = 0.206 acres or 8979 sq. ft. 71 . Normal pool elevation = 396 feet . Surface area provided = 0.652 acres . 1-Inch Runoff Volume Calculation Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987) Rv = 0.05 + 0.009(1) where, Rv = Runoff coefficient, in./in. 1 = Percent impervious Rv = 0.71 in./in. Total runoff volume from 1-inch precipitation: . Runoff volume, S = (Design rainfall) (Rv) (Drainage Area) S = 0.399 acre-ft 17394 cu. ft. • Riser structure crest elevation = 397 feet Runoff storage provided = 0.668 ` -'ac-ft . Stormwater Calcs_Cornerstone Terrace.xls 1 Project Name: CORNERSTONE TERRACE Project #: 202076 City/State: Raleigh, NC Date: 6-Aug-2002 2-year Peak Attentuation Calculations Pre-development Peak Q2 = 9.74 cfs Post-development Peak Q2 = 0.50 cfs 2-yr & 10-yr Peak Attentuation Calculations for Compliance with Raleigh's Interim Policy Cl -7017 2-yr 10-yr R-4 Development Qpeak = 19.5 25.4 cfs Post-development Qpeak = 0.5 1.63 cfs Stormwater Calcs_Cornerstone Terrace.xls 2 i • • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Job File: K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Rain Dir: I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\ JOB TITLE Cornerstone Terrace Lot 1, Cornerstone Park Artificial Wetland Design W&R Project #202076 August 2002 The Modified Rational Method was used to determine peak discharge rates and side the detention storage for the extended detention wetland due to its small size (8.5 acres). The Modified Rational method is an extension of the rational method for rainfalls with durations greater than the time of concentration. The method was modified so that the concepts of the rational method (peak discharge) could be used to develop hydrographs for storage routing. The Modified Rational Method within PondPack calculates the storage volume for hydrographs of rainfalls of various durations to determine the critical duration for the design storm as the one requiring the greatest detention storage volume. This critical duration is used to calculate the discharge rate and volume of water that is routed through the pond structure. The hydrograph developed maintains the calculated volume and adjusts the peak discharge rate accordingly. Thus, the peak discharge for the Modified Rational Method is less than the calculated Rational Method. The rainfall data used in this design was taken from the Intensity-Duration-Frequency Table for the Raleigh area published in the City of Raleigh Stormwater Management Design Manual. The time of concentration was set at 5 minutes for this design. The proposed extended detention wetland is designed to capture the runoff volurce from the first 1-inch of rainfall and slowly release it over a 48 to 72 hour period. Toe, outlet structure is also designed to attenuate the 2-year storm to pre-development conditions and the 10-year storm to R-4 density conditions (compliance with CR-7017). Inaddition, the wetland is designed to pass the 100-year design storm through the riser/barrel outlet structure of the pond. Artificial Wetland Design Highlights: Normal Pool Elevation = 396' Required Surface Area = 0.206 acres Surface Area Provided = 0.621 acres Required storage volume for runoff from 1-inch rainfall = 0.399 ac-ft Storage volume provided = 0.668 ac-ft at 397' Top of Dam = 399' Calculated Freeboard for the 10-yr design storm = 1.92 ft Calculated Freeboard for the 100-yr design storm = 1.5 ft Outlet Structure: ¦ 48" RCP riser structure with crest at 397' ¦ 24" RCP barrel structure; 57 linear feet; Inverts at 393' and 392.43' ¦ 5" Circular Orifice at 396' for extended draw-down • • • • • • • • • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Table of Contents ********************** MASTER SUMMARY ********************** Watershed....... Mod. Rational Grand Summary ........ 1.01 Master Network Summary ............. 1.02 ********************** RAINFALL DATA *********************** 1-yr IDF Table.. 1-yr I-D-F Table ........................ 2.01 2-yr IDF Table.. 2-yr I-D-F Table ........................ 2.01 10-yr IDF Table 10-yr I-D-F Table ........................ 2.02 100-yr IDF Table 100-yr I-D-F Table ........................ 2.02 ********************** TC CALCULATIONS ********************* PROPOSED AREA 1 Tc Calcs ........................... 3.01 R-4 DEVELOPED TC Tc Calcs ........................... 3.02 *********************** POND VOLUMES ***r*r**********r****** WETLAND......... Vol: Elev-Area ..................... 4.01 ******************** OUTLET STRUCTURES ********************* OUTLET.......... Outlet Input Data .................. 5.01 Composite Rating Curve ............. 5.04 r CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Table of Contents (continued) *********************** POND ROUTING *********************** WETLAND......... Pond E-V-Q Table ................... 6.01 ****************** RATIONAL METHOD CALCS ******************* AREA 1.......... 1-yr Mod. Rational Storm Calcs .......... 7.01 AREA 1.......... 2-yr Mod. Rational Storm Calcs .......... 7.02 AREA 1.......... 10-yr Mod. Rational Storm Calcs .......... 7.03 AREA 1.......... 100-yr Mod. Rational Storm Calcs .......... 7.04 PREDEV AREA 1... C and Area; Tc ..... ................ 7.05 PREDEV AREA 1... Rational Peak Qs ... ................ 7.06 R-4 DEV AREA 1.. C and Area; Tc ..... ................ 7.07 R-4 DEV AREA 1.. Rational Peak Qs ... ................ 7.08 PROPOSED AREA 1 C and Area; Tc ..... ................ 7.09 PROPOSED AREA 1 Rational Peak Qs ... ................ 7.10 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Mod. Rational Grand Summary Page 1.01 Name.... Watershed File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW ************************************************************************ ************************************************************************ * * * * * MODIFIED RATIONAL METHOD * ---- Grand Summary For All Storm Frequencies ---- * * * * ************************************************************************ Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) Area = 6.710 acres Tc = .0833 hrs ................ ......... ............ ...... .............. ................... VOLUMES Freq. Adjusted Duration I Qpeak Allowable Inflow Storage years 'C' ---------------- hrs --------- in/hr ------------ cfs ------ cfs ----------- -- ac-ft -------- ac-ft ----------- 1 .766 .4000 2.5289 13.11 11.00 I .433 .214 2 .766 .4000 3.1611 16.39 14.00 .542 .262 10 .766 .4167 4.1659 21.60 19.00 I .744 .351 100 .766 .5667 4.9606 25.72 23.00 I 1.205 .587 • • • • • • • • • • • • • • • • • • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Master Network Summary Page 1.02 Name.... Watershed File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW MASTER DESIGN STORM SUMMARY Default Network Design Storm File, ID RAL_IDF.IDQ Raleigh IDF Rainfall Return Event Type IDF File IDF ID -------- 1-yr ---- --------------- I-D-F Table -------- - RAL_IDF --------------- 1-yr IDF Table 2-yr I-D-F Table RAL IDF 2-yr IDF Table 10-yr I-D-F Table RAL_IDF 10-yr IDF Table 100-y r I-D-F Table RAL_IDF 100-yr IDF Table MASTER NETWORK SUMMARY Modified Rational Me thod Network (*Node=Outfall; +Node =Diversion;) (Trun= H YG T runcation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event ac-ft Trun hrs cfs ft - - - -------- ac-ft ----------- -------- AREA 1 --------- ---- AREA ------ ---------- -- 1 .433 --------- - .0833 -- -- 13.11 - AREA 1 AREA 2 .542 .0833 16.39 AREA 1 AREA 10 .744 .0833 21.60 AREA 1 AREA 100 1.205 .0833 25.72 *OUTLET JCT 1 .322 .4700 .43 *OUTLET JCT 2 .415 .4700 .50 *OUTLET JCT 10 .589 .4900 1.63 *OUTLET JCT 100 1.042 .6000 14.37 WETLAND IN POND 1 .433 .0900 13.11 WETLAND IN POND 2 .542 .0900 16.39 WETLAND IN POND 10 .743 .0900 21.60 WETLAND IN POND 100 1.204 .0900 25.72 WETLAND OUT POND 1 .322 .4700 .43 396.64 425 WETLAND OUT POND 2 .415 .4700 .50 396.80 ;531 WETLAND OUT POND 10 .589 .4900 1.63 397.08 ;725 WETLAND OUT POND 100 1.042 .6000 14.37 397.50 1.012 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... I-D-F Table Page 2.01 Name.... 1-yr IDF Table Tag: 1-yr Event: 1 yr File.... I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\RAL_IDF.IDF Title... 1-yr Design Storm (80$ of 2-yr) Storm... 1-yr IDF Table Tag: 1-yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0833 .1670 .2500 .3330 .5000 .6670 .8330 1.0000 1.5000 2.0000 3.0000 6.0000 12.0000 24.0000 4.6080 3.8080 3.2320 2.7760 2.1600 1.8240 1.5520 1.3600 .9760 .7600 .5680 .3520 .2080 .1200 Type.... I-D-F Table Name.... 2-yr IDF Table Tag: 2-yr Event: 2 yr File.... I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\RAL_IDF.IDF Title... 2-yr Storm from City of Raleigh IDF Table Storm... 2-yr IDF Table Tag: 2-yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0833 5.7600 .1670 4.7600 .2500 4.0400 .3330 3.4700 .5000 2.7000 .6670 2.2800 .8330 1.9400 1.0000 1.7000 1.5000 1.2200 2.0000 .9500 3.0000 .7100 6.0000 .4400 12.0000 .2600 24.0000 .1500 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... I-D-F Table Page 2.02 Name.... 10-yr IDF Table Tag: 10-yr Event: 10 yr File.... I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\RAL_IDF.IDF Title... 10-yr Event Table from City of Raleigh IDF Table Storm... 10-yr IDF Table Tag: 10-yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0833 .1670 .2500 .3300 .5000 .6670 .8330 1.0000 1.5000 2.0000 3.0000 6.0000 12.0000 24.0000 7.5000 6.1300 5.2500 4.6400 3.7100 3.1500 2.7100 2.4100 1.7400 1.3700 1.0200 .6500 .3900 .2200 Type.... I-D-F Table Name.... 100-yr IDF Table Tag: 100-yr Event: 100 yr File.... I:\ENGFILE\HAESTAD\PPW RAINFALL DATA\WAKE CO\RAL_IDF.IDF Title... 100-yr Event from City of Raleigh IDF Table Storm... 100-yr IDF Table Tag: 100-yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0833 9.7200 .1670 8.4000 .2500 7.2400 .3330 6.4700 .5000 5.2800 .6670 4.4800 .8330 3.8800 1.0000 3.5000 1.5000 2.5300 2.0000 2.0000 3.0000 1.5000 6.0000 .9600 12.0000 .5700 24.0000 .3300 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Tc Calcs Name.... PROPOSED AREA 1 Page 3.01 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: User Defined Description: Tc = 5 Minutes Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------- ------------------------- CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Tc Calcs Name.... R-4 DEVELOPED TC Page 3.02 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW TIME OF CONCENTRATION CALCULATOR ........................................................................ ........................................................................ Segment #1: Tc: User Defined Description: Tc = 5 minutes in On-site Pipe System Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------- ------------------------- • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Vol: Elev-Area Name.... WETLAND Page 4.01 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) (sq.in) (acres) ----------- (acres) ----------------- (ac-ft) --------- (ac-ft) ------------- ----------- 396.00 ----------- ----- .6520 .0000 .000 .000 397.00 ----- .6850 2.0053 .668 .668 398.00 ----- .7180 2.1043 .701 1.370 399.00 ----- .7520 2.2048 .735 2.105 POND VOLUME EQUATIONS * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-ELI) * (Areal + Area2 + sq.rt.(Areal*Area2)) where: ELI, EL2 = Lower and upper elevations of the increment Areal,Area2 = Areas computed for ELI, EL2, respectively Volume = Incremental volume between ELI and EL2 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Outlet Input Data Page 5.01 Name.... OUTLET File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW REQUESTED POND WS ELEVATIONS: Min. Elev.= 396.00 ft Increment = .10 ft Max. Elev.= 399.00 ft OUTLET CONNECTIVITY ---> Forward Flow Only (Upstream to DnStream) <--- Reverse Flow Only (DnStream to UpStream) < --- > Forward and Reverse Both Allowed Structure No. Outfall E1, ft E2, ft Stand Pipe RI ---> CV 397.000 399.000 Orifice-Circular OR ---> CV 396.000 399.000 Culvert-Circular CV ---> TW 393.000 399.000 TW SETUP, DS,Channel CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Outlet Input Data Page 5.02 Name.... OUTLET File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW OUTLET STRUCTURE INPUT DATA Structure ID = RI Structure Type ----------------- = Stand Pipe ------------- ------ # of Openings = 1 Invert Elev. = 397.00 ft Diameter = 4.0000 ft orifice Area = 12.5664 sq.ft orifice Coeff. _ .600 Weir Length = 12.57 ft Weir Coeff. = 3.100 K, Submerged = .000 K, Reverse = 1.000 Kb,Barrel = .000000 (per ft of full flow) Barrel Length = .00 ft Mannings n = .0000 Structure ID = OR Structure Type = Orifice-Circular ------------------------------------ # of Openings = 1 Invert Elev. = 396.00 ft Diameter = .4167 ft Orifice Coeff. _ .600 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Outlet Input Data Name.... OUTLET Page 5.03 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW OUTLET STRUCTURE INPUT DATA Structure ID = CV Structure Type = ------------------- Culvert-Circular ----------------- No. Barrels = 1 Barrel Diameter = 2.0000 ft Upstream Invert = 393.00 ft Dnstream Invert = 392.43 ft Horiz. Length = 57.00 ft Barrel Length = 57.00 ft Barrel Slope = .01000 ft/ft OUTLET CONTROL DATA ... Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .012411 (per ft of full flow) Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. .. Equation form = 1 Inlet Control K = .0098 Inlet Control M = 2.0000 Inlet Control c = .03980 Inlet Control Y = .6700 T1 ratio (HW/D) = 1.155 T2 ratio (HW/D) = 1.302 Slope Factor = -.500 Use unsubmerged inlet control Form 1 equ. below T1 elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... At T1 Elev = 395.31 ft ---> Flow = 15.55 cfs At T2 Elev = 395.60 ft ---> Flow = 17.77 cfs Structure ID = TW Structure Type = TW SETUP, DS Channel ------------------------------------ FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES ... Maximum Iterations= 30 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 ft Min. Q tolerance = .10 cfs Max. Q tolerance = .10 cfs CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Composite Rating Curve Name.... OUTLET Page 5.04 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Notes -------- -------- ----- --- Converge ------- --- --- ------------ Elev. Q TW Elev Error ft cfs ft +/-ft Contrib uting Structures -------- 396.00 ------- .00 ----- Free --- ----- - Outfall ------- (no Q: ------ RI,OR ------------ ,CV) 396.10 .02 Free Outfall OR,CV (no Q: RI) 396.20 .08 Free Outfall OR,CV (no Q: RI) 396.30 .17 Free Outfall OR,CV (no Q: RI) 396.40 .27 Free Outfall OR,CV (no Q: RI) 396.50 .35 Free Outfall OR,CV (no Q: RI) 396.60 .41 Free Outfall OR,CV (no Q: RI) 396.70 .46 Free Outfall OR,CV (no Q: RI) 396.80 .50 Free Outfall OR,CV (no Q: RI) 396.90 .55 Free Outfall OR,CV (no Q: RI) 397.00 .58 Free Outfall OR,CV (no Q: RI) 397.10 1.85 Free Outfall RI,OR,C V 397.20 4.14 Free Outfall RI,OR,C V 397.30 7.09 Free Outfall RI,OR,C V 397.40 10.57 Free Outfall RI,OR,C V 397.50 14.52 Free Outfall RI,OR,C V 397.60 18.88 Free Outfall RI,OR,C V 397.70 23.52 Free Outfall RI,OR,C V 397.80 28.21 Free Outfall RI,CV (no Q: OR) 397.90 29.75 Free Outfall RI,CV (no Q: OR) 398.00 30.17 Free Outfall RI,CV (no Q: OR) 398.10 30.58 Free Outfall RI,CV (no Q: OR) 398.20 30.98 Free Outfall RI,CV (no Q: OR) 398.30 31.38 Free Outfall RI,CV (no Q: OR) 398.40 31.77 Free Outfall RI,CV (no Q: OR) 398.50 32.16 Free Outfall RI,CV (no Q: OR) 398.60 32.54 Free Outfall RI,CV (no Q: OR) 398.70 32.92 Free Outfall RI,CV (no Q: OR) 398.80 33.30 Free Outfall RI,CV (no Q: OR) 398.90 33.66 Free Outfall RI,CV (no Q: OR) 399.00 34.03 Free Outfall RI,CV (no Q: OR) CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Pond E-V-Q Table Page 6.01 Name.... WETLAND File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW LEVEL POOL ROUTING DATA HYG Dir = K:\02\02-070\02076\H&H\ Inflow HYG file = NONE STORED - WETLAND IN 1-yr Outflow HYG file = NONE STORED - WETLAND OUT 1-yr Pond Node Data = WETLAND Pond Volume Data = WETLAND Pond Outlet Data = OUTLET No Infiltration INITIAL CONDITIONS ---------------------------------- Starting WS Elev = 396.00 ft Starting Volume = .000 ac-ft Starting Outflow = .00 cfs Starting Infiltr. _ .00 cfs Starting Total Qout= .00 cfs Time Increment = .0100 hrs Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0` ft cf,s ac-ft acres cfs cfs cfs --- ----------- 396.00 ----------- .00 ------------ .000 ----------- .6520 ----------- .00 ------------ .00 ------- .00 396.10 .02 .065 .6553 .00 .02 158.21 396.20 .08 .131 .6585 .00 .08 317.25 396.30 .17 .197 .6618 .00 .17 477.06 396.40 .27 .263 .6651 .00 .27 637.73. 396.50 .35 .330 .6684 .00 .35 799.17: 396.60 .41 .397 .6717 .00 .41 961.39: 396.70 .46 .464 .6750 .00 .46 1124.41 396.80 .50 .532 .6783 .00 .50 1288.17` 396.90 .55 .600 .6817 .00 .55 1452.78 397.00 .58 .668 .6850 .00 .58 1618.19 397.10 1.85 .737 .6883 .00 1.85 1785.63 397.20 4.14 .806 .6915 .00 4.14 1954.89 397.30 7.09 .875 .6948 .00 7.09 2125.54 397.40 10.57 .945 .6981 .00 10.57 2297.58` 397.50 14.52 1.015 .7014 .00 14.52 2470.88 397.60 18.88 1.085 .7047 .00 18.88 2645.39` 397.70 23.52 1.156 .7080 .00 23.52 2820.98 397.80 28.21 1.227 .7113 .00 28.21 2997.37 397.90 29.75 1.298 .7147 .00 29.75 3171.47 398.00 30.17 1.370 .7180 .00 30.17 3345.25 398.10 30.58 1.442 .7214 .00 30.58 3519.83 398.20 30.98 1.514 .7247 .00 30.98 3695.22! • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Pond E-V-Q Table Page 6.02 Name.... WETLAND File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW LEVEL POOL ROUTING DATA HYG Dir = K:\02\02-07 0\02076\H&H\ Inflow HYG file = NONE STORED - WETLAND IN 1-yr Outflow HYG file = NONE STORED - WETLAND OUT 1-yr Pond Node Data = WETLAND Pond Volume Data = WETLAND Pond Outlet Data = OUTLET No Infiltration INITIAL CONDITIONS ------------------- Starting WS Elev ----------- = 396.00 ---- ft Starting Volume = .000 ac-ft Starting Outflow = .00 cfs Starting Infiltr. _ .00 cfs Starting Total Qout= .00 cfs Time Increment = .0100 hrs Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0 ft cfs ac-ft acres cfs cfs cfs ---------------------- 398.30 31.38 ------------ 1.587 ------------- .7281 ----------- .00 ---------- 31.38 ---------- 3871.37` 398.40 31.77 1.660 .7315 .00 31.77 4048.39: 398.50 32.16 1.733 .7349 .00 32.16 4226.22` 398.60 32.54 1.807 .7383 .00 32.54 4404.88'. 398.70 32.92 1.881 .7417 .00 32.92 4584.35 398.80 33.30 1.955 .7451 .00 33.30 4764.59 398.90 33.66 2.030 .7486 .00 33.66 4945.71; 399.00 34.03 2.105 .7520 .00 34.03 5127.65 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Mod. Rational Storm Calcs Page 7.01 Name.... AREA 1 Tag: 1-yr Event: 1 yr File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Storm... 1-yr IDF Table Tag: 1-yr MODIFIED RATIONAL METHOD - --- Summary for Single Storm Frequency - --- Q = CiA * U nits Conversion; Where Conversion = 435 60 / (12 * 3600) RETURN FREQUENCY: ----------------- 1 yr 'C' Adjustment = 1.000Allowable ---------------------------------------- Q = 11.00 --------- cfs ---------- Hydrograph Storm Duration, Td = .4000 hrs Tc = .0833 hrs Hydrograph File: 1-yr ................. ............................. ........... ......... VOL ..........: UMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' 'C' hrs in/hr acres cfs ac-ft ac-ft -- ----------------- .766 .766 ----------------------------- .0833 4.6080 6.710 -------- -- 23.89 --------- .164 -------- .089 .766 .766 .1667 3.8112 6.710 19.76 .272 .159 .766 .766 .2500 3.2320 6.710 16.76 .346 .195 .766 .766 .3333 2.7748 6.710 14.39 I .396 .207 ***************** **************************************** *** Storage Maximum. 766 .766 .4000 2.5289 6.710 13.11 I .433 .214 ********************************************************* ********* ********** .766 .766 .5000 2.1600 6.710 11.20 .463 .198 .766 .766 .6667 1.8247 6.710 9.46 Qpeak < Qallow CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Mod. Rational Storm Calcs Page 7.02 Name.... AREA 1 Tag: 2-yr Event: 2 yr File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Storm... 2-yr IDF Table Tag: 2-yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN ------- FREQUENCY: ---------- 2 yr 'C' ---------- Adjustment ----------- = 1.000Allowable ------------------- Q = 14.00 --------- cfs ---------- Hydrograph Storm Duration, Td = .4000 hrs Tc = .0833 hrs Hydrograph File: 2-yr ....... .......... .......... ........... ........ ........... ......... VOL ..........: UMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage' -Cl 'C' hrs in/hr acres cfs ac-ft ----- ac-ft ---------- ------- .766 ---------- .766 ---------- .0833 ----------- 5.7600 ------- 6.710 --------- -- 29.87 I ---- .206 .109 .766 .766 .1667 4.7640 6.710 24.70 .340 .196 .766 .766 .2500 4.0400 6.710 20.95 .433 .240 .766 .766 .3333 3.4685 6.710 17.99 .495 .254 *************************** *********** ******************* *** Stora ge Maximum' .766 .766 .4000 3.1611 6.710 16.39 .542 .262 *************************** *********** ******************* ********* ********** .766 .766 .5000 2.7000 6.710 14.00 ( .579 .241 .766 .766 .6667 2.2808 6.710 11.83 Qpeak < Qallow CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Mod. Rational Storm Calcs Page 7.03 Name.... AREA 1 Tag: 10-yr Event: 10 yr File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Storm... 10-yr IDF Table Tag: 10-yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN FREQUENCY: 10 yr 'C' Adjustment = 1.000Allowable Q = 19.00 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .4167 hrs Tc = .0833 hrs Hydrograph File: 10-yr VOLUM ES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage' Oct hrs in/hr acres cfs ac-ft -- ------- ac-ft -------- ---------------- .766 .766 ---------- .0833 ----------- 7.5000 --------- 6.710 -------- -- 38.89 I - - .268 .137 .766 .766 .1667 6.1355 6.710 31.81 .438 .242 .766 .766 .2500 5.2500 6.710 27.22 562 .301 .766 .766 .3333 4.6218 6.710 23.97 .660 .333 ************************** ********************************** Storage Maximum .766 .766 .4167 4.1659 6.710 21.60 .744 .351 .766 .766 .5000 3.7100 6.710 19.24 .795 .337 .766 .766 .6667 3.1511 6.710 16.34 Qpeak < Qallow CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Mod. Rational Storm Calcs Page 7.04 Name.... AREA 1 Tag: 100-yr Event: 100 yr File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW Storm... 100-yr IDF Table Tag: 100-yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN -- ---- FREQUENCY: ---------- 100 yr --------- -C' Adjustment = ------------------ 1.000Allowable -------------- Q = 23.00 ---------- cfs -------- Hydrograph Storm Duration, Td = .5667 hrs Tc = .0833 hrs Hydrograph File: 100-yr ....... .......... ......... ........ VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'Cl 'C' hrs in/hr acres cfs ac-ft ------- - ac-ft -------- ------ .766 ----------- .766 --- .0833 ----------- 9.7200 ------- 6.710 ---------- --- 50.40 -- .347 .189 .766 .766 .1667 8.4053 6.710 43.58 I .600 .363 .766 .766 .2500 7.2400 6.710 37.54 I .776 .459 .766 .766 .3333 6.4676 6.710 33.54 .924 .528 .766 .766 .5000 5.2800 6.710 27.38 1.131 .577 ******************************************** **************** Storage Maximum, 766 .766 .5667 4.9606 6.710 25.72 1.205 .587 .766 .766 .6667 4.4816 6.710 23.24 I 1.280 .568 .766 .766 .8333 3.8792 6.710 20.12 Qpeak < Qallow CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... C and Area Page 7.05 Name.... PRE-DEVELOPMENT File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW RATIONAL C COEFFICIENT DATA Area C x Area Soil/Surface Description C acres acres -------------------------------- -------- ---------- ---------- Wooded .2500 6.710 1.678 WEIGHTED C & TOTAL AREA ---> .2500 6.710 1.678 Type.... Tc Calcs Name.... PRE-DEV KIRPICH TIME OF CONCENTRATION CALCULATOR ------------------------------------------------------------------------ Segment #1: Tc: Kirpich (TN) Description: Pre-Development Kirpich Hydraulic Length 847.00 ft Slope .055500 ft/ft multiplier 1.000 (Tc Adjustment) Avg.Velocity 3.31 ft/sec Segment #1 Time: .0711 hrs ----------------------------------------------------------------------- ------------------------- ------------------------- Total Tc: .0711 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Rational Peak Q's Page 7.06 Name.... PREDEV File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND- 202076.PPW SUMMARY OF RATIONAL METHOD PEAK DISCHARGES Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) Rational Storms: RAL IDF.IDQ Raleigh IDF Tag Freq File IDF Curve 100-yr 100 RAL_IDF.IDF 100-yr IDF Table Tc = .0833 hrs Tag Freq C C adj I C I Area (years) factor final in/hr acres 1-yr 1 .250 ------ 1.000 -- -- .250 - ---- 4.6080 ---------- 6.710 2-yr 2 .250 1.000 .250 5.7600 6.710 10-yr 10 .250 1.000 .250 7.5000 6.710 100-yr 100 .250 1.000 .250 --------- 9.7200 ---------- 6.710 ---------- Peak Q cfs 7.79 9.74 12.69 16.44 • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... C and Area Page 7.07 Name.... R-4 DEV AREA 1 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW RATIONAL C COEFFICIENT DATA Area C x Area Soil/Surface Description C acres acres -------------------------------- -------- ---------- ---------- Drainage Area at R-4 .5000 6.710 3.355 WEIGHTED C & TOTAL AREA ---> .5000 6.710 3.355 Type.... Tc Calcs Name.... R-4 DEVELOPED TC File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW TIME OF CONCENTRATION CALCULATOR ........................................................................ ........................................................................ Segment #1: Tc: User Defined Description: Tc = 5 minutes in On-site Pipe System Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs i • • • • • • CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Rational Peak Q's Page 7.08 Name.... R-4 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW SUMMARY OF RATIONAL METHOD PEAK DISCHARGES Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) Rational Storms: RAL IDF.IDQ Raleigh IDF Tag ----- Freq ------ File ------- ----- IDF Curve ----------- ----- 100-yr 100 RAL_IDF.IDF 100-yr IDF Table Tc = .0833 hrs Tag Freq C C adj ---------- C -------- I ----------- Area (years) factor final in/hr acres ----- 1-yr ------ 1 ----- .500 ------ 1.000 ---------- I .500 -------- 4.6080 ----------- 6.710 2-yr 2 .500 1.000 .500 5.7600 6.710 10-yr 10 .500 1.000 .500 7.5000 6.710 100-yr 100 .500 1.000 .500 ---------- 9.7200 -------- 6.710 ----------- Peak Q cfs 15.59 19.49 25.37 32.88 r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... C and Area Page 7.09 Name.... PROPOSED AREA 1 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW RATIONAL C COEFFICIENT DATA ......................................................................... ......................................................................... Area C x Area Soil/Surface Description C acres acres -------------------------------- -------- ---------- ---------- Impervious On-site Area .9500 4.950 4.703 Pervious On-site Area; lawn .2500 1.760 .440 WEIGHTED C & TOTAL AREA ---> .7664 6.710 5.143 ......................................................................... ......................................................................... Type.... Tc Calcs Name.... PROPOSED AREA 1 File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: User Defined Description: Tc = 5 Minutes Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------- ------------------------- CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Rational Peak Q's Page 7.10 Name.... POSTDEV File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW SUMMARY OF RATIONAL METHOD PEAK DISCHARGES Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) Rational Storms: RAL IDF.IDQ Raleigh IDF Tag ----- Freq ------ File ------ ------ IDF Curve ----------- ----- 100-yr 100 RAL_IDF.IDF 100-yr IDF Table Tc = .0833 hrs Tag Freq C C adj ---------- C -------- I ----------- Area I Peak Q (years) factor final in/hr acres cfs ----- 1-yr ------ 1 ----- .766 ------ 1.000 ?- ---- I .766 -------- 4.6080 -----------? 6.710 --- 23.89 2-yr 2 .766 1.000 I .766 5.7600 6.710 I 29.87 10-yr 10 .766 1.000 .766 7.5000 6.710 I 38.89 100-yr 100 .766 1.000 .766 ---------- 9.7200 -------- 6.710 ----------- 50.40 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Time-Elev Page 8.01 Name.... MIN. DRAIN TIME FOR RUNOFF FROM FIRST 1-INCH RAINFALL File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW TIME vs. ELEVATION (ft) Time I Output Time increment = .2500 hrs hrs Time on left represents time for first value in --------------- each row. ---------- ---------I- .0000 --------------- 396.60 ----------- 396.59 ---------- 396.58 396.56 396.55 1.2500 396.54 396.53 396.52 396.51 396.49 2.5000 396.48 396.47 396.46 396.45 396.44 3.7500 I 396.43 396.43 396.42 396.41 396.40 5.0000 I 396.39 396.38 396.37 396.37 396.36 6.2500 396.35 396.35 396.34 396.33 396.33 7.5000 396.32 396.32 396.31 396.30 396.30 8.7500 396.29 396.29 396.28 396.28 396.27 10.0000 I 396.27 396.27 396.26 396.26 396.25 11.2500 I 396.25 396.25 396.24 396.24 396.24 12.5000 I 396.23 396.23 396.23 396.22 396.22 13.7500 I 396.22 396.21 396.21 396.21 396.21 15.0000 396.20 396.20 396.20 396.20 396.19 16.2500 396.19 396.19 396.19 396.18 396.18 17.5000 396.18 396.18 396.18 396.17 396.17 18.7500 I 396.17 396.17 396.17 396.16 396.16 20.0000 396.16 396.16 396.16 396.15 396.15 21.2500 I 396.15 396.15 396.15 396.15 396.15 22.5000 I 396.14 396.14 396.14 396.14 396.14 23.7500 I 396.14 396.14 396.13 396.13 396.13 25.0000 396.13 396.13 396.13 396.13 396.13 26.2500 396.12 396.12 396.12 396.12 396.12 27.5000 I 396.12 396.12 396.12 396.12 396.12 28.7500 396.11 396.11 396.11 396.11 396.11 30.0000 396.11 396.11 396.11 396.11 396.11 31.2500 396.11 396.11 396.10 396.10 396.10 32.5000 396.10 396.10 396.10 396.10 396.1.0 33.7500 I 396.10 396.10 396.10 396.10 396.10 35.0000 396.10 396.09 396.09 396.09 396.09 36.2500 I 396.09 396.09 396.09 396.09 396.09 37.5000 I 396.09 396.09 396.09 396.09 396.09 38.7500 396.09 396.09 396.09 396.08 396.08 40.0000 396.08 396.08 396.08 396.08 396.08 41.2500 396.08 396.08 396.08 396.08 396.08 42.5000 I 396.08 396.08 396.08 396.08 396.08 43.7500 I 396.08 396.08 396.07 396.07 396.07 45.0000 396.07 396.07 396.07 396.07 396.07 46.2500 396.07 396.07 396.07 396.07 396.07 47.5000 396.07 396.07 396.07 396.07 396.07 48.7500 396.07 396.07 396.07 396.07 396.06 50.0000 I 396.06 396.06 396.06 396.06 396.06 51.2500 I 396.06 396.06 396.06 396.06 396.06 52.5000 396.06 396.06 396.06 396.06 396.06 53.7500 396.06 396.06 396.06 396.06 396.06 55.0000 396.06 396.06 396.06 396.06 396.05 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Time-Elev Page 8.02 Name.... MIN. DRAIN TIME FOR RUNOFF FROM FIRST 1-INCH RAINFALL File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW TIME vs. ELEVATION (ft) Time Output Time increment = .2500 hrs hrs Time on left represents time for first value in each row. --------- - 56.2500 I --------------- 396.05 ------------ 396.05 --------- 396.05 --------------- 396.05 ---------- 396.05 57.5000 396.05 396.05 396.05 396.05 396.05 58.7500 396.05 396.05 396.05 396.05 396.05 60.0000 396.05 396.05 396.05 396.05 396.05 61.2500 396.05 396.05 396.05 396.05 396.05 62.5000 I 396.05 396.05 396.05 396.05 396.04 63.7500 I 396.04 396.04 396.04 396.04 396.04 65.0000 I 396.04 396.04 396.04 396.04 396.04 66.2500 I 396.04 396.04 396.04 396.04 396.04 67.5000 396.04 396.04 396.04 396.04 396.04 68.7500 396.04 396.04 396.04 396.04 396.04 70.0000 396.04 396.04 396.04 396.04 396.04 71.2500 ( 396.04 396.04 396.04 396.04 396.04 72.5000 396.04 396.04 396.03 396.03 396.03 73.7500 I 396.03 396.03 396.03 396.03 396.03 75.0000 I 396.03 396.03 396.03 396.03 396.03 76.2500 I 396.03 396.03 396.03 396.03 396.03 77.5000 396.03 396.03 396.03 396.03 396.03 78.7500 396.03 396.03 396.03 396.03 396.03 80.0000 I 396.03 396.03 396.03 396.03 396.03 81.2500 396.03 396.03 396.03 396.03 396.03 82.5000 396.03 396.03 396.03 396.03 396.03 83.7500 396.03 396.03 396.03 396.03 396.03 85.0000 I 396.03 396.03 396.02 396.02 396.02 86.2500 396.02 396.02 396.02 396.02 396.02 87.5000 396.02 396.02 396.02 396.02 396.02 88.7500 396.02 396.02 396.02 396.02 396.02 90.0000 396.02 396.02 396.02 396.02 396.02 91.2500 396.02 396.02• 396.02 396.02 396.02 92.5000 396.02 396.02 396.02 396.02 396.02 93.7500 I 396.02 396.02 396.02 396.02 396.02 95.0000 I 396.02 396.02 396.02 396.02 396.02 96.2500 396.02 396.02 396.02 396.02 396.02 97.5000 396.02 396.02 396.02 396.02 396.02 98.7500 I 396.02 396.02 396.02 396.02 396.02 100.0000 I 396.02 396.02 396.02 396.02 396.02 101.2500 I 396.02 396.02 396.02 396.02 396.02 102.5000 396.02 396.02 396.02 396.02 396.02 103.7500 396.02 396.02 396.02 396.02 396.01 105.0000 396.01 396.01 396.01 396.01 396.01 106.2500 ( 396.01 396.01 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Time-Elev Page 8.03 Name.... MIN DRAIN TIME FOR STORAGE BELOW RISER CREST (3971) File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND_202076.PPW TIME vs. ELEVATION (ft) Time Output Time increment = .2500 hrs hrs Time on left represents time for first value in --------------- each row. ---------- ---------- .0000 --------------- 397.00 ----------- 396.98 --- 396.97 396.95 396.93 1.2500 396.91 396.90 396.88 396.86 396.85 2.5000 I 396.83 396.82 396.80 396.79 396.77 3.7500 396.76 396.74 396.73 396.71 396.70 5.0000 396.68 396.67 396.66 396.64 396.63 6.2500 396.62 396.61 396.59 396.58 396.57 7.5000 396.56 396.54 396.53 396.52 396.51 8.7500 396.50 396.49 396.48 396.47 396.46 10.0000 396.45 396.44 396.43 396.42 396.41 11.2500 396.40 396.39 396.39 396.38 396.37 12.5000 396.36 396.36 396.35 396.34 396.34 13.7500 I 396.33 396.32 396.32 396.31 396.31 15.0000 396.30 396.30 396.29 396.29 396.28 16.2500 396.28 396.27 396.27 396.26 396.26 17.5000 396.26 396.25 396.25 396.24 396.24 18.7500 I 396.24 396.23 396.23 396.23 396.22 20.0000 I 396.22 396.22 396.21 396.21 396.21 21.2500 I 396.21 396.20 396.20 396.20 396.20 22.5000 396.19 396.19 396.19 396.19 396.18 23.7500 396.18 396.18 396.18 396.18 396.17 25.0000 I 396.17 396.17 396.17 396.17 396.16 26.2500 I 396.16 396.16 396.16 396.16 396.16 27.5000 396.15 396.15 396.15 396.15 396.15 28.7500 396.15 396.14 396.14 396.14 396.14 30.0000 396.14 396.14 396.14 396.13 396.13 31.2500 396.13 396.13 396.13 396.13 396.13 32.5000 396.13 396.13 396.12 396.12 396.12 33.7500 396.12 396.12 396.12 396.12 396.12 35.0000 396.12 396.11 396.11 396.11 396.11 36.2500 396.11 396.11 396.11 396.11 396.11 37.5000 396.11 396.11 396.11 396.10 396.10 38.7500 I 396.10 396.10 396.10 396.10 396.10 40.0000 396.10 396.10 396.10 396.10 396.10 41.2500 396.10 396.10 396.10 396.09 396.09 42.5000 I 396.09 396.09 396.09 396.09 396.09 43.7500 396.09 396.09 396.09 396.09 396.09 45.0000 I 396.09 396.09 396.09 396.09 396.09 46.2500 396.08 396.08 396.08 396.08 396.08 47.5000 I 396.08 396.08 396.08 396.08 396.08 48.7500 I 396.08 396.08 396.08 396.08 396.08 50.0000 I 396.08 396.08 396.08 396.07 396.07 51.2500 I 396.07 396.07 396.07 396.07 396.07 52.5000 396.07 396.07 396.07 396.07 396.07 53.7500 I 396.07 396.07 396.07 396.07 396.07 55.0000 396.07 396.07 396.07 396.07 396.07 CORNERSTONE TERRACE PONDPACK OUTPUT FOR ARTIFICIAL WETLAND DESIGN Type.... Time-Elev Page 8.04 Name.... MIN DRAIN TIME FOR STORAGE BELOW RISER CREST (397') File.... K:\02\02-070\02076\H&H\CORNESTONE TERRACE WETLAND 202076.PPW TIME vs. ELEVATION (ft) Time Output Time increment = .2500 hrs hrs Time on left represents time for first value in --- ----- each row. ---------- --------- - 56.2500 ----------- 396.06 ---------------- 396.06 --------- 396.06 ----- -- 396.06 396.06 57.5000 396.06 396.06 396.06 396.06 396.06 58.7500 I 396.06 396.06 396.06 396.06 396.06 60.0000 396.06 396.06 396.06 396.06 396.06 61.2500 396.06 396.06 396.06 396.06 396.06 62.5000 396.05 396.05 396.05 396.05 396.05 63.7500 396.05 396.05 396.05 396.05 396.05 65.0000 396.05 396.05 396.05 396.05 396.05 66.2500 I 396.05 396.05 396.05 396.05 396.05 67.5000 396.05 396.05 396.05 396.05 396.05 68.7500 396.05 396.05 396.05 396.05 396.05 70.0000 396.04 396.04 396.04 396.04 396.04 71.2500 396.04 396.04 396.04 396.04 396.04 72.5000 I 396.04 396.04 396.04 396.04 396.04 73.7500 396.04 396.04 396.04 396.04 396.04 75.0000 396.04 396.04 396.04 396.04 396.04 76.2500 I 396.04 396.04 396.04 396.04 396.04 77.5000 396.04 396.04 396.04 396.04 396.04 78.7500 396.04 396.04 396.04 396.03 396.03 80.0000 396.03 396.03 396.03 396.03 396.03 81.2500 I 396.03 396.03 396.03 396.03 396.03 82.5000 396.03 396.03 396.03 396.03 396.03 83.7500 396.03 396.03 396.03 396.03 396.03 85.0000 ( 396.03 396.03 396.03 396.03 396.03 86.2500 396.03 396.03 396.03 396.03 396.03 87.5000 I 396.03 396.03 396.03 396.03 396.03 88.7500 396.03 396.03 396.03 396.03 396.03 90.0000 396.03 396.03 396.03 396.03 396.03 91.2500 396.03 396.03 396.03 396.03 396.02 92.5000 396.02 396.02 396.02 396.02 396.02 93.7500 I 396.02 396.02 396.02 396.02 396.02 95.0000 396.02 396.02 396.02 396.02 396.02 96.2500 396.02 396.02 396.02 396.02 396.02 97.5000 396.02 396.02 396.02 396.02 396.02 98.7500 396.02 396.02 396.02 396.02 396.02 100.0000 I 396.02 396.02 396.02 396.02 396.02 101.2500 396.02 396.02 396.02 396.02 396.02 102.5000 396.02 396.02 396.02 396.02 396.02 103.7500 396.02 396.02 396.02 396.02 396.02 105.0000 396.02 396.02 396.02 396.02 396.02 106.2500 I 396.02 396.02 396.02 396.02 396.02 107.5000 396.02 396.02 396.02 396.02 396.02 108.7500 I 396.02 396.02 396.02 396.02 396.02 110.0000 396.02 396.02 396.02 396.02 396.02 111.2500 ( 396.02 396.01 396.01 396.01 396.01 112.5000 396.01 396.01 396.01 396.01 Wetfan?s Trao.ki?.w _;.. ' Facility Name Cornerstone Park (Almo Property) see also 03-1529 Project Number 00 1530 ? Express t , Project Type purpose of construction / development I County \ ake Location UT Turkey Creek I County2 Received From APP COE ID # t 1•, Region 1 t, leigh r Received Date December 8, 2000 COE Susp Datey < Reg. Contact : S e Mitchell Sent to Region Date 12/12/2000 DCM Susp Date; = .F Rcvd Region Date TIP Number Payment Date ?:rLast Action Date January, 26, 2M] More Info Requested 8/16/2002 Amount Paid Last Action Issue General More Info Received, Payor 'Latitude (ddmmss),355311 Mitigation ? # Check # Longitude (ddmmss) 784410 COC Received Date _ Y r t. Public Notice Written Public Notice Comment Period Date; , ReceivedDatet,: Ends Date ?r Strew Class Area Are acres ) Le gth rtgth etla Permit nd Wetland" Score cart # W (acre' Stream Wetia d Subbasin s Req. (f et) ebt) e impact T Type Type Index Prim Clas a Supp. Appr R ppr. OY ON BA ?3-J O Y S N WRP Mitigation Project 1Netland Wetland Area Length Completion SUbbesin Per n- Inter- MitltionType Number Type a Class ( cres f ) , ( eat) Date ni 'I mittent Cornerstone Park - Tract 6 Worksheet for Rectangular Channel Project Description Worksheet At FES 603 Flow Element Rectangular Cha Method Manning's Form, Solve For Channel Depth Input Data Mannings Coeffio 0.050 Slope 40tl0i)0 ft/ft Bottom Width 15.00 It Discharge 4.34 cis _ ?? .. Results 1 Depth 0.12 ft J Flow Area 1.9 IF &N Wetted Perim 15.25 It p , c .. N ?- Top Width 15.00 ft ?' 5c Critical Depth 0.14 It ° Critical Slope 0.072305 ft/It r twrr: i ' Velocity 2.32 It/4 Velocity Head 0.08 it Speoft Eners 0.21 It Froude Numbi 1.16 Flow Type 3upercritloal LEVEL SPEADER DESIGN CALCULATION Design Parameters - - * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q=, .4-4 cfs D. GS Final Design Length = < feet Flow Depth = 0: Z feet Avg. Gradient = a ft.Jft. Flow = cfs Velocity = '?r?•y- .?. fps Project Englnsef: Withers & Ravenel 1:l..loomerstonelract6Wveispreader.fm2 withers & Ravenel F4 Master v6.0 [614b] 04/25/01 04:54:20 PM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 1 Page 1 of 1 FES1008 LEVEL SPEADER DESIGN CALCULATION Design Parameters • Use 2-year storm event " Assume downstream diffuse flow " Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps *4lwrringT"a1u&for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient 0.541 1 = Rainfall Intensity (5-min. Tc) in./hr. 5.76 A = Drainage Area, ac. 7.55 Q = 23.53 cfs Final Design Length = 30 feet Flow Depth = 0.1 feet Avg. Gradient = 10158 ft./ft. Flow = 23.53 cfs- Velocity = 2.5 fps I Channel Calculator Given Input Data: Shape ........................... Rectangular ` - Solving for ..................... Depth of Flow Flowrate ........................ 23.5400 cfs Slope ........................... 0.0358 ft/ft Manning's n ..................... 0.0500 Height .......................... 10000.0000 ft Bottom width .................... 30.0000 ft Computed Results: Depth ........................... 0.3093 ft Velocity 2.5370 fps Full Flowrate ................... 23.5400 cfs Flow area ....................... 9.2786 ft2 Flow perimeter .................. 30.6186 ft Hydraulic radius ................ 0.3030 ft Top width ....................... 30.0000 ft Area ............................ 9.2786 ft2 Perimeter ....................... 30.6186 ft Percent full .................... 100.0000% Page 1 TQgc.T io - I4- LEVEL SPEADER DESIGN CALCULATION HW#10 Design Parameters " Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps ;-Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-n A = Drainage Area, ac. Q = 10.01 cfs Final Design 0.488 5.76 3.56 Length = 35 feet Flow Depth = 0.166 feet Avg. Gradient = '-40.43 :lfb- -?> Flow = 22.13 cfs Velocity = 2.06 fps fa w Channel Calculator Given Input Data: Shape ......................... .. Rectangular Solving for ................... .. Depth of Flow Flowrate ...................... .. 10.0100 cfs Slope ........................... 0.1300 ft/ft Manning's n ................. .... 0.0500 Height .......................... 10000.0000 ft Bottom width ............... ..... 35.0000 ft Computed Results: Depth ....................... .... 0.1140 ft Velocity .................... .... 2.5086 fps Full Flowrate ............ ....... 10.0100 cfs Flow area ................. ...... 3.9903 ft2 Flow perimeter ......... ......... 35.2280 ft Hydraulic radius ....... ......... 0.1133 ft Top width ................. ...... 35.0000 ft Area ......................... ... 3.9903 ft2 Perimeter ................. ...... 35.2280 ft Percent full ............... ..... 100.0000% Page 1 -IF.4Cf' /0-14 FES#5 LEVEL SPEADER DESIGN CALCULATION Design Parameters * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps 4anaiggs;,n-value for downstream conditions, n 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient ?.: t' 1 = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. F040,64g. n Q = 7.34 cfs Length = Flow Depth = Avg. Gradient = Flow = Velocity = 474eet 0.18 feet 7.34 cfs ur'.?,?'13 fps., Channel Calculator Given Input Data: Shape .............. ............. Rectangular Solving for ....... .............. Depth of Flow Flowrate .......... .............. 7.3400 cfs Slope ............... ............ 0.0667 ft/ft Manning's n ..... ................ 0.0500 Height .............. ............ 10000.0000 ft Bottom width ... ................. 17.0000 ft Computed Results: Depth ........................... 0.1794 ft Velocity ........................ 2.4073 fps Full Flowrate ................ ... 7.3400 cfs Flow area ..................... .. 3.0490 ft2 Flow perimeter ............. ..... 17.3587 ft Hydraulic radius ........... ..... 0.1756 ft Top width ..................... .. 17.0000 ft Area ............................ 3.0490 f:2 Perimeter ..................... .. 17.3587 ft Percent full ................... . 100.0000% /V 0.465 5.76 2.74 c I fu V' CI ' 17/14V IL, ? v vl Page 1 WITHERS & RA VENEL Engineering & Surveying, Inc. 111 MacK enan Drive, Cary N. C. 27511.919/469-3340• FAX.• 9191467-6008 June 11, 2001 Cq"&j, jtu./ 7ior Mr. Todd St. John Division of Water Quality 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Re: Cornerstone Park DWQ Project #: 001530 Dear Mr. St. John, ki-` 1!i L rV f The Cornerstone Park development received approval from the Division of Water Quality for Neuse River Buffer Rules on January 26, 2001. The applicant was required to demonstrate that storm water would be directed to flow at non-erosive velocities across the entire protected buffers as a condition of approval. Enclosed are plans and calculations that support compliance with this condition. To achieve non-erosive velocities for storm water discharging into the protective buffet areas, we propose using level spreaders of adequate size and shape at all sources of concentrated flow. We recently obtained from you, information on level spreader design that was presented at a NCDOT Level Spreader Workshop. Using this information, we incorporated the following basic principles in our level spreader designs: 1. Concentrated flow enters the spreader through a pipe. We have tried to keep our discharges from pipes relatively low. This principle resulted in numerous discharge points rather than one or two major points of discharge. Low dischatge rates should help in successfully reaching non-erosive downstream velocities. 2. Pipe flows are retarded by the used of adequately sized riprap dissipater pads, whereby, energy is dissipated. 3. The flow is distributed throughout a level spreader, a long linear shallow trench or berm. The level spreader helps reduce concentrated flow thereby, increasing the effectiveness of the protective buffers to remove sediment, total nitrogen, and total phosphorus. Specific parameters that we used in our level spreader designs were: I . Design storms - Level spreaders were designed to treat the water quality storm similar to any other BMP (best management practices). This is often the first flush event, typically the 1-inch storm event. In lieu of using the 1-inch storm; we have chosen to use a more conservative 2-year storm event in our designs. Peak flows were determined using the rational method. 2. Design to Avoid Downstream Erosion - downstream conditions were considev?ed in determining allowable flows over a level spreader. The length of the spreader was determined by "what is" on the downstream side. Ground coverings and slopes on the downstream side of the level spreader were considered in determining allowable velocities, which is the maximum velocity of water before it causes erosion. Level spreader lengths were chosen so that velocities were not exceeded. The Continuity and Weir Equations were used to calculate the minimum level spreader length. The Cornerstone Park development has many tracts being developed with a variety of single-family and town home products. Plans and supporting calculations are enclosed for each residential tract within the project. We believe the design plans will ensure none erosive velocities of storm water into the protected buffer. Thank you in advance for your support of this project. Please feel free to call me if you have any specific questions or concerns. Sincerely, /Jer:ryJ.nsen, P.E. Project Manager Cc: Ken Jesneck Highway 70, LLC Jennifer Burdette - Soil & Environmental Consultants T94tcT aS FES #19 LEVEL SPEADER DESIGN CALCULATION Design Parameters " Use 2-year storm event E " Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. " Maximum allowable downstream velocity, Va= 2.5 fps • Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) ,i C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. 1 A = Drainage Area, ac. Q = 22.13 cfs Length = Flow Depth = Avg. Gradient = Flow = Velocity = Channel Calculator 0.166 feet x0.053 ft./ft. 22.13 cfs:* fps Given Input Data: Shape ............ ............... Rectangular Solving for ..... ................ Depth of Flow Flowrate ........ ................ 22.1300 cfs Slope ............. .............. 0.0530 ft/ft Manning's n ... .................. .1?1, Height ............ .............. 10000.0000 ft Bottom width . ................... 65.0000 ft Computed Results: Depth .......................... . 0.1656 ft Velocity ....................... . 2.0562 fps Full Flowrate ............... .... 22.1300 cfs Flow area .................... ... 10.7628 ft2 Flow perimeter ............ ...... 65.3312 ft Hydraulic radius .......... ...... 0.1647 ft Top width .................... ... 65.0000 ft Area ............................ 10.7628 ft2 Perimeter .................... ... 65.3312 ft Percent full .................. .. 100.0000% 0.582 5.76 Page 1 ?J FA['l a LEVEL SPEADER DESIGN CALCULATION FES#7 Design Parameters * Use 2-year storm event * Assume downstream diffuse flow " Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps " Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient 0.601 1 = Rainfall Intensity (5-min. Tc) in./hr. 5.76 A = Drainage Area, ac.; Q = 7.62 cfs Final Design Length = 25 feet Flow Depth = 0.14 feet Avg. Gradient = %0.07 ft./ft. Flow = 7.62 cfs Velocity = FS fps Channel Calculator Given Input Data: Shape ............ Solving for ..... Flowrate ........ Slope ............. Manning's n ... Height ............ Bottom width. Computed Results: Depth ................... Velocity ................ Full Flowrate ........ Flow area ............ Flow perimeter .... Hydraulic radius .. Top width ............. Area ..................... Perimeter ............. Percent full .......... ......... Rectangular .......... Depth of Flow .......... 7.6200 cfs ........ 0.0700 ft/ft ............ 0.0500 ........ 10000.0000 ft ............. 25.0000 ft 0.1429 ft 1330 fps 7.6200 cfs 3.5724 ft2 . 25.2858 ft ..... 0.1413 ft . 25.0000 ft 3.5724 ft2 25.2858 ft 100.0000% Lv Page 1 OF W ATFR Michael F. Easley ?O? QG Govlernor r William G. Ross, Jr.Secfetary N* Department of Environment and Natural Resolurces Kerr T. Stivens Division of Water Quality March 1, 2001 Ms. Jennifer Burdette Soil & Environmental Consultants 11010 Raven Ridge Road Raleigh, NC 27614 Dear Ms. Burdette: Re: Cornerstone Park project DWQ# 001530 Wake County Thank you for your letter of February 14, 2001 which requested removal of condition No.3 on our 401 Water Quality Certification for this project dated January 26, 2001. As you are aware the Neuse River Buffer rules require that sheetflow be established and maintained through the buffer or on-site stormwater managemeht be done to reduce nitrogen. As condition No.3 states (in part) "... unless yot can demonstrate that non-erosive sheetflow will occur from these areas and be treatod by protected stream buffers." Therefore, You must provide either 1) assurance that sheetflow will be achieved or 2) provide on-site stormwater management to mdt this condition. Our experience is that sites with large amounts of impervious surface (such as this site) have a hard time achieving sheetflow. Therefore DWQ will not remove this condition from your approval sincO it is required by the Neuse River Buffer rules. Please call me at 733-9646 with any questions or call Todd St. John at 733-9584 regarding technical questions concrarning sheetflow. incerely, Cc: DWQ Raleigh Regional Office Central Files File Copy Todd St. John Danny Cotton, Highway 70 LLC N76 Ifl R Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699-1621 Wetlands/401 Unit: (919) 733-1786 Fax: (919) 733-9959 L 40 4 e69d 999 vsQL (EOZ) Hsn 80L90 lO 'tincpajvm PBOH OPts)IM13 LE '0ul '$PO4laW p eBH ® WV I44 L910'9/ AOPBWMOI-A I*~vw J? 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'?'., slinaaa %0 go's u 00'92 awwoma 4wm WOU08 wu 00000 L pg0.0 OVIS adolS DO s0uluuRn also Indul 41d90 Ieuu840 ,oA 0/409 iuuod a,MAUUmW POLOW 340 Aint3ualaaa awala M01d 1,0Z 83d tv 49"WPOM uoll lo0lWd leuue4o aeinSuspea JOI 4GG4mPOM )Ped GUOWSWOO Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 202 Flow Element Rectangular Che Method Manning's Formi Solve For Channel Depth Input Data Manning* CoefBc 0.050 Slope 070000 ft/ft Bottom Width 50.00 It Discharge 21.05 cfs Results Depth 0,17 It Flow Area 8.7 it' Wetted Perimr 50.35 It Top Width 50.00 It Critical Depth 0.18 ft Critical Slope 0.065543 1Vft Velocity 2.43 ft/s Velocity Head 0.09 ft Speolilc Ene ft Frauds N 1.03 Flow Type 3upe2LEVEL SPEADER DESIGN CALCULATION Design Parameters * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q = 02/. D? cfs Final Design Length = Flow Depth = Avg. Gradient = Flow Velocity = ?v feet feet -ft./ft. . D cfs fps 0. S -7G .3 Project Engineert Withers & Revenel 1:1,..k oilectorslrevisionVevelspread.fm2 withers & Ravel FbwMaster 0.0 (61 4b] 04125/01 11:00:54 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 204 Flow Element Rectangular Che Method Manning's Form Solve For Channel Depth Input Data Manning* Coeffic 0.050 Slope 16-mixi ftM Bottom Width 15.00 ft Discharge 4.11 cis Results Depth 0.11 ft Flow Area 1.7 ft° Wetted Perim 15.23 ft Top Width 15.00 ft Critical Depth 0.13 ft Critical Slope 0.073122 ft/ft Velocity 2.43 Me Velocity Head 0.09 ft Specific Enerc 0.20 ft Froude Numb, 1.27 Flow Type iupercritkal ke LEVEL SPEADER DESIGN CALCULATION * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps " Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. To) in./hr. A = Drainage Area, ac. Q = cfs Final Design Length = 14' feet Flow Depth = .// feet Avg. Gradient = D. /45 ft./ft. Flow = !. it cfs velocity = -2-0 fps g? Project Engineerl Withers & Rsvenel I:\..bollectom\revleion\levelspread.fm2 Wlews i Ravens! Flo aster v6.0 [614b] 0425/01 11:04:37 AM 0 Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1686 1 Page 1 of 1 Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 401 Flow Element Rectangular Chg Method Manning's Forme Solve For Channel Depth Input Data Mannings Coefflc 0.050 Slope - 200000 tm Bottom Width 35.00 ft Discharge 6.91 cfs Results Depth 0.08 ft Flow Area 2.8 V Wetted Perim( 35.16 ft Top Width 35.00 ft Critical Depth 0.11 ft Critical Slope 0.077455 Wit Velocity 2.46 We Velocity Head 0.09 ft Specific Eners 0.17 it Froude Numb, 1.53 Flow Type Supercritical LEVEL SPEADER DESIGN CALCULATION I Design Parameters * Use 2-year storm event Assume downstream diffuse flow * Downstream conditions - woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q = G • ? cfs Final Design Length = ?1< feet Flow Depth = O$_ feet 10. Avg. Gradient = o ft./ft. Flow = -?? cfs Velocity = ?., fps 6.75' Project Engineer:' % there & Ravenel I:V..bolleotors\revislon\levelepread.fm2 Withers & Ravsnel Fiowlulaater v6.01614b] 04!25101 11:15:06 AM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Cornerstone Park Worksheet for Rectangular Channel Project Description Worksheet At FES 402 Flow Element Rectangular Chi Method Manning's Formi Solve For Channel Depth Input Data Mannings Coeffc 0.050 Slope 125000 ftM Bottom Width 30.00 ft Discharge 8.75 cfs Results Depth 0.12 ft Flow Area 3.5 W Wetted Perimr 30.23 ft Top Width 30.00 ft Critical Depth 0.14 ft Critical Slope 0.071315 tuft velocity 2.50 No Velocity Head 0.10 ft Specft Enerf 0.21 ft Froude Numb, 1.28 Flow Type 3upercritlcal LEVEL SPEADER DESIGN CALCULATION Design Parameters * Use 2-year storm event * Assume downstream diffuse flow * Downstream conditions • woods, leaf mulch, etc. * Maximum allowable downstream velocity, Va= 2.5 fps * Mannings n-value for downstream conditions, n = 0.05 Calculations Q = CIA (Rational Equation) C = Runoff Coefficient I = Rainfall Intensity (5-min. Tc) in./hr. A = Drainage Area, ac. Q = b.?-5 ?cfs Final Design Length = __?.. ?o feet Flow Depth = 6. feet Avg. Gradient = _ ) • 'Z ?ft./ft. Flow = cis Velocity = o fps o ?/ Project Engineer; Withers & Revenel 1:\...lcoilectorslrevision\levelspreed.fm2 withers 3 Ravowl Flo-kMaster v8A 1614151 05MI /O1 11:49:Oe AM ®Haested Methods, Inc. 37 Brookskie Road Weterbury, CT 06'708 USA (203)765-16W Page 1 of 1 i ` Soil & Environmental Consultan Inc. 11010 Raven Ridge Road Raleigh, North Carolina 27614 • Phone: (919) 846-5900 F x: (919) 846-9467 Web Page: www.SandEC.com FEB 1 Q February 14, 2001 Mr. John Dorney NCDENR-DWQ 2321 Crabtree Boulevards Raleigh, North Carolina 27610 / j s? RE: 401 Water Quality Certification & Neuse River Buffer Rule Approval Cornerstone Park (Almo Property) Raleigh, Wake County, North Carolina S&EC Project J#: - 00-5268 DWQ Project #: 001530 _- -NBRRO Project #: 00-155 Dear Mr. Dorney: Thank you for the prompt response to our Neuse River Buffer Rule compliance request (December 7, 2000) for the proposed Cornerstone Park. However, The response included an approval of the 401 Water Quality Certification (WQC) with additional conditions in addition to the buffer compliance approval. As indicated in the approval, the project proposes to impact 0.14 acre of wetlands and 96 linear feet of stream channel. The General Certification for Nationwide Permit 39 indicates that proposed fill or substanti modification of equal to or less than 1/3 acre of wetlands or 150 linear feet of cumulati impact for all streams for a project does not require written concurrence from the North Carolina Division of Water Quality (NC DWQ). We indicated in our application that t s was not a request for a 401 WQC and no permit application fee was paid since we did t request a 401 certification. Because the proposed project impacts do not exceed the General Certification threshol for written concurrence, a 401 WQC approval from NC DWQ is not required. Based previous projects and conversations between you and Kevin Martin of S&EC, it is our understanding that this condition applies only to 401 WQCs and does not apply to bufl compliance approvals. Therefore, the 401 WQC additional condition #3 should not ap Wetland Delineation/Permitting/Mitigation Soil/Site Evaluations On-Site Septic Systems Environmental Assess ents/Audits Neuse Basin and Watershed Buffer Evaluations Groundwater Hydrology Endangered Species Western Branch Offices: (828) 635-5820 9 (828) 312-7902 • (704) 516-3922 February 14, S&EC Project #: 00• 2 to the proposed Cornerstone Park project. We request the Neuse River Buffer Rule approval be re-issued without the 401 WQC condition #3. Also, the applicant proposes to place the required restrictions on the deeds for each individual lot (condition #1) at the time of recordation, which will exceed the 30 day limit stipulated in the condition. Therefore, we also request modification of this condition to allow the deed restrictions to be implemented at the time of recordation. Please call me at (919) 846-5900 or mobile at (919) 369-4829 to discuss the revisions c this approval as soon as possible. The client is moving forward with his current design and needs a comfort level that the plans will not require revision to include stormwater treatment. Sincerely, SOIL & ENVIRONMENTAL CONSULTANTS Jennifer A. Burdette Environmental Scientist c: Danny Colton, Highway 70 LLC Jerry Jenson, Withers & Ravenel .1 ot?- V4?o I ti I T o 1;jjj? *c January 26, 2001 Wake County DWQ Project 4: 001530 APPROVAL OF 401 Quality Certification and ADDITIONAL CONDITIONS and Neuse River Buffer Rules Highway 70 LLC 12429 Falls of the Neuse Road Wake Forest, NC 27587 Attachment Dear Sirs: You have our approval, in accordance with the attached conditions and those listed below, to impact 0.14 acres f wetlands, and 96 linear feet of streams to construct the cornerstine Park development (Almo Property), as you described in your application dated December 7, 2000. This approval is valid for the Neuse River buffer rules (15A NCAC 2B .033). In addition, you should get any other federal, state or local permits before you go ahead with your project including (but rot limited to) Sediment d Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. This approval will expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to send us a new appiication.. If the property s sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complyi g with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be equired as described in 15A NCAC 2H .0506 (h) (6) and (7). This approval shall expire when the corresponding Nationwide Permi expires or as otherwise provided in the General Certification. For this approval to be valid, you must follow the conditions li?ted in the attached certification and any additional conditions listed below. 1. Deed notifications or similar mechanisms shall be placed on all remaining jurisdictional wetlands and waters or areas within 50 feet of all streams and ponds to notify the state in order to assure compliance for future wetland and/or water im act. These mechanisms shall be put in place within 30 days of the date of this letter or the issuance of the 404 Permit (whiche er is later). 2. Stormwater shall be directed to flow at non-erosive velocities across the entire protected stream buffers. 3. An additional condition is that a final, written stormwater management plan shall be approved by this Office f r any areas exceeding-34%-rmpenuous surface before the-impacts specified in this_Certification occur, less you can dem nstratefia, rion erosive s#resiftQ will_?cuLfrom_these areas and be treated by protected stream buffer . ormwater anageme plan must include plans and specifications for stormwater management Ta-cMm-Ttemgned-W remove 85% TSS according t the most recent version of the NC DENR Stormwater Best Management Practices Manual. Also, before an permanent building is occupied at the subject site, the facilities, as approved by this Office, shall be constructed and operatic nal, and th stormwater management plan, as approved by this Office, shall be implemented. // If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must ct within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 1508 of•the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-447. This certification and its conditions are final and binding unless you ask for a hearing. i This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If + have any questions, please telephone John Domey at 919-733-9646. cc: ER'WII i 06EWNR Corps of Engineers Raleigh Field Office Raleigh DWQ Regional Office File copy Central Files Raleigh Division of Land Resources Jennifer Burdette; Soil & Environmental Consultants Todd St. John 9z ot$Q,ok " Governor Secretary Resources T. Stevens Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699-1 Wetlands/401 Unit: (919) 733-1786 Fax: (919) 733-9959 William G. (Bill) Department of Environment and N Division of c re , r . Stevens Q W' W" " 149? u I .400# ?OA 1 ?J$ >_IL&U- N. =i Q ,Iqiii? ,?. DWQ Project No.: County: Annlirant- Project Name: Date of Issuance of 401 Water Quality Certification: Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rtes, and any subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1621 Mail Service Center, Raleigh, NC, 27699-1621.This form may be returned to DWQ by the applicant, the applicant's authorized agent, or the project engineer.lt is not necessary to send certificate from all of these. - Applicant's Certification 1, , hereby state that, to the best of my abilities, due care and Iligence was used in the observation of the construction such that the construction was observed to be built withi substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: Agent's Certification 1, , hereby state that, to the best of my abilities, due care and Iligence was used in the observation of the construction such that the construction was observed to be built withi substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and s ecifications, and other supporting materials. Signature: Date: If this project was designed by a Certified Professional as a duly registered Professional (i.e., Engineet, Landscape Architect, Surveyor, ect.) in the State of North Carolina, having been authorized to observe (periodicallyi weekly, full time) the construction of the project, for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to b built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature Registration No. Date i Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699-1 21 Wetlands/401 Unit: (919) 733-1786 Fax: (919) 733-9959 ]?I NI Governor William G. (Bill) Ros Secretary Department of Environment and Natur I Resources Ke r T. Stevens Division of ater Quality MEMORANDUM TO: John Dorney Non-Discharge Branch Regional Contact: Steve Mitchell WO Supervisor: Kan ,SthuRter Date: SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS Facility Name Cornerstone Park (Almo Property) County Wake F Project Number 00 1530 County2 Recvd From APP Region Raleigh Received Date 12/8/00 Recvd By Region Project Type Certificates Stream Stream Permit Wetland Wetland Wetland Stream Class Acres Feet "- Type Type Impact Score Index Prim. Supp. Basin Req. Req. F 39 OTH OO Y _0N F_- 27-33-2 F _F NSW 30,402. 0.17 F- l2 (-_ o Y o N F_r(-f -r-F_- r-- F- FN-BR F_ O Y @ _NF_ ? F_F- F- F- I Mitigation Wetland MitigationType Type Acres Feet I _F_ I F_ (ft.) Is Wetland Rating Sheet Attached? Q Y O N Did you request more info? Q Y O N Have Project Changes/Conditions Been Discussed With Applicant? Q Y O N Is Mitigation required? Q Y O N Recommendation:Q Issue O Issue/Cond O Deny Provided by Region: Latitude (ddmmss) Longitude (ddmmss) [_nmmanf z- cc: Regional Office Page Number 1 Central Office Wetlands Tracking Protects. Facility Name Cornerstone Park (Almo Property) I County Wake Project Number 00 1530 County2_ 0Inactive Region alei Project Type purpose of ' DCM Office j Location UT Turkey Creek I COE Office alei f 4015 Last Total Total Total M4 Total Recvd Sent to Recvd Action 401 401 Mit Recvd From Date Region Region Date Last Action Acres Feet Acres Feet APP 12-8-2000112/12/2000,1 401 401 Total for Project: Inspections/ 'Violations Inspection Date Inspector Compliant Letter Type Date Sent ?OY ON + ?- 1 I 1 IV Reply Date Current St _? Inspect. i I. 16:14 FAX 919 467 6008 WITHERS & RAVENFI. S & EC 2002 T'JE} 15.40 WAKEFIELD DEVELOPERS LLO TEL:919 556 0690 P. 005 WAT4?4 O G r Michael F. Easlay Governor William G. (Bill) Ross Socrelary Department of Environment and Natural Resources Karr Y, 6tevens Division of Watof Quality January 26, 2001 Wake County DWQ Project #; 001530 APPROVAL OF 4010uallty CartlAoatlon And ADDITIONAL CONDITIONS and Neuse River Duffer Rulea Highway 70 LLD e w ?? 12426 Falls of the No= Road ? C Wake Forest, NC 27587 S o Dear $Ira; You have our approval, in accordance with the attached conditions and those listed below, 10 impact 0.14 acres of wdtlands, and 66 linear feet of streams to conslmcf the comersline Park development (Alma Property), as you described In your application dated December 7, 2000. This approval is valid for the Neuse River buffer rules (15A NCAC 2B .033). In addition, you should got any other federal, stale or local permila before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Siormwaler, Non-Dischargo and Water Supply Watershed regulations. This approval will expire whOn the accornpohying 404 or CAMA permit expires unless otherwise specified In the General Certification. This approval Is only valid for the purpose and design that you described in your application except as modified below. If you change your project, you must notify us and you may be required to sand us a new application.. It the property is sd.ld, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying kh 311 condilians. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation maybe required as described in 15A NGAC 211,0506 (h) (6) and (7). This approval shall expire when the corresponding Nationwide Permit expires or ae otherwise provided in the General Certification, For this approval to be valid, you must 10ow the conditions listed in the attached certification and any additional conditions listed below, 1. Dead notifications or similar mechanisms shall be plaoed on all remaining jurisdictional wetlands and waters or areas within 50 foot of all streams and ponds to notify the state In order to assure compliance for future wetland and/or water impact. These mechanisms shalt be put In place wiltifn 30 days of the date of this letter or the issuance of the 404 Permit (whichever is later), 2. Stormwater shall be directed to flow at non-erosive velocities across The entire protected stream buffers, 3. An additional oondition is that a final, written stormwatar management plan shall be approved by this Office for any areas exceeding 30 % impervious surface before the impacts specified in this Carilfication occur unless you can demonairkm ttiat non-srosivs sheetttow will occur from these areas and he treated by protected stream butlers. The slormwaler management plan must include plans and specifications for storrnWater management facilities designed to remove 85% TSS according to the most recent version of the NC DENA Stermwater Best Management Practices Manual. Also, before any permanent building is occupied at the subject silo, the lacililias, as approved by this Office, shall be constructed and operational, and the stormwaler management plan, as approved by this Office, shall be Implemented. If you do not accept any of the conditions of this certification, you may ask for an adjudicalory hearing, You muel acl within 60 days of the dale that you receive this latter, To ask for a hearing, send a written petition, which conforms to Chapter 1508 of the North Carolina General Statutes to the Office of Adminisirativa Hearings, P.O. Box 27447, Raloigh, N.G, 27611.7447!. This cerlitlcation and its conditions are final and binding unless you ask for a hearing. This letter complelos the review of the Division of Water Quality under Section 401 of the Clean Water Act. it you havo any questions, please telephone John Dorney at 919-733-9646, ra , r Stevens . 'o Attachment co: Corps of Engineers Raleigh Field office -flaleigh OWO Regional Office File copy Control Files Raleigh Division of !rand Resources Jennifer Burdens; Soil & Environmental Consultants Todd St, John This is a request for buffer compliance only. Therefore, a check is not enclosed. December 7, 2000 NCDENR-DWQ US Army Corps of Engineers Attn: Mr. John Dorney Attn: Ms. Amanda Jones 4401 Reedy Creek Road 6508 Falls of the Neuse Rd., Ste. 120 Raleigh, NC 27606 Raleigh, NC 27615 RE: Nationwide Permit 12 & 39/Buffer Compliance Request , Cornerstone Park (Almo Property) Raleigh, Wake County, North Carolina (LatitudelLongitude: 35°53'20" N 78°44'09" W) i1FC 8 S&EC Project #: 00-5268 DWQ Project #: 00-0782 NBRRO Project #: 00-155 Dear Mr. Dorney and Ms. Jones: On behalf of Highway 70 LLC (property owner), we hereby request authorization from the US Army Corps of Engineers to use Nationwide Permit 39 to cover permanent impacts and Nationwide 12 to cover temporary impacts to stream channels and wetlands resulting from construction of the proposed Cornerstone Park development. We also request confirmation from the NC Division of Water Quality (NC-DWQ) that the project complies with the Neuse River Basin (NRB) buffer rules. A Pre-construction Notification Application (PCN) is attached, which includes an agent authorization forth The proposed project consists of installation of infrastructure necessary to support a mixed-use development, such as roads, sanitary sewer service, and storm water detention structures. It is located in the northeast quadrant of the Ebenezer Church Road (SR 1647) and US 70 intersection excluding the existing Carmax development. Please refer to the attached map (Figure 1) for the location of the proposed project on a USGS topographic quadrangle. Wetland Delineation/Permitting/Mitigation Soil/Site Evaluations On-Site Septic Systems Environmental A,? Neuse Basin and Watershed Buffer Evaluations Groundwater Hydrology Endangered Species Western Branch Offices: (828) 635-5820 • (828) 312-7902 • (704) 516-3922 December 7, *00 S&EC Project #: 00-5168 Page 2 S&EC delineated the wetlands and jurisdictional waters present on the subject property in September 2000. A paper copy and digital file of the survey is enclosed. A mylar and two paper copies of the survey that have been signed by the surveyors have been submitted under a separate cover. Two data forms completed for the wetland delineatibn are also enclosed. We request a USACE site meeting or office determination whichever is most convenient to verify the delineation. Upon approval of the delineation, please retain the digital file for your records and return the signed mylar and one paper copy for the applicant's records. The proposed project involves road crossings of two intermittent and one perennial stream; sanitary sewer crossings of one perennial, one intermittent stream, and two wetlands; storm water structures across one perennial and one intermittent stream; and discharging fill into seven relatively small seeps and headwater forest wetlands to prepaxe residential/commercial lots within the development. The storm water detention structures are proposed to satisfy the City of Raleigh's requirement to retain and release storm water from 2- and 10-year storm events at discharge based on pre-existing zoning conditions.' Proposed road crossings and the storm water detention structures will be constructed using bottomless culverts thereby avoiding any impacts to the stream channels. The table below itemizes and provides a description of each proposed impact to waters of the USF Please refer to the attached Wetland and NRB Impact Map (7 sheets) for the location of f each impact. TYPE OF PERMANENT TEMPORARY PERMIT IMPACT JURISDICTIONAL IMPACT IMPACT VIEW NUMBER TYPE AREA (SQ. FT.) (SQ. FT.) 39 Roadway fill See 2708 0 39 Residential Seep p 1004 0 lot fill I 39 Residential Seep 60 0 Sheet lot fill 1 S it See 0 60 an ary 12 sewer Perennial stream channel 300 crossing (10' wide x 30 LE) 39 Residential Seep p 167 0 lot fill I sheet 39 Residential Seep 81 0 2 lot fill 39 Residential Seep p 998 0 lot fill II NA NA NA NA NA Residential Intermittent III 39 lot fill stream channel 576 0 (2' wide x 96 LE) December 7, 2000 S&EC Project #: 00-5268 Page 3 TYPE OF PERMANENT TEMPORA PERMIT IMPACT JURISDICTIONAL IMPACT IMPACT VIEW NUMBER TYPE AREA (SQ. FT.) (SQ. FT.) 39 Commercial Headwater 594 0 IV lot fill wetland 39 Roadway fill Headwater 333 0 wetland nitar S Seep 0 127 a y V 12 sewer Perennial stream channel 0 240 crossing (8' wide x 3011) 6,521 727 (0.150 ac.) (0.017 ac.) TOTAL 7,248 (0.166 ac.) The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and compensatory mitigatiof to offset unavoidable losses of waters of the US when impacts exceed the thresholds for notification (0.10 acre) or if a discharge causes the loss of any open waters. As mentioned above, utilizing bottomless culverts at all three of the proposed road crossings that are necessary to provide adequate access to all areas of the property and the two storm water detention structures eliminated impacts to the stream channels. Please refer to the attached 12/6/00 letter provided by Jerry Jenson of Withers & Ravenel for an explanation of the road alignments and the storm water detention structures. Because the applicant has avoided and minimized impacts through the use of bottomless culverts and will maintain vegetative buffers on Channels A, B, C, D and E as required by the Neuse River Basin (NRB) riparian buffer rule, S&EC does not believe compensatory mitigation should be required by the USACE for this project. NC-DWQ's current policy does not require written concurrence or mitigation for wetla#d impacts below 1/3 acre and stream channel impacts below 150 linear feet per tributary for sanitary sewer crossings that meet the conditions of the Water Quality Certification (WQC) issued for NWP 12. Because the cumulative, permanent impacts to wetlands, excluding stream channel impacts, (0.14 acre) are below the aforementioned threshold, the stream channel impact (96 linear feet) does not exceed 150 linear feet, and the sanitary sewer crossings meet the WQC conditions, S&EC believes that written concurrence from NC-DWQ for the WQC is not required. As noted above, Channels A, B, C, D, and E are subject to the NRB riparian buffer rulej, Please refer to the attached copy of the 11/20/00 buffer subjectivity letter provided by Bob Zarzecki of the NC DWQ. All three of the road crossings have been designed to cross the stream channels at a perpendicular angle to minimize impacts to the riparian buffer. The storm water detention structures were also similarly designed. Additionally, December 7, *0 S&EC Project #: 00-268 Page 4 each road crossing does not exceed 150 linear feet of stream channel impact or 1/3 acre of riparian buffer. It is important to note that the cumulative impacts to the riparian buffer associated with Channel C resulting from a road crossing and storm water detention structure also do not exceed 150 linear feet of stream channel or 1/3 acre of riparian buffer impact. Please refer to the attached Wetland and NRB Impact map for table of the riparian buffer impacts associated with the project and a "no practical alternative" letter prepared by Mr. Jerry Jenson of Withers & Ravenel, which explain the constraints of each road crossing and provides a description of the purpose and functioh of the storm water detention structures. Because the two sanitary sewer crossings are perpendicular and impact less than 40 linear feet of riparian buffer, they are classified as exempt activities in the NRB riparian buffer rules. Current NC-DWQ policy allows rodd crossings without mitigation if the impacts are less than or equal to 150 linear feet of i stream channel or 1 /3 of an acre of riparian buffer per tributary. Because project impacts to the riparian buffers are within these thresholds, S&EC believes that riparian buffer mitigation should not be required. Sincerely, Jennifer A. Burdette Environmental Scientist Enclosures: Two Data Forms (USACE copy only) Wetland Delineation Survey (USACE copy only) Attachments: Pre-construction (PCN) notification form Site Location Map (Figure 1) Wetland & NRB Impact Maps (7 Sheets) Agent Authorization Form Withers & Ravenel "No Practical Alternative" letter (12/6/00) NC DWQ "Buffer Subjectivity" letter (11/20/00) c: Danny Colton, Highway 70 LLC Jerry Jenson, Withers & Ravenel DWQ Project #: 00-0782 TRIAGE INFORMATION Cornerstone Park (Almo Property) Highway 70 LLC Project Type sanitary sewer crossings, road crossings, & lot fill Permit Type 12 & 14 Stream Name UT to Turkey Creek River Basin (#) 030402 Stream Index (#) 27-33-2 00153 Stream Class C NSW Wetland and Water Impacts Permanent Temporary Type of Impact Impact Jurisdictional Area (sq. ft.) (sq. ft.) See 5018 187 Perennial stream 0 540 channel Intermittent stream channel 576 0 2'widex96U. Headwater wetland 927 0 6,521 727 Total (0.150 ac.) (0.017 ac.) 7,248 (0.166 ac.) 001 53o DWQ ID: Corps Action ID: Nationwide Permit Requested (Provide Nationwide Permit ft 12 & 39 Pre-Construction Notification Application For Nationwide Permits that Require: 1) Notification to the Corps of Engineers 2) Application for Section 401 Certification 3) Coordination with the NC Division of Coastal Management Send the original and (1) copy of this completed form to the appropriate field offifie of the Corps of Engineers (see agency addresses sheet). Seven (7) copies should be slent to the NC Division of Environmental Management (see agency addresses sheet). PLEASE PRINT. 1. Owner's Name: 2. Mailing Address: Subdivision Name: City: Wake Forest State: NC Zip Code: Project location address, including subdivision name (if different from mailing above): The proposed project will be constructed on currently undevelop? vronerty that does not have a specific address. 3) Telephone Number (Home): NA (Work): 919/556-4310 4) If applicable, agent's name or responsible corporate official, address, phone number: Soil & Environmental Consultants, Inc Phone: (919) 846-5900 11010 Raven Ridge Road Fax: (919) 846-9467 i Raleigh, NC 27614 5. Location of work (provide a map, preferable a copy of USGS topographic aerial photograph with scale): County: Wake 70 LLC 12429 Falls of the Neuse Road Nearest town or city: Raleigh or Specific Location (include road numbers, landmarks, etc.): The proposed proiect, Cornerstone Park, consists of 104-acre mixed-use situated in the northeast corner of the intersection of US 70 Ebenezer Church Road (SR 1647) excluding the existing Carmax developmett. 6. Impacted or nearest stream/ river: Unnamed tributary of Turkey Creek River Basin: Neuse 7a. Is project located near water classified as trout, tidal saltwater (SA), high qu4lity waters (HQW), outstanding resource waters (ORW), water supply (WS-1 or WS- II)? YES ? NO ? If yes, explain: 7b. Is the project is located within a North Carolina division of coastal management area of environmental concern (AEC)? YES ? NO 0 7c. If the project is located within a coastal county (see page 7 for list of coastal counties), what is the land use plan (LUP) designation? 8a. Have any Section 404 permits been previously requested for use on this property? YES ? NO ? If yes, provide Action ID number of pervious permit and any additional information (including photocopy of 401 certification). Collect r roads R002 and R003 connect two existing state roads and were permitted asa single and complete project separate from Cornerstone Park (Action ID #: 200120155). 8b. Are additional permit requests expected for this property in the future? YES ? NO ? If yes, describe anticipated work: 9a. Estimated total number of acres in tract of land: 104 9b. Estimated total number or acres of wetlands located on project site: 0:19 10a. Number of acres of wetlands' impacted by the proposed project bye: Filling: Flooding: 0.150 Excavation: 0.017 Other: Drainage: Total acres to be impacted: 0.166 ' The acreages reported above also include stream channel impacts. z Please refer to the cover letter to which this application is attached for more detailed information regarding the impacts. 10b. (1) Stream channel to be impacted by the proposed project (if relocated, provide distance both before and after relocation): Length before 96' After: Width Before (based on normal high water contours) Width After: Average depth before: After: 2' (2) Stream channel impacts will result from: (check all that apply) Open channel relocation: ? Placement of pipe in channel: p Channel Excavation: ? Construction of a Dam/Flooding: ? Other: 11. If construction of a pond is proposed, what is the size of the watershed draining to the pond? NA What is the expected pond surface area? NA 12. Description of proposed work including discussion of type of mechanical equipment to be used (attach plans 81/2" x 11" drawings only): The project consists of construction of the necessary infrastructure, such as access roads and sanitary sewer service, to support a mixed-use development using': conventional heav, 13. Purpose of proposed work: The purpose of the project is to construct a mixed- use development to provide office space and residential housing for the City of Raliegh. Please also refer to the 12/ 6/ 00 letter prepared by Jerry Jenson of Withers & Ravenel for an explanation of the road alignments. E w k 14. State reasons why it is believed that this activity must be carried out in wetlands (include any measures taken to minimize wetland impacts): Impacts to stream channels resulting from road crossings and construction of storm water detention structures were minimized by employing bottomless culverts, which result in no impact to the jurisdictional area. The residential and commercial lot fills are required to provide the adequate amount of space fad residential and commercial development of the particular lots. Specifically, avoiding the linear wetland shown on View IV would impact a significant alEount of highly valuable commercial property. Please also refer to the attached 12? 6/ 00 letter prepared by Jerry Jenson of Withers & Ravenel for the project's consistency with the Raleigh's zoning and thoroughfare plan. 15. You are required to contact the U.S. Fish and Wildlife Service (USFWS) and/or National Marine Fisheries Service (NMFS) (see agency addresses sheet) regarding the presence of any federally listed or proposed for listing endangered or threatened species or critical habitat in the permit area that may be affected by the proposed project. Date contacted: (attach responses from these agencies). Performed by USACE 16. You are required to contact the state historic preservation officer (SHPO) (see agency address sheet) regarding the presence of historic properties in the permit area which may be affected by the proposed project. Date contacted: Performed by USACE 17. Does the project involve an expenditure of public funds or the use of public (state) land? YES ? NO ? If no, go to 18. a. If yes, does the project require preparation of an environmental document pursuant to the requirements of the North Carolina Environmental Polity Act? YES ? NO ? b. If yes, has the document been reviewed through the North Carolina Department of Administration State Clearinghouse? YES ? NO ? If answer to 17b is YES, then submit appropriate documentation from the stare clearinghouse to division of environmental management regarding compliance with the North Carolina Environmental Policy Act. Questions regarding the State Clearinghouse review process should be directed to Ms. Chrys Baggett, Director State Clearinghouse, North Carolina Department of Administration, 116 West Jones Street, Raleigh, North Carolina 27603-8003, telephone (919) 733-6369. 18. The following items should be included with this application if proposed activity involves the discharge of excavated or fill material into wetlands: a. Wetland delineation map showing all wetlands, streams, lakes and ponds on the property (for Nationwide Permit numbers 14, 18, 21, 26, 29 and 38)a All streams (intermittent and permanent) on the property must be shown on the map. Map scales should be 1 inch equals 50 feet or 1 inch equals 100 feeet or their equivalent. S&EC's wetland delineation has been survey and a paper copy is attached. A mylar and paper copies of the surveyed stamped by the surveyor will be submitted directly by Withers & Ravenel under a separate cover for USACE "sign-off." b. If available, representative photograph of wetlands to be impacted by Oroject. C. If delineation was performed by a consultant, include all data sheets relevant to the placement of the delineation line. Data forms completed during the wetland delineation are attached. d. Attach a copy of the stormwater management plan, if required. e. What is land used of surrounding property? Commercial/Resideiiial f. If applicable, what is proposed method of sewage disposal? City of Raleigh sanitary sewer system g. Signed and dated agent authorization letter, if applicable. Attached NOTE: Wetlands or Waters of the U.S. may not be impacted prior to: 1. Issuance of a Section 404 Corps of Engineers Permit, 2. Either the issuance or waiver of a 401 Division of Environmental Management (Water Quality) certification, and 3. (in the twenty coastal counties only) A letter from the North Carolina Division of Coastal Management stating the proposed activity is consistent with the North Carolina Coastal Management program. CZ , l 2 OD per's/ gent Signature ate [Agent's signature valid only if Agent Authorization Letter from the owner is provided (18 g.0)] -- R1 03 50 BAYLEAF, NC 1993 1 NIMA 52551 NW-SERIES VSA2 , l O :? ? - -,I• s? zs i ¦ O t O 1 1 I c? 0 M w w J29 0?_ RALEIGH WEST, N. C. 1 n SW/4 RALEIGH 15' QUADRANGLE t 1 , ?'0 35078-G6-TF-024 j PHOTOINSPECTED 1988 1968 P PHOTOREVIEVIS ED 187 4 J\ c ? ??? DMA 5255 I SW-SERIES 'V842 SCALE 1:24 000 7 0 sae 1o0D o I= 2DOG 3000 4000 am a000 7000 Mw a o t la o?>en CONTOUR INTERVAL 10 FEET NATIONAL OEOOEM %43M .AL DAMN OF I= PAW= No. SCALE SHM TnM 00-5268 PROJECT MGR, FIE FIGURES 1 _ Q11W, Inc. Soil W Environmental VO u1? EH !IA LOCATION mAp ORAWN BY LO N, Iwwu..>n?ua.? 1d W Nw&CKdMTM1w?wa .m?P N6Jl01 Raep1?M6-9167 nan wow / I -\ \ / P9 IAMI T WEnAND IMACTS SU111MiY TABLE VIEW CNMM WEBAID ------ ago (t4 IL) - - „ i o M s0 06 0 0 LL27 - v o 0 Tar D6 60 SM FT. (0.15Deces? - ------------------------ SEE DETAIL CHANNEL , 1616EItl B[ff8iMgCTSMORYTABLE I VIEW 7' or _ D ?., VIEW CKMOR IDLE •I Z01E2 TOTAL y i I as 7,111 1 DN o11 t SEE DETAIL 26 i,Tb3 1B° oms VIEW 'V' _ - 1 112 5736 Z19 o16 o 0 o D \ IV p ? w ? ? // ? \ me 4?M 018 CHANNEL ' ` ? ? \ \ v 26 zm 271 am E CHANNEL I ?7? 14 ' r h' C - - / \ vve lo 'E DEN Mu Ac VIEW II' CHANNEL - - % /? ;i/p? 6 ???\\ CHANNEL awma SEE DETAIL 8004 VIEW III ; ' - - f r !\ //?/ // r r ' I n I PREMUSLY PERMITTED AS d SEE DET EBF ?CaOR rx+ AND us 70 ROADS _ I n(L VIEW IV ? I I i N I ' /i ?? owwoom // ?? / // r ? w s s m / / 1 IW 160 IL / E+ W a a az? 0 x azz x A °Wz ?a PQ E, P? 0 00 0 0 i Q? x V o n` 0 -It u/ 0 M M 0 06 D7 ''nn M Ln PV 1 N Q) r rlo N U •? W ?W .? o Z Z LLJ Y U Q STORM WATER DETENTION STRUCTURE IMPACT ZONE 1 1,258 SF ZONE 2 199 SF CHANNEL 25 LF CULVERT TO ALLOW FLOW CONCRETE WEIR v J CLEARINGS LIMITS RESIDENTIAL LOT FILL WETLAND IMPACT WETLAND AREA = 167 SF RESIDENTIAL LOT FILL\ f 1urTi nnln 114DArr WETLAND AREA = 81 SF 1 MATCH 0 HEET 1 d RESIDENTIAL LOT FILL WETLAND IMPACT WETLAND AREA = 998 SF O C T? r I W C 'I n n N 0 h w 0 u U G ti N LLJ E- G, W ? a O ?aa q o?21 x? XEz azA as Wd za x 0 Do 0 0 t r x U a n`?o Q) M CY) `V q o) 0 C? co N C) Q/ cu rl o H U w W ? Z Z Y Q i SEE'PICALI DETAIL 'A' RESIDENTIAL LOT FILL WETLAND IMPACT LINEAR WETLAND AREA = 60 SF NRB CHANNEL IMPACT ZONE 1 7,411 SF ZONE 2 1,649 SF CHANNEL 86 LF CUT/FILE ROADWAY FILL, WETLAND IMPACT WETLAND AREA = 2708 SF 1 MATCH TO SHEET 2 1 LESS I_B_6T'T0__ CULVE T I ? /1 1 ,ems'' RESIDENTIAL LOT FILL, WETLAND IMPACT WETLAND AREA = 1004 SF W Lij rA U \ \? co Z Q) k CL o? LAJ ZE ' \ \\ \ \ Z C7 WETLAND AREA (TYPICAL) SANITARY SEWER CROSSING TEMPORARY WETLAND IMPACT WETLAND AREA = 68 SF CHANNEL AREA = 300 SF VIEW W 1" = 50' Z H x w a a oo? a Z 2 i4 _?z °z cn W a? zaE, O U O O I r U d I W x V o n`? O W a M I ?;>m U 0 ?ro a co ao Lo l!1 •? N ? Z n 1 r?? r W M o •N U ?w Q z Z LLJ Y U Q ROADWAY FILL WETLAND IMPACT CHANNEL 0 LF NRB CHANNEL IMPACT ZONE 1 8, 735 SF ZONE 2 2,456 Sr CHANNEL 112 LF R CID C rri 1 CUT/FILL L 25 50 1 RESIDENTIAL LOT FILL, \ WETLAND IMPACT \ CHANNEL = 96 LF 576 S( \ I VIEW 'Ill ' 1 " = 50' 50 R? Withers & Ravenel Engineering and Surveying, Inc. ONSULTINC ENGINEERS r 111 MACKENAN DRIVE, Cary NC 27511 Phone: 919-469-3340 Fax: 919-467-601 e N- 100 1 inch = 50' ft. i CORNERSTONE' PARK, ALMO PROPERTY RALEIGH, 'NORTH CAROLINA WETLAND & NRB IMPACT MAP 200 COMMERCIAL LOT FILL, ? \ WETLAND IMPACT \ \ LINEAR WETLAND AREA = 594 SF ROADWAY FILL, :.= - - - - _ - _- _- _ ___ _-_ __ _ ____ W = ----------- - --------- - ---------------- ETLAND IMPACT __ = = _ = = _=--_-__--- LINEAR WETLAND AREA 333 SF --- ------------- HANNEL = 0 LF - - - - =" _ - == C =- - = 0 ---------------------- NRB CHANNEL IMPACT - BOTTOMLESS ZONE 1 6,445 SF ___ CULVERT c n, / ZONE 2 4,955 SF CHANNEL 47 LF A CUT \ /Fl(( LINE VIEW 'IV' 1 " = 50' 8 N o u x o .? n °w ILr• NLy 1+1 W a a a2? OOV ?aa azz x A a za? x 0 U DO a a r a I W x U? rr--11 ? o cll, QE 'T m V1 C 0 ?ba co M n vl N z Q .?` > / W qo •ti U Li w C) o z Q z Y U Q STORM WATER DETENTION STRUCTURE IMPACT I I CONCR TE ZONE 1 2,088 SF WEIR ZONE 2 274 SF \ CHANNEL 25 LF SANITARY SEWER CROSSING TEMPORARY WETLAND IMPACT z ..; . WETLAND AREA = 127 SF CHANNEL AREA = 240 SF SEE TYPICAL \ \ DETAIL 'A' L SARI NG \ L TS \ BOTTOMLESS \ \ CULVERT TO \ ALLOW CONTINUOUS \ FLOW. 1 VIEW 'V' 1 50' TYPICAL DETAIL 'A' BOTTOMLESS CULVERT FOOTING . _........ _. .. ...._ ...., ..., ... GROUND ainL- STORM WATER DETENTION STRUCTURE TYPICAL DETAIL N.T.S. 50 0 25 50 Withers & Ra ve ne l Engineering and Surveying, Inc. CONSULTING ENGINEERS 111 MACKENAN DRIVE. Cary NC 27511 Phone: 919-469-3340 Fax: 919-467-60C 100 1 inch = 50 ft. CORNERSTONE PARK, ALMO PROPERTY RALEIGH, NORTH CAROLINA WETLAND & NRB IMPACT MAP 200 DEC.-05'00(TUE) 15:35 WAKEFIELD DEVELOPERS LLC TEL:919 556 0690 P. 002 .son & Environmental Cons t=ts e 11010 Raven Ridge Road Rolaigh. North Carolina 27014 s phone; (919) 846-5900 • Fax: (19) 846-9467 Web Page: www.$anc=.com AGENT AUTHOMA'TION FORM All Blnnks Td Be Filled In B The Current Landowner Name:. 'Hig'h 70 LLC; Addros- 2429 ec Road ke FQreet. lriarth Catalina 27567 55,54310 Project Ndaute%Degcription: CgMtratgng Par fAlirta Psoperty Date: 12 4/Op Tlie Dep ment of the Army U.S. A CgrpA of Engineers, Wilrnington Motrict P.O'. Bo 890 Wilwingpn, NC 20402 Attn: S .k1 W La ones RR: %9 Related Consulting and Permitting To Whco It May Concvrn: I, the en!' ro owner, hereby designate and- authorize 54 A? Environmen. Cunsultnnjs, Inc. to art in behalf as my agent in the prcKessing of permit appliddtiOM, tQ fumish:upOn request supple , ' Wormatibn in support.of applications, etc, from thle day forward. The 44th day of bet 2000 _ This-.noi fieation supersedes any previous correspondence concerning the agent for-this project.] 1W07'1 • '1*1M-4uthQ.d=tiM for lability and-, rdeitiitmg rourte8y reasane, is vtli?i orjy f4* ?o1?slc ...tRrEt officials ba ntert the prop' when'acaa paned by S&EC sit&M You sbould c4 -S&EC to. tiirr;a a a'afM mecCtll * prWr to visfting the Cite. u?'dl c . r Name /rdpert,Signature' Frint?:PtPpetY Owner s tx_ . jol?11,Darne?' or: Mb. Jennifer -A. Buidette:. N11 10E NR w DWQk Water Quality Plaluw:tg . 'SoA & EnvironxnianLd Cons-41tot6, Irm 1 "y-Creek Road igh. NC 27f,07 b1z* no" auth f4m4oc wbpt?il it wmicAmenniiinw oss6on SaWiteEvsluaUms. pri-site Sepgo,•Syetcmx Bevkora»enrdAe•aaetr ?sl,AUdirs eeI N"w lip an and watarshed Buffer F.valgadone Oroundwatar-Hydeology l=.na, gaird Specice WITHERS & RA VENEL Engineering & Surveying, Inc. 111 MacKenan Drive, Cary N. C. 27511.9191469-3340•FAX.•9191467-6008 December 6, 2000 Mr. John Dorney NCDENR-DWQ 4401 Reedy Creek Road Raleigh, NC 27607 Mr. Todd Tugwell USACE 6508 Falls of Neuse Road, Suite 120 Raleigh, NC 27615 Re: Cornerstone Park Neuse River Riparian Buffer DWQ Project #00-0072 NBRRO Project #00-155 Dear Mr. Dorney and Mr. Tugwell, On behalf Highway 70, LLC (property owner), we are a seeking authorization to impact small areas of Neuse River Basin buffers, stream channels and wetlands in order to accommodate a 104-acre mixed-use planned development named Cornerstone P k. This proposed development is located in Raleigh, North Carolina and is more specifically located in the northeast corner of the US Highway 70 at Ebenezer Church Read intersection. We are seeking to impact three (3) stream channel areas for roadway ind driveway access in which Neuse River Buffer rules apply. We believe that there are "tlo Practical Alternatives" available, whereby, the impacts to the buffers can be avoided. An explanation of the impact areas is provided in the proceeding paragraphs. Collector Street R004 Crossing Several years ago the City of Raleigh adopted the US Highway 70 West Corridor Plan. A copy of the corridor plan's transportation system map is attached. The netwprk of collector streets specified in the plan are classified as arterial helpers and are intended to provide circulation and relief of traffic congestion along US Highway 70 and other congested roads in the region. The proposed collector roadway, identified on the project map as Street R004, is designated on the US Highway 70 West Corridor Plan. The alignment of the collector roadway is consistent with the US 70 High ay West Corridor Plan. It is necessary for Street R004 to cross the Neuse River Rip ian Buffer in order to satisfy the City of Raleigh's requirement and objective in comple ing the collector street system as illustrated on the US Highway 70 West Corridor P an. Street R004 will eventually be extended to the north and the roadway will serve hundreds I: AD\II\ I .?•r? 11'RI?I PIMJI?.CIS ( orncretoiw Viw'120100.JD& ITdo; of acres of land. There are no other practical alternative alignments available since t?e stream buffer bisects the Cornerstone Park project and crossing the buffer is inevitable 4n order to access properties to the north. Residential Street R005 A residential type roadway referred to as Street R005 on the project map ! is planned to provide access to two large tracts of land located in the northeast portion 'Of the Cornerstone Park project. A stream channel separates tracts 10 and 11. Tract 11 i3l a land locked parcel and there are no existing public roadways adjacent to the tract !to provide access. Street R005 has been planned to extend into tract 11 for purposes Eof ingress and egress to the land. The roadway will also serve as public street access for undeveloped properties located immediately north and south of tract 11. The extensibn of Street R005 is also a requirement of the City of Raleigh; since their zoning and ste plan ordinances do not allow parcels to be developed without public street fronta e. Therefore, we do not believe there are any practical alternatives available in extending a public street to Tract 11 since the stream bisects the Cornerstone Project and crossing t?e buffer unavoidable. Driveway Access to Tract 2 A major driveway access point is proposed from Street R002 into Tract 2, which is expected serve significant amounts of commercial and retail type land uses. The driveway as shown, will cross the upper most terminus point of a stream channel and Neuse River Basin buffer. A rezoning of the subject property was conditionally approved by the City of Raleigh in 1994. One of the conditions prescribed in the rezoning case was the location of the driveway access for Tract 2. A major traf#c- carrying driveway serving Tract 2 was to be located on Street R002 and align directly opposite Street R004, as shown on the project map. The premise of this condition wa? to allow for all major traffic movements within the development, including Tract 2, to oc?ur at this major intersection. Aligning the driveway opposite Street R004 will ensure that traffic movements can occur safely and efficiently within the project without resulting in overlapping turning movement conflicts or confusion. The alignment of the driveway has been careful considered so that impacts to the Neuse River Basin buffer can be minimized. Extreme curvature of the drivewa?` s alignment has been introduced to ensure minimization of impacts. In particular, only the uppermost terminus point of the buffer will be impacted. Storm Water Detention Structures Storm water management will be provided commitments for this property. The project muss 1; ADMI\ [ :scrs TFIRIZ}-?IT01I;CTS Conrrstom \Iisc120i00-11) & ?I?I.doc within the project site due to zoning detain the 2 & 10-year storm evbnt within the site and release discharges based on pre-existing zoning conditions. Two storm water detention structures are planned within Neuse River Riparian buffers. Ono is located within the northeastern portion of the site and the other is located toward the eastern property line in the middle of the site. These structures will consist of a bottomless culvert spanning the stream channel to allow pre-existing base flows to p4ss without impedance or detention. A concrete or brick weir is to be constructed perpendicular to the channel around the bottomless culvert to facilitate storage of post- development runoff. Storm water runoff will not be allowed to be permanently retained within the buffers and should dissipate very quickly after each storm event. We believe this approach is much more appealing than placing storm water detention ponds on each of the eleven parcels planned for this development, whereby, resulting in one homeowners association managing the storm water detention structures on the site, in lieu of several. To conclude, the proposed roadways and driveway as shown on the project map, are of significant importance not only for our project, but they provide area-wide benefits as well. The roadways will ensure that adequate transportation facilities will be provided and traffic congestion on US Highway 70 and area-wide roadways can be reduced. We hope this letter provides adequate explanation regarding our desires to impact solne stream buffer areas with as least disruption as possible. Sincerely, WITHERS & RAVENEL ENGINEERING & SURVEYING Jerry J. Jensen, PE Project Manager Enclosures: Project Map US Highway 70 West Corridor Map Cc: Danny Colton - Highway 70, LLC Jennifer Burdette - S&EC, Inc. Kevin Martin - S&EC, Inc. I \W, H\ 1 "I" JI RRl ITOP (IS( ,rn'rl Ion. \Ii I-0I00.11)S_'I I do': w-526? State of North Carolina Department of Environment and Natural Resou Division of Water Quality James B. Hunt, Jr., Gove Bill Holman, Secretary Kerr T. Stevens, Director NO`: ' 8 Ii! - ° -' NORTH CAROLINA DEPARTM ENVIRONMENT AND NATURAL RI November 20, DWQ Project # 00-0782; NBRRO Project # 01 Wake C Soil & Environmental Consultants, Inc. C/o Ms. Jennifer Burdette 11010 Raven Ridge Road Raleigh, NC 27614 Re: Neuse River Riparian Buffer Confirmation; Almo Property; Turkey Creek [03-04-02; 27-33-1-21 S&EC, Inc. Project # 00-5268 Dear Mr. Burdette, On November 17, 2000, I met with you at the subject property consisting of approximately 96 acres lodated east of Ebenezer Church Road (SR 1647) and northeast of US Route 70 (Glenwood Avenue) excludingthe Carmax Property, Wake County. The purpose of this meeting was to determine the applicability of a stream feature located on the property to the Neuse River Riparian Buffer Protection Regulations (15A NCAC 2B .0233). This was the second buffer confirmation meeting held on the property (DWQ 6/14 As a result of this meeting, in addition to information provided within your letter dated 11/17/00, it wash determined that the stream feature "CHA" indicated on the attached "Almo Property / S&EC Project Nb• 00-5268" map provided as an attachment to your letter dated 11/17/00 and initialed by me on 11/20/00 is subject to 15A NCAC 2B .0233. The map indicates streams (CHA to CHD), including the approximate location of the start of two streams (NRB 101 & NRB301), subject to the buffer regulations as confirmed and flagged in the field on 6/14/00. These streams were reviewed during the site meeting conducted on 6/6/00. It was later determined that stream feature "CHA" was indicated as extending further up the drainage and within the property on the USGS topo and Soil Survey. This led to the site meeting conducted on 11/17/00. It was determined during this meeting that "CHA" begins at the culvert below khe stormwater management structure located on the CarMax Site. This office recommends that these strejms be properly located and identified prior to any site design to ensure compliance with 15A NCAC 2B .033. This letter only addresses the applicability of 15A NCAC 2B .0233(3) and does not authorize any activity within the protected buffers. Thank you for your attention to this matter and if this office can be of any!, assistance or if you have additional questions, please do not hesitate to contact me at 733-9726 or Mr. Steve Mitchell at 571-4700. Sincerel , 6Zar7ecki Environmental Specialist / 401 Certification Unit Cc: Steve Mitchell / Raleigh Regional Office Division of Land Quality / Raleigh Regional Office File copy Non-Discharge Branch Wetlands/401 Unit 1621 Mail Service Center Raleigh, North Carolina 27669 1621 Telephone 919-733-1786 FAX # 733-9959 An Equal Opportunity Affirmative Action Employer 501/v recycled/ 10% post consumer paper I I I ((111 111111111111111 NRB STARTS @ r/ END OF CULVERT CH A 7 Soil 6 Environmental Consultants, inc. M11010 Raven Ridge Road. Raleigh. North Carolina 27614 / Phone (919) 846-5900 Fax: (919) 846-9467 Project: Almo Property / S&EC Proiect No. 00-5268 LEGEND: r r? = Streams potentially subject to Neuie [fiver Riparian Buffers ?i ?- O? SToLMA?KidK '?D&W ?' • ?\ NRB101 ® = Potential start points of batten (Should be confirmed by DWQ) ps and databases are public information supplied various government agencies. The author and/or MapVUE f the software program ore in no way sole or liable for the information depicted 15:37 Inquiries concerning the data should be 0 278 557 835 114 FIGURE 3 - SITE AP JuN 8ii. 2000 to the appropriate government agency. Scale in Feet ? eV'SZQ 0J,71611 r ' Biological Reconnaissance Form # BIOLOGICAL RECONNAISANCE FORM Send to Dave Penrose 401/Wetlands Unit, Division of Water Quality 1621 Mail Services Center Raleigh, North Carolina 27699-1621 e-mail Dave.Penrose@NCmail.net, FAX 919/733-9959 n??O a) Location Stream Name:UT Turkey Creek Receiving Waterbody:Crabtree Creek G Location/Road:SR 1647 County:Wake Date:7Aug Regional Office:Ralei& Basin:New Subbasin: Latitude/Longitude:355313,784419 Stream Index #: Ecoregion:Piedmont Rosgen Class: Observers:DP,BZ, J B urdette USGS Quad Sheet:Bay Leaf Notes (attach photograph or drawing on the back of this form):Almo Property. This appears to be intermittent. ! Sent specimen of Cordulegaster to Ken Tennessen (TVA) for species ID, but he noted that this are probably C. oblilua which can be found in intermittent systems. b) Habitat Primary Adjacent Land Use:Forest Riparian Zone Characteristics: Forest Stream Width: l foot Flow Conditions:pooled Stream Order:I or less Stream Permanence Characteristics, Rating (if relevant):Could c) Biology Benthic Macroinvertebrate Taxa:mostly beetles, some Cordulegaster Amphipoda: ® Isopoda: ? Decapoda: ? Chironomidae: E Oligochaeta: ? Mollusca: ? Ephemeroptera: ? Plecoptera: ? Trichoptera: ? Coleoptera: ® Other Diptera: ? Fish and Salamander Taxa:none noted Other Observations (i.e. Presence of Iron Oxidizing Bacteria):none noted i r Biological Reconnaissance Form # BIOLOGICAL RECONNAISANCE FORM Send to Dave Penrose 401/Wedands Unit, Division of Water Quality 1621 Mail Services Center Raleigh, North Carolina 27699-1621 e-mail Dave.Penrose@NCmail.net, FAX 919/733-9959 a) Location Stream Name:UT Turkey Creek Receiving Waterbody:Crabtree Location/Road:SR 1647 County:Wake Date:7Aug Regional Office:Raleigh i Basin:NEU Subbasin: Latitude/Longitude:355319,784412 Stream Index #: ; Ecoregion:Piedmont 7 1 Rosgen Class: Observers:DP,BZ, J Burdette USGS Quad Sheet:BayL of Notes (attach photograph or drawing on the back of this form):This is the perennial stream that receices Almo drains the entire property. i i and b) Habitat Primary Adjacent Land Use:Forest I Riparian Zone Characteristics:Forest ! Stream Width: 1-2 feet Flow Conditions: 1-2 fps Stream Order:) Stream Permanence Characteristics, Rating (if relevant):Good riffle/pool sequence and bed/bank characteristic suggesting perennial system c) Biology Benthic Macroinvertebrate Taxa:Crayfish very abundant, Odonata Amphipoda: ® Isopoda: ? Decapoda: ® Chironomidae: ? Oligochaeta: ® Mollusca: ? ` Ephemeroptera: ? Plecoptera: ? Trichoptera: ? Coleoptera: ® Other Diptera: ? I Fish and Salamander Taxa:Bob noted that he has seen fish in some of the lower pools. Did find a salamander as well. I Other Observations (i.e. Presence of Iron Oxidizing Bacteria):None noted Biological Reconnaissance Form # BIOLOGICAL RECONNAISANCE FORM Send to Dave Penrose 401/Wetlands Unit, Division of Water Quality 1621 Mail Services Center Raleigh, North Carolina 27699-1621 e-mail Dave. Penrose L?NCmai1.net, FAX 919/733-9959 a) Location Stream Name:UT Turkey Creek Receiving Waterbody:Crabtree Location/Road:SR 1647 County:Wake Date:7 Aug Regional Office: Raleigh; Basin:NEU = ubbasin: Latitude/Longitude:355301,784418 Stream Index #: i Ecoregion:Piedmont Rosgen Class: Observers:DP, BZ, J Burdette USGS Quad Sheet.Bay eaf Notes (attach photograph or drawing on the back of this form):This small perennial stream is located near the . ater Garden off NC 70. The site is located below a pond which may affect the benthic fauna. b) Habitat Primary Adjacent Land Use:forest Riparian Zone Characteristics: forest Stream Width:2-3 feet Flow Conditions:2 cfs Stream Order: I Stream Permanence Characteristics, Rating (if relevant):Good riffle/pool characteristics, good rubble and cobble substrate and bed/bank features. c) Biology Benthic Macroinvertebrate Taxa:Hydropsychidae, Ectopria and Helichus, Megaloptera (2 genera), Caloptery? Amphipoda: ? Isopoda: ? Decapoda: ® Chironomidae: ? Oligochaeta: ? Mollusca: ? Ephemeroptera: ? Plecoptera: ? Trichoptera: ? Coleoptera: ® Other Diptera: ? Fish and Salamander Taxa:none noted Other Observations (i.e. Presence of Iron Oxidizing Bacteria):none noted 55' _r 111 ,?? „? ! ?..- r/i'• ?..?? _1??? ? ??'? -;:-;?---°?'? , _ 1 ) ?? `'?/?1 ? `1? ,? ? ;'• • ?, X76 r' l? ",,,.._.'`'^a, +,,. t '`: Ate'" ?' ? _,?" ? ?? ? -,rr __\ 1 ? "f - ri / • ?.....?, r X975 fi-? . `t<,?? ?^-?, J '-,"5? ? - ' 1? .? `?? Its ,? ,, ? ''.?? ?- - '?`1• ? ??1 ?"?`? ?r, 780000 FEET 1 14l r s « Is t ,Ei . f ' 3973 J k 4i 35 52 30 i*- 704 2080000 FEET ? 42'30" ey Id.f3 Mr. 7C> N.G:.Sp 7 +78'"45' 51MTAWN;E'LO 3tb Mr ' Mapped, edited, and published by the Geological Survey `O 0 Control by USGS. NOS/NOAA, and North Carolina Geodetic Survey * 1 MN 5?h Topography by photogrammetric methods from aerial photographs GN taken 1965. Field checked 1967 Polyconic projection. 10,000-foot grid ticks based on North Carolina 7' + i 124 MIL coordinate system. 1000-meter Universal Transverse Mercator grid 24 MILS ticks, zone 17, shown in blue. 1927 North American Datum To place on the predicted North American Datum 1983 move i the projection lines 12 meters south and 23 meters west as shown by dashed corner ticks UTM GRID AND 1987 MAGNETit; NORTH DECLINATION AT CENTER OFISHEET Fine red dashed lines indicate selected fence and field lines where generally visible on aerial photographs. This information is unchecked Revisions shown in purple and dland compiled in There may be private inholdings within the boundaries of cooperation with State of North arolina agencies from the State or National reservations shown on this map aerial photographs taken 1984 d other sources. This information not field checked. ap edited 1987 Copyright (C) 1997, Maptech, Inc I)Z.., 0 0 ? a 06 72 77' ' / cl??a 17-4Ln jj,?a,v, c ?&r J-6?s6J /45 _ -?Ii V\ 7v w? N*,p : Q445AML- ¢ q- 334 /4L ,-,y 70 -4310 k 7= _Z: J?.W ,<&Z-7toitJ -- /l/&VD !-eg P-040 6tr(v- VISIT ;Cam, KCNt N C40 Ytz l ORDINANCE N0. (1989) 298 ZC 244 AN ORDINANCE INCLUDES THE TO AMEND THE ZONING ORDINANCE OF THE CITY OF ZONING DISTRICT MAP RALEIG? WHICH BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF . Section 1. That Section 10 of the Cite, RALEIGH. includes the Zoning District Ma y of Raleigh Codwhsah follows: P, be and the same is hereby amended as (a) Jones Sausage-Road, at its northeast intersection wit Interstate-40, being a portion of Parcel 8, Ta h and a portion of Parcel 11, Tax Ma x Map 634,; p 6, rezoned Industrial-I Conditional Use District59according to map on file in the City of Raleigh Planning Department, (Z-43-88) Conditions: ' (1) Application will not Adjustment in accordance with. 10d of • (b)(1) for a storage n 10-2046 wrecked, dismantled oyard for' unlicensed, uninspect?d, and, partially dismantled vehicles; (2) The storm drainage system should be designed such that the post-development. discharge is released at at a rate (cfs) equal to.or less than the rate expected if the site were zoned Residential-4 (1/2 acre lots). This g-uidelie should for two and ten year fr-eq.uenceastorms. be met (b) Glenwood Avenue, west side, between St. Mary's St and Sanderson Drive, being Parcels 280-289,297-302et 314-317, Tax Map 464, rezoned to Residential-4 Di and (Z-54-88) strict. ?(c) U. S. HighVay 70 West, north side, at its northeas intersection with Ebenezer Church Road being g parr t 11, 118, 136, Tax Map 320, rezoned to Thorouhfareels Conditional Use District. g Dtstrsc Conditions: See Attached Co..n ions Dated 12/21/88 Section 2. That all laws and clauses of laws in conflict herewi ' th are hereby repealed to the extent of such conflict. Section 3. That this ordinance shall become effects of adoption. ve upon the date Adopted: 1/3/89 Effective: 1/3/89 Distribution: City Council City Manager City Attorney Planning (4) Inspections (6) C Planner Hicks Applicant ?,-ter--ss 4titE?VO?? E x 1 1 i b it 'C (Sao instructions, page 8) Petitlon No. Z- &J' - 5,45 Data Rod y6c, i1.0 1586 Conditional Use District Zone Request 1) Conditional Use District Zone requested: Thoroughfare 2) Narrative of conditions being requested (If additional pages are needed, please reference additional pages and include owner's signature and date.): 1. Maximum of 1195 living units. 2. Property to be divided into six (6) parcels, as shown upon Exhibik B, dated 8-30-88 and revised 12-19-88, each of which shall be restricted as #allows- MAXD= MAXIMN PARCEL ACRES* UNI?S BIIILDUC HEICHT ALLOWED IIgls** A 21.3 0 As Allowed in T.D. Shopping Center B 12.77 255 52 R-20 C 19.37 290 39' R-15 D 19.30 386 52' R-20, Office Inititutional-1 E 14.34 143 26' R-10 ?., F 12.18 121 26' R-10 *Does not include acreage shown in the right-of-way of those roads shown on Exhibit B. **Defined as those uses allowed for parcels so zoned under the toning Code of the City of Raleigh. 3. Parcels A-F are shown upon the attached Exhibit B. Parcel A mayinot exceed 21.3 acres, however, the areas of and number of units of parcells B-F may not increase by more than 5% and may not contain in the aggregat4 more than 1195 living units. 4. Vehicular access onto O.S. 70 shall be limited to no more than one right in right out curb cut only, the general location of which 10 shown on ..,:. , CONTDIOED AS E MINIT C . • I acknowN moos and conditions an otfersdyduntaril d wig. knowl t N n. ttN p+K?l f? StQrrKsf at Rezoning Petition 4 June 1, 19" k=IBIT C (CONTINUED) Exhibit B, however, in no case shall it be less than 400' from the :Easterly edge of pavement of Ebenezer Church Road. 5. Vehicular access onto Ebenezer Church Road shall be limited to no sore than • one private drive from Parcel A and two public streets, the general location of which is shown on Exhibit B, however, in no case shall the private drive be closer than.400' from the North edge of pavement of U.S. Highway 70. 6. Interior streets, as shown on Exhibit B shall be caused to be colstructed by the Petitioner or their successors in interest. Their final 4lignment may vary.ao long as the resultant change does not alter the area of! adjacent parcels beyond that described in #3 above. . 7. Vehicular access to parcel A shall be limited to not more than five locations - as generally shown on Exhibit B. 8 Parcel B shall contain a "Conservation Area" of at least 2.6 acres including . ' a pond of approximately one acre to be used for storm water mianagement - purposes. Said pond and it's required sedimentation and erosiod control measures shall be installed prior to any other land disturbing Otivities on the property and be subject to City approval. Water shall not bo released from the entire property at a rate exceeding that from the pr?perty if developed as R-4 residential. 9. A minimum 100' wide Greenway easement shall be dedicated without rsiabursement over Parcel F in the location of the present natural drainage-way as recommended in the adopted Umstead District Plan. ( 10. Along the entire U.S. Highway 70 frontage a 50' deep landscaped buffer shall h be planted according to the following standards. In those portio of suc buffer where vegetation presently does not exist or where developmen requires / it's removal, the same shall be revegetated according to these standards. For each 50 linear feet of revegetated area there shall be: Type of Material Quantity Size Minimums 8 3" caliper, 16'height Canopy Tree - 8 7.5' height Understory Tree 36 One gallon contg.iner Shrubs It shall be the purpose of this revegetation scheme to achieve is natural Piedmont woodland appearance by using native plant species and trees. 11. A minim= 150' protective yard shall be required adjacent to the Eastern boundary of Parcel P as shown upon Exhibit B. 12. f City Code) A Mixed Use Development Master Plan (Sec. 10-2092 nc ei g o e the issua to shall be approved by the City Council pr permit on the site. 13. The Westerly edge of said natural buffer described in #11 above will contain a continuous b erm a continuous 3' high earth berm. Along the top of the 42" in height will be ;installed. row of evergreen shrubs of approximately ill be maintained in a living condition and r placed as Such shrubs w necessary. MMIB IT C (CONTINUED) 14. All storm drainage installed upon Tract F shall I be directed in westerly direction away from the buffer area established in #11 above. a 15. Parking lot lighting installed u pon Tract F, and potentially iisIble to residents to the East, shall be directed away from the Easterti property line and be of a maximum height of 12' and a maximum illumination as set forth in S ec. 10-2045.2(3)a of the Raleigh City Co de. Property Owners DATE DATE DATE } U.S. HIGHWAY 70 WEST CORRIDOR PLAN TRANSPORTATION SYSTEM NORTH -lIf ttt(¦RR r ,? c . -U kG LOIS M1,11,00" VAR WESTGATE 4•'i5 1 % ?/??'?/?UtNT, ?o ?? /?-% APT 0 o Z0. UMS 0 Q - Existing arterial Proposed arterial Existing secondary arterial ¦f•f 021 Proposed secondary arterial Sri Existing major thoroughfare t1¦¦¦ Proposed major thoroughfare .?? Existing minor thoroughfare mown.. Proposed minor thoroughfare Existing collector street Proposed collector street `' `' '`f SonsiGw am thoroughfare ....i 0:•1 :.•..... . • Existing interchange O Proposed interchange O Proposed grade separation Possible Lynn Road extension. south of U.S. 70 subject to future study Possible extension of Durhamloop Connector south of North Wake Express ay subject to future study Please note: the North axis of, this map does not _j" correspond to the vertical axis of this page. RD. 1 ? r fir, J I? 1 -?., , % .---- / ?Q,UhT,gr ? All 1 1 lY/yp 0 Air /l ROAD . .. 11 n 11 -t r • • . r Page 2 (c) Litchford Road, east side, between Gresham Lake Road::'and Harps Mill Road, being a portion of Parcel 4448, Block 88,; Tax map 1717.08 to be rezoned Residential-6 Conditional Use. (Z-82-94) Conditions. 1. Development shall be limited to single-family deta,:hed residences at no more than six (6) units per acre and=uses permitted in the Rural Residential district.. 2. Developer shall comply with CR 7107 Stormwater requirem!?ts. 3. For purposes of reimbursement, rights-of-way and slope -easements will be retained at Rural Residential values. (d) Six Forks Road, west side, some 400 feet north of Horizon Drive, being Parcel 0651, Block 47, Tax_ Map 1707.06 toy be .rezoned Special Residential-6. (Z-91-94) ('e) U. S. 70 West, north side, and Ebenezer'?Church Road, st side, being Parcel 8759, Block 77, Tax Map 0777:02 to be rez? d to Thoroughfare Conditional Use. (1_44_0 Conditions: { 1. Maximum of 509 living 2. Property to be divided into four (4) parcels, as shown upon that illustrative map entitled "70 West Center" dated March 8, 1994, last. revised December 21, 1994 (the "illustrative map`:,"), each of which shall be restricted as follows: MAXIMUM MAXIMUM BUILDING ALLOWED PARCEL' ACRES UNITS HEIGHT USES*** A 18.69 0 As Allowed in T.D. Retail/Commercial B 6.4 0 52' 0&I-1 and a Conservation ea of at least .6 acres (inclu ng a pond of approximately acre) C 2.6 52 52' R-20 and/or 0 &141 D 30.51 457 39' R-15 58.2 *Does not include acreage shown in the right-of-way of th ze roads shown on the illustrative map. **Defined when applicable as those uses allowed for parcels so zoned under the Zoning Code of the City of Raleigh. f+ Page 3 3. Parcels A-D are shown upon the illustrative map. Parce A may not exceed 18.69 acres and Parcel B may not exceed 6.4 ac es (including a "Conservation Area" of at least 2.6 a es [including a pond of approximately one acre to be used for storm water management purposes as further described in Paragraph 81). The areas of and number of units of Parcels C and D may not increase by more than five (5%) percent and may not contain in the aggregate more than 509 living units. 4. Vehicular access onto U.S. 70 shall be limited to no m1re than one right in-right out curb cut only, the location of wth is shown on-the illustrative map. 5. Vehicular access onto Ebenezer Church Road shall be limited to no more than two public streets, the general location 'of which is shown on the illustrative map. 6. The interior streets, as shown on the illustrative map, shall be caused to be constructed by the Petitioner or their successors in interest unless otherwise approved by the City of Raleigh. Their final alignment may vary so long as the: resultant change does not alter the area of adjacent parcells beyond that described in Paragraph 3 above. 7. Vehicular access to Parcel A shall be limited to not mote than four (4) location as generally show the illustrative map. 8. Parcel B shall contain "Conservation Area" f at least 2j6 acres [including a pond of proximately one a to be used for storm water management purpo Sa' t and its required sedimentation and erosion control measures shall be installed prior to any other land disturbing activities on the grope y and be subject to city approval. Water shall not be releas d from the entire property at a rate exceeding that established y Certified Recommendation 7107 of the Raleigh Planni g Commission. . 9. Along the entire U.S. Highway 70 frontage a 50, deop landscaped buffer shall be planted according to the followig standards. In those portions of such buffer where vegetatimn presently does not exist or where development requires its removal, the same shall be revegetated according to the e standards. For 50 linear feet-of revegetated area there sha 1 be: Type of Material -_Quantity- Size Minimums k Canopy Tree 8 3" caliper, 16' height Understory Tree 8 7.5' height ! Shrubs 36 one gallon container It shall be the purpose of the revegetation scheme to achieve a / Page 4 10. The southernmost interior. public street providing vehicular access onto Ebenezer Church Road shall abut the southern link of the lot identified as "Fellows." upon. -the illustrative map, shla11 have a right of way width of 80 feet for the portion the f abutting the "Fellows" lot (a distance of approximately 585.17 feet). and one location for vehicular access into the Fellows of shall be provided therefrom, opposite a vehicular access point from said interior public street into Parcel A, generally as: shown upon the illustrative map,. but not less. than 200 feet from the east right of way line of Ebenezer Church Road. 11. There will be a 30-foot width transitional protective y?' rd along the southeast property line of Parcel R contiguous to the Bell property (PIN #0777 02-86-1245), except said yard shifo f extend along the portion of said property line- withe Conservation Area identified in Condition 8. Notwiths g any provision i n this condition 11 to the contrary, if aa portion of Parcel B is combined with all or a portion e adjacent Bell property,. the requirements of this conditioa transitional protective yard shall not apply to the portions! of Parcel B so combined, nor shall the transitional protective yard requirements herein apply to the extent that low-impact usesas defined in Code Section 10-2082.9(e)(3) are developed upon.?he Bell property or portions thereof adjacent to Parcel B. Section 2. That all laws and clauses of laws in conflict herewith are hereby repealed to the extent of such conflict. Section 3. That if subsequent to the adoption of this ordinance the City Council of•Raleigh, North Carolina adopted an ordinance that conflicts with provisions herein, all clauses itnd provisions of this ordinance, in conflict with that subsequent ordinance, are to be repealed, to the extent of such conflict, automatically without further* action of the governing body. Section 4. That this Ordinance shall become effective upon the date of adoption. Adopted: 1/3/95 Effective: 1/3/95 Distribution: City Council City Manger City Attorney Planning (5) Planner Hicks Inspections (5) C ORDINANCE NO. (1989) 407 ZC 256 AN ORDINANCE TO AMEND THE ZONING ORDINANCE OF THE CITY OF RALEIGH WHICH INCLUDES THE ZONING DISTRICT MAP BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF RALEIGH: Section 1. That Section 10 of the City of Raleigh Code, which includes the Zoning District Map, be and the same is hereby amended as follows: (a) Ebenezer Church Road, east side, between U. S. Highwav 10 and Westgate Road, being Parcels 9, 10, 30 and 68, Tax Map ned to Thoroughfare Conditional Use District. (Z-33-89 ns• 1. A maximum of 186 dwelling units permitted on the side. 2. Only those uses allowed in a Residential-20 or OffiQe & Institution-I zoning district. 3. A maximum building height of 52'. 4. The storm drainage system should be designed such that the post-development discharge is released at a rate (dfs) equal to or less than the rate expected if the site were developed Residential-4. 5. The reimbursement value for any required additional ;right-of- way for Ebenezer Church shall remain at Residential-4 value. 6. The subject property shall be included as part of t?e master plan for the adjacent 110.7 acre tract and shall bd approved by City Council prior to the issuance of a building permit on the site. A maximum of two vehicular access points at least 400' apart shall be allowed along the Ebenezer Church Road frontage. Section 2. That all laws and clauses of laws in conflict herewith are hereby repealed to the extent of such conflict. Section 3. That this ordinance shall become effective upon the date of adoption. Adopted: 7/18/89 I' Effective: 7/18/89 G' Distribution: City Council Planning (5) City Manager Inspections (6) City Attorney Planner Hicks r ENGINEERING & SURVEYING ?MIF WITHERS & RAVENEL Engkmff ft & SWVO)ft in- 111 MacKenan Drive Cary, N.C. 27511 PHONE : 919-16-0-3340 FAX : 919-467-6008 4 y E, f 1 I f ? ? ; J t 1 f i i r ? 1 E I i i ? f . ,, I l f / I ( / ( I i I f 1 i i f IItE 7 ; r , ; E r I ?Iz i i tr `?Q ,t E ? I4.I ALMO PROPERTY RALEIGH, NC r ! t j 1' 1'? rr IrJ r, 1 r , I f 1 r , r r t r ...T............?..__,....?,..,_??......_ i r l f ?! i I f I ? 1 F \ ? I J r , i I I II1 i ,I I ? t t ? I k I i IMPACT SUMMARY NRB ZONE 1 5,061 SF NRB ZONE 2 4,156 SF CHANNEL 166 LF 50 0 25 50 100 1 inch = 50 fL Designer Scale CAD File _ W&R 1 "=50' SHT-NRB Drawn By Date Sheet No. JAC 6/8/00 Checked By Job No. 1 111 200147 1 1 i I I ,? ;VII ,\ ?5 1 ! ? I a I : X1111 ( ? IMPACT SUMMARY f I l i I I - I ? ? ? , 803 SF 20 LF i w 0 25 50 100 ALMO PROPERTY 1 inch = 50 ft. RALEIGH, NC o;E Z ? C v -Zz C z Z a ?z Pli O 4?.n?..? w O y ow? (D A f ?p 77 3 CCD - W gm C- ;u ? rr C- 0 0 (n o, r o "Z rn 0 N r o 00 J 0 0 II N 01 0 U) N n v (D CAD ,.. Z -9 co 0 S Z S y ,! i rr ? ? kl ! tt '1 ? 1 ! ! i ? It 1 ,y 1 r ? 1 t l ? r t ? J t ! ? t 1 + t 1 F r i ? / t r 1 / ! k I 1 ? ! 1+ t ? 1 ! 1 V 1 I 1 V 1 ! , s ?, _ f t s f ?.. s t y t y ? 1 11 j ?i I 1 ! 1 ! i ? t t t \ y y c? Z z f Po o N --• '14 .Gd N .{vaa Co Op oo N Z z O Ond M^?1 w O 0 `n C- C- C- c? n F? C- v (n 0 v- ? o N Z CD r ° O p 00 i J O II u 0 s g z o V) Z o co I •? 1 ! 1 I /?I ,? t l ?? ? ll I l ? 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I ~ , ~ ~ ~ c~ ~ ~ ~ ~ , . t ~ m„ Rb~i 1 , YRA~T 9 ...Z ~ s ~ _ c ti I • ~ . ~ 12.:2 AG . , ~ 1 1 ~,ri/' ~ ~ ~ ~r i ~ ~ , O I ~ ~ , SHEET ,.4 ti . ~ ~ ,,.a I~... ~ / ~ ~ ~ ~ . ~ t _ _ , 'I1 ~ ~ . e ~ , ~ I ~ ' Y." ~ ~ . l : ~ T , , iii . J. , ~ I; ; ~ ~1 ~ .1 I. :I i~~ ~ , ~ , ~ ' ~ I ~ ~ ~ J l _ `:J~ I ~ ~I~ ~ ~ ~ ~ ~ _ . i I , ~ . 70R ~F BANK (7YP) ~I ~ f:. ~ r ~ : ; I r t' , A ~ , ~ ( /I ~ NRB LfMf(S'. (fYP) 1 I~ ~ , . 1 I ~ . i i~. I _ , ` ZONE 1 (n'P) _ . sa moan i ~~I ~ ; . . ~ ~ ~ ~ ,t~.: ~ g~. _ ~ ~ ~ ~ I~ ; . . i.. t ZONE 2 Oyp) } . ~ : i J ~ = q ~ .i (y _ ~ - i ~ - ~ _ _ ~ _ vvv I ~ . / . It ~ i • . t . `-~.~1.,.,. - - ACCESS ~ - i ~ l i ~ ~ - ~ ~ 1 ~ `i A ib ~ ~ ; ~ ~ NRB LIMITS: ` rYP _ ' Y n ~ i r Y ~ I . i ~ \ i.. i \ ~ . I I ~ ~ . i " ~ ' ~ l . ~ . „ ~ I ~ ACC I IIS .ACC ~ ~ ~ r'I I~ II . I~ e~ ,1- I E..1 71'P , ~ ZON , . . , , . , . . ~ 1 ~ . - . . . ` ~ ~ r-~ ~ , ~ . . . . , . 4 l,. ' . ~ 1 ~ . . ~ ~ , ~ ~ . I ~ ~ I d I ~ . f ` I - ~ ~1 , 1 1 ~ . ~ • I,.,. . ' . . . rr ~ ' p{,. ~ I , Ri \ , ' I 1 . . ~ ~ ` . ~ I 'I` ~ I ~ I . ~,onww ~ ~ , .l ~ 'i ~ t ~ . ~ , r'' 4 / ` ` ~ II ~ i I . ~ : . , . , r ~ ~ y ~ ~ ~ I~~ / ' r ~ ~ ~ ~ . ~ ~ . ~ ! . ~ ~ ~ . / f , . ~ , . ~ r ~ ~ . i i ~ ~ . , . . . , t is ~ i ~ ~ ! ~ ,i/,~ ' ~ ~ , . ~ ~ I ~ ~ ~ i / F . f ' \ ~ ~ ` ~ n~ ! . ~ `I ~ ~ ~ . ~ ~ ~ - , r , `I i A ~i ~ ~ ~ r~ ~ { / ~ ~ ~ , i ~ ~ ~ ~ \ I ~ - ~ . ~ + \ ~ ~ Hwy ~ ~ ~ ~ ~ ~ ` < ~ . . x.. . V ' ' ~ ~ i . , ~ ~ ' ~ \ ~ ~ F ~ ? ~l . . ~ ~ ~ . \ . ~ i . ~i ~ , , . / ~ ~ ~ A ~ , 1. . ~ ~,i ,i ~ i~ i ~ ` t ~f~~ ~ 0 ~ ~ \ , ~ , f ~ \ . . . , \ i . . . . ~ ~ ~ ~ ~ t:, ~ , . ~ . `f ` J . ~ j ~ ~ , v . ~ ~ a\ ~ ~ . J 1 i ~ ~ ~ \ . 541 lpwpfq gp}. i/ 541 ~00.fl 45 ~ `l \ r ~ ~ . ~ i 'i ~ i' ~ \ \ t. ; ..1 ~ ~ ~ . l(~ W %:i.. ~ ~ \ ~ , _ 2~ A _ \ . \ I ~ ~ ^v i . ~ : y. ~ , ' h 100 ft. . ~ 1 inc = . . . ti \ '1 ~ , ~ ~ Scole Sheet No. - sMr NR ~ Designer ~ , Revrsrons w&R ~ °=100' ' i n Dote 6 n g Date No. Descn t 0 Draw y JAC 6 8 00 Checked 8y Job No. of nc. ene v rs e 1 JJJ 200147 1 RING dt SURVEYING ~ ENGINEE 1149 EXECUTIVE CIRCLE, CARY, N.C, 27511 (919) 469-3340 ] _ F~+:: RAVENEL ENGINEEAING.~ SURVEYING, INC. -NRB.dw 'Mon Jt~'i 26.19; 04; 42 2X00 WI;THEAS 6 K:\00\00-140\00147\SHT 9 ,.ti, ~ i ~ i S'84-2~0~ _ INDEX OF SHEETS SIlE ~ ~ STORM WATER M~NA _i_ ~ GMENT POND ~~~L STORM WATER MANAGEMENT POND PLAN SHT 1 CONSTRUCTED WEILANOS POND LOT 7 SHT 2 RALEIGH, N.C Nh, Vi V i ~~O R~ LOT 14 Fj~ _S ONE MASOf~~g~VE ~ LOT 11 't-LOT 13 VICINITYMAP ~ I z SCALES N.T.3 N T S nor ~z AUGUST 8, 2002 - 1ST SUBMITTAL ATIEMION CONIRACTOFS nr Con5lRUCnari c~uciae ~.woASrer.E fOn me u~ ~~x AUGUST 21, 2002 - 2ND SUBMITTAL , N ,mss, ~s rseF roar c nr LOT 10 ~ LOT 8 CE/~IRy. p+gF@E2NG DtPNR1AENf Al ~1Q. .WD ~ 2 PUfi11C UIIl1fC'S OEPMII~Nf Ai Ai LFASf 6~ ~f~ nr~xn ~nux yams waav ro e +xic ,wv a n~ae ca+s~murar+. I ~ FALOIPE TG MOII'Y B07H ClIY Q~MR111FMS IN AD4INCE OF BECWliIG 1~ Nl LOT 1 ~ CONS7RUCIION~ MIIl RfRlT IN ifE E OF Ap1EiARY fih~S AMD rxouwt ~raarN.unnri or,wv w~me as sExm rac~u~s rar aarecrm I AS A I~SUI.T OF TI95 NOTIFlCATNMI FNWFE. ~ FAM.URE TO GLLl FOR RISPECTfON, INSTALL A OOMNSINEM~ PWG {NYE roawnm w,ws ar n~c doe srr~ ar ,v+r mx~n ~+a~~ of cm or au~ra+ LOT 7 sr~uw+as gnu ~smr av e tm~eo~¢. 'maw ~v~uxc ~vnr A,yp~ LOT 2 w rxc cm or . F~ ~ LOT 9 ,~~~0 %y~P LOT 6 ~ LOT 5 ~ ~ i 5• J' Y LOT 4 ~ LOT 3 ~ LEGEND - ~ , - DESCRIPTION EXISTING PROPOSED EBENEZER CHURCH ROAD (SR 1647) ~»:2,,,~ [DTI 2' CONTOUR INTERVAL - - 70' CONTOUR INTERVAL wa~eR uum ur -2__sccr ~ PROPER71' LINE - - - - - - - - ROADWAY CENTERLINE RIGHT OF WAY LIMITS - - - - - ~ _ - OWNER EASEMENT LINE - ~ PREPARED BYE N CURB & GUTTER ~ SANITARY SEWER FACILITIES ~ ry STORM SEWER FACILITIES ~ WITHERS RA WATERLINE N !AV E N E L HIGHWAY 70, L.L.C. 3209 GRESHAM LAKE ROAD ~ FIRE HYDRANT ASSEMBLY ~~a a= ~ ENGINEERS I PLANNERS I S U R SURVEYORS SUITE 158-160 nni rini~ jinn rig /~A!']/ll IAIA n7C~G S CUVIrIIVl7 JIITVI.vnc ac nan rive RHLCiun, IYUR in Vf1RVLnvn WOODSLINE ~Y NIA Cary, North Carolina 27511 TELEPHONE. (919) 556-4310 - - te1:919-469-3340 fax: 919-467-6008 WATERWAYS - - - NA SILT FENCING X"-'X"X% www.wither~ravenel.com n O N n Q N N 4 Y \ 1 ~ i"~OTf. THE OPERATION AND MAINTENANCE AGREEMENT EXECUTED BY THE OWNER SHALL BE CONSIDERED PART OF THE STORM WATER MANAGEMENT PLAN. ALL DfVICES HAVE I I I 1 I I BEEN DESIGNED TO REMOVE 85X TOTAL f I I I I I I I I SUSPENDED SOLIDS (TSS) IN ACCORDANCE IMTH THE MAST RECENT VERSION OF NCDENR STORMWATER BEST MANAGEMENT PRACTICE MANUAL. .ter. r_. 401 WATER QUALITY CERTIFICATION AND r ADDI110NAL CONDITIONS AND NEUSE RIVER BUFFER RULES, SEE DWQ PRO~CT X001330 ` DRNE _ STONE MASO & ,001530. _ , a~: I. Ii ;Ii I NOTES: I ~ , j , 1. DESIGN PLANS FOR THE POCKET WETLAND PROPOSED ~ r _ . ON LOT 4 SHALL BE PROVIDED TO DWQ WHEN THE LOT r ~ DEVELOPED. IS ,W ' , 1. ANY CHANGES TO THE STORM WATER MANAGEMENT PLAN 'li 1. 'I, I I 11 _ SMALL BE SUBMITTED TO DWQ. ~.a i.,., , _ ti", , ; i , ~rtttauxn n nsxu~x' . xrx j I I i I i I ,-'I ~ I ' I NR ~ , i ( _ ~ , I , 2 I i .c 1 , _ r-- - Y' - 'yr r'~ ~ti h. i~ i • ,d ~ i 4 ~ ~ 1 , I 1 ~ /i i ~ f / i~~ S / ~ i i is i.. I I ~ ~ ..-k ~ ~8l i, t ~ f , ~s. i ,.,I ifs ~ " 1:! ~ ~~',11, IE I'~' ~ I i,..a,, t I _ ~ r i i I I i ~ ; I ~ I i~ is i ~ a ~ ~ ~u° ~0 ~ y : ~ ~ , i I ~~~~x ~ € r i , , I i ` , , I _ I . I f---- _ I~ I j ~ Z I , > 1 s.Y O r, I ~ ~ _ s ~ r.: , I a ,SV \ ~ - t \ - - > , a ~ . , i. _J ' t., I~ t~6 ~~sS s I _ II j. ' ~ r ~ .r~<%~~ t ~T~::fi, VACAN I _ ~ ' _ ~ ~ I I , ` ' ~ n~ rt ~ , . I I ~ i ~ i , c~ U ~r..,,, ; ~ S au iunx4 u~ zrYa Ea IlS ~,sH^~ / L ~ r; , . ~ F . Y ,n / ; / , , , . VACANT m ~ ~ / / G, . , I v ~ a z O ~ G ~ / / y N _ _V _ ti , / / ~ ~ x.. x~ _ ~ _ n ~ x . n . i..,. , `V - i ~ / ~ L. ~ ~ / ~ t i ~ i i. \ ,t - / / r ~ I ~ , i ~ / f i ~ , r ' , - A s , . ; „ NT' _ _ / i s. , , l ,f. s \ _ . 1 ~ z , I ~ , ~ i' , ' f ~ t 3 u„ / ~ ~ ~ k .r' ~ j ' / is i,'~. i ~ ~ : y _..j~:.:. / i E ~ !I / / i / i / i ~A / / ~ 4-+ / / / 1 -I 5. ; / / j , i , l ~ / ~ 4 / ~ ~ I I _ - 1' I i I I i i~c'~ / ` 3 / \3 1. / / / - 4 \ / / ~ ti. / / / / •xa t ~ / / / ~.~y i / i / / i I . I ' ' I 1~ _ _ I; I / / / / LEGEND ~ ~ / / i ~ ~ U ! - z / / ~ i ~ / / O ~ DRAINAGE BASIN ~ , , - z 1 / / DELINEATION / / / P / ~ \ ~ ~ ~ / / O i / / ~ ~~~ti~~rve~ee / / ,+`'w CAR ~/'`''o, ((~~~,N Q x ~ ~ ~ ~ ~ ~ / / h\\ ~.W~~4JS~V e~°9 1 ~ 1 ~ ~ I ~ ~ ~ ~ ~ ' ~ ~ / r .r~ ~"e • / ~ :4 9 r z 'i ~ Y ' ` i (7 i ~ ~ < < z ~ ~ ~ ~ ~ ~ w ~ ~ ~ ~ ~ I taY ~ ~ ~ i / • ~ / ~ SEA / / i E w ~ ~ ' ~ I / - ~ / ~ ~ 18498 ACAN / / ~ 2 •NCINE~.• ; ; ,VA ANT ~ ~ ~ ~ I ~ , ~ , ~ ~ ~ I ( / / N 1. ~ . z , ~ ~ , . , / / _ / / f ~ ~ ~ ' v ~ ~ ~ ~ ; ~ , ~ - 0 _ / / ~ ~1 ~ ~ ~ ~ ~ ~ - - - / / aao soo ~ _ 150 0 75 150 r~-- / / _ ~ M _ ~ i. SEE NOTE 1, - o _ ~ / / --~"J / / 1 inch = 150 ft. 16 SR ROAD 47 AD 4 _ RC HU BENEZE Sheet No. a RAVENEL Til WITHERS PLANNERS tSURVEYORS Date B Designer Scale . 150 N0. ReVIS1011 5I20I02 JAC W&R 1 EVSION TO DWQ PONDS & LEVEL SPREADERS n B Date ~ 1 R 6106102 JAC Draw y C 2 REVISION PER DWQ 2nd COMMENTS JAC 11 /28/01 )VERALL STORM WATER MANAGEMENT POND PLAN ENGINEERS I 111 MacKenan Drive Cary, North Carolina 27511 tel: 919.4669.3340 fax: 919.467.6008 www.withersravenel.com mmmmmw~ 3 TRACT 1 POND SUBIMTTED 8/15/p2 KLJ Checked By Job No. RALEIG119 NORTH CAROLINA N JJJ 200147 - 4 U Y . I ` . a I ~ ~ 33 CANNA FLACCIDA \ \ 97 JUNCUS BIFtORUS 5h~H ~ ~ \ , `.I \ . ~ _ \ 396 ~ \ a a a I \ a a a iTfAR1A IATIFOtiA \ a a T a a 208 BAC ~ ~ ~ I _ a a a a a r a 1 a a ~ a a a ~ a a pp a a a I ~ ~ I , a a ppp pp p a a a s a a s ppppppppppOpppp a a a ~ a pp Oppp pppp a a a a a pppppppppppppppp a a s a s 20 _ NAGS EMf`NT ` • F ~ E a a p ppp pppp pp a a T a r a s p p ppOppppppppp a a a a ppp pppp a a a pppppp a a a w . ` ~ _I-_ ~ I a a a a a a a a a a T a a \ ' y I I i a a w a a T T a a a a a a a a * a a a a a a T a a I I ~ ~ a a a T a a a a a a T a a a a a a a . a a a a ~ a ~AURURU GE~NUUS ~0+~ ( I \ ~ / a a a a a a / a a a a a a T a a ~f) \ i I w p a a a a Opp a a a a p a a a s a ppppClppp a a a a pp " a p „ a a s p ppClppDp pCl a s a a s a s pClp a - - ~ a apppppppppppp a a a ppppp a ' I~ I a a pppppDpppppp? a a a ppppp a a pppp0ppppp? a a a s a ppppp a pp ppp a 0 . I- I a a p ppppppp a a s pppppp a s \ a s a pppp ppppp a a *pppppp 4, N ~ + a a pppp pppp a a ppp a \ I i • . I ~ a ~ ppp0 pp a a ppp p a a p0 a a p0 a a ppp pp a a ppp a I ~ - I r. I a pppppp pp a a pppppp * ?Oppp a a ppp a I ° ppppp° ~ a ppp pp a I h p RATA l ~ ~ _ a a p pp ppp 58 ( RU a s ppppp p T ~ a ppppp . I . a pppp a p --t-_ p[] pp p a a pppppp p r a s pppppp a • r ~ ~ I , _ _ ; ~ • I * pppppp ppp A TF LIA G a ppppp a a pppppp ~ I , _ - A pp ppp? a pppp ~ a ~ I . a ~ ppp pppp a ®pppp I pp a ppp a 20 TA a ppp a pppppp ~ v I \ _ a pppp I I V NI ~ ~ 4. a a ~ a pppppp w a a pp a ~ ~ ~ 48 0 CONCR ' .f ,=mss ~ I ~ RISER W/TRASH LI a a a n a r a a = I I a a ri a a a a . ~ e. ~ ~ ~ 0 f R a E ~ . V NAD .,a I ~ 9 r ~ - f~~1 20Qb ~238~2 , . . ~ ~ ~w y . . <u.< 4 _ - I . ' t s;;;i:;r;;~ CU5 BIFL NRB.... 5p... . ~ , . , , ~ . I ~ - w ~ _ ~ p 3 ~ S1.1~: 24 RC , . , ~ ' C J F 1 _y r ` 'a ~ I 1 x ~ ,,e Y SS RIP-RAP ~ " I r D IPATO PAD 34 _ 19 Wx9 ~ ~ I `'~1SE R C ERU L 390 I ~ o N • . _ p ` ~ . , ( \ w I ~ - LAN VIEW ~ \ \ HIGH MARSH TION WETLAND iRfl ND ,Dr. DETEN ~ - 20 SF FORE &IY 9'~ 2042 SF x ~ _ I . V ~ r, \ ' I _ . - \ ~ . I z 7 . • ~ . _ ~.I _ - _ - E - > ~ 1..x..1 FORE RA 404 - _ _ _AL G ~3R~_~ DUNE _ Comenta>o Telrsa _ _ _ MOTE _ ' ' _ I - - _ 2,159 SF _ Extended tNetlend DeNntlon Pond 1-Lot 1 - - P(A STEM PLUG T P OF ~ _ _ _ ~ _ SEam Qpeak Qpeek Max. Max. Q I ~ _ _ - TS AI.3_ i RILL ~ ~ i S PIPE & In put lN8El Pond Storapa w Frequency W I LJ _ SEE _ .Yr._-_ 'AS 31 I ~ TOP 0 _ 16.4 0.60 396.80 0,6 I F DAM EL=39 .0 - - ANTI--VORTEX DEVICE ( l~ _ . WSEL , 2 .726 Q W f 10 21,6 1.63 397.08 / E5T Et-39.0 . ~ ' ~IQ ' SQL' --3--._ - 1.013 ~ ' ~ ~ LOW MARSH 398 - P6SED f _ _ _ . _ 100 26.7 14.4 397.50 OL~G ELEVA ION 396.00 AL , , ~ . ~ 5~ , 12 475 SF CY_ ~ ' ANTI-SEEP OLLAR _ . _ ~ _ „ - SEE DEf IL~ _ HIGH MAR H I 9 396. _ • ~ 48"~ PREC T REINFORCED _ _ _ Elev~or~ _ RETE NHOLE RISER) Basin 9otlon Elevatbn 394.50 . CONC ( ~ . _ ' Q ~ INV= PermaruntPoolENvatlon 398. 394 _ C~ i ~ _ TTOM OF MI RO POOL=393. 0 _ - 397.00 1t. \ r ~ IN -392.4,E _ . " ;as ,60 _ _ Crest Elevetlon ~ _ _ _ o _ _ _ , SCOPt= , . , B0. OM OF_.WETIA_ __-394.50 _ _ Top of Dam ENwetlon I ~ ~ _ _ LF 24 0 RCP LASS IIl ~ 39 5 - - I _ _ - . _ I _ CLASS RfPRAP _ _ 4" NRS G TE VALVE- _ _ _ AWCE4~F~ MANN E AT'_LFAST _ „ _ - - - Areas i _ - _ ]2"_INTO.OONC EIE_F I I _DISSIPAT-OR-P ..18-Tt11CJ~ _ _ _ Pamanent Pool Surtaoe Area 28x401 W _ _ 8.71 ea 390 FAB IC UNDERLINER SE FILTER _ 6 z6" TEE _ _ Dninape Area ~ _ 1 h,, _ - - _ _ Impervbus Area 4.85 ac. . MICRO P00 388... x.B'W_x _iflu _ _ _ - , ~ i ~ ~ 2,561 SF _ - TE US ,500 si CONC E Olher Parame~rs I ~ Design Relnfall 1 fn. runoff 386 6" orlAcce I ~ ' r. a a ~ Drawdown Devoe .r o °i. ~ ai ~ Min. Drewdown Time Req d. ~ I ~ ~ o `0 ~i rroi ~ ~ g M ion Volume R d. 0.388 ac,iG N N o~ ~ M M g Mm. Detenl ~ ( ~ M ~ M M Detention Volume Provided _ 0,888 ac.fL M ~ ~ ~ \ I W ~ A 11+00 11+2 1o+so Np~; 1o+so , , ~ 10+2D 10+40 ONFINED 0 RING GASKE 10+0o p TONGUE AND GROOVE W/C _ 1. 24 0 RCP SMALL BE PROFILE VIEW RISER 9ARREl -c-361 LATEST. C-443 LATEST AND JOINT OF ASTM ~ p ~ MEETING ASTM a HIGH ~ 1 =10 HORIZ ~ LESS THE NEED TO COMPLETELY DRAIN n ~ .KEEP 6 GATE VALVE CLOSED UN I W ~ = VERT 2 ~ I 5 R MAINTENANCE PURPOSES. n C~ W > . THE POND IS NECESSARY FO C~ _ , o ~ NOTE: THE CONTRACTOR SHALL SEED AND ~ q MULCH ALL BARE AREAS (EXCEPT IN AREAS OPERATING WHEEL eB A o 0 'FRAYING WHEEL - PLANT LIST - - g acin WHERE PUWT MATERIAL 1S PLACED) AFTER ~4 REBAR 12" T UCTION IS COMPLETE. SILT FENCE NOTE: ~ sEE DETAIL IFS Common Name ANTI-VORTEX DEVICE ( ) QUA SPEC - O.C. EACH WAY CONS R TEM ~ o SHOULD REMAIN IN PLACE UNTIL GRASS PLACES , STEM . w o , o SUPPORTS AT 3 ~ PRESSURE RELIEF ~ GRASS HAS BECOME ESTABLISHED. )RTS AT 3' ' I en Canna 3 o.c. rDP of 44 Canna flacc~da Go d BASE PLUG 1 „ - LADLES I/z' Du. o o , , , y o FROM BASE 5, I ` PIPE 8c DRILL Fla Iris 18 o.c. ~ PLAN VIEW o o roP Ls to cAC~ carRr~~ ;y N w o MEDIL OR I/8 STEO. n r, z PRESSURE RELIEF LADLES wAr 6x6 TECH„, 193 Ins v~r mica Blue g ORIFICE ~ ~ z6 TE ' S 2 o.C, u~ BE OM07ED~ F' ENDS OF iflorus Shore Rush 473 Juncus b 3' o.c. 7 wELOEO P C°~"~ '~E ~ ~ ~ BARREL m) FuLLr OPEN wNEN PIPE 1/2" PREFORMED JOINT Fra rant Water Uly ; 442 N m haea odorata g Yp A~'~~D' DIAMETER FlLLER, 12" WIDE ui { r I Weed 18 o.c. Pontederia cordate Picke e 5000 •~"~i " ~ CYLWDER 15 I1 CAGE CDRRURITED LlEirll PIPE , ~ I of Arrowhead 1 S o.c. ittaria latifolia Broad e DR FABRICATED fROM 1/8' t~;~ 12" STEEL PIAIE ~ ,;t 6 D1P PRECAST REINFORCED 1521 Sag 48 ~ ~ ' O,C. ~r`aa~n~aaa NHOLE RISER r $ Tall 2 °dK iACKWELD - " ALL AROUND ~ n CONCRETE MA ( ) Torus Cernuus LIZa d 1150 Sau _ a, ,,~,~,~~p. „ ~ ~ E 1 NDTE3: I. THE crLUrDER rusr sE nRNLr 6x6 rE t~ ~ FA5rENED i0 THE r0P OF ~ RLSER, ?000 PSF MIN. ~ ~ C ~ ~ 1 1. SUPPDRr BARS ARE ARACNED gTION SECTION BEARING CAPACITY AB' Br srRArs Ba.rED ro rDP ELEV BENEATH COLLAR ' n ~ ' o ~ r LEAST s a~ ~1. ~ o o ?ANCHOR MANHO>"E A m ov RISER. 8 x 12 8 REB4R s 12" INTO CONCRETE FOOTING a 1~~9~ a tnR) R B4R c, •.FNC ~o' a~~~o ~ ~ N ~~jr ~C ~~w ou~"~' e o ~ ~ URE -~,d<CrN .1.~ ~ - OLLAR a . ISER STRUCT ~ , R secTloN A-A _ ANTI SEEP C ~E 4 ° NRS GA " VALVE NORMALLY CLOSED) NTS 4 NRS GATE ~ AN>~-voRr~x oil Sheet No. N T S L Date B ~ignar Scale No. Revi i n W&R NOTED ~ 1 REVISION TO ORIFICE 8 21 02 KLJ CORNERSTONE TERRACE EXTEN o Drawn By Data JAC 06/17/02 J ORS ENGINEERS I PLANNERS I SURVEY 111 MacKenan Drive Cary, North Carolina 27511 tai: 919-469-3310 fax: 919-467-6008 yvww,whhennvanal,rom NORTH CAROUNA h q Checked By lob No. KAUIGH, KLJ 202076.0 ~ . r _ ~ ! ~ ~ , / .r ~ ~ f r a.. > i~ ? _ y.. W .a r' ~ f ~ . . r J n.,.- f j ` I _ r ' _ _ _ _ _r . ~ , , ' f . - t, a_ ~ _ _ L~ r ~ _~a- . d ~ , r _ - ~ ; ~ y ~y Y--- r / . r' r r.,. / r lA. e ii w , t r / / i F-~ - _ ~.vt ~ I ; t ~ i ft ~ 1 . - w ~ .r ~ - - l . ~ W. ~ ~ . ~ _ _ ~ tl t. 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Ij / . f J( f ' ( f ~ t t ~ ~ t I t~ r 1 f l 1/1 ter ~ i rj/ t / f ~ ~ ~ ~ ~ i tl~ ~ !I' t NOTE or~c cwr~uc DErENnoN r~ ~r ~t t r i~ i il. f~1t I, i M ~~AS / ' f I ~ ; / ; 7 / t _ t ~t ~ 1 r l i r i f~ / t r y , i • f , i ~ f p s i / i i ~ 1 AND RE1ROhT! E~ST~VG ~ srnucru~ As sNOwN ~ / 1 l ( , 't ! f f ~ 1 i ~ Z ~ f ~ \ /~IK1L t l~ l I ~ i a a 1~~' , r ~ l r I~~ I oN sr~Er ~ • l F - t t~] I s ~ a a~ i~ ~ ~ ; ~ I ~ ~ i 4 ~ ; ~ F 1 ~ ' i k 1 ~ t ~ ~ ~ ` , ~ , , ~ ~ ~i ~ a ~ , f i 1 1 h 1~ ~ A ~ 1 s ' t ~ w I ~ i ~ ~ ' ~ , f / y ~ } ~ t t l` . l f ~ i . ~ ~ ~ ~~i11 . ~ . J ~ ~ / ! ~ ~ V r ~ i a j ~ . ; ; l ~ ~ 1 r ~ ~ ~ti / / SPECIAL NOTES: i i ( i ~ } 1 ~ ~ I ~ 1 ji ~ t 1 i. 1HE REINFORCED CONCRETE HEADWALLS AT STRUCTURES ~ 1 ~ n i ~ ~ ~ r.. 1 ~ ~ HW 201, HW 201 AND HW 302 Si~il.t 8E PROVIDED BY } / INEER AS SELECTED BY THE OWNER A STRUCNR4L ENG , 1 I V ~ / PRIOR Tn BEGINNING CONSTRUCTIOW. N~ 2. THE REINFORCED CONCRETE JUNC110N BOX S1RUCIURE I ~ ~ JB 301 SHALL BE PROVIDED BY A STRUCTURAL ENGINEER, I LOT 4 ~ ~ / AS SELECTED BY THE OWNER PRIOR tO BEGINNING LOT 3 ~ ~ t CONSTRUCTION V 3. THE PRE-CASE 5 z12' REINFORCED CONCRETE BOTTOMLESS CULVERT LOCATED BETWEEN NW 401 TO HW 402 SHALL BE 1 a ~ ~ ~ / DESIGNED AND MANUFACTURED BY METROMONT. THE FOOTING AND WINGWALL DESIGN BY ALPHA ~ OMEGA DEIGN GROUP ~ I ~ S hN R / IS SHOWN ON SHEE15 1/5 THRU 3/5 WfIHiN 1HESE PLANS. 3 ' ! ° I ~ ~ I /1 ~~TM ~ l / ~ ~ N ~ I J ~ is ~ / ~ ~ . y r,. n / " i • - , " i ...u - - _ - ~N CARO ~ tt~ r ~ ~ S ~ =,~,-r .r t r. ~ _ r _ Ess~ y ~ w ~ ~ _ ~ r... _ = SEAL = d . . - . ` ~ ~ I~l,t~ ifF 190./7 ~ , h/' / 13423 ~.w v~ fMCINE~' `t r ' "`-..-__.-~.,'~RY /0~)1, •Nj'~b1.9~. ~.~~';.-way'.'` G'S ~ 1\K- ~P S~' O - ~ ~ - ~ r / Ry ~d JAY J ~MN• ~ O O N / / r f / goo o ~o goo zoo +oo ~D O / 3 1 inch = 100 it. N N H _ _ co Revisions Designer Scale CAD File W&R 1" = 100° SHTSTM2 o No. Description Date JB Withers Ravenel CORNERSTONE PARK 0 1 CRY of RaAM MIS= tat Engineering and Surveying, Inc. 2 REVISED S~Rr ~ a CONSULn KENAN DRIVE, Cary NC 27511 Phone: 919-469-3340 Fax: 919-467-6008 3 REWW WRMM LASE & RALEIGH, NORTH CAROLINA STORM DRAINAGE PLAN Drawn By Date Sheet No. JAC 7/14/00 Checked By Job No. 0 111 200147 0 0 Y AlVI~ION~ •v S•9-94 VAi[1JpUS 6 ~c"~? Jfg m C iax• ~ NORTH ~Ul 6R+~ N t2-9-94 J7$ OJ va¢aUc ~ ~z•zi_Qa 0 38x. ~a oe~-; ~ d SITE DATA m E 104.88 ACRES (61.0 ACRES, THIS ZONING CASE ~ m > a 509 UNITS (TOTAL ON 61.0 AC.) m 0 2.6 AC. =PRESERVE ~ U . o~ . - 3.8 AC. =OFFICE & WSTITUTIONAL - t ~ a ~ ~ ' ' yN' NAt1~A,l.~VEiEA',~ 9.81 AC. =ROAD R/W wp1 ~x~' " ~ 2.6 AC. =OFFICE /RESIDENTIAL Y a ~ ~ i~ i ~ 30.51 AC. =RESIDENTIAL ~ ~tESIDENT~L I - -10.55 AC~ UNITS ~f " 18.69 AC. = RETAIL/COMMERCIAL N m PARCEL 8759, TAX MAP 0777.02 ~o ~ ~ ~ c a ~ ~ ~ U ~ ~ Z z W ' E%ISTING PdD / ~-Y~1-: __"t ~~Hi 1 i . • > w PRICE o ~ 0~.. a o ~ O ~ - U _ / / W ~ ~ ~ ~ ~ ~ ~ 30'WIDE TR JOPlE$ ~ / .rte J ~ 30' WIDE TRANSITIONAL PROTECTIVE YARD C ~ Z Q 0 N eeu ~ Q V / ~ _ m c w W W 1 ~ V ~ 1~I~ ~ / r so.s, nc. • ~~as- ~ \ ~ ~ ~ ~ ( ~ , - ~ o a i • 1 ` ' ~~RESIDENTIAL ~ / ''~i~~, ~ ~ ~ a 3.8 A~ :y.. / W'OOTEN a Q / ~ + ~B.~~nc: ~g~ ups / , ~-•-y~- , `fORjfAERIX l~ONIrlr~cns~z-s~-de ~ t / / PAIL/COMMI~HCIA / ~ ~ l ~ a , % I f I ~e~ ~ ~ I 18.69 A~f~ES ~ ~ •y. 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I ! / , I } / 1 I r r 1 I / / I I s 1 - - - / - ---~'l 1 ~ f } / i \ t 1 1 1 I - , / ! 1 / / / I I ~ _ , , 1 1 / I 1 \ i ~ ~ 1 / / 1 I 1 / r \ I ~ \ 1, / \ H I ~ ~ I / ~ I j j \ I v \ ~ ~ ~ V I / i I / / / 1 I ~ I v A i I LiJ ~ ~ V I I I / / I 1 ~ v ~ A > / I 1 ! / 1 \ I r / / / I A v ' / v v~ vv ~ ~ i ! / ~ / ~ \ ~ ~ \ \ 1 I ! 1 / / ' I f ~ \ \ i 11 I / I \ ~ \ 1 I I / / - \ ~ \ \ 1 ~ v v ~ I I 1 ~ ~ i i 1 5 I ~ 1 V t ~ / / ~ ~ ~ A A 1 / - _ \ \ ~ _ \I ~ \ ' \ \ \ \ \ ~ I - \ \ \ ! - \ vv v vv 1 ~ v ~ - - w vv v ~ v v 1 1 v _ A vv vv vv v \ - - \ \ v v v 1 ~ \ - \ \ \ \ 1 \ ~ \ _ - - - d 1 / \ \ \ \ I / ~ ~ \ \ \ 1 1 1 + - \ \ 1 1 1 - - - \ \ \ \ 1 I I H i / J \ \ \ \ I ~ \ \ \ \1 \ \ \ 1 I I , _ f \ \ \ \ \ \ \ \ \ \ 1 O A v v v A _ ~ ~ ~ v v V A v A 1 \ 1 1 1 } I i I I ~ _ 1 1 I 1 1 1 I I \ \ 11 I I I I I 1\ - \ l I I I I I 1 / \ \ \ \ \ l 1 i I 1\ v A 1 1 I I 1 I I A A ~ \ \ I I I I \ / - \ \ ~ \ \ - _ \ \ ` ` \ \ \ \ 1 1 1 \ ~ \ \ \ \ \ \ \ 1 , 1 1 1 i 1 I I I 1 v`---' / \ ~ ~ \ \ \ 1 \ ~ \ \ \ \ \ ' \ \ 1 1 1 1 1 1 1 I 11 1 y I 1 v v1 ~ 1~ ' _ \ ~ \ 1 1 1 1 1 1 1 v vv ' v I 1 1 11 _ \ t Y \ I , \ C \ \ \ \ \ \ ~ \ It t l O v v v A v ' v v ~ V A \ 1 1 1 1 v v v t v I v vI 1 v 1 11 v v vv vv v vI ! .,v vv ;~v \ \ \ / `v vv v v / v vv 1 v` v vv v vv 1 \ A V 1 1 1 1 I 1 v V A V 1/ v . . v: . i ~ \ \ \ _ / ~ 0 \ 3Q 8~ 1 0 1 } \ \ t 2 v v 12 1 v v 1 ~ v v 1/ v v / v v ~ ' 1 1 \ \ \ \ ~ ~ 1 0. / \ \ \ \ / / \ \ \ \ 1 1 \ 1 \ I / 1 \ y \ \ \ \ 1 \ \ I I I p, ~ / ~ \ ! \ / 11 ~ \ 1 \ } I ~ Av ~ vV v II 1 _ vV A V I 1 1 } 1V 1 ~ \V Av A ~ ~ 1 1 ~ V A A. I 1 1 ~ A A \ 1 1 \V A A\ \v `v A 1 1\ v I I ~ Av ~ i 1/ 1V A V A A V A v V A A V ` ~ ~ VA' v i / m ~ r v 'v\. ~,inchv- 60~. ft.l ~ ~ ~ v Q O Revisions No. Descrtion Date B EDesigner Scale CAD File R i °=60' BASEJ{LTt Withers Ravenel Engineering and Surveying, Inc. o i ° ALTERNATIVE 1 Date Sheet No. C 6 26 00 o TM~ aae¢RS 111 MACKENAN DRIVE, Cory NC 27511 Phone: 919-469-3340 Fox: 919-467-60((8 By Job No. I Y J 200147 2 i I I i i I r i i 1 r I I 11 / / ' ! J 1 ~ 11 tl / / ~ / ~ I Ill Ilti, i , tf I ~ r / r I ' i I~ 1/ ~I t i r i 1 ~ I , r , ~ i" ~ / {l, J / ~ ,I / J r I ~ 11 r r ~ ~ i" l , r 1 I Ili I ~ I !f i ~ t i ~ ~ r, 1, I / , , ,I . r ~ , , GENERAL NOTES - EROSION CONTROL i / ' % r J 1 I I f 1 1 t I i / J ~ II r 1. All construct' n ' i r ~ t I I f + ~ I I Irrr r ' ro shall be m acconianos with current Cty d Rabipr Standanis $ _ ~ / , ~ / t r ~ r J attc stn t5+bs.7+ eoPa = )III r 1 f~~ % / r I / ~ ~ , ~ f ~,...--100-YEAR FLOOD BOUNDARY P7 r , ' i f ~ / ' ' ~ f i Specfications. ' / ~ ' ' ~ _d JI I tip / / / , / r I / r SiA tO+G?,0~ 8b~5 (fU~G ~ r f 1 ~ ~ , ~ , ' , ~ 1 ~ ~ ' ~ " ~ r .F' i ? ,I~ DELINEATED BY WITHERS ~ 2. The contractor shall verify the location d all strafing ude~gmunl uh'ities piior to ' ~ % ~ , A / \ ~ i , beginningconshuctian. ~ ' ~ / ~ I ~ ~ ~ 1 , , ~ i / , , , ' ~ r ; RAVENEI ENGINEERING ~ EROSfoM CoN11tOL 51'116O1.S r ~ ;I I { i , r . ~ ~ f I „ f' ~ ~ ~ ~ ~ `~i seM ~ l' 1 'I+l' SURVEI1NG iNC., FLOOD SNDY 3. NoF.E.M.A.flrod lain located on the site as rFl ~ ' ~ ~ \f _ -P Pe RM37183C020 E, March 3, ~ ~ ~ - --.~_.i / / / / / ~ ~ ~ / ~ J ~Q. t f~.~ ~ 1 ~ r .r _ _ , r~ ~ ~ FDR CORNERSTONE PARK 0 - / / 4. This site is not located within the falls Basin orSwiftCre& ' / r ~ ~ LOT 10 ~ ~ ~ \ ~ ~ ~ r ' / ~ y ~ DATED, IIiAY, 2001. ,erpo~r a?~aoN 5. The contractor shall be responsible fw maintaining al temporary se~thy~ r _ ~ -d= l ~ ,~1 t,5 l r P,E/.~TA 10rfK;.00 P,Ofi = i / ~ i ~ 1 r ~ 1 1 1 i rr ' f r ~ I ~ ~ i. • ~ ® ICCK pRClf DW ~ ~ ~ ~ 1 , 1 1' ~ .r and erosion i --450---- r.- i , i ,St~5.58 8004 -"'i ~ „~.,-z"~ - ~ _ ~ 15+-%t' Centroldevicesshrnmontheapprovedplan. ~ i / ~ ~ i r~ ~ ~ , ~ i'C ~ t c>?~. / ~ iRFE PIIOiECipM fBA~'Itp ~ , 1 6. Allaroasdisturbedduringconstmctionshallbestabilizedwftrbm - r ~„-i ~ ~ ~i ~L.-- ~-r-~~+ _ , r ; A~ ~ is ;~L,. ~ ~ ~ .1«~. '4~~".. ~ ~ ~ ~ I ~ ,r ~ . ~ IrlT ?lIGIlL7pl1 and mulching within 15 working days fdbwing completion dlrad'mg. tad ~ ~ y,-`' ~ r ' , f' seeding, mulching and grotnd cover shall be applied to the aik fa Ibwib _ _ _ _ _ _ _ _ _ _ _ / / i • / / - • i f -•°'"~j / FXCB442 / - _ , _ i ~ r+ 1 ~Xi/(Y401 / ~ ^ ~ , r Ids 11M pWNFl,/p~lOpt canpletiondaonslnrction. _ , _ ~ ~ r ~ Ex s~ ~ v ~ ~;r~= ~ , .1~` C a~wv. s ~r Ncr ?uQ ' o;wrucE ~ ~7r~'o sro,lr"~ i~.- ~~3~l~.~ 1~ smwrv ng waberooursa: Turkey Creek , / / 1--- 8. Denuded 8lea: 9.8 saes. ,n i' /-l ~ ~ / k00 '~1 ~ r ~ \ ~ ~ EASEM,ENr' _ ~ ~ ~ ~ ~ladACEr rs- ~ , / }3 / ~ f~ ~ , 4 EROSION CONTROL NARRATNE ± ~ ~~i ' ~ _ - ._'._E J / f Canersiflne Park, Lots 6 $ 9 are baled n nafrrraslern Wake - ~ ~ i ~ ~ / I ~ T~ A A'~ / iC STA 10+00.00 RQt l = _ ~ ~ / I ' t / of Rabgh s Planning Jurisdic~an. The p rojed ie epeoficefiy bated .tie north / ' ~ w / ~ ~ ~ ~-`i ` ~ t 1 /1 Ir-.,'=. ~ ~ , \ ~ ~,1 `tip of US 70 'ust east of Ebenezer ~ ~ ' Sum. i"~ - / i ~ ~ ' ~ ~ r~ ~ ,1 Churdr Road. The project axisisls dtlaering,,- r-4~o - ~ +p~ ~ ' ~ , 1 grubbing, grading, roadway, utility and stomp drainage irrprovamrenls far 7Lbwn " - ji / t2 ~ ~ f ~ ~ ~ r / L homes lots. The contractor shall faithfully follow the -"x~+•- ~ / ~ r V ~ r ~ m f % j l! _ h f / 1 I 0,~ ~ ; ~ 40 t~°" ~20__~ _ -AO°__ 80 160 / .ice' ~ / r y that all sediment is retained on this site with ills erosion control ~ Z~+"- ~ I I ~ ~ ~ /I f r mreeersesar~. - P B~ ~ N I ~ I devisoes shown on these tans. - ~ . 'e ~ ~ f I f s i r r i ~ ~ ti ti , 5 R ~R " w p Extremecereshall ~ ~ ~ f ® r f 84 RIw , - - l t Q ! ways and temporary stream crossings shah be used ft the permanent stomr 4rdrregs' ~y1 ~ ~ r 1 f I ' ~ ' r ! Fr 6a ' V' ~ ~,ry~~{ is not rcrstalled to radi . The E inset w the Ci d Ra ~e1o¢' - ~ 1?91~T' ` ~ ~ FFE I t E ineerrf warranted ma i / 15' STORM ~ ~ 451.E 1 I ng y requ ro adddanal erasion contrd measues. ,i ; ~ f ~ I ? ! it r ! ! i I i r, ~ ' \ ~ - ~ ' f 1 nc~i = 4U"'~ft. •t ~ / i• - r ~ f ~ 4,93,0. ! J FfE. r f r! T / - r ~ t ~ ~ ' rp+t~ ~ r ) , , f r ~ 4510 ; 1 ifF! CONSTRUCTION SEQUENCE t ~ i i / ~t~ ~ _ ? ~ ~ f I'~0 S~Qr 1~_ ~ / 1 1 1~ 1. Insiatitree tectionfena as shown I ' ~ r ~ t t ! ! ~~r0 1 ! f~~ I ! / 1 1 j t 1 1 : FX~B~,'` ~ '9 w1v ,tiw ! f 49x0 l ! ! ! ! 5 ~ t r•h e~ \ ~ Pro m9 on Ore ate and ca I the Cfty d Rylegh l ~ , _ YA 4~0 ,ra dl+ls.4z ! ! Inspedbns Department to make an appdntment for a field i l o ~ _ _ _ , ~ 15 S~ _ f i r f 1 i w. ! r , a, , - ARO ~ 1 r ~ c r ! ~ 2. Obtain a grading permit from the City d Raleigh In ~ gp.-~., 1 ~ ~ ~ t r r ,I r r r O ' ! ! , 3. Install gravel entrance, temporary diversbns, sift fenang, m e w ~ N ~ t r ! r / ! I ! ~ ~ ~ t measures ~ shown on the approved plan. gear oll Y . ~ . _ _ ~r ,p• v ~ t r ! ! r 1 I ~ i ~ ~ti' ~ I ~ " ~ ~~`;'A 9rt}UQ.t'G FOP6 - ~ ~ thesedeviaes. ~96p~ ~ ~ 5 rt+24.39 Clg~~ ~ t ~ i ! its t r 4. Call 890-0435 foron-site ins ectian b Cor~errratian E inset. ft ~ r ) ~ r ' ' i _ ~ I i 1 ' ~ yam/ / ' t -.w- ~ ~ / r I I ! l ~ ' ~ l / ~ + " i ~ SFA'i(i+i3s3-E`n ~ ~ ` P Y n9 approved, begs , ~ ~ ~ ~ ~ ~ 1 r t r Bearing and grabbing. ? \ r r~ ! 5. Maintaindevioesasneeded.R h ails. ~ - ' I f I ~ I ! ` r r oug grade . ~ ~ I ~ I r 1 6. Stabilize site as areas an; bra M u to finished with lion. i ~ ~ ti ~ 1 I ~ t r i . ~ \ ~ I u9 P ~ vegeta ~ ~ ~ ~ ~ I I I I I 7. When construction is complete and all areas are stabilized eompbtdy, cog for an / 4x0.3- - ~ t I I I - ~ ! 3~ P I ~ ~ ~ t ~ ~ - inspection by Conservation Engineer 40 _ ' \ ~s ~ j i j ~ I ~ ' r ? ~ 1 1 ~ 8. If site is approved, remove temporary diversions, sift ferocirrg, sediment basir>s~ ' - ? ~ 45&0 \ ' , ~ I I j i ~ t ! f i t 5.0 / (t t ~ i ~ I I l ~ A I ~ ~ , r` f ~ I~~p~, , ~ ~ ~ I ~~,f~ v.~_ etc., and seed out or pave bare areas. ~ , , ~ ~ ? ~ f S I I I I I w ~ rr r t J 4~T5.0 / I, l I'~ ; r i~ yyy ~ . I 1 l t ~ 1. ~ r I I ~ r f ~ ; 1I„~ j ~ 1 9. When vegetation has becane established, call for a final inspection b ~ ? ~ t 16 SPA a t I i ; ! r ~ y = ~ ~ s t I a I ! r~ IFFE:~ r t Conservation Engineer. ? ~ I r t r OPEN SPACE'. , I I ~ I ! ! ,451. FFE~ % ` ` t ~ I f ~ i t , ~ I = / i i ! ~ P I ( + l ,Il Ji r } f ! / l r ~ ! ~ ~ ~ x J ' ~ + ~ C ° _ , f I i ~ 1, ! i, r Fr` i i ~ ! 1I l . ~ ~ ~ i ~ IX~~~~ $l~} J 7f 1. y 1 / j r 1 r f 1 r I .5 A r ? ! ~ ~ ! I 7 ! I ~ i 1 1 l ~"Y. ! ~ I,.`d l r i~} i l~ ~ _ 1 ,5 i , I l ,3 , ' l i ~ t°'~' ~ / r r ~ l , r" a~ ~ , ' j ! I I I f i I ~ , l ~ ~ / Ii~ l% A Y~~ / e rr F`f,'~ A , ~ , EA~€ME~T ~ ~ PENSPAOE f r r ~ r I p j ! r ~ ~ r r 1 i , I l + I ! , F ~ TW 4JZD r l { r I 1' ~i~ ~ l ~ ~ i l i ~ / ~ .~r / / ~ ~ r ~ ~ t 1 f !l ! r r f y6 ? s I r ~ ! ~ ! r ~ I / r ~ - S( ~ ~ i 7 t r / ,~SfORMf 1 r l 1 I 1 • ~ 44'1 D~ 1 I ! i t: u ~ 1 ! ! l 1 ~'v ~ r- '1 I / r D# PC W6 - '6fl' 0 ~ ~ i i i~t' ! i ! / p7f r' ~ r / 161A ~ ~ t ~ i~ t! r r r~ ! r r r r q f ~ \ PAU X02-79-161# z ~ ~ f r ? ~ r ! r ~ I ~ ~ c r , ~ r IOkED R-30 _ ~ \ ~ 1 1 1 ~ I ~ I ~~,t ! t % r ~ ~ i / i + I ! I / .4~~ / r 451lD - ~ \ ~ I ~ ~'v i I l l I ~ 1 ~ r ~ r ~ - 1 I ~ Q l t / ~ ~ ' ! ~ I 1 i I I I I / 1 r l ~ ! r i / > ~ I 1,11j~~ I ~ 1 1 1 l,f I , , T ~ , r. '~Si max, ~rj~ ' ~ ~ Q~ r r ~ 451,5 A / 1 ~ I /f l J r 1 ~ % ! r~ yl Y~. 1 r i t A ~ ~ ~ ~ ~~~eAl.~ ~t 1 ~ i / I 1 ~'i i r F 1 % ! r ~f' ~ g~ A ^~v - - 1 1 r p~ ! Ir /r ' lr ~ rr rl / / l i l 1' i'~ ) l .•i~~ ~'R~II~1~J~ W //r i if / fir' ~I h l t' ~ ~ p D k~ 1, ~ ~ t ~~6a.'.~ ® - 1 1 1 ty ! 1 % 1~, f l ~V f r r r l / / , ~ ~ ~ l / A 4 t 7 O r 1 l r! r ! ~ r" r ! r l , ~ DES orREr~ ~ ~ • ~ ~ / , I ~ 1 ~aavrNC wA£~^, ~ \ i / Yh, ~~k"~ ~ i `•~~~,A ' J . \ r r l~ 1>x l / t r J l r r ® \ rris 1 I ! i r 1 l ,r ` r t 1 I~ rr r / ~ 41~ ~ ~ 4560 ! rr 1 ll f f / j l /I r i t r r ' m. . _ r ! ~ ~ , , ~a5 ~ fA91'MENf r I ! 1 ,r ~ ' ! .~1 ~ l' ~6 / ! l ~ !ems y~ tt 7 f\,fi ~ I \ f \ 1+81,91 8011 = r ! ~ , r t ! r' r ~ r ~r I r 1 / I f r r l f r ~ 1+ r / f r,: ~ l , 4~.. , r i` ri~%~`-^...~. ~ ~ i~~ i r / h~ ~ I i h rl il, ~ l -~Idt / ~r , r, ~ ; l ~Dti _ A © 5 .08'R413 I 1 q! r , i r , r r ' r%"'r.^` 4 'I / I~rI" \ /~i / / ! f i c. .l t l / ! '~V ( l~f~ i lI / ? r 1 ~ / . -I \ ~ ~ \ _ t r~. r / / / xx \r RtT ~ ~ i r_ r i 1 ~ r/ r 1 r ~ c f r r/ ;~>r~ Ji I ! i r ! ! / r / ~ Ii013 - r , r 1 r < r , / ,F , ,i,,1 , I r' ,~i ~ r, f I , ~ ~ 1 i/ ~I', /1 ~ ~ I . / 'v y ~ ~ ~ . ~ ~ ! , ~_ti \ ~ti~, -y..l ~ l ~ r ~ ( b" i d ~r ~~s~'~ 455.5. r r r f r~ :rr-.war ~f 1 f FfE~ ` f ! f f ~ ! l ~ r"~ it 1 4 ` / / r' / ~ ~ ~ ~ r ~ _i~- ~ . ~ / ~ ~ / I i e ~ / ~~Sr1''~ r~%' 1 / rig l ~ 1 / ` ® ~ ~~t..,~.A',. l > i'~ I •t ~ A I ~ ; X ; ~ ,r r r 45JA 1r r' r ' ! ~ A . 1 ' ~ v , r 1 t r 1 f r t r1 ~ 1` r' I I t i ~ F , F ~ A ~ / A , / s451. ~ i r / /,~I1~,~11 i / l~ r r~ r / ~ i;.' r ? 1 I I , ~ r r r ~ ~ i ! r ! 1 t=' ! d ~ I ~ ~ / a ` r , A 13 15. 3' ! r l r ! l!r ) r r r,'! / ' - k.- ~ r 1 i / r / ~ ~ 1 I I / f ~ ~ A I , 1 i r ~~~r' ~ t f / i r, ~ / / ~ ~ ll~~f ? ! 12+h3, RO I I r r rr l 1 ' ? ! A r f 1 ~ r r~ N~ ? r l 1 1~ f 1 1 ~1 ~ l\ ? ? ~ ~ v I ~ ~ _ ~ ~0 ,v ~ , l ~`f3PE1J.3PACp ~ ~ ~ , ~ 1 I ' ~ - ~ f V/~ f ~ { / II l I ~ ~ i 1 1 l ! r l ! r 1 f ! f t 1 1 ~ 1 I ? ~ ? , I i r t 1 I r, ! 1 t t iV l 1 ~ ' ~ ~ I 1 i ~ ~ i `1 / l ~ ` , 1I F r~ t r ~w 1 ~li ~lr l 5 • / ~ i ~ A ! r~ 1 i r 1 1 l I ( Ir E r J I 1 t 1 ~Gb.l 1 1 1 :f r ~ V ~ ~V r I r' l! I ' r r ! ! f f i I f ~ t r 1 1 1 i ~ ! 1 ! r ~ 1 X5;.5 , f M n111B ~ I ~ ; / r r I { , >v, ~ / ~:i r I i l i / ~ ~ ~ A~ ! 1 1 1 1 r i { I / ; < r 11 i rr 1 r ; r r' r ! ~ 1 I I I ~ i Ih,; rr 191 f.A Ff ~ ~ ~ ~ 1 I 1 1 f I, , r 1 1 l I I f / , ~ ~ l~ X 1~ / 1I/ f.A FT ~ V t l ! ~ ~ ~ f ~9;' F , , l _ --'_t- ) I I/I ~!{II 4 / x ~ ~l~ 4RFr FFf~ r ffE. r r ! f I I r f I r r i'I r \ .5 t ~ 457.5 ' r r r i t q f i I I I i,, f r .~!i~'' S~ r 1 j 1 ~ r r 456~j ! „""7 I ! I i I .%7 I ) ~!i ~ i ~ 1 \ ~ i f 1 i ~ c , > / % ~ I I' ~ ~ I ~ ~ lI lI {t I 1 ~ , ~ ~v . ~ 1 1 , , r ~ , f r r I c , I ! / . ~ ~ ~ Fi I f I ! r e r i ~ i' ~ r I ~ / r r ~1~ / ~ 11 ! ~ 1 1 ~ ( / ; / I ! 11 ~ i Q~ N ~ I f ! ~ 1 ! I r ,l `rt ~ 'mil` T ~ i i I i i 1 I r 11 l,1 ~ I t \ l \ ~ r r ' ' ' ' b r ! I ! ~ 1 I 1 ' w 7 .tli fU~ 1 ) ~ i J / / I I I 1 i 1, 1 1 l/ ~ III// fUE1y ~ l i t l ~ I ~ i , 1 7 ~,i ;i i, ~ l r l / ~ ~ rrll/r r~ ~ ~ ,,,.I / I I 1 / ; r r' I !ll 1 ~ I/ 11~' , i ~ , , 1' r ~ ~ . " ~ 1I , , .I l~ { 1 ® 1 / ~ , 1 h I 1 1 / 1 i r ~ r a I , f ~ r I I I l r ! IW 96 , u , r`' { ~ ~ , i I ~ / ~ lfr~!lI ~ ~ ~ r 1 i ~ ! , !151.51 , /I I i -L-7w- ! { ~ i7ll;;~ s ~ I r , ! 1 1 I' I !I 1 1 I < r' 1 ~ I ! r i y, A , --7 !{ilr 1111 1 ~ 1~ I/I if,1 I ~ r 1 1 / , ' ~ / ~ ' I j I I 1 P1~E 1 ~i' ~ ~ i, I ~ 1 J ! l I I / i! , I I l ~ ~ / ! ~ r , {h 1 ~ r T ~ r r"- ~ =416.0 ti l 1 , r r r r t % STORY' , ,'bgp = 9.0 / / r~ r i + r r ~ i 1 . ~ r% .,~,~.I~ /~C ; ! ! 1 / 1W=458.0 it l~j! / ; ~ ~ I/{I/ lip' ~ ~ r I; I ~ r ~ 1{ ~ ~ ;t i „ - "5~ l/ ` =464. 1 t ! I ! / ~ _ / i/ r i I r ;:44 (l ~ 4 t l r r t3JY=45 i r I ~ t ' ~pE ! 1 1 1 r ! r FASO~FJir ~ ~ / r" ~ / i t I S I / ! r~~ f ! r ~ 1/ i r s 1 i t .`=--,c. ';.r i BW-48.0 1 1 r; t r lr, l/~ ! 451:. ~ 1 ~ r<'<!1 r" l u ,'il +r ~~t ~ ! ~PIVCE I ~ I / ~ i / s' % ~z~ l ~ l ! ~ f ~ r I/11,11; 1 / -v. 1 f ,tt ,/i ~lr ~ I i / r 1 r - 1 ~ ! t t l I ~ I f ~ v~ ~ 4 t~ , i / 1 1 i 1/ I i~ j n t i r't ail, l~ ~ ''~Irll~i/;'i STORM DRAINAGE SCHEDULE STORM DRAT R~NfJ1NG WALL 16t°~ i R r 1 W;<45 .0 / / i ~ _151.0 I I ~ Sit' ( ~ 1 r _ t l; ~ ! / ~ . r / l t ! 1 1 1 i Iii i ~ ~ ( / l ~ ~ i'~ ~ U I rI -451A ~ ~ I~{~I~r_li'I i ~ i r ~ ,~~0 ~ 'r,"' t~ ~ lr RET NC W 1 1 1 1 i r" , FFFs J ~ r / r, II,,; / , NAGE scHElx1LE ( er of1JERS) NOTE, - \ Cormerstone Park -Lot 6 Comersbrre p~ _ ~ g I \ ~rl, / ry /.,-l , (DES 9Y E~S) / / 7` r 1 1 ~ r FFE' 1 4510 ~ ! ! r r ~ ~ ~ I r ~ ~ , r~ , ,r~ / rk~ L' 1 I ~ / 1 1r11` r ~ ,/r {,/i,I ll/ INSTAIl ALT FENCE AT TOE ,OF SLOPES PRIOR ID PLACING FlLL 1 Pipe Actual Pipe Aatrral USE ONERSION DITCH BERM AS PRIMARY SEDIMENTATION CON1Rf9l. ~ L ~ i b ; ' II a~ r tfz O~~i !~~'7 xr ~ L ,r455,~~ ~ ~D ~ ~ I li'ltft Y, ~ l 1-f /r/l l/~~ . WEILAWDS h ` ~ quo; I i l ~ j -,'l/! ~1 I, , 1 J I ~ ! 45~D i` / ~ ~ lI!l 1 I~! Drai?age Pipe Pipe PQe upper Lauver Pipe Drainage Prpe Pipe Pipe upper Lower Prpe DEVICE DURING CONSTRUCTION. SEE DETAIL 'A' BELOW. ~ ~ 1 / I 145A.5 , ~ / ~ i ~ ~ ~ I ~ ~ e I' \~.~--.._..i „~~..~,i..'' ~ I if ,'!~1 ~ ~x ~~I{ll ! ~l l ~f ! / 1 r lr I i I 1 i~ i i>/ 1 t I ,j ,r~ i,, l /r ~ 1 ~ ~ -r' ~ 1 ~ lr~ , 1 { ~ t 1 i r i1 r ~ r, t'tE~AiNIy ~ r r ~ ~ ~ > t ! '7 l l l i=tom To Ares Material Diameter L Invert Elev Irnert Elev S From To Area Discharge Material Diameter LengBr Invert Elev Irnrert Elev Slope ~ A Q1o D L S ' A Q1o D L S ~ / 1 r ~ ~ ~ 1 1 r / 'D ' ,r .,I ~ I r ~.1.. trl, 1 ill i,/I A / / 1 1 / ~ r '19 ~ l t(r~ i ~ / llll,/. ( ) ( ) (ft) 1 r I l ~ ? i ~ r - r 1 f / t / Ir l/ f r tr / ~ ~ ~ ~ / --_..L. i.. _-.r--~ - ! ! ! ! i ~j i lj , / r l l 11 ~CJF- $IONM i l r ~ 1 11{! Ak . ~ ~ ~ 8W-458.0 ~ ! ~ r ~ ~ ~f, it ! 111 r,pRy < l ! , ' ,7W-4~1'LD , ~ i,' , r ~ t; / 1 ~ i l 'Ill , YI 901 CB 901 020 0.71 RCP 12 76 453.00 452.24 1.00 I r 11 r YI 601 CB 601 0.45 2.41 RCP 12 80 463.00 461.87 1.41 CB 901 CB 902 0.50 2.18 RCP 12 26 452.04 451.78 1.00 ? r rr' I ! ! ! ~ g i ~ r i / i' r , ~ ' ~ L, . I D BY OTHE~3) 1/ ~ r , . ! ~ 't I , ~ , l lllj FAS~1(ENi 1 i~ r / i / ~ 1 I ~ r ~ r ~ i ,1 I r ~ i' / 1 ri Ntt ~ ~ / l! 1/' CB 601 CB 602 0.70 3.69 RCP 15 37 461.62 461.24 1.03 ~ CB902 JB 901 1.31 5.76 RCP 15 107 450.09 448.34 1.64 ! , ; CB 602 YI 602 0.95 5.08 RCP 15 80 461.04 460.24 1.00 SILT FENCE ~ 1 I f 4 ;;li~lj~ i \ ! ll~~, ` 11 ~ ~ 1 I 1 i ' y~~y,i / r / / ~ I YI 602 YI 603 1.01 5.46 RCP 15 21 JB 901 CB 904 1.31 5.71 RCP 15 136 448.14 446.03 1.55 } c\ ~ 448.52 448.20 1.50 C~04 905 2.15 9.62 RCP 18 46 445.78 445.32 1.00 t \ v ;r ~ ~ i i' r , ~ . 1 1 .,^"7 1' '/rr! f ~ ltl'a,l~Ilr,' i YI603 YI604 1.40 6.44 RCP 15 87 448.00 446.69 1.50 C~05 C8905A 2.59 11.89 RCP 18 10 445.12 444.92 2.00 ' ' 1 vj-i t 11 ~ / L.-1 r r i i" ~ ! , ~ N q ! f ~ /1r I j. (l f l i r ~ I 1 1 r' r , 1// ~ 15', ~fORM ~ ~ ; h I t f I d 1 % ~ l I r, i ~ r i r r a6 i! 't I( Ilr ! ~ ~ , 1 , 1 ~ 1 f DRAIN4CE 1 / I l 0 ! ~ ~ l/ l ~ l YI 604 CB 604 1.65 7.15 RCP 15 30 446.49 446.04 1.50 CB905A FES 901 2.59 11.88 RCP 18 94 441.93 439.00 3.12 i 4,- ! / / , 1 / I , ~ 'A602 i ~tllr r- 11 i l I F ~7T ~~yy~aK~Y7~7A/~ / / 1 / / / I l / / / ! r ~f~~~! ~ i ~ WrJ~l fi l~~ 1 CB 604 FES 601 2.50 11.58 RCP 18 56 445.84 445.00 1.50 , / i I / ~ ~ 1 1 1 I ~ r iW~455 { r`~ / r `ry' ~r_~ ~ i ~r t ~ , i i1 ~ ~ , 1' ~ I" ! . y~.._.-...; - l' ,i~ ~ f i r ! ~ I t~ ~ \ l! r r l r r CB 603 FES 602 0.50 2.82 RCP 12 38 ~ ~ ~ ~ 0.36 1.30 RCP 12 16 450.50 450.34 1.00 t ~ / f,~ 448.00 445.00 7.89 ~ , i 1~ / i ! ! l--~",`'"'_ ' f 1~! I 1 I l l f .~._..a P' " i i .,t~ y ~1 I 1 i ! / f,.~- ~ l i I` r~~-- ~ ~ ~ ~ il! , f ~ ~ f ~ ! Ill I , YI 903 CB 904 0.19 0.47 RCP 12 171 448.00 446.28 1.01 ~ ~ / CB 605 CB 606 0.55 2.42 RCP 12 95 447.64 445.22 2.55 NATURAL GROUND ~ ~ , _ ,r'x 2o~'crn oF, I ! , , ~ , ~ ~ ~ 5 , ~ , ~ P/ _ ~ ,~rr CB 606 YI606 1.10 4.99 RCP 12 92 445.02 435.82 10.00 I l ~t / ~ l + r , r IG ~`ANITARI' ! I / 1 l( I r ~ i ~ I~ r~r I~ jx 'l l tom' 1 ~ ! ~ / / ! / r 9 ! I / ~"'1 _I~', ~ N ~ iI +1 1};; fil~t~ r~u !'llr~~~ll( EWER EASEJGENi ntlNN . ! r / ~ fFE , r r , . I Illr r t ~ r 1, YI 606 FES 603 1.16 5.39 RCP 12 30 431.00 430.00 3.33 ~ ~ ~ ~ 0.17 0.49 RCP 12 78 447.00 446.23 0.99 DETAIL iA ~ t' ~ ' C8906 C9 907 0.36 1.53 RCP 12 121 446.03 443.12 2.40 t1 i i i / ! ! i ~r,., _ Ii i li / ~ ~ ~ i ~ . I I~ ~:fll,`+ ~ f t /l/l/~l;lr~ 1 Bbt2000, PC,~39 r~ NlBYO ) ! ~ , ! ~ r~ i ~ ~~I' FFE i 47~D i ~ 471.0, l l~.~Ilri ~ ~ llr,r„rl+ t ~ ! ~ i ~ 'i r l { , YI 605 CB 606 0.20 0.11 RCP 12 56 445.78 44522 1.00 CB 907 HW 901 0.78 3.98 RCP 12 24 433.00 432.00 4.15 ' ! ~ f i t l " 1 I l 'V ! ~ ~ G 4eso I , , fl' I~ l , ( RCP =Reinforced Concrete Pipe, Class III RCP = Reirrfaroed Corraele Pipe, pass III ` 1 + I + I + ' i ~ r'~ / „ ~ I l ~ ~ ~l ~ 11 r, l r rl , i i l 465 ~ r r`~ ~ l t l ?~,tr i![ 1171, r;l~ / - ~ ~ 1 I I I i r ~ !s f I f ~ r i j t i , ~ ! I I l r l~ ' ~r I b r ~ I i l 1, ; , I • l,! r; llr r r r ' ~ ~ t 1 € r r' ! t ~l4 ~ i<<. . i' ~ ~t'll t11! l l' ' r LEVEL SPREADER DESIGN SCHEDULE l 46.0 ~ ! ~ ~ ~ rl! I l ' l q s rlt t r STORM DRAINAGE STRUCTURE SCHEDULE Cornerstone Park, Lot 6 & Lot 9 STORM DRAINAGE STRUCTURE SCHEDULE At Flaw Entrance End I / r t i I + f I~ I .J + ;J Hill ~flll ~ I I ! l / G s ,;.I 13 f~ ~ ~ 11 I't t i i j Comerstone Park -Lot 6 ~ p~ _ ~ g Structure Q2 Width Width Depth Length t`~ r l ~ I~ ! _ I' ' .:H ~ 111, '1 f + t cfs ft. fl. ft. ft. Type of 'Top Shucture Typed "Top Structure FES 603 4.3 7 3 D.5 15 r ll / i ! ! l 1 ~____1-- r , + ~ _-~-r~l--'~ ~ i i ! j ~ ~ ~ ~ III , l~l f f f 6 i I l l 1 r ~1 ( ili~l ~~+a rr ! I ~ / -l--I r 1 ~ r ~ i --4_ ~ (r ( al J tP0.+J0 R 7= + I _ r r I 1 r Ili ~ ` V~ 1 h 9 .AS IXrROlJ4 i l Inlet# SUucture Elev Depth Irdet# Slroctrne Elev Depth FES 901 9.9 12 3 0.5 30 _ ~IJ 79.7 l ~ f 1 f r i 1 ~~ll! I l ! I l I ~ I f t r ~ Orl( /1 ~ l u I~ t V rYlir! I i t l ~;f 1 7 I ~ CA,R i ! t ~Il{'r ~ ~ i~Illjlll t! 1 i I I~ f itli III~,I(h~ a HW 901 3.2 7 3 0.5 15 ~ 7 ! r ~ , I'r t 1 ! i~ ' ~ .!I i W ~ YI fi01 City of Raleigh Type Yard Inlet (24' x 24'~ 465.50 2.50 YI 901 ply d Raleigh Type Yard Inlet (24' x 24') 455.50 2.50 r Note: For level spreader design layout, see defat. CB 601 NCDOT Type Catch Basin 465.62 4.00 ~ 901 NCDOT Type Catdr Basin 455.88 3.84 , ! i I I i t i { ~ FI;Ff i ~ i ill ljll~ ~ r' , - ! ~r~ l E t f ' 1 k ~ ! r I I II I I ETA i3,i 1.67 __.._t--. ~ I i f o ~o.,. i t I t f! , I ; c 1 ~r _ CB 602 NCDOT Type Catch Bash 466.31 5.2T (~02 NCDOT Type Catch Basin 455.88 5.79 - + r, > ~ r/r i, SEAL - i sr a+ Roos ! ; l I fFE l ~ ~ r , 4, r, ; r i ~ , ! _r f ~ ~ 1 ffE- ; ~ I ~ 471.0 i IIIf, l•• lr !',f+l I ~ ~ YI 602 Cit of Ra ' T e Yard Inlet 24" x 24" 465.00 JB 901 NCDOT Tra18c Bearing Junction Box xd Manhole Crnrer 452.86 4.72 y legh yP ( ) 16.49 STORM DRAINAGE OUTLET PROTECTION SCHEDULE 0 i I i fFE ; i ~ { l ~ r l r ~ i r { ~ 4~.0 470 ~ ~ i r +ul,. t I~l.t" FF~' r 468.0,~~ i I i ail+fll"~ I l sllr,ll~ I 1423 s. o YI 603 City of Raleigh Type Yard Inlet (24" x 24") 452.50 4.51 t~ NCDOT Type Catdr Basin 449.96 4.20 Cormerstone park, Lot 6 & Lot 9 ~ ' ' 495:0 I I , ~ ~ ~ + + ll ! ~ ~ lru' ~ l ,4510 ~ l f + l i 8 i~, it ;i rf ~ ~IN~` N YI 604 Cft of Ra ' h T e Yard Inlet 24" x 24" 450.50 4.01 08906 NCDOT Type Catch Basin 450.37 5.25 y ~ ~ ( ) At OuBet Vebcit T CB 604 NCDOT T Catch Basin p3905A NCDOT Type Catch Basin 450.39 8.46 y, V1a Pipe Apron Dmensbns Rip Rap Stone r ype 450.23 4.39 Number (ftJsec.) OuOet Wdth Length Depth Type S¢e, dso W r r I ~ ~ ~ ~ r Stone a ~ ~ ~ 7 A l i w ~ r, r: r 1 ~ I ! ~ r _ i il~ j ~ r f t o CB 603 NCDOT Type Catch Basin 458.00 10.00 n ~ City d Raleigh Type Yard Inlet (24' x 24~ 453.00 2.50 ~ " S¢e,dw b I l I I A l 8' I ~ i~+u ~ ~ f~rlfll ~ Y~ I 5 , 0 ~ ~r I 3 ' / , ' l__. ~ II it f II i tin ~ FES 601 82 18 RCP FES 4'-0" 9 -0 18 Class B 6 1 Z~ / ! I ' / 1 r iJII i J i it 1 / 1 , 1 i I ~ CB 605 NCDOT Type Catch Basil 451.60 3.96 YI 903 City d Raleigh Type Yard Inlet (24' x 24~ 453.50 5.50 FES 602 11.0 12" RCP FES 3'-0" 6'-0' 18" !Gass B 6' • CB 606 NCDOT Type Catch Basin 448.97 3.95 FES 603 92 12' RCP FES 3'-0" 6'-0' 18' Gass B 6' I f / ~ l "~-r I ilt(I ~ 11fI I ~ - l 1 / / / j T 6~ , I 15' GRM i 1 b ~ l ~ ~ I i ~ ~ ~ , ; ~ ~ 1 / { I~R ra~b ~ r I ri ~ ,i,lir ~ G v n l z~ PER 1 / l ~ l '3 ~ ~ f! ~n 1 w YI 606 City d Raleigh Type Yard Inlet (24" x 24') 443.00 12.00 YI 904 City d Raleigh Type Yard Idet (24' x 24~ 449.50 2.50 p p3906 NCDOT Type Catch Basin 450.29 4.26 FES 901 11.1 18' RCP FES 4'-6" ~'-0" 18" Class E 6' ~ ~ l { I / I 7 / / EASEMENT / ~ , ~ t i ~ ~ ~ f l f' ~ 1 y l/ / l II /I I I ~ l I I 1 i i Ili ~ i~If Ili ~ N YI 605 City of Raleigh Type Yard Inlet (24" x 24') 451.50 5.72 ~ 907 NCDOT Type Catch Basin 447.16 14.16 HW 901 9.5 Headwall 15'-0° T-0" 18" Class E 6' I I / 'q"" ~ l l I I + ill ~ ti. iit i t ~ t l I 1 I""'/I / I t~ ,r I ~~i ~ lil l ! N ' =Top of Bade d Curb for Catch Basil . _ - Top d 8adt d Curb far Cakh Basle Note: Provide ftiter fabric unerliter specified as Miafi 140N or approved equal. / / I +i ~ ! i i f ! 1 I~ I' III I~ , ,i,l,l I LOT 3 l I l ! L.,OT;4 r ~ i f,,lfi , ~ =Top of Grate for Yard or Drop Inlet = Tap d Urals for Ysd or Drop Inlet Pipe ou0ets shat have a reinforced concrete pipe (RCP) flared end section (FES) i ! 1 ! ~ : i i i r ~ =Too of Junction Box Manhole Cover . r,., „r o... ue.,r,,,r- r..,~ „x,.....r,. Designer Scale CAD File °o Withers Description Date B Ravenel 14, L- -.A,- -A a Engineering and Surveying, Inc. I lD6 FROM T REMMM 5 f M OT 9 W&R 1" = 40' SHTSDECI STORM DRAINAGE PLAN Drawn By Date Sheet No. JAC 01/15/01 r 0o CONsuc 111 MACKENAN DRNE, Cary NC 27511 Phone: 919-469-3340 Fox: 919-467-6008 Checked By Job No. IE s 0 111 200147 o ' Y ~ _ Z - S-84-2000 L _ INDEX OF SHEETS S~~ STORM WA TER M ~ o f-i r~~ - RALEIGF~, N. 9~ 4 GMENT POND o~RALL STORM WATER MANAGEMENT POND PLAN SHT i CONSTRUCTED WETLANDS POND LOT 1 SHT 2 Vi Vi ~O I - `~fZ~ LOT 14 ~ % _ _STON~ilS01~DQ~VE ~ ~y, _ - ~ - LOT 11 ~ f -LOT 13 VICINITY MAP ~ I SCALE~ N.T.S N T S ~ ' nor tz ATiEMfON f~ON11BICi0RS - n~ coxsrmrcrrrni conr~cmic a~+oxs~.c rox n[ mtraun cr wror ~ ,w° spa ns "rrA"~° "'x~ "i.ws ~s acsr°'a~ee~ `ar "'e LOT 10 3 LOT 8 CFNIRW OICbIEERIMG DEPMI4EM AT,g~]~jQ. MO 1ME PU9JC UIIUlES OEVMlMFM AT H9o-1,~ AT !FAST nr~rv~~ xay~ err ro eccreudc ,uw or n~aie corsmucnai. I ~a uae ro Nona emx arv awaerarrs M aowur a~- era c ~ ~~yr% croxsimcno+t xu x~sar a~ n+e ~suvcc os wartraw ~ ,wo ecaa~ xer+sruunav or,wr xeinx as sew ricr.mES Nor uaa~crm I „s LOT 1 ~ AS A l~SIA.l OF THIS NOiIFlG1i0W FNLIIq[ a~• FAILURE TO GLL FOR /NSPECiION. A5ALL A OOWNSINFAY PLUG fNY£ PERWIIED PLWS LW THE JOB SITE Q4 ,WY OTHER NgAMW OF dIY CIS IBVDGH ~ erwaaas x~u ~suu ~v ~ ~,wo ~ Exn~k_-. ~w nmrae ~aec LOT 7 w'~ era'. '°~p LOT 2 G~~ / ~ _ "~s~i `l \ ~ - LOT 9 `~°m ;;,gip LOT 6 ~P ~ LOT 5 ~ ~ ~ I 0 /,'J`'~ • Y W ~ LOT 4 o LOT 3 ~ - LEGEND ~ ~ - U Z U DESCRIPTION EXISTING PROPOSED / _ EBENEZER CHURCH ROAD (SR 1647) ."e 2' CONTOUR INTERVAL - ~ i,- rc 10' CONTOUR INTERVAL PROPERTY LINE - - - - - - - - ROADWAY CENTERLINE - - ~ RIGHT OF WAY LIMITS - - - - - - ~SEME"T ~~"E - - - [ PREPARED BY• CURB 8c GUTTER - - ~ ------OWNER ~ SANITARY SEWER FACILITIES • - - o STORM SEWER FACILITIES ~m~ W I T H E R S ~ RAV WATERLWE -ua--- R FIRE HYDRANT ASSEMBLY t+~«-0a {!a ¢~«?~-gyp AV E N E L HIGHWq Y 70, L.L.C. ~ FENCwcsrRUCruRE -oo- ENGINEERS I PLANNERS I SURV SURVEYORS 3209 GRESHAM^LAKE ROAD e WOODSLINE /YYYYYI N/A 117 MacKenan Drive DUAL IJO-IOU RALEIGH NORTH ~ WATERWAYS N/A Cary, North Carolina 27571 CAROLINA 27615 ~ te1:919-469-3340 fax: 919-467-6008 TELEPHONE.' (919) 556-4310 - SILT FENCING X X X # -I www.withersravenel.com 9 g y ~ \ ~ / rI ~I-TITI - 1 NOTE: THE OPERATION AND MAINTENANCE I I I I I I I I I I I AGREEMENT EXECUTED BY THE OWNER SHALL BE CONSIDERED PART OF THE STORM WATER MANAGEMENT PLAN. ALL DEVICES HAVE BEEN DESIGNED TO REMOVE 85~ TOTAL SUSPENDED SOLIDS (TSS)IN ACCORDANCE WITH THE MOST RECENT VERSION OF NCDENR STORMWATER BEST MANAGEMENT PRACTICE ~,~~m 1 ~ EXTENDED DETENTION WETLAND POND 3 LOT 10 MANUAL. 401 WATER QUALITY CERTIFICATION AND wove vans - (PREVIOUSLY APPROVED) ADDITIONAL CONDITIONS AND NEUSE RIVER BUFFER RULES, SEE DW4 PROJECT X001330 & ,001530. NOTES: (PR E' - LEVEL S (PREVIOU . ~ ~ _ - J' , . 4 ~ 1. DESIGN PLANS FOR THE POCKET W£1LAN0 PROPOSED ~ ON LOT 4 SHALL BE PROVIDED TO DWO WHEN THE LOT IS DEVELOPED. 2, ANY CHANGES TO THE STORM WATER MANAGEMENT PLAN / SHALL BE SUBMITTED TO DWQ. 1 }'~F ~ i _ ~ ~ EXTENDED DETENTION WET 1_ T 13 (PREVIOUSLY APPROVED) ~ ~ ~ EXTENDED DETENTION WETLAND POND 3 ~ " (PREVIOUSLY APPROVED) EXTENDED DETENTION WETLAND POND 2 LOT 10 Re ~ ~ - EXTENDED DETENTION WETLAND POND 2 LOT 7 (PREVIOUSLY APPROVED) ~ , (PREVIOUSLY APPROVED) ~-T . EXTENDED DETENTION WETLAND POND 1 LOT 10 ~ - - ' ~ r (PREVIOUSLY APPROVED) ~ ~ _ ~ - - / i Q` i sue' ' x~s,~ . Z _ _ i2 i , LOT 8 L{~T 12 " `3 d' ~0 ~ ~ ~ EXTENDED DETENTION WETLAND POND 4 LOT 7 ~ .k - _ ~ J__ , , - ~ e , ~ - ~ - : uACANr ~ .z (PREVIOUSLY APPROVED) ~ , , ~ J / ~ L ~4~ . i \ y ~ I ~ / G v ~ VACANT i J ~ ~~t / / t^~ ~ / / a r C - - ~ ~ , „ G,y ~ .Q,. ~ / / v ~x ?3.~ ~ ~ . ~ ~ I,OT 7 \ , ~ " / ~ ~ / ~ ~ , t i A t ~ / / F ~ ~ ! ~ \ \ " ~ ~ ~ ~ / i / ~ / ~ / \ / ~ / i, ~ ' / i / r ~ ~ _l~ - ~ / a / _ I . ~ OT 5 / ~,t ~ / / 1 ~ ~ / / / / / / / / / / EXTENDED DETENTION WETLAND POND LOT 9 ~ / / ~ (PREVIOUSLY APPROVED) ~ / / / / / ~ s,+ / / / / / ~ DRY DETENTION LOT 6 ~ ~ - ~ ` + 'i ~ I ` I \ / LEGEND ~ / (PREVIOUSLY APPROVED I [ _ _ _ ~ ~ 1._ . _ - I __1- - ~ / / ~ / / ~ 1 ~ DRAINAGE BASIN / / / / ~ DELINEATION LEVEL SPREADER LOT 6 / / P w / / ~ / / ~ (PREVIOUSLY APPROVED) - ~ ~ / / ~ w / ~ / / e`eeeeun'nrrrr J~ °ri / / CARP J , ~ ~ GRASS SWALES LOT 6 I ' ~ LO 4 a ~ \ ~ ~ / / ~ N v t ~ 9c'' / / ~ SEAL a tl (PREVIOUSLY APPROVE l ua n!r W (~acANr~' / ~ i w ~ / / 18498 ~ I ~ ) l~ I I I / i~ ~ io Sr/~ ~~Fh t~~~d ~ ~ Z I / / / r~"Y .~~GI ryE.~~~o / / •PtiF ~ _ - - - _ ~a y ~ . _ / / L. - / / 'relerrer e e a POCKET WETLANDS LOT 4 ~ i' / / (FUTURE DEVELOPMENT) ; , ' ~ _ ~ ° (SEE NOTE 1.) ~ _ - ' / / 150 0 75 150 300 ~ B00 - . - _ o ~ _ - - - _ / / - i AQ SR I W) _ _EZ I inch = 150 ft. RO ER - CHURCH EBEN d g - No Revision Date B Designer Scale . Sheet No. 0 1 RENSION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC W&R 1° = 150 CORNERSTONE PARK WITHERS R"ENEL I ° 2 REVISION PER DWQ 2nd COMMENTS 6106102 JAC Drawn By Date n I PLANNERS I SURVEYORS ENGINEERS NORTH CAROUNA OVERALL STORM N 3 TRACT 1 POND SUBMITTED 8/15/02 KLJ Checked By JAC Job No. 11/28/01 RALEIGH, c 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 Pax: 919.467.6008 www.withersravenel.com o JJJ 200147 Y . r r~ ^ I • FES 1 33 CANNA FLACCIgA . . 97 JUNGU9 BIFLORU9 _ \ \ I ~ 396 ~ \ \ \ \ ~ I a \ a a \ \ ~ l I \ a a s a I A A LATIFOLIA a a a 208 5AG TT RI a a a a a a a _ ' l a a a a * a a a a p? ~ p 20'_D NAGE EASEMENT ` ~ F a s a ppppp pppDa a s r a a a a pppODppppppppD pp a a a I ~ a p0 ppp a a a a a DpD~ppppODpppppD a s ~ a a s a s a Dp ppppp0ppppppODD a a a a Op D D pp ~ I a s a Op ppppp D a s a a s a a gpDpp a a a a a ~ I a r a a a a a a a a a a a a a a a a a a a a ' ~ o. ~ I a a a a a a a a a a a a a a a a a a t. / / ~ I / a a a a a a a a a / a a a a a a a a a / a a a a a a / / / / / a a a a a a 3.J 5 ~AURURU~,CI+RNUUS a a a a p a a a a a a I ~ a a D a a a a p a r a Opp ~ a a a a a ppppOppD a a a a pp a , _ I ~ a a pppDDppDppO a a a s a* ppp a s _ ~ - ~I a a DgpppppDDppp a a s a s DpppO a I a a s ppppp° ppppp a a a ppOq a I- ~ X Hfl~12 o I ~ , N a a pOpDpppppDp a a a * Dpppp a a ppD ppDp a a pD ~ \ a a D pppD a a pppppDa a ~ a pppD pp a a p \ a a p pppD a a appppD I ~ \ \ ~ ~ \ \ \ a a pOD pppD r a ppp a a a Dpp ~ a ppp a I D ppD p a a pq a 0 I a a Dp ppppp a a pOpp p a a Dp a a ppp a ~ ~ p ppp Dp a I a s ppppp ppp a a s Dpp°pp N RATA a appDDp p a a pppD a I I 58 N I RU a ppppp0 a a pD s. a pp a Dppp _ _ - - _ • pppD * D a D DDpp a a pDD a - . , - a pppppppp a ppppp0 a A A C a s DDDpDpp a s a DpDpO a a I A A TF LIA \ • pDDpppO a Dp ppp a i ~ a a pop pap a ppppp a 20 TA p0D a fJDDp pp a ~ I 48'0 CONCRET " a s DDD a s DDppp a s ~ I I s ~ ~ RISER W/TRASH i a a s a DDppDD a ID I I V NI a a a DpppD a I ; RACK 6 I OLI a a ~ a a a a a a a ~ a I I ~ ~ , a a a a a a a a 55' PRIVA~f DRAINAGE`:EASEMENT I , • , BM 2000 PC 22,38-2239 ~ ~ ~ , I ~ : , I • ~ ~ • ~ B 5a NR - I I ~ r ~ - GU5 BIFL ~ ~ ' ~ 57 ~F_?a RCP 3 ~ • _ I I _ • I . z c LASS 'RIP-RAP I IPATO PAD ~ ~ ~ ~0 ~ s SSE R F C ~ UNQERLI • '~"'..r- i ~ o ~ 390 , N I I' - I _ O \ v J ' s:. w 1 - LAN VIEW \ ND D. DETENTION WETLAND PO I ~ , / HIGH MARSH =20 \ ~ 1. 9,338 SF FORE 8AY \ 2,042 SF ~ \ I: ~ \ \ ` . , z1 _ _ I ~ _ _ _ PLUG 70P F ~I _ _ _ _ _ _ ...PIPE- ~ t EXI TNVG GRADE I Summary Information LLl - _ _ NOTE: AL _ G BARREL CE TERLINE Cornerstone Terrace FORE BA 402 _ _ - - _ - ..FLAG -STEM _ 5 -f~RRfFfCf Extended VWtlard Detention Pond 1-Lot 1 U~ 1 ' 1 ` I ~ 2,159 SF _ _ - _ ~ 5 AT 3- _ _ _ ~ ~ - - - ~ \ Stain Qpeak 0?peak Max. Max- Q - - . . -_Y.. _ _ - ~ \ Frequency In Out WSEL Pad Storage ~J ~-Ll FRAYING WHEEL I --ANTI-VORTEX DEVICE SEE- -----Yc --~------ft• i.._ / TOP OF DAM EL=39 .0 - ~ WSEL i _ L ~ 2 16.4 0.50 396.80 0.531 / 3 _ _ - - 3 SEE CHART ~ , , , . o. 5 ~ W / 398 -PROPOSED GR DE , - , ~ . - . ~ E51: EL-397,0 ~lOR ~'1?OL 10 21.6 1.63 397.08 72 / / ALONG. REL _CENTERL . 1 _ _ _ _ - 100 25.7 14.4 397.50 1.013 LOW MARSH - LP OOLAR ~ ELEVA ION 396.00 ANTI 5k A , . - , r , 396 _ SEE DET IL - 6 x~TEE' <.:><, ~ _ ~ f„~ 12,415 SF _ _ _ _ 48~0 PRECA T REINFORCED ElevatiorTS a I ' HIGH MAR '---Y-.._ . 1 - - ~ - - _ CONCRETE _ NHOLE _ RISER " 394 _ _ _ ( ) Basin Botton Elevatiai 394.50 it. Q , INV- _ I _ _ _ _ _ Permanent Pool Elevation 398,00 ft. IN =392,4,E - - _ _ - ~ • , ~ ; BOTTOM OF MI RO POOL=393.0 •s s o _ _ 397.00 ft. '~/~Q ~ _ - v _ „ Crest Elevation 392 _ _ i • ~ _ ~ I . V /0 SL V I'L v ~ b v ~.--._J \ ` . \ ~ . \ i 5 LF 24 ~ RCP LASS III ~ B0 TOM OF ,WETLA _ =394, 50 Top of Dam Elevation 399.00 ft. N I _ CLASS. RIPRAP _ - _ 8x6 TEE \ EAT LtAST- I ~ DISSIPATOR -P 18- -THICK - _ _ ANCHOR MANN 390 Areas `I R INER 12 INTO CONC TE FO~?T1NG 28 401 s .ft. I SE FILTER FAB IC UNDE L _ _ _ Permanent Pool Surface Area q _ _ 4 NR GATE VALVE - _ _ Drayage Area 8.71 ac, 388 ~ _ _ _ _ £ NCREiE f00T „ _ _ ~ , \ ; ImperviouaArea 4,95 ac, . _ _ _ (fl x 81N x- 18 _ a MICRO POOL USE 500 si CONC ETE ' t ~ Other Parameters I \ ` 2 561 SF \ ~ , Design Rainfall 1 in. runoff ~ o rn r. o o Drewdown Device 5"Orifice o CD ~ `t ' N cv ~ ~ ~ w p ~ rn rn Min. Drewdown Time Req'd. 48 hre. ~ M ~ Cf W O I ~ p~ ~ 01 ~ ~ M M M 'd' ~F M M M M ~ M Min. Detention Volume Req'd, 0.399 ac.ft. I--- ~ Detention Volume Provided 0.868 ac.ft. - - I z ; W , 11+2 10+80 11+00 I 1o+OO 10+20 ~o+ao lo+so NOTE, - "D RCP SHALL BE TONGUE AND GROOVE W CONFINED '0' RING GASKE . 24 ~ RISER BARREL PROFILE VIEW 1 V -C-361 LATEST, I MEETING ASTM C-443 LATEST AND JOINT OF ASTM 1 =10 HORIZ I ' 2. KEEP 6 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN HIGH MARSH W ~ ~ \ _ 1 -5 VERY THE POND IS NECESSARY FOR MAINTENANCE PURPOSES. c LLl .y . ~ `t O NOTE A a A THE CONTRACTOR SHALL SEED AND , o P E 8c DRILL MULCH ALL BARE AREAS EXCEPT IN AREAS IP ILL 4 REBAR 12" 5 ORIFICE N WHERE PLANT MATERIAL IS PLACED) AFTER PLANT LIST - o,c. EACH war CONSTRUCTION IS COMPLETE SILT FENCE NOTE: a --~_~,w~ - _ _ - _ ANri-voRrEX uEV1GE (SEE oErAIL) Common Name S acin QUA SPECIES __1_._._~_-. PRESSURE REIJEF o 0 0 HOLES , 2" DN SHOULD REMAIN IN PLACE UNTIL GRASS PLACE n GRASS HAS BECOME ESTABLISHED. SUPPORTS AT 3' PLAN VIEW _ o c TOP IS ID CAGE CORRUGATED ' FROM BASE Canna flaccida Golden Canna 3' o.c. ~ METAL OR I/8" STEEi PULE r ~ tv PRESSURE RELIEF HOLES AWY 144 BE OMIriED, IF ENDS Of CORRUGATIONS ARE LEFT BARREL 6'NL1" TE Iris vir inica Blue Fla Iris 18" o.c. 193 g 9 OPERATING WHEEL Z' O.C. WELDED (TYP) FULLY OPEN WHEN THE TOP IS PIPE ATTACHED. 1~2" PREFORMED JOINT DWMETER FILLER, 12" wIDE 473 Juncos biflorus Shore Rush N m haea odorata Fra rant Water Lily 3' o.c. 442 y p 9 CYLINDER 6 11 GAGE R • CORRUGATD METAL PIPE ~i,i ° n deria cordate Pickerel Weed 18" o.c. OR iABRiCATfD IRON I/8' o _ Tp"_ I STEEL PUff, N " 5000 Po to iACNWELD v , 8 DIP AIL AROUND 19~ NOTES: 48"D PRECAST- REINFORCED 1 a ittaria latifolia Broadleaf Arrowhead 18" o.c. 152 S g 1. THE CYLINDER MUST RE FlRMI.Y FASTENED i0 1HE 70P OF CONCRETE MANHOLE (RISER) I rd'S Tall ,9°`~~~M CA Od "~.C. 1150 Saururus Cemuus L za ~ ,m, THE RISER. 2000 P5F MIN, 48° 2. SUPPORT 84RS ARE ATTACHED er srPAPS erMTED ro TOP ELEVATION SECTION BEARING CAPACITY of RISER, BENEATH COLLAR p i P • • o v ~ $kAl. 6x12 .0 PACER li4R /8 RERAR ~ ~ 0 • 0 0 Q ANCHOR MANHOLE AT LEAST r 18Q98 , (n'p) n n 8 x8 TEE a ~ 12" INTO CONCRETE FOOTING EE ~ : ~ : r a t7 ; ~ .,FiyG v'. v v v' o ' v IN ~ ,~y SECTION A-A V ~ v RISER STRUCTURE p~,,,,, ANTI-SEEP COLLAR ANTI-VORTEX DEVICE tirc ,,.r, I'IJ I I~1! I I-_ 4 IVKJ UAIL MLVt Sheet No. W&R NOTED No. Revision Date Designer Scale NORTH CAROLINA WITHERS R-m"ENEL ,NDED DETENTION WETIAND PON.... ENGINEERS I PLANNERS I SURVEYORS Drawn By Date CORNERSTONE TERRACE JAC 06/17/02 EXTENDED Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 9194693340 fax: 9191616408 www.wmemmvenel.com KLJ 202076.0 RALEIGH, STORM DRAINAGE DESIGnI TABLE GENERAL NOTES -EROSION CONTROL STORM DRAINAGE DESIGN CABLE -NOTES 1 , All constructon shall be In accadance with current City of Raeigh Standard, of Raeigh Standards r;r Specifications, STRUCTURES AREA AREA C O,u:s1, OroT~ RIM EL LENGTH NVERT INVERT SLOPE Ors D~ Y~ 2. The contracts shall verify the location of all existing underground uttities pr -I = 7.22 IN/HR N= 0.01 3. No F,E,M.Aflaod~plain located on the site as per FlRM 3118300120 E, March i STORM RAIN PROTECTION SCHEDULE EROSION CONTROL SYMBOLS Iderground utilities pow to beginning construction. D AGE OUTLET UTILITY INSTALLATIONS AND OTHER PUBLIC -All CONSTRUCTI~J WILL BE IN ACCORDANCE WITH THE CITY OF RALEIGH 4. This site is not located within the Falls Basin a Swift Creek Watershed. '18300120 E, klorch 3, 1992. LEVEL SPREADER RiP RAP STONE FACILITIES, INCLUDING SIDEWALKS AND HANDICAP ;reek Watershed. RAMPS ARE TO BE CONSTRUCTED ON ALL STREETS -11 IS YARD INLET WITH CONCRETE SLAB. TOP=TOP OF SLAB, 5. The contracts sh~l be respons~le fa maintaining all temporary sedimentati~ emporary sedimentation and erosion contrd At Outlet Vdocit , Vla Pipe Entrance Entrance AS SPECIFIED BY CITY CODE. THESE FACILITIES GRAVEL & RIP-RAP FILTER BASIN -p IS YARD INLET WITH GRATE AND FRAME TOP=TOP OF GRATE. devices blown on the approved plan, -CB IS CATCH BASIN. NCDOT STANDARD 840,01. TOP=TOP ~ CURB. 6, All areas disturbed during construction shall be stabiized with tempaary see d with tempaary seeding and mulching within Number (it. sec.) Outlet 1Wdth ~dth Depth Length Depth Type Size, dsp HAVE BEEN APPROVED BY THE CITY OF RALEIGH -MH IS MANHOLE, TOP=TOP OF COVER. 15 working days following completion of grading. Permanent seeding, mulchir anent seeding, mulching and ground cover shall AND SHALL BE SO INSTALLED UNLESS A CHANGE ~ TEMPORARY DIVERSION -FES IS FIARED END SECTION. be applied to the site following completion of construction. on. FES 5 5.4 i8' RCP FES e' 3' 0.5' 17' 9" Class B 4" IS AUTHORIZED BY WRITTEN APPROVAL. PUBLIC Hw 1D 7.6 Headwall t2' 3' 0.6' 35' 12" Class B 5" SANITARY SEWER EASEMENTS ARE TO BE RECORDED -ALL PIPE IS CLASS III RCP UNLESS NOTED OTHERWISE. + DENOTES CMP. 1. Receiving wotercourse: Turkey Creek. ~ DENOTES CLASS IV RCP. CLASS IV IS SPEgFlED IMTH 6" MN COVER TO SUBGRADE IN LIEU OF 24". 8. Denuded area: 13 acres. FES 1008 9.5 24" RCP FES 8' 3' 0.7' 30' 15" Class B 6" ROCK CHECK DAM PRIOR TO FINAL ACCEPTANCE, -ALL CB, q, AND n WILL RECaVE WIRE MESH AND GRAVEL INLET PROTECTION. EROSION CONTROL NARRATIVE SIGNATURE: SiLT FENCE -X- :hin the City of Raleigh s Plonning Jurisdiction. TEMP RARY SEDIMENT BASIN Cornerstone Park is located in norihwestem Wake County within the City of Raleil 0 SCHEDULE The project is specifically located on the north side of US 7D, just east of Eben rD, just east of Ebenezer Church Road. This Notes: Provide flter fdxic unerliner specified os Mirafi 14DN or approved equal. TREE PROTECTION FENCING Drainage Denuded Voume Basin Size Weir Volume phase of the project consists of clearing trees, grubbing, and rough grading of s dev~opmeni of the site, The contracts shall faithfully follow the construction s d rou h radio of site to accommodate future Pipe outlets shall have a reinfaced concrete pipe (RCP) Bared end section (FES) CHIEF ENGINEER 9 9 9 unless otherwise ecified. ~w the construction sequence and ensure that all F r I ~ Basin Area Area Required Width Length Depth Length Provided project sediment is retained on this site with the erosion control measures and ~ mtrd measures and deaces down on these o evil spreader design layout, see detaB. DIR. OF PUBLIC UTILITIES ¦ INLET PROTECTION (ac.) (ac.) (cu. K.) (K.) (it.) (K.) (K.) (cu. it.) plans, Extreme care shall be used around existing drainage ways and tempaary ways and temporary stream crossings shill be to grading. Additionol erosion contrd measures TRAFFIC ENGINEER RIP RAP CHANNEL/DISSIPATOR 10A 4.70 4.70 6,460 35 65 5 10 9,100 used if the permanent storm drainage is not installed prior to grading. Addition may be required by the Engineer ar the City of Raleigh Conservation Engineer if 108 4,50 4.50 8,100 35 60 5 10 8,400 ~ervatian Engineer if warranted, 11A 3.45 3.45 6,210 30 55 5 10 6,600 CONSTRUCTION SEQUENCE SPECIAL NOTES: CONSERVATION ENGINEER LEVEL SPREADER 116 2.55 2.55 4,590 25 50 5 10 5,000 am a gra mg perm) om e I y o a elg nspec Ions ep men . cans ep men . 1. CONTRACTOR SHALL NOT ENCROACH INTO 2. Install gravel entrance, temporary diversions, silt fencing, sediment basins a 12A 2.65 2.65 4,770 25 50 5 10 5,000 on the a roved Ian, pear onl as necessa to install these devices. PP P Y 7 sediment basins w other measures as shown ZONE 1 OF THE NEUSE RIVER BUFFER. ill these devices. PEAK FLOW CALCULATIONS ~ 128 2.70 2.70 4,860 25 50 5 10 5,000 3. Call 890-3435 fa on-site inspection by Conservation Engineer. If approved :ngineer. If approved, begin clewing and 2. STREAM CROSSING, NEUSE RIVER BUFFER ZONE 2 ENCROACHMENTS, AND FILLING OF ~ grubbing. WETLAND AREAS ALLOWED UNDER PERMIT #0001530 ISSUED JANUARY 28, 2001, y Minimum sediment basin volume shall be 1,800 cu. K. per denuded acre. 4. Maintain devices as needed, Rough grade site. 5. Stablize site as seas are brought up io finished grade with vegetation. with vegetation. PRE-DEVELOPMENT CONDITIONS BY THE DIVISION OF WATER QUALITY. Sediment basins shall be tempaary gravel & rip rap filter basins, unless otherwise 6. When construction is complete and all areas are stabilized completely, call fc ed completely, call fw an inspection by 2-YEAR Q = 0.35 x 5,76 z 22.09 =44.5 CFS specified bebw. Conservation Engineer. I \ Seatment basins shall be ciao !~~>~t~-months a when e-half fu . 1. If site is approved, remove tempaary diversions, silt fencing, sediment basil 10-YEAR Q = 0.35 x 7.22 x 22.09 = 55.8 CFS icing, sediment basins, etc., and seed out w r'°;-q.~-„ ~ ave bare areas. ~ \ Desi n inch ^ P I 30' GTY OF RALEIGH POST-DEVELOPMENT CONDI110NS ~ \ 9 r.~~----_- 8. Whsn vegetation has become established, c I for a mal inspection b .Goose I \ e \ (t \ I inspection b .Consenrotion Engineer. SANITARY SEWER EASEMENT 2-YEAR Q = 0.55 x 5,76 z 22,09 =70.0 CFS ~ ~ MB 2000 PG 2239 - = 7.7 i 1 \ \ t 1 \ :..`ir r/ rim -'1 I 1 \ 1w\\ \ ~ 1 1 r prf ( ! 1 t r, r,~~ ~ 10-YEAR Q - 0.55 x 7.22 x 22.09 8 CFS r. . 1 } vt t` ? e~, v v vv vv ' 8L0 OFF - g-'~=~' 1 , 11 r 11 1 tt >t \ v ee vv AS Y ; 1 i 1 11 i i ~v~ ...1 , ~ ~ > - 6 W--9FF ~ I r \ ~ v e \ ~ \ 1 C ~ ~ / , ~ V I L ! ~ r 1 ~~...r`` t !t ~ 1 % f 1 ! 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V i I 1 t S t v ~ v o i t I !_d..~ . 1 \ f v v v. r! r 1 . t 1 MB 2000 PG 2239 ~ a zs so loo zoo 'S ,:v ` y ~ v v ` ~ ~ / r 1 ,1 1 ..,.1.x. 1 1 I 1..: ~ ! 1 l t i o ~ ~ ~ \ \ ~ \ \ T\ \ ~ 1 t ~ ~1 1 t , + ;i 1 1 1 I 1 RE~A It16 ~ Led \ ~ ~ ~ / V A ~ V \ ~ A, ? . ~ r f 1 ! ! ! 1 1 ! 1 t ~ I ~-.e-1 t ~ \ 1 t ~ f l DE N ~ ~ $e 1 ~ t . GIN`~,• ~ vv ~ vv ~ ~ ~ / 1 t ~e w "Ea A v Y `,~,v av'~. ~ v v fv~ '^G 1 1 1 1 1 1 f 1~ d h~"' t lm.t 1 1 ~ v~ l 1 W w tiV 1~ ~ ?a , 4. v. ? r'. \`.)v ~ , /X?_ ~ ? ~ ~ ~ o ~-~'~i ! . A . h ..1._._.L. ~ 1 ~ , I -4_-.a~ ~ t 1. 1~ ~ ti ~ 1 A. 1 i H iLi L'L'FT 1 Iff1~~~~1 . ~t 'o U I inch = 5 ft. N Designer Scale CAD File evisions a FR WITHERS & RAVENEL Engineering & Surveying, Inc. De scr tlon Date AK CORNERSTONE PARK LEWL SPREADER SIGN FOR N 111 MacKenan Drive Cary, N.C. 27511 AS PER COR REVIEW QMMTS STORM WATER, SEDIMENTATION AND WIRES 1' = 50' SHEET3.Dj Drawn By Date Sheet No, 5 30 01 LOTS 109 119 129 13 & 14 o mwr ° 919-469-3340 FAX 919-467-6008 ] EROSION CONTROL PLAN KLJ 03/21/01 Checked By Job No, of IORTH CAROLINA 200147.0 RALEIGH WAKE COUNTY NORTH CAR01 0 Y TEbIPORARY SEDIMENT BASIN SCHEDULE Drainage Denuded Vdume Bosn Size Wei Ydume STORM DRAINAGE OUTLET PROTEC110N SCHEDULE EROSION CONTROL SYMBOLS Basin Area Area Requited W4dth Length Depth Length Provided LEVEL SPREADER RIP RAP STONE ' At Outlet Veloaf , Wo Ppe Entrance Ezit 0 1.80 1.80 3,240 20 45 5 10 3,600 ~IS~N~ ~IS~N~I~yI' Number (it. sec,) Outlet ~dth YVidth Depth Length Dsp Depth Type GRAVEL & RIP-RAP FlLTER BASIN 8A 3.50 3.45 8,210 30 55 5 10 6,600 FES 1 6.18 18" RCP FES 8' 3' 0.5' 25' 4 s class B TEMPORARY DIVERSION 86 1.30 1.05 1,890 15 35 5 10 2,100 8C 3.25 2.10 3,780 20 50 5 10 4,000 FES 19 6.15 3D' RCP FES 12' 3' 0.6' 65' 6" 15" Bass B ROCK CHECK DAM -SF- SILT FENCE Notes: Provide flter fabric unerlher specified as Mirofi 140N a approved equal. Minimum sediment basin volume shill be 1,800 a. ft. per denuded sae. Pipe outlets shad have a refaced concrete i e RCP flared end section FES Sediment basins shill be tempaay grovel & rp rap Titer bosns, unless otherwise unl pP ~ ) ( ) -TF- TREE PROTEC110N FENGNG ess otherwise speclfed. \ ~ i as M' % it ! specified dow. Fa level spreader design layout, see detal. ¦ INLET PROTECTION \ • b / _ ; Sediment basins shill be cleaned out e 8 months a when one-hdf A. ~m ~ ~Y s, ~ ~ ~ ~ STREET CURVE TABLE STREET LINE TAB ~ Design vidudes 1 R. of freeboad. EET LINE TABLE \ \ - SPECIAL NOTES. g \ >-~,.z ~ - l fr ~m~f`~- ;,..--~~'d ~ CURVE LENGTH RADIUS CHORD CHORD BEARING LINE LENGTH k. .._~r.., p LENGTH BEARING LEVEL SPREADER ~ \ \ \ h 36.32 575;33'49"E ~ ~ \ \ ~ ~ ~ ~ ~ ~ ~ ~ ~ Ci 449.13 vsw -~'"r 400.00 425.91 S43'23'48"E Lt 38.32 m"-~ ~;i~~h ,m°` - ~ .ro cvw C2 44,97 1 L2 96.00 _ ~ . 1" CONTR,4CT \ „ OR SHALL NOT ENCROACH INTO \ \ 96.00 5111348E ~ \ ~ \ \ ~ _ ~.A v a ~ ~ 44.30 $2824'22"E ~ a a C3 54.82 75.00 53.61 L3 48.82 ` o o. 3 3 N F $66'3117 E ZONE 1 OF THE NEUSE RIVER BUFFER. ~ \ ~ < 48.62 S45'34'S6"E \ \ 4.~ ~ 4 n ~ - a~ ~ , m ~ m AK IN C4 8.58 75.00 8.58 L 36.21 ~ VESTMENTS LL ETAL $0353'08"w 36.21 ~ " `t S89'0121 E 2. STREAM CROSSING NEUSE RIV ~ ER BUFFER ZONE 2 ENCROACHMENTS AND FILLING OF \ ~ ~ - ~ ! L5 189.88 . - ~ ~ m ` DB 8651 PG 1525 Ls 1101.74 \ \ Q 189.68 so~ros'47"w WETLAND AREAS ALLOWED UNDE ~ ~ZW~ \ \ PIN #0777.02-96-6340 a 30.00 1101.74 R PERMIT 0001530 ISSUED JAN ARY 28, 2001, o ~ \ \ o ~ S00'36'29"w , cn Q ~ ~ BY THE DIVISION OF WATER QUALITY, : W 30.00 S89'23'31 "E ,a ! r; ~ _ ~ t _ . ~ /1 ! V ZONED R-4 - C~ (Y g- ~ r r.~.M-~ i - ~ _a.._. r . ~ w... ~r e` v ~ w 9 W N + f 77 tp e'r J ~ ~ ~ ~ F. . .m. . - ^ , rte' i O del s' r,~ 'v ~ ~ Q W S00 36 ~ ~ ,~r~ ~ ~ r~ ~ ~ ~y~.~ 29 W 7 4 54.88 m ' ~ ,Y ~ . A ? ~ r i , 1. r ~ ~,.,r 10' TYPE Y f d f` ~ / s ..-.w Y SE .r it r / 1 ~ 1 ~ J ~ t ~l ~ ` ~ ~ .-L ` ~ N~ " ~ ~ < ,ear , ~ ~ j ~ ~ ~ f ~ ~ r 0 36 2 1 . 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V. .f` ~J I d 1 ~ ~ ! p t Jf mow, ~ ~ s ~ ~ J J d r l J ! t f ~ €I r\ ~y ! y 1 1 r~ ~ ~ ~ 6r ! 1 4 ~ t ri ! ~r~ ~ ~ A rvo+~.a ~.:J h 1 1 t,~dl„, q ~ ~ ~ r A~"l CLl _ ~~F~,1 1 f ~ 1 ?rI / Ji ~ t ! 1 d d d i !J t I ~ fj ! ~ ^lfr.. - av ,V ',yh~4 ~J_.,,, P 7 .....s~ ~ E ~ ~ / / J r J E~ ~ ? / A / t / ! ~ ~ ` i is ~r ~ F / o W ,cP I ! 4 ~ r J ~ , ~ ~ SPRE ER , ~ W ti. .,,i ^ `v,~,,,yr•+°'. ''s..,. mow'` t\ o r r~.• \ ~ ~ I . _w_ y r f ~ i Y~ 7 i # ? / ? 1 !fir ! i d , i / tt ! ~ . g ~ w ~ w _ kr f f II ~ ! ~j ! ltfll{ 'i d t ? / ? y.r 8 r j d p ! _ ~ f ifi . m..z- I' ~ ' J- ~ ~V i d? d ' d ! r / r 1 1 p ~ ! ~ f / i 1 ~ r' r..~ - ! d ! ! ~ r k. _ ' f I + r _ 1, y ; , ~ ! r ~i p i d 1 : „"°._4 t a` v ~ ! t t r t; t ? r i ! e,,,~..., r . ejlf , 31 r, ~ d ~ . - ~ ~ ~ g s...., _ i ~ _..w, °.d 1`f'"f ,1, l y J ! / ~ ! / j ! ~ J d? rdr d ~ r ~ , q r - J 1 4 / F a F~ V _ I d f I / ~ / 1 / ! J JJ 1 / / r.~ ~ r ~ s t r'f ~ m~_ , L _ ~w~ PEAK FLOW CALCULAl10NS s ~o J , F t' - A 1 / J ! J I ! J ! r ! q~l,. VA 1- ~s( .r r° r/ r w. _ l ~J i S / j 1 r ~ ~V?b s s' / a ~ ! ~ / / ~ ! / / J 1 I ~ ! ~ ~ jt 1ti it ...f` rff~, E,. ~ - -.~_..e,».._'° .v>._. _ - I ( , / ~ C1 I / 1 d r r~ \ ~ J* r`ts ~P , y/~ ,.-r~r..K .a,. . . . l` 1 ,r l : ~ ~ ,i 1 _I "f / / i 7 j i . ~ t r _ ~ rr j ....y. ~ , , PRE DEVELOPMENT CONDITIONS Y °`l ~ ~ \ \ R °°°""fls~-...;~~°,,, ~~y ~ ~ . 2-YEAR - .5 x ti 0 1 / ! ! ! 1 1 , ~ t -~~-~~~-~~~--.~r~" ~ ti, ~ Q - 0 5.76 x 12.29 = 35.4 CFS i f ' K ! > / ! ! l 7 l j I i z~+, r ..,~..«+a>^` r.v mfr ,d"`,„ d~ ~ _ ~ .._m„,.. I11,~ = d ~ r ~ __._a._~._ w"'"~--~ "~~w ~ 10-YEAR Q = 0.5 x 1.22 x 12.29 = 44.4 CFS y _ ~ ~a ~ ` , I / 4" T. -.~_~.,r.N_;_„ y~, •.1`~., POST DEVELOPMENT CONDI110NS , ~5 lr I t ~4.v ~J ~ 1~1 ~~/"111\1\~ w«~ T / ~ ~ , - t t - - > try f t l~ / . _ e' ~ ~ e...., ~ ~ , , I / i ~ ~ 2-YEAR Q = 0.58 x 5.76 x 12.29 = 41.1 CFS o ~s ~ ! t , ~ ~TR'A f ~ ~ ~ , p r b.r ~ _ t~ pp w, 10-YEAR Q = 0.58 x 7,22 x 12.29 = 51,5 CFS ' z ~ , ! J ~ t I / ~ , ~ ~ f , r ! ~ t `,d' -OIC~.,..t'~- I~-'044•--~.., ~ r l,,J, ` ~ ~ . ~,k z ~ ' ! i- / t l / , ~ • 1 ,=+„4~„~ r .r ,>~'i r r'°" ,,,r _ s..._.,..-.~... ° d ~ ~ T - m.. ~__..~._w-K ~ , , r,.C rte, 3 V-r'Q 0.m Ai ii ! I! t del V ~ \ ! 1; ,~y.+~ E , ~ °~,a~ rr _..„..,..~..r , r ~ , I Vic' f ~ J ~ ~ tp°___ f, 1 ' ~t t s' ' `t ~ 111 J ~ f /i. : W OQ 7' ~ ~ 7 ! d di/' / 'r'r"-~""'..r.......-M^"""' Rt i t / / y , STORM DRAINAGE DESIGN TABLE ~ Y / I'•. l id r} `J r. o-.^'.'".` - ° 4'; tr 6'i~.'L~V/ I !l~ J ~d l . # I' ~ ~ SI GLE ~ ,y 0 18q y r, rr ~ - r` , ~ SiRUC1URE~ STRUCTURES AREA AREA C Q,wEn QTOTU RIM EL LENGTH INVERT INVERT SLOPE DAN DpE~pr V~ - _ f 1 f ~!E W O \ ` ~ / / O 1 ij rJ t ! r L~' V o~r~ f' ! ~ _ ~ ~R) f \ rt rt, aryl j° Y ~ ~ ; ~ - - ~ , GENERAL NOTES -EROSION CONTROL ~ l ~ ~ r ,R ~ r , z ~ I„ ~ f Q~f ° L ~ F ~ z = t r 3' w ~ ~ ~ ~ , g~ ~ I construction shill be n accordance with current Ciiy of Raleigh Standards ~ Specifications. ~ ~ ! w ~ f' s ~ 2. The contracts shill verify the location of all ezistin under round utilities rior to be snots construction. ~i ' e' ~l a r' r' .e~ ~ ~ Zl W d 3. No F.E.M.Afl on located on the site os er FlRI~ 3718300120 M r h i 9 9 " ~ " ~ r r w 1 ~ ~Q ~ p E, a c 3, 992. s~ r , 1 , f J > ~ ~ • _ ~ ~ 4. This site is not located withn the Fps Basin a Swift Creek Watershed. , i f , ! r c~ l ~ ~ i I , ' S. The contracts shill be responsible fa mantann dl tem oar sedimentation and erosion control ~l r7 ' 1! 9 P Y ~ f t ~ ~ devices )sown on the opproved plan. ` ~ ` r` f 1 q~1~j{}~Sl ..I±r~i,1,1 /ids rn ~ ~ 6. l ;p r f l d- NI areas disturbed dodo constructor shill be stab1ized with tem oar seed'm and m I h' a ~ f ~ ~ ~ 9 15 works da fill w' 9 P Y 9 u c mg within _ ~ r ~ r t"~ r` ,f` ~ g ys o m9 completion of grading. Permanent seeding, mulching and ground cover shill ~ ? ~ ' ~ ~ x i ; ~ r' .~z~ ~ be applied to the site fdlowng canpletion of construction. 1 (r ~ k~~~,e4-~ ~ i I d t'°~ 'T '.r 3 E ~ ~ ~ ~ r' ? r ' ~ a 7. Receiving watercourse: Turks Creek. ~ ~ ! , ~ Y CONSTRUCTION SEQUENCE 8, Denuded sea: 9.85 owes" S._ }~L ~ a - it ~ s ~ ~ ~ ~ ~ J r t sin a gra mg perms om e i y o eig nspec Ions spa men . 2. Install ravel entrance, tem orar diversions, silt fencin s~diment basins NOTES: i ~ o " a~.~ . NOTES: EROSION CONTROL NARRATIVE 9 P Y 9. s other measures as shown ~ Ir ~1 ~ ~ "t v~ ~ J - fJ ~ t ' ; t ~ w i ` , , on the approved Ian. Clear onl as necessar io instaN these devices. -I - ~ -I = 'r'.22 1N/H}i N= 0.013 ; ~ 1¦1 ~Q".+' Cornerstone Park is located n nathwestem Wdce Count within the Cit of Ralei h s Planni Jurisdiction, 3. Call 890-3435 fa on-site in ection b Y ~ p a ~ ? v i~ ~ ~ ` ~ ~ _r' ~ Y Y 9 rig Conservation En 'seer. If a ro -ALL CONSTRU; o , a ~ Q~ ~ ~ r The project is specificaN located on the oath side of US 10 st east of Ebenezer Church R Y 9i PP begu: clearing and ALL CONSTRU;TION WILL BE IN ACCO4DAN(1: WITH THE GTY OF RALEIGH ry , , i° ~ 1 ' ~ q` P' i'0p hose of the ro' t card ~ ~ Dail This grubbing, -YI fS YARD IN~I o ` f ~ op. p p fec sts of dean U bbn and rou h rods of site to accommodate future o i i r ± ~ t { 1 j ~ Bevel ent f 9 ~ 9N 9~ 9 9 9 4. kiaintain devices as needed, Rough grade site, ~ -GI IS YARD Ih'l -YI IS YARD INLET WITH CONCRETE SLAB. TOP=TOP OF SLAB. t<<t L. J 'o -Gl IS YARD IIvLE1 WI1H GRAZE AND FRAME. TOP=TOP OF GRATE ~ eete46~ ~ ry ~ ; W ~ ~ , ~ r opm o the site. The controcta shall foithfully idlow the construction sequence and ensure that oil 5. Stabilize site as areas se brow ht u to finished rode w ~ ~ ° / 9 P 9 11h vegetation" -CB IS CATCH ~ ' { f r a ~ I ; ~ ' , project sed'anent is retained on this site with The erosion contrd meosures and devices drown on these -CB IS CATCH .BASIN. NCDOi STANDARD 840.01. TOP=TOP OF CURB, r t' ' i I • ' ans. z 6. When construction is complete and dl areas are stabilized;completely, call fa an Ihspection by -MH IS MANHa ~ ° r' r r ; ~ ~ ~ „ , pl E treme cae shill be used sound ezntn dross wa and tem oar stream aosdn s shill be o « ~h O~ L~ 9 9e Y9 P Y 9 Consenroiian Engineer. ~ t -MH IS MANHO~. TOP=TOP OF COVER. GRAPHIC SCALE j ! e M 7 f used ii the ermanent storm Bran -FES IS FLARE - ; a , ' P age is not nstdled prig io grading. Additional erosion control measures 7. If site is approved, remove temporary diversions, silt fencllg, sediment basins, et', and seed out a ~ , ma be r red b the En n ~ -ALL PIPE IS ~ ! ' ~ t i / Y ~ Y 9 ~ a the City of Raleigh Conservation Engineer if worronied, pave bare areas. ~ -FES IS FLARES END SECTION. -ALL PIPE IS (!'LASS 81 RCP UNLESS NOTED OTHERWISE. + DENOTES CMP. e0 0 2s so 100 d ± `t i ~ r f 8. When ve station has become e ~ 4 DENOTES CL~ 4 DENOTES CLASS IV RCP. CLASS IV':'S SPEpFlED WITH 6" MIN COVER TO SUBGRADE IN LIEU OF 24". 3 a « s « l ~ ~ / r ~y g stabhshed, call for a final m~speciion by Conservatiorw Engineer. f f' k I - ~ ~ t . ? / F I w ( [N FEET ) w 1 inch = 50 ft. 00 8 WITHERS & RAVfNEL Engineering & Surveying, Inc. o.evisions Date Designer Scale CAD File S 111 MacKenan Drive • Cary, N.C. 27511 CORNERSTONE PARK, LOT 8 STORM DRAINAGE, SEDIMENTATION AND EROSION W & R 1" = 50' SHEET3.DWG 0 ~ ERS 919-469-3340 FAX 919-467-6008 RALEIGH WAKE COUNTY NORTH CAR Drawn By Date Sheet No. W & R 03130101 JORTH CAROLINA CONTROL PLAN Checked By Job No. KLJ 200147.0 of 10 i ~ w O ~ 'ate. I / p D / Q ~ / z n Q ~ ~ ~ ~ 4. I ~ s ~ ~~n ~ ~ ~ • LOT 3 ~ Q ~ Q~ ~ ~O~dO "~~0' ~ a / ~ ~ ~ uO~Q m 4 , pz0 i ' ` ~N ~ ~m m ~~wr ~ ~ ~ Ri O ~ O O ~ p ~0 - zr~p (X: ~ Qm' z0 ..,dry ~ I ~ ~ ~ ' U t ~ ~ ~i ~'i~ ~ ~ . ~ H W ~ I r~ _ Q ~ Qi; c,-.. m L~ ~ p z~g ~ ~ ~i li~~l~ ~ !iii ~ ' 1 ~ C7~ ~ ~ 6 ~n,! m 0 z W~ WW ~ " fl'+ " O WESTFIELD HOMES OF z ~ I i i, rii~~~~i i i~~ r ~ ~ ~ d ~ ~ ~ a N I CAROLINAS LLG z ~ , z ~ .PIN:. Olll-18-004q ~ ~ ~ ~ z w ~ Q ~ , ~ ~ ~ ~/„~U~t~~l~~i~i iii. p.. ~ i ~ ~ ~1 V1 I -N to ~ ~a; i ZONING: GUD-TD ~ Q ~ u ~'s ~ ~ - ~ i / l~~l~ lei ~i ~ 1 i ~ 1 W H i i a USE: VACANT ~ _ ~ - BM. Ogg50 044 i - i~~ ~ , V ~ , ~ ~ . i' ''~i~'~~~i~'~~i~,'~i v iii ~ ~ ~ C.7 ~ _ - ~ ~ ~ ~ ~~~r ~ -LOT--~-- . - M ' HIGHWAI i ~ Z'lf~© 1 ~00 HIGHWAY 9~ T'~'~LC, ~ 7 ~ , ~ ~ ' ~ , ~ ~ - - - ~ ~ ,._v.,, . ~ ~ ~ ~ _ _ _ , PINT O~Yt7>1s=8~~1 ~ ~ i~ i~ ~"r ~ i ~ i i i ~ . , ~ ~ ~ , P, ~ ~R Qr G+a O ,,.;%r,rl~~d,~; ii . ~ ~ i ~ ~ TOWNHOME'A 50G~iNG~. A F ~ ?t~ ~ . ~ ~ ~ x , , _ - ~ zo r i , ti - ~ , - , ~GOM ...-G ,NJ a ZONING: GUIa-TQ~ , ~,e. ~ ~1~. ~ ~ ~ ~ PIN;'07T1-& ~0540~ ~'I ~ USE. VAGANT ~ ~ - ~ ~ I ~ ~ ~ ~ ~ ~ ~ ,-r _ ; m~ rm m~ ~ , _.ti = 6a-- ~~t~ - ,,,ter - raj ~ - F! , ~ ~ , ` ~ ~ ZON NG. ~UVcTU BMrbB 8l/0 6 ~ ,l~~~i o ) , ~ ~ ~ ~ :I W U ~ CD ~ 9~ - ~ ` ~ ~ ` ~ USE: INQUSTRI O C~ ~ ,~,rY;~,~, , li ~ ~ ~ww W GCi ~ - ~ ~ ice- x 1, ~ ` ~.r Fl _ ~ B=8 r . ~ m _ i, - - - - qi... _ _ ~ - _ i ~tirl,~ ~i 1 ~ i y, ~ , ~ BM:09505/23~1~\ ~ 'Q; Ga 1 _ _ { oobb 'YYyy _ ~ O~ ~ ~ ~ _ _ _ ~i D tJEI15E 87F'.EAM BUS ~ i , ~ ~ I ~ ~ i~ ~I , ~ bg ~ti ~ ~ ~ ~ ~ ~ / ~ / ~ ~ _ I _ z w ~~i/(M~F~'~DFROM TOP~~''~ ~ i ~ l' ~ ~ ~ ~V ~ ~ W R'i Gy ~ w~ / ^I ~ 1 iii:6~°~NK EACH 51DE) ~ ~ t~. ~ I I I l-, 1~. ; 1 ~ I~~li~~~,~ I ~ <,V~lllf ~ ~ A , . _ / - =_'i ~ - Y : i ~ , . ~ _ ~ ; ~ EXISTING GURB AND i _ - _ , ~ ~ J ~ ~ ;~,rr~, ~ ' ~ E~Cis.TIN6.~ GONGRETE v _ ~ s i l I 1 ti-. i p4 ~ i i ~ ~ ~ 51bE~.K I i ' - ~ , -y,r. I r.~_ _ ~ 7 I I ~ ~ l~ ~ 1 ~ I: s , , D I~: ~ ~ ~ I ~ d ~ ~ ~ EX. WETUANDS ~ ~ ' 4 ~ ~ - ~ ~ ~ ' ~ - ~ ~ r s\ i ~ ~ _ = ~ ~ t__ - _ - i t~ i ~ ~ r ~r~~ ~ _ ii ~ - i i~ ~ i - ~ ~ ~ ~ W~~ti ~ ~ ~ ~ JIM W. BRADKE TRUSTEE ~ i , ~ ` _ PIN: Olll-61-5541 ZONING: GUD-TD ~ a ~ r, ~ ~ ~ _ ~ ~ ~R ~ ~ _ - - a ,-.i- ti ti - ~ ~ 4 ~ r ti- USE: LAND GLASS ~ _ ~ ~ _ - - _ ~ _ 1 ~V 1~ 1;~ i~:` ~ -mil/~ ~ GO ERGIAL ~ BM: 03465 Og42 ~ ~ ~ - i I ' ~ C~~ ~I~ ~ ~i ~ ~ ~ i~ i i i, ~ ~ ~ EXISTING 5' CONCRETE ~ ~ , SIDEWALK ~ i i ~ 1 ~ ~ , ~ ~ i~ ~ i ~ ~ ~ ~ ~ ~ ; ~ , I ~ ! ~;i , i, iii Q RALEIGH NG ASSOC. ~ Q PIN; OT?"f-11-1212 ~ i i ~ ~ r, ' ~ A ~`i. ~ l', ~ i ~ ~ ' ~ , ' ~ , Z ZONING: GUD-TD ' ~ ~ ~ 0 iii ~ ~ ~ ~ ~ ~ l~ o ~l a USE. LAND GLA55 COMMERCIAL i, ~ ~ ~ ~ ~ BM: Obg32/Og33 + ~ > > ~ ~ ~ ii;r ~ ~ ~ ~ ,,r' ;i i, ~ W T 2 ~ ~ ~ ~ ~ ~ ~ ` ~ ' LOT v~ ~ ~ ~ I ~ ~ ~ ' 18,40 AC ~ ~ ~ ~i~ ~ a ~ ~ ~ x ' ~ (Y. li U.1 w 0 ' ~ ~ ~ ~ ~ by ~ ~ N ~ ~ W ~ 0 w ~ z ~ilii~i~~ ~ `III l'~ii~l~i~~, I,;, I I i~`.il,, \ r,l,j l 1 I1~1 ilk w ~u ~ ~ ~ ~ j iii p ~ x ~ i 1 ~ I~ ~ i,;l r~' E"~ CARMAX ~ a d ~ ~ I1 ~ ~ I~_I I I~i~~r' ~ l L>:l ! U~z i/~ i i ~ i ~ ~ I I 1~~ ~ r1 I. ' 1 i I ~ ~NIF , ~ 1 ~ l I i ' J~ r-~ ~ r~V ~I~ ~ I i' ~I~ del 1 i 111 ~ I 1 ~ /III - :,i i I~ ~i ~ ~ l i 'll ~ f - _i ~ ~ ~ ~ ~I ~ ( ~ , t ~ ~ ~ ti 1~ ~ ~ ~ ,EXIS~TI~ GU(~B At~ , i , ; r ~ , i ~ r 'i ~ I~I i ~ ~ ~I i illy ,~~i~l i ~7 ~ ~ ~ i ~ ~ ~ ~ r I r EXISTING 5' GONGRETE `•~t~ , r ii i ~ i i ~ i'~ i O i~II -iiri n~ ~ i , i~I~VII~ V~~. i ~l ~/I ',ii,~ iii , ~ ~ I I I yid~'~~I ~ ~ ~ I ~~1~ li~~ , A~ ~ ~ I ~~'/~1/~~ll~/r~/ r ~ 'V'~:~ / ~~~i i l ~ i~ i I ~ ~ i 'i ~,i r ~ ~ ~ ~ / ~ ~ i d Yla ~ ~ , ~ ~A' ~ ~ ~ ' ~ 1 ~VA~ . ~ ~ h, ~ 1 f' ~ LOT 1 ~ / l V~~~A~ ~ _ ~ ~ 8.5 A ~ P ~ 4~ 0 C ~ r ~ (J~ / ~ l 'l ~ ~'~1~\ ~~t~ ~ v~ 0 ~~p~~ ~,~Nryll~~~p', lIl'i~~ ~ ~ ~ a I -,r ~ ~ ~ ~~,0 ~ ~ `t~~r~i! v1>> ~1 ~ ~ ~ to ~ r ~ ~ t" VP ~ I ~ Ili ~ A \ + A / (J J P~ , 0 ~ Q 4 ~o¢'~ ~ ~J ~ ~ ~ ~ :~r' 1 ~ ~ ~ ' b o~ e° Z 0 0 t, / ~ ~ ~ li' ~ I~11 / ill ~ \ \ \ \ ~.1~ e~ 1 ~ U HIGHWAY SEVENTY L G ~ / PIN: Olll-lb-gl63 0 ZONING: GUD-7D ~ ~ / / - USE: VAG T U ~ - ; ~ ~ i 1 0 BM: 0868 0086 z rti . V x _ ~ ~ P ~ ~ ~I ~I;~ ~ w - u., i r'' d I ~ ~ ~ ~ $ ' ~ , ~ / ~ i~l~ i; `k i ~ . ~ ~ / ~ JI I,~~ ~I~I, III v ~ Atliv ~ ~ , / ~ 1 ~ 9 X11 ~ ~ 1 l ~ ~P / ~ 1 l dt ~ ~ j - ~ ~ l i' ~ l ~ ~ ~ ~ it ~ ~ 1~~~~ ~ l~l t / i 1 \ j ~ ~ 1~ 'L i. i. ~;~4 " ~ ~ , / ~ ~i , , F '\~-t.~ 'V~ ~ A~ ,e ~ ~ ~c~C - ~..w~ k~ A~ ~ V A h. w ~(Qn. ' 1 ~ ~M:t~~~:~ i / ~r ;~C~. ~ PROJECT NO. JD'H-03030 ~ FILENAME: JDH03030-X7 DESIGNED BY: JPE DRAWN BY: PDQ A~ ~ a i`' ~ GRAPHIC SCALE SCALE: 1 100' ~~c , ~ 100 0 50 100 200 DATE: 10-27-03 SHEET NO. 1 inch = 100 ft, C-1 MCADAMS FINAL DRAWING - NOT RELEASED FOR CONSTRUCTION