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HomeMy WebLinkAbout20041626 Ver 1_Complete File_20040107O?O? W AT ?RpG r Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources January 4, 2005 Mr. John Powell c/o Withers & Ravenel Attn: Mr. Brad Hart 111 MacKenan Drive Cary, NC 27511 Subject Property: Powell Tract at 1010 Road Alan W. Klimek, P.E. Director Division of Water Quality DWQ Project # 04-1626 Wake County Approval of 401 Water Quality Certification and Authorization Certificate per the Neuse River Buffer Protection Rules (15A NCAC 2B .0233) with Additional Conditions Dear Mr. Powell: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact no more than 75 linear feet of stream; 0.26 acres of Neuse buffers; and 0.304 acres of wetlands for the proposed commercial development at the subject property, as described within your application dated September 28, 2004 and additional information received by the N.C. Division of Water Quality (DWQ) on December 17, 2004. After reviewing your application, we have decided that the impacts are covered by General Water Quality Certification Number(s) 3402 (GC3402). The Certification(s) allows you to use Nationwide Permit(s) 39 when issued by the US Army Corps of Engineers (USACE). This letter shall also act as your approved Authorization Certificate for impacts to the protected riparian buffers per 15A NCAC 2B .0233. In addition, you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, Non-discharge, and water supply watershed regulations. Also, this approval to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 or CAMA Permit. This approval is for the purpose and design that you described in your application. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A NCAC 211.0506 (h). This approval requires you to follow the conditions listed in the attached certification and any additional conditions listed below. The Additional Conditions of the Certification are: 1. Impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No other impacts are approved including incidental impacts: 401 Wetlands Certification Unit 1650 Mail Service Center, Raleigh, North Carolina 27699.1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733.1786 /FAX 919.733.6893 /Internet: http://h2o.enr.state.nc.us/ncwetlands No One Carolina Naturally An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper Mr. John Powell Page 2 of 4 January 4, 2005 Amount Approved (Units) Plan Location or Reference Stream 75 (feet) PCN form Neuse Buffer 0.26 (acres) PCN form Wetlands 0.304 (acres) PCN form 2. Erosion & Sediment Control Practices Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased borrow pits associated with the project. c. For borrow pit sites, the erosion and sediment control measures must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Surface Mining Manual. d. The reclamation measures and implementation must comply with the reclamation in accordance with the requirements of the Sedimentation Pollution Control Act. 3. No Waste, Spoil, Solids, or Fill of Any Kind No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the Pre-Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur. 4. No Sediment & Erosion Control Measures w/n Wetlands or Waters Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the Division of Land Resources has released the project. 5. Protective Fencing The outside buffer, wetland or water boundary and along the construction corridor within these boundaries approved under this authorization shall be clearly marked with orange warning fencing (or similar high visibility material) for the areas that have been approved to infringe within the buffer, wetland or water prior to any land disturbing activities to ensure compliance with 15A NCAC 2B .0233 and GC 3402. Mr. John Powell Page 3 of 4 January 4, 2005 6. Written Stormwater Management Plan (No Further Approval Needed) All Stormwater shall be directed as diffuse flow at non-erosive velocities through the protected stream buffers and will not re-concentrate before discharging into the stream as identified within 15A NCAC 2B .0233(5). The final, written stormwater management plans (including a signed and notarized Operation and Maintenance Agreement) dated December 15, 2004, must be implemented and the stormwater management facilities shall be constructed and operational before any permanent building is occupied at the subject site. The structural stormwater practices as approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural stormwater practices shall be made without written authorization from the Division of Water Quality. 7. 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 the attached certificate of completion to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. Violations of any condition herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon expiration of the 404 or CAMA Permit. If you do not accept any of the conditions of this Certification (associated with the approved wetland or stream impacts), you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. Any disputes over determinations regarding this Authorization Certificate (associated with the approved buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is subject to review as provided in Articles 3 and 4 of G.S. 150B. J ? c? ?i??1.Lt C? /vn?C?.-tiUYt, cv) ?iLt,?? ?L j r , I ? ? G??-r?-ti?' Mr. John Powell Page 4 of 4 January 4, 2005 This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act and the Neuse riparian buffer protection rule as described within 15A NCAC 213 .0233. If you have any questions, please telephone Cyndi Karoly at 919-733-9646 or Bob Zarzecki at 919-733-9726. Sincerely, Alan W. Klimek, P.E. AWK/cvdw Enclosures: GC 3402 Certificate of Completion cc: Sean Peffer, Robert Goldstein & Assoc., Inc., 8480 Garvey Dr., Raleigh, NC 27604 USACE Raleigh Regulatory Field Office DWQ Raleigh Regional Office DLR Raleigh Regional Office File Copy Central Files Filename: 041626PowellTract@ 1010(Wake)401+Buffer Project Name: Powell Tract @ 1010 Project No. DNV Q 04-1626 Pond 1 SUBMITTED DESIGN: REQUIRED DESIGN: elevations 2.7 average depth status Bottom of Basin (ft) 396 Permanent Pool (ft) 400 4 ft. depth ok Temporary Pool (ft) 404.5 4.5 ft. depth ok areas Permanent Pool SA (sq ft) 16412 13488 sq. ft. ok Drainage Area (ac) 21.81 13488 based of avs depth ok Impervious Area (ac) 8.66 39.7 % - volumes Permanent Pool (cu ft) 44866 Temporary Pool (cu ft) 35981 32251 cu. ft. ok Forebay (cu ft) 10411 23.2 % check forcbc other parameters SA/DA 1.42 1.42 - Orifice Diameter (in) 2 0.16 cfs drawdown - Design Rainfall (in) 1 2.6 day drawdown ok Linear Interpolation of Correct SAIDA*** 4 ft. Permanent Pool Depth 17o Im ervious SA/DA iron (Avg. Depth) Next Lowest 30 1.08 1.08 1.08 Project Impervious 39.7 1.42 1.42 1.42 Next Highest 40 1.43 1.43 1.43 3 ft 4 Project Name: Powc1l Tract @ 1010 Project No. DWQ 04-1626 Pond 2 SUBA117TED DESIGN: REQUIRED DESIGN: elevations 1.5 average depth status Bottom of Basin (ft) 386 Permanent Pool (ft) 390 4 ft. depth ok Temporary Pool (ft) 395 5 ft. depth ok areas Permanent Pool SA (sq ft) 6589.5 6397 sq. ft. ok Drainage Area (ac) 9.85 8140 based on avg depth check surfac Impervious Area (ac) 4.14 42.0% - volutes Permanent Pool (cu ft) 11892 Temporary Pool (cu ft) 14462 15313 cu. ft. check tempo Forebay (cu ft) 3180 26.7 % check forebc other parameters SA/DA 1.5 1.49 - Orifice Diameter (in) 1 0.04 cfs drawdown - Design Rainfall (in) 1 4.0 day drawdown ok Linear Interpolation of Correct SAIDA*** 4 ft. Permanent Pool Depth C7( Impervious SA/DA fron (Avg. Depth) Next Lowest 40 1.43 1.848358753 1.05 Project Impervious 42.0 1.49 1.90 1.15 Next Highest 50 1.73 2.088593216 1.43 3 ft 4 WITHERS RAVEN EL DEC 7 2004 FYETU,N S AND TTDLATER BN t1f STORMWATER MANAGEMENT PLAN 1) a # o-'V, 62& POWELL TRACT AT TEN-TEN RD. Cary, North Carolina Prepared For: WINDJAM DEVELOPMENT GROUP 1130 Situs Ct., Suite 250 Raleigh, NC 276o6 Prepared By: WITHERS & RAVENEL, INC iii MacKenan Drive Cary, North Carolina 27511 Revised December 2004 W&R Project No. 204028 ® POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA INTRODUCTION ® The purpose of this study is to document pre- and post-development peak stormwater discharges for the 1-year, 5-year, and io-year design storm events. The goal is to provide detention structures adequate to maintain a discharge less than or equal to the pre-development peak discharges after the site has been developed. The site currently has two streams with ioo It buffers, one in the center of the site and another on the north boundary of the site. There are no ponds on the existing site. There are two stormwater Best Management Practice (BMP) proposed for the site to meet peak attenuation requirements and provide reductions of 85% Total Suspended Solids (TSS) and 25% Total Nitrogen (TN). The proposed BMPs are designed with a normal pool depth of three feet and meet the surface area and storage requirements as regulated by the North Carolina Department of Environment and Natural Resources. METHODOLOGY The stormwater study was conducted using the natural drainage features as depicted by the Wake County aerial topographic information (2-ft contours), field survey data and proposed development within the drainage areas. The Powell Tract was entered into the model as three drainage areas based on natural and proposed drainage patterns, to evaluate post development peak discharge rates. In the proposed model, the area was subdivided with two areas routed through the BMPs and the remaining area discharging directly to the outfall. The individual peak discharge rates from the three evaluation points were summed to get total pre- and post-development peak discharge. The scope of work included the following analyses: Hydrology ® ? Simulation of the 1-year, 5-year, to-year, and ioo-year rainfall events for the Cary area ? Formulation of the 1-year, 5-year, io-year, and loo-year flood hydrographs for the pre- and post-development drainage areas Hydraulic ? Routing the i-year, 5-year, io-year, and looyear flood hydrographs for post development runoff through the proposed stormwater BMPs The results of the hydrology calculations are used in the hydraulic analyses. The hydraulic design requires the development of stage-storage and stage-discharge functions for the two wet ponds. The rainfall/runoff hydrographs, stage-storage and stage-discharge functions have been compiled to create a routing computer simulation model using Haestad Methods PondPack vg.o software. This PondPack model was then used to assess the impact of the peak discharges for the design rainfall events. The PondPack modeling results are provided as appendices to this report. HYDROLOGY The Rational Method was used to determine peak discharge rates for the 1-year, 5-year, 10-year, and 100-year design storm events for the Cary, North Carolina area. The rational formula estimates the peak rate of runoff by using the drainage area, runoff coefficient, and mean rainfall intensity for a duration that is equal to the time of concentration. The rational formula is calculated as follows: 49 Powell Tract at Ten-Ten Rd i W&R Project 204028 Stormwater Management Report September 2004 49 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Q=CIA Where: Q = Peak flow form the drainage area (cfs) C = Coefficient of runoff I = Rainfall intensity (in/hr) A = Drainage area (acres) The runoff coefficients were determined using those values developed by Dr. H.R. Malcolm, North Carolina State University, and published in Handbook of Applied Hydrology, Chow, 1964. The values used for each drainage area are listed below in Table 1. TABLE 1. DRAINAGE AREA SUMMARY Pre-Development Drainage Area ##1 Description Acres Runoff Coefficient Open Space 16.29 0.22 Woods 0.42 0.20 Total 16.71 0.22 Drainage Area #2 Description Acres Runoff Coefficient Open Space 0.44 0.22 Woods 6.21 0.20 Total 6.65 0.20 Drainage Area #3 Description Acres Runoff Coefficient Impervious 0.82 0.95 Open Space 11.48 0.22 Woods 18.72 0.20 Total 31.02 0.23 Powell Tract at Ten-Ten Rd 2 W&R Project 204028 Stormwater Management Report September 2004 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Post Development Drainage Area #1 Description Acres Runoff Coefficient Onsite Open Space 0.90 0.22 Impervious Surface 3.57 0.95 Lots 12.24 0.40 Offsite Woods 2.5 0.20 Open Space 0.5 0.22 Impervious Surface 2.1 0.95 Total 21.81 0.51 Drainage Area #2 Description Acres Runoff Coefficient Onsite Open Space o.81 0.22 Impervious Surface 1.78 0.95 Lots 4.o6 0.40 Offsite Open Space 2.6 0.22 Impervious Surface o.6 0.95 Total 9.85 o.62 Powell Tract at Ten-Ten Rd 3 W&R Project 204028 Stormwater Management Report September 2004 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Drainage Area #3 Description Acres Runoff Coefficient Open Space 1.82 0.22 Woods 14.37 0.20 Impervious Surface 2.95 0.95 Lots 11.88 0.40 Total 31.02 0.35 The Modified Rational Method was used to size the detention storage for the two wet ponds due to the small drainage areas (<25 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 Kirpich (TN) method was used to compute pre-development time of concentrations for the drainage areas. The Kirpich (TN) equation is as follows: Tc = 0.00013 * (Lt'-n)*(St-0.385) Where: Tc = Time of Concentration (hrs) Lr - Flow Length (ft) Sr = Slope (ft/ft) The post-development time of concentration was set at 5 minutes for all drainage areas to account for the piped drainage systems and small areas of sheet flow. HYDRAULICS Computer simulated reservoir routing of the 1-year, 5-year, 1o-year, and loo-year design storms utilized stage-storage and stage-discharge functions. Stage-storage functions were derived from the proposed contours for the two wet ponds. A non-linear regression relation for surface area versus Powell Tract at Ten-Ten Rd 4 W&R Project 204028 Stormwater Management Report September 2004 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA elevation was derived for each BMP. This relation estimates the incremental volume of the basin to the stage or elevation of the basin. Stage-discharge functions were developed to size the outlet structure for the pond. CONCLUSIONS Based on the routing study, the post development peak discharge from the entire site is less than the pre-development peak forthe 1-year, 5-year, and 1o-year design storms. Table 2 below summarizes the peak attenuation results. Both ponds also contained the discharge from the 1oo- year storm without overtopping the dam. The resulting post development nitrogen export is 1.99 lbs/ac/yr for the site. A buy-down is not required since the nitrogen export is less than 3.6 lbs/ac/yr. Copies of the detailed supporting calculations for nitrogen export are provided in an appendix to this report. TABLE 2. PEAK ATTENUATION SUMMARY FOR THE 1-YEAR, 5-YEAR, AND 10-YEAR DESIGN STORMS 1-year Qpeak 5-year Q.peak 10-year Qpeak Pre-development Drainage Area #1 (Onsite Only) 17.77 cfs 23.07 cfs 25.38 cfs Drainage Area #2 (Onsite Only) 6.88 cfs 8.88 cfs 9.74 cfs Drainage Area #3 32.90 cfs 42.90 cfs 47.26 cfs Pre-Development Total 57.76 cfs 74.85 cfs 82.38 cfs Post-Development Drainage Area #1 o.16 cfs 0.19 cfs 0.20 cfs Drainage Area #2 0.05 cfs 0.05 cfs o.o6 cfs Drainage Area #3 55.64 cfs 71.79 cfs 78.77 cfs Post-Development Total 55.85 cfs 72.03 cfs 79.03 cfs Powell Tract at Ten-Ten Rd 5 W&R Project 204028 Stormwater Management Report September 2004 2'ON-SITE DA\# ?_ ,-,t - ? Acres v 1; f L7 ??- \ _ 31:02 Ace`s - _ - -: ,77777-7 Project Name: Powell Tract at Ten-Ten Road City/State: Cary, NC Project #: 204028 Date: 13-Jul-04 Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant RPmnval Fffirienrv in the Piedmont % Impervious Cover Permanent Pool Dept 3.0 4.0 5.0 6.0 h (feet) 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: NCULNK/UWQ Stormwater Best Management t'ractices, pg. 5, April 1999 WET POND #1 (85% TSS Reduction; 25% TN Reduction) Total On-site Drainage Area = 16.71 acres On-site Impervious Area = 6.63 acres % Impervious Surface Area = 39.7 % Surface Area of Permanent Pool: Assumed depth - 3 4 5 feet SA/DA ratio - 1.72 1.42 1.24 % Minimum pond surface area (SA) - (DA * SA/DA ratio)/100 SA = 0.287 0.237 0.207 acres 12499 10325 9032 sq. ft. Normal pool elevation 400.0 feet Surface area provided - 0.377 acres 16442 sq. ft. From Table 1.1 1-Inch Runoff Volume Calculation Using the runoff volume calculations in the "Simple Method" as described by Schueler 0 987) Rv v 0.05 + 0.009(1) where, Rv a Runoff coefficient, in./in. I - Percent impervious Rv s 0.41 in./in. Total runoff volume from 1-inch precipitation: Runoff volume, S - (Design rainfall) (Rv) (Drainage Area) S = 0.567 acre-ft 24690 cu. ft. Stormwater BMP Calcs Powell Ten-Ten Ju104.x1s - Pond #1 12/15/2004 Project Name: Powell Tract at Ten-Ten Road Project #: 204028 Ci State: Cary, NC Date: 13-Jul-04 Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant Rrmnval Fffirirnrv 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: NCUENK/UWQ 5tormwater best Management rracuces, pg. 5, Apm I vvv WET POND #2 (85% TSS Reduction; 25% TN Reduction) Total On-site Drainage Area = 6.65 acres On-site Impervious Area = 2.80 acres % Impervious Surface Area = 42.0 % Surface Area of Permanent Pool: Assumed depth e 3 4 5 feet SA/DA ratio e 1.81 1.50 1.31 % Minimum pond surface area (SA) - (DA * SA/DA ratio)/100 SA = 0.120 0.100 0.087 acres 5242 4350 3787 sq. ft. Normal pool elevation o 390.0 feet Surface area provided m 0.141 acres 6124 sq. ft. From Table 1.1 1-Inch Runoff Volume Calculation Using the runoff volume calculations in the "Simple Method" as described by Schueler 0987) Rv - 0.05 + 0.009() where, Rv - Runoff coefficient, inJin. - Percent impervious Rv - 0.43 in./in. Total runoff volume from 1-inch precipitation: Runoff volume, S - (Design rainfall) (Rv) (Drainage Area) S = 0.237 acre-ft 10342 cu. ft. Orifice Calculator Wet Pond #1 Q =Cd*A*(2gh)^(112 Variables Constants WQ Volume: 0.82601 Acre-ft 35981 cf g = 32.2 ft/s2 Head: 4.5 ft 2.25 ft Cd= 0.6 Draw down time: 63 hrs 226800 s Orifice Area = 0.021966 sq. ft 3.163058 sq. in Orifice Diameter = 2.0 in Wet Pond #2 Q =Cd*A*(2gh)^(1/2 Variables Constants WQ Volume: 0.332 Acre-ft 14461.92 cf g = 32.2 ft/s2 Head: 5 ft 2.5 ft Cd= 0.6 Draw down time: 95 hrs 342000s Orifice Area = 0.005554 sq. ft 0.799831 sq. in Orifice Diameter = 1.0 in PRE-DEVELOPMENT CALCULATIONS Powell Tract at Ten-Ten Rd 6 W&R Project 204028 Stormwater Management Report September 2004 • e • 0 • • e e • • • • • • • • • • • e e 0 e • 0 e • e • • • e • • • • • • • • • • • • Job File: K:\04\04-020\04028\H&H\PondPack\Rational\PRE_DAl_RATIONAL.PPW Job File: K:\04\04-020\04028\fi&H\PondPack\Rational\PRE_DA2_RATIONAL.PPW Job File: K:\04\04-020\04028\H&H\PondPack\Rational\PRE_DA3_RATIONAL.PPW Rain Dir: K:\04\04-020\04028\H&H\PondPack\Rational\ -------------------------- -------------------------- JOB TITLE -------------------------- -------------------------- Project Date: 9/3/2004 Project Engineer: Withers and Ravenel Project Title: Powell Tract at Ten-Ten Rd POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT Project Comments: This report documents pre-development peak discharge rates for the drainage areas in the Powell Tract. SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 12:52 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT Table of Contents i Table of Contents ********************** RAINFALL DATA *********************** 1-year IDF...... 5-year IDF...... 10-year IDF..... 100-year IDF.... 1 yr I-D-F Table ........................ 1.01 5 yr I-D-F Table ........................ 1.01 10 yr I-D-F Table ........................ 1.02 100 yr I-D-F Table ........................ 1.02 ********************** TC CALCULATIONS ********************* DA 1............ PRE Tc Calcs ........................... 2.01 DA 2............ PRE Tc Calcs ........................... 2.02 DA 3............ PRE Tc Calcs ........................... 2.03 ****************** RATIONAL METHOD CALCS ******************* DA 1............ PRE C and Area ......................... 3.01 Rational Predev. Peak Q ............ 3.02 DA 2............ PRE C and Area ......................... 3.03 Rational Predev. Peak Q ............ 3.04 DA 3............ PRE C and Area ......................... 3.05 Rational Predev. Peak Q ............ 3.06 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 12:52 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT Type.... I-D-F Table Page 1.01 Name.... 1-year IDF Tag: 1 yr Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 1-year IDF Tag: 1 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 5.1000 .1670 4.2000 .2500 3.5000 .3330 3.0000 .5000 2.3800 1.0000 1.5000 2.0000 .8900 3.0000 .6500 6.0000 .3830 12.0000 .2330 24.0000 .1250 Type.... I-D-F Table Page 1.01 Name.... 5-year IDF Tag: 5 yr Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 5-year IDF Tag: 5 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 6.5800 .1670 5.5400 .2500 4.7400 .3300 4.1200 .5000 3.2800 .6670 2.7700 .8330 2.3800 1.0000 2.1200 1.5000 1.5200 2.0000 1.2000 3.0000 .8900 6.0000 .5600 12.0000 .3300 24.0000 .1900 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 12:52 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT Type.... I-D-F Table Page 1.02 Name.... 10-year IDF Tag: 10 yr Event: 10 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 10-year IDF Tag: 10 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 7.2200 .1670 6.1300 .2500 5.2500 .3300 4.6400 .5000 3.7100 .6670 3.1500 .8330 2.7100 1.0000 2.4100 1.5000 1.7400 2.0000 1.3700 3.0000 1.0200 6.0000 .6500 12.0000 .3900 24.0000 .2200 Type.... I-D-F Table Page 1.02 Name.... 100-year IDF Tag: 100 yr Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 100-year IDF Tag: 100 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 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 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 12:52 PM Date: 9/4/2004 ® POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT ® ® Type.... Tc Calcs Page 2.01 ® Name.... DA 1 Tag: PRE ® File.... K:\04\04-020\04028\11&H\PondPack\Rational\PRE-DAI-RATIONAL.PPW ® ................ ........................................................ ........................... ® TIME OF CONCENTRATION CALCULATOR ........................................................................ ® ---------------- -------------------------------------------------------- ® Segment #1: Tc: Kirpich (TN) ® Hydraulic Length 1390.62 ft Slope .047500 ft/ft ® Multiplier 1.000 (Tc Adjustment) ® Avg.Velocity 3.49 ft/sec ® Segment #1 Time: .1106 hrs ® ----------------- ------------------------------------------------------- ® Total Tc: .1106 hrs ® Type.... Tc Calcs Page 2.01 Name.... DA 1 Tag: PRE ® File.... K:\04\04- 020\04028\H&H\PondPack\Rational\PRE DA1 RATIONAL.PPW ------------- ® ---- Tc Equations used ------------------------------------------------------- ... ----------------- ------------------------------------------------------- ® Kirpich (TN) ® Tc = 0.00013 * (Lf**0.77) * (Sf**-0.385) * Mt ® Where: Tc = Time of concentration, hrs Lf = Flow length, ft ® Sf = Slope, ft/ft Mt = Tc Multiplier (Tc adjustment) ® SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 12:52 PM Date: 9/4/2004 40 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT - PRE-DEVELOPMENT Type.... Tc Calcs Page 2.02 Name.... PRE DA 2 Tag: PRE File.... K:\04\04-020\04028\H&H\PondPack\Rational\PRE DA2 RATIONAL.PPW ........................................................................ ........................................................................ TIME OF CONCENTRATION CALCULATOR ........................................................................ ........................................................................ Segment #1: Tc: Kirpich (TN) Hydraulic Length 682.68 ft Slope .067400 ft/ft Multiplier 1.000 (Tc Adjustment) Avg.Velocity 3.39 ft/sec Segment #1 Time: .0559 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .0559 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------- ------------------------- Type.... Tc Calcs Page 2.02 Name.... PRE DA 2 Tag: PRE File.... K:\04\04-020\04028\H&ii\PondPack\Rational\PRE DA2 RATIONAL.PPW ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ==== Kirpich (TN) Tc = 0.00013 * (Lf**0.77) * (Sf**-0.385) * Mt Where: Tc = Time of concentration, hrs Lf = Flow length, ft Sf = Slope, ft/ft Mt = Tc Multiplier (Tc adjustment) SIN: 22160372EiC5 Withers & Ravenel PondPack Ver. 9.0029 Time: 12:52 PM Date: 9/4/2004 e e e NT Pe 2. 03 e e e'------ e e e e e 969 hrs or ------ e======= w 1 69 hrs ====== 2.03 e e e e e e e e e e e e e e Ste: 9/4/2004 e e • TRACT AT TEN-TEN RD )UTPUT - PRE-DEVELOPMENT Page 3.02 Event: 1 yr ick\Rational\PRE DA1 RATIONAL.PPW 1ETHOD PEAK DISCHARGES ) CONDITIONS --- e Conversion = 43560 / (12 * 3600) :ve :DF :DF IDF IDF Tc = .1106 hrs --- - ------------- I ---- - -- Area I Peak Q in/hr acres 1 cfs •------------ 1 4.8045 ----------I 16.710 1 ---------- 17.77 6.2385 16.710 1 23.07 i 6.8621 16.710 1 25.38 9.2866 ------------ 16.710 I ---------- 34.35 1 Ravenel :52 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Job File: K:\04\04-020\04028\11&H\PondPack\Rational\DA1_RATIONAL.PPW Rain Dir: K:\04\04-020\04028\H&H\PondPack\Rational\ JOB TITLE Project Date: 9/3/2004 Project Engineer: Withers and Ravenel Project Title: Powell Tract at Ten-Ten Rd Project Comments: This report documents the post-development peak discharge rates for the drainage area, onsite and offsite, of Pond #1. DESIGN SUMMARY Pond #1 - Normal Pool = 400 ft Bottom Elevation = 396 ft Top of Dam = 407 ft Required Surface Area = 0.237 Acres (10,325 ft2) Surface Area Provided = 0.377 Acres (16,442 ft2) Required WQ Storage Volume = 0.567 Acre-ft (24,690 ft3) WQ Storage Volume Provided = 0.826 Acre-ft (35,981 ft3) 10-year Calculated Freeboard = 3.40 ft 100-year Calculated Freeboard = 2.21 ft Outlet Structure: 3 ft x 3 ft Inlet Box Riser - Crest = 404.5 ft Orifice @ 400 ft - 2 in circular 12 in RCP Culvert SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Table of Contents i Table of Contents ++++++++++++++++++++++ MASTER SUMMARY ++++++++++++++++++++++ Watershed....... Mod. Rational Grand Summary ........ 1.01 Master Network Summary ............. 1.02 ++++++++++****+++++*++ RAINFALL DATA +++++++++++++++++++++++ 1-year IDF...... 1 yr I-D-F Table ........................ 2.01 10-year IDF..... 10 yr I-D-F Table ........................ 2.02 100-year IDF.... 100 yr I-D-F Table ........................ 2.03 5-year IDF...... 5 yr I-D-F Table ........................ 2.04 ++++++++++++++++++++++ TC CALCULATIONS +++++++++++*+++++++++ DA 1............ POST Tc Calcs ........................... 3.01 +++++++++++++++++++++++ POND VOLUMES +++++++++++++++++++++++ POND 10......... Vol: Elev-Area ..................... 4.01 ******************** OUTLET STRUCTURES ********************* Outlet 1........ Outlet Input Data .................. 5.01 SIN: PondPack Ver: Compute Time: SIN: 22160372EICS Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: Date: 12/15/2004 e ® POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT ® ® Table of Contents ii ® Table of Contents (continued) ® Composite Rating Curve ............. 5.04 ® *********** ******* RATIONAL METHOD CALCS ************* ****** ® DA 1....... ..... 1 yr Mod. Rational Storm Calcs .......... 6.01 DA 1....... ..... 5 yr 6 02 Mod. Rational Storm Calcs .......... . ® DA 1....... ..... POST ® C and Area ......................... 6.03 ® DA 1....... ..... 10 yr Mod. Rational Storm Calcs .......... 6.04 ® ® DA 1....... ..... 100 yr Mod. Rational Storm Calcs .......... 6.05 ® SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Mod. Rational Grand Summary Page 1.01 Name.... Watershed File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + + + + * MODIFIED RATIONAL METHOD * ---- Grand Summary For All Storm Frequencies ---- + + + + ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) ................ Area = ......... 21.810 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 .509 .3833 2.8131 31.46 30.16 .997 .415 5 .509 .4000 3.7741 42.21 39.19 1.395 .613 10 .509 .4167 4.1659 46.59 43.12 1.604 .713 100 .509 .4333 5.7550 64.36 58.40 2.305 1.058 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 s POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Master Network Summary Page 1.02 Name.... Watershed File.... K:\04\04-020\04028\H&fi\PondPack\Rational\DAl_RATIONAL.PPW MASTER DESIGN STORM SUMMARY Default Network Design Storm File, ID Return Event ------------ 1 yr 5 yr 10 yr 100 yr Rainfall Type --------------- I-D-F Curve I-D-F Curve I-D-F Curve I-D-F Curve Wake Co IDF Stor IDF ID 1-year IDF 5-year IDF 10-year IDF 100-year IDF MASTER NETWORK SUMMARY Modified Rational Method Network (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Node ID Type Event ac-ft Trun - ----- DA 1 ------ ------ ---- AREA ------ 1 --------- .997 DA 1 AREA 5 1.395 DA 1 AREA 10 1.604 DA 1 AREA 100 2.305 *OUT 10 JCT 1 .977 *OUT 10 JCT 5 1.362 *OUT 10 JCT 10 1.557 *OUT 10 JCT 100 2.170 POND 10 IN POND 1 .997 POND 10 IN POND 5 1.395 POND 10 IN POND 10 1.604 POND 10 IN POND 100 2.305 SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 10:51 AM Max Qpeak Qpeak Max WSEL Pond Storage hrs cfs ft ac-ft ----- ------------ - --------- .0833 -------- 31.46 - - .0833 42.21 .0833 46.59 .0833 •64.36 .4998 .16 .4998 .19 .4998 .20 .5831 6.37 .0833 31.46 .0833 42.21 .0833 46.59 .0833 64.36 Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA41 - POST-DEVELOPMENT Type.... Master Network Summary Page 1.03 Name.... Watershed File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA1 RATIONAL.PPW MASTER NETWORK SUMMARY Modified Rational Method Network (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: 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 ------------ POND 10 OUT POND 1 .977 .4998 .16 402.37 .992 POND 10 OUT POND 5 1.362 .4998 .19 403.20 1.390 POND 10 OUT POND 10 1.557 .4998 .20 403.61 1.599 POND 10 OUT POND 100 2.170 .5831 6.37 404.80 2.234 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... I-D-F Table Page 2.01 Name.... 1-year IDF Tag: 1 yr Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 1-year IDF Tag: 1 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 5.1000 .1670 4.2000 .2500 3.5000 .3330 3.0000 .5000 2.3800 1.0000 1.5000 2.0000 .8900 3.0000 .6500 6.0000 .3830 12.0000 .2330 24.0000 .1250 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... I-D-F Table Name.... 10-year IDF Tag: 10 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 10-year IDF Tag: 10 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 7.2200 .1670 6.1300 .2500 5.2500 .3300 4.6400 .5000 3.7100 .6670 3.1500 .8330 2.7100 1.0000 2.4100 1.5000 1.7400 2.0000 1.3700 3.0000 1.0200 6.0000 .6500 12.0000 .3900 24.0000 .2200 Page 2.02 Event: 10 yr SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... I-D-F Table Page 2.03 Name.... 100-year IDF Tag: 100 yr Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 100-year IDF Tag: 100 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 9.7200 .1670 8.4000 .2500 7.2400 .3330 6.4700 .5000 5.2800 .6670 4.4800 .6330 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 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... I-D-F Table Page 2.04 Name.... 5-year IDF Tag: 5 yr Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 5-year IDF Tag: 5 yr Rainfall-Intensity-Duration Curve Time, hrs ----------- Intens., in/hr ----------- .0830 6.5800 .1670 5.5400 .2500 4.7400 .3300 4.1200 .5000 3.2800 .6670 2.7700 .8330 2.3800 1.0000 2.1200 1.5000 1.5200 2.0000 1.2000 3.0000 .8900 6.0000 .5600 12.0000 .3300 24.0000 .1900 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Tc Calcs Page 3.03 Name.... DA 1 Tag: POST File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW ............................. .. TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: User Defined Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ==== User Defined ------------------- - Tc = Value entered by user Where: Tc = Time of concentration SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Vol: Elev-Area Name.... POND 10 Page 4.01 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) ------------ (sq.in) (acres) ------------------ (acres) ---- - (ac-ft) - (ac-ft) - - 400.00 --- ----- .3775 -- ---------- .0000 ------ -- .000 ---------- - .000 401.00 ----- .4126 1.1848 .395 .395 401.50 ----- .4310 1.2653 .211 .606 402.00 ----- .4490 1.3199 .220 .826 403.00 ----- .4868 1.4033 .468 1.294 404.00 ----- .5259 1.5187 .506 1.800 405.00 ----- .5663 1.6379 .546 2.346 406.00 ----- .6081 1.7612 .587 2.933 407.00 ----- .6512 1.8886 .630 3.562 POND VOLUME EQUATIONS * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-EL1) * (Areal + Areal + sq.rt.(Areal*Area2)) where: EL1, EL2 = Lower and upper elevations of the increment Areal,Area2 = Areas computed for EL1, EL2, respectively Volume = Incremental volume between EL1 and EL2 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW REQUESTED POND WS ELEVATIONS: Min. Elev.= 400.00 ft Increment = .05 ft Max. Elev.= 407.00 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 Page 5.01 Inlet Box RS ---> CU 404.500 407.000 Orifice-Circular OR ---> CU 400.000 407.000 Culvert-Circular CU ---> TW 396.000 407.000 TW SETUP, DS Channel SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 Page 5.02 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA1 RATIONAL.PPW OUTLET STRUCTURE INPUT DATA Structure ID = RS Structure Type = Inlet Box ----------------- # of Openings ------------- = 1 ------ Invert Elev. = 404.50 ft orifice Area = 9.0000 sq.ft Orifice Coeff. _ .600 Weir Length = 12.00 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. = 400.00 ft Diameter = .1667 ft Orifice Coeff. _ .600 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 Page 5.03 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW OUTLET STRUCTURE INPUT DATA Structure ID = CU Structure Type = Culvert-Circular ----------------- ------------------ No. Barrels - = 1 Barrel Diameter = 1.0000 ft Upstream Invert = 396.00 ft Dnstream Invert = 395.50 ft Horiz. Length = 80.00 ft Barrel Length = 80.00 ft Barrel Slope = .00625 ft/ft OUTLET CONTROL DATA... Mannings n = .0130 Ke = .5000 Kb = .031274 Kr = .5000 HW Convergence = .001 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) = 1.157 T2 ratio (HW/D) = 1.304 Slope Factor = -.500 (forward entrance loss) (per ft of full flow) (reverse entrance loss) +/- ft 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 = 397.16 ft ---> Flow = 2.75 cfs At T2 Elev = 397.30 ft ---> Flow = 3.14 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 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.04 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Elev. Q ft cfs -------- 400.00 ------- .00 400.05 .00 400.10 .01 400.15 .02 400.20 .04 400.25 .04 400.30 .05 400.35 .05 400.40 .06 400.45 .06 400.50 .07 400.55 .07 400.60 .08 400.65 .08 400.70 .08 400.75 .09 400.80 .09 400.85 .09 400.90 .09 400.95 .10 401.00 .10 401.05 .10 401.10 .11 401.15 .11 401.20 .11 401.25 .11 401.30 .12 401.35 .12 401.40 .12 401.45 .12 401.50 .13 401.55 .13 401.60 .13 401.65 .13 401.70 .13 401.75 .14 401.80 .14 401.85 .14 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures (no Q: RS, OR, CU) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 s s S • • s s • e • • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.05. File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q ---------------- Elev. Q ft cfs 401.90 401.95 402.00 402.05 402.10 402.15 402.20 402.25 402.30 402.35 402.40 402.45 402.50 402.55 402.60 402.65 402.70 402.75 402.80 402.85 402.90 402.95 403.00 403.05 403.10 403.15 403.20 403.25 403.30 403.35 403.40 403.45 403.50 403.55 403.60 403.65 403.70 403.75 .14 .14 .15 .15 .15 .15 .15 .15 .16 .16 .16 .16 .16 .16 .17 .17 .17 .17 .17 .17 .18 .18 .18 .18 .18 .18 .19 .19 .19 .19 .19 .19 .19 .20 .20 .20 .20 .20 SIN: 22160372E1C5 PondPack Ver. 9.0029 -------- Converge TW Elev Error ft +/-ft -------- ----- Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free outfall Free Outfall Free outfall Free Outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q,: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.06 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA1 RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q ---------------- Elev. Q ft cfs 403.80 403.85 403.90 403.95 404.00 404.05 404.10 404.15 404.20 404.25 404.30 404.35 404.40 404.45 404.50 404.55 404.60 404.65 404.70 404.75 404.80 404.85 404.90 404.95 405.00 405.05 405.10 405.15 405.20 405.25 405.30 405.35 405.40 405.45 405.50 405.55 405.60 405.65 .20 .20 .21 .21 .21 .21 .21 .21 .21 .21 .22 .22 .22 .22 .22 .64 1.40 2.39 3.55 4.88 6.33 7.86 9.13 9.16 9.18 9.21 9.24 9.26 9.29 9.32 9.34 9.37 9.40 9.42 9.45 9.48 9.50 9.53 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 s • • s • s s • • • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.07 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Elev. Q ft cfs -------- 405.70 9.55 ------- 405.75 9.58 405.80 9.61 405.85 9.63 405.90 9.66 405.95 9.68 406.00 9.71 406.05 9.73 406.10 9.76 406.15 9.78 406.20 9.81 406.25 9.83 406.30 9.86 406.35 9.88 406.40 9.91 406.45 9.93 406.50 9.96 406.55 9.98 406.60 10.01 406.65 10.03 406.70 10.06 406.75 10.08 406.80 10.11 406.85 10.13 406.90 10.16 406.95 10.18 407.00 10.21 SIN: 22160372E1C5 PondPack Ver. 9.0029 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free outfall Free outfall Free outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free outfall Free Outfall Free Outfall Free Outfall Free outfall Free Outfall Free Outfall Free outfall Free outfall Free Outfall Free Outfall Free outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.01 Name.... DA 1 Tag: 1 yr Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW Storm... 1-year IDF Tag: 1 yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN FREQUENCY: 1 yr -C' Adjustment = 1.000Allowable Q = 30.16 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .3833 hrs Tc = .0833 hrs Hydrograph File: 1 yr ................. ......... ........... ......... ............ .................. VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'Cl 'C' hrs in/hr acres cfs ac-ft ac-ft ----------------- .509 .509 --------- .0833 ----------- 5.0968 --------- 21.810 -------- --- 57.00 --------- .392 --------- .183 .509 .509 .1667 4.2036 21.810 47.01 .647 .336 .509 .509 .2500 3.5000 21.810 39.14 .809 .393 .509 .509 .3333 2.9988 21.810 33.53 .924 .405 ************************************************************ Storage Maximum .509 .509 .3833 2.8131 21.810 31.46 .997 .415 **************************************************************************** .509 .509 .5000 2.3800 21.810 26.62 Qpeak < Qallow SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 • • • • • • • • • • • • • • • • s • • • • • • • • • • • • • • e • • • • • • • • • • • • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.02 Name.... DA 1 Tag: 5 yr Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAl_RATIONAL.PPW Storm... 5-year IDF Tag: 5 yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN FREQUENCY: 5 yr 'C' Adjustment = 1.000Allowable Q = 39.19 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .4000 hrs Tc = .0833 hrs Hydrograph File: 5 yr ................. ......... ........... ........ ............. .....VOLUMES...... Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' Oct hrs - in/hr acres cfs ac-ft ac-ft -- ----------------- .509 .509 -------- .0833 ----------- 6.5763 -------- 21.810 --------- --- 73.54 --------- .506 ------- .238 .509 .509 .1667 5.5441 21.810 62.00 .854 .449 .509 .509 .2500 4.7400 21.810 53.01 1.095 .555 .509 .509 .3333 4.1035 21.810 45.89 1.264 .589 ******:***************************************************** Storage Maximum .509 .509 .4000 3.7741 21.810 42.21 1.395 .613 **************************************************************************** 509 .509 .5000 3.2800 21.810 36.68 Qpeak < Qallow SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... C and Area Page 6.03 Name.... DA 1 Tag: POST File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW RATIONAL C COEFFICIENT DATA ......................................................................... ......................................................................... Area C x Area Soil/Surface Description C acres acres -------------------------------- Impervious -------- .9500 ---------- 3.570 ---------- 3.392 Open Space .2200 .900 .198 Lots .4000 12.240 4.896 Woods - Offsite .2000 2.500 .500 Pasture - Offsite .2200 .500 .110 Impervious - Offsite .9500 2.100 1.995 WEIGHTED C & TOTAL AREA ---> ................................. ................................. .5085 ............ ............ 21.810 .............. .............. 11.091 .............. .............. SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.04 Name.... DA 1 Tag: 10 yr Event: 10 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW Storm... 10-year IDF 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 = 43.12 ---------- cfs --------- Hydrograph Storm Duration, Td = .4167 hrs Tc = .0833 hrs Hydrograph File: ................. 10 yr ......... ........... ......... ........... ........... ........ ................. ......... ........... ......... ........... ................... VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage Oct ------- -- hrs in/hr acres cfs ac-ft ac-ft - ------- .509 .509 --------- .0833 ----------- 7.2161 --------- 21.810 -------- --- 80.70 ---------- .556 -------- .248 .509 .509 .1667 6.1343 21.810 68.60 .945 .499 .509 .509 .2500 5.2500 21.810 58.71 1.213 .619 .509 .509 .3333 4.6218 21.810 51.68 1.424 .681 ****************:************.****************************** Storage Maximum .509 .509 .4167 4.1659 21.810 46.59 1.604 .713 .509 .509 .5000 3.7100 21.810 41.49 Qpeak < Qallow SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 10:51 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#1 - POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.05 Name.... DA 1 Tag: 100 yr Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DAlRATIONAL.PPW Storm... 100-year IDF 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 = 58.40 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .4333 hrs Tc = .0833 hrs Hydrograph File: ................. 100 yr ......... ........... ........ ............ .......... ......... ................. ......... ........... ........ ............ ................... VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' Oct hrs in/hr acres cfs ac-ft ac-ft ----------------- .509 .509 --------- .0833 ----------- 9.7153 -------- 21.810 --------- -- 108.64 ---------- .748 --------- .341 .509 .509 .1667 8.4052 21.810 93.99 1.295 .691 .509 .509 .2500 7.2400 21.810 80.96 1.673 .869 .509 .509 .3333 6.4676 21.810 72.33 1.992 .987 ************************************************************ Storage Maximum .509 .509 .4333 5.7550 21.810 64.36 2.305 1.058 **************************************************************************** 509 .509 .5000 5.2800 21.810 59.05 2.440 1.032 509 .509 .6667 4.4816 21.810 50.12 Qpeak < Qallow SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 10:51 AM Date: 12/15/2004 • s O • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Job File: K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW Rain Dir: K:\04\04-020\04028\H&H\PondPack\Rational\ JOB TITLE Project Date: 9/3/2004 Project Engineer: Withers and Ravenel Project Title: Powell Tract at Ten-Ten Rd Project Comments: This report documents the post-development peak discharge rates for the drainage area, onsite and offsite, of Pond #2. DESIGN SUMMARY: Pond #2 - Normal Pool = 390 ft Bottom Elevation = 386 ft Top of Dam = 397ft Required Surface Area = 0.100 Acres (4,350 ft2) Surface Area Provided = 0.141 Acres (6,124 ft') Required WQ Storage Volume = 0.237 Acre-ft (24,690 ft3) WQ Storage Volume Provided = 0.332 Acre-ft (14,462 ft3) 10-year Calculated Freeboard = 2.11 ft 100-year Calculated Freeboard = 1.80 ft Outlet Structure: 3 ft x 3 ft Inlet Box - Crest = 395 ft Orifice © 390 ft - 1 in circular 12 in RCP Culvert SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Table of Contents i Table of Contents ********************** MASTER SUMMARY ********************** Watershed....... Mod. Rational Grand Summary ........ 1.01 Master Network Summary ............. 1.02 I ********************** RAINFALL DATA *********************** 1-year IDF...... 1 yr I-D-F Table ........................ 2.01 10-year IDF..... 10 yr I-D-F Table ........................ 2.02 100-year IDF.... 100 yr I-D-F Table ........................ 2.03 5-year IDF...... 5 yr I-D-F Table ........................ 2.04 ********************** TC CALCULATIONS ********************* DA 2............ POST Tc Calcs ........................... 3.01 *********************** POND VOLUMES *********************** POND 2.......... Vol: Elev-Area ..................... 4.01 ******************** OUTLET STRUCTURES ********************* Outlet 1........ Outlet Input Data .................. 5.01 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 ® POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT ® Table of Contents ii ® Table of Contents (continued) ® Composite Rating Curve ............. 5.04 ****************** RATIONAL METHOD CALCS ******************* ® DA 2............ 1 yr ® Mod. Rational Storm Calcs .......... 6.01 ® DA 2............ 5 yr Mod. Rational Storm Calcs .......... 6.02 ® DA 2............ POST C and Area 6.03 ® DA 2............ 10 yr ® Mod. Rational Storm Calcs .......... 6.04 ® DA 2............ 100 yr Mod. Rational Storm Calcs .......... 6.05 ® SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Mod. Rational Grand Summary Page 1.01 Name.... Watershed File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW ************************************************************************ ************************************************************************ * * * * * MODIFIED RATIONAL METHOD * ---- Grand Summary For All Storm Frequencies ---- * * * * ************************************************************************ ************************************************************************ Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) ................ Area = ......... 9.850 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 .619 .6333 2.1453 13.19 12.57 .690 .318 5 .619 .5667 3.0764 18.91 16.24 .885 .449 10 .619 .5833 3.4306 21.08 17.83 1.016 .525 100 .619 .6000 4.8010 29.51 24.04 1.463 .784 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 n • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT • ® Type .... Master Network Summary Page 1.02 • Name .... Watershed File .... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW ® _ • MASTER DESIGN STORM SUMMARY • ® Default Network Design Storm File, ID Wake Co IDF Stor • ® Rainfall Return Event Type IDF ID • ------------ --------------- -------------- -- 1 yr I-D-F Curve 1-year IDF • 5 yr I-D-F Curve 5-year IDF 10 yr I-D-F Curve 10-year IDF • 100 yr I-D-F Curve 100-year IDF • ® MASTER NETWORK SUMMARY • Modified Rational Method Network ® (*Node=Outfall; +Node=Diversion;) • (Trun= HYG Truncation: 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 ------- DA 2 ---------- ---- ------ ---------- -- -------- AREA 1 .690 .0833 - -------- -------- ------------ 13.19 ® DA 2 AREA 5 .885 .0833 18.91 DA 2 AREA 10 1.016 .0833 21.08 ® ® *OUT 10 JCT *OUT 10 JCT • *OUT 10 JCT • *OUT 10 DA 2 AREA 100 1.463 .0833 29.51 JCT • POND 2 IN POND POND 2 IN POND • POND 2 IN POND POND 2 IN POND • • • • • • • • • ® SIN: 22160372E1C5 PondPack Ver. 9.0029 • • • 1 .532 .7497 .05 5 .617 .5831 .05 10 .665 .5831 .06 100 1.091 .6664 9.92 1 .690 .0833 13.19 5 .885 .0833 18.91 10 1.016 .0833 21.08 100 1.463 .0833 29.51 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Master Network Summary Page 1.03 Name.... Watershed File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW MASTER NETWORK SUMMARY Modified Rational Method Network (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Qpeak Node ID Type Event ac-ft Trun ------- -- hrs --------- ------ POND ----- 2 ------ OUT ---- POND ------ 1 --- .532 .7497 POND 2 OUT POND 5 .617 .5831 POND 2 OUT POND 10 .665 .5831 POND 2 OUT POND 100 1.091 .6664 Max Qpeak Max WSEL Pond Storage cfs ft ac-ft ------------ -------- .05 -------- 393.65 .688 .05 394.43 .883 .06 394.91 1.014 9.92 395.93 1.311 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 0 0 0 0 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... I-D-F Table Page 2.01 Name.... 1-year IDF Tag: 1 yr Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 1-year IDF Tag: 1 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 5.1000 .1670 4.2000 .2500 3.5000 .3330 3.0000 .5000 2.3800 1.0000 1.5000 2.0000 .8900 3.0000 .6500 6.0000 .3830 12.0000 .2330 24.0000 .1250 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... I-D-F Table Page 2.02 Name.... 10-year IDF Tag: 10 yr Event: 10 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 10-year IDF Tag: 10 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 7.2200 .1670 6.1300 .2500 5.2500 .3300 4.6400 .5000 3.7100 .6670 3.1500 .8330 2.7100 1.0000 2.4100 1.5000 1.7400 2.0000 1.3700 3.0000 1.0200 6.0000 .6500 12.0000 .3900 24.0000 .2200 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... I-D-F Table Page 2.03 Name.... 100-year IDF Tag: 100 yr Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 100-year IDF Tag: 100 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 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 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... I-D-F Table Page 2.04 Name.... 5-year IDF Tag: 5 yr Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 5-year IDF Tag: 5 yr Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 6.5800 .1670 5.5400 .2500 4.7400 .3300 4.1200 .5000 3.2800 .6670 2.7700 .8330 2.3800 1.0000 2.1200 1.5000 1.5200 2.0000 1.2000 3.0000 .8900 6.0000 .5600 12.0000 .3300 24.0000 .1900 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 • • • • • • • • • • • • • • • • • • • • • • s • • • • • • • • • • • e • • • • • s • • • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Tc Calcs Page 3.01 Name.... DA 2 Tag: POST File.... K:\04\04-020\04028\H&11\PondPack\Rational\DA2_RATIONAL.PPW TIME OF CONCENTRATION CALCULATOR ........................................................................ ........................................................................ Segment 41: Tc: User Defined Segment #1 Time: .0833 hrs ------------------------------------------------------------------------ ------------------------- Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ==== User Defined Tc = Value entered by user Where: Tc = Time of concentration SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Vol: Elev-Area Name.... POND 2 Page 4.01 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) --------- (sq.in) (acres) --------------------- (acres) ----------------- (ac-ft) --------- (ac-ft) ------------- -- 390.00 - ----- .1406 .0000 .000 .000 391.00 ----- .1659 .4592 .153 .153 391.50 ----- .1790 .5172 .086 .239 392.00 ----- .1925 .5571 .093 .332 393.00 ----- .2204 .6189 .206 .538 394.00 ----- .2497 .7047 .235 .773 395.00 ----- .2803 .7946 .265 1.038 396.00 ----- .3122 .8883 .296 1.334 397.00 ----- .3455 .9861 .329 1.663 POND VOLUME EQUATIONS * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2)) where: EL1, EL2 = Lower and upper elevations of the increment Areal,Area2 = Areas computed for EL1, EL2, respectively Volume = Incremental volume between EL1 and EL2 SIN: 22160372EICS Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 0 • • 0 • • • • • • • • • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW REQUESTED POND WS ELEVATIONS: Min. Elev.= 390.00 ft Increment = .05 ft Max. Elev.= 397.00 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 Page 5.01 Inlet Box RS ---> CU 395.000 397.000 Orifice-Circular OR ---> CU 390.000 397.000 Culvert-Circular CU ---> TW 386.000 397.000 TW SETUP, DS Channel SIN: 22160372EICS PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 Page 5.02 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW OUTLET STRUCTURE INPUT DATA Structure ID = RS Structure Type = Inlet Box ----------------- # of Openings ------------ = 1 ------- Invert Elev. = 395.00 ft Orifice Area = 9.0000 sq.ft Orifice Coeff. _ .600 Weir Length = 12.00 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. = 390.00 ft Diameter = .0833 ft Orifice Coeff. _ .600 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 • e • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Outlet Input Data Name.... Outlet 1 Page 5.03 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW OUTLET STRUCTURE INPUT DATA Structure ID = CU Structure Type = Culvert-Circular ------------------ No. Barrels ----------- = 1 ------- Barrel Diameter = 1.0000 ft Upstream Invert = 386.00 ft Dnstream Invert = 385.00 ft Horiz. Length = 80.00 ft Barrel Length = 80.01 ft Barrel Slope = .01250 ft/ft OUTLET CONTROL DATA... Mannings n = .0130 Ke = .5000 Kb = .031274 Kr = .5000 HW Convergence = .001 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) = 1.153 T2 ratio (HW/D) = 1.301 Slope Factor = -.500 (forward entrance loss) (per ft of full flow) (reverse entrance loss) +/- ft 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 = 387.15 ft ---> Flow = 2.75 cfs At T2 Elev = 387.30 ft ---> Flow = 3.14 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 SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.04 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Elev. Q ft cfs -------- 390.00 ------- .00 390.05 .00 390.10 .01 390.15 .01 390.20 .01 390.25 .01 390.30 .01 390.35 .01 390.40 .02 390.45 .02 390.50 .02 390.55 .02 390.60 .02 390.65 .02 390.70 .02 390.75 .02 390.80 .02 390.85 .02 390.90 .02 390.95 .02 391.00 .03 391.05 .03 391.10 .03 391.15 .03 391.20 .03 391.25 .03 391.30 .03 391.35 .03 391.40 .03 391.45 .03 391.50 .03 391.55 .03 391.60 .03 391.65 .03 391.70 .03 391.75 .03 391.80 .03 391.85 .04 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures (no Q: RS,OR,CU) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 395.95 9.93 Free Outfall RS,CU (no Q: OR) POWE LL TRACT AT TEN-TEN RD PONDPACK OUT PUT FOR DA#2- POST-DEVELOPMENT • Type.... Composite Rating Curve Page 5.05 • Name.... Outlet 1 • File.... K:\04\04- 020\0 4028\H&H\PondPack\R ational \DA2 RATIONAL.PPW • *** ** COMPOSITE OUTFLOW SUMMARY ** ** WS Elev, Total Q Notes ---------------- ----- --- Converge ------ ---- --- ------------ Elev. Q TW Elev Error ft -- cfs ft +/-ft Contributing Structures -- ---- 391.90 ------- .04 ----- Free --- ----- Outfall ------- OR,CU ---- (no --- Q: ------------ RS) 391.95 .04 Free Outfall OR,CU (no Q: RS) 392.00 .04 Free Outfall OR,CU (no Q: RS) 392.05 .04 Free Outfall OR,CU (no Q: RS) 392.10 .04 Free Outfall OR,CU (no Q: RS) - 392.15 .04 Free Outfall OR,CU (no Q: RS) 392.20 .04 Free Outfall OR,CU (no Q: RS) 392.25 .04 Free Outfall OR,CU (no Q: RS) 392.30 .04 Free Outfall OR,CU (no Q: RS) 392.35 .04 Free Outfall OR,CU (no Q: RS) 392.40 .04 Free Outfall OR,CU (no Q: RS) 392.45 .04 Free Outfall OR,CU (no Q: RS) 392.50 .04 Free Outfall OR,CU (no Q: RS) 392.55 .04 Free Outfall OR,CU (no Q: RS) 392.60 .04 Free Outfall OR,CU (no Q: RS) 392.65 .04 Free Outfall OR,CU (no Q: RS) 392.70 .04 Free Outfall OR,CU (no Q: RS) 392.75 .04 Free Outfall OR,CU (no Q: RS) 392.80 .04 Free Outfall OR,CU (no Q: RS) 392.85 .04 Free Outfall OR,CU (no Q: RS) 392.90 .04 Free Outfall OR,CU (no Q: RS) 392.95 .04 Free Outfall OR,CU (no Q: RS) 393.00 .05 Free Outfall OR,CU (no Q: RS) 393.05 .05 Free Outfall OR,CU (no Q: RS) 393.10 .05 Free Outfall OR,CU (no Q: RS) 393.15 .05 Free Outfall OR,CU (no Q: RS) 393.20 .05 Free Outfall OR,CU (no Q: RS) 393.25 .05 Free Outfall OR,CU (no Q: RS) • 393.30 .05 Free Outfall OR,CU (no Q: RS) 393.35 .05 Free Outfall OR,CU (no Q: RS) 393.40 .05 Free Outfall OR,CU (no Q: RS) 393.45 .05 Free Outfall OR,CU (no Q: RS) • 393.50 .05 Free Outfall OR,CU (no Q: RS) 393.55 .05 Free Outfall OR,CU (no Q: RS) • 393.60 .05 Free Outfall OR,CU (no Q: RS) • 393.65 .05 Free Outfall OR,CU (no Q: RS) 393.70 .05 Free Outfall OR,CU (no Q: RS) • 393.75 .05 Free Outfall OR,CU (no Q: RS) • • • • • • ® SIN: 22160372E1C5 PondPack Ver. 9.0029 • • • Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 • S s POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.05 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIOIJAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Elev. Q ft cfs -------- 391.90 ------- .04 391.95 .04 392.00 .04 392.05 .04 392.10 .04 392.15 .04 392.20 .04 392.25 .04 392.30 .04 392.35 .04 392.40 .04 392.45 .04 392.50 .04 392.55 .04 392.60 .04 392.65 .04 392.70 .04 392.75 .04 392.80 .04 392.85 .04 392.90 .04 392.95 .04 393.00 .05 393.05 .05 393.10 .05 393.15 .05 393.20 .05 393.25 .05 393.30 .05 393.35 .05 393.40 .05 393.45 .05 393.50 .05 393.55 .05 393.60 .05 393.65 .05 393.70 .05 393.75 .05 SIN: 22160372E1C5 PondPack Ver. 9.0029 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall .Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2-.POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.06 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q ---------------- Elev. Q ft cfs 393.80 393.85 393.90 393.95 394.00 394.05 394.10 394.15 394.20 394.25 394.30 394.35 394.40 394.45 394.50 394.55 394.60 394.65 394.70 394.75 394.80 394.85 394.90 394.95 395.00 395.05 395.10 395.15 395.20 395.25 395.30 395.35 395.40 395.45 395.50 395.55 395.60 395.65 .05 .05 .05 .05 .05 .05 .05 .05 .05 .05 .05 .05 .05 .06 .06 .06 .06 .06 .06 .06 .06 .06 .06 .06 .06 .47 1.24 2.22 3.39 4.71 6.17 7.75 9.43 9.68 9.71 9.73 9.76 9.78 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) OR,CU (no Q: RS) RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,OR,CU RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 • POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Composite Rating Curve Name.... Outlet 1 Page 5.07 File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW ***** COMPOSITE OUTFLOW SU14MARY **** WS Elev, Total Q ---------------- Elev. Q ft cfs 395.70 395.75 395.80 395.85 395.90 395.95 396.00 396.05 396.10 396.15 396.20 396.25 396.30 396.35 396.40 396.45 396.50 396.55 396.60 396.65 396.70 396.75 396.80 396.85 396.90 396.95 397.00 9.81 9.83 9.86 9.88 9.91 9.93 9.96 9.98 10.01 10.03 10.06 10.08 10.11 10.13 10.16 10.18 10.21 10.23 10.25 10.28 10.30 10.33 10.35 10.37 10.40 10.42 10.45 SIN: 22160372E1C5 PondPack Ver. 9.0029 -------- Converge TW Elev Error ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Notes ------------------------- Contributing Structures RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) RS,CU (no Q: OR) Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.01 Name.... DA 2 Tag: 1 yr Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW Storm... 1-year IDF Tag: 1 yr MODIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN FREQUENCY: ----------------- 1 yr 'C' ---------- Adjustment ----------- = 1.000Allowable ------------------- Q = 12.57 ---------- cfs --------- Hydrograph Storm Duration, Td = .6333 hrs Tc = .0833 hrs Hydrograph File: ................. 1 yr .......... ........... ....... ............ .......... ......... ................. .......... ........... ....... ............ ................... VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' 'C' hrs in/hr acres cfs ac-ft ac-ft ----------------- .619 .619 ---------- .0833 ----------- 5.0968 -------- 9.850 -------- -- 31.32 ---------- .216 --------- .129 .619 .619 .1667 4.2036 9.850 25.84 .356 .226 .619 .619 .2500 3.5000 9.850 21.51 .444 .271 .619 .619 .3333 2.9988 9.850 18.43 .508 .291 .619 .619 .5000 2.3800 9.850 14.63 .604 .301 ***************** ********** *********** ******************* *** Storag e Maximum .619 .619 .6333 2.1453 9.850 13.19 .690 .318 ***************** ********** *********** ******************* ********** ********* .619 .619 .6667 2.0867 9.850 12.82 .707 .317 .619 .619 .8333 1.7933 9.850 11.02 Qpeak < Qallow SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 0 0 0 0 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.02 Name.... DA 2 Tag: 5 yr Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW Storm... 5-year IDF Tag: 5 yr 140DIFIED RATIONAL METHOD ---- Summary for Single Storm Frequency ---- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) RETURN FREQUENCY: 5 yr 'C' Adjustment = 1.000Allowable Q = 16.24 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .5667 hrs Tc = .0833 hrs Hydrograph File: ................ 5 yr .......... ............ ....... ............ .......... ......... ................ .......... ............ ....... ............ ................... VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' 'C' hrs in/hr acres cfs ac-ft ac-ft ---------------- .619 .619 ---------- .0833 ------------ 6.5763 ------- 9.850 --------- -- 40.42 ---------- .278 --------- .166 .619 .619 .1667 5.5441 9.850 34.07 I .469 .302 .619 .619 .2500 4.7400 9.850 29.13 .602 .378 .619 .619 .3333 4.1035 9.850 25.22 .695 .415 .619 .619 .5000 3.2800 9.850 20.16 .833 .441 *****..*******:********************************************* Storage Maximum .619 .619 .5667 3.0764 9.850 18.91 .885 .449 **************************************************************************** .619 .619 .6667 2.7710 9.850 17.03 .938 .435 .619 .619 .8333 2.3795 9.850 14.62 Qpeak < Qallow SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... C and Area Page.6.03 Name.... DA 2 Tag: POST File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2 RATIONAL.PPW RATIONAL C COEFFICIENT DATA ......................................................................... ......................................................................... Area C x Area Soil/Surface Description C acres acres ------------- Impervious ------------------- -------- .9500 ---------- 1.780 ---------- 1.691 Open Space .2200 .810 .178 Lots .4000 4.060 1.624 Pasture - Offsite .2200 .600 .132 Impervious - Offsite .9500 2.600 2.470 WEIGHTED C & ............. ............. TOTAL AREA ---> .................... .................... 6188 ............ ............ 9.850 .............. .............. 6.095 .............. .............. SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.04 Name.... DA 2 Tag: 10 yr Event: 10 yr File.... K:\04\04-020\04028\H&11\PondPack\Rational\DA2_RATIONAL.PPW Storm... 10-year IDF 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 = 17.83 cfs ---------------------------------------------------------------------------- Hydrograph Storm Duration, Td = .5833 hrs Tc = .0633 hrs Hydrograph File: 10 yr ................ .......... ............ ....... ............ ................... VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' 'C' -------- hrs in/hr acres cfs ac-ft ac-ft --------- .619 .619 --------- .0833 ------------ 7.2161 ------- 9.850 --------- -- 44.35 ---------- .305 --------- .183 .619 .619 .1667 6.1343 9.850 37.70 .519 .335 .619 .619 .2500 5.2500 9.850 32.27 .667 .421 .619 .619 .3333 4.6218 9.850 28.41 .783 .475 .619 .619 .5000 3.7100 9.850 22.80 .942 .512 ************************************************•*********** Storage Maximum .619 .619 .5833 3.4306 9.850 21.08 1.016 .525 **************************************************************************** .619 .619 .6667 3.1511 9.850 19.37 1.067 .514 .619 .619 .8333 2.7094 9.850 16.65 Qpeak < Qallow SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 11:12 A14 Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#2- POST-DEVELOPMENT Type.... Mod. Rational Storm Calcs Page 6.05 Name.... DA 2 Tag: 100 yr Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA2_RATIONAL.PPW Storm... 100-year IDF 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 = 24.04 ---------- cfs -------- Hydrograph Storm Duration, Td = .6000 hrs Tc = .0833 hrs Hydrograph File: ................. 100 yr ......... ........... ....... .............. .......... ........ ....... .......... ......... ........... ....... .............. .................. VOLUMES Wtd. Adjusted Duration Intens. Area Qpeak Inflow Storage 'C' hrs in/hr acres cfs ac-ft ac-ft ------- .619 ---------- .619 --------- .0833 ----------- 9.7153 ------- 9.850 ---------- --- 59.71 ---------- .411 -------- .245 .619 .619 .1667 8.4052 9.850 51.66 .712 .463 .619 .619 .2500 7.2400 9.850 44.50 .919 .588 .619 .619 .3333 6.4676 9.850 39.75 1.095 .681 .619 .619 .5000 5.2800 9.850 32.45 I 1.341 .761 ************************************************************ Storage Maximum .619 .619 .6000 4.8010 9.850 29.51 1.463 .784 .619 .619 .619 .619 .6667 4.4816 9.850 27.54 .8333 3.8792 9.850 23.84 1.518 .773 Qpeak < Qallow SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 11:12 AM Date: 12/15/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DAB#3 - POST-DEVELOPMENT Type.... Rational Postdev. Peak Q Page 3.02 Name.... DA 3 Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA3_RATIONAL.PPW Storm... 1-year IDF Tag: Post 1 SUMMARY OF RATIONAL METHOD PEAK DISCHARGES --- PREDEVELOPED CONDITIONS --- Q = CiA * Units Conversion; Where Conversion = 43560 / (12 * 3600) Tag ----- Freq --- -- File ------ ------ IDF Curve ------------ ---- Post 1 - 1 1-year IDF Post 5 5 5-year IDF Post 10 10 10-year IDF Post100 100 100-year ID F Tc = .0833 hrs Tag Freq C C adj ----------- I C ------- I ----------- Area 1 Peak Q (years) factor I final in/hr acres I cfs ----- Post 1 ------ 1 ----- .349 ------ 1.000 I ----------- 1 .349 -------- 5.0968 ---------- I 31.0191 ---------- 55.64 Post 5 5 .349 1.000 1 .349 6.5763 31.0191 71.79 Post 10 10 .349 1.000 1 .349 7.2161 31.0191 78.77 Post100 100 .349 1.000 1 .349 ----------- 9.7153 -------- 31.0191 ---------- 106.05 SIN: 22160372E1C5 PondPack Ver. 9.0029 Withers & Ravenel Time: 1:31 P14 Date: 9/4/2004 APPENDIXA NITROGEN CALCULATIONS Powell Tract at Ten-Ten Rd 8 W&R Project 204028 Stormwater Management Report September 200 I Nitrogen Control Plan Residential Subdivision with no known building footprints Project Title: Powell -Windjam Part I. Riparian Buffers Area includes riparian buffers? [ ] No [ X ] Yes [ ] Exempt If yes, [ ] 50 foot [X] 100 foot River Basin? [ X ] Neuse [ ] Cape Fear Basis for Exemption Show buffers on site plan. Part 11. Nitrogen Calculation a. Subdivision Information Number of lots Number of lots / acre Total area of lots (excluding RM and open space) Average lot size b. Pre-development loading: is (Method 1, Appendix C): 78 1.43 28.18 ac 17900 sf Type of Land Cover Permanently protected undisturbed open space (forest, unmown meadow) Permanently protected managed open space (grass, landscaping, etc.) Impervious Area TOTAL Average house size 5000 sf Amount of Right-of-Way 7.75 ac Percent of Right-of-Way that is impervious area 60.77% Total estimated impervious area 4.71 ac TN Export Area TN export coeff from use (acres) (Ibs/ac/vrl (lbslvrl 54.4 0.6 32.64 0 1.2 0 0 21.2 0 54.4 32.64 Nitrogen Loading Rate (Ibs/ac/yr) = 0.60 c. Post-development loading: Residential Typo of Land Cover Permanently protected undisturbed open space (forest, unmown meadow) Permanently protected managed open space (grass, landscaping, etc.) Right-of-Way (read TN export from Graph 1) Lots (read TN export from Graph 2) TOTAL Nitrogen Loading Rate (Ibs/ac/yr) = 2.61 Proposed BMP(s) Two Wet Ponds Nitrogen Load after BMPs = 1.99 Ibs/ac/yr Nitrogen Load offset by Payments = 0.00 Net change in on-site N Load = 2.01 Part III. Control of Peak Stormwater Fiov Calculated Pre-development Peak Flow: Flow Control Method: 2 Wet Ponds Calculated Post-development Peak Flow: TN Export Area TN export coeff from use (acres) (Ihs/ac/vrl (Ihs/vrl 14.38 0.6 8.63 4.07 1.2 4.89 7.75 10.7 82.97 28.18 1.G 45.38 54.40 141.86 Ibs/ac/yr Estimated Buy Down = $0 Ibs/ac/yr f (for 1 year, design storm)* "See Stormwater Management Plan Report 57.76 cfs 56.19 cfs I, the undersigned, certify to the best of my knowledge that the above information is correct (affix seal). Supply notes & details showing control of Nitrogen and peak stormwater runoff. v Powell - Windjam Nitrogen Loading Calculations I d - Project Name: Powell - Windjam Project #: 204028 TOTAL TRACT Total Area:` ?,36`),664 ?sgft. = 54.40 ac. Right-of-Way Area: 337.590 sqft. = 7.75 ac. Right-of-Way Impervious 205,153 sqft. = 4.71 ac. Natural Open Space Area: 626,393 sgft. = 14.38 ac. Managed Open Space Area: 1760!0 sqft. = 4.06 ac. Residential Lot Area: 1,227,521 sgft. = 28.18 ac. Estimated Pre-Development TN Loading Date: 7/14/2004 Computed by: SAH 61 % Impervious port oe . Type of Land Cover Acres TN EXPORT (Ibs/yr) Ibs/ac/ r Permanently Protected Undisturbed Area 54.40 0.6 32.64 Permanently Protected Managed Area 0.00 1.2 0.00 Totals 54.40 0.6 32.64 Estimated Post-Dovelopment TN Loading Drainage Area 1: Wet Pond Type of Land Cover Acres port Uoett. TN EXPORT (Ibs/yr) Ibs Permanently Protected Undisturbed Area 0.00 0.6 0.00 Permanently Protected Managed Area 1.;'t3 1.2 1.53 Right-of-way 3.20 10.7 34.19 Lots 12.24 1.6 19.71 Totals 16.71 55.43 Estimated BMP Reduction for Riparian Buffer. 25 % Estimated Drainage Area A Nitrogen Loading Reduction: 13.86 Ibs/yr Drainage Area 2: Wet Pond Type of Land Cover Acres xpor ce . TN EXPORT (Ibs/yr) Ibs/ac/ r Permanently Protected Undisturbed Area 0.00 0.6 0.00 Permanently Protected Managed Area 0.9!; 1.2 1.14 Right-of-way 1 10.7 16.17 Lots 4 19 1.6 6.74 LL::_- Totals 6.65 17.31 Estimated BMP Reduction for Riparian Buffer: 25 % Estimated Drainage Area A Nitrogen Loading Reduction: 4.33 Ibs/yr 0 Drainage Area 3A: Ripirfan Buffer Type of Land Cover Acres bp rt oe . TN EXPORT (Ibs/yr) I Permanently Protected Undisturbed Area 0.6 8.63 Permanently Protected Managed Area 1.2 0.68 Right-of-way 0, 0 10.7 8.49 Lots 6.66 1.6 10.73 Totals 22.40 28.52 Estimated BMP Reduction for Riparian Buffer: Estimated Drainage Area A Nitrogen Loading Reduction: 30 % 8.56 lbs/yr Drainage Area 3B: Remaining Area of Tract Type of Land Cover Acres por oe . TN EXPORT (Ibs/yr) Ibs/ac/ r Permanently Protected Undisturbed Area bc? 0.6 0.00 Permanently Protected Managed Area 1.2 1.52 Right-of-way 10.7 24.12 Lots W) _ 1.6 8.20 Totals 8.62 33.84 Estimated BMP Reduction for Riparian Buffer: 0 % Estimated Drainage Area A Nitrogen Loading Reduction: 0.00 lbs/yr Estimated Project Pro-BMP TN Export: 135.10 lbs/yr Estimated Project BMP TN Removal: 26.74 lbs/yr Estimated Project TN Load Rate After BMPs: 1.99 Ibs/actyr Estimated Project Composite Nitrogen Loading Rate Reduction: 19.79 % r? ® POWELL TRACT AT TEN-TEN RD ® PONDPACK OUTPUT FOR DA##3 - POST-DEVELOPMENT ® Job File: K:\04\04-020\04028\H&H\PondPack\Rational\PRE_DA3_RATIONAL.PPW ® Rain Dir: K:\04\04-020\04028\H&H\PondPack\Rational\ ® JOB TITLE ® Project Date: 9/3/2004 ® Project Engineer: Withers and Ravenel Project Title: Powell Tract at Ten-Ten Rd ® Project Comments: ® This report documents post-development peak discharge rates for the drainage area in DA#3 in the Powell Tract. Withers & Ravenel Time: 1:31 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#3 - POST-DEVELOPMENT Table of Contents i Table of Contents ********************** RAINFALL DATA *********************** 1-year IDF...... 5-year IDF...... 10-year IDF..... 100-year IDF.... Pre 1 I-D-F Table 1.01 Pre 5 I-D-F Table ........................ 1.01 Pre 10 I-D-F Table ........................ 1.02 Pre100 I-D-F Table ........................ 1.02 ********************** TC CALCULATIONS ********************* DA 3............ POST Tc Calcs ........................... 2.01 ****************** RATIONAL METHOD CALCS ******************* DA 3............ POST C and Area ......................... 3.01 DA 3............ Rational Predev. Peak Q ............ 3.02 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 1:31 PM Date: 9/4/2004 e POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#3 - POST-DEVELOPMENT Type.... I-D-F Table Page 1.01 Name.... 1-year IDF Tag: Pre 1 Event: 1 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 1-year IDF Tag: Pre 1 Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 5.1000 .1670 4.2000 .2500 3.5000 .3330 3.0000 .5000 2.3800 1.0000 1.5000 2.0000 .8900 3.0000 .6500 6.0000 .3830 12.0000 .2330 24.0000 .1250 Type.... I-D-F Table Page 1.01 Name.... 5-year IDF Tag: Pre 5 Event: 5 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 5-year IDF Tag: Pre 5 Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 .1670 .2500 .3300 .5000 .6670 .8330 1.0000 1.5000 2.0000 3.0000 6.0000 12.0000 24.0000 6.5800 5.5400 4.7400 4.1200 3.2800 2.7700 2.3800 2.1200 1.5200 1.2000 .8900 .5600 .3300 .1900 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 1:31 m4 Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA113 - POST-DEVELOPMENT Type.... I-D-F Table Page 1.02 Name.... 10-year IDF Tag: Pre 10 Event: 10 yr File.... K:\04\04-020\04028\11&H\PondPack\Rational\ Storm... 10-year IDF Tag: Pre 10 Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 .1670 .2500 .3300 .5000 .6670 .8330 1.0000 1.5000 2.0000 3.0000 6.0000 12.0000 24.0000 7.2200 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 Page 1.02 Name.... 100-year IDF Tag: Pre100 Event: 100 yr File.... K:\04\04-020\04028\H&H\PondPack\Rational\ Storm... 100-year IDF Tag: Pre100 Rainfall-Intensity-Duration Curve Time, hrs Intens., in/hr .0830 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 SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 1:31 PM Date: 9/4/2004 ® POWELL TRAC T AT TEN-TEN RD PONDPACK OUTPUT FOR DA##3 - POST-DEVELOPMENT ® ® Type.... Tc Calcs Page 2.01 ® Name.... DA 3 Tag: POST ® File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA3_RATIONAL.PPW ....................................... ................................. ® TIME OF CONCENTRATION CALCULATOR ............................ ................................. ® --------------------------------------- --------------------------------- Segment #1: Tc: User Defined ® ® Segment #1 Time: .0833 hrs --------------------------------------- --------------------------------- Total Tc: .0833 hrs Calculated Tc < Min.Tc: Use Minimum Tc... Use Tc = .0833 hrs ------------------------- ------------------------- ® Type.... Tc Calcs Page 2.01 ® Name.... DA 3 Tag: POST ® File.... K:\04\04-020\04028\H&H\PondPack \Rational\DA3_RATIONAL.PPW ® --------------------------------------- --------------------------------- Tc Equations used.. --------------------------------------- --------------------------------- ® User Defined ® Tc = Value entered by user ® Where: Tc = Time of concentration ® SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 1:31 PM Date: 9/4/2004 POWELL TRACT AT TEN-TEN RD PONDPACK OUTPUT FOR DA#3 - POST-DEVELOPMENT Type.... C and Area Page 3.01 Name.... DA 3 Tag: POST File.... K:\04\04-020\04028\H&H\PondPack\Rational\DA3 RATIONAL.PPW RATIONAL C COEFFICIENT DATA ......................................................................... ......................................................................... Area C x Area Soil/Surface Description - C acres acres -------------- ----------------- Open Space -------- .2200 ---------- 1.822 ---------- .401 Woods .2000 14.371 2.874 Impervious .9500 2.946 2.799 Lots .4000 11.880 4.752 WEIGHTED C & TOTAL AREA ---> ................................. ................................. .3490 ............ ............ 31.019 .............. .............. 10.826 .............. .............. SIN: 22160372E1C5 Withers & Ravenel PondPack Ver. 9.0029 Time: 1:31 PM Date: 9/4/2004 Robert J. Goldstein & Associates, Inc. ENVIRONMENTAL CONSULTANTS 8480 Garvey Drive, Raleigh NC 27616 tel: (919) 872-1174 fax: (919) 872-9214 email: rgoldstein@RJGAcarolina.com TO 91?ja ?Go(h?n t 6;6?z -37E 4M ? Approved as submitted ? Approved as noted ? Returned for corrections > WE ARE SENDING YOU Attached ? Under separate cover via the following items:' ? Shop drawings ? Prints ? Plans r ? Samples ? Specifications ? Copy of letter ? Change order O• DESCRIPTION D 200 S Tt s 1_21W e4 DE 1t.v TV QUAL AND ST0110p itnxil 'C Lzao DWI THESE ARE TRANSMITTED as checked below: ? For approval ? For your use > . ? As requested ? For review and comment ? FOR BIDS DUE REMARKS ILIET SEEM (OF URRAM? ? l?` L DATE A O JOB HO.? ATTENTI0,'i rj ue z?Z616 -t 611-1 Qz' ? Resubmit copies for approval ? Submit copies for distribution ? Return corrected prints 19 ? PRINTS RETURNED AFTER LOAN TO US SIGNED: Mox,twr ncns c,o rR s ,, If enclosures are not as noted, kindly notify us at once. LVI COPY TO ?A J A HCfR North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor William G. Ross, Jr., Secretary Alan W. Klimek, P.E., Director November 30, 2004 CERTIFIED MAIL: RETURN RECEIPT REQUESTED Mr. John Powell C/o Withers & Ravenel Attn: Mr. Brad Hart 111 MacKenan Drive Cary, NC 27511 Subject Property: Powell Tract at 1010 Road REQUEST FOR MORE INFORMATION DWQ Project # 04-1626 Wake County D DEC l 7 2004 IIETLANDHSM STS Q JAR BRANCH On November 15, 2004, the Division of Water Quality (DWQ) received the additional information requested. This request was to process your application dated September 28, 2004 to impact: 75 linear feet of stream; 0.26 acres of Neuse buffers; and 0.304 acres of N?etlands for the proposed commercial development. The DWQ has determined that the additional information was incomplete and/or provided inaccurate information as discussed below. The DWQ will require additional information in order to process your application to impact protected wetlands, buffers and/or streams on the subject property. Therefore, unless we receive the additional information requested below, we will have to move toward denial of your application as required by 15A NCAC 2H.0506 and will place this project on hold as incomplete until we receive this additional information. Please provide the following information so that we may continue to review your project. • The orifice for Wet Detention Pond Number 1 is too large for a drawdown period of 2 to 5 days. DWQ recommends an orifice of 2.25 inches diameter. • The orifice for Wet Detention Pond Number 2 is too large for a drawdown period of 2 to 5 days. DWQ recommends an orifice of 1.4 inches diameter. • Please re-design the location of the inlet or outlet of the Wet Detention Basin No. 2 to eliminate potential short-circuiting. Please respond within three weeks of the date of this letter by sending five (5) copies this information in writing. This letter only addresses the PCN Application review and does not authorize any impacts to wetlands, streams, or buffers. Please call Cynthia Van Der Wiele, Ph.D. at 919-715-3473 if you have any questions regarding this issue. Sincerely, Cyndi Karoly, CB K/cvdw DWQ, Wetlands/ 401 Unit cc: DWQ Raleigh Regional Office USACE Raleigh Regulatory Field Office File Copy Central Files Sean Peffer, Robert Goldstein & Assoc., Inc., 8480 Garvey Dr., Raleigh, NC 27604 401 Wetlands Certification Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 One 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 North Carofina Phone: 919.733-1786 /FAX 919.733-6893 /Internet: http://h2o.enr.state.nc us/ncwetlands An Equal Opportunity/Affirmative Action Employer -50% Recycled/10% Post Consumer Paper ;Vatimally A V-O-YVA '?r- M MC ? L':? U V R North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor November 30, 2004 CERTIFIED MAIL: RETURN RECEIPT REQUESTED Mr. John Powell c/o Withers & Ravenel Attn: Mr. Brad Hart 111 MacKenan Drive Cary, NC 27511 Subject Property: Powell Tract at 1010 Road REQUEST FOR MORE INFORMATION William G. Ross, Jr., Secretary Alan W. Klimek, P.E., Director DWQ Project # 04-1626 Wake County On November 15, 2004, the Division of Water Quality (DWQ) received the additional information requested. This request was to process your application dated'September 28, 2004 to impact: 75 linear feet of stream; 0.26 acres of Neuse buffers; and 0.304 acres of Jetlands for the proposed commercial development. The DWQ has determined that the additional info7ation was incomplete and/or provided inaccurate information as discussed below. The DWQ will require additional information in order to process your application to impact protected wetlands, buffers and/or streams on the subject property. Therefore, unless we receive the additional information requested below, we will have to move toward denial of your application as required by 15A NCAC 211.0506 and will place this project on hold as incomplete until we receive this additional information. Please provide the following information so that we may continue to review your project. • The orifice for Wet Detention Pond Number 1 is too large for a drawdown period of 2 to 5 days. DWQ recommends an orifice of 2.25 inches diameter. • The orifice for Wet Detention Pond Number 2 is too large for a drawdown period of 2 to 5 days. DWQ recommends an orifice of 1.4 inches diameter. • Please re-design the location of the inlet or outlet of the Wet Detention Basin No. 2 to eliminate potential short-circuiting. Please respond within three weeks of the date of this letter by sending five (5) copies this information in writing. This letter only addresses the PCN Application review and does not authorize any impacts to wetlands, streams, or buffers. Please call Cynthia Van Der Wiele, Ph.D. at 919-715-3473 if you have any questions regarding this issue. Sincerely, Cyndi Karoly, DWQ, Wetlands / 401 Unit CBK/cvdw cc: DWQ Raleigh Regional Office USACE Raleigh Regulatory Field Office File Copy Central Files Sean Peffer, Robert Goldstein & Assoc., Inc., 8480 Garvey Dr., Raleigh, NC 27604 401 Wetlands Certification Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 One 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NorthCarolina Phone: 919-733-1786/FAX 919.733-6893/Internet:http://h2o.enr.state.nc.us/ncwetiands vVatim llty An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper L/ Project Name: Powell Tract @ 1010 Project No. DW Q 04-1626 Pond 1 SUBMITTED DESIGN. REQUIRED DESIGN: elevations 2.7 average depth status Bottom of Basin (ft) 396 Permanent Pool (ft) 400 4 ft. depth ok Temporary Pool (ft) 404.5 4.5 ft. depth ok areas Permanent Pool SA (sq ft) 16442 13488 sq. ft. ok Drainage Area (ac) 21.81 13488, based on avg depth ok Impervious Area (ac) 8.66 39.7 % - volumes Permanent Pool (cu ft) 44866 Temporary Pool (cu ft) 35981 32251 cu. ft. ok Forebay (cu ft) 10411 23.2 % check forebc other parameters SA/DA 14 1.42 Mad- - Orifice Diameter (in) 3 0.35-cfs-dra,,,vdowrL- Z Design n Rainfall (in) ' 1.2 day drawdown check drativa Linear Interpolation of Correct SAIDA "* 4 ft. Permanent Pool Depth ,o m pervious SA/DA fron (Avg. Depth) Next Lowest 30 1.08 1.08 1.03 Project Impervious 39.7 1.42 1.42 1.42 Next Highest 40 1.43 1.43 1.43 3 ft 4 Project Name: Powell Tract @ 1010 Project No. DWQ 04-1626 Pond 2 SUBMITTED DESIGN: REQUIRED DESIGN: elevations 1.8' average depth Bottom of Basin (ft) 386 Permanent Pool (ft) 390 4 ft. depth Temporary Pool (ft) 395 5 ft. depth areas Permanent Pool SA (sq ft) 6589.5 Drainage Area (ac) 9.85 Impervious Area (ac) 4.14 volumes Permanent Pool (cu ft) 11892 Temporary Pool (cu ft) 14462 Forebay (cu ft) 3180 6397 sq. ft. 8110 based on avg depth 42.0y % 15313 cu. ft. 26.7 % status ok ok ok check surfac check tempo clheck forebc other parameters SA/DA 1.5 u/ ' - Orifice Diameter (in) ' 0.17 cfs d - Design Rainfall (in) 1 1.0 day drawdown check drawn Linear Interpolation of Correct SAIDA*** 4 ft. Permanent Pool Depth clo Impervious SA/DA iron (Avg. Depth) Next Lowest 40 1.43 1.848358753 1.08 Project Impervious 42.0 1.49 1.90 1.15 Next Highest 50 1.73 2.088593216 1.13 3 ft 4 Project No. DWQ D ? - l u z?_Q (to be provided by DWQ) DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET DWQ Stormwater Management Plan Review: 1. PROJECT INFORMATION (please complete the following information): Project Name : e. ? -vy- MCA- -VE- (611146'k S-63, Contact Person: ?nro A U a. ?. f Phone Number. MXO( ) ?{ u ct -'3x-10 For projects with multiple basins, specify which basin this worksheet applies to: 1? A :vy 1 Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation 3°? t-o ft. y oo ft. -I C-3 %_ k . S ft. (average elevation of the floor of the basin) (elevation of the orifice invert out) (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Permanent Pool Volume Temporary Pool Volume Forebay Volume SAIDA used Diameter of Orifice _Ila I- LkLk 2 sq. ft. 21.Ss1 ac. K. (An ac. 'gukv cu. ft. y 3 5 t a1g.?_ cu. ft. y 1 cu. ft. ?.L{2 3 in (water surface area at permanent pool elevation) (on-site and off-site drainage to the basin) (on-site and off-site drainage to the basin) (combined volume of main basin and forebay) (volume detained on top of the permanent pool) (surface area to drainage area ratio) (draw down orifice diameter) II. REQUIRED ITEMS CHECKLIST /-LcZI .Z,ZS it The following checklist outlines design requirements per the Stormwater Best Management Practices Manual. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch storm event. The basin length to width ratio is greater than 3:1. The basin side slopes are no steeper than 3:1. A submerged and vegetated perimeter shelf at less than 6:1 is provided. Vegetation to the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The temporary pool draws down in 2 to 5 days. The forebay volume is approximately equal to 20% of the total basin volume. Sediment storage is provided in the permanent pool. Access is provided for maintenance. A notarized site specific operation and maintenance (0&M) plan is provided. A vegetation management/mowing schedule is provided in the 0&M plan. Semi-annual inspections are specified in the 0&M plan. A debris check is specified in the 0&M plan to be performed after every storm event. A specific sediment clean-out benchmark is listed (elevation or depth) in 0&M plan. A responsible party is designated in the 0&M plan. Project No. DWQ n? - Itp Zla (to be provided by DWQ) DIVISION OF WATER QUALITY - 401 WET DETENTION BASIN WORKSHEET DWQ Stormwater Management Plan Review: 1. PROJECT INFORMATION (please complete the following information : Project Name: 2a _\\ T,r?c ?} Try ?j" (6r0Lg6v,Jk SUbd) Contact Person: BcAA )A,?rPt? Phone Number: Aig) 14 o For projects with multiple basins, specify which basin this worksheet applies to: _?-?,oL 27 Basin Bottom Elevation 3Slfl ft. (average elevation of the floor of the basin) Permanent Pool Elevation 3q o ft. (elevation of the orifice invert out) Temporary Pool Elevation -9 °) S ft. (elevation of the outlet structure invert in) Permanent Pool Surface Area Drainage Area Impervious Area Permanent Pool Volume Temporary Pool Volume Forebay Volume SA/DA used Diameter of Orifice (e? 5?9 - S sq. ft. (water surface area at permanent pool elevation) ?t . F<S ac. (on-site and off-site drainage to the basin) . I L4 ac. (on-site and off-site drainage to the basin) $?12 cu. ft. (combined volume of main basin and forebay) 1. Ll _ Lv -Z cu. ft. (volume detained on top of the permanent pool) ?> C -cu. ft. L . So (surface area to drainage area ratio) y in. (draw down orifice diameter) /, `7 . II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and approval of the project The temporary pool controls runoff from the 1 inch storm event. _The basin length to width ratio is greater than 3:1. _The basin side slopes are no steeper than 3:1. A submerged and vegetated perimeter shelf at less than 6:1 is provided. .Vegetation to the permanent pool elevation is specified. An emergency drain is provided to drain the basin. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The temporary pool draws down in 2 to 5 days. The forebay volume is approximately equal to 20% of the total basin volume. Sediment storage is provided in the permanent pool. Access is provided for maintenance. ,A notarized site specific operation and maintenance (0&M) plan is provided. A vegetation management/mowing schedule is provided in the 0&M plan. Semi-annual inspections are specified in the 0&M plan. A debris check is specified in the 0&M plan to be performed after every storm event. A specific sediment clean-out benchmark is listed (elevation or depth) in 0&M plan. A responsible party is designated in the 0&M plan. Robert J. Goldstein & Associates, Inc. ENVIRONMENTAL CONSULTANTS 8480 Garvey Drive, Raleigh NC 27616 tel: (919) 872-1174 fax: (919) 872-9214 email: rgoldstein@RJGAcarolina.com TO M 5 _("" I/ k I/ c) S ` Ra, k > WE ARE SENDING YOU Attached ? Under separate cover via_ ? Shop drawings ? Prints Mans ? Copy of letter ? Change order ? DATE JOB NO. ATTENTION RE 7 o- the following items: ? Samples ? Specifications COPIES DATE NO. DESCRIPTION S A , Q 6 + <1 1A JAA s D N DENR -WATER QUALITY ' THESE ARE TRANSMITTED as checked below: ? For approval ? For your use > ? As requested ? For review and comment ? FOR BIDS DUE REMARKS \ v^tv?a ? Approved as submitted ? Approved as noted ? Returned for correctior 19 ? Resubmit copies for approval ? Submit copies for distribution ? Return corrected prints ? PRINTS RETURNED AFTER LOAN TO US -,/-/ Iii __? r . l_ "X i ,1 - j A --2 -L \ COPY TO ?/lI SIGNED: MAb T2407 N IR If enclosures are not as noted, kindly notify us at once. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT Wet Pond 01 - The Powell Tract at 1010 Road (DWQ Project 004-1626) Cary, NC The wet detention basin system is defined as the wet detention basin, pretreatment including the constructed forebays and the vegetated filter if one is provided. Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice 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 wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see 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 wet 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 permanent pool depth reads 3.0 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM V Permanent Pool Elevation 400.0 Sediment moval El. 397.i4N -------------Sediment Re moval Elevation 397.0 ----- -75% Bottom E vation 396.0 ------------------------------------------- 0 FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. L5 L? iJ V L:_; ??f i t? L:l NOV 1 5 ?.004 Page 1 of 2 DENR - W TF.R QUALITY WE WDS AND STORthyATER BRANCH 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 wet 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: e,4eelA?> Title: Address: ,2oi rr??.a c?xs ems • -re4r7a' j22/ .Q.>?cs'43s? .•i? . .x ?? o? Phone: L? ,yag Sig Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. . I, , S c o T --T 7.") c S , a Notary Public for the State of A CQT" LA[Lc +W - , County of W A-kC , do hereby certify that ikQce M, wRnrTG1) personally appeared before me this 10 day of ilJouz--s E2 0 LA , and acknowledge the due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, OFFICIAL SEAL Notary Public, North Ca a County of Wake L Scott Jones My Commission Expires Dec. 29, 21307 SEAL My commission expires 0 EC. z'l , Zo o Page 2 of 2 WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT Wet Pond #2 - The Powell Tract at 1010 Road (DWQ Project #04-1626) Cary, NC The wet detention basin system is defined as the wet detention basin, pretreatment including any constructed forebays and the vegetated filter if one is provided. Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice 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 wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see 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 wet 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 permanent pool depth reads 3.0 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM Permanent Pool Elevation 390.0 Sediment moval El. 387.0175010 /o ------vation ----- 386-.0 -- ? -Sediment Removal Elevation 387.0 ---- -75% ----------------------------------------- © ------ Bottom E , FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. Page 1 of 2 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 wet 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. 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: ddgMr W. AA4r ./ Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. 1, L., ScaTT -S-Q/V?5 , a Notary Public for the State of No,'ZIM CAlLo .„yA County of wA-1=i--- , do hereby certify that 3a u r-G AA, w k a T TE N personally appeared before me this 10 day of Neu i•t6 , 7O a'i f and acknowledge the due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, OFFICIAL SEAL Notary Public. North Carolina County of Wake L. Scott Jones emy Cpmmisslon Expires Dec. 29, 2GO7 SEAL My commission expires 0 Gc . 2`j , Zo0:7 Page 2 of 2 Title: ?;,.?? .c • t?,.!? ,a?u?srna..? se- Address: ?r _i?ai ?Y>it/?tcts'` ?rrf_?rrr?a ??? ??,o? North Carolina Department of Environment and Natural Division of Water Quality Michael F. Easley, Governor October 26, 2004 CERTIFIED MAIL: RETURN RECEIPT REQUESTED Mr. John Powell c/o Withers & Ravenel Attn: Mr. Brad Hart 111 MacKenan Drive Cary, NC 27511 Subject Property: Powell Tract at 1010 Road REQUEST FOR MORE INFORMATION Resources William G. Ross, Jr., Secretary Alan W. Klimek, P.E., Director DWQ Project # 04-1626 Wake County On October 7, 2004, the Division of Water Quality (DWQ) received your application dated September 28, 2004 to impact: 75 linear feet of stream; 0.26 acres of Neuse buffers; and 0.304 acres of wetlands for the proposed commercial development. The DWQ has determined hat your application was incomplete and/or provided inaccurate information as discussed below. The DWQ will require additional information in order to process your application to impact protected wetlands, buffers and/or streams on the subject property. Therefore, unless we receive the additional information requested below, we will have to move toward denial of your application as required by 15A NCAC 2H.0506 and will place this project on hold as incomplete until we receive this additional information. Please provide the following information so that we may continue to review your project. Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). The following items were not included: ¦ Signed and notarized Operation and Maintenance Agreement for the stormwater facilities. ¦ Completed worksheet for each stormwater management facility. BMP worksheets and sample Operations and Maintenance Agreements can be found on the 401 Oversite/Express Review Website (http://h2o.enr.state.nc.us/ncwetlands/mitresto.htnil). Please respond within three weeks of the date of this letter by sending five (5) copies this information in writing. This letter only addresses the PCN Application review and does not authorize any impacts to wetlands, streams, or buffers. Please call Cynthia Van Der Wiele at 919-715-3473 if you have any questions regarding this issue. Sincerely, Cyndi Karoly, DWQ, Wetlands / 401 Unit CBK/cvdtiv cc: DWQ Raleigh Regional Office USACE Raleigh Regulatory Field Office File Copy Central Files Sean Peffer, Robert Goldstein & Assoc., Inc., 8480 Garvey Dr., Raleigh, NC 27604 401 Wetlands Certification Unit 1650 Mail Service Center, Raleigh, North Carolina 27699.1650 One 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NorthCarolina Phone: 919.733.1786 / FAX 919-733.6893 / Internet: http://h2o.enr.state.nc.us/ncwetlands An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10°b Post Consumer Paper .1 oG? rPaldalei?ia?u?i?aaacialca; ?sw. 64 ENVIRONMENTAL CONSULTANTS 8480 Garvey Drive Since 1985 Tel:(919)872-1174 or (800)407-0889 Raleigh, North Carolina 27616-3175 Fax:(919)872-9214 e-mail: rgoldstein(a?ri4aCarolina com website: www ri4aCarolina.com September 28, 2004 US Anny Corps of Engineers NCDENR-DWQ Attn: Ms. Jennifer Burdette Attn: Mr. John Dorney 6508 Falls of the Neuse Rd., Ste. 120 2321 Crabtree Blvd Raleigh, NC 27615 Parkview Building Raleigh, NC 27604 ,, ?0 RE: Nationwide Permit 39, 401 Certification & Neuse River Buffer Compliance Powell Tract at 1010 Road RP,@M_ o Vq Cary, Wake County, North Carolina RJG&A Project #2445 O C T 0 7 2004 Dear Ms. Burdette and Mr. Dorney: DENR - WATER QUALITY WETLANDS AND STORMWATER BRAUCH On behalf of Mr. John Powell (property owner) and Withers & Ravenel, Inc. (project engineer), we are requesting authorization from the US Anny Corps of Engineers (USACE) to use Nationwide Permit 39 for proposed permanent impacts to two streams and permanent and temporary impacts to jurisdictional wetlands. Impacts to streams on-site will result from the installation of rip-rap dissipator pad associated with a residential road and two utility crossings. Floodplain and headwater wetlands will be impacted by a residential road, a greenway trail, a utility crossing, and a stormwater detention pond. In addition, we request written concurrence from the North Carolina Division of Water Quality (NCDWQ) that the project complies with the Neuse Buffer Rules and the 401 Water Quality Certifications associated with NWP 39. A Pre- construction Notification Application (PCN) is attached, which includes an agent authorization letter. _ The subject property is located approximately four miles east of the Town of Apex between Kildare Farm Road (SR 1300) and Holly Springs Road (SR 1152). The site is bounded by Ten- Ten Road (SR 1010) to the south and residential subdivisions to the north, east, and west. The site is located in the Town of Cary's extraterritorial jurisdiction (ETJ). Please refer to the ' -_ attached map (Figure 1) for the project's location on a USGS topographic quadrangle. The purpose of this project is to construct a residential subdivision that will meet the demand for housing in this area. Proposed impacts associated Nvith the proposed subdivision development will include 75 linear feet of stream channel and 0.26 acres of Neuse River Buffers (Zone 1: 5,710 sq. ft; Zone 2: 5,728 sq. ft) associated with the channels. Permanent wetland impacts will total 0.304 acres and temporary impacts Nvill total 0.095 acres. Environmental Assessments •Environmental Impact Statements *Jurisdictional Wetland Delineations *Endangered Species Surveys GIS/GPS Mapping *Reservoirs •Archaeological Surveys and Testing •Water Supply Projects *Real Estate Risk Assessments *Lake Management Watershed Management • Instream Flow Analyses • Mitigation Plans • Stream Restoration • Municipal Solid Waste Landfills • Sewerlines Wastewater Treatment Plants • 404 and 401 Permits • Groundwater Monitoring • Biological Assessments • Expert Witness Testimony September 29, 2004 RJG&A Proicct I#: 2445 Page 2 of 3 No previously issued permits are known to exist for the site. RJG&A personnel conducted a wetland delineation and Neuse buffer evaluation of the subject property on June 3, 4, and 7, 2004. The applicant has provided a surveyed wetland delineation map for submittal to the ACOE, but as of the writing of this application, the jurisdictional determination has not been submitted for approval. Copies of the wetland delineation data forms completed on-site are attached. On July 7, 2002, RJG&A personnel met with Mr. Michael Horan of the NC-DWQ for a Neuse River Buffer determination. A copy of Mr. Horan's letter is attached (NBRRO 904-215). Both stream features impacted by the proposed development activities are subject to the buffer rules. In addition, these two streams are subject to the Town of Cary's Storinwater Management Plan for Nitrogen Control (DS00-179A), which require 100-foot buffers on all streams and ponds depicted on the most recent printed version of the USGS map. Buffer Compliance The applicant proposes a roadway crossing and utility crossing along an intermittent stream, labeled as Impact Areas 1 and 2 on the attached impact maps, respectively. The roadway crossing will impact 5,835 square feet (0.134 acres) of riparian buffers. The utility crossing will impact 3,105 square feet (0.071 acres) of riparian buffers. Another utility crossing, depicted as Impact Area 4, will cross Dutchmans Branch. This line will impact 2,498 square feet (0.057 acres) of riparian buffers. To minimize impacts to the stream channels, the utility lines will cross at perpendicular angles. Erosion and siltation control fences will be used during excavation and installation of the lines. Nationwide Permit 39 & 401 Certification Three stream impacts, totaling 75 linear feet, will result from proposed development activities. One intermittent stream will be impacted in two separate locations (Impact Areas 1 and 2). Stream Impact E, resulting from the installation of a rip-rap dissipator apron, will impact 25 linear feet of channel. This dissipator is associated with a culverted residential road. Stream Impact B, resulting from the installation of forced main sewer line, will impact 30 linear feet of stream channel. The third stream impact, labeled Stream Impact O, will result from a force main sewer line and will total 20 linear feet. The applicant will employ appropriate erosion and siltation control devices during construction and will cross the channels at a perpendicular angle. Jurisdictional wetland impacts on-site will total 0.399 acres, with permanent impacts totaling 0.304 acres and temporary impacts totaling 0.095 acres. The temporary impacts will result form the aforementioned force main sewer lines. A residential road will impact 0.075 acres of headwater wetland (Wetland Impact A). A paved greenway trail will impact 0.147 acres of floodplain wetlands (Wetland Impacts H and 1). This trail will be approximately 10 feet wide with four to five foot gravel shoulders on each side. The f September 29, 2004 R.IG&A Project it: 2445 Page 3 of 3 remaining wetland impacts, totaling 0.082 acres, will occur because of the construction of a stormwater management pond. The USACE's current policy requires applicants to avoid and minimize wetland and stream channel impacts to the maximum extent practicable and may require compensatory mitigation 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. Impacts on-site have been minimized by keeping building footprints and impervious surfaces out of wetlands and riparian buffers to the extent practical. Typically, impacts to intermittent stream channels do not require mitigation, therefore, we do not believe mitigation should be required by the USACE for this project. If for some reason mitigation is required, the client proposes payment to the NC-WRP. NC-DWQ's current policy requires mitigation for impacts of greater then 150 linear feet per project for streams that exhibit "significant aquatic function". There are only 75 linear feet of proposed stream impacts and less than one acre of wetland impacts, therefore, mitigation is not proposed. DWQ also requires riparian buffer mitigation for stream crossings resulting in greater than one-third of an acre of impacts per crossing. Because each proposed crossing results in less than one-third of an acre of buffer impacts, no buffer mitigation is proposed. This project will comply with the general and regional conditions of NWP 39. We hope the information provided with this submittal is adequate. Please do not hesitate to contact our office if you have questions or need additional information. Sincerely, Sean Peffer Environmental Scientist Attachments: Pre-construction (PCN) notification form Site Location Map-USGS (Figure 1) Site Location Map - Soil Survey (Figure 2) Proposed Wetland Impact Maps (Sheets 1-4) Portions of Stormwater Management Plan Agent Authorization Letter NC-DWQ Neuse Buffer Letter Wetland Data Forms Office Use Only: Form Version May 2002 USACE Action ID No. DWQ No. (If any particular item is not appticaoic to tins project, picase enter iNot Appiicanie or ..iviti .) 1. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ® Riparian or Watershed Buffer Rules ? Section 10 Permit ? Isolated Wetland Permit from DWQ ® 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 39 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete section VIII and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: Mr. John Powell c/o Withers & Ravenel Mailing Address: Attn: Mr. Brad Hart 111 MacKenan Drive Cary, NC 27511 Telephone Number: (919) 469-3340 Fax Number: (919) 467-6008 E-mail Address: Not Available 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Mr. Sean Peffer Company Affiliation: Robert J. Goldstein & Associates, Inc. Mailing Address: 8480 Garvey Drive Raleigh, NC 27604 Telephone Number: (919)872-1174 Fax number: (919)872-9214 E-mail Address: sneffernrjgacarolina.com III. Project Information Pale I of9 Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full- size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Powell Tract at 1010 Road 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): Tract 1 (24-ac) 076-140-7899 Tract 2 (30-ac) 076-151-2650 4. Location County: Wake Nearest Town: Cary Subdivision name (include phase/lot number): Not available at this time Directions to site (include road numbers, landmarks, etc.): The site property is located approximately four miles east of the Town of Apex between Kildare Farm Road (SR 1300) and Holly_ Springs Road (SR 1152). The site is bounded by Ten-Ten Road (SR 1010) to the south and residential subdivisions to the north, east, and west. The site is located in the Town of Cary's ETJ. 5. Site coordinates, if available (UTM or Lat/Long): Entrance to property from 1010 Road: 35.70072N / 78.78164W (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Property size (acres): ± 54 Acres 7. Nearest body of water (stream/river/sound/ocean/lake): Dutchmans Branch 8. River Basin: Neuse (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://112o.enr.state.nc.us/adniin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The site is an undeveloped, wooded tract with areas of fallow agricultural land. 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project is a single-family residential subdivision with the tvnical utilities (i.e.. sewer water, electric, etc.) One intermittent, unimportant stream will be impacted by a residential road crossing and a sewer line, each in a separate location. Dutchmans Creek a perennial stream will be impacted by a sewer line crossing. Floodplain wetlands will be impacted by a sewer line greenway trail, and stormwater retention pond. Typical excavating and grading equipment will be used during Page 2 of 9 construction activities Stream channel impacts will total 75 linear feet and 0.26 acres of Neuse River Buffers (Zone 1. 5,710 sq ft; Zone 2. 5,728 sq. ft). Permanent wetland impact will total 0.3 acres and temporary impacts will total 0 1 acres. 11. Explain the purpose of the proposed work: This project will provide single family residential housing for a growing are in Wake County. Residential subdivision currently abut the project site to the east west, and north. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. No previously issued permits are known to exist for the site. RJG&A personnel conducted a wetland delineation and Neuse buffer evaluation of the subject property on June 3, 4, and 7, 2004. The applicant has provided a surveyed wetland delineation may for submittal to the ACOE, but as of the writing of this application the jurisdictional determination has not been submitted for approval. Copies of the wetland delineation data forms completed on-site are attached. On July 7, 2002, RJG& A personnel met with Mr. Michael Horan of the NC-DWQ for a Neuse River Buffer determination. A copy of Mr. Horan's letter is attached (NBRRO #04-215). Both stream features impacted by the proposed development activities are subject to the buffer rules. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No future impacts are expected at this time. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. Provide a written description of the proposed impacts: An intermittent, unimportant stream will be impacted in two locations as a result of a residential road (25 l.f.) and a sewer utility line (30 l.f.). A perennial stream will also be impacted by a sewer line crossing (20 l.f.). A total of 0.304 acres of headwater and floodplain wetlands will be permanently impacted by the construction of a greenway trail and stormwater retention basin. A total of 0.095 acres if headwater and floodplain wetlands will be temporarily impacted by the installation of a sewer line Neuse River buffer impacts Page 3 of 9 will also be associated with the stream crossings These crossings will result in 0.131 acres of impacts to Zone 1 and 0.132 acres of impacts to Zone 2. 2. Individually list wetland impacts below: Wetland Impact Area of Located within Distance to Site Number Type of 100-year Nearest Type of Wetland*** (indicate on Impact acres) (acres) Floodplain** Stream (linear ma) (yes/no) feet) Wetland Impact Grading/fill 0.075 No Adjacent Headwater A (Road) Wetland Impact Grading/fill 0.068 No Adjacent Headwater H (Greenway Wetland Impact Grading/fill 0.079 No Adjacent Floodplain I (Greenway Wetland Impact Fill/excavation (Stormwater 0.082 No Adjacent Floodplain J Pond) Wetland Impact Temporary 0.009 No Adjacent Floodplain K Wetland Impact Temporary 0.024 No Adjacent Floodplain N Wetland Impact Temporary 0.062 No Adjacent T Floodplain P * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http:/hvww.fema.gov. ***List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: ± l acre Total area of wetland impact proposed: Permanent: 0.3 acres; Temporary: 0.1 acres 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Length of Average Perennial or Site Number Type of Impact Stream Name** Width of Intermittent? (indicate on map) Impact* (linear Stream Before (please specify) feet) Impact Stream Impact B Permanent 30 UT Dutchmans 3 feet Intermittent Branch Stream Impact E Permanent 25 UT Dutchmans 3 feet Intermittent Branch Fstream Impact O Temporary 20 Dutchmans Branch 8 feet Perennial Page 4 of 9 * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.usys.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 75 linear feet 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact * Area of Name of Waterbody Type of Waterbody Site Number Type of Impact Impact (if applicable) (lake, pond, estuary, (acres) sound, bay, ocean, etc.) (indicate on map) NA List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Size of watershed draining to pond: NA Expected pond surface area: NA VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The applicant requested a wetland delineation on-site prior to site plan development in order to determine the extent and location of wetlands and streams. Although iurisdictional areas were avoided to the maximum extent practical, one unnamed tributaries to Dutchmans Branch and Dutchmans Branch flow through the property. The UT bisects the property making it necessary to construct a road crossing over the feature. This UT is not a continuous stream and the only channel impacts will result from the installation of a rip-rap dissapator pad. This UT will also be impacted by a 25' utility crossing Impacts to Dutchmans Branch will result from a 20'wide sewer easement. These utility crossings are necessary in order to provide sanitary sewer service to the subdivision. The applicant plans to cross both channels at a Page 5 of 9 perpendicular angle in order to minimize impact to the streams and riparian buffer. Wetlands will be impact as a result of the afore mentioned street. Jurisdictional wetlands will also be temporarily impacted by the utility lines. In an effort to efficiently treat stormwater on-site, it will be necessary to construct two stormwater retention ponds. One of these ponds will impact a small amount of floodplain wetland. This impact will be necessary in order to place the pond in the most efficient area for collecting runoff. A geenway trail will also be constructed along the northern portion of the site property. This trail will be a ten foot wide paved footpath with four to five feet of gavel shoulder on each side. In order to maintain aesthetic appeal along the trails corridor, the applicant has chosen to place the trail within the floodplain. Placement of the trail in this area will minimally impact floodplain wetlands. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as strearns; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://li2o.enr.state.nc.us/newctlands/strmr*_ide.litml. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sliect if more space is needed. The jurisdictional areas have been avoided to the maximum extent practicable. Impacts to streams on-site were minimized by using a rip-rap dissapator (Stream Impact E) and by placing utility lines below the channel bottom (Impacts B and O). The utility crossings will cross the channels at pemendicular angles. Typically, reasonable impacts to streams do not require mitigation We do not believe mitigation should be required. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP Page 6 of 9 website at http://li2o.eiir.state.ilc.iis/wrp/iiidex.litm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): NA Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ? No If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No ? If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ® No E] If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Residential Street Impact (Impact Area 1) Zone* Impact (square feet) Multiplier Required Mitigation 1 2,317 3 NA 2 3,518 1.5 NA Total 5,835 NA Page 7 of 9 Utility Crossing (Impact Area 2 Zone* Impact (square feet) Multiplier Required Mitigation 1 1,890 3 NA 2 1,215 1.5 NA Total 3,105 NA Utility Crossing (Impact Area 4) Zone* Impact (square feet Multiplier Required Mitigation 1 1,521 3 NA 2 977 1.5 NA Total 2,498 NA *Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 213 .0242 or .0260. Imnacts to rinarian buffers are less than 1/3 of an acre per impact area. We do not believe buffer mitigation should be required. XI. Storinwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Impervious acreage will be less than 30% (25.4%). Ducthmans Creek, which flows through the northern portion of the site, is classified as a WS-11I, NSW by the NCDWQ. In order to obtain reduction of 85% TSS, the applicant has designed two stormwater retention ponds on the site. Overland flow on-site will be dissipated before entering into the buffers. A stormwater plan and calculations is attached for reference. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Sewage will leave the site via force main as part of the county's sanitary sewer system A pump station will be constructed on the northern portion of the property. Pave 8 of 9 XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ?No Is this an after-the-fact permit application? Yes ?No XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Appfcant/AgentVidnature / Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 9 of 9 I ,V ? ? ?f??i A I FIGURE 1,? ?l USGS TOPOGRAPHIC NIAP / C I \ i?i!Ti _ ?/ ?? (? ? i _ - .1 ' i-??•455 ?? ? ? %?5? -L??? I °n ? ? ,y s??l' ?il ???. R i ? I ?? ? i i A < ?'/ - ?. ? ?• _It,7 ?? mil- i -? L [ ? -- ? ? / lD.fll??..?f1`? ? t3M\?ower lug ;_/ _? ?/ ? ?? " •11}1 ?Z/mil ?? ? I ? ???? '? ,480. G6 / ` -\ ill J C/v ??) n ken 4 R.. 1 ? ,rte 0 7 ?? , - • v ?'? <e ?? , F,-T, Fl -777 r 64 ?? " I' v ?•, ? 5zN 1305 1152, / I . .?. 166, <?.., ( APEX, N. C. N35375 -W7845/7 5 1974 PHOTOREVISED 1981 ?? r ?I DMA 5255 111 NE -SERIES V842 ? t - ? ?• ?- _ Sc Jdnryl' / C'•) .. i, - \\ °J lm`(I3&?? \ -.), SCALE l 24 C00 r I MI E ?I ( 1 nnr? G ) 7C 3 r, c ?)0 5,r)cO "000 7000 f EE. )- V i VMEti .. CONTOUR INTERVAL 10 FEET ,?A\ r?A• /ryAE GEODETIC vERTICAL DATUM OF 1929 /?? VI IRF ?? Ohl (()l ? l•l, \('tiOII, Sl ll\ I.1 ?1 ?1' ,•? .c . • y i` Asc 41 C? jl?- ?. Pkl?i ti: AP0.; \ nnlfl ? . Cc C2 9sc i Q nnBJ ,' CIC3 \ tl s <? , t a `• y .i r11 `?nnC2 nsr, i r f Agb A 02 L• - - ?. E3 /. ti a? •. i $ ApC2 t% c O ? r a r - CF.Bl ,i `? A Q - j?n - C 1 m v •?+T Anf? I ?Y ? .` q? ? rho,, •\ .??. :`tna?k-1?-. y? E31 `Y ti?H2 ?- ? ? ',. •? l•. ? DuD f7?.Ye. ??t?D ..?'? ?. s ZC \ t??;'r"`}. +•`t ?_,. r y - 3 °?- Y ?F ; Cn ? Q ' / •-. ?:; 1 ? ? y 'c. ' ?? •AKG2. , ??cf?y.'K \ ? S ? ?+E??ye - ; ; AgR? v F r• y c?: ?8G2 . 7 r ?? ztzsn Ag02 k ?WmE_?? i? X15 rE % is I\ k ril AOi py ?a ell ? ? E1 A B2 cscz ? , f ` V 1 1??'rl \V',fk?: Comm', iN( SI Sm c\? \I,k1) Sl?cc(s ' mss} eY. . . k k. 7r, z `?' r=x IG AREA 3 I i / Ij STORMWATER POND / & GREENWAYT"11?? AREA 1 ROADWAY CROSSING I a? \ Q 9 -y 7 3 REA 4 UTI LITY CROSSING 16 24 29 WETLANDS LOCATION 23 26 ? i (TYP.) !-- 14 i'r'k \ AREA 2 13 M ?.. , UTILITY i i M CROSSING 30 POND 1 - ?-- - b n w - ? RIP 62 41 ss u ss I 42 95 r u 67 6d 41 I _ 70 N - 47 / I I WE -J 51 32 53 ss I ? \ 69 ? ' I n 70 n 76 \ \ - I NOTES: 72 _I I " 74 75 \ 1 ? 1. LAYOUT SHOWN IS -J _ ?\ PLANS BY WITHERS CT / / / I WETLAND IMPACT 3275 SF ,I ??$ `/ . •??,? - - - - " 'fk? 00, zor 30' NR@ 20NE• 1 \ .Y ItP T ZONE J'CMPA T -37 -2317 SF >> ZONE _2_ IMPACT -- -- -8 / 3518-SF--- Y Y r r r r Y Y Y r r r Y •.( i• r Y r Y r fi r Y r Y r Y r Y r Y Y Y `r Y r I ? ? r r r r Y r Y Y r r r r Y :•.i ?a? Y Y r r r r t r r r r Y r r r Y r r f r Y \ Y Y Y Y Y r Y r ..y. 'L•y..y...y ?I ?I.f. s. •. r r r r f r ttr r r Y Y r r r r r r r r YW W „` \ r r Y Y r Y r ?r?r rr[Y,\NY1D8 Y Y :}:: Y r y r Y Y Y r Y r Y Y r r Y Y r i 'r \ ?? r Y Y r? Y-- a'i r r r r Y y r r r r Y r r r Y 1\\ `\\ Y r r r r Y r r Y r r ••y'• ': •,i •. •r; •,f.•. :•r•.;.1 •."t': r;:'r :'. ?; \ \ \ ?' r Y r r Y r r . r' 1.•: `\• ? ?'•: •' •Y ? r r r \ ? I - - - - - -- - - - - - - ?0 - - - - - -- - - - - - .:y;....•.•.•.•.. /396 / `400'---- - -?-- 1 \ \ , 396/ / / --------- - 3 6 1 _410--- - 4 / 410 Z 4 ?•. _?--- /C.-. ?•"'- -? / ,/ ?/ ./? ?-420----?' %? -? < ?. \ J WETLAND IMPACT ------ - (STORMWATER MGMT. POND) y r 15 // r y WET NDS _?--- / r ?. tea., `? ' / / r y r y 20 ??? ?+ ?? 0- sw S?A y y y R` r 20 ? y y y 41. ' \ r r 30! y VARS Ile lip r 1 r r \ 1 y y r ?1 Y J r r r \ r y - r -- \ I' ••? y y r Y ? r i ,????\\ \\\_ `EjEE SHT. 1-3 y y y y y r y y r FOR GREENWAY r r IMPACTS y r r • •• \ \ \ r r y y r ' ? . \ \ \ y r r r \ • \ \ \ r y y r y y \ \ \ \ r .+ y y y r d r \ \ \ •?• ? j 'i y y r y \ \ \ \ 1 ? y r y y y y ? 4 y ? " V`J ArF Michael F Easley Governor 4U;K William G. Ross Jr , Secretary OG Nor th Carolina Department of Environment and Natural Resources f co Alan W. Klimek, P E Director > Colleen H. Sullins, Deputy Director p Division of Water Quality 7/ 15/2004 NBRRO # 04-215 Wake County Robert F. Goldstein & Assoc., Inc. Page I of 2 8480 Garvey Dr. Raleigh, NC 27616-3175 Subject Property: Off Ten-Test Rd, Apex, NC Dutchmans Branch, (27-43-4.5, WS III NSW, 030402 On-Site Determination for Subjectivity to the Neuse River Riparian Area Protection Rules (15A NCAC 2B.0233) Dear Mr. Peffer: On 7/07/04, at your request I conducted an on-site determination to review stream features located on the subject property for applicability to the Neuse Buffer Rules (15A NCAC 2B .0233). The features in question are labeled as "A, B, C, D & E" on the attached map initialed by me on 7/12/04. During the site review it was pre-determined that feature "B" in its entirety was subject to the Neuse Buffer Rule. Feature "A" (including the pond) downstream to flag "AT' is subject. Then below flag "A3" is flag NBR Start Flag" continuing off property is also subject. During the site I determined feature "C" to be an ephemeral channel, therefore not being subject. Feature "D" is not subject. Feature "E" is subject from culvert continuing to feature "B". If a stream is located on the Soil Survey Map for that specific County and or the USGS Topographic Map and reaches a numeric value of at least 19 points the stream is at least intermittent and is subject to the Neuse Buffer Rule. The Division of Water Quality (DWQ) has determined that the surface water labeled as "A, B & E" on the attached map is Subject to the Neuse Buffer Rule. These features listed above and its associated buffers should be identified on any future plans for this property. The owner (or future owners) should notify the DWQ (and other relevant agencies) of this decision in any future correspondences concerning this property. This on-site determination shall expire five (5) years from the date of this letter. Landowners or affected parties that dispute a determination made by the DWQ or Delegated Local Authority that a surface water exists and that it is subject to the buffer rule may request a determination by the Director. A request for a determination by the Director shall be referred to the Director in writing c/o John Dorsey, DWQ Wetlands/401 Unit, 2321 Crabtree Blvd., Raleigh, NC 27604-2260. Individuals that dispute a determination by the DWQ or Delegated Local Authority that "exempts" a surface water from the buffer rule may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. Applicants are hereby notified that the 60-day statutory appeal time does not start until the affected party (including downstream and adjacent landowners) is notified of this decision. DWQ recommends that the applicant conduct this notification in order to be certain that third party appeals are made in a timely manner. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This determination is final and binding unless you ask for a hearing within 60 days. This letter only addresses the applicability to the buffer rules and does not approve any activity within the buffers. Nor does this letter approve any activity within Waters of the United States or Waters of the State. If you have any additional questions or require additional information please call me at (919) 571-4700. Raleigh Regional Office 1628 Mail Service Center Water Quality Section Raleigh, NC 27699-1628 'gCDEF phone (919) 571-4700 Customer Service facsimile (919) 571-4718 1-877-623-6748 Sean Peffer 7/12/2004 Page 2 of 2 Sincerely, M cliacl H Environmental Specialist DWQ, Raleigh Regional Office cc: DWQ 401 Wetlands Unit, RRO Regional Office File Copy Central Files Wake County NBRRO # 04-215 7/15/04 Onc No rtliCarolina DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Determination Manual) Project / Site: 54 acre Ten-Ten Rd. Site Date: 06/07/04 Applicant/ Owner: John Powell County: Wake Investigator: Sean Peffer State: NC Do normal circumstances exist on the site? Yes x No Community ID: Is the site significantly disturbed (Atypical situation)? Yes No x Bottamland Hardwood Is the area a potential problem area? Yes No x Forest (explain on reverse if needed) Transact ID: E6 VEGETATION Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1. Liquidambar styraciflua tree FAC+ 9. 2. Fa_ us grandifolia tree FACU 10. 3. Carya cordiformis tree FAC 11. 4. Parthenocissus quinquefolia vine FAC 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 75% Remarks: HYDROLOGY Recorded Data (Describe In Remarks): Wetland Hydrology Indicators Stream, Lake, or Tide Gauge Aerial Photographs Primary Indicators: Other _ Inundated -Saturated in Upper 12" _ No Recorded Data Available _ Water Marks _ Drift Lines Field Observations: _ Sediment Deposits _ Drainage Patterns in Wetlands Depth of Surface Water: 0 (in.) Secondary Indicators: Depth to Free Water in Pit: >12 (in ) Oxidized Roots Channels in Upper 12" . Water-Stained Leaves Local Soil Survey Data Depth to Saturated Soil: >12 (in.) FAC-Neutral Test Other (Explain in Remarks) Remarks: SOILS Map Unit Name (Series and Phase): Wehadkee and Bibb Soils (0-4 percent slope) Drainage Class: poorly drained Taxonomy (Subgroup): Fluventic Haplaquepts Confirm Mapped Type? Yes_ No_ Profile Description: Depth Matrix Colors Mottle Colors Mottle Texture, Concretions, (inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 0-6 10YR 3/3 6-10 10YR 5/2 10-16 10YR 5/3 Hydric Soil Indicators: _ Histosol _ Concretions _ Histic Epipedon _ High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor Organic Streaking in Sandy Soils _Aquic Moisture Regime Listed On Local Hydric Soils List -Reducing Conditions Listed on National Hydric Soils List Gleyed or Low-Chroma Colors Other (Explain in Remarks) Remarks: WETLAND DETERMINATION Hydrophytic Vegetation Present? Yes X No Is the Sampling Point Wetland Hydrology Present? Yes No X Within a Wetland? Yes_ No X Hydric Soils Present? Yes No X Remarks: Area not classified as a wetland based on the criteria set forth in the 1987 Army Corps of Engineers Wetlands Delineation Manual. DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Determination Manual) Project / Site: 54 Acre Ten-Ten Rd. Site Date: 06/07/04 Applicant / Owner: John Powell County: Wake Investigator: Sean Peffer State: NC Do normal circumstances exist on the site? Yes x No Community ID: Is the site significantly disturbed (Atypical situation)? Yes No x Bottomland Harwood Is the area a potential problem area? Yes No x Forest (explain on reverse if needed) Transect ID: flag E6 Plot ID: Wetland VEGETATION Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1. Fa ,us grandifolia tree FACU 9. 2. Liquidambar styraciflua tree FAC+ 10. 3. Anmdinaria pigantea herb FACW 11. 4. Viburnum nudum herb FACW+ 12. 5. Airsaema triphyllum herb FAC- 13. 6. 14. 7, 15. g 16. Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 60% Remarks: HYDROLOGY Recorded Data (Describe In Remarks): Wetland Hydrology Indicators Stream, Lake, or Tide Gauge Aerial Photographs Primary Indicators: Other Inundated _ x Saturated in Upper 12" No Recorded Data Available _ Water Marks _ Drift Lines Field Observations: _ Sediment Deposits _ Drainage Patterns in Wetlands Depth of Surface Water: (in.) Secondary Indicators: Oxidized Roots Channels in Upper 12" Depth to Free Water in Pit: (in.) r Water-Stained Leaves Local Soil Survey Data Depth to Saturated Soil: 10 FAC-Neutral Test (in.) Other (Explain in Remarks) Remarks: SOILS WETLAND DETERMINATION Map Unit Name (Series and Phase): Wehadkee and Bibb Soils (0-4 percent slopes) Drainage Class: poorly drained Taxonomy (Subgroup): Fluventic Hap laquepts Confirm Mapped Type? Yes No Profile Description: Depth Matrix Colors Mottle Colors Mottle Texture, Concretions, (inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 0-8 l OYR 4/2 8-14+ I OYR 4/2 l OYR 4/4 few Hydric Soil Indicators: _ Histosol Concretions _ Histic Epipedon _ High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor Organic Streaking in Sandy Soils Aquic Moisture Regime Listed On Local Hydric Soils List Reducing Conditions Listed on National Hydric Soils List x Gleyed or Low-Chroma Colors _ Other (Explain in Remarks) Remarks: Hydrophytic Vegetation Present? Yes x No Is the Sampling Point Wetland Hydrology Present? Yes x No Within a Wetland? Yes x No Hydric Soils Present? Yes x No Remarks: Location classified as a wetland based on the criteria set forth in the 1987 Army Corps of Engineers Wetlands Delineation Manual. 02!01/1994 20:57 919-872-9214 PAGE 02 R,01 ,g ?1or!a?a?caisYCZttd?dootllx>C44f ?sta ENVIRONMENTAL CONSULTANTS 8480 Garvey Drive Since 1985 Tcl:(919)872.1 174 or (80OH07-0NN9 Raleigh, North Carolina 27616.3175 Fas:(919)872 92114 e-mail: raoldstcin97iraCarolina.com wcbsitc w?rv jjja mintas-OW Agent Authorization This letter is intended to allow representatives of Robert J. Goldstein and Associates, Inc. (Agent) to act on behalf of the client/property owner when corresponding with the U.S. Army Corps. of Engineers (USACE). In order for the USACE to conduct correspondence with an Agent on behalf of the property owner, the property owner must provide a signed statement authorizing the activity. Please have the property owner sign and date this letter and return a copy to our office. grant representatives of Robert J. Goldstein and Associates, Inc. the authority to act as my Agent when corresponding with the USACE regarding the property located at 3$25 Teh Tevi 9J. .e G 2157b2 ACOE Field Office Location ACOE Field Office County Manager Property Owners Signature Date O- o! - o Y- Cc! Sean PefFef, RIGA G/S/GPS Environmental Assessments a Environmental Impact Staterrrents 'P Jurisdictional Weiland Delineations 0 Endangered ppCCies S'urrt t a Mapping OReservoirs 0Archaeological Surreys and Testing W iva'!er SuPPIY Projects OReal Estate Risk Assessments Lake Mnno nr u'crrc csla d hfanagementT•instreamPl reatment Flow AnatYsel •Mitigation Plans 05tream Restoration 0 Municipal Solid Waste Ian ditlls • Sewer //.?I, s tVaslewaterants 0 404 and 401 Permits AGroundwaler Monitoring •Blological Assessments •Expert Witness T(-,tinronr 2089 WITHERS & RAVENEL, INC. 111 MACKENAN DRIVE GARY, NC 27511 CENTRAL CAROLINA BANK CARY, NORTH CAROLINA 27513 66-46-531 CHECK DATE October 6, 2004 PAY Two Hundred and 00/100 Dollars TO NCDENR Division of Water Quality 512 N. Salisbury Street Raleigh NC 27604 11'000 208 9 611' i:0 5 3 10046 5i: 0 105441 AMOUNT $200.00 M WITHERS & RAVENEL, INC. 2 0 8 9 E Invoice Number Date Voucher Amount Discounts Previous Pay Net Amount : 204028.1 Powell Tr 10/6/04 0019934 200.00 200.00 NCDENR Totals 200.00 200.00 CCBChChe cki 2 L -- WITHERS R ENEL STORMWATER MANAGEMENT PLAN 4 a q POWELL TRACT AT TEN-TEN RD. Cary, North Carolina 4 4 Prepared For: 4 WIND)AM DEVELOPMENT GROUP 1130 Situs Ct., Suite 250 `a Raleigh, NC 276o6 4 4 Prepared By: WITHERS & RAVENEL, INC 4 in MacKenan Drive Cary, North Carolina 27511 September 2004 W&R Project No. 204028 A POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA a INTRODUCTION The purpose of this study is to document pre- and post-development peak stormwater discharges fl for the 1-year, 5-year, and io-year design storm events. The goal is to provide detention structures adequate to maintain a discharge less than or equal to the pre-development peak discharges after the site has been developed. p The site currently has two streams with loo ft buffers, one in the center of the site and another on the north boundary of the site. There are no ponds on the existing site. There are two stormwater Best Management Practice (BMP) proposed for the site to meet peak attenuation requirements and e provide reductions of 85% Total Suspended Solids (TSS) and 25% Total Nitrogen (TN). The o proposed BMPs are designed with a normal pool depth of three feet and meet the surface area and storage requirements as regulated by the North Carolina Department of Environment and Natural 0 Resources. 4 METHODOLOGY q The stormwater study was conducted using the natural drainage features as depicted by the Wake County aerial topographic information (2-ft contours), field survey data and proposed development within the drainage areas. The Powell Tract was entered into the model as three drainage areas q based on natural and proposed drainage patterns, to evaluate post development peak discharge 4 rates. In the proposed model, the area was subdivided with two areas routed through the BMPs and the remaining area discharging directly to the outfall. The individual peak discharge rates from the 4 three evaluation points were summed to get total pre- and post-development peak discharge. The scope of work included the following analyses: 4 Hydrology o Simulation of the i-year, 5-year, io-year, and loo-year rainfall events for the Cary area q ? Formulation of the i-year, 5-year, io-year, and ioo-year flood hydrographs for the pre- and post-development drainage areas A Hydraulic ? Routing the 1-year, 5-year, io-year, and iooyear flood hydrographs for post development A runoff through the proposed stormwater BMPs The results of the hydrology calculations are used in the hydraulic analyses. The hydraulic design requires the development of stage-storage and stage-discharge functions for the two wet ponds. The rainfall/runoff hydrographs, stage-storage and stage-discharge functions have been compiled to create a routing computer simulation model using Haestad Methods PondPack vg.o software. This PondPack model was then used to assess the impact of the peak discharges for the design rainfall =i events. The PondPack modeling results are provided as appendices to this report. HYDROLOGY The Rational Method was used to determine peak discharge rates for the 1-year, 5-year, 10-year, and 100-year design storm events for the Cary, North Carolina area. The rational formula estimates the peak rate of runoff by using the drainage area, runoff coefficient, and mean rainfall intensity for a duration that is equal to the time of concentration. The rational formula is calculated as follows: Powell Tract at Ten-Ten Rd W&R Project 204028 Stormwater Management Report September 2004 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Q=CIA Where: Q = Peak flow form the drainage area (cfs) C = Coefficient of runoff I = Rainfall intensity (in/hr) A = Drainage area (acres) The runoff coefficients were determined using those values developed by Dr. N.R. Malcolm, North Carolina State University, and published in Handbook of Applied Hydrology, Chow, 1964. The values used for each drainage area are listed below in Table 1. 4 A A A A s? A TABLE 1. DRAINAGE AREA SUMMARY Pre-Development Description Open Space Woods Total Drainage Area #1 Acres 16.29 0.42 16.71 Drainage Area #2 Runoff Coefficient 0.22 0.20 0.22 Description Acres Runoff Coefficient Open Space 0.44 0.22 Woods 6.21 0.20 Total 6.65 0.20 Description Impervious Open Space Woods tla, Sri:. ...s _. Total Powell Tract at Ten-Ten Rd Stormwater Management Report Drainage Area #3 Acres 0.82 11.48 18.72 31.02 2 Runoff Coefficient 0.95 0.22 0.20 0.23 W&R Project 204028 September 2004 4 4 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Post Development Drainage Area #1 Description Acres Runoff Coefficient Onsite Open Space 0.90 0.22 Impervious Surface 3.57 0.95 Lots 12.24 0.40 Offsite Woods 2.5 0.20 Open Space 0.5 0.22 Impervious Surface 2.1 0.95 t _7 Total 21.81 0.51 Drainage Area #2 Description Acres Runoff Coefficient Onsite Open Space 0.81 0.22 Impervious Surface 1.78 0.95 Lots 4.o6 0.40 Offsite Open Space 2.6 0.22 Impervious Surface t , 7 -4 k o.6 - 0.95 fi Total 9.85 o.62 Powell Tract at Ten-Ten Rd Stormwater Management Report 3 W&R Project 204028 September 2004 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA Drainage Area #3 Description Acres Runoff Coefficient Open Space 1.82 0.22 Woods 14.37 0.20 Impervious Surface 2.95 0.95 Lots 11.88 0.40 Y' t. .3. a .1 ; }I fiY} 3'1 _ii:18f.3 t.`tr i is..- ,.L 0"F "l : ?i? . tts St1t Y` ta, N t Total 31.02 0.35 The Modified Rational Method was used to size the detention storage for the two wet ponds due to the small drainage areas (<25 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 Kirpich (TN) method was used to compute pre-development time of concentrations for the drainage areas. The Kirpich (TN) equation is as follows: Tc = 0.00013 * (L1°.")*(Sf-0'385) Where: Tc = Time of Concentration (hrs) Lf = Flow Length (ft) Sf = Slope (ft/ft) The post-development time of concentration was set at 5 minutes for all drainage areas to account for the piped drainage systems and small areas of sheet flow. HYDRAULICS Computer simulated reservoir routing of the 1-year, 5-year, 1o-year, and loo-year design storms utilized stage-storage and stage-discharge functions. Stage-storage functions were derived from the proposed contours for the two wet ponds. A non-linear regression relation for surface area versus Powell Tract at Ten-Ten Rd 4 W&R Project 204028 Stormwater Management Report September 2004 I :4 .4 4 4 4 4 4 4 4 4 4 4 4 rf 4 4 4 A 4 4 4 POWELL TRACT AT TEN-TEN RD STORMWATER MANAGEMENT PLAN CARY, NORTH CAROLINA elevation was derived for each BMP. This relation estimates the incremental volume of the basin to the stage or elevation of the basin. Stage-discharge functions were developed to size the outlet structure for the pond. CONCLUSIONS Based on the routing study, the post development peak discharge from the entire site is less than the pre-development peak for the i-year, 5-year, and to-year design storms. Table 2 below summarizes the peak attenuation results. Both ponds also contained the discharge from the loo- year storm without overtopping the dam. The resulting post development nitrogen export is 1.99 Ibs/ac/yr for the site. A buy-down is not required since the nitrogen export is less than 3.6 lbs/ac/yr. Copies of the detailed supporting calculations for nitrogen export are provided in an appendix to this report. TABLE 2. PEAK ATTENUATION SUMMARY FOR THE 1-YEAR, 5-YEAR, AND 10-YEAR DESIGN STORMS 1-year Qpeak 5-year Qpeak io-year QQeak Pre-development Drainage Area #1 (Onsite Only) 17.77 cfs 23.07 cfs 25.38 cfs Drainage Area #2 (Onsite Only) 6.88 cfs 8.88 cfs 9.74 cfs Drainage Area #3 32.90 cfs 42.90 cfs 47.26 cfs Pre-Development Total 57.76 cfs 74.85 cfs 82.38 cfs irr'. rry ti?i:1 Lt + Post-Development Drainage Area #1 0.35 cfs 0.41 cfs 0.44 cfs Drainage Area ##2 0.20 cfs 0.22 cfs 0.23 cfs Drainage Area #3 55.64 cfs 71.79 cfs 78.77 cfs Post-Development Total 56.19 cf., 72.42 cfs 79.44 cfs Powell Tract at Ten-Ten Rd Stormwater Management Report 5 MR Project 2014028 September 2004 Q Q 4 Q 4 4 A A Project Name: Powell Tract at Ten-Ten Road Project #: 204028 City/State: Cary, NC Date: 13-Jul-04 Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant Removal Fffiann,-..:.. fh., Wortninnt % 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 uuul?u. i.? -N1\/-vvkj Jtunnwdter t3esi management Practices, pg. J, April 1999 WET POND #1 (85% TSS Reduction; 25% TN Reduction) Total On-site Drainage Area = On-site Impervious Area = % Impervious Surface Area = Surface Area of Permanent Pool: Assumed depth - 3 SA/DA ratio - 1.72 16.71 acres 6.63 acres 39.7 % 4 5 feet 1.42 1.24 % From Table 1.1 Minimum pond surface area (SA) - (DA * SA/DA ratio)/] 00 SA = 0.287 0.237 0.207 acres 12499 10325 9032 sq. ft. Normal pool elevation - 400.0 feet Surface area provided - 0.377 acres 16442 sq. ft. 1-Inch Runoff Volume Calculation Using the runoff volume calculations in the "Simple Method" as described by Schueler 0 987) Rv - 0.05 + 0.009(1) where, Rv - Runoff coefficient, in./in. I - Percent impervious Rv - 0.41 in./in. Total runoff volume from 1-inch precipitation: Runoff volume, S - (Design rainfall) (Rv) (Drainage Area) S = 0.567 acre-ft 24690 cu. ft. Stornnw,'Wr BMP C-+Ics_PowelI Ten- tenJu104.xIs - Pond #1 9/2/2004 " -U 43 4 4 4 C? C? 0 O C? 4 t a i? a a, f.? A D• >D s?• Project Name: Powell Tract at Ten-Ten Road 11 roiect #: 204028 City/State: Cary, NC Date: 13-Jul-04 Table 1.1 Surface Area to Drainage Area Ratio for Permanent Pool Sizing for 85% Pollutant Removal Effirienrv in the Piedmont % Impervious Cover Permanent Pool Dept 3.0 4.0 5.0 6.0 h (feet) 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: r*4t_utrvtvuvvt4 ,)tormwater best management Practices, pg. 5, April 1999 WET POND #2 (85% TSS Reduction; 25% TN Reduction) Total On-site Drainage Area = 6.65 acres On-site Impervious Area = 2.80 acres % Impervious Surface Area = 42.0 % Surface Area of Permanent Pool: Assumed depth - 3 4 5 feet SA/DA ratio - 1.81 1.50 1.31 % From Table 1.1 Minimum pond surface area (SA) - (DA' SA/DA ratio)/100 SA = 0.120 0.100 0.087 acres 5242 4350 3787 sq. ft. Normal pool elevation e 390.0 feet Surface area provided e 0.141 acres 6124 sq. ft. 1-Inch Runoff Volume Calculation Using (lie runoff volume calculations in the "Sirnple Method" as described by Schueler 0 987) Rv - 0.05 + 0.009(1) where, Rv - Runoff coefficient, in./in. I a Percent impervious Rv - 0.43 in./in. Total runoff volume from 1-inch precipitation: Runoff volume, S - (Design rainfall) (Rv) (Drainage Area) S = 0.237 acre-ft 10342 cu. ft. Robert J. Goldstein & Associates, hic. ENVIRONMENTAL CONSULTANTS 8480 Garvey Drive, Raleigh NC 27616 tel: (919) 872-1174 fax: (919) 872-9214 email: rgoldstein@RJGAcarolina.com TO 0 WE ARE SENDING YOU Ef"Attached ? Under separate cover via- • Shop drawings ? Prints ? Plans ? Copy of letter ? Change order ? ? Approved as submitted ? Approved as noted ? Returned for corrections COPIES DATE NO. I / DESCRIPTION W THESE ARE TRANSMITTED as checked below: ? For approval ? For your use ? As requested or review and comment ? FOR BIDS DUE REMARKS 19 ? 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Article Number 7004 11160 0002 2706 6820 (Transfer from service label) PS Form 3811, February 2004 Domestic Return Receipt - UNITED STATES POSTAL SERVICE LISPS • Sender: Please print your name, address, and ZIP+4 in this box • NC DENR Division of Water Quality 401 Oversight/Express Unit 2321 Crabtree Boulevard, Suite 250 Raleigh, NC 27604 First-Class Mail Postage & Fees Paid Permit No. G-10 i i vv~ LlJ ~V UL LLJLII_ J I ~ \ I I I \ ~ ~ ~ ~ ~ ~ II \ I ~ ~ ~ ~ I VA \ ~ \ ~ SORGE, JOHN P ~ LAURIE K GONZALEZ, RI ARDO A & PATRICIA F 5505 DEN HEIDE~i WAY 5433 DEN HEI ER WAY DAVISON, DAVID SCOTT & SUZANNE C TAYLOR, ROBERT W JR & MARY R N JR & MARY R TRUST ~ RALEIGH NC 2 606-9560 RALEIGH NC 2 606-9584 5425 DEN HEIDER WAY 5409 DEN HEIDER WAY WAY ~ \ )6-9584 \ \ 0761,03 41 411 -000 0761,03 41 430 -000 RALEIGH NC 27606-9584 RALEIGH NC 27606-9584 R-40 I R-40 0761.03 41 4789-000 0761,03 42 5201-000 000 ~ ~ I ~ ~ R-40 R-40 ~ ~ I ~ ~ ~ ~ I ~ CHEN, DON CHI & CHING HUI ~ I 5429 DEN HEIDER WAY SIGMON, GREGORY L & BETSY A THOMAS SIGMON \ ~ \ 5405 DEN HEIDER WAY ~ \ I RALEIGH NC 27606-9584 RALEIGH NC 27606-9584 ~ \ \ ~ II 0761.03 41 4569-000 I ~ R-40 PHIFER, MARK P & TERESA 0761.03 42 5424-000 ~ ~ I M 5421 DEN HEIDER WAY ~ ` _ - RALEIGH NC 27606-9584 R-40 ~ _ _ _ _ _ =~IAT~bEd AREA REPRESENTS 0761.03 41 4987-000 ~ \ I ` _ 100-YR HEADWATER ELEV. ~ R-40 - _ \ ~,~p / ) _ A A R N00' 5`51 "E ~ I . - ~ ~ I ~ 1 ~ _ / ~ A 1 ~ ~ ~ \ 104,1$' ,L ~ I o ~ c>r ~ A ~ \ I J I / ~ .,r i. ~i ~ ~ ~ ~ -~te--~~ ~ ~ i i ~ ~ A / / N ,I IQ'~I ~ ~ ~ ~ 1 ~ ~ I I I ~ I 414 ~ - ~ - iii/, , ~ o ~ r. 1 ~ \ ~ A I ~ I ~ I i ~ vicHic ! / ~ / - ~ r~ ~ ~ ' . ~ - - ~ ~ ~ i ' Pi w ~ ~ ~ i ~ 19 ASPHALT GREENWAY TRAIL - rne~E ~ i ; ; _ l ~ ~ ~ p~ ~ N,l,,l, 1 n \ ~ 1 1 I 1 ~ w~ / ~ l r ~ ~ . \ / ~ / ' / ~ / / F / F k E t7 N ~ d ~N N ~ ~ \ V ~ ~ ~ I 1 ~ ~ I ~ ~ ~ I ~ ~ z) ~ ~O' t o rv V 1 ! % w 1 ~ N . Z p ~ ~ 1 ~ I / / I m Z 12 \ ~ 14 15 I I ~ ~ I ~ ~ / ~ - ~ ~ i / i ~ E l I ~ . 6 1 I ~ ~ ~ ~ Irv ~ A ~ ~ ~ ~ ~ / ~8 ~ z~ ~ 1 lm ~ \ \ / ~ ~ - v~ 1 1 1 1 ~ ~ ~ ~-t\ 1 I ~ J ~ ~ i i Q ~ \ ~ ( ~ / y, i ~ L f , f ~ ~ A I 1 ~ ~ / D' I I I w ~ ~ ( f~ ~ ~ I ~ ~ ~ ~ o ` - - / / ~ -r F ~ l I ~ ~ I I / V I ~ I I ~ I 1, « ,W ~ 20 dRAINA E ~ I ~ ~ ~ ~ ~ f III ~ ~ I I I ~ j I / ~ ~ on I I .I 1` ~ ~ ESMT,~ ~ ~ i ~G~ i I i i YH P A ~ ~ I i I GRE I ~ ~ ~W I ~ ~ - \ / / ~ J / ~ F ~ _ - STEPS ~ ~ ~ c ~ - o ~ I l i o ~ ~ F E ~0 _ ~ ~ / / ` ~ l ~ f ~>a ~ ~,a ~ f ~ , - - _ n _ = I ~ i - - ~ F ~ ''i F k ~ i ~ VAUGHAN IRVIN R JR &EILEEN 0 F ~ ,f ~ ,,r,.. f f, . . . ti 5212 LEIDEN LN ~ / ' / ~ I RALEIGH NC 27606-9553 ~ ~ 1 \ \ ~ \ _ - / f / / f ` ~ ~ 0761,03 42 ss2s-ooo ~ \ ~ n ~ \ \ I ~ / % ~ / ~ / / n ~r,• ~ ~ ~ . ~ ~ ~ I ~ / / / h W ~ / < ~ R-40 \ \ V ~ I I m I V A ~ i / / ATCH~D A EA I$ S MW ER ~ ~ ,i ~ ~ , ~ ~ vI \ N 35 ~ ~ ~ ~ ~ ~ ~ V A \ u AI rn ~ \ ~ ~ ~ / / C SS & MAI EN CE SMT! / ~ ~ ; ~ v N 1 \ w m ~ \ ~ ~ o ~ ~ A \ 1 ~ ~ A 34 ~ ~ ~ / , i ~ F ~ ~ I ~ p, I i / / ~ , ~ \ ~ Sp`~. ' '2 LEVE ~ ~ i / ~ ~ ~ ~ I ~3 / / , i ~ C~ , ~ ~ f ~ ~ « i « E ~ V ~ ~ ~ ~ ~ ~ V A 2~ ~ ~L / ~ Q ~ 1 V ~ ~ ~ ~ ~ 60 ~ 36 ~ V A ~ I~ SP DER \ o ~ " ~ ~ i ~ / ~ ~ ~ - - - A ~ p. A ~ \ ~4 ~ ~ ; ~ / f ~ i f V ~ 1 A 'L ~ ~ ~ ~ ~(4)- HDPE PIP S Ut1'DER / ~ I ~ , ' ~ ~ ~ ~ ~ i 4 / ~ P E \ k - W ' / / ~ « ~ \ \ 1 `~0 ~ ~ I ~ / ~ \ ~ ~ ~ \ ~,9~ ~L T~; IL 16 L~ EACH , A ~ / ~ I ~ ~ l ~l. l ~ ~ - - ~ \ s\ ~ o• ~ ~ ~ ~ ~P ~ i ! P>~OpOS D ST RMWATC~ / f ~ ~ / E f ~ ~ ~ \ ~ ti \ \ - ( ~ ~ I ~ ~ ~ v- ~ ~ V~p mac' ~ oA UP~JR, tvNV.- 14,5 \ ~ ~ l I ~ ~ E E ~ 21-~- -a i ~ i F 2~-~- _ ~ ~ f (F I ` ~i \ BOND ~ 'L ~ 1 0 ~ ~ / E f ~ \ ~ ~ ~ ~ ~ NSA , INvV,= X4,2 ~ / ~ / ~ ~ ~ ~ ~ ~ ~ E « / 1 1 B ~ F ~ ~ ~ ~ SEE ~DET L S . 2~5 1 1 ~ 11 \ ~ ` i='r' f I I I ~ 1 ~ - 'I~ ~ 1 I 0\ \ V A ~ , ~ , ~ ~ I I I I I v---- \ 1 \ ~ 'L ~ I ~ \ ~ , ~2bI i I ~ 1 I~ I I ~ F o F~ 1 I ~ 1 V 1 ~ ~ I I I I I _ I ~ I l ~ \ 8 \ASPH~ILT GREENWAY~TRAIL ~ ~ I ~ I ~ y ~ ~ i 1`' ~ 1 I ~ ~ A - ~ I I I I I I i \ .l k / f f / f \ 3 ~ ~ 1 I 1 1 \ ~ ~ / - 1 I I/ I 17~ ~ ~ ~ • i i~ ~ ~ 1 ~ ~ / I fl I I/ I I I i k \ I I 1 1 ~ ` I I I III I I I I 1 I l . ~ ~ i ~ I ~ . -~j ~ I I 1\ V A~ ~ A X33) / q I I~ I I I ~ ~ / ~ ~ ~ VAUGHAN, IRVIN R &EILEEN 0 i I ti ~ / i ~ ~ I 1 I ~ I I I ~ ~ ti I ~ I I I I S ~ ~ ~ i I IvI I I I , ~ k 5212 LEIDEN LN I I I ~ ~ ~ ~ ~ ~ ~ I (n l I ~ ~ \ ~ ~ ~ ~ / i I I `I 20 I I ~ I I ~ ~ ~ ~ i~ I l~ ~I I I I ~ I ~ / ~ ~ , ~E RALEIGH NC 21606 9553 ~ i - E E / F \ F F f « k « 0761,03 42 9656-000 I I I I ~ ~ ~ ~ I II I ~ I 1 r I I I _ S 2 7 ~ ~ I \ < .t f f t < t F ` R-40 I / II I i ~.5~ 1 N i • ~ E k II I ~ ~ ~ ~ f t < 1 ~ ~ \ , A \ ~ / / I ~ I y / ~ ~ ~ / 1 I I « f f f ~ ~ ~ ~ / I ~ ~ ~ ~ ~ ~ ~ ~ ~ a ~ ~ / / I I I I I I I ~ , / / 1 I ~ I f ~ _ ~ I I I ~ Y ~ f 38 I ~ , ~ \ ~ ~ ~ ~ r / ~ I 1 I ~ E f I _ - , ~ FF Y I ~ ~ « _ 1 ~ V A 1 ~ ~ ~ ~ II I I I V ~I ~ I 1 1 ~ A~\ ~ ~ ~ 1 I I I I 1 1 1 ~ ~ ~ ~ ~ I I I I I E, E ~l I ~ - - , ~ I ~ . ~ ~ ~ - I ~ ~E iE \ ~ ~ I I I I I I I ~f O` ~ f f / Y ~ r~ I T ~ ~ v v v 1 11 I G P I f i~< ~~"'e~ f h 1 o ~ ~ 8 E f E ~ I ~ f /f / ` G VVV ~J ' • ' i - A ~ ~ ~ _ . ~ A V A ~ v ~ ~ I ~ 0~ E~ ~ f f f ~ F ~ \ ~ ~ ~ f f f f h f f f f ~ - ~ \ ~ A o ~ ~ \ ~ ~ ~v ~ ~ /~o ~ E k E 0 \ \ / ~ / ~ E\~ f f~ E f 4 E E E M k « E E ~ / ~ ~ ~ ~ ~ ~ ~ ~ V ~ v / / N ~ ~ ~ . f f E~ r E f E (7 ~ ~ A ~ ~ ~ / " HATCHED AREA IS ~rT6RMWATER) V ~ ~ ~ ~ v ~ i E f. f E f E f « F F k 0~ « ~ ~ « / / °/1 ~ \ \ \ \ \ ~ ~ / / k ~~f f f t f c f E E ' ~S-&-I~"AfNTENANCE~S~I , • , . ~ ~ ~ ~ 31 ~ o~ / ~ ' E f k f ~ f f E f « f t f f E ~ « f E E E , Q~ ~ \ \ y k f f t < t E f E E f f I, I ~ l n~i E f f k f f f .f~ 39 1 I I ~ ~ ~ ~ ~ i,~ ~ i ~ E « < « a /a ~1 ` 14 • ~~1 m RODGERS, WILLS P & SUE H « f F k. f F V ~ F, _ / ~ ~ ~ ~ ~ ! ~ ~ / f, E t f E f Q / A ~ v ~ / / / ~E ~ ~'E ` \ / f E k t`F f E / f 1 / \ / Q k 0 F ~ JR 8205 BELGIUM DR « « ~ k~« \~0' ~ \ RALEIGH NC 27606-9731 W / I ~ \ ~ ~ \ \ \ ~ / / O / / ~ / / / f f E f f E E t ~ f E tI f Vf / / ~ / ~ 1 \ \ ~ \ \ ` / / ~ f f f h f t E N I I • \ ~ ~ \ ~ \ \ ~ ~ ~ / ~ ~ ~ / / k . f t E E f E ~ f t ~ f F t ~ Vd E « f '-t --k -t ~ 1 « F• E E ~ 0761.04 52 2608-000 ,n ' - ~ / ' ~ ~ ~ \ ~ V ~ ~ ~ ~ - I~ v / _ / ; ' ~ ~ 6~- E f f ~ f f f f f E ~ E < f ~ ' R-40 k « F 0 ~ ~ ~ f t ; k < f ~ / £ / ~ / 0 I ~ V' v ~ \ ~ / / / \ ~ _ P ~ ~ ~ fEfff ffffEffff • f k k -/,O E « Y f E t f / /f / , I I I , A ~ ~ ~ _ 'E~ AS HALE G~ A~( ~I~ , 1 ~ \ \ ~ ~ ~ / f f f f f f f E f 1 F k E 0 ~ 1 ~ ~ d , E« ~ k k k~k~~ ~ ~ I \ 1 \ I \ \ ~ \ \ ~ _\J / ~ ~ / / j ~ h f ~ f Of k f f h t f LIE V ' . ~ . ~ ~ V / / V ~ , ~ ~ ~ / f a t f f ~ E E E a • f F 4 ~ « ~ F « ~ ~ ' I i I I I I I \ ~ ~ ~ ~ k f f f f E f ~E~ I~ / ~ v~ v / f E f f E f E f E f f f k~ f~ h f /E v, E « ~~E ~ ti a o , I I I I I _ I I~• v~ A ~ -BL-0Gl RE,S ICI©~' ~ i' ~ ~ k~ E f~ E h~ k• f e f f I I ~ ~ I - / ~ E E f I I I I I ~ ~ ~ FLOOD LIN P; i ' f f E k E E Zi f f ~ f E « ~ ~ « ~ .a « k ~ ~ ~ v. ~ ~ , ~n Y I I T ~ ~ r t f E f E t E E f f E R f r ~ f E f f ~ f f E I I I I I ~ \ ~ i \ ~ \ \ 4 / f~ f f f f E E f f ~I I I I I I I o ~ ~ ~ ~ ~ oov (~'~tBOV~ 100 X~, F 0~ / ~ f E E f f f f ~ / `~1 ` / o ~ v _ ~ / Ek E f E E E fEf f f 'E f f f f I I I I V I I I I ~ 1 ~ v, ~ - ~ f~ ~f f f E f ~ f f E f f E f E t \ t f ` ~ / ' I I I I I I I ~ ~ ~ ~ _ i// 1 Ifl I /yy,~' ~ \ V A A ~ ~ / k E k E k ~ f fl 4 \ I\ I' fl I I / 1 \ E f \ ~ \ / / / f f f f k E E. E E< f E f f f E~ f ~ \ \ ~ f f ~ ~ I I I\ I I I I I / f E E E ~ ~ ~ ~ f f~ f f f f f E E f E f f f f 1 ~ I ~ ~ ~ ~ ~ ~ ~ ~ E ~ I I ~ I I I I I I I I I ~ ~ ~v ~ tiv ~ / i E h E E f f E k E f f v \ y '/E E ~t~ • \ / E k f t E k f f f t E f f T f - ~ , I I I I 1 1 1 1 1 v1 I IV ~ ~ v ~ f \ y ~ ~ ~ ~ e< E E f r f f f r r t r r f I I\I I I I I I ~ r 1 ~ f < f f E E f f f f f < f t E 1 I I~ I ~I I~ I I 1 I ~ f ~ - ~ ~ ~ f E f E f I ` ~ / / f ~ \ ~ f~ f f~ f f f f f E •f f f f E E f f~ t f ~ ~ I I I I I I ~I I r l I ~ I I ~ , ~ {I ~ ~ ~ w / \ I I I\ ~ ~ ~ f F f f f E t E E t f k E h 'E E f f k I E _ / • ~ ~ ~ ~ / ~ h f t f r f E ~k E e r E r f f E E f f f e ~ I I I ~I I I I I ~ r ~ ~ ~ ~ ~ f f f f E E f E E E k E f f fl E I I ~ J ~ ~ ~ I / ~ ~ f~ I I v v ~ ~ ~ f E EEXISTINGf , f f f f f f f f f k f f a I I I I ~h vI I ~I ~ v ~ • ~ _ h f E f f f f E• f E E k E f. f k I I I I I v~ ~s~ ~ as , f E~LAN~ h f f f f f f.~ E E . GRID NORTH (NAD'83) ~ PB 160, PG 63 r~ ~ \ ~ f f f E E/ f E f E E t f f E k f f f f _ ~ ~ ~ I I ~ ti v~ ~ E k f f f f~ f MATHESON, WILLIAM K & SHARON L / I / 1~ -I I I v~ _ v ~ ~ E E f f t E E E E E E E f E ( ~ ` \ r \ ~ \ / f f E f f f f f f f f E' E f r E ~ ~ h f f 8201 BELGIUM DR n F « GRAPHIC SCALE « E RALEIGH NC 27606-9731 ~ so 0 30 60 12a ] _ ~ I , ~ k E E E f f E E f f f f E f~E, • OPOSED STORI~K ~ ~ ~ f E E f k f E f~ f k f E 0761.04 52 3687-000 « k k E R-40 X ~ ~fI \ \ \ ~ \ f f f E f E f f E E f f E E E ,t f f f ~A]I{nJ--'FYI ~.I- \ ~ \ \ \ / IE E f E f f k E f f < P E f f E E t f f /I l~ ~ ~~Q ~ f E f E f f f k f f . E E f k t f f h f f / « k « f S E DETAIL SHT. -A/5-~---~ I y I I I\I~,'~ ~ ~ ~ ~ ~ . ~ \ \ \ \ \ \ f f f k f f t f f k f f f /f E• k E k f f • « k E 1 inch = 80 ft. « I _ I I I I I-1~~~ I T~ I r~ I \I I , ~ \ ~ ~ f E E f f E f ~I I I I I I r ~ ~ ~ E f f f ~E k f - \ \ \ \ ~ V / k f f k f f f t f F E E E f f f f E f / ~ ~ ~ \ \ \ h f h f E f f f f E E k f f l f E f f F E f 1 E , - \ . / ~ \ _ ~ ~ ~ ~ ~ ~ v v ~ A ~ \ ti f i. f E , f f E f f E f ~ E <~f~ ~ ~ v~ ~ ~ ~ ~ ~ ~ • f E r k f f f f f E f E f f E k. E E 'r E~ f h ~r 'o''oopoooeoo®ooo, k D k f f k f f f f F f f f r E E S\ f ~S f~ • h u ~ r f k / E~ CO CAR o, SOi'00 03 W 011 . ~ ~SSI • q • 2172.52' / Ir I~ PURDY, MORRIS FORREST & DONNA B I ~ SEAL LOMBARD JOHANNES S & 8213 NETHERLANDS DR III RALEIGH NC 27606-9659 SONJA 8221 NETHERLANDS DR ~ - - - s : - 23484 HNC 27606-9659 0761.04 51 5188-000 RALEIG ,Qa• Z • ea i R-40 0761.04 51 5531-000 R-40 ~ a•.. PQ ~e. q Rio ~ ~e~ KASPER PETER L & MARY NCI E 8225 NETHERLANDS DR 54 WILLIAMS KAY MARIE ~~N ~ ooN~o'°~' 5416 AMSTERDAM PL RALEIGH NC 27606-9659 RA RALEIGH NC 27606-9708 NASON, LAWRENCE FRANCIS & 0761.04 51 5772-000 07 YOUNG JA50N E Bt SHANNON R ~ R- 0761,04 52 8141-000 MOUNT, J DAVID & GAIL L 0 ~ - - R-40W 8113 BELGIUM DR /Z MARY JO NASON R-40 8209 NETHERLANDS DR 8217 NETHERLANDS OR RALEIGH NC RALEIGH NC 27606-9659 RALEIGH NC 27606-9659 27606-9729 - \ ° ALL CONSTRUCTION SHALL BE 0761.04 52 5697 000 0761.04 51 5084-000 0761.04 51 5384-000 R-40 R 40 R-40 C~ IN ACCORDANCE WITH C~ CURRENT TOWN OF CARY _ ~ STANDARDS AND V ~ / / I ~ ' - - _ _ _ rn SPECIFICA I IONS a No. Revision Date B Designer Scale ~ 1. PER TOC 1ST REVIEW 10/23/04 BDH W&R 1"=60 GRAI GREYHAWK SUBDIVISION SRADING & STORM DRAINAGE WITHERS RAVENEL Sheet No 9 2. REV. INFLOW TO POND 2 12/16/04 ADH Drawn By Date AL 9 2 04 s Checked By Job No. BW 204028.00 WAKE COUNTY CARY NORTH CAROLINA]II NORTHERN SECTION ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919467-6008 www.withersravenel.com ii _ _ ~ ~ ~ ~ i r 1 i ~ ~ ~ 1 1 ~ i I ~ v i ~ ~ I' l ~ I ~ ~ ~ ~ ~ I ~ I I i ~ ~ v i i ~ I I 1 o I\ ~ - I _ i ~ ~ i I I I ~ I I __Q~b I 1 t ~ ~ l I 1 ~ ~ .e _ I i ~ l ~ I i ~ r,', v I ~ I ~ I I ~A ~1 I A 1 I ~ I 1V l~ I 1 \ ~ ~ I - 1 l a -1 I \ v I ~ - .1 ~ I I ~_~tJ 1 e ' ~ . _ ~ ~ I 1 \ V ~ i / ~ ~ i i 1 \ ~ ~ ~ r" ~ -1~-- ~ ~ ~ ~ I 1 ~ r ~ I I ~ 11 I ~ I I .I I - I ~ I ~ _ ~ I _ / 1 ~ ~ I I / I I I ~ ~ / ~ I ti ~ ~ i / i , I ' i I i I I ` I I / / ;f ' I 0 ~ ~ ~ I I ~ I l l l 1 ~ rJ'' r` r I I I I ~ I I ~ i I ~ / I ~I I 1 1 I ~ J ~ I ~ I I ~ I ~ g - ~ I I I ~ I 1 ~ 1 ~ I V ~ \ I a I ~ I I I 1 \ G, p p ~p \ ~ DDDDp~,D I I I ~ ~ 1 1 ~ t ~ ~ ~ ~ av° ~ ~ 1 11 ~ ~ D D D p U? av av ~ ~ ~ 1 \ ~ ~ 1 ~ \ I I a a Qa v ~ ] ~ I ~ \ p D I ~ p D p ~ I a ° a°aa ~ i 1 1 ~ ~ V ~ \ ~ ~ a ° /v a° ~ I 1 ~i ~ \ ~ D D G D ~ / I~ ' D I I ~ a a°av ~ I 1 ~ ~ I va a ° w ( I \ ~ ~ ~ A \ ~pDG DD f I \ pD D I I °a 1 °a ~ ~ I I \ 1 1 ~ ~ °v ~ \ ~ (X p p D G ~ ~ °v \ a ° ~ ~ V A V A \ \ >pDC ~ ~ I \ ~ ~ ~ ~ I ~,v ~ ~ ~ ~ \ \ ~ \ I ~ \ a°° A 1 a ~ I \ V A \ .a° ~ ~ ~ \ ~ \ \ DD ' p p ~ \ \ i?s D D ~ B~ I I a A 1 a a ~ 1 \ \ A ~ a I a ~tQ a ~ ~ ~ ~ ~ \ I A a°° 1 ~ ~ a° ~ ~ A A \ \ ~'p r \ ' \ ~ \ .a ° I v° ~ I \ \ \ ~ D r [ - l A ~ \ ° ° ~ I ~ a,° ~ ~ \ / ~ \ ~ A \ D - \ ~ DDD A Irl I \ I ~ a ~ ~ w - A I ~ \ a ~ a ~ a CQ ° a° a ~ ~ ~ ~ ~ V A A \ \ p P D ~ ~ \ \ D DD ~ I 1 I ~ a ~ \ ~ v-°~ ~ p \ ~ ~ O I \ V A ~~v a v p 6, ~ I ~ A \ A \ \ \ D®D (P1 D ~ \ I ~D ~ ~ C I ~ a°~ A v v °a° ) ~ V S ~ ° \a V A V ° v° ~ I ~ ~ A A V DD~ V I ~ ~ - A V A \ a°~ I 1 I ~ A \ ~ p DDS W COD D V G p CO CU ~ _ A I a°°A \ V A \ °v° ~ ~ / ~ V A a°°o vd ~ ~ ~ ~ \ D D~~ ~ a ° ~ A V A~ \ a i ~ ~ A ~~p ^Dp~ \ I I \ ~ a~ i - V A A \ p ~ \ DDC \ \ ~ \ DD ~ A ~ X77° a \ \ ~ ° ~ / ~ ~ A ,P / 1 a °O i \ \ \ b \ \ ~ Z9 \ ~ ~p ~ I / ~ °°a V A v°` ~ ~ • ~ ~ \ OA ~a ° \ \ ~ a / \ \ \ QA D Dpi ~ A ~ ~p D pp D \ ___r____ \ ~ ~ \ \ d~ / ~ \ \ \ \ ~ p \ \ ` I I \D D \ \ \ V p ~D p A I ~D C V ~ \ I I DD p p ` \ \ DDDDR DpDD~pDD ~ \ I \ v a ~ \ ~ \ \ \ \ pD D~ DD p \ \ I I ~ a a ~GDnD~~ Dp \ \ \ I _ a ,a v ~ - \ \ _ \ A ,aa°v~°°a °vv ~ ~ A V \ \ \ \ \ y ~ ~ W \ ~ ~ \ \ \ 1 \ \ \ - ~ ~~a° a a a ~ \ \ \ ~ ~„v°dw~av°~ ~ ~ ~ O \ V ~ ~P ~ V A v ,V V A ~ - \ ~ ,a~a~, ~ ~ ~ 1 V v ~ A \ ~ ~ \ \ ~ \ ~ ~ ~ ~ ~ \ ~ _ - ` \ \ \ ~ y 1 1 T \ \ 1 TYPICAL PER 50 LF ~ \ \ \ \ \ \ \ 1 \ \ ~ \ \ ~ OF A UATIC SHELF v \ I Q EL.=~ye.odvoND~ \ \ ~ \ \ \ i \ \ V ~ \ \ 1 1 ~ EL-888.O~POND2 \ \ I V \ V A I ~ ~ \ \ \ ~ \ 1 1 \ ` \ \ \ ~ \ ~ ~ \ \ ~ \ \ 1 \ \ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 1 ~ A ~ ~ ~ ~ A ~ A _ \ ~ I ]"0"0"0`~0"0"0"0"0"0`~0"0`~0~'0"0"0"0"0"0"C \ ~ I u 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-v=~ 40 FRAGRANT WATER LILY - 0 0 0 0 0 ~ _ \ \ I 3 ~ ~ ~0~ 0~0 ~ ~0 ~0 \ ~ ~ I ~ ~ ~ , + + 0 0 0 0 0 0 0 0 + + + + + + + + + + + I ~ _ + + + + 000000000 0 + + + + + + + + + + 40 PICKEREL WEED \ 1 I I ~ ~ Q ~ + + + + + + + + + + + + + + + + + + + + i \ ~ / \ ~ ) 1 ` 1~ \ I ( ~ / O + + + + + + + + + \ Q ~ ~ I ~ ~ 30 HARD STEM BULRUSH ~ j \ ~ ~ ~ 1 1 \ f ~ ~ ~ ~ ~ .._._..._._.__.w._._._._._._~.~_~._r.__~~.~_~._rr._r.~.~._..~~._~.__.~.. V \ ~ I ~ ~ ~ ~ ~ ~ ~ ~ ~ \ I ~ C \ \ ~ ~ ~ 1 ` \ \ \ I I ~ ~ ~ , ~ NoRMaL vooL ELEVnnoN \ I \ \ 9 I I l l ~ ~ EL. -~9o.a ~ PoND 1 ~ ~ ~ 1 I ~ l / ; / I ;l \ \ i I I ~ ~ l l j` I ~ ` I \ I I I~ l ~ l ~ I \ 1 / I ~ 1 O ~ ~ ~ II AQUATIC SHELF PLANTING DETAIL 1 o ~ ~ I O ~ ~ :f I I NOT TO SCALE I ~ I ~ ~ I S 0 1 0~ n~ I ~ I I I I I I I ;r ~ I I I I / I I I I I ~ I ~ I I I / I I I I I ( 1 I \ I I I I ~ I I I I I I ~ ~ ~ ~ ~ I I I I 11 ~ I I _ I I I ~ ~ I I I~ I I~ ~ ~ y ~ 0 o ,o. 0 o ,o~ M II II ~ d ASH RACK o v H RA K o ~ CONICAL 1/2" GALVANIZED STEEL TRASH RACK CONICAL 1/2" GALVANIZED STEEL TRAS C ~ IZONTAL) ~ z ~ IM M PENING 51ZE 12° HORIZONTAL (MAXIMUM OPENING SIZE 12" HORIZONTAL)` MAX U 0 ) ) ( Z N / - M ( TOP OF OAM 396.0 iOP OF DAM 406.00 100 YR FLOOD ELEVATION o ~ 100 YR FLOOD ELEVATION o , TOP RISER 404,50 TOP RISER 395,00 _ \ 3 = , 00 1 `3 ~ 3'X3' BOX RISE 1) 2° CIRCULAR OPENING v 400,00 0 3'X3' BOX RISER 1) 1" CIRCULAR OPENING v 390,00 ~ 0,00 ~ L - 400.00 N RMAL P L - 390.00 0.00 INV OUT = 385.00 INV OUT = 395.50 STEM STEM SUPPORT STEM SUPPORT SUPPORT 4" NRS GATE VALVE .VE 133 LE 12" RCP @ 0.75 4" NR5 GATE VALVE 86 LF 12" RCP ® 0.58% w/ PREFABRICATED ANTI-SEEP COLLAR w/ PREFABRICATED ANTI-SEEP COLLAR - . CLASS II STONE CIASS B STONE OUTLET DISSIPATOR OUTLET OISSIPATOR 6'x6'x1.5' 3000 PSI CONCRETE 27'W x 24'L'x 22"p 6.5'x6.5'x1.5' 3000 P51 COIJCRETE- d5D=13" )0 PSI COIJCRETE 14~W x 12'L'x 22°D d50=13" V10 = 11.0 FT/SEC V10 = 11.5 FT~SEC ~~~~""~~~4~~ 'vaRo CTION 1 SE POND SECTION P N 2 OD • r ~W Q o~ N,T.S. o ti 9 N.T.S. a SEAL e ; 's t 23484 _ ~ ~ a S1~cy~ ~ ~ I N~~ ~ ALL CONSTRUCTION SHALL BE a EY 0~ e~.~~ I AC ORDANCE WITH N C CURRENT TOWN OF CARY STAN DARDS AN D SPECIFICATIONS. l4//w(U7- a No. Revision Date B Designer Scale Sheet No. 1. INCLUDE AQUATIC SHELF PLANTINGS 11/12/04 BDH W&R 2. REVISE POND2 INFLOW & ORIFICE SIZES 12/16/04 BDH Drawn By Date AL 9/2/04 GREYHAWK SUBDIVISION STORMW, ~MWATER POND DESIGN DETAILS ENGINEERS I PLANNERS 1 SURVEYORS 25 ~ Checked By Job No, 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 fax: 919467-6008 www.witliersravenel.coni R BW 204028 WAKE COUNTY CARY NORTH CAROLINA INDEX OF SHEETS > RAW I N G S FOR EXISTING CONDITIONS SHT 1 OVERALL SUBDIVISION PLAN SHT 2 DETAILED SITE PLAN -SOUTHERN SECTION SHT 3 DETAILED SITE PLAN -NORTHERN SECTION SHT 4 UTILITY PLAN -SOUTHERN SECTION SHT 5 UTILITY PLAN -NORTHERN SECTION SHT 6 T ~a 1010 ROAD) GRADING AND STORM DRAINAGE -SOUTHERN SECTION SHT 7 GRADING AND STORM DRAINAGE -NORTHERN SECTION SHT 8 EROSION CONTROL PLAN -SOUTHERN SECTION SHT 9 TT O'T-S B-O~ ~ EROSION CONTROL PLAN -NORTHERN SECTION SHT 10 PLAN AND PROFILE - R001 STA. 10+00 - STA. 23+00 SHT 11 PLAN AND PROFILE - GREYHAWK PL. (NORTH) STA. 23+00-STA. 34+22.83 SHT 72 ~ ~ ~ _ ~ ~ ~ ~ PLAN AND PROFILE - BROADWING WAY STA. 10+00-STA. 14+64.94 SHT 13 ~ ~ r--- WING SPAN CT. STA. 10+00-STA. 11+71.12 IM Jg J/ ~ J ~ ~ PLAN AND PROFILE -VAN GOGH LANE STA. 10+00 - STA. 23+23.45 SHT 14 1. PERMITTED USES SHALL BE LIMITED T0: a. SINGLE-FAMILY DETACHED RESIDENCES; I b. PARKS & RECREATION, OPEN SPACE (PUBLIC, PRIVATE AND NONPROFIT USES); AND ~ , B LG I M R c. AMENITIES & ACCESSORY RESIDENTIAL USES. ~ \ J r- PLAN AND PROFILE -HAWKS RIDGE CT. STA. 10+00 - STA. 14+94.77 SHT 15 ~ wR1YX'BS~.~o .48 DWELLING UNITS PER ACRE). 2. MAXIMUM NUMBER OF DWELLING UNITS SHALL NOT EXCEED BO LOTS (1 ' ~ J- -I I PLAN AND PROFILE - GREYHAWK PL. (SOUTH) STA. 10+00 - STA. 13+57.55 SHT 16 MAINTAIN A MINIMUM LOT SIZE Of ~ ~ _ 3. THE LOTS LOCATED ON THE PERIMETER THAT ADJOIN DUTCHMAN DOWNS WILL J L SOARING HAWK PL. STA. 10+00-STA. 13+4037 18,000 SQUARE FEET. THE MINIMUM REAR YARD SETBACK FOR LOTS ADJACENT TO DUTCHMAN DOWNS WILL BE 30 FEET. / II E PR VIDED ON THE SOUTH SIDE ONLY BETWEEN THE LOTS IN THE PROT~OSED 4. ASIDE YARD SETBACK OF 20 FEET WILL B 0 I- SANITARY SEWER PROFILES -LINE "C" SHT 17 DEVELOPMENT AND WAKE COUNTY PIN 0761.50.4302; AND 0761-50-1236 (3000 VAN GOGH LANE AND 3001 VAN GOGH LANE). Q - - ~ SANITARY SEWER PROFILES - LWES "A", "D", "E", "F" & "G" SHT 18 5. A 20•FEET LANDSCAPE EASEMENT ADJACENT TO THE LOTS IN DUTCHMAN DOWNS WILL BE PROVIDED. THIS EASEMENT ~ WILL BE MAINTAINED BY THE HOMEOWNER'S ASSOCIATION ASSOCIATED WITH THIS DEVELOPMENT. L SANITARY SEWER PROFILES -LINE "J" SHT 19 H EXISTING TREES AND VEGETATION ARE LIMITED, THE SITE SHALL NOT BE COMPIETELYDENUDED OR - ~ - _ 6. EVEN THOUG GRADED. THE INITIAL GRADING AND CLEARING SHALL BE LIMITED TO THE ROADS (RIGHTS-0F-WAY AND EASEMENTS), ~ ~ I PLAN AND PROFILE - 1010 ROAD WIDENING SHT 20 FRONT YARDS, SIDE YARDS AND BUILDING ENVELOPES. SELECTIVE CLEARING AND GRADING IN REAR LOT SETBACK ~ AREA5 AND OPEN SPACE WILL OCCUR AS LOTS ARE DEVELOPED AND ON A SELECTIVE BA51S. _ W STRIPING PLAN - 1010 ROAD SHT 21 u ENT WILL BE CONSISTENT WITH THE SKETCH PLAN SUBMITTTED A5 EXHIBIT A. EXACT LOCATIONSOF ANY 7. DEVELOPM STREET STUBS WILL BE DETERMINED AT THE TIME OF SUBDIVISION APPROVAL. STORMWATER MANAGEMENT PLAN SHT 22 8. PENDING WRITTEN REQUEST BY THE TOWN OF CARY PARKS AND RECREATION DEPARTMENT AND REIMBURSEMENT! CREDITS FROM THE TOWN, A 20 FOOT (MINIMUM) GREENWAY TRAIL WILL BE DEDICATED AND BUILT BY THE DEVEtl)PER. THIS GREENWAY WILL GENERALLY BE LOCATED ALONG THE ENTIRE LENGTH OF THE STREAM BUFFER. FlNAL DETERMINATION ~L,~ ~ETAI!_ED PLANTING PLAN -SOL'T'~ERN SECTION SHT 23 F THE EXACT LOCATION OF THE GREENWAY WILL BE MADE AT THE TIA4f OF SUBOMSION APPROVAL. 0 CONCENTRAT~N STORMS Will BE ATTENUATED IN ORDER 9. RUNOFF PROTECTION FOR THE 5 AND 10-YEAR TIME OF TO PROVIDE,FURTHER PROTECTION OF DOWNSTREAM PONDS. Y DETAILED PLANTING PLAN -NORTHERN SECTION SHT 24 10. PRIOR TO THE DEVELOPMENT OF THIS PROPERTY, THE EXISTING HISTORIC STRUCTURE (A SINGLEfAMILY HOME) Nllll BERELOCATED OFF-SITE BY THE OWNER. STORMWATER POND DESIGN DETAILS SHT 25 11. A PRIVATE RECREATION AREA WILL BE PROVIDED BY THE DEVELOPER ON OPEN SPACE ADJACENT TO THE STREAM BUFFEit. - ~ ~ T STORM DRAINAGE & EROSION CONTROL DETAILS SHT 26 SR j0 UTILITY DETAILS SHT 27 ~ ~~0 ~ ~ ~L ROADWAY DETAILS SHT 28 GREENWAY DETAILS SHT 29 GREENWAY TRAIL PROFILES SHT 30 ~ -N- PUMP STATION SITE PLAN PS-1 R - - - ~0 ~R~~ \ J _ ~ PUMP STATION SECTION VIEW PS-2 . ~ - PUMP STATION PLAN VIEW PS-3 ~ \ PUMP STATION SITE PLAN LAYOUT PS-4 \ ~ J CHEMICAL FEED SYSTEM BUILDING PS-5 ODOR CONTROL EQUIPMENT PS-6 ELECTRICAL DETAILS PS-7 ELECTRICAL DETAILS PS-8 ROPOSED ISTING P TION EX DESCRI P INTERMEDIATE CONTOUR INTERVAL P II I INDEX CONTOUR INTERVAL DEVELOPER/APPLICANT RIGHT OFWAY LIMITS - - ROADWAYCENTERLINE - - WINDJAM DEVELOPMENT GROUP CURB & GUTTER SANITARY SEWER FACILITIES -~5 ESS- -PSSt~- STORM SEWER FACILITIES RALEIGH, NC 27606 ~4V E N E L 1130 SITUS COURT, SUITE 250 WATERLINE - P"'` - FIRE HYDRANT ASSEMBLY E R S I S U R V E INEERS I PLANN S U R V E Y O R S TELEPHO XE~ O19)C534-17)5356-3320 ENG FENCING STRUCTURE -o - 4 fax: 919.467-60 111 MacKenan Drive Cary, North Carolina 27511 tel: 919.469 33 0 :919-467-6008 www.withersravenel.com ATTN: CRAIG GLA55 ~ SNNE ~Y~r'YY~\ N/A ~ ear WOOD fi Ait .c~l~. uAw ~ ~ WATERWAYS - - N/A +(j SILT FENCING NIA a7 d y$ 5 i1 SITE DATA TOWN OF CARP PROJECT # 04-SB-022 53,64 AC, TOTAL TRACT SIZE ZONING R-12 CU PIN'S O7b1.03-40-7898 0781.04-51-2650 TOTAL # PROPOSED LOTS 78 PROPOSED DENSITY 1,45 D,U,/AC. MAX. # LOTS ALLOWED 80 PROPOSED MIN. LOT SIZE 12,000 SF PROPOSED AVG, LOT SIZE 16,091 SF OPEN SPACE PROVIDED 18,21 AC. LF OF STREETS (PUBLIC) 5174 FL BUILDING SETBACKS; FROM THOROUGHFARE 50' FRONT 20' SIDE 10' CORNER SIDE 20' REAR 25' ADJACENT TO DUTCHMAN'S DOWNS 30' TOTAL LF GRAVITY SEWER 6735 LF 8" ON-SITE 5547 LF 14" ON-SITE 1188 LF TOTAL LF WATER MAIN 6" DIP 1490 LF 8" DIP 2570 LF 12" DIP 1160 LF TOTAL 5220 LF TOTAL LF 8' GREENWAY TRAIL 780 LF TOTAL LF 10' GREENWAY TRAIL 1250 LF TOTAL LF ROAD WIDENING 1090 LF (545 LF ON BOTH SIDES) g`~A I i~~ TOTAL ~ WATER VALVES 23 TOTAL # FIRE HYDRANTS 12 ~ TOTAL # SEWER MANHOLES 41 / IMPERVIOUS SURFACE 13.63 AC. (25.4%) IMPERVIOUS SURFACE TABULATION: STREETS 157,500 SF / MILLIANS, VIOIAEL 5 ! L0:1-W SIDEWALKS 24,140 SF o' I~,";,~;8`,T ' DEN HEIDER WA ~ PoWFIL, JAKS IFMS R AL p IJI 3n1 ~ ~ AD / (E%IST. 50 R/W, 20' EDGI DEN HEIDER WAY GREEWAY TRAILS 18,940 SF iT. So' R/w, 20' EDGE-EDGE) ~ PUMP STATION SITE 3240 SF . ~ ' ~ . AI ~ 21504-~ N P d LAUPoE N 0700.01 H 7721-000 SOACE. JOH . A-~ 5505 OEN NEIOER WAY LOTS 390,D00 SF (500D SF/LOT X 78 LOTS) AALEIW NC 27606-A560 OWULFZ, RICAROp A k PAfAICIA F 0707 O1 AI 9171-000 5433 DEN NCIOER WAY pAY150N, OANO SC071 d AI NE C R-b 0./17101 NC In06-8564 CNfM, OW CNI k CNINC NU 5115 OEN NFIOEA WAY ,N9 sc9n t sv NE c rAna7, RoeERr w ~ t NARr R 7rtus7 TOTAL IMPERVIOUS SURFACE 593,820 SF +El9u wAr s,be aEN xEl9EA wxr TOTAL SITE AREA 2,336,395 SF 3128 OEY MEOER WAY SOROE. JOIN P d UUgE 0701.03 11 4700-OW RKpp1 NC 27000-9584 RALEN]I NC 27609-9984 5305 pEM XBOER NAY R-10 0781.03 11 1969-000 0761.03 p 1789-000 27606-9094 RAIE19H NC 17606-0.5e1 au-~ mm.9s42s261-o0o TOTAL PERCENT IMPERVIOUS 25.4 i FpLTW, RICHARD f d SAAE E plEq, JEFF k LISA C RAlEIQ1 NC 27001-9700 R-40 ' ~ ~ r ~ ~ 351! DEx XEOEA WAY 3509 pEN XEIOEA WAY 0761.0! b 1818-000 1-10 A-,0 RAl71CH NC 17000-9580 RALEIOX NL I7000-8300 -10 PXlEq, YARN NOMESCAPE BUtONO COMPANY 0701,07 b 1377-000 0161.03 b 1088-000 5111 OEN HCI i R-b p-/p RALFIW NC PH9ER, NAAN P t IERE H 9ff(a yAY ~Y"TM01"s ScN9N OWNER DEVELOPER; WINDJAM DEVELOPMENT GROUP 9421 OEN HCIOEA WAY RAl(Y.x wC •(7,06,,,,,, / Runq+NC z76ae-s os6lm,RSSZ,_o~ 1130 SITUS COURT, SUITE 250 1013 YILLENS BAY Ci. NMA 0161.03 q N APf%NC 27531-Sla _ _ - - ,~..~.!Ti~. RIV 9no+15311 E----, 7 ~ r--- TE LANDS "'`'F. A-b 97x1.97 a 49e7.9oo 6.40 ror LDT RALEIGH, NC 27606 R-,9 R!0 ~ 47; C ~ ~ 1 f ~ - ~ PRN I N I I I I a r/ A V I I ~ ~ l ~ l ~ l H ~ ,~I f l ~ 1 2--=ATE IAND,~C 2_PRNATE LAND,S~CAP F,~MT,__ .~'r ATTN. CRAIG GLASS I f l l 01 1 1 I I I I I I I I I I I I / I I i t I r -l f Q, \ y. / to/ II II II II I ~ ~ I I 1 L___ B I I I I I I I I ~ i i I 30 GREENWAY k - ~ : ~ ~ PH; 919_ 256_ 3320 I ~ ~ i J I m ~ sA~ taRr sEwER EsMk , ; , , . FAX: 919 534 1753 ( 'ti ~ ~ (rJ i t I ~ : ~ I I W I I I I N I I 1 I ~ ~ 1 1 I I I I I I I I I I I I ~ I ~ I N I I I I I I I l I I 1 I I I I I O ~•,y!* II ~ I v ~ ~ \ N\~ I I I I I I I I I I I I I I I I l~ I I I 3D' G ENWAY I 11 I I _ J L___J ~ _ ,__J L____J 1 II I II l ^ L---- L-- ----a i ~ wArWNS1u7Dwpwc __LI _ / t \ _ _ ~ A, ~ S4NIT~ ~€W€ 1011 YLLEN$ BAY Ci, L - r - ~ , • , / \ \ ~ ~ ~ NOTES: IPE11 NC In,W-61W ~ / ~ ~ i - 07R0/97350 ~ l / 1 . ~ ~~~Yw~AN,IANNRJItEILE 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CURRENT TOWN OF . 9212 IflOEN LN I - - -1 ---1 r-- --r r--, r-- I I ~ f-___~ ~ ~ U1 I I I I I I~ ` I ~ i t ~ N I I I I N ~ I I I I I I 1 1 ~ ~,I r--, - RAtFi9HN9 27696-9967 CARP STANDARD SPECIFICIATIONS AND DETAILS, I I I I N I I N ~ ~ mm.97 42 mn-999 I ~ I / ,'1 1 I I I I ° I I U I I LR I I N I I ~ ~ 1 ~ U11 I I In I ( N I I lA ~ J l 1 ~ ~ (P I Ci) I I v l l ~ I f0 ~ ~ pl J I ~ L----~ J h. I I I I N k ~ 6.40 . ~ I I I i i _ , I, 2. LAYOUT SHOWN IS FROM PRELIMINARY LAYOUT BY ELAM, TODD xfLSa+,waaAenY V ~ / •w'•' :~~~n ~ li A ~ I I ~ I ~ I I I I I E~~~ ~ r•---~ ~ I I 4eawu.FWSeArcr ~ ~ / .;`R`", G~. / r,~ ~ 1 N \ ~ I I I r ~ \ ~ ~ I \ i \ ~ ~ 1:) D AMBROSI AND WITHERS &RAVENEL, INC. ~ Ii v i. ~ v v 1 (v+ A~ I I A~ I N ~ I I _ y APaNCnaw-314 v I r y: i I I (r 1 1 ~ \ I I I I ~ _ f~ \ v W v ~ ~ ~ ) onalm ~ f ~ :'0:~' ~ fA I I ~ 1 V I I I N I - V CA \ v ~ 1 ~ ~ i„ J \ / \ ~ ~ ~ / VAUGHAN, IRNN R t EIIFEN 0 ~ . 3. EXISTING TOPOGRAPHY SHOWN IS FROM PRELIMINARY SURVEY A-s0 I I 6T / ~'~h,.' (P I I I S I I I I I~ I r-- ~ ~ ~ I W I / i ~ ! L----~ rn I ~ ~ ~ , ~ ~ i i ' \ ~ : • ' ~ ~ . ~ RAlEN91 NC 77606-9967 ~ j). ~ ~i0S1z0,,,_~ BY WITHERS &RAVENEL, .INC. O: P N--- - r------I [n n ~ \ 1 , i N / . ST:~ MV I I _ , v ~ , ;~r N i.;ST~ MWAT~R,'~~,;;; :~'~U ~~r'' ~ 4. WETLANDS SHOWN ARE FROM DELINEATION BY ROBERT J. GOLDSTEIN & .1 MAPLES, NANCY J d O1NY R ApIEY / ~ O1 \ \ ~ . ~ N 1V Ilv,wcpcxLU1E `I / ~ ~ V I'.• \ - ~ ~ ASSOCIATES, INC. AND MAPPED BY WITHERS &RAVENEL, INC. 1 101111 OII~I a i NC 17639-6n1 JWES RQULD p k LnW AWE ~ D ~ ~ w . ~ ~,r . ` \ 10101 altl 1116 /M r IF a 1962 sulm, LeuLS w k AYXA 3aoo vAN COW w[ r _ _ _ _ _ ~ _ _ ~ r ~ I : ~'~::r' : ' "~M' ~ f.::.:. N1 au f- 3008 NAx COW LAME MER NC 27339-0n1 1 / \ 5/x t17e1 s 1 -aop ADEN Nc 27531-sn1 m6150123e I A I ~ - I N / ~ \ ~0:. ~ ~ ~ - NOK I7101~ I R-pLX I V I OI \ / / W \ ~ n / •:,t~;~~.•, ::..:.:~:'".•.:.,•:::.1 RODEm4,1RleAtlIICN 5. THE DEVELOPER WILL BE RESPONSIBLE FOR ALL INSTALLATION COSTS r--~ :-fie ::ca• 6aobenauu9n ASSOCIATED WITH STREET LIGHTING ALONG PROPOSED STREETS, ADJACENT / s k~Ob ~ if-ko1R pn smov I I ~ \ ~ I i / Lp \ ~ , "i ~ I 11 - -100 I ~ L _ ,i k. E~ . ~ l; RAlENI1 NC nea-n71 ~ N ~ • • ;I; STREETS AND THOROUGHFARES AS REQUIRED PER TOWN OF CARP ' '•~'•°•'X•'•" • I R-'° POLICY STATEMENT N0. 13, THE DEVELOPER SHALL CONTACT CAROLINA i i N \ ,;,;~{~.J;i;' ::I POWER AND LIGHT COMPANY AFTER PLAN APPROVAL AND PRIOR TO v' ~ ' ~ I i `0 ' ~ ~"'°f;'"' ~ ~I CONSTRUCTION IN ORDER TO DEVELOP A STREET LIGHTING PLAN FOR THE ~ 1 ~ y:~' ~ V~ r--~ r r r ~ r--- - \ STORM:WgTEFt,:': ~ I ~ ~ r---~ r- II I . SITE SUBDIVISION PLANS. C .~1 / I ~ ~ ~ . y3. _ A I \ Il 1 O ,1:~...•. • . , ( { NATME9a4w~Nwxtsxa+9 ` 6. ALL SIGHT TRIANGLES OUTSIDE OF THE STREET RIGHT-OF-WAY SHALL BE N I I ~ 1 Q- W _p BOC G d ,P'J- I vw cpcx uwE ~ I I I I I i t I I I I 1 1 _ • / Np m31-m4 I I I I i I I I 1~ \ ~ • • RA619H N0 =7696 977, ~ RECORDED A I HT DISTANCE EASEMENTS ON THE SUBDIVISION PLAT AND ARE m SSG F ~ ~ ' D7fi1,W 92 7891-900 x ~ ~y~ 1804412 L.~--~ ~ L_____~' ` _ ION --'f P~IVA7~ ~S`ZA~E-E T--- T:-r+~;.+`~T~-~ j; I R-,9 ~ SUBJECT TO USE RESTRICTIONS IN THOSE AREAS. V A om SM0.ETART, ROBERI C 0 LISA M , fNIM . BII7 Nf01ENW1D5 W POW[lL. MAM flAlIXi1 NL 27908-9605 LLWi, MICMALL C d A XE F PDWY, YOAI65 FONIEST d OR111A B LOYBARO, JOWNNE$ 5 k SWJA ba IEM lw W' 0161.4 50 5555-000 6103 NEINERUN05 Oq 8213 NFiNERUYDS W 8111 NETIERVN05 W A 7. SIGNAGE IS A SEPARATE APPROVAL PROCESS AND HAS NOT BEEN REVIEWED 5,16 ANSIIRDAYw0. f~ OR APPROVED AS A PART OF THIS DEVELOPMENT PLAN. RP15WN NC 27006-9850 AP[T YC 17505 -p ALCNp1 NC 17606-99 R,~ICILY NC I78p6-B6 NASPfA, PfER l k MN+Y f D7/0.01 0171-OW 07BI.Ot 50 580D-000 0761.4 51 5180-OOD R76wa 57 5331-p00 Sys NEI1ERUx09 M i t Marc E RAIEWI xc em96-979e ~ a9s 9R 97s1.o, s2 atu-a99 yp6,,, ~ 9Aw9 k uli ~ pp \ -bN A-/0 R-b AAM:IOX NC 77008-9859 0761.4 91 9771-000 R-b 7e0°-9°g' A-'°W ens~ouN9R ~ 8. ALL ABOVE GROUND UTILITY EQUIPMENT AND FACILITIES ASSOCIATED WITH '2-ppp RAIFICH xC 27696-9729 m' 7CXELW, IUN O k l ETiF M \ 07 IF7NCRLAN05 OR ASON, UW7f11C[ F 5 d DW NC 27800-98 Y NC, JASW E d SNA A ARY JO NASON 6761,946706„_600 ~ ON-SITE ELECTRIC, CABLE, TELEPHONE, GAS OR SIMILAR SHALL BE LOCATED A-10 IN THE SIDE OF REAR YARD AREA OF THE SITE AND SCREENED, TO THE 0781.4 50 5713-000 809 NE7NEAlPN05 OR 17 NERIFIkAN05 OR _10 R EN11 NC 27AOB-9658 uEIW NC 17808-985 EXTENT POSSIBLE, WITH EVERGREEN PLANTINGS, PLANTINGS SHALL ALLOW \ qNt, EDWN Y k OOL07HY L 61.4 5t 5084000 7kl.a 31 5381-000 i 011! xERfERUN05 OR 40 -b \ pALEMJI NC 1]008-9805 FOR A MINIMUM OF 5' CLEARANCE AROUND THE STRUCTURE TO ALLOW FOR 0701.4 30 0179-000 R-b ACCESS. ADDITIONALLY, ANY .SIDE OF THE STRUCTURE HAVING A DOOR OR LOCK, THE PLANTINGS SHALL ALLOW FORA 10' CLEARANCE. THE AMOUNT \ NETHERLANDS DRIVE (E%I5T. 60' R/W, 20' EDGE-EDGE) OF CLEARANCE SHALL ACCOUNT FOR THE SIZE OF THE PLANT MATERIAL AT MATURITY, PEACOOL, ASEDX T 37 d 9. NO TREE SHALL BE LOCATED WITHIN THE RIGHT-OF-WAY OR WITHIN 5' CATIERME 5 \ 8109 N7INFRLANDS DR RALL19N NC 2n06-9009 OF A SIDEWALK, \ onl.a so 9seo-ooo A-b 10. TWO BENCHES WITH CONCRETE PADS AND ONE TRASH RECEPTACLE WILL BE REQUIRED TO BE INSTALLED BY THE DEVELOPER ALONG THE GREENWAY TRAIL. THE LOCATIONS WILL BE SITED BY TOWN OF GARY PARKS & RECREATION J DEPARTMENT. PLEASE CONTACT JOE GODFREY AT 462-3863 TO REVIEW TRAIL ALIGNMENT PRIOR TO PAVING AND SITING THE BENCH LOCATIONS, 11. A REQUEST FOR A DEVELOPER AGREEMENT BETWEEN THE DEVELOPER AND THE TOWN OF CARY MUST BE SUBMITTED FOR THE TEN-TEN ROAD WIDENING PORTION OF THIS PROJECT. THIS REQUEST MUST BE SUBMITTED TO THE TOWN OF CARY PRIOR TO BIDDING OF THE ROAD WIDENING PROJECT OR THE DEVELOPER FORFEITS THEIR REQUEST FOR A DEVELOPER AGREEMENT. d• ~ti~i ~l S~ ti . 9~ ~ ~o .a . SEAI . 23484 a .t ~N•; . ~ c~ s I "4p w.. ~P•.• BEY 0' ah aN /2 /G o GRID NoRrH (NAD's3) ALL CONSTRUCTION SHALL BE PB 160, PG 63 IN ACCORDANCE WITH GRAPHIC SCALE CURRENT TOWN OF CARY zoo o ,oo zoo aoo STANDARDS AND G R SPECIFICATIONS, h I inch = 200 it. e a No. Revision Date B Designer Scale Sheet No. 1. PER TOC 1ST REVIEW 10/23/04 BDH W&R =zi)a WITHERS R"ENEL OVERALL SUBDIVISION PLAN ENGINEERS I PLANNERS I SURVEYORS 2. PER TOC 2ND REVIEW 12/6/04 BDH Drawn By Date GREYHAWK SUBDIVISION OVE 7 Al 4-7-04 a Checked By lob No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com WAKE COUNTY CARY NORTH CAROLINA BW 204028.00 i /I ~ ~ o° I/ / SORGE, JOHN P & LAURIE K \ I I I 5505 DEN HEIDER WAY RALEIGH NC 27606-9560 \ \ ~ ~ / / , ~ ~I Q 0761.03 41 4111-000 i / I / ( / I / R-40 GONZALEZ, RICARDO A & PATRICIA F 5433 DEN HEIDER WAY I ~ / l RALEIGH NC 276D6-9584 ~ ~ / POWELL, JAMES LEWIS ET AL j/ ~ GRID NORTH NAD'I 0761.03 41 4308-000 ID NORTH (NAD'83) SORGE, JOHN P & LAURIE K R-40 / ~ 3724 TEN TEN RD APEX NC ,P ~ i ~ 27502-7181 / PB 160, PG 63 / a - / / PB 160, PG 63 5505 DEN HEIDER WAY HOMESCAPE B ILDING (`r~MPANY 0760.01 49 3721 000 / ~ v , RALEIGH NC 27606-9560 ~ ~ 4813 MILLENS BAY ~J.~ R-30 ~ 7 I/ S ~ FULTON, RICHARD E & JANE APEX NC~275 9 5194 ~ / / E 5513 DEN HEIDER WAY 0761.03 40 4846-000 ~ RIDER, JEFF & LISA C R-40 i ;1 0760495361 ~ / ~ ~ ~ i RALEIGH NC 27606-9560 5509 DEN HEIDER WAY I R-30 , ~ / ~ / \ ~ ~ 0761.03 40 4373-000 - / I I / A / R-40 RALEIGH NC 27606-9560 ~ I 0761.03 40 4688-000 ~ II / ~ I V ~ ~ / ~ - R-40 ~ , - I i Jm ~ , A Iv - m n / I I I / ~ UI / m I ~ ~ ,I / ( / I 1 1 ~ 1 \I ~ ~ , - r I yr-J ~ 1 1 I p l 650,52' p ~ N06'35 14 E / / ~ 1660.37 ~s ~ N002113E i /i ~~i o . / ~ ~ ~ ~ I l ~ ~ ~ ~ -f i / / ~ ~ / I ~ ' - - _ y I l l I ~ ~s ~ S I A / / / 39 AN T Rl~ SEWER & / / 1 ~ ; / ~ - 1 1 ~ - ~ ~ I I 1 r , ~r ~ / ti'° rv I W ~ ~ ~ ~DRAINA i / ~ ~ - r - ~ v / / ~ ~ ~ I ~ ~~I ~ / O ~~Jp ~ 1~ ~ ~ ° / / ~ / ~ ~ v ~-45pvv v ~ ~ ~ 72~ , / 71 / / ~ ~ / ~ ~ ~ v N O 1 ~1 ~ I ~ I ~ 1~ Z~ Z '1 \ / ~ ~ VARIA~E W( / 69 ~ \ N ~ ~ 1 - i I 1 ~ O CO ~ ~ I ~ / ~ ~ ~ C7 ~ ~ , ' ~ ~ 1'~ CD ~ / i / / ~ / tiff' ~ ~ ~ \ \ ~ ~ ~ / DRAINAG~ E,S / 70 ~ ~ v ~ / \ ~ ~ D J , HA~CH~D RED EPIj~ES~NT ~ P ~ r~~N .I I N a / / ~ / I l ~ z ~ l a~~ i / 11 d0-YR EAaWA ER EL~V, ~ ~ C) ~ ' ~ ' tv ~ p ~ y, ~ ~ ~ 1 ~ 10 / OF43,17 ~ I A .z z~, ;41 z l ~ , ~ I ~ ~_w~n ~ ~ ~ ~ i1 ~ I I I r~ • ~ . N ~ ~ / / , / ~ l I ~ f , ~ I ~ \I~\ / / ~ I 00 \ ~ ~ I / ~ ~ ~ L / ~ r. / ~ ~ ~ ~ / ~ ~ / ~ ~ i / , I I I I I ' I I ~I I i I ~ ~ ~ / C o ~ ~ N I ~ ~ I W ~ ~a ,01N ~ I ~ ~ V I ~ N ~ ~ / / I ~ \ / ~ / / 2 \ \ ~ \ ~ WATKINS BUILD~I G INC o D7 / / / _ ~ w ~ ~ -f- E 4817 MILLENS AY CT. / ~ /j / / ' ~ / / ~ ~ ~ ~ \ I APEX NC 2753 194 l / ~ 0760497350 $ V ~ f o~ / ~ 1s~,~o ` is+. a . ~1 ` as+. o ! - ~ iz+oo ~s+ o ~ ;y i9+oa ~ zo, ~p ! z~+oo _ / zz ` a+ o ~ 2a~ ~3fioo ' / _ 0o N / 78 - °d ~ / i~ >a' / ~ /e ~ ~ v oc~ / / / Z ,r p~ iA / ~ off. : .1: , . / 5 I ~ V. qq ~ l ~ l / ? ~ / w I ~ ~ I / / q 1 W I ~ ~ ~ w ~ ~ ~ ~ ~ ~ I 1 1 / ( Z4 i / I / / w~ Y,. / ~ A ~ ~ ~ ~ I ~ ~ / i ~ / ~ ~ 20 `pRAINAG~ I / / / ~ x~ 1 / / / I ~ ~ 4 / / / ~ EASEN4~NT V ~ ~ w ~ a~~ ~ / i ~ ~ i 50 / / / / / ~ ' d 1 ~ V A ~ ~ i t I I ~ d o ~ ~ ~ ~ / ~ / ~ V 1 2 ~ ~ ~ ~ ~ ~ ~ A ~ ~ o. ~ ~ ~ i a~~. i v y- v ~ v i ~ o ~ / ~ ~ ~ / ~ S A 36 ~ ~ 1 2 ~ I y ~ I ~ ~ d i i ~ ~ d i / ~ i 58 / ~ \ V 1 4•~ ~ 2 1 ~ ; i / ~ ~ / l L \ ~ 1 ~ O~ f ~7 / °D 52 ~ I ~ / / I ~ 1 / ~ I ' 1 51 / - / \ ~ l 0, 1 / ~ ~ i / l ~ \ \ ~ ~ ~ 0 1 / 1 / ~ i 1, A ~ ~ ~ 'l, ~ ~ ( I / I Y o \ I 4sp ~ I ~ / i' / ~ ~ ~i ~ 1 ~o\ y2 F 1 l l ~ ~ ~ ~ ~ \ o. ~ NELSON, MARK J 1/ ~ ~ ~ A ~ / I / 4821 MILLENS B Y C~ 8 ~ ~ ~ = ~ A \ I / ; I / ~ ~ ~ / ~o ~ ao 1 A ' cb ~ ~ ~ ~ ~ ~ ~ I 1 1 ~ ~ 1 APEX NC 27539 51;94 I ~ 2~ / ~ l ~ ~ ~ ~ ~ ~ 1 1 ~ l ~ 0 1,~ A CI7 ~ ~ - / ~ 1 \ ~ 2 , , ~ 0760499227 ~ - ~ ~ ~ I ~ ~ / ~ I , ~ - 53 ~ / R-30 ~ Q - - ~ ~ / i 1 ~ l r l ~ ~ ~ 1 1 a F ~ 1 75 v4s ~ ~ / ~ ~ ~ ~ ~ - ' ~ - 1 l 49 / ~ I / I ~ ~ ~ ~ ~ 1 ; ~ ; ~ I I ~ - D 55~ I I v 55 ~ ~ ~ D I D i _ 60) ~ 1 I ~ , 76 ~ vv ~ ~ J l f ~ ~ / N ~ ~ ~ ~ I ~ / / ~ ~ / ~ ~ I I ( ~ / i s / 6 , , ~ ~ l~ I ~ I ~ ~ i i~~ I v I l ~ 1 v ~I I /1 / ~ ~ ~i G I 1 ~ 1 ~ ~ i r ~ l ~ ~ ~ I I ~ I ~ ~v I 1 ~ ~ l ~ I ~ 'i ~ ~ ~ ~ 20 Cn ~ ~ I I / / ~ ~ ~ / I I ~ I I , m 30 ANITA~tY SEWER & i ~ , I ~ ~ - I ~ I• , / ~ DR AGE~ESMT./ _ C-5 ~ I i ~ I ~ 1 i i ~ w w ~ ' - , ~ i / % / / I ~ ~ / I ~ ~ ~ I C~~ w ~ 1 p ~ j ~ I m Z ~ • ~ \ ~ 5~ S00' 11 06 W ~ _ _ ~ ~ 1 ~ I / I I I I oZO ~ ~ _ ~ m ,5i I ~ ~ 1 r - ( _ca-_ -ti^ 38 ~ I I I I I ~ ~ t 1 ~ -1 r m ti 61 _ gti~ x I ~ . I I ~ SAO _m ~ ~ N m N ~LK V I I I I 1 48 \ ~ ~ ~ , _ o-a~ - - - I I ~ -D ~ m O ~ g+N~p~ oa m I I 1 V ~ ~ O' ( _ 1 I ~ I A ~ b4 + \ a ~ 1. Z ~oI / L~ POWELL, WILLIAM M JR I \ ~ 4004 TEN TEN RD / ao I ~ I I 1 ~ 8 A \ - ~ ~ I 1 I \ ~7 \ ~ a ~ 1 -L o APEX NC 27502 / c4 oz`s NAPLES, NANCY J &TIIvIOTHY R 0760,02 59 1570 000 REMLEY 3012 VAN GOGH LANE SMITH, LOUIS W & ANNA M JONES, RONALD G & LEIGH ANNE ~ ~ R-40W / s ^ / APEX NC 21539-5774 3008 VAN GOGH LANE 3000 VAN GOGH LANE z e \ 7 1 _ w / 0 6059 982 APEX NC 27539-5774 APEX NC 27539 5774 ~ ~ ~ ~ ~ ear ~ ~ ~ ~ / ~ -40W 0161501047 00 1 \ 0761501238 J ~ R-40W R-40W ~ ~ HATCHED AREA, IS STOP AT~R / .°p / / / ~ ~ \ ~ ~ I ~ r . - NT CE SMT, ~ I 1 , ~ ~ ~ ~ ~ I 1 - ~ 6~ S 39 ~ ~ 1 / / , 1 1 ~ ~ I ~ ~ } ` ~ I ~ ~ °j ~ i 1 ~ ~ `~1 I I ~ 20 ~DRAIt~' GE `'0 1 ~-I' - POWE ,JAMES LEWIS TRUSTE ETAL / q STORM DRAINAGE CHART I 24 TEN TEN RD / ! & / 1 1 A 1 ~ SEMENT D I ~ m / Pipe Flowing Pipe Pipe I APEX NC 27502-7181 / I I o I ~ ~ 0 1 ~ ~ 1 I I ~ 4760.02 58 4553-000 f / 1 Upetreom Drainage Discharge Full Dameter Length Pipe _ _ I / / / Rim Inlet Areo Q1D Capocity D L Upper Inv, lower Inv, SI e _ - - - _ I I 1 ~ 68 ~ ~ ~ ~ \ N I - \ I ~ 1 ~ '':-I ~ \ \ _ ~ ' _ - 1 \ 1 ~ 63 J ~ ~ 1 I Z G~ ~ A \ I R-30 From To IMP at wPo) C (ac) (c1s) (cfe) (in) (ft) Ekvotion Elevation (X~ _ - _ - - _ J ~ ' ' CB-1 CB-2 CB-1 452.46 0.62 0.29 1.30 11.37 15" 42 447.80 446.50 3.10 ~ - - - _ m; \ I ~ \ \ l ~ 1 I rn A \ ~ \ I I I CB-2 CB-3 CB-2 451.02 0.62 0.60 3.58 5.56 15" 27 44630 446.10 0.74 ~ , ~'i \ T- ~ ~8 .a,;. ~ ~ I 11 I I I I j i ~ I ~ ~ ~ ~ 'I I I 1` CB-3 CB-3A CB-3 451.02 0.75 1,01 4.71 13,16 15° 135 44590 440.30 4.15 23+00 22+00 2i+04 \ xe` I I~ I; V I I I-~ ~i+oo ~o+oo I a oo +;ao 1 ~ ~ I I I ~@~ ~ I ( I I CB-3A FES-3B CB-3A 444.05 OJp 1.27 6.62 11.09 15" B6 440.20 439.30 1.05 / ~ / ~j \ \ w a I 1}~k00 M1.6~fP n, I Vf ~ w w _w o ~ ~ y l l l I \ ~ I CB-4 CB-5 CB-4 460.10 0.75 0.12 0,65 4.92 15° 60 455.70 455.30 0,58 ~ - i ~ CB-5 CB-6 CB-5 459.75 0.85 0.26 1.51 7.59 15" 58 455.20 454.40 1,38 / ~ ~ - ~ I ~ : I I . . , . I , ~ ~ ~I I I I . . CB-6 CB-7 CB-6 458.40 0.90 0,34 2.03 10.52 15" 151 454,30 450.30 2.65 ~ ~ / / I ~ 1 I I I I I I 1 ~ I I I I I I ~ / CB-7 FES-8 CB-7 454.35 0.90 0.52 3.20 5.33 15" 44 450.20 449.90 0.68 / l \ I m 1 ~ 1 ~ I I~ I I I ~ ~ / I 1 1 I 1 I ~ ~ 1 I 1 1 `.I I I`~ I I I 1 ~ N ~ J CB-9 CB-10 CB-9 453.43 0.75 0.18 0.97 14.44 15" 132 449.00 442.40 5.00 / ~ I I 1 1 \ I ~ ~ I I ~ I I l I 1 I / 1 1 I OUTLET PROTECTION SUMMARY CB-10 CB-11 CB-10 446,83 0.80 1.96 6,89 8.34 15" 45 439,50 438.75 1.67 ~ ~ ~ 1 1 1 \ 1 I I ~ I I I I~~ I I I ~ / I I ( 1 1 I ~I \ I I ~ IV I I ,I l l\ I ~ j 1 1 I ~ I 1 t I I~ I I I I I I ~ CB-11 CB-12 CB-11 442.98 0.60 2.07 7.37 12.84 15' 129 438,60 433.50 3.95 W ~ I \ I I I I I I 1 l~ I I I ~I I I I 1 F -3 FES-8 FES-21 CB-12 CB-13 C8-12 437,96 0.50 2,67 9.53 12.64 18" 76 433.10 432.00 1.45 v ES „ CB-13 CB-13A CB-13 436.72 0.43 3,80 13.04 16,61 18" 8 431.90 431.70 2.50 / ~ 1 ~ I ~ I I I I I~ I I I C I I I I i~ I ~ ~ ~ I I I I I ~ I I I ~I I I I I~ C' 45 ~ l I I I ~ I I ~I 1~1 1 ICI 8'LX8'WX22 D 5'LX1'WX9°p 30'LX34'WX22°D - IP-RAP W CLASS 2 RIP-RAP W CB-13A CB-14 CB-13A 436.72 0.43 5.38 18.35 21.82 24° 27 431.20 430.95 0.93 ~ CLASS B RIP RAP W/ CLASS A R / / _ 7 4 1 7 70 LINNEY, ERIC G & SANDRA J \ ~ ~ ~ / I / I ~ / I I I 4Q I I~ ~l I ~I FABRIC LINER FABRIC LINER FABRIC LINER CB-14 YI-15 CB 14 436.72 0.65 5.63 19.52 59,94 24' 129 430 5 2 . 0 2 3001 VAN GOGH LANE ~ 4h / ~ ~4 ( 43~ I 142 ~ ~ / I I I i 1 ~ I ~ ~ 1 ~ ~ \ I / \ / / / ~ _ - I 1~ I d50=6" d50=3" d50=23" YI-15 CB-16 YI-15 425.50 0.50 5,95 20.68 35.55 24" 97 421.80 419.30 2.47 V10=9.08 FPS V10=4,54 FP5 V10=19.66 FPS CB-16 CB-17 CB-i6 424.30 0.59 6,58 23.36 27.05 24" 49 419.10 418.40 1.43 APEX NC 27539-5774 I I~ ~ / l / / l I--- ~ ~ 1 I / ~ ~ I ~ ~ I , ~ `f .I CB-17 YI-18A CB-17 425.60 0.67 6.92 25.10 45.19 24" 138 418.20 412.70 3.99 0761504302 ~ I A ~ ~ ~ ~ ~ I ° / P 1 / YI-18A CB-18 YI-18A 417.00 0.49 8,92 32.17 36.45 30" 101 412.20 411.40 0.79 R-40W FES-37 FES-40 FES-44 ~ CB-18 CB-19 CB-18 418.29 0.70 9.00 32.58 38.26 30'~ 126 410.90 409.80 0.87 \ ~ ~ ~ ~ ~ ~ ~ ORMWATER MGMT. - I ~ I I ~ I / 7 ~ ~ ~ ~ 5'LXTWX9"D 8'LX10'WX22"D 16'LX18'WX22"0 CB-19 CB-20 CB-19 415.33 0.51 1206 45.50 57.37 36" 27 409.10 408.90 0.74 \ ti / OND~1 _ - ~ ( l ~ i / o ~ ~ - I CLASS ARIP-RAP W/ CIASS B RIP-RAP W/ CLASS BRIP-RAP W/ CB-20 FES-21 CB-20 415.33 0.70 12,53 47.88 158.67 36" 83 408.70 404.00 5.66 FABRIC LINER FABRIC LINER FABRIC LINER 1 1 l ~ ~ ~ ~ i ~ l ~ EE DETAIL ON SIB: 2-5.- I ~ 1 I I, ~1 ~ I ~ ~ ~ r ~ ~ ~ ~ ~ I Iv. I I h1-1`g I T I 1 d50=3" d50=6" d50=13" YI-22 CB-23 YI-22 443.50 0.45 1.28 4.16 4.83 15° 161 441.30 440.10 0.56 V10=3.98 FPS V10=12.07 FP5 V10=12.63 FP5 CB-23 CB-10 CB-23 445.54 0.75 1.70 6,43 6,71 15" 37 440.00 439.60 1.08 ~ ~ ~ I _ - C8-24 CB-13A C8-24 437.63 0.55 0,46 1.83 8.35 15° 72 433.20 432.00 1.67 CB-25 CB-26 CB-25 431,78 0.75 0.19 1.03 5.56 t5° 27 427.35 427.15 0.74 FES-34 FES-31 (INLET PROTECTION) CB-26 CB-17 C8-26 431.78 0.65 0.27 1.40 11.88 15" 133 425.60 421.10 3.38 28'LX12'WX22"D 15'LX12'WX22"D CB-27 CB-28 CB-27 425.54 0.60 1.41 6,11 6.36 15° 31 421.20 420.90 0.97 ,~~,~,Ne1pq,~b CLA55 B RIP-RAP W/ CLASS BRIP-RAP W/ CB-28 C8-29 CB-28 426.25 0.80 1.61 7,27 8.57 15° 119 420.70 418.60 1.76 . ~N CARO y. SINGLETARY, ROBERT G & LISA M ~ GILLIAM, MICHAEL E & ANNE F FABRIC LINER FABRIC LINER CB-29 CB-30 CB-29 422.97 0.70 1,78 8,12 10.85 15" 181 418,30 41320 2,82 d50=13" d50=13" CB-30 C8-19 CB-30 417.90 0.55 2,08 9.32 13,65 18" 118 412,90 41090 1.69 PURDY, MORRIS FORREST & DONNA t'~F.SS~D 9 8117 NETHERLANDS DR RALEIGH ~ ~ N E 8205 NETHERLANDS DR 8213 NETHERLANDS DR RALEIGH NCB y • ; V10=1360 FPS NC 27606-9605 BATCHELOR, ALAN D & LYNETTE M RALEIGH NC 27606-9659 ~ ~ t FES-31 C8-32 - 0.40 13.48 38.93 73.93 42'~ 37 409.00 408.80 0.54 \ 0761.04 50 5535-000 NTH RLANDS DR RALEIGH YOUNG, JASON E & SHANNON R 27606-9659 ~ SEAS g 8201 E E 0761.04 50 5899-000 I H 0761.04 51 5188 000 R-40 NC 27606-9659 R-40 8209 NETHERLANDS DR RALE G ~ 284 ; CB-32 CB-33 CB-32 416.37 0.80 13.76 40.55 86.54 42" 27 408.10 408 5D 0.74 CB-33 FES-34 CB-33 416,37 0,75 14,02 41.96 153,57 42'~ 60 408.00 406.60 2,33 \ NC 27606 9659 R-40 0761,04 50 5773-000 _ • ,t~~~ ~ 0761.04 51 5084 000 . a~ R-40 _ S `n(i R 40 • I~•' - - CB-35 421,04 0.70 0,20 1.01 5,56 15" 27 416.90 41670 0,74 CB 35 CB 36 P 1 eY o CB-36 FES-31 CB-36 42104 0.80 0.32 1.70 5,56 15" 27 416,60 416,40 0.74 \ NN, „N • YI-41A CB-41 YI-41A 41150 0.42 3,79 11,49 22,77 18° 134 408.00 401.70 4,70 _ ~ I i CB-41 CB-42 CB-41 406.14 0.48 5.13 16.13 17.26 18" 37 401.60 400.60 2.70 CB-42 YI-43 CB-42 405.36 0.15 6.01 19.78 22.58 18" 143 39810 39150 4.62 r2 r6 0~ YI-43 JB-44 YI-43 395.00 0.50 6.21 20.50 - 24"* 118 391.00 388.70 1.95 JB-44 FES-45 JB-44 400.00 0.50 6.21 20.50 - 24"~ 87 388,50 386,10 2,16 CB-47 CB-42 CB-47 402.92 0.50 0.62 2.24 4.88 15" 106 398.90 398.30 0.57 KING, EDWIN M ALL CONSTRUCTION SHALL BE KING, EDWIN M & DOROTHY L - 9 FES-40 CB-39 411.30 0.73 069 4.69 14,44 15° 82 407,10 403.00 5,00 8113 NETHERLAI CB 3 RALEIGH NC 2' a113 NETHERLANDS DR GRAPHIC SCALE IN ACCORDANCE WITH RALEIGH NC 27606-9605 0761.04 50 647 so o so so 1zo CURRENT TOWN OF CARY 0761.04 50 6479-000 a_an a_an STAN>7ARnS ANn NOTES4 1. ALL PIPE SHALL BE CLASS III RCP UNLESS OTHERWISE NOTED. I inch = 60 ft. SPECIFICATIONS. u 2 SHOWN IN PIPE SIZE COLUMN DENOTES 0-RING GASKET PIPE SHALL BE USED. w d No. Revision Date B Designer W&R Scale 1n=60 Sheet No. ~ 1. PER TOC 1ST REVIEW 10/23/04 BDH Drawn By Date GRA GRADING & STORM DRAINAGE WITHERS 6r RAVENEL SOUTHERN SECTION ENGINEERS I PLANNERS i SURVEYORS 7 AL 4-7-04 GREYHAWK SUBDIVISION $ Checked By Job No. s B W 204028.00 WAKE COUNTY CARY NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com $ ii i ~ vv~ L V L.V \JL LV\JI_~ I I ~ ~ i I ~ ~ ~ ~ ~ ~ ~ ~ I ~ ~ 1 ~ ~ SORGE, JOHN P ~ LAURIE K GONZALEZ, RI AROO A & PATRICIA F TAYLOR, ROBERT W JR & MARY R JR & MARY R TRUST ~ 5505 DEN HEIDE WAY 5433 DEN HEI E'R WAY DA1flSON, DAVID SCOTT & SUZANNE C ~ 5425 DEN HEIDER WAY 5409 DEN HEIDER WAY RALEIGH NC 2 606-9560 RALEIGH NC 26\06-9584 VAY ~ \ -9584 ~ ~ 41 430-000 RALEIGH NC 27606-9584 RALEIGH NC 27606-9584 0761,03 41 411 -000 0761,03 \ 0761,03 41 4789-000 R-40 0761.03 42 5201 000 00 ~ ~ ~ ~ R-40 I \ R-40 R-40 I 11 I 11 ~ ~ ~ ~ I ~1 ~ \ / 11 CHEN, DON CHI & CHING HUI / I 5429 DEN HEIDER WAY SIGMON, GREGORY L & BETSY A THOMAS SIGMON \ ~ \ 5405 DEN HEIDER WAY ~ \ I RALEIGH NC 27606-9584 RALEIGH NC 27606-9584 ~ \ ~ i I I 0761,03 41 4569-000 PHIFER, MARK P & TERESA ( J I R-40 M 5421 DEN HEIDER WAY 0761.03 42 5424-000 R-40 \ \ / / RALEIGH NC 27606-9584 \ ` _ _ _ _ _ _ _ =-t~AT~ktEl1 AREA REPRESENTS 0761.03 41 4987-000 \ \ \ \ \ I ~ - - 100-YR HEA WATER ELEV. ~n R-40 \I / % ~ ~ ..y \ \ \ ? \_J m 4 \ \ 1 \ \ R N00' S~51 "E ~ I I ~ - - \ \ \ 1 1 104,18' ' ~ , _ ~ ~ t ~ 1 ~1 1 \ / ti'° / A I 1 / 1 I I I ~ I ~ ~ I o / ; ~ I W V A \ V I 1 l \ / ' N ~ N \ I 1 1 I I I I 4~4 ~ ;1 ~ / / ~.I ,VO ~ 1 \ \ ~ ~ ~ 12 I ~ ~ ~ i 'i /,PICNIC ~ ~ i , ~ / - ~ I ~ ~ 1 A ~ 1 \ 1 1 V I I V ~ • / ~ Z ' ~ ~!I ~ ~ ~ \ V I V I / I / ~ I ~ ~ ; I 1;~1 ' \ \ \ I I ~ ~ - - - ~ ~ o S4ANGSET ~ ~ ~ ~ / ~ ' i ~ ~ / ~ ~ 1 ~~ASPHALT GREENWAY TRAIL - ~iAeLE r°~ ~ ~ ~i l ~ l 1 ~ o v v 1 A / / / 1 / -r-~ I I I ap • I0° 1• ~ 1 \ \ l I 1 I ~ W\ / I N~O IN,) O A N \ 1 A ~ ~ I/ W 1 I I ~ • ,Q ; z ~ ~~o Z o ~ A I 1 / / / / / I N Z 1 1 131 14 15 ) / / I v I b .z,. m z \ 12 I 16 I 17 / ~ l Q I i ~ ice/ ~ F l 1 I I Z TI f ~N \ V A A ~ \ / / / / Q v ~ ~ l / . / ~ r- ~ / ? ~ t E E E/ t r l /0 I I I Jm 1y. -tl. I I I l I l / , / ~ v _ / ~ ~ ~ ~ E`\ ~ / ~ ~ l / ~ E ~ I I I Iw;,,,1 I ~ I I ~ ~ / / / / ~ ~ I ~ \ I I \ / / i / / / ~ I I I I,< \ 20 dRAINA E 1 I ( I ~ ~ / / / o ~ I I ~ f I L. ~ ~ I I / ~ ao .I I f ,w \ EsMr,1 W 1 I P ACS N I I I I I ~REYH , I ~ / / l J ~ ~j f h I ~ ~ 1 IW 1 / I / , / , ~ v ~ I ~ ~ 1 / / . _ _ - - l ~ ~ / ~ / ~ - / h , ~ STEP,S ~ i ~ ~ ~ f ~qN c, / \ i , / / / ~ ~ f 0 ~ Q N(QV~~ / i i /i E E ~ E f s / ~ VAUGHAN, IRVIN R JR &EILEEN 0 d° E m ~ = 5212 LEIDEN LN r ~ ~S, / , ' - ~ ~ ~ r / E ' I RALEIGH NC 27606-9553 1 1 V V A 1 ~ / / / / / / / n - - ' i ~ ~ ~ ~ 0761.03 42 8629-000 1 \ n 1 - \ V I / / / / / / / / / W 1 \ I ~ ~ ~ A I / / ~ / / I ~ / / E f. R-40 W E f 4 f , I E E\ E f f V I m I \ \ l ~ / / TCH~D A EA i$ S MW ER / / / ~ ~ \ \ 1 I \ >o ~ / / ~ \ \ w \ \N w 35 1 \ ow / / CE/SS & MAI EN CE SMTI / / / ~ \ \ W N ~ o f~ k~ , N , ~ ~ N ~ E \ 1 W ~ \ I o~ \ \ ~ / 1 \ \ \ \ \ 34 ~ / / / / / / N, r i E ~ l i / I E \ E / , I{I E 1 r 1 f ~ / \ V A \ ~ 1 \ \ V A / / ~ / / / ,ao //A ZQ. v--- 36 A V A 1 \ SP DER \ \ o / ~4 / / / ; / / A ~ 1, ~ f • E E t ~ f \ 1 1 ~ 0 ~ v ~ ~ I / ~ , / / / / / ~ / / W I / 4 V A 1 A 'L ~ ~c' ? 1 (4)- HD~E PI S UI~'DER I I / / / / / ~ O L \ \ ~ Y~O~ ~ ~ 1 / 1 A v , \ \ ~ 6v ~ \ . T IL 16 L~ EACH , A \ ~ / / v v \ s 1 \ p, A ~ A / P~OgOS~O ST RMWlKTC~ / / / t r o v I / 4- I f - "d I l ~ \ V A 0' ti v~v ~ \ x \ ~ NV.= 14,5 V I 1 / / / / f f v - 2~ \ 1 v ~ ov UP R. ~ V / l 1 t~OND ~2 ~ d / / < f \ - ~ / ' /F f I 2 1 ti ~ ~ o l ~ I v ~ 1 v v - v / f \ ~ \ NSA . IN,V.-'14,2 - / 4EE DET L S . 2~5 \ 6 ~ F \ / I I ~ ~ ( ~ / f ~ f t 1 ~ ) 1 f \ 1 1 \ 1 ~ \ \ 1 - / 1 ~ A ~ - I 1 1 A c' 01 ~ 1 V A A v~ / I I I 1 1 1 I I I I 0 v 1 ~ I. ti. v 1 v v v 26 I/ I 1 I ~ 1 \ ~ FI I l 1 1 ti ~ I I I I( I ~ ,.l ~ f 1 1 F o l 1 1 1 ASPH~ILT GR€ENWAY TRAIL ~ i / 1 I ~ y 1• 81 \ ~ / / / I I I III I ~ / f f \ 3 1 1 1 / R. ~ \ \ ~ I I I I\ I /I \ ~ 1 \ ~ v / / I I II I I/ I - i r ~ \ I i I 1 1 ~ ~ I I I I I I 1` I I I l I l \ v v / / / / I I f Iv I I I I 1 \ \ \ \ \ 33 / I ~ ~ / G , I I ~ ~ ~ VAU HAN IRVIN R &EILEEN 0 J I ` \ 1 \ / / / / I I I I I I I I I j ) I V A V A v / / / / I I I I I I I ~ ~ ~ f 5212 LEIDEN LN I I I ~ ~ ~ ~ RALEIGH NC 27606-9553 I I I I v \ v ~ ,9 / ~ ~ l I I ~ A 1 . ~A V A v ~ / / / I zo ~ I I I I ~ v~ ~ v / / o~ I I I I I ~ f f f E E f E E f f p761,03 42 9656-000 I I I V A v \ v / / / I~ II I ) I / ~ , ~ E A E E E E' f < E E E R-4O I ~ E , I I I •v V ` S/ 2 7 / I I w l, I I I I I \ ~ ~ / / k l I I I f / / I I I I. 1 1 ~ A v V / / / / I I I d ~ f t{ E k 1 ~ J \ E I I I ~ I ~ ~ \ \ / / I II I. / I I I L \ \ ~ O f f j E E f / . • ~ f / 1 / I ~ \ ' v v / / Ill l l I I ~ I ~ ~ b / ( I I I ~ ~ A. v ~ v / / i l l l I I ~ f ' 1 ~ v ~ ~ I I 1 I ,I v V v v v v v % I I II 1 t j ~ • < ~ 38 I 1 1 A v v ~ v I I/ I III ~ I _ - / 1 I \ 1 \ ~ ~ ~ v / I I I I V I E ~ ' E - r- I 1 1\ v\ ~ v v v ~ I I I I I f f l I / 1 v ~ `v v I I I II E /E l l ~ f ~ - - - - - - - ~`V~ F E E I I 1 V v •v .v v v / / I I I II I I I f f E/f IE ti0 - -1- " 1 ~o A ~ ~ / I I I II I X f ~f ~~f/ t t s ~ ~ ~ \ ~ \ ~ \ \ / / I III I f ~f E r I I , I \ \ ~ \ I ~ m4 Ill F f , F / , F OG r \ f ~ E1 ~ I . • \ O \ 1 \ ~ \ \ \ l ~ l ~ f E f r F E f f h0 F, cn E F E f f , . V nUM~) / 1 1 \ \ is tl,> / E ~ f f f t~ f E F f 1 \ 1 ~ \ V A v N/ d f E F f O~ f W E < e r ~ / ~ E/' V ATCHED S ) 1 \ /~Q < r, f f f E ~ ' AREA I frT6RMWATER v ` ~ v \ • v v ~ ~ / H `Y I V A \ ~ A \ r~1 / / F 1f"1 f~ ' r f f f v t f f _ _ ASS--&-NCAfNTENANCE,,ES1~91 , 1 V • y ~ \ \ •V A \ v 31 / / o / / / a l VY E f f E f F f f E E E F f, Qv H'(/ ~ ~ . m R R WILLS P& SUE H / 1 1 \ \ \ \ v / f. / / / / E E F e r E t r r t / J I \ ~ / f E k E t t f f, E~ \ \ V ~ / / / A E: E '^110` ~ ~ ODGE S, E f f, f~ V ~ E O JR 8205 BELGIUM DR 39 i 1 1 I 1 \ \ \ \ \ \ . ~ - ~ / / / ~ / / / f E F f E f f O f E~r E ~0 E~ f E RALEIGH NC 27606-9731 E ~ (~,y ~ i ~ f~rf)~ 1 \ \ \ / / r e E t t E t 'f r r c/ I / / ~ ~ \ v~~ / ~ / / ~ E E f E f E , ~ F < --E -k --t ~ ~ 0761,04 52 2608-000 f f E 0 ~ ~ ~ R-40 / ~ / / / r f r t E E e E D? ~ ~ ' I • \ \ ~ / / / / / 6~ E r r t r « f f f ~ r f F f ~ E f E E ~ E h t ~ f ~ / O n5 ~ / / ~ \ \ \ \ \ \ \ \ y,\ \ \ \ ~ / / % / / ~ / / / f F E f E t E • f f E~ ~ / 1 \ ~ / / / r t r~ r r E r f r t r r I I V A • ~ \ v ~ _ f f 1~ ~F h / / /~O A f f f h f / /E V / /\^7J~~ I I I- / , A 1 A v 1~0 ASPHALT G~ A~F iT I~ / t f f• f ~ E f E E f v / ' f f t f f f I I I I I / I 1 \ \ \ / r E I I ~ \ ~ J ~ / ~ F ~ < E f h 0 / ~ ~ i•a , ~ I `rte . 1 \ \ \ / / , , , E E ~ E Of f f f f r r f f f IE E I ~f I I I \ ~ I 1 \ \ \ \ \ \ \ \ ~ ~ / ~ ~ / / ~ ~i~ 4 f f 4 4 fo F . k F . k • F 4 F f ; k f IE ~ ~y k F 4 F f f I I I I I I I ~ \ I~ \ \•'c-~~\ / i// t E t ~E f~ t f ,/Etfflff I \ ~ vv : v v + vv / / rEr r fr Ef r f r E E t~EN / I I I I I I 1 ~ ~ -BL-0G~ RF~ IC~IPIAY ~ / ~ / ~ F Fv f r F• f f~ f ~ f f ~//q~ f ~E ti ~a o ''~EW E E ~E f ^ 0 f L E~ f ~ f ~ O V I I I I _ I I / l l ~ vv .v ~ ~ F r r `'r Ed F k k f I i I ~ ~ ~ ~ FLOOD LIN p. / / / ~ ' E f f~ I I I V ~ v ti.. ! / < f f < r t. r •r ~r` `mil" r ~E E ~r E E 1~ f E f / ` • \ -h E EEEFE ~ ~ a I I I / 1 I ~ \ T ~ ~ \ / / / f~ r h t f E f 1 E F f I I i A I I o I v ~ ~ 4aav ~BOV~ 1"00 X~. PL / ~r E f E h f f ~ ~ / E ` f I I I I 0 • \ ` \ \ / / f E t E f f t f ~t • f F f F~ E t \ I I I I I \ ~ 1 .I \ \ \ ~ / / t ~f < f E f f~ f~ f < f f f f t f - \ ~ ~ I / \ \ ~ \ ~ / / ~ / E E E k t E ~ f t k < k I f f 1 I I VI i I I I I ~ \ f 1n / \ A A I I I' I- E f \ \ \ ~ / / / / f J~/ t f f t f. E f~ t E E ~ f f f/ \ I ~ \ \ \ \ / 'e f~ Y f f E t f f t f E t ~f "`k t E t I I I I I\ I I~ I I / v f f f t f v,v y ~ / / / E L / 1 ~ I I I I I I ' f f f~ ~ \ / / f E f f f f f f F E f f\ f f j l \ ~ \ / ~ t t e e r E E < t t r f f E f r \r1 r 1 I I I I I I I I y ) \ \ ~ f f f f r f r F E f f f f f t< I I I\I I I I I\ I I I ~ \ \ ~ t E f f E E f E E ' • . I 1 ~ ~ / f t / / -f f f E\ f f f f k E f• f I 1 I\ I\ I ~ / f \ \ \ / / / -f t h f f f f f f f E F E E E E• f f • y , I I / ~ 1 1 I I I I I ~ I I \ / / / k k f E f E f t f f h f E E r •f E f f f I t , , . I I I/ I I\ I I\ I I I 1 r ~ ' , ~ f f E f E < \f t f f f f E f E f f E f< I I I \ I_ + . ~ \ ~E f f t f E f t t f F t E f f f t f f f1 E I IIIII I I I~ \ ~ ~ ~ r t f EEXISTINGE f r f FEE E F E F f E f f GRID NORTH (NAD'B3} \ \ F f f E t f f k• E E t k E E• f t • 40 I I I~\I I\I ~ ~ I I \ ~s9 oa f E E~'L<AN~ t f f E f E f r E F E < E f f • ~ PB 160, PG 63 I \ \ O f t f f f/ f f r E E k E f E t E f f k I ~ \ I, ~ v v 5 V. \ \ / f t e t r r r < r f r e t t f r r « I I ~ I /1 ti I r MATHESON, WILLIAM K & SHARON L 8201 BELGIUM DR ~ GRAPHIC SCALE / / `{-I I I •v~ ~ ~ « r f f r r f f r f f f f r r f \ \ f f f f k f f f f f f t• E E k f f k f I ~ ,l I fi ~ v A / I ~ f r r f f f r E r f E r E f r E E r\F, E E RALEIGH NC 27606-9731 . ~ h E •f ~ 60 0 30 60 120 I _ I I v v ~ , A f f f f f r E E f E f r E /E f E < E E 0761.04 52 3687-000 f E R-4O X 4POSED J1 o_R W11ll I I i\ \ \ . ~ ~ !7 \ I tl f f f f F E f f F E E f E f E E F f f \I ~ f ~ ~ ~ ` ~ ` \ \ \ \ \ \ / / IE E t f f < f t f r < E f r f~ E f < « < \ ~ I ~ `9'OO~ ` \ \ \ F f E f E F f F f E E E. . f 4/ E E E f f f f f f f F f S E DETAIL SHT• l~ ~ I ~ ~ \ \ V A V V A ti \ \ F f E f E f k F f E E E E f f F, f E F E E , f F f 1 inch = 80 t. ' \ < E E I I I Iv~~~ I T~+ I r l I vI I ~ ~ ~ f r f E f f F E f E`/f f E« f E IA ~ ~ \ ' ` \ A, ~ / ~ I E E F E f f k f E F f k f r f E f _ \ ' ~ \ \ \ \ \ \ F E f f f F f E f E E t 4 C l k E F f I\ 1 E f E ~ ~ \ \ / ~ \ ~ ~ \ \ ~ \ \ \ \ \ \ ti \ f 1 • < e r e < < f r r r r r r r r r~r-~ ~ ~ ~ - ~ \ f • E f f E f f E E E E. f t E •f f •f ~ t f~f 1'1/1NUageoeeee I \ \ \ ~ • f OO f f f F f f t f f f f f F f t E E\ f E' f ff f t f E f t tv /1 N ~ARp e1. ~J l op~~N ej 501'00 03 W °°~~O N SS~~ y eee O a ~ oti 9 s r~o 2172.5 ' i 2 ~ I/ v~- ~ :Q~' ~ I FORREST & DONNA B I / PUROY, MORR S - - - SEAL s 8213 NETHERLANDS DR LOMBARD, JOHANNES S & I~ ~ 23484 • - ! RALEIGH NC 27606-9659 SONJA 8221 NETHERLANDS DR 0761.04 51 5188-000 RALEIGH NC 27606-9659 1'1 o e I Ne ~ R-40 0761,04 51 5531-000 / tree q0 aP1,• ~ 0• ~ R-40 N~ 1 IIINIII WiLLIAMS, KAY MARIE KASPER, PETER L & MARY NCI E 8225 NETHERLANDS DR 54 5416 AMSTERDAM PL N RALEIGH NC 27606-9659 RA RALEIGH NC 2760b-9708 MOUNT, J DAVID & GAIL L ~ r-- - - - 0761.04 51 5772-000 07 NASON, LAWRENCE FRANCIS & / 0761,04 52 8141-000 - 8113 BELGIUM DR ~ ~2 /~p ~ R 40W RALEIGH NC YOUNG, JASON E & SHANNON R R-40 R 8209 NETHERLANDS DR MARY JO NA50N 27606-9729 ~ ° ALL CONSTRUCTION SHALL BE 8217 NETHERLANDS DR RALEIGH NC 27606-9659 RALEIGH NC 27606-9659 0761.04 52 5697-000 0761.04 51 5084-000 0761.04 51 5384-000 R-40 R-40 R-40 O IN ACCORDANCE WITH G~ CURRENT TOWN OF CARY ~ i ~ I~l STANDARDS AND m ~ / ~ SPFCIFICATIONS. n a a No. Revision Date B Designer Scale Sheet No. W&R 1 °=60- 1. PER TOC 1ST REVIEW 10/23/04 BDH GRAI ""RADING & STORM DRAINAGE WITHERS RAVENEL NORTHERN SECTION ENGINEERS I PLANNERS I SURVEYORS a 2. REV. INFLOW TO POND 2 12/16/04 BDH Drawn By Date Gr"4REYHAWK SUBDIVISION y AL 9/2/04 ~ Checked By Job No. ~ ew 204028.00 WAKE COUNTY CARY NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.with ersravenel.coIn r INDEX OF SHEETS I DRAWINGS FOR EXISTING CONDITIONS SHT 1 OVERALL SUBDIVISION PLAN SHT 2 I DETAILED SITE PLAN -SOUTHERN SECTION SHT 3 DETAILED SI1~E PLAN -NORTHERN SECTION SHT 4 UTILITY PLAN -SOUTHERN SECTION SHT 5 ~ UTILITY PLAN -NORTHERN SECTION SHT 6 I CT ~a 1010 ROAD) GRADING AND STORM DRAINAGE -SOUTHERN SECTION SHT 7 i GRADING AND STORM DRAINAGE -NORTHERN SECTION SHT 8 EROSION CONTROL PLAN -SOUTHERN SECTION SHT 9 T ~ O~1'-S B'O~ ~ EROSION CONTROL PLAN -NORTHERN SECTION SHT 10 ~~q,-~ 62~j PLAN AND PROFILE - k001 STA. 10+00-STA. 23+00 SHT 11 PLAN AND PROFILE - R001 STA. 23+00-STA. 34+22.83 SHT 12 m ~ ~ _ ~ ~ ~ ~ PLAN AND PROFILE - R002 STA. 10+00-STA. 14+64.94 SHT 13 - e ~ r-- ~ R004 STA. 10+ 00 - STA. 11 + 71.7 2 1. PERMITTED USES SHALL BE LIMITED T0: I PLAN AND PROFILE -VAN GOGH LANE STA. 10+00 -STA. 23+23.45 SHT 14 a. SINGLE-FAMILY DETACHED RESIDENCES; ~ b. PARKS & RECREATION, OPEN SPACE (PUBLIC, PRIVATI: AND NON-PROFIT USES); AND ) c. AMENITIES & ACCESSORY RESIDENTIAL USES. / \ B LGI M R. -~I I ~JL~ ~ J - ~ r- PLAN AND PROFILE - R005 STA. 10+00-STA. 14+94.77 SHT 15 2. MAXIMUM NUMBER OF DWELLING U NITS SHALL NOT tXCEED 80 LOTS (1.48 DWELUNG UNITS PER ACRE). ~ \ i ITT T 3. THE LOTS LOCA I ED ON THE PERIMETER THAT ADJOIN I DUTCHMAN DOWNS ~1~ILL MAINTAIN A MINIMUiv1 LOT SIZE OF b~- ~1 r PLAN AND PROFILE - R006 STA. 10+00-STA. 13+57.55 SHT 16 18,000 SQUARE FEET. THE MINIMUM REAR YARD SETBACK FOR LOTS ADJACENT TO DUTCHMAN DOWNS WILL BE 30 FEET. i / J L R007 STA. 10+00 -STA. 13+40.37 Y. A 51DE YARD SETBACK OF 20 FEET WILL BE PROVIDED ON THE SOUTH SIDE ONLY BETWEEN THE LOTS IN THE PRO?OSEC } II DEVELOPMENT AND WAKE COUNT`! PIN 0761-50-4302, AND 0161 501238 (3000 VAN GOGH LANE AND 3001 VAN GOGH LANE). Q _ _ ~ ~ I SANITARY SEWER PROFILES -LINE "C' SHT 17 I 5. 0- 1 S IN DUTCHMAN DOWNS WILL BE PROVIDED. THIS EASEMENT A 2 FEET LANDSCAPE EASEMENT ADJACENT TO THE LO I WILL BE MAINTAINED BY THE HOMEOWNER'S ASSOCIATION ASSOCIATED WITH THIS DEVELOPMENT. ~ 'Y ~ SANITARY SEWER PROFILES - LWES "J", "D", "E", "F" & "G" SHT 18 6. EVEN THOUGH EXISTING TREES AND VEGETATION ARE I IMITED, THE SITE SHALL NOT BE COMPLETELY DENUDED OR ~ ~ . GRADED. THE INITIAL GRADING AND CLEARING SHALL II[ LIMITED TO THE ROADS (RIGHTS-0F-WAY AND EASEMENTS), - L ~ PLAN AND PROFILE - PSS "A" (OFFSITE SEWER) SHT 19 FRONT YARDS, SIDE YARDS AND BUILDING ENVELOPES. SELECTIVE CLEARING AND GRADING IN REAR LOT SETBACK ~ I AREAS AND OPEN SPACE WILL OCCUR AS LOTS ARE DEVELOPED AND ON A SELECTIVE BASIS. R ~ ~ ~ PLAN AND PRQFILE - 1010 ROAD WIDENING SHT 20 W - 7. DEVELOPMENT WILL BE CONSISTENT WITH THE SKETCH PLAN SUBMITTTED AS EXHIBIT A. EXACT LOCAl10NS OF A.NY Q U STREET STUBS WILL BE DETERMINED AT fHE TIME OF SUBDIVISION APPROVAL. ~ STRIPING PLAN - 1010 ROAD SHT 21 8. PENDING WRITTEN RE E T BY THE T W F ARY PARKS AND RECREATION DEPARTMENT AND REIMS i ~ QU S 0 NO C URSEMEN~I . CREDITS FROM THE TOWN, A 20 FOOT (MINIMUM) GREENWAY TRAIL WILL BE DEDICATED AND BUILT BY THE DEVfI OPER \ ~ STORMWATER MANAGEMENT PLAN SHT 22 THIS GREENWAY WILL GENERALLY BE LOCATED ALONG THE ENTIRE LENGTH OF THE STREAM BUFFER. FlNAL DETERMINATION f- i OF THE EXACT LOCATION OF THE GREENWAY WILL BE MADE AT THE TWIE OF SUBDMSION APPROVAL. I' 9 DETAILED PLANTING PLAN -SOUTHERN SECTION SHT 23 9. RUNOFF PROTECTION FOR THE 5 AND 10-YEAR TIME OF CONCENTRATION STORMS WILL BE ATTENUATED IN ORDER i 1 TO PROVIDE FURTHER PROTECTION OF DOWNSTREAM PONDS. ~ 1 10. PRIOR TO THE DEVELOPMENT OF THIS PROPE2TY, THE EXISTING HISTORIC STRUCTURE (A SINGLE-FAMILY HOME) WILL ~ DETAILED PLANTWG PLAN -NORTHERN SECTION SHT 24 BE RELOCATED OFf-SITE BY THE OWNER. 11. A PRIVATE RECREATION AREA WILL BE PROVIDED BY THE DEVELOPER ON OPEN SPACE ADJACENT TO THE STREAM BUFFER. STORMWATER POND DESIGN DETAILS SHT 25 - L~ - ~ ~ T STORM DRAINAGE & EROSION CONTROL DETAILS SHT 26 SR Ip - ~ X10 UTILITY DETAILS SHT 27 i ' J~ I' ~ ~L ROADWAY DETAILS SHT 28 GREENWAY DETAILS SHT 29 ~ h00b 5 i AON GREENWAY TRAIL PROFILES SHT 30 -N- OQapp~]9~J~ PUMP STATION SITE PLAN PS-1 R - - - - ~o ~O ~ I PUMP STATION SECTION VIEW PS-2 - - - ~ \ P PUMP STATION PLAN VIEW PS-3 I PUMP STATION SITE PLAN LAYOUT PS-4 ~ ~ J CHEMICAL FEED SYSTEM BUILDING PS-5 ODOR CONTROL EQUIPMENT PS-6 ELECTRICAL DETAILS PS-7 ELECTRICAL DETAILS PS-8 DESCRIPTION EXISTING PROPOSED INTERMEDIATE CONTOUR INTERVAL ~ J INDEX CONTOUR INTERVAL II_ I DEVELOPER/APPLICANT RIGHT OF WAY LIMITS - - - ROADWAY CENTERLINE - CURB & GUTTER _ SANITARY SEWER FACILITIES -ESS Es5- -ass-I-PSS- WINDJAM DEVELOPMENT GROUP STORM SEWER FACILITIES a ~ WATERLINE -~-Be-~- PW~ PW- E N E L 1130 SITUS COURT, SUITE 250 RALEIGH, NC 27606 ~ FIRE HYD ~ RANT ASSEMBLY ENGINEERS I PLANNER I S SURVE FENCING STRUCTURE -0 0- • U ~ V E R $ TELEPHONE: OFFICE (919) 256-3320 FAX: (919) 534-1753 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-600 919-467-6008 www.withersravenel.com ATTN: CRAIG GLASS WOODSLINE N/A " WATERWAYS - - NIA SILT FENCING N/A X " -X a a I SITE DATA TOWN OF CARP PROJECT ~ 04-SB-022 TOTAL TRACT SIZE 53,64 AC. ZONING R-12 CU PIN'S 0761,03-40-7699 078L04-51-2650 TOTAL # PROPOSED LOTS 78 PROPOSED DENSITY 1,45 D.U./AC. MAX. # LOTS ALLOWED 80 PROPOSED MIN. LOT SIZE 12,000 SF PROPOSED AVG. LOT SIZE 16,091 SF OPEN SPACE PROVIDED 1821 AC, LF OF STREETS (PUBLIC) 5174 FL BUILDING SETBACKS. FROM THOROUGHFARE 50' FRONT 20' SIDE 10' CORNER SIDE 20' REAR 25' ADJACENT TO DUTCHMAN'S DOWNS 30' TOTAL LF GRAVITY SEWER 7083 LF 8" ON-SITE 5283 LF 8° OFF-SITE 428 LF 14" ON-SITE 1188 LF TOTAL LF WATER MAIN 6" DIP 1490 LF 8" DIP 2570 LF 12" DIP 1160 LF TOTAL 5220 LF TOTAL LF 8' GREENWAY TRAIL 780 LF / ' i TOTAL LF 10' GREENWAY TRAIL 1250 LF i ' TOTAL LF ROAD WIDENING 1090 LF (545 LF ON BOTH SIDES) ~ ~ r&pP y~ ~ i TOTAL # WATER VALVES 23 / ' ~ `1 ~ l ~ TOTAL # FIRE HYDRANTS 12 ~ ~ ~ TOTAL # SEWER MANHOLES 41 I, ~ ~ i / I i1 i' , 1~ ~ I ~ IMPERVIOUS SURFACE 13.63 AC. (25.4%) IMPERVIOUS SURFACE TABULATION: I ~ ~ ~ /r e ~J / wulAUS, uICHaCI S a MEI-nu STREETS 157,500 SF 4809 ~LENS BAY Cr, ~ i ~ ~ APEx 1(L z753B-s19+ i A 1 OEN HEIDER W. SIDEWALKS 24,140 SF OEN HEIDER WAY GREEWAY TRAILS 18,940 SF C76 95258 POU9LL, Jaf6 IEw6 Er u / ~ 17z4 1EH rEN RD (EXIST. 50' R/W, 20' EDf 1 . R APIX NC 27504-7181 / ST. 50' R/W, 20' EDGE-EDGE) PUMP STATION SITE 3240 SF 0]60.01 49 J731-000 $OALE. JOHN v d LAL46E K R ~ / 5505 OEN NFJDER wAY I , RA61IG03 du; g1276 9560 GCdr2ALEZ, RICnR00 A d PaiRICIA F CxEx, DON CHI d CHS1L xUl LOTS 390,000 SF (5000 SF/LOT X 78 LOTS] / / 5433 DCN HE10ER WAY OAVISCK OAMD 6COR d SV NE C / ~ RALEIGH NC 27608-9584 5425 DEN HEIDER riAY DAND scam a su NE c TOTAL IMPERVIOUS SURFACE 593,820 SF iAriOR, ROBERT W JR a NARY R IR087 uEIDER WAY 5108 DEN NDDm WAP TOTAL SITE AREA 2,336,395 SF SCRGE. JOnN P d LAURE 5429 OEN HEtiEA WAY 0)61,03 41 1308-000 RALCICH NC 27608-9584 RALCKiI NC 27606-9984 ~ / / 5545 DEN HEIDER WAY R-40 0]67.03 41 4189-000 A/ NLrON, RICNARD E d JANE E 0761.0! 41 4569-000 RIDER, ~fF k L,SA C RALEIGn NC 2760fi-95fi0 R-40 IC 27606-9564 RAIERiI NC 27606-9584 lees-tea m67.03425201-aoa TOTAL PERCENT IMPERVIOUS 25.4 • \ , _ . ~ ~ 5517 DENT HEDER wAT 9509 DEN nEwER wAY 0761.07 40 4846-000 R-40 RAfE1CH NC 2]fi06-9580 RALEIGH NC 21606-9560 -d0 PHIFER, MAF R-4o scuaN, aRECDRY E a BE2sY a rNaNAS s167,DN N R WNDJAM DEVELOPMENT GROUP R"'reR, MaR"' ° TER` N >aDJ DEU ttElOEq WAY OWE /DEVELOPER: HOxESCAPE BUILDING COWANY I 7 0781.05 b 4375-000 0]61.03 40 4688-000 1 4813 NILLEN9 BAY Gi 4yL A-d0 R-d0 5421 DEN H RALEIgi NC 1 APEX NC 27539-5194 ~ I~ 0761.03 41 Sa21 DEx HEIDER WAY RalE10N NC 27806_g.,r94 1130 SITUS COURT, SUITE 250 RALEIgi NC 27608-95 0761.°3 42 5414-DOa Q7eo49s361 20_PRIV TE LANDS ~ ESMT. ~,,,,y,; R-+o A-30 - I Ir---~ r--- ~ - '-~,-j - - ~ I - mg1.DJ a ase7-aaD A-4D RALEIGH, NC 27606 R-40 r ~ f ~ ~ ~ ~ i ~ l 20 PRIVATE LANDS R: 1 ~ ~ ~~e / I I I ~ I I I ~ ~ Q ~ I r r 20 PRIVATE LANDSCAPE ESMT.__ _ _ ATTN; CRAIG GLASS i r=-=-~ r-=-- r--- ---30, ~REENwAY & ~ PH; 919-256-3320 A I _ I II Q ''1 I I P ~r. ~ ~ ~ O6 / ~ I I I ~ o ~ _ _ SSA 1ARY SEWER ESMk/~;~;.:1"".~'~'~~'~~''~:-;.'; i it ~ i i ~ i ~I rv ; FAX: 919-534-1753 I ~ a. t 1 , i l i I ~ ~ i N I I I I I I l o ~ ~ ~~1 ~ A I I I 1 1 I I I I I I I I \ A I 0' G ~ENW Y 3 E I~ i `0 I I a / lii / O N ' I 4 - _ I wamxs fiCCaNO we ~ ;,h'." .1 1 i ~ ~ _ yI - '---''I ~----J S L---' -SANIT~. K~EW~R~1 ~ -J L---J L-- I b ~ ~ I 1 1811 NLLCNS BAY ~i (3'. ~ i ~ as 4~ ~ APE% N: 27539-5194 L l 0760497350 . . ~ ~ 1 ' VAUCnAN, IRNN fl Wt a 0.E 5212 D7aENW r--_~ r___, E_-___ ~ .'.~;i,..~.`~ FAIEICH NC 2 760 6-6353 I I I I I ~ ' 4 . III ~ 1~ ~ I U CP ~ ~ ' w I I N I I N I A ~ I I~ N I I N V ~ II a1ei.D3 a7 e6n-a°D I I I N I ~ I l N v ~I. `I:~, R-a0 NOTES: 'r~U~' N N I I m i l V I ~ i ~ 1 1", m J I I Ol I 1 V N L_-__J ~ ~I W I I -P L___.J I I I I 1 ! ----I ~ I I NELSON. MARK A d ,qY ~ ~ .(rtw~, Q' . _ - I - - ~ - ~ ~ - ~ ~ ~ t-. -p l , ~ - ~ 1. ALL „ON..TRUCTION SHALL BE IN ACCORDANCE WITH CURRENT TOWN OF 7 a6n N+uENS Sa c- \ ~,Q-.. .~Q: -1 N r--- ~ ~ I \ I I APIX NC 215!9-51 S4 - 1 1 i Q7fio49R2v ~ ~ Cn 1 A I~ - ~ W E' ~ N ) _ 1 .0:.., :•W. A c0 ~ '.i, i ~ I i.' ~ ~ „ ~ ~ :I CARY STANDARD SPECIFICIATIONS AND DETAILS, t ~ ~ m I - rn _ ` R 3D / ~ U W O \ 2~' I h - ~i i i I ti i fi ` I' I y / VAUGNAN, IANN R a ?LEEN 0 .'I.; 5212 LEIDEN UI ~ RALENRi NC 2 780 6-9 55J 2. LAYOUT SHOWN S FROM PRELIMINARY LAYOUT BY ELAM, TODD _ _ Ut ~ 1~ O' - r I PRNA 11 ~ ~ N ~~TQ M ' ~ / . ~ ~ ~ ~ ' ~ 0761.03 42 OAS6-000 ~ , , ;;I A-ao D AMBROSI AND WITHERS &RAVENEL, INC. N i~STQ.MFNATE~,~, i _ , ~ W ,1 ~,a, v 1 / ~ ;t~, - wRLES xu[~ J t B IIFIIEY U (n 1 N p N~`~7 . ~ y 3. EXISTING TOPOGRAPHY SHOWN IS FROM PRELIMINARY SURVEY I i v A sD z Au WDIY Luc J 1 I U44LE8 ~ Ppwfiy q:/111 y F ~ JONES RONALD C k LEIGN ANNE J ~ ~ 4. i d NC 17539-5774 ~ ~ ~ LS ~ ~ 1 BY WITHERS &RAVENEL, INC. s l m :r~ 4(p4 lE9L iFY 9D 3000 4AN COQI LANE ~ ~ \ EiK / 91962 9NI1H. LWIS W k ANNA APE% NC 27579-5774 - - - ~ - - _ - ~ I J 1 ~ \ SiH ~ ~ ~ _ YOI K t1b1 R-4 ]008 vAN COCK IANE ~ I . _ _ <A / I ~ p v~, ~ PJ O_~ , ~ 09pOt 81 1~~ / APE% NC 27579-5774 0161501238 ~ r r. ~ . ~1..~ .a .,~:~f: .1. _ ~'~:~:,::/'~.i~": :f: •,~•::'::1 „~.,,,t„~M 4. WETLANDS SHOWN ARE FROM DELINEATION BY ROBERT J. GOLDSTEIN & nnc rr9oa-naM ~-.or Dr61sma7 R-4aw ~i v I o7 ~ ~ W ~ ~ ~ ~I ~ 0710.@ S! assS-a08 % ~ ~ ~'y i 1_p ~ row ~ - - ~ W ~ 1 I ~ 7 b~: ~ a ~ ~ ~ ~ v ! ~ ~ .1r~:~:~:~;~1~ O0°°0A1i°' ASSOCIATES, INC. AND MAPPED BY WITHERS &RAVENEL, 1NC, \ %,.r;,;;+;.:'~~'~~ 5. `HE ~_\-ELOPER WILL BE RES ONSIBLE FOR ALL INSTALLATION COSTS i ~0 ~ IF`9: o\.. C \ ~ I N ~U I I I ~ ~ 1.;..;~.;.: • A~SC~.A~~D WITH STREET LIGHTING ALONG PROPOSED STREETS, ADJACENT : I i ~ r--- ~STORMWAT~R~ .~~~~'1 I ~ ~~'r~~~''~'~~~`';~i~~'~~>''~~~~~~~'~~~~~~~~~~~~~:~~~:.:;:;::;:',:;. ~ S~REETS AND THOROUGHFARES AS REQUIRED PER TOWN OF CARY ~ I i r.! I. / / POUC`' STATEMENT N0. 13. THE DEVELOPER SHALL CONTACT CAROLINA I ~ ~ ti° I ~ Pt~NO 1 F ~ ~ ~ I ~ J':: I: ~ AMNa~ E POWER AND LIGHT COMPANY AF-fER PLAN APPROVAL AND PRIOR TO I P`. Q' L CT. EMC G d SAIDR e ~ W I ^7 ~ r 0 ~~~4 ' d O I vAx WCx LANE I ~ I , I ~ I:62D,aE`~DA CONSTRUCTION IN ORDER TO DEVELOP A STREET I HTIN PLAN FOR THE • RRLE10x NC 27606-91JI L G G _ / ~ ~ NC 27579-5774 I ~ I i I _ _ , \ N Et`t, ~r' ~::I:~ O767A4527687-D00 X SITE/SUBDIVISION PLANS. \J~~ V4. 20 PRIVATE lA DS~APE E MT. ~ / SINQE3ARY, ROBEAi G d LISA N ~ ~ u ~u~ - ~ ~ 6. ALL SIGHT TRIANGLES OUTSI OF TH STRE T RI HT- F-WAY HA PRIV``- . om DE E E G 0 S LL BE 6117 NETHERLANDS OR nRL' ' POWELL. W411AN M JA / RAfEIGH NC 17606-%05 ILLaH, MICHAEL C d 0. N'E F PUROY, MORMS FOARE57 k DONNA B LOMBARO, JOH4NNE6 5 d SONJA 4004 (EN lEN RD / ~ 0761.01 50 5515-ODD 8221 NEIHERLAN98 DR A~ RECORDED AS SIGHT DISTANCE EASEMENTS ON THE SUBDIVISION PLAT AND ARE WWaNS KAY MARIE APEx NC 2]502 / 8205 NEIHEFLANOS OR ~ 121! NETHERLANDS OR RAEIGH NC Z]605-9659 -b RALEIGH NC 21806-96 RAL[IGH NC t]60fi-96 KASPER, PETER L d MANY E 1 0160.02 39 SZ78-COQ / I 0781.04 50 5998-000 ~ 0161.04 51 5188-000 0]61.64 51 5531-C00 6225 NEiHERlAN05 OR 5q6 AN67ERDaM% ~c SUBJECT TO USE RESTRICTIONS IN THOSE AREAS. R L a MANY E RAIEIOH NC 17808-9708 R-40W A-AO R-40 R ~ FALEICx NC 27606-9659 .ANDS OR 0761.01 52 8141-ODO (\7 27606-s65B fl-'OW Mouxi,~DANDac4lEE o0 7. SIGNAGE IS A SEPARATE APPROVAL PROCESS AND HAS N07 BEEN REVIEWED ,I2_OW 8113 BEIpaN DR a] j1 ~ ~ II i R?40~ 51 91)2-000 / AfLHELOR. PLAN 0 & L EiIE M / / ~ 6201 tEiH[RLAND6 OR ASON, LAWRENLE fRAN S N AALDOH N[ 27606-8720 m' D76,.64 J256B7_D00 ~ OR APPROVED AS A PART OF THIS DEVELOPMENT PLAN, R-/0 m / ALEICH NL 27 Y NC, JASOx E d SHAN CN q ARY JO NASON ' / / / 606-96 / I 0761.04 50 57]7-000 tl 09 NEINEALFN08 OR 21] NETHER4AN06 OR I _4p q LEIGH NC 27606-9659 ICU NC 2]600-965 I rn / RING, EDWIN M k OCAOrHY L 61,04 51 SOfid-000 ]6L0/ 57 5364-000 7 7 ~ 8113 NEINERLAxO$ DR R~40 _40 ~ RALEIGH wC 21808-9805 ~ 8. ALL ABOVE GROUND UTILITY EQUIPMENT AND FACILITIES ASSOCIATED WITH m ON-SITE ELECTRIC, CABLE, TELEPHONE, GAS OR SIMILAR SHALL BE LOCATED 0]61,04 50 8419-000 I I 1 R-4D NETHERLANDS DRIVE IN THE SIDE OF REAR YARD AREA OF THE SITE AND SCREENED, TO THE i j I (EXIST. 60 R/W, ZO' EDGE-EDGE EXTENT POSSIBLE, WITH EVERGREEN PLANTINGS. PLANTINGS SHALL ALLOW it j ~ FOR A MINIMUM OF 5' CLEARANCE AROUNDTHE STRUCTURE TO ALLOW FOR ACCESS. ADDITIONALLY, ANY SIDE OF THE STRUCTURE HAVING A DOOR OR I PEACOCR. JOSEPH i .R d LOCK, THE PLANTINGS SHALL ALLOW FORA 10' CLEARANCE. THE AMOUNT ~I ~ LA1NEMxE 5 ~ ~ 6109 NEINEALUIDS DR 7 ~ RALEIWI NC 21606-%CS OF CLEARANCE SHALL ACCOUNT FOR THE SIZE OF THE PLANT MATERIAL AT 0761.04 50 8560-000 l/ I R-40 I MATURITY. 1 I T ~ I 9. NO TREE SHALL BE LOCATED WITHIN THE RIGHT-OF-WAY OR WITHIN 5' I I OF A SIDEWALK. ~ ~ 1 1 I 1 ~ ' ~ 11 10. TWO BENCHES WITH CONCRETE PADS AND ONE TRASH RECEPTACLE WILL BE REQUIRED TO BE INSTALLED BY THE DEVELOPER ALONG THE GREENWAY TRAIL. ~ 1 / 1 THE LOCATIONS WILL BE SITED BY TOWN OF CARP PARKS & RECREATION i I 1 i ~ ~ DEPARTMENT. PLEASE CONTACT JOE GODFREY AT 462-3863 TO REVIEW Y ~ TRAIL ALIGNMENT PRIOR TO PAVING AND SITING THE BENCH LOCATIONS. ~I / I 11. A REQUEST FOR A DEVELOPER AGREEMENT BETWEEN THE DEVELOPER AND I I / I THE TOWN OF CARP MUST BE SUBMITTED FOR THE TEN-TEN ROAD WIDENING PORTION OF THIS PROJECT. THIS REQUEST MUST BE SUBMITTED TO THE TOWN OF CARY PRIOR TO BIDDING OF THE ROAD WIDENING PROJECT OR THE DEVELOPER FORFEITS THEIR REQUEST FOR A DEVELOPER AGREEMENT. GARO a p~ oNt9~t ~ aQ~ _ ~i SEAL • 's ~ 23484 a s, ~ . ~ ~.~Gi • Y 0 ~~,a o4-se-oz2 APPROVED TOWN OF CARY /2 Approved by Dote GRID NORTH (NAD'83) PB 160 Pc 63 ALL CONSTRUCTION SHALL BE Plonning Date , En ineerin Date IN ACCORDANCE WITH 9 9 GRAPHIC SCALE CURRENT TOWN OF CARY zoo 0 10o zoo 40o STANDARDS AND a rnr~ErB~,ETEn?1r 6 artk-irm./,%i noiNa 1 inch = 200 ft. a 9 No. Revision Date B Designer Scale 1. PER TOC 15T REVIEW 10/23/04 8DH W&R 1 "=200' _ Drawn By Date GRAYHAWK SUBur IVISION WITHERS RAVENEL Sheet Na. AL 4-7-04 OVE OVERALL SUBDIVISION PLAN ENGINEERS I PLANNERS I SURVEYORS Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-66008 www.withersravenel.com eW 204028.00 WAKE COUNTY CARY NORTH CAROLINA i ~ i ~o ~ ~ ~i I I! SORGE, JOHN P & LAJriE K / 5505 DEN HEIDER WAY RALEIGH NC 27606-9`.•i;0 ~ ~ ~ ~ 0761.03 41 4111-000 R-40 GONZALEZ, RICARDO A & PATRICIA F 5433 DEN HEIDER WAY RALEIGH NG 27606-9584 POWELL GAMES LEWIS ET AL ~ 3724 FEN TEN RD APEX NC • ~ ~ ~ ,Q GRID NORTH (NAD'83) 0761.03 41 4308-000 'TH (NAD'83) 50RGE, JOHN P & LAURIE K R-40 27502-7181 / ~ / PB 160, PG 63 ~ / ~ 0, PG 63 5505 DEN HEIDER WAY HOMESCAPE B ILDIN C`~MPANY 0760.01 49 3721-000 ~ v 4813 MILLENS BAY T:' R-30 ~ EULTON, RICHARD E & JANE RALEIGH NC 27606-9560 i 0761.03 40 4846-000 I - ~i APEX NC275 91--51 4 ~ E 5513 DEN HEIDER WAY RIDER, JEFF & LISA C R-40 0760495361 / ~ ` 'Q RALEIGH NG 27606-9560 55D9 DEN HEIDER WAY R-30 V ~ i;` `y / 0761,03 40 4373-000 R- 40 7 -9560 ~ I RALEIGH NC 2 606 0761,03 40 4688-000 \ T ~ _ _ V ~ ~ R-40 ~ ~ ~ ~'I ~ ~ I ~ / A m ~ ~ I \ ~ - _ / ~ ! ~ ,I ~ , \l ~ , I _ _ w - ' D- _ _ ~ 650.52' / - - ~ , - o ~ ~ NOb'35'14 E / ~ ' 1660.37 ~ ~ / °o I 1 i / ~ ~ ~ ~ - ~ 3g' SANITAR~G~ SEWER & ~ 1 ~ ; ~ 'DRAINAGE E'SMT. - - ~ ~ ~ _ , _ _ _ - 1 ~ ~ \ j I ~ ~ / tib ~ ~ N ~ ~ N ~ ~ _ ~ ~ ~ , t 1 ~ ~ 1 ~ _ ~'D~ ~ ~ ~ I I I o i o ,,~o o lw o~ r2'r ~ ~ ~ r' a _ \ _ _ L. r~ - ~ ~ ~ tip' ' ,P ~ / r;~ - i ~ ' - / V ~ ~ I / ~ A' t ~ I I o ~ co ~ t i i ~ ~ G, ~ ~ ~ ~ ~ l i ~ D ~ ~1 / ~ o f I r l rJ , rv I, N ~ / ~i / ~ ~ N + CC ~ 1 ` ~,l r ' ~ - - ~ ~ ~ O7 i' ~ s / ~ ~ z ~ o" ~ I- ~ 1 I ~ I O O l N ~ ~ j v ~ ~ ~ - _ ~i ~ ~ ~ 1 ~ ~ ~ ~ 10 ~ ; ' ~ ,j ~ ~ ~ ~ . z z ~ I o I z ~ ~ ~ - ~ ~ .6 ~ (7 8 , f ~ 1 ~ ~ i i ~ ~ m ~ r~ ~ z r>1 ~ A r ~ \ J 1 ~ / ' ~ ~ 1;) DI ,iw I m ti ~ ~ 0 ..13+00 r ~ 12+~~ -2... : % 1 / - A ~ ~ ~ ~ ~ ~ ~ i ~ ~ I f' ~ / / i I '1 v r O - - ~ _ 6 - / ~ ~ I / ~ / ~ / I I I ~ I I ~I ~ ~ / i ;I i ' I I ~ \ I o~ - - .6 ~ I ~ ~ ~ ~N / l ~ I I rv r SA \ WATKINS BUILD~(G INC ~ n ~ ~ ~ ~ l~~ ~ ~ L ~ ~ ~ ~ ~ W I ~ 4817 MP~LENS AY CT. c1 x~ / ~ - ~ ~ APEX NC 2753 194 'N / ; !i xoo _ / i / i ~ ~ ~ i ~ ` _ . e - ~ V ~ •r 0760497350 ~ ti i % ~ ~ ~ ~ ~ / _ ~ / ,1s~9o - is o .p ~ ~ i o ~ h o / ,.:I . - Q~ i,;~„1 , __41400 ' 22 ~ 3+ 0 24t -85+ / ~ ~ 00 , R-30 W i ~ ~ ' tJ ~ ~ ~ 1, ~ ~ _ . ~ yy „ , - qr a ,y 9. ~ r; , / ~ ~ l ~ n ~ - ~ ~ ' W C7 . ~ _ ~ ~ ~ / mac. , i m i ~ y , ~ / 1 ~ / ~ , ~ ~ n _ V i ~ o ~ ! II ~ ~ / ~ ' ~ ae.. ~ A L. ' I ~ ~ / i ~ n ask 1 V ~ i I i % l ~ C0~ ~ n0 ~ r ^ ~ ; ~ ~ I ~ ~ / ~ ~ ad ~ 20 ~DRAINAG~ I r ` o° ~ ~ _ _ - } dart ~ ~ I r / / ~ / , EASEtv1ENT ~ ~ w ~ / ~ ~ / / ~ ~ j / ~ ~ A W m~ ~ gyp, a ~ g~ ~ ~ ~ , 50 ~ / / / ~ i , ~ ~ u> ~ / ~ ~ ~ I ' T 1 _ f ~ / ~ ~ I ~ ~ I / ~ , o~ ~ / ~ I i ~ _ 1 ~ ~ 'A i ~ ! ~ I / / i ; ~ / i ~5 i 59 k~ \ ~ I ~ ~ ~ I 1 ! ~ ~ , ~ / 1 ~ ~ ~ ~ 1 v' 1 ~ ~ . ~ i,~ i ~y - ~ ~ u ~ (~~1 i 00 '~Z I I l I ~ / , / _ i ~ ~ 1 ~ a, .i ~ ~ ~W N ~ ~ ~ ~ ~ ~ ~ ~ 'i~ - / ~ 1 ~ ~ F ~ ~ ~ ~ ~ ~ I 4 NELSON, MARK & JbY I a so - ! J ' / ~ ~ ~ 1 ~O \ 7. ~ 4821 MILLENS B Y Cl( ~ ~ ~ x` ~ ~ ~ ~V I I ~ / ~ ~ l ~ , ~ ~ ~ I a ~ ~ 1 ~ 1 APEX NC 27539 5194 ~ ~ ~ ~ i ~ r_ J / / 0760499227 ~ ~ ~ - z, ~ ; I ~ 1 ~ / I 1 / 1 / ~ ~ ro ~D 1. ~ ~ ~ / / / / ~ ~a ~ ~ C~ I I 01 , R-30 ~ ~S ~ - - _ _ _ ~ ~ ~ - _ ~ I ~ / ~ ~ ~ i / ~ / ~ , A ~ ~ I - ~ - ~ ~ ~ ~ 1 ~ ~ F1 1 ~ _ I o 1 ~ ~ / I i ~ I ~ - t ~ l l / / / i it~U ~ ~ ~ Fy 1 I l /I , I - ~ ~ I / / / ~ ~ 1 I ~ 1 j j ~ ~ ~ - _ ~ ~ ~ ' ~ / l ~ ~ I ~I I ~ f ~ ~ ~ ~ ~ - ; I I ~ ~ ( ~ 1 ~ ~ / ~ ~ ~ I I I 30 ANITARY SE}NER & i ~ ( I I t~ I m / / DR AGE ES ~ ~ ~ ~ I ~ I• I I w ~ - - - i ~ ~ MT / _ ~5 j I I I I 1 ~ ~ _ _ < 1 t0 - - - i w ~ I II ~ ~ ~ ~ i I I I~ I I 11 ~ _ - - ~ _ ~ ~ ~ l ° ~ ~ ~ ~5~ soo~> >'asw~ - ~ _ - - ~ ~ ~ l ~ ~ _ l c ~ ~ i ~ _ ~ i ~ - - ~ ~ I ~ l ~ - - I ~ .51 I ~9 a 1 1 I I L ~ ~ ~ I 1 48 ' l ~ - ~ I - - 9 `o i I I I I i I 1 ~ ~ \ I _ = cis - - I ' a~ I 1 POWELL, WILLIAM M JR ~ ~ I ~ 1 ~ ~ ~ ~ (e , - - ~ 1 ~ w ~ ~ ~ ~ a I ~ 1 I \ ~ 4004 TEN TEN RD x~ w I I I ~ I o ~ ~ ~ ~ ~ I _ _ - / ~ I 1 ~o ~ - - i 1 ~ ~ ~ ~7 ~ 1 ~ - I 1 APEX NC 27502 0° z`' MAPLES NANCY J &TIMOTHY R ~ I I ~ 0760.02 59 1570-000 ' ° REMLEY 3012 VAN GOGH LANE SMITH, LOUiS W & ANN;1 M I, ~ I I ~ ~ ~ \ ~ A \ ~ ~ ~ ~ ~ ~ ~ ~ I 1 R-40W ' ~ ~ JONES, RONALD G & LEIGH ANNE ~ APEX NC 27539-5774 3008 VAN GOGH LAhE I~ A V ~ ~ ~ ~ ~ ~ ~ _ , - ~s _ , ~ ~ ~ ~ ~ a~~ l I ~.'1 ~ ~ 3000 VAN GOGH LANE z 0760591982 APEX NC 27539 5774 APEx NC 27539-5774 ~ ~ -40W 0761501047 0761501238 w 1 i R-40W R-40W ~ ~ V A I' ~ ~ 4~ T~ - l 1 _ ~ I~ ~ ~ ~ ~ ~ ~ O ~ ~ ~ ~ ~ ~ \ ~ ~ i ~ ~ ~ ~ ~ ~ ~ HATCHED AREA( IS STOP AT~R ~ I ~ ~1 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ m ~ ~ - _ - -AECES~ & MAINTF,,,NA'~tCE SM . ~ ~ ~ C ~ ~ ~ ~ ~ i ,6~) o ~3~) 1 PoWE~~, JAMES LEWIS TRUSTEE ETAL - ~ STORM DRAINAGE CHART 1 V ~ 1 ~ I ~ ~ y ~ o ~ ~ ~,1 1 ~ ~ ~ 20 ~DRAI~AGE ao 1 , - 1 I ~ ~ - ~ ~ ~ I ~ ~ - - --rr 372A TEN TEN RD ~ ~ !~0 1 ~ ~ ~ / ° Plpe Flowing Pipe Pipe APEX NC 27502-7181 ~ / I ! + ~ ` ~ ~ ~ EASEMENT D ~ ~ i / Upstroam Drainage Discharge Full Diameter Length pipe li D760 02 58 4553-000 / _ I Rim Inbt Aroa Q10 Capacity D L Upper Inv. .Lower Inv. Slo - i \ V ~ I I i ~ 1 ~ 68 ~ ~ ~ ~ N I R-30 From To (iop of curb) C (oc) (cfs) (cfs) (in) (ft) Elevation Elevation (9~ - _ I 1, ~ ~ ~ 1 ~ (6., ~ ~ I \ I ~ ~ ~ I ~ I N I ~ CB-1 ~ CB-2 ICB-1 452.46 !0.62 0.29 1.30 11.37 15" 42 ~Ds 446.50 3 10 t ~ - - ' - - _ _ - - ~T.- - - - ~ CB-2 451.02 0.62 0.80 3.58 5,56 15° I 27 ~ 446.30 I 446.10 0 74 I ~ - CB-2 , CB-3 I _ ~ I CB-3 'CB-3A ICB-3 457.02 0.75 1.01 4.71 13,16 15" 135 44590 ! 440.30 ~ 4,15 - - ~ ~ . 9 ~ ~ „ ~ I ~ I i ~~I -~ilr CB-3A ;FES-38 tC8-3A~444_05 0.70 1.27 6.62 11,09 15" 86 ~ 440,2D ~ 439.30 1.05 ~ ~ ~z2+oo ~_;,~I_- ;~~+AO_.___ ~ rt ~ ~ ~ A V ` f, I I 1 I I I~ I- L" ~ wok I I l ~ ~ ~ ° ~zQ+ao. ~ -.,~;~+oo_ r,y4,_ . ' ` I I 14~ I I I I ~ ' - --r-- - _ -I - 1 ~ , ~ _ r.. D.~.00- . . - ar, ~ _ _ - - - - 4 - - ~CB 4 ' C9_5 ~ CB a 460.10 0.7~! 0.12 D.65 4.92 15" 60 55.70 455.30 0,58 I . _ - - - ~ \ti ~ ~ ~ I I I I' I I I I sue- - - 58 455. ~ 3 ~ - _ ~ r +.a., CB ICB 6 CB 5 459.75 10.85 ; 0.26 1.51 7.59 15" I 20 454.40 1. ,8 - - I t`r ICB-6 ' CB-7 ICB-6 458.40 0.90 ~ 0.34 i 2.03 I 10,52 15" 151 454,30 450.30 2,65 ~ / ~ ~ ~I I I I I I I CB-7 FES-8 CB-7 454.35 0.90 0.52 3.20 ' 5.33 15" 44 i 450.2D 449.90 0,68 I ~ ~ / 1 ~ ~ I I I I~ I I / I 1 / \ I ~ ~ ~ 1 I I ~I I I ~ - - - ~ J i 1 / 1 1 I 1~ I I~I I~, I~ J i ' i ~ ~ N ~ ~ ~ I ( lp I i / ~ p~ ~ ~ ~ I ~ ~ 1 I 'O W~ ~ I CB-9 _ CB-10 CB-9 453.43 0.75 0.18 0.97 14.44 15" 132 449.00 442.40 5 OC__ OUTLET PROTECTION SUMMARY Ice-~o ~s-i ~ ca-1o aas.a3 o.eo 1.96 ss9 8.34 1s" 45 I a39so a36.7s I ~.6~ c,, ~ ~ ~ ~ ~ I ~ ~ i ~ I t ~ 1 ~I V I I I I l I l l --~!I I - v, CB-11 CB-12 CB-1i 442.98 0.60 2.07 7.37 12,84 15" ~ 129 a38.60 _ 433.50 3,95 ~ W -i _ ~ / l I ~ I I ~ ~ ~ I I, Iv I I I I I\ I / ~ I ~ 1 I I I I~ I~ I I I 1 1~~ FES-3 FES-8 EES-21 ~ CB-12 ~CB-13 !CB-12 437.96 0.50 2.67 9,53 12.64 18" 76 _ I 433.10 432.DO i_ 1.45' v i ~ I \ I I I I I 1 1 IIIII~II ~ / ~ ~ I / I I I I I~ I I\ I l~ I I I ~ ~ l / l I I I I I ~ 1 I I C I I'~ I I I ~ r CB-13 CB-13A .,8-13 436.72 0.43 3.80 13.04 16.61 18" 8 431,90 431.70 I 2.50 I ~ 8'LX8'WX22"D 5LX7'Wx9"D 30'LX34'WX22"D ~ - CB-13a ICB-14 ICB-13A 436.72 0.43 5.38 18.35 21.82 24" 27 431.20 430.95 0.93 ~ ~ C1ASS B RIP-RAP W/ CLASS ARIP-RAP W/ CLASS 2 RIP-RAP W/ / 45 ~ ~ I / 1 i ~ I~ i I I I ICI I ICI ~ ~ ~ I I ~ ~G! I I I ~ ~I I ~I I I ! LINNEY, ERIC G & SANDRA J ~ ~ FABRIC LINER FABRIC LINER FABRIC LINER ~ ~ CB-14 FYI-15 CB-i4 436.72 0.65 5.63 19.52 59.94 ~ 24" 129 ~I 430,75 421.70 ~ 7.02 „ G___ 3001 vAN cocH JANIF ~ 146 ~ ~ 4 ( 43 I 4~ ~ ~ ~ j 141y ~ j I I I d50=6' d50=3 d50=23" YI-15 _ICB-16 IYI-15 425.50 0.50 5.95 20.68 35.55 24 97__~_429.5D 479.30 2__2.7 _ U V10=9.08 FPS V10=4,54 FPS V10=19.66 FPS ; CB-16 1CE-17 '~C9-76 424,30 0.59 6.58 23.36 27.05 24" 49 ~ 419.10 418.40 I 1,4~ APEX NC 27539-5774 / ~ ~ / f \ I / ~ ~ / ? ~ _ I ~ i / j 1, - - -r-- 0761504302 ~I CB-17 ~ Y1-18A I C8-17 425.60 0.67 6.92 i 25.10 45.19 24" 138 418.20 _ 412.70 3,99 _ / ~ ~ ~ ~ i / / ~ ~ / ~ ~ ~ I ~_I _ _ YI-18A CB-18 IYI-18A 417.00 0.49 6.92 1 32.17 36.45 30" 101 412,20 1 411.40 0,79 R-40W i EES 37 FES 40 LES-44 - - ~ / ~ I I ~ / 1 ~ I ~ ~ I ~ / ~ ~ ~ ~ ' ~TORMWATER MGMT. - I CB-18 ICB-19 lCB-18 418.29 0.70 9.00 32.58 38,26 30° 126 41090 409.80 i _0.87 ~ 5'LX7'WX9"0 8'LX10'WX22"p 16'LX18'VJX22"0 ti ~ON0~1- - ~ ~ ~ ~ l ~ i / o I GLASS ARIP-RAP W CLA55 8 RIP-RAP W/ CLASS BRIP-RAP W/ CB-19_ CB-20 ! CC_B_-19 441_5.33 0.51 12.06 45.50 57.37 36" 27 409.10 _ 408.90 0,74 _ ! ~ F I FABRIC LINER FABRIC LINER FABRIC LINER ~ CB_-20 ES-21 CB-20/415.33 0.70 12.53 47.88 158.67 36" 83 4D8.70 404.OO S.fi6_ ~ ~ I ~ ~ i ~ ~ ~ / ~ ~ ~ ' EE DETAIL ON ANT. 2§.- - I ~ 1 I _ I d50=3" d50=6" d50-13" IYI-~ ~ ' IYI-22 443.5D 0.45 1.28 4.16 4,83 15" 161 441.30 i 440.10 0.56 V1D=3.98 FPS V10=12,07 FPS v10=12.63 FPS ICB-23 '~~_10 ICB-23 445.54 0.75 1.70 6.43 ~ 6,71 ~ 15" 37_ 440,00 439.60 1,08 ! ~ ~ ~ ~ / ~ ~ _ _ - I I I I I 1' I T ~ ~i 7 ~'~CB-2a ICB-13A ICB-24 437.63 0.55 D.46 1.83 8.35 15°~_ 72 433,20 ; 432.00 1,67 I - - A ~ ~ ~ , ~ ~ 1 i i _ . ' ~ ' ~ ~ ~ , CB-25 CB-_26 ~_CB-25 431.78 0.75 0.19 1,03 5,56 15" i 27 427.35 ! 427.15 ~ 0,7a FES-34 FES-31 (INLET PROTECTION) ' CB-26 ~~ce 17 !ca 26 a31.78 o.6s D:v 1.ao 11.aa 1s" 133 a25~so ? 421.1a ~ 3.38 - - i - - - 28'LX12'WX22"D ~ 15'LX12'WX22"0 ~ CB-27 IICB-28 ~~8-27 425.54 0.60 1.41 6.11 6,36 15" 31 421,20 J 420.90 I 0,97 111111111/Nq/~?? r----1~ I CLASS BRIP-RAP W~ CLASS BRIP-RAP W~ ICB-28~ 29 , CB-28 426.25 0.80 1.61 7.27 8.57 15" ! 119 420.70 ~ 418.60 ~ _1.76 - . '~N CARO 1~1 ~ N°'°°°°° eie FABRIC LINER FABRIC LINER ~ CB 29 GCB 30 .C9 29 422.97 0.70 1.78 8.12 10.85 15" 181 418,3D 413,20 __2,82 d50=13° d50=13" C n B-3~ ICB-19yCB-30 417.90 0.55 2.08 9.32 13,65 18" 118__ 412,90 ~ 410.90 1,69 SINGLETARY, R08ERT G & LISA M GIU_IAM, MICHAEL E & ANNE F ti,~ • V10=13.60 FP5 ~ - --T- - - 8117 NETHERLANDS DR RALEIGH PURDY, MORRIS FORREST & DONNA Q~°°~ ~ NC 27606-9605 Y TT M 8205 NETHERLANDS DR 8213 NETHERLANDS DR RALEIGH NCy QQ~ 9~ i i FES-31 CB-32 ' - 0.40 13.48 38.93 73,93 42" 37 409,00 0 0 G,54 ~I i \ ~I C8-32 ' CB-33 ICB-32 416.37_ 0.80 13.76 40.55 86.54 42° , 27 408,70 408.50 ~ 0.74 I D761.04 50 5535-DOD BATCHELOR, ALAN D & L NE E RALEIGH NC 27606 9659 YOUNG, JA50N E & SHANNON R 27606-9659 ~ SEAL -`L-- r---- CB-33 ~ FES-34 ! CB-33 416.37 OJ5 ~ 14.02 41.96 153.57 42" 60 408.00 406.60 I 2.33 R-40 8201 NETHERLANDS DR RALEIGH 0761.04 50 5899-000 8209 NETHERLANDS DR RALEIGH 0761.04 51 5188-000 NC 27606-9659 R-40 NC 27606-9659 R--40 ; 234$4 ; ---~---fib- ~ ~ ~ 0761.04 50 5773-000 0761.04 51 5084-000 % ~ ;e R-40 ? . ~1 CB-35 ICB-36 iCB-35 421.04 X0.70 0.20 ~ 1.01 5.56 t5" 27 416.90 I 416.70 I 0.74 I -r- -1 - _ -I ~ CB-36 ',FES-37 iC8-36 421.04 '0.80 0.32 1.70 5.56 15" I 27 41660 416.40 I 0.74 qp~ ~ 111 - ~ I rt-- i I I I - - I---7 --r------ -i ,ti EY D / ~ +~u1111 ~ Y - ~ - - II 40 4 1 7 141A CB 4. Y~ 41A 411.50 0,42 3.79 11.49 22.77 18" 134 ~ 800 ' 0 . 0 4,70 ~ ~L \ - - --r---~; CB-41 ICB-42 !CB-41/406.14 0.48 _5.13 16.13 17.26 18" 37 401.60 400.60 2.70 CB-42~YI-43 ~~CB-42 405.36 !0.75 6.01 I, 19.78 22.58 18" 143 398.1D 391.50 4.62 I_ ~ YI-43-_~iJa-44 ''.'r!-43 395.00 X0.50 ~ 6.2t_~ 20.50 24.78 24" 75 _391.00 390.10 i _1.20__ PPROVED A ~ JB 44 _ FES 44A ~ JB-44 394.D0 0.50 _7.10 25.19 27,89 24;'» 33~ 389.90 389.40 1 52 _ I~~ CB-45 ICB-42 ICa-45 402.92 0.50 0.62 2.24 a.88 ~ 15 106 398.90 ~ 308.30 ~ D57 _ TOWN OF CARP TION SHALL BE _ ~ ~ ~ ~ - KING, EDWIN M & DOR CB-39 I J8-40 CB-39 411.30 0.73 0.89 4.69 5.13 15" 143 4D7.10 406.20 0 63 I =DwiN M & DOROTHY L ALL CO STRUC ~ - -"r - 8113 NETHERLANDS DF ~ JB_40 IJB 44 JB-4o/411.50 0.43 0.89 4.69 6.16 15" 143 405,20 391.00 9.93 ' ~ - j ~ ~I RALEIGH NC 27606-5 IETHERLANDS DR Approved by -Date GRAPHIC SCALE IN ACCORDANCE WITH H NC 27606-9605 Plnnninn ante en n 3n an »n ('I IRRFNT TnWN nF CARY U/b1U4 JU b4/y-UVU - R-40 4 Ou b4 y-uuu Engineering Date STANDARDS AND 8 $ NOTES: Q 1. ALL PIPE SHALL BE CLASS III RCP UNLESS OTHERWISE NOTED. 2. SHOWN IN PIPE SIZE COLUMN DENOTES 0-RING GASKET PIPE SHALL BE USED, 1 inch = 60 it. SPECIFICATIONS. a v - No. Revision Date B Designer Scale 1. PER TOC 15T REVIEW 10/23/04 BDH W&R 1"=60' Sheet No. n 1 7 Drawn By Date GRA[ 7 1 GRAYHAWK SUBDIVISION L 4-7-04 A -4 Checked By Job No. 9 SOUTHERN SECTION ENGINEERS 1 PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com BW 204028,00 MAKE COUNTY CARY NORTH CAROLINA j I 1 ~ ~ i ~ ~ I I V I ~ \ ~ ~ I i \ ~ SORGE, JOHN P ~ LAURIE K ~ GONZALEZ, RI~ARDO A & PATRICIA F ~ \ ~ N JR & MARY R TRUST ~ N HEIDE WAY 5433 DEN HEIDER WAY DAVISON, DAVID SCOTT & SUZANNE C I TAYLOR, ROBERT W JR & MARY R 5505 DE R 5425 DEN HEIDER WAY ~ 5409 DEN HEIDER WAY WAY ~ ~ RALEIGH NC 2 606-9560 RALEIGH NC 27606-9584 ~ ~ 1 _ D761,03 41 430 -000 RALEIGH NC 27606-9584 I RALEIGH NC 276D6-9584 0761,03 41 41 000 )6-9584 \ \ 000 ~ R-40 R-40 ~ I 0761.03 41 4789-000 i 0761,03 42 5201-000 R-40 R 40 I ~ ~ ~ ~ f~ ~ ~ ~ CHEN, DON CHI & CHING HUI SIGMON, GREGORY L & BETSY A THOMAS SIGMON ~ ~ \ 5429 DEN HEIDER WAY RALEIGH NC 27606-9584 5405 DEN HEIDER WAY \ \ 0761,03 41 4569-000 RK P & TER SA I / R-40 PHIfER, MA E RALEIGH NC 27606-9584 0761.03 42 5424-000 ~ M 5421 DEN HEIDER WAY ~ R-40 RALEIGH NC 27606-9584 ~ ~ - ~ 076L03 41 4987-000 V'y ~ , _ i ~ ~ R-40 - ~ ~ _ _ - - ~ 1 ~ ~ 1 ~ _ - - ~ N~ i y \ ~ _ ~ ~ ? ~ ~ ~ ( m I . . A I ~ ~ A ~ _ _ ~ ~ \ ~ I ~ N00' S 51 E ~ - { 105~4.18''~ 1 ~ i; i ~ I 1 1 I I f~ w N ~-are-~~ ~ ~ 1 ~ 4 _ O I i' 1 N GN ~ 1 ~ ~ 4 i ~ ~O ~ \ ~ ~ ~ 412 ~ ~ ~ ~ , iii/,~ ~i ~ ~ ~ aicNic ~ / ~ _ ~ - - _ ~ I / _ , I~ ~ ~ z ~ ~ ~ v ~ ~ i .i ~ Z ~'1 i Z. ~ ~ ~ ~ ~ ~ I ~ D ~ ~ ~ Pi we ~ ; ~ ~ 1¢ ~ ASPHALT GREENWAY TRAIL - rA6LE ~ i - l 1 ~ ~ i i ~ / I l r v N 1 ~ ~ W ~ ~ 1 N O iN N ~ -A ~ i ~ - - - ~ ~ ~ ' / E \ ~ ~ ~ / ~q~ ~ Pf E E ~ ~ ~ N ~ r,^, ! / O ~ I ~ ~ ~ N z z z~ ~ i 311 14 ~ ~ 15 I ~ w 1 ~ _ / i i ~ I~ I ~ ~ / yr' !Z f~, ~ - , ~ ~ l Q. I~ z rn I ~i U ~ ,1 m I 'm \ ~ I ~ i iZ ~ ~ ~ N ~ ~ 1 f ii i , Z ~ ~ ~ i - i ~ ~ ; frl N i I W ~ ~ ~ Q i / _ I ~ ~ ~ i I i i I` w ~ I ~ l ~ 1 - ~ ~ ~ ' ~ ~ ~ ~~V/ ' E p. ~ / o~ W NA , 0 dRAI E ~ ~ / ~ ,,i..~~~ s v, ESMT. ~ m i ~ ~ ~ ~ o _ N I ~ I ~ ~ ~ 1 ~ N I I i W ~ ~ , / % i / E i i / ~ ~ ~ ~ j J e / ~ ~ (A ~ ~ ~ I / ~ - -STEPS ~ x ~ E a~ ~ F ~ ~ ~ ~ , _ ~ ~ - _ ;.,A ; ~0 / ~ p0 9 ~ ~ i / ~ ~ ~ _ ~ , f - - 4' ~ ~ - _ - ' j ~ e e - ~ / ~ It i ~ ' . W ~ _ J d•, e t I . , P' ~.A~ ' ~ VAUGHAN, IRVIN R JR &EILEEN 0 ~ ~ E~ 5212 LEIDEN LN ~ ti ~ ~ ~ r ~ , ~ ~ i RA EI H NC 27606-9553 ~ ~ ~ /a~ E ~k ~ ~ 07fi1.03 42 8629-000 E E , R-40 n ~ I I ~ W 'i m , ~ - w ~ ~ \ Al R WATER ~ ~ ~ ~I i ~ I ~ CHED AREA IS 5 d M ~ \i II ,f\E • f E f f ' i ~ W - A ~ ~ r ~ \ ~ i ~ N ~ `y ~ ESS & 'MAI EN NCE ESMT; w m ~ 23 LEVEL \ ~ ~ , w Y + 1 N n°~ ~ I% ~ ~ ~ SPREAD R ~ I ~ i ~ P p. ~ ~ • 1 - v, , ~ ~ a ) i ~ ~ E ~ ~~i. ~ E i - p, k ~ I ~ ~ , ~ _ / C~ 0- 0 ~ ; - - ~ i- • • , 'A ~ 1 ~ i W ~ 1 i ' ~ ~ 0 S 0- • 8 ~~1SPH T Gf~ ENW~Y TRAIL\ ~ ~ _ i ~ ~ ~ ~ f ~ .'L ~ 6 >2 ~ ~ ~ c V ~ PROPOSfGD ;ST PMWATE~ ~ ~ I' _ < ~ r / / t f ~ ~ ) PbND ~ , ' / i I ~ ~ o , ~ ~ ~ ~ SEE ©ET IL q 'f ~5 ~ - I ~ ~ ~ f f I CJ ~'Fl ~ ~ I I ~ v ~ ~ ~ ~ ~ I; I ~ ~ I ~ ~i E ~ ~ 2 ~ (F` r ~ ~ 1, ~ ~ ~ I f I I i.1 ~ i i f ~ 11 A ~ / ~ i ~ ; ~ ~ ~i f v ~ ~ l,, , ~ ~ / ~ f I ~l I I ~ ~ ~ ~ / e rv \ f ~ ~ Imo, ~I l \ 1 1 i i v ~ 11 ~ I l I i ~ ~ 1 ~ _ ~ I I I ~ i .i ~ ~ / i / ~ ~ VAUGHAN, IRVIN R &EILEEN 0 r I 1 ~ E 5212 LEIDEN LN i i I, I I ` 1 I II i I 1 i v , i I~ i I~ 20 ~ ~ ~ ~ ~,1 ~ w I I ~ I I I ~I ~ / ~ E RALEIGH NC 27606-9553 / _ I ~ E f ,F E E E E E E E E 0761.03 42 9656-000 ~ ' ' ~ t , < • < < F < ~ ~ v a ~ I I I I ~ ~ II 'I I a i i% 1 I • I t~ F e E E t E f i . E E R-4O I ~ / ~ ~ f t f E t F I' ~ ~ } I I F f ~ ~ ~ r y ~ ` ~ ~ 1 I I ~ I~ ~I `E ~ r ~ t < / ' ~ f I, ~ ~ ~ I I I I I I ~ ~ % ~ a ~ ~ ~ ~ ~ I ~I I i I I~, ~ I, I, ~ I ~1 f f ~ \ E ~ , ~F f - - _ 1 i ~ ~ ~ a i ~ ~ vI I ~ I I I f _ ~ ~ ~ ~ ~ ,I < i ~ / A i g ~ I i i I I I I I! ~ _ I i • t i ~ ~ ~ E s _ - - - 1 f ` ~ ~ ~ ~ I v J J ,f I ~ ~ ~ ~ I i ~ I ~ ~ I P E ~ E E i ` ~ ~ ~ I I .I I ~ , I f f - ~ ~ ~ i I I I X i l I f i O~ . - ! ~ I v 1 \ ~ ~ ~ I X ~ I ~ ti J~ . ~ _ ~ ~ ~ ~ ~ ~ ~ I ~ I I; I, I ~ ,f f,, f 1 _ \ f/ f f~ f f f ~ ~ f J \ C O \ ~ +1 - i f ~ e f e r r OG / . E ~ . J ~ .t ~f e E 0 ~ rn ~ ~ f n ~ f ~ ~ ~ A A V ~ N 7 b~e ~ ~ E ~ F F f f t E E E E h y~, N < E E E O\ ` E V~ HATCHED AREA IS ~T~RMWATER ~ ~ ~ ~ ~ ~ ~ I f f ~ y~~~, ~ ~ ~ f f P E f f f f / ~ E E E ti F~l ; E f E E E f f ~S-&-~fiA~TENANCE ~ESt~I . . , ~ ~ ~1 ~ ~ f f / \ V ~ ~ ,J / f f f f f f f f f f ~ ( ~ ' ~ ~ ~ V ~ \ ~ ~ ~ ~ ~ ~ ~ ' r , f f f f r ~ r f , f E E E E ~ ~ y E- E Q ~ 0 m RODGERS, WILLS P& SUE H ~ ~ / ~ ~ ~ - - - A ~ ~ ~ ~ ~ ~ ~ f ~ f f f f ~ f E ` ' " ~ ~ ' E ~ JR 8205 BELGIUM DR E ,~EE~O< ~ EE ~ 1 1 ~ I ~ \ ~ ~ , ~ ~ ~ r ~ ~ ~ f f f f f. E ~ ~ ~ ~ RALE GH NC 27606-973 E E ~ < _ ~ 0761.04 52 2608-000 I N I ~ ~ ~ ~ ~ ~ ~ ~ f f f , f - ~ ~ v ~ A ~ ~ ( s. ~ ~ ? ~ f f f f ~ ~ f ( « f ~ ! ~ i E ~ R-4o ~ APPROVED ~ \ ~ e f I - y _ f f f f. f f ~ i ~ A ` ~ f t f E E f E ~ / O F ' E ` ~ ' i ~E~E ° i , ti° ~ TOWN OF CARY. . I I I I - A ~ ~ _ -1~0 ASPHAL ~G E WAS' .QTR` IL' ~ ~ ~ ~ ~ f f f F f f ~ f ~ I I - I I 1 I ~ ~ ~ ~ rt~r- ~ yR~ ~ rA f~ ~p ~ f f f f f ~ ~ , ~ f f . f f t i E ~ E ~0 d. <f. Ef~iEiE ~E ~ ~ ~ Approved by Date - ~ ~ ~-y ~'~i ~ I I ~ I ~ I I f I ~ I I ~ ~ ~ I ~ ~ ~ - _ - Q . . I~ ~ . i E / ~ Planning Date I ~ ~ ~ i f f f ~ ~ ~ ~ f p _ O R7 v % I I I ~ ~ f f E f f ! K t tE t \ ~ / f ~1 ~ I ~ I ~ I ~ ti a v E~ ~ E E ~E E ~ 0. ~ ~ Engi neerina, Date -BL-0 _R IC I' S 0 N I I ~ ..A i ~ / if ~ f e f f q~ F/ f , I I I . i~ I I I I ~ ~ ~ FLOOD LIN P, , f .f ` f d~ f f f i ! Y L ~ f , E . ,a O E ..E. E f ` f ~ ` \ . ~ I' I I I'.~ I I I I v I 1 ~ ~ A _ ~ f f f f f f f f 'I 1 I I ~ I I~' I I - ~ ~ ~ ¢o~~ ~BOt~ 100 N FL,O~ f ~ f f f r E t E / ~ ~ - E E ~ / ~ ~ - ~ ~ ~ ,R., D'~" f f I I ~I I I I ~ I I~, I~~ I ~ ~ ~ ~ f f F i r f - f E - <E I t ~ `I~ I ~I ~ ` ~ ~ ~ ~ f~ f _ .v. f f I I~ I i I ~ ~ ~ I I I I ~ I I~ - I- ~ i I I ~ ~ ~ ~ ~ -e+~~-- ~ ~ ~ ~ f f 'A/l . ~ f f ~ - - ,E ~ I~ I I I f f ~ ~ ~ f f t t E E F .f f/ f f f ~f/ I I I I i i, ~ I f f f f f ~ f f f~ f . f f 1 I I ~ ~ 1 I i I I I, 1 I I' - ~ ~ f f f_ f f h I i,~ f~f, ~ ~ f _ 1 I I I I I I I I ~ ~ ~ ~ ~ ~ f, ~ f f~ f a, I I' I I i. I I I ~ AI I~ l I ~ ~ ~ f f f f. F I 1 \ f I I, I ~ ~ f f f f f~ f f f ff f ~ ~ I ~ ~ / Ill~al fi ~ i I ~ ~ ~ f b / f~~ ~ f t f L f h~ t f ~ I~ I I I I` I I P I I~q . - / ~ f F~ ~ ~ f f F f f~ E I I~ 1~I I I ~ ~ f f f`f f A ' a`1 i t ~ / SFr f ~ f;~ f f E f < f < f f EI f ~ I I I -I 1.I_ I ~~I~I~ ~ ~ ~ ~ I ~ ~f. f I I I ~h I I~ . ~ ~ ~ . ~ ~ f< l`E'XISTINGf f f ` f f f f f f ~ I E f t fF. ~ _ ~ '~9 o i ~ ETLAN~,~ ~ f ~ f f f ~ . GRID NORTH (NAD'83) I ~ f f f f f~ ffE 5 _ i I I ~ I \ v ~ 1' y i ~,I ~ I ~ ~ ~ ~ f f f~~ f f . \ P8 160, PG 63 MATHESON, WILLIAM K & SHARON L \ \ \ ~ E f F ~ E f c f < < f f f 8201 BELGIUM DR ~ E RALEIGH NC 27606-9731 GRAPHIC SCALE L \ ~ t t < r e E t e e ~ L 1 / • ! e f f c f f t f ~ ( c f OPOSED STORbIW~T I ~ I.y I ~ ~ ~ ~ , f f f < E < < E 0761.04 52 3687-000 ~ 60 0 30 60 120 I A~ ~ A ~ v / 11 A r f t f e ~ f , ~ f c f t f ~ f f f f f r f f f F E P E E R-40 X f f f t S E DETAIL SHT. ~5- ~ -I I ~ I I I I I~ ~ _ ~ ~ ti ~ ' ~ . ~ - I`~~~I I~ ~ ~ ~~F f f E t z f f f E f I ~ I I i ~I-1' 1. I T +,I 1'~ ~ ~ ~ ~ f f f ~ f ~ - f ~ - f ' ~ E E f ~ 1 inch = 60 ft, ~ A ~ A f f< f f f E _ _ ~ ~ ~ ~ ~ A ~ f f ~ ~ f f r < f f E E . - ~ ~ \ < f I ~ v f ~ f~ ~ f f •f f i . eee~geewpy • CO ,e CA ~N RD 801'00 03°W J 1 / 2172.52' / I e` Q`L O~ae'9 Se i tQ` Z PURDY, MORRIS FORREST & DONNA B I I~ 8213 NETHERLANDS DR IOMBARD, JOHANNES S & .Q ~s SEAL il~ RALEIGH NC 27606-9659 SONJA 8221 NETHERLANDS OR I - - - • $ 23484 0761.04 51 5188-000 RALEIGH NC 27606-9659 R-40 0761,04 51 5531-000 s ~ • ~ : R-40 / '~.~I ~P •~»..a~P~ 4e,'44( r• ~ ~ KASPER, PETER L & MARY 'M Y O~eee~ WILLIAMS, KAY MARIE i ~ epee I I I E 8225 NETHERLANDS DR 5~ 5416 AMSTERDAM PL ~ ~ / RA IHN Ri LEG C 27606-9659 RALEIGH NC 27606-9708 0761.04 52 8141-000 MOUNT, J DAVID & GAIL L ~ ~ - - YOUNG JASON E & SHANNON R NASON, LAWRENCE FRANCIS & ~ / 0761.04 51 5772-000 0. ' MARY JO NASON R-40 R• R-40W 8113 BELGIUM DR i ~ 8209 NETHERLANDS DR 8217 NETHERLANDS DR I ~ ~ RALEIGH NC 27606-9659 RALEIGH NC 27606-9729 RALEIGH NC 27606-9659 ~ 0761.04 51 5084-000 0761.04 51 5384-000 R-40 ~ 0761.04 52 5697-000 ~ E ALL CONST UCTION SHALL BE R-40 ~ ~ R-4o O IN ACCORDANCE WITH Ta ( , ' C~ RRE T TOWN OF CARY CU N I?-1 cTe~.ineQnc er.ln I/ 11 14L-11 % I \V ll I \ I N11-1 I SPECIFICATIONS. m I i a No. Revision Date B Designer Scale PER TOC 1ST REVIEW 0/23/04 BDH W&R 1 =6G' Drawn By Date GRA[ GRADING & STORM DRAINAGE WITHERS RAVENEL Sheet No. AL 92G4 GRAYHAWK SUBDIVIS10"N Checked By Job No. a WAKE COU CARY ew zoan ~2s.GO NTY NORTH CAROLINA NORTHERN SECTION ENGINEERS I PLANNERS I SURVEYORS 8 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-6008 www.withersravenel.com i II r ~ ~ - . - , ~ ~ ~ ~ i ~ o ~ - - _ ~ , , r ~ ~ i o i ~ i ,l i ~ _ i ~ I I ~ - i - i o _ i ~ _ i ~ i - ~ ~ ~ ~ / ~ I ,i I ~ / ~ , ~ I, I I ~ ~ ~ , ~ ~ S _ - ~ I '4 ~ I1 ~ A ~ ~ ~ ~ I ~ ~ ~ . ~ ii i A _ , _ ~ ~ - ,~~r 1 'I ~ i ~ i ~ - ~ ~ i ti _ ~ ~ ~ i ~ ~ ~ ~ I ~ ~ I ~ ~ I a 1 ~ - ~n ~ ~ I ~ , ~ i i ~ ~ ~ 1 / I s, / ~ ~ I ~ ~ ~ i I i ~ I ~ ~ I 0 - - - - - - - - ~ ~ I I ~ ~ I ~i g - ~ ~ ~ ~ i ~ ~ ~ c ~ ~ DDp~DDDD~D J ~ ~ ~ ~ I ~ ~ i I ~ DP DD ~ ~ `1 IA ~ a ~ ~ ~ ~ n ~a ~ \ ~ j L ~ / D C D D ~ D D D i ~ I ~ 1 ! ~ ~ i a ~ al ~ i D D ~ / / ti. DD D D l c, D 1 4 ~ <U ` ~ ~ ~ ~ ~ Q ~ G ~ \ / ~ ~ \ ~ a v ~ ~ D ~ ~v~a ~ ~ i i pp a a . a ~ c v bC~' c - ! ~ D D ~ I, ~ ~ a~ ~ 4~ ~ 4 ~ ~ I' 4 A 4 I r p C+; r ~ 4~ ~,4 \~D ~ U~ ~ ~ \ DD i l ~ V ~ Q 4.,a ,~v~~v ~ DD DDDp Q~ ~ it ~ ~ ~ ~ ~ ~ 4 4~ C i DD ~ 1 DD ~ D _ li 4~4 '~4 'vd~ \ ~ ~ ~ 4 ~ ~ r _Z ~ ~ ~ D D , D D[ I ~ `V ' t ~ ~ ~ 4 ~ ~1(( ~ ~4 ~ ~ A I I ~ ~ ~ W - ~ ~ D~ D ~ V ~ ~ Q v ~i i ~ C ~ 4 Q ~ i 4 ~ ~a~ V D~C DDI \ ~ J \ 2} Q ~ ~ ~ ~ a ~ D b c ~ ~ ~ D D~ ~ ~'4 4 ~ 4 ~ ~ G _ 'J ~Q ~ V A D D ~ V DD \ _ ~ - Q_ ~ V 4 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ W D ~ D ` (.>,1 ~ ~ (r~, ° D cW~ CO (D ~ ~ ~ \ v~ DC9 ~ ~ _ - ~ 4 .C4 4 ~ ~ ~ , ~ D D D ~ ~ I ~ ~ ~ 4 ~ ? ~ 4 C . - ~ ~ i 4 V ~ D A p D~ ~ ~ V ~ ~ i Q Q~ i ~ \ ~ ~Q ~ ~ ~ ~ ~ ~ V ~ > DDD A ~ ~ ~ I D D ~ Q ~ \ b o` ~ ~ ~ ~ ~ Z9 ~ ~ D ~D ~ ~ D'~ ~ , n I D ~ D ~ I C \ ~ O ~ ~ ~ ~ ~ \ ~ D \ ~ > ~ C A v~ ~ D \ ~D \ \ i ~ - ~ °va - ~ A \ K `'1 ' ~ ~ ~ ~ - ~ ~ ~ V D~'D ~ DCC ~ ~ ~ ~ G D \ ~D D ~ D \ D ni~~pD ~ DDDD~D~ D D ~ ~ a ~ ~ , 4 ~ ~ D DD p ~DG p ~ D ~R n ~ c ~b c` a v 1 A \ ~ ~ a ~ u fi ` ~ ~ '.Q ~ 1 \ ~ ~ 4 4 QQ~g a4 ,9 .~1~ \ \ ~ 1 ~ 4444 1 ~ ~ Qom, ~ A ~ ~ ~ i _ \ ~ 1 - - ~ ~ A ~ ` \ ~ ~ \ ~ \ ~ 1 ~ TYPICAL PER 50 LF ~ ~ \ \ ~ ~ ~ ` ~ ~ ~ ELF OF A UATIC SH ~ Q \ ~ 1 ~ ~ ~ EL.=398,0 ®POND 1 ~ ` ~ ~ ~ i EL.-388.00 POND 2 A ~ ~ ~ ~ ~ 1 ~ ~ ~ A ~ ~ - ~ ~ ~ 1 ~ ~ ~ , ~ \ ~ ~ ~ ~ 1 ~ ~ ~ ~ ~ \ ~ 0 0 0 0"0 0"0 0"0 0 0"0"0"0 0 0 o`o°c \ ~ I ` u 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 FRAGRANT WATER LILY ~ O" ~ ~ 2. O 0 0 0 0 ~ ~ 0 ~ ~ ~ ~ ~ ~ A A ~ / ~ ~ O 0 ~ O~~ ~ ~0 ~ 0 ~ ~ I i~ ~ j ~ + + + O 0 O 0 0 0 O 0 + + + + + + + + + + + ~ ~ ~ ~ ~ ~ ~ w 0 0 0 0 0 0 40 PICKEREL WEED _ + + + + 0 0 0 O + + + + + + + + + + ~ ~ ~ ~ ~ i i + + + + + + + + + + ~ 1 ~ ~ 0 30 HARD STEM BULRUSH ~ / ~ C~ 1 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~0 V ~ ~ ~ ~ ~ c ~ I ~ ~ ~ ~ ~ ~ O ~ 1 ~ ~ ~ ~ ~ ~ ~ ~ I V T ~ ~ 1 ~ / ~ ~ I NORMAL POOL ELEVATION ~ ~ I ~i V ~ ~ l l / ~ ~ ~ ~ ui EL..gpp.0 ~ PoND ~ ~ 9 ~ I I l ~ l / ~ ~ ~ EL.-390.0®POND 2 i _ ~ ~ ~ I I I/ I I i 1 ~ I I / 1 ~ { AQUATIC SHELF PLANTING DETAIL ~1 I ~ t o ~ i 1 1 II o l ~ 1 I NOT TO SCALE S ~ ~ Q / I ~ ~ ~ I 1 l I 1 II 1 \ ~ I / I ,x," ~ ~ I ~ ~ I / ~ I 1 I 1 0~ n~ ~ I I ~ Ui w i 1- i i ~ ~ I I ~ l 1 i i I 1 G ~ ~ I ~ I ~ ~ I ~ ~ I I I I I l 11 I I ~ ~ I ~ ~ I ~ I ~ 0 o , 0' o ,o - M i m II 11 ~ a ~ a CONICAL ?/2" GALVANIZED STEEL TRASH RACK CONICAL 1~2" GALVANIZED STEEL TRASN RACK o a (MAXIMUM OPENING SIZE 12° HORIZONTAL) .L TRASH RACK o ~ HORIZONTAL) j MAXIMUM OPENING SIZE 12'~ HORIZONTAL)~~, ~ z N z ~ - M TOP OF DAM 396.0 - 100 YR FLOOD ELEVATION v TCP OF DAM 406.00 ~ 100 YR FLOOD ELEVATION v - TDP RISER 395.00 TOP RISER 404.50 395.00 1 J \ ~ ~ (1) 2" CIRCULAR OPENING v 390,00 390,00 Q 3'X3' BOX RISE ~ (1) 3" CIRCULAR OPENING v 400.00 __Q 3'x3' Box RISER ~ N MAL L 39D.oD 39D.DD N MAL OL " 400.00 INV DUT = 385,00 INV OUT = 395.50 STEP STEM STEM I SUP SUPPORT 4" NRS GATE VALVE SUPPORT VALVE 150 LF 12" RCP Q 0.67% 4" NRS GATE VALVE 86 Ll- 12" RCP ®0.58% w~ PREFABRICATED ANTI-SEEP COLLAR w/ PREFABRICATED ANTI-SEEP COLLAR r i i i r - ,Yv; ~ ~a CLASS II STONE OUTLET DISSIPATOR CLASS B STONE ~ OUTLET DISSIPATOR 3000 PSI CONC F.': i = PSI ~OPICEEiE 2TW x 24'L~x 22~~D 6,~'~6 5x1.5 14'W x 12'L'x 22"D 3000 PSI CONCP,ETE d50=13" d50=13' vio = 11.5 FT/SEC •~••p•uugy~i V10 = 11.G FT~SEG 2 SECTION ~ •~~j0~0jsy` ~ PO~1D POND 2 SECTION • pct ONE s N.T.S. ~ ~ 9~ • . . Q AL • N.T.S. • ~ ~ ~ i e s 23484 . ~ • ~ c~l • APPROVED P ALL CONSTRUCTION SHALL BE EY TOWN OF CARY IN ACCORDANCE WITH NT TOWN OF CARY A roved b Date - CURRE pp y STANDARDS AND Planning Date SPECIFICATIONS. Engineering uote - a I a No. Revision Date B Designer W&R Scale L INCLUDE AQUATIC SHELF PLANTINGS 11/12/04 BQH WITHERS RAVENEL Sheet No. Drawn By Date GRAYHAWK SUBDIVISION STORM\ )RMWATER POND DESIGN DETAILS ENGINEERS I PLANNERS I SURVEYORS 25 AL 9204 7 Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469.3340 fax: 919-467-66008 www.withersravenel.com CARY NORTH CAROLINA ° ew 204028 WAKE COUNTY i \ I ~ ~ i ~ l' I ~ i ~ ~ - 1 1 ~ ~ \ \ ~ I - I 1 ~ I ~ ~ ~ l ~ l I ~ ~ 1 \ ~ I a I ~ I \ I i _ ~ ~ ~ ~ I I 1 0 ~ I 4 ~ I ` / / - - i O Y V I I 1 h I I I I / T - ~ _ ~ I 1 I I ' I W ~ I ~ I / ~ l ~ ~ ~ i I ~ \ I ~ I ~ r~ l 1 I f'1 I I v ~ ~ l N \ \ 1 I ~ I \ \ ~ ~ 1 I i / , ~ ~ i ; ~ 1 - •I 1 v v I I v v i r ~ 1 I ~ ~ / / - _h-- ~ 1 I ~ I I ~ I ~ ~ I I I 1 ~ i~ / / ~ I .I I - I ~ ~ 1 I - ~ / / ~ ~ I I I / - - - i i ~ / ~ ~ ~ • I I I ~ / / ~ ~ / / f / I ~I ~ I I I ~ I ~ - ~ ~ I I ~ ~ I ~ l l ~ 1 i I I I I i ~ ~ ~ I I / I ~I I 1 1 0 I I ~ 1 i ~ I i i I Qj - ~ / I I I I 1 \ ~ ~D DD b„D ~ \ I ~ \ ~ 1 % / I I I ~ I i 1 I 1 \ ~ DDDDppD I ~ ~ D p I l ~ a~ \ 1 11 ` ~ I I °a°° ~ \ 1 I \ I ~ D D~ I Dp ° ° a i \ 1 ~ I 1 ~ \ \ ~ DD~ D D l DG D ~ I q a°~°a`'° - ~ ~ ~ I V ~ ~ i ~ 1 1 I ~°q ~ I I A l l v ~C pD I q°° l \ V 1 ~ A v I v ~4 ° - - I 1 \ I qa ~ ~ \ 1 ~ \ \ DD D p \ D D D ~ / I I ° ` I l A \ ` \ y A \ ,~po D ~ I ~ V ADD , ~ \ \ D~ ~ °a° A ~ ~v ~ ~ \ \ \ I \ a° A 1 a ~ I \ \ V A A \ D ~ ~ 1 q a ~'q ' v 1 \ ~ \ I \ .a ° \ 1 a ° l \ \ ~ \Sl ~ q a I a ~l0 \ \ ~ \ \ ~?D D ° Q e` \ \ ~ D ~ A ~ ~ A I \ .a°q a°q9~ I ~ ` \ ~ ~D Dom! I~ _ l 1 D \ DD , \ ~ D D p A ~ ,nl I 1 q° ~ 4° 4° / ~ ~ ~ V A \DDp 1 p pp ~ I I \ 4 `(J \ \ 0'4 ~ \ ~ ~ ~ I ~ V A 1 ~ \ D®p ~ D~ \ I 1 ° ~q O p ~ ' I ~ \ V A I q~ \ \ ° 4 ) ~ I \ V ~ ~ > f~D ~ D~ C ~ ~ D\' \ I ° A A V ° q q I ~ ~ ~ ~ A A V A \ (~J D p D \ ~ 1 I L- ~ ~ 4°At A V A \ °°G ~ I I \ ~,D ~ DD~\ W ~V V A O' ~ v p DCO ~ c0 c0 v - - 1 I ~ 4 4 \ / ~ \ \ \ °4 \ \ \ \ °q / \ \ \ \ D D~ ~ D \ Gp Q ~ \ 4 I ~ _ \ \ y'g ~ D D ~ I I V A p Dp ~ i 1 Q°J° \ \ ` ~ q~A / ~ ~ \ \ ~ \\pa°° \ °~°p ~ \ \ \ b -P ` D ° \ \ ~ \ \ ~ ~ ~D ~ ` QA D D DA V A ( / ~ ~a° \ \ V A qqq / / ~ A V OA \ ° ~ t \ \ \ ~D p DD D \ p \p \ I I ~D D \ \ ~ a ° \ \ °q ~ \ \ \ \ \ \ D~D pD~~ \ \ I \ pD DDC V ~ \ ~i \ \ ,DD D~ DD \ \ ~ I D p p \ DDDD `DDLppDbp V ~ \ a°° \ \ \ \ \ 4 . a \ , 0 \ \ \naQL q a ° \ \ V A D pD D D n~'~ \ \ - ~ a ~ a 1 n •a~ gaa°`a q~ \ 1 ~ \ W~ \ I \ ~P 1 ~ v v ~ q qa ~v t v ~ ~ \ \ \ \ v ~ ~ \ \ \ \ \ \ \ ~ \ v ~ A ~ V ~ 1 V ~ - - ~ ~ ~ v 1 \ ~ \ \ 1 TYPICAL PER 50 LF ~ A V OF A UATIC SHELF A v v ~ v ~ V A \ \ ~ \ 1 ~ Q EL=398.O~rPOND1 v vv v ~ ~v ~ A 1 \ \ \ \ \ \ \ ~ \ 1 ~.1 E1.-388.0®POND2 \ \ ~ \ I ,1 1 \ \ 1 V A I 1 \ \ ~ ~ \ \ \ \ 1 I ~"o"o"o"o"o"o"o"o"o"o"o"o"o"o"o"o"o"o"c ~ \ ~ ~ \ \ ~ ~ \ ~ i I u 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O~-o- 40 FRAGRANT WATER LILY - 0 0~_~p.~_ 0 0 0 ~ \ ~ / ¢ LL ~OQ0~0 O~OaO O-0 0 0-0-0 0600 ~0 ~ ~ ~ ~ ~ ~W 0 0000000000000 \ ~ ~ ~ + + + + 40 PICKEREL WEED A ~ i~ \ VA ~ ~ ~ ~ ti 1 , ¢ ~ + + + + + + 0 0 0 0 + + + + + + + + + + + + + + S( \ X I ~ ~ ~ o + + + + + + + + + i i \ ~ ~ ~ \ ~ ~ ~ ~ ~ ~ , ~ 30 HARD STEM BULRUSH 1 1 j ~ F ~ ~ v \ ~ ~ v I ~ ~ \ \ ~ ~ ~ \ ~ \ ~ V A 1 / l~ I I ii NORMAL P(~L ELEVATION \ I \ \ I ~ l l l A I I ! I EL.-aoo.o~ POND i ~ / / / \ 9 I ~ / / EL.-390.Ot~POND2 9 I / \ i ~ ~ i v ~ 1 I I / / 1; I ~ / / ! ~ / I ~ ~ 1 i I I ~ ~ / ~ AQUATIC SHELF PLANTING DETAIL ~ ti \ 1 ~ / I ~ l I I I ~ NOT TO SCALE 0 1 I ` S I Igo I 1 ~ 0 1 0~ n ~ I 1 I I I 1 r ~ I I C I / ,.I I 1 ~ I I 1 / ~ I o I I I I / ~ I i I ~ \ I ~ I ~ I l ~ I 'I I ~ ~ I ~ I C I ~ ~ I i I ~ 1 1 I I C I I I I ~ ~ I I I ~ I 1 I I 1 I ~ I I I 1 V ~ 0 a a ,D. 0 1a' m II ~ a r a ~ ~ CONICAL 1/2" GALVANIZED STEEL TRASH RACK _ TRASH RACK ~ v CONICAL 1/2" GALVANIZED STEEL TRASH RACK o ~ MAXIMUM OPENING SIZE 12" HORIZONTAL) {MAXIMUM OPENING SIZE 12" HORIZONTAL} HORIZONTAL} ~ z ~ Z N ~ TOP OF OAM 396,0 TOP OF DAM 406.00 100 YR FLOOD ELEVATION v . 100 YR FLOOD ELEVATION o . 395.00 TOP RISER 404,50 TOP RISER 395.00 _ = 1 ~ 1 ~ ~ 3'X3' AOX RISE u ~ ~ ~ J 1) 2 CIRCULAR OPENING v 400.00 Q 3'X3' BOX RISER 1 1" CIRCULAR OPENING v 390.00 390.00 ~ - 400.00 N RMAL P L - 390.00 390.00 INV OUT = 385.00 INV OUT = 395.50 STEM STEM SUPF STEM SUPPORT SUPPORT VALUE 133 LF 12" RCP ~ 0.75% 4" NRS GATE VALVE 4" NR5 GATE VALUE 86 LF 12" RCP ~ 0.58% w/ PREFABRICATED ANTI-SEEP COLLAR w/ PREFA9RICATED ANTI-SEEP COLLAR , CIASS B STONE ' CLASS II STONE OUTLET DISSIPATOR OUTLET DISSIPATOR 3000 P51 CONCRETE 14'W x 12'L'x 22°D 6'x6'z1,5' 3000 PSl CONCRETE 27'W x 24'L'x 22"p 6.5'x6.5'x1.5' 3000 P51 CONCRE d50=13" d50=13" V10 = 11.5 FT/SEC ~~••~""~~~4~, V1D = II.D FT/5EC ~aRp 2 SECTION ~ ~ . POND 0~ 'k~ ~ SECTION POf~D 1 N.T.S. 0 N'~ N,T.S, QQ` 9( ~ ; SEAL 's t 23484 8 • r Sti R B ~I..~,°Q•• ALL CONSTRUCTION SHALL BE y EY 0~ RDA E WITH ~ IN ACCO NC CURRENT TOWN OF CARY cTnr,lne~nc e~in J I/-%IN nv~ nivv U 8 IZ~D SPECIFICATIONS. / N w d No. Revision Date B Designer Scale 1. INCLUDE AQUATIC SHELF PLANTINGS 11/12/04 BOH W&R a 2. REVISE PON02 INFLOW & ORIFICE SIZES 12/16/04 BDH Drawn By Date WITHERS RAVENEL Sheet No 25 y AL 9204 GREYHAWK SUBDIVISION STORMV )RMWATER POND DESIGN DETAILS ENGINEERS I PLANNERS I SURVEYORS Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919469-3340 fax: 919-467-6008 www.witliersravenel.coni BW 204028 WAKE COUNTY CARY NORTH CAROLINA INDEX OF SHEETS RAW I N G S FOR EXISTING CONDITIONS SHT 1 OVERALL SUBDIVISION PLAN SHT 2 DETAILED SITE PLAN -SOUTHERN SECTION SHT 3 DETAILED SITE PLAN -NORTHERN SECTION SHT 4 UTILITY PLAN -SOUTHERN SECTION SHT 5 UTILITY PLAN -NORTHERN SECTION SHT 6 T ~a 1010 ROAD) GRADING AND STORM DRAINAGE -SOUTHERN SECTION SHT 7 GRADING AND STORM DRAINAGE -NORTHERN SECTION SHT 8 EROSION CONTROL PLAN -SOUTHERN SECTION SHT 9 TT O~i'-S B-O~ ~ EROSION CONTROL PLAN -NORTHERN SECTION SHT 10 PLAN AND PROFILE - R007 STA. 10+00 -STA. 23+00 SHT 11 PLAN AND PROFILE - GREYHAWK PL. (NORTH) STA. 23+00 -STA. 34+22.83 SHT 12 _ ~ ~ ~ ~ PLAN AND PROFILE - BROADWING WAY STA. 10+00-STA. 14+64.94 SHT 13 ~ / WING SPAN CT. STA. 10+00-STA. 11 +71.12 1. PERMITTED USES SHALL BE LIMITED T0: J PLAID AND PROFILE -VAN GOGH LANE STA. 10+00 - STA. 23+23.45 SHT 14 a. SINGLE-FAMILY DETACHED RESIDENCES; ~ I~~~ JL b. PARKS & RECREATION, OPEN SPACE (PUBLIC, PRIVATE AND NON-PROFIT USES); AND \ B LGI M R. r- PLAN AND PROFILE -HAWKS RIDGE CT. STA. 10+00 -STA. 14+94.77 SHT 15 c. AMENITIES & ACCESSORY RESIDENTIAL USES. ~ J L T EXCEED 80 LOTS (1.48 DWELLING UNITS PER ACRE). ~ \ T 2. MAXIMUM NUMBER OF DWELLING UNITS SHAL NO PLAN AND PROFILE - GREYHAWK PL (SOUTf D STA. 70+00- STA. 13+57.55 SHT 16 AT AD OIN DUTCHMAN DOWNS WILL MAINTAIN A MINIMUM LOT SIZE OF 3. THE LOTS LOCATED ON THE PERIMETER TH 1 J- I ~ SOARING HAWK PL. STA. 10+00-STA. 13+40.37 18,000 SQUARE FEET. THE MINIMUM REAR YARD SETBACK FOR LOTS ADJACENT TO DUTCHMAN DOWNS WILL BE 30 FEET. / I SANITARY SEWER PROFILES -LINE "C" SHT 17 4. ASIDE YARD SETBACK OF 20 FEET WILL BE PROVIDED ON THE SOUTH SIDE ONLY BETWEEN THE LOTS IN THE PROPOSED ~ DEVELOPMENT AND WAKE COUNTY PIN 0761.50.4302; AND 0761-50-1238 (3000 VAN GOGH IANE AND 3001 VAN GOGH LANE). Q - ~ SANITARY SEWER PROFlLES -LINES "A", "D", "E", "F' & "G" SHT 18 5. A 20-FEET LANDSCAPE EASEMENT ADJACENT TO THE L01 S IN DUTCHMAN DOWNS WILL BE PROVIDED. THIS EASEMENT ~ ( WILL BE MAINTAINED BY THE HOMEOWNER'S ASSOCIATION ASSOCIATED WITH THIS DEVELOPMENT, Q .g L SANITARY SEWER PROFILES -LINE "J" SHT 19 6. EVEN THOUGH EXISTING TREES AND VEGETATION ARE LIMITED, THE SITE SHALL NOT BE COMPLETELY DENUDED OR - ~ _ GRADED. THE INITIAL GRADING AND CLEARING SHALL BE LIMITED TO THE ROADS (RIGHTS-0F-WAY AND EASEMENTSI, ` ~ ~ I ""~~~=a SCAN AND PROFILE - 1010 ROAD WIDENING SHT 20 IL I ENVELOPES. SELECTIVE CLEARING AND GRADING IN REAR LOT SETBACK = A FRONT YARDS, SIDE YARDS AND BU D NG AREA AND OPEN SPACE WILL OCCUR AS LOT$ ARE DEVELOPED AND ON A SELECTIVE BA515. ~ _ 5 W u y~V~ ~ ~ STRIPING PLAN - 1010 ROAD SHT 21 7. DEVELOPMENT WILL BE CONSISTENT WITH THE SKETCH PLAN SUBMITTTED AS EXHIBIT A. EXACT LOCATIONS OF ANY Q STREET STUBS WILL BE DETERMINED AT THE TIME OF SUBDIVISION APPROVAL. a~p~~~~1~J STORMWATER MANAGEMENT PLAN SHT 22 8. PENDING WRITTEN REQUEST BY THE TOWN OF CARY PARKS AND RECREATION DEPARTMENT AND REIMBURSEMENTi CREDITS FROM THE TOWN, A 20 FOOT (MINIMUM) GREENWAY TRAIL WILL BE DEDICATED AND BUILT BY THE DEVELG~'ER. THIS GREENWAY WILL GENERALLY BE LOCATED ALONG THE ENTIRE LENGTH OF THE STREAM BUFFER FINAL DETERMINATION OF THE EXACT LOCATION OF THE GREENWAY WILL BE MADE AT THE TIME OF SUBDMSION APPROVAL. ~ _ ~L,~ DETAfLED PLAiJiiNG PLAN -SOUTHERN SECTION SHT 23 9. RUNOFF PROTECTION FOR THE 5 AND 10-YEAR TIME OF CONCENTRATION STORMS WILL BE ATTENUATED IN ORDER TO PROVIDE FURTHER PROTECTION OF DOWNSTREAM PONDS. 'i ~ - ~ ~ DETAILED PLANTING PLAN -NORTHERN SECTION SHT 24 10. PRIOR TO THE DEVELOPMENT OF THIS PROPERTY, THE EXISTING HISTORIC STRUCTURE IA SINGLEfAMILY HOME) WILL BE RELOCATED OFF-SITE BY THE OWNER. STORMWATER POND DESIGN DETAILS SHT 25 11. A PRIVATE RECREATION AREA WILL BE PROVIDED BY THE DEVELOPER ON OPEN SPACE ADJACENTTO THE STREAM BIJFFER. ~ STORM DRAINAGE & EROSION CONTROL DETAILS SHT 26 s R - ~0 > >o UTILITY DETAILS SHT 27 ~ J ROADWAY DETAILS SHT 28 GREENWAY DETAILS SHT 29 GREENWAY TRAIL PROFILES SHT 30 / -~j- PUMP STATION SITE PLAN PS-1 \ J _ I PUMP STATION SECTION VIEW PS-2 - - ~0 \ I p PUMP STATION PLAN VIEW PS-3 _ ~ - \ PUMP STATION SITE PLAN LAYOUT PS-4 ~ CHEMICAL FEED SYSTEM BUILDING PS-5 ODOR CONTROL EQUIPMENT PS-6 ELECTRICAL DETAILS PS-7 ELECTRICAL DETAILS PS-8 ISTING PROPOSED DESCRIPTION EX INTERMEDIATE CONTOUR INTERVAL P INDEX CONTOUR INTERVAL _ ~ DEVELOPER/APPLICANT RIGHT OF WAY LIMITS - - ROADWAYCENTERLINE - - CURB & GUTTER WINDJAM DEVELOPMENT GROUP i SANITARY SEWER FACILITIES -E55 E5s- -PSS--~'~s-' ~ ~ ~ ~ 1130 SITUS COURT, SUITE 250 STORM SEWER FACILITIES ¦ RALEIGH, NC 27606 WATERLINE -Pw~--1/-PWL- FIRE HYDRANT ASSEMBLY R S I S U R V E ENGINEERS I PLANNE U R V E Y O R S TELEPHONE: OFFICE (919) 256-3320 FAX: (919) 534-1753 FENCING STRUCTURE -0 0- 111 MacKenan Drlve Cary, North Carolina 27511 tel: 919-469-3340 fax: 919-467-600 919-467-6008 www.withersravenel.com ATTN: CRAIG GLASS ~ WOODSLINE NIA e N/A WATERWAYS ~ , SILT FENCING N/A a a q7 ya Y Q a d y$ Y WILLIAMS, IWICHAEL S 8 MI ./ 4809 JOLLENS BAY CT. • APEX IIC 27539-5194 976&238 . �.4 �• R •-N. r te• / HOMESCAPE BLALDING COMPANY 4813 MILLEN$ BAY CT. APEX NC 27539-5194 0780495361 Date - T R-50 10/23/04 V 2. PER TOC 2ND REVIEW 12/6/04 N 204028,00 L___J / 0704 52 5696 0007p 24,140 SF GREEWAY TRAILS 5505 DEN HEIDER WAY I I ASON. LAWRENCE FRAN S k R-40 m WATKINS BUILDING INC / L 4817 MILLENS BAY CT. L APEX NC 27539-5194 0761.04 50 5773-000 0760497350 R-30 O9 NE7HEfllAN05 OR 217 NETHERLANDS OR NELSON, MARK A 6 JOY 4821 MILLENS BAY CT APEX NC 27539-5194 0760409227 R -SO �' I � , ` roEL. AWES :fr6 TI6J$1E(/' \T C K / / 3724 it T1Dr 4n f-30 / 1I f L % I A004 TEN RD 75V / �I APEX NL 27502 I r 0760.Ox 52367 No. Revision Date B 1. PER TOC 1ST REVIEW 10/23/04 8DH 2. PER TOC 2ND REVIEW 12/6/04 6DH 204028,00 STREETS / 0704 52 5696 0007p 24,140 SF GREEWAY TRAILS 5505 DEN HEIDER WAY PUMP STATION SITE 3240 SF POWELL, JA ES LEWIS ET AL 3724 TEN TEN RD APEX NC 27502-7181 0780.01 49 3721-000 R-30 r---1 � V _0 \ mow: UI 1+- - r.LJAr J 94 / 4TEN TEN 011, MC o7JnoZ of 1 -000 I Designer W&R Scale 1"=200' Drawn By Date AL 4-7-04 Checked By job No. BW 204028,00 1 DEN HEIDER WAY (EXIST. 50' R/W, 20' EDGE- / 23 TOTAL # FIRE HYDRANTS 12 SORGE, JOHN P 6 LAURIE K 6113 BELGIUM DR Q• 13.63 AC, (25.4%) ATCHELOR. HEWN D k l ETTE M STREETS / 0704 52 5696 0007p 24,140 SF GREEWAY TRAILS 5505 DEN HEIDER WAY PUMP STATION SITE 3240 SF ASON. LAWRENCE FRAN S k R-40 m 593,820 SF / Y NO. JASON E f SHAN ON fl ANY JO NASON RALEIGH NL 27606-95fi0 CONZALEZ. RICAR'0 A 8 PATRICIA F 0761.04 50 5773-000 8 O9 NE7HEfllAN05 OR 217 NETHERLANDS OR ATTN: CRAIG GLASS m0 PH: 919-256-3320 -40 076103 47 4111-000 5433 DEN HEIDER WA CH N. DON CHI k CHINO NUI DAVISON,'AAD SCOTT k SU NE C TAYLOR, ROBERT W .R k NARv R TRUST 61.04 51 5084-000 761.04 51 5354-000 R-40 584 RALEIGH NC 2 7808-8 584 5429 OEN HEIDER WAY S42, DEN HEIDER w4v 5408 GEN HIDER war SCRGE. JOHN P k LAURIE 0761.03 41 4306-000 RALEIGH NC 27806-9584 RALEIGH NC 27606-9564 RALEIGH NC 27606-9584 R-40 5505 DEN HEIDER war R-40 0761.03 41 4559-000 0761,03 041 4789-000 0761.03 42 5201-000 NETHERLANDS 1 FULTON, RICHARD E k JANE E RCER, JEFF k uSn C RALEKii NC 27806-9580 R-40 R-40 R-40 5513 DEN HEIDER WAY 5509 DEN HEIDER WAY 0761.03 40 4646-000 - GMON GREGORY L k BETSY A THOMAS RALEIGH NC 27606-9560 RALEIGH NC 27606-9560 -40 PHIFER, NARK P k TERE N SIGMON 5405 DEN HEIDER WAY 0781.03 40 4373-000 0761.03 40 4668-000 5421 DEN HEIDER WAY RALEIGH NC 27606-9564 1 R-40 R-40 IIINiI' y RALEIGH NC 27606-95 0761.03 41 4987-000 R -4o 0761.03 42 5424-000 TOT LOT R-40 ----- .-.-- --- --- __ --RIV TE LANDS 4 ,t •. �� r:- T+.... ►� a- - --- --- �I C F F F F F F 1 F F F L-- 20 PRIVATE LANDSCAP SMT.-- 1 1 1 f J l -- -- ------ -7 T r---,F----�r---- r--- : � � 30 GREENWAY & / ♦ �..� W +, u SAJ 1ARY NEWER ESM7 4� I•� N O Q- - A �• 30' G Fy{ENWAY I I I I I I I L__=� _- �]1-� L_--J---__-J � L J-SANaT� K_SEW€f --J L J L L - J rLi- 5212 •� - / I 52 2 LEIDEN UN l F_ - _­) F_ 7 -, I _. - F- - _ � F _ _ - - _ - ,.. .. _ - - -1 r _ - -1 F _ - _1 7- _ - -1 r - _ - _ - `V ` • RALEIGH NC 27505-9353 C� ,I I -�. �..• I N I I I I N I I N V �:.I, i �\ O iJt CT1 ! CP CP ', :.`` U1 N LrI N \ 8710 3 42 66x9-000 uv U L �I En oD 1 co , rn ` L- - - - /� L4 N) 010 VAkJGHAN, Y .. . ''.. /I : 5212 LDDEN NN R k EIIEEN 0 O �'� W //// \\ \'`¢ 1 CII J.. y -------- --__-- ---- -- L ----J G C7) \ ^ / ��a� 1 _ / / / } _ ✓ //� 1- ! (•I .y:... ..J. : OM .0.5 429696-000 RALE NC SS3 ti PRN--- --- - --- r - - - -- cn n N STQF:MkVA�yTE c R-40 00 MAPLES NANCY J t OTHY R REILEY 01 �VT' \ \\ \ \. .. N •� \ ' � �' .0e 3012 VAN GOON LANE\, • O t. _ __J l C k LEIGH ANNE 1� � 1 Ex NC 27639--6774 30005VAN�GOGH LANE ,Ar- _ -l�\ . . �� • �_ a T j - I:.: 0 91982 SMITH, LOUIS W k ANNA I- - __ - - -I r \ > \ \ . - j APEX NC 27539-5774 I _ ! pOD(pLs, 115 D k AK N JIII R-4 3006 VAN COON LANE - f A r I. am Q LOM OR N \ ��- r APEX NC 27539-5774 0761501x38 -P I F / / \ r` / _ �.) 0761501047 R -40W I V \ /l I //J / \ • .T `'. - - / / ^ % T RALE" Nc 77006-9731-40W ( % % : I : om.o4 52 2808-000 __---_--J _ W L, L----- \��:'�T. �\ N / J. ��. :`. ,r •O7 I' R-40 o STORM:W�G� �'1`I•�•••�;. �\� I � , >�ti�•: f �. may• ( 4 - --- -- --1 POND ,�• A � � I \ � \ •` ^ �' � MATHESON, NLLIAM K k SHARD L 1 + O \ •�•L `r A 8201 BELGIUM OR \ F. �. it Q1 N I. . Y G k SAAOR ERIC y -0731 \ I 7606 R GH NC 2 P � r�: ALE I x1111 GOGN UtE r I \ - - - `. �•\ .:'r;' :: I : m NC 2iM-5774 _ _ - - - - - - \ 4 1 R7604 410 52 3887-000 x \yA6151214302 L-- _--_ --_-- ---_ - -- - - - - - , `�i 4or PRIVAT-C DS�ATE-E T --- `--- _ - 7 -- - SING. TARY, ROBERT G A USA W R VA om 8117 NETHERLANDS OR „ r LOW 2218 NE, JOHERLANDS S k SONJA I RALEIGH NC 27606 -%OS LLWM, MICHAEL E 6 A HE F PURDY, MORRIS FIXiREST k DONNA B NLU 41$ KA+' MARIE 0761.04 50 5535-ODO 6205 NETHERLANDS DR 8213 NETHERLANDS DR 8221 NETHERLANDS OR 5416 AMSTERDAM PL _40 RALEIGH NC 27808-98 RALEIGH NC 27606-96 RALEIGH NC 27606-9659 NASPER, PETER L k MARY E RALEIGH NC 27606-9706 51 5531-000 0761 . 0761.04 50 5899-0000761.04 51 5188-000 6225 NE THERlAN05 DR 0]61.04 51 6141-000 N R-40 R-40 R-�04 RALEIGH NC 27608-9859 R -4 0r MOUNT J DAVID O k GAIL L PEACOCK. JOSEPH T JR k CATHERINE 5 8109 NETHERLANDS DR RALEIGH NC 27608-9505 0761.04 50 8560-000 R-40 GREYHAWK SUBDIVISION WAKE COUNTY CARY NORTH CAROLINA OVERALL SUBDIVISION PLAN SITE DATA TOWN OF CARY PROJECT # 04 -SB -022 TOTAL TRACT SIZE ZONING PIN'S TOTAL # PROPOSED LOTS PROPOSED DENSITY MAX. # LOTS ALLOWED PROPOSED MIN, LOT SIZE PROPOSED AVG, LOT SIZE OPEN SPACE PROVIDED LF OF STREETS (PUBLIC) BUILDING SETBACKS; FROM THOROUGHFARE FRONT SIDE CORNER SIDE REAR ADJACENT TO DUTCHMAN'S DOWNS TOTAL LF GRAVITY SEWER 8" ON-SITE 14" ON-SITE TOTAL LF WATER MAIN 6" DIP 8" DIP 12" DIP TOTAL TOTAL LF 8' GREENWAY TRAIL TOTAL LF 10' GREENWAY TRAIL TOTAL LF ROAD WIDENING 53,64 AC, R-12 CU 0761.03-40-7899 0761.04-51-2650 78 1.45 D.U,/AC. 80 12,000 SF 16,091 SF 18,21 AC. 5174 FL 50' 20' 10' 20' 25' 30' 6735 LF 5547 LF 1188 LF 1490 LF 2570 LF 1 160 LF 5220 LF 780 LF 1250 LF 1090 LF (545 LF ON BOTH SIDES) TOTAL # WATER VALVES 23 TOTAL # FIRE HYDRANTS 12 0761.04 51 5772 -DDD 6113 BELGIUM DR Q• 13.63 AC, (25.4%) ATCHELOR. HEWN D k l ETTE M STREETS R-40 0704 52 5696 0007p 24,140 SF GREEWAY TRAILS 201 NEINCRLANDS 004 PUMP STATION SITE 3240 SF ASON. LAWRENCE FRAN S k R-40 m 593,820 SF ALEIGH NC 27606-955 Y NO. JASON E f SHAN ON fl ANY JO NASON OWNER/ DEVELOPER: WINDJAM DEVELOPMENT GROUP 0761.04 50 5773-000 8 O9 NE7HEfllAN05 OR 217 NETHERLANDS OR ATTN: CRAIG GLASS m0 PH: 919-256-3320 -40 R EIGH NC 27606-9659 ALEIGH NC 27606-985 KING, EDWIN M k DOROTHY L 61.04 51 5084-000 761.04 51 5354-000 O 8113 NETHERLANDS OR 40 -40 RALEIGH NC 27806-9805 0781.04 50 6479-000 R-40 NETHERLANDS DRIVE (EXIST. 60' R/W, 20' EDGE -EDGE) PEACOCK. JOSEPH T JR k CATHERINE 5 8109 NETHERLANDS DR RALEIGH NC 27608-9505 0761.04 50 8560-000 R-40 GREYHAWK SUBDIVISION WAKE COUNTY CARY NORTH CAROLINA OVERALL SUBDIVISION PLAN SITE DATA TOWN OF CARY PROJECT # 04 -SB -022 TOTAL TRACT SIZE ZONING PIN'S TOTAL # PROPOSED LOTS PROPOSED DENSITY MAX. # LOTS ALLOWED PROPOSED MIN, LOT SIZE PROPOSED AVG, LOT SIZE OPEN SPACE PROVIDED LF OF STREETS (PUBLIC) BUILDING SETBACKS; FROM THOROUGHFARE FRONT SIDE CORNER SIDE REAR ADJACENT TO DUTCHMAN'S DOWNS TOTAL LF GRAVITY SEWER 8" ON-SITE 14" ON-SITE TOTAL LF WATER MAIN 6" DIP 8" DIP 12" DIP TOTAL TOTAL LF 8' GREENWAY TRAIL TOTAL LF 10' GREENWAY TRAIL TOTAL LF ROAD WIDENING 53,64 AC, R-12 CU 0761.03-40-7899 0761.04-51-2650 78 1.45 D.U,/AC. 80 12,000 SF 16,091 SF 18,21 AC. 5174 FL 50' 20' 10' 20' 25' 30' 6735 LF 5547 LF 1188 LF 1490 LF 2570 LF 1 160 LF 5220 LF 780 LF 1250 LF 1090 LF (545 LF ON BOTH SIDES) TOTAL # WATER VALVES 23 TOTAL # FIRE HYDRANTS 12 TOTAL # SEWER MANHOLES 41 IMPERVIOUS SURFACE 13.63 AC, (25.4%) IMPERVIOUS SURFACE TABULATION: STREETS 157,500 SF SIDEWALKS 24,140 SF GREEWAY TRAILS 18,940 SF PUMP STATION SITE 3240 SF LOTS.390,000 SF (5000 SF/LOT X 78 LOTS TOTA_ IMPERVIOUS SURFACE 593,820 SF TOTAL SITE AREA 2,336,395 SF TOTA_ PERCENT IMPERVIOUS 25.4 % OWNER/ DEVELOPER: WINDJAM DEVELOPMENT GROUP 1130 SITUS COURT, SUITE 250 RALEIGH, NC 27606 ATTN: CRAIG GLASS PH: 919-256-3320 FAX: 919-534-1753 N0TFS: �� �STRU' CTION SHALA BE IN ACCORDANCE WITH CURRENT TOWN OF NDARD SPEC FICIATONS AND DETAh S. SHOWN IS FROM? PRELIMINARY LAYOUT BY ELAM, TODD J AMBR; SI AND WITHERS & RAVENEL, INC. 3. EXISTIN TOPOGRAPHY SHOWN IS FROM PRELIMINARY SURVEY BY WITHERS & RAVENEL, INC. 4. WETLAN2S SHOWN ARE FROM DELINEATION BY ROBERT J. GOLDSTEIN & ASSOCIA- ES, INC. AND MAPPED BY WITHERS & RAVENEL, INC. 5. THE DE, :-LOPER WILL BE RESPONSIBLE FOR ALL INSTALLATION COSTS 4SSOCI \ ,_D WITH STREET LIGHTING ALONG PROPOSED STREETS, ADJACENT S RrET qND THOROUGHFARES AS REQUIRED PER TOWN OF CARY rATEMENT NO. 13. THE DEVELOPER SHALL CONTACT CAROLINA �C''_R ',ND LIGHT COMPANY AFTER PLAN APPROVAL AND PRIOR TO ti T= , TION IN ORDER TO DEVELOP A STREET LIGHTING PLAN FOR THE S_ :;DIVISION PLANS. a. HALL BE S �. �T TRIANGLES OUTSIDE OF THE STREET RIGHT-OF-WAY 5 RECGR'__'t D AS SIGHT DISTANCE EASEMENTS ON THE SUBDIVISION PLAT AND ARE SUBJEC TO USE RESTRICTIONS IN THOSE AREAS, 7. SIGNAGE IS A SEPARATE APPROVAL PROCESS AND HAS NOT BEEN REVIEWED OR APPROVED AS A PART OF THIS DEVELOPMENT PLAN. 8. ALL ABOVE GROUND UTILITY EQUIPMENT AND FACILITIES ASSOCIATED WITH ON-SITE ELECTRIC, CABLE, TELEPHONE, GAS OR SIMILAR SHALL BE LOCATED IN THE SIDE OF REAR YARD AREA OF THE SITE AND SCREENED, TO THE EXTENT POSSIBLE, WITH EVERGREEN PLANTINGS. PLANTINGS SHALL ALLOW FOR .A MINIMUM OF 5' CLEARANCE AROUND THE STRUCTURE TO ALLOW FOR ACCESS. ADDITIONALLY, ANY SIDE OF THE STRUCTURE HAVING A DOOR OR LOCK, THE PLANTINGS SHALL ALLOW FOR A 10' CLEARANCE. THE AMOUNT OF CLEARANCE SHALL ACCOUNT FOR THE SIZE OF THE PLANT MATERIAL AT MATURITY. 9. NO TREE SHALL BE LOCATED WITHIN THE RIGHT-OF-WAY OR WITHIN 5' OF A SIDEWALK. 10, TWO BENCHES WITH CONCRETE PADS AND ONE TRASH RECEPTACLE WILL BE REQUIRED TO BE INSTALLED BY THE DEVELOPER ALONG THE GREENWAY TRAIL. THE LOCATIONS WILL BE SITED BY TOWN OF CARY PARKS & RECREATION DEPARTMENT. PLEASE CONTACT JOE GODFREY AT 462-3863 TO REVIEW TRAIL ALIGNMENT PRIOR TO PAVING AND SITING THE BENCH LOCATIONS, 11. A REQUEST FOR A DEVELOPER AGREEMENT BETWEEN THE DEVELOPER AND THE TOWN OF CARY MUST BE SUBMITTED FOR THE TEN -TEN ROAD WIDENING PORTION OF THIS PROJECT. THIS REQUEST MUST BE SUBMITTED 10 THE TOWN OF CAR`' PRIOR TO BIDDING OF THE ROAD WIDENING PROJECT OR THE DEVELOPER FORFEITS THEIR REQUEST FOR A DEVELOPER AGREEMENI GRID NORTH (NAD'83) PB 160, PG 63 GRAPHIC SCALE 200 0 100 200 400 1 inch = 200 ft. 91- BARD( �''•. SIp� s SEAL 23484 s 0 •••••;AGI Nt�;;,.•P :01%.N EY.O x:00 I// (rteCT �"� ' 1z1/610 ' ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CURRENT TOWN OF CARY STANDARDS AND SPECIFICATIONS. WITHERS & RAVENEL ENGINEERS I PLANNERS I SURVEYORS 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 fax: 919467-6008 www.withersravenel.com Sheet No. 2 f '+m ~X ~ o I/ SORGE, JOHN P & LAUi~iE K 1 1 5505 DEN HEIDER WAl ~ ~ RALEIGH NC 27606-[~'~ti0 0761.03 41 4111-000 / , > / p ~ _ ~ I ~ I R-40 GONZALEZ, RICARDO A & PATRICIA F l ~ ~ i ~ ~ , 5433 DEN HEIDER WAY RALEIGH NC 27606-9584 ~ A ; 1 ~ ~ POWELL, JAMES LEWIS ET L / 0761.03 41 4308-D00 / ~ 3724 TEN TEN RD APEX NC ,Q GRID NORTH (NAD'83) RTH (NAD'83) SORGE, JOHN P & LAURIE K R-40 i0, PG 63 5505 DEN HEIDER WAY ~ ~ 27502-7181 / PB 160, PG 63 HOMESCAPE B ILDING (`r~MPANY 0760.01 49 3721 000 + v RALEIGH NC 27606-9560 I 4813 MILLENS BAY ~T.~ R-30 ~ $ ~ EULTON, RICHARD E & JANE 0761.03 40 4846-000 I r ~ i APEX NC 1275 95194 / 0760495361 ~ E 5513 DEN HEIDER WAY RIDER, JEFF & LISA C R-40 ~ / ~ ~ RALEIGH NC 27606-9560 R-30 , ~ ~ / ~ ` 0761.03 40 4373-000 5509 DEN HEIDER WAY ~ RALEIGH NC 27606-9560 ~ ' / / i ~ V / R-40 / / ~ ~ V 0761.03 40 4688-000 ~ / ~ / - ~J~ / ~ R-40 ) ~ - - ~ - - ~ - ~ ~ ,1 / f I 1 1 ~ - - ~ ~ 1 ~ NO6'35' 14°E I 650,52' / / / - _ 1660,37' - _ ~ ~ _ i - - - N~0'21'13"E - - - - - r ~ ~ o I e / ~ / / ~ ~ ~ c,°~ ~ ~ ~ ~ j i ~ I ~ / i / - ~ ~ / / ~ 39 SANITARX~ SEWER & i ~ ~ / / 1 ~ ~ i 1 ~ I DRAINAGE E/SMT. ~ / / ~ / _ ~ - ~ _ ~ ~ i I ~ ~ w ~ ~ ~ N / ~ W • N J l 1 ~ 'n i 1 ~ ~ ~ _ ~-450 ~ /2 / / - ~ / / / / 1 l / ~ ~ ~ i ~ I p ~ I 1 ~ ~ o ~ ~ / 1 / / ~ A ~ - _ - ~ N ~ I i ' ~ ~Z ~ - Z ~ N ~ I i ~ 1 ~ ~ ~ ~ ~ I ~ I / ~ ~ ~ VARIABC'E WTDT / 69 ~ ~ - ~ - ~ ~ ~ / ~ DRAINAG E,~fv~l , ~ ti ~ ~ / ~ ~ y I , ~ HA~CI-l~D REb~ REPIj~£S~NT ~ 1 _ P N N ''I ~ N z \ / o~~ ~ ~ 11,d0-YR HEA~WAIfER EL V, ~ ~ o 'l ~ + N ' o ~ I ~ / ~ 1 ~ --I ~ 8, 1 ~ ~ 1 ~ 10 / OF4~3,1'7~~ I I za Iql z i i i ~ ' A i \ i ~ ~ / / ~ \I I ~ ~ I ~ ' ~ L~ N ~ / ~ ~ ~ ~ . / ~ ~ \ ~ ~ ~ ' ~ / i i ~ 'I . / vk Q~ ~ i3+w ~ 1. y~ ~z+ao 7 / ~ - - ~ ~ ~ ~ A ~ ~ - ~tisti- / ~ ~ ~ ~ ~ ~ \ l ~ ! ~ ~ ~ ~ I I ~ I / ~,t ~ T l i % ' ~ ~ ~ l ~ I l a~ , ~ i / ~ ~ ~ ~ I I I I i ~ ~ ~ A / i ~ ~I I i ~ / / a ~ - - - 9 V ~ ~ I I ~I ~ / ~ ~ ~ / ~ 'I I - N N ~ ~ ~ ~ ~ Cd r WATKINS BUILDI G INC o / ~ ~ 4817 MILLENS AY CT, ~ ~ i . ~ I 1 ~ i i~ I l I APEX NC 2753 194 ~ i~ (DD / y °o ~ / ~ 1 0760497350 ~ ~ ~ V / 1 / ors' ~ ~ ,a -~o ~ le+ o / 16+ O ~ ~ ~ 17+00 1©+ 0 i 19+Q0 ~ ~ 20 i0 ~ 21nOG ~ 22 ~ ( 3+ 0 ~ 24t ~ "SHOO I ~ 1. 7 I ~ ~ ~ N ~ ~ ~ 0o N i 78 - ~ ~ / ~ - - ~ ~ ~ - ~ ~ ~ ~ ~ ~ ~ q, a / ~ / ~y I 4 J, i l • ~ . / / is ~ l~ J / % ~ / i i i ~ ~ I ~ / ~ ~ ~ ~ ~ , n / \ ~ / I y, q ~ to I ~ ~ ~ ~ ~ / W ~ ~ ~ ~ , CO ~ ~ ~ ~ I ~ N ~ ~ ~ ~ ~ ~ ~ CU / pM i / V V ° ~ , ~ ~ ~ ~ ~ ~ \ 20 ~RAINAG~ I ~ ' i i ~ ~ ! 4 ~ / ~ i ~ ~ EASENI,ENT 1 ~ ~ ~ ~ I. ~ ~ i / ~ / i / d 1 ~ ~ ~ i ~ / ~ I ~ \ ~ ~ I ~ 1 m ~ 1 / 5Q / ~ I i i i I ® ~ I I ~ d o I / I bra I V ~ \ / l ~ ~ ~ ~ i _ \ ; \ ~ ~ o' ~ I 1 / 56 ~ ~9 x ~ ~ V A ~ ~ -0 ~ , ~ / ~ ~ l I ~ d 1 I ~ / i X57 ~ I ~ 1 ~ ~ 0 / I- _ - - / m d / ~ ~ 1 / ~ 58 i ~ 1 v ~ ~'1 'G ~ i ~ ~ ~ v ~ OF ~ ~ 7 ~ ~ 52 ~ ~ h / I _ / l u ~ 1 u / N 1 J 1) I ~ ~ / ~ / ~ ~ i~ l l ~ ~ \ ~ ~ ~~0 1 / r / ~ ~ A ~ 6~ ~ 'L ~ o A ~ ~ 460 1 NELSON, MARK J Y ~ , , ~ ~ ~ \ ~ ~ / ~ ~ ~ l ~ ~ ~ 1 ,O \ ~ 2 F` 1 ~ l ~ ~ i o~" ~ ~ V \ O. ~ ~ ~ ~ / ~ ~ ~ , / ~ 1 V ~ ~ ' ~ 4821 MILLENS B Y C~ ) ~ ~ - - ~ ~ ~ f ~ l i i / ~ c' A X NC 27539 5 ;9 ~ ~ 4s2, ~ I ~ / ~ ~ PE 1 ~ ~ 076049922 ~ ~ ~ ~ 53 / i~ I ~ / ~ ~ 1 ~ ~ A0 ~ 01 \ ~ ~ ~ ~ , , ~ ~ ~ ~ ti ' l ~ ~ R-30 Q ~ ~ ~ ~ ~ l / r ~ ~ ~ ~ 1 ~ ~ ~ / ~ ~ _ ~ y ~ 1 75 s ~ _ - I ~ ~QSO i I l ~ ~ I ~ / ~ ~ ( ~ ~ 1 ~ ~ ~ - 55 5~ ~ ~ ~ ~ ~ 1 I ~ I / ( i 1 / i~ 60 I ~ ~ v' i ~ . I D / ~ ~ - ~ I I ~ / ~ / / N , ' ~ ~ ~ ~ ~ ~ ~ / T o 6/ ~ -y I I I 76 ~ I ~ I ~ I ~ ~ ~ / I ~ I~~ I .I v I 1 ~ ~ , v I I I I / I .n I I I~ / 7 , - I ~ T ~ ~ I l j / / - ~ ~ / J ~ ~ ~ ' ~ 30 ANITAf2Y SEWER & i _ - I I I ~ I I ~ ~ ~ ~ I ~ I~ i ~ DR AGE~ESMT./ / ~ 6-5 ~ I I I \ ~ i ~ ~ _ i I I X17 co ~ ~ ! ~ ~ ~ , ~ ~ / I ~ I 1 ~ i ~ i I I I I td ~ ~ ~5 ~ n ~ \ _ ~ ~ . ~ c ~ ~ - - - - , ~ ~ ~ I ~ 1 ~ \ i ~ y I ~c~- ti++ ~.,u i I ~ ~ ~ ~.A ~Z~ r~ ~ ,51' ~ I 1 ~ 1 ~ ~ a 61 - ~ u I ~ ~ ~ ~ ~ A -7 i _ - - - 9i o ( ~ I Sao / ~ ~ ~ v?m~ I v ~ ~~8 ~ ~ - - - o I ~ ~ ~ j , ~ ~ ~ ~ \ I _ ate- A 1 ~ 1 rn ~ ~ ~ _ ; ~ I ~ -D ' p ~ O / o~ m ~ ( ~ a ~ ~ _ - - 1 ~ >o~ POWELL, WILLIAM M JR / I ~ i ~ 4004 TEN TEN RD / x~ w I ' 1 I ~ ~ o ~ _ _ _ ~ 1 V 7 ~ 1~- ; ~ ~ ' o APEX NC 27502 / ~ or`' MAPLES, NANCY J &TIMOTHY R I ~ V I ~ ~ ~ i \ ~ ~ \ ~ A - - ~ I 076002 59 1570 000 / REMLEY 3012 VAN GOGH LANE SMITH, LOUIS W & ANNA M JONES, RONALD G & LEIGH ANNE ~ ~ R-40W ~ / APEX NC 27539-5774 3008 VAN GOGH LANE ~ ~ ~ ~ a~a ~ ' ~ . \ 3000 VAN GOGH LANE z ~ \ 7 1 8 _ o0 _ / 0 6059 9 2 APEX NC 27539-5774 APEX NC 27539 5774 ~ ~ ~ / ~ -40W 0761501047 0761501238 w _ ~ ~ ~ \ \ - - 1 \ 1 ~ ~ ~ v v 1 ~ ~ , R-40W R 40W / o ~ ~ ~ ~ HATCHED,.ARE~( IS STOf~ AT~R i I ~ I ,~a ,A ~ ~ ~ m ~ \ { ~ - _ _ , -A£Cf"S~ & MAINTNCE SMT, I ~ ~ ~ ~ ~ m o ~9 r 1 , ! P WE JAMES LEWIS TRUSTE ETAL ~~9 ~ / T RM RAINAGE CHART ~ 1 ~ ~ , ~ 1 ~ ~ ~ 20' DRAINAGE a ! ~ ~ ~ V o A ~ ~ _ _-rr'% o Aso 0 24 TEN TEN RD ~ ~ ~ ~ / $ Pipe Flowing Pipe Pipe I ~ ~ ~ ~ ~1 1 \ ~ SE~IENT ~ I ~ W m I o ~v ~ ~ ~ APEX NC 27502-7181 j / Upstream Orainoge Discharge Full Diameter Length Plpe ~ ~ ~ v~ ~ ~ 1 ~ ~ v I ~ ~ ~ ~ _ - 0760.02 58 4553-000 / / ~ /i Rim Inlet area 01o Copaciry D L upper Inv, Lower Inv, Sloe _ _ _ _ _ R-30 From To (top of curb) D (ac) (cfs) (cfs) (in) (1t) Ekvotion Elevation - - _ J ~ ~ \ \ ~ ~ b~ V ~ ~ = ` 1 I I Z V ~ / I / ~ - - ' CB-1 C8-2 CB-1 452.46 0.62 029 1,30 11.37 15" 42 447.80 44650 3.10 ~ - _ I ~ ~ \I ~ \ ?e , , \ \ \ i I ,1 I I I I I I CB-2 CB-3 CB-2 451.02 0.62 0.80 3.58 5.56 15" 27 446.30 446.10 0.74 , % 1 \ ~ ~ I~ IE ~ 1 I h_ CB-3 CB-3A CB-3 451.02 0.75 1.01 4,71 13,16 15° 135 445.90 440,30 4.15 / sa+oo CB-3A FES-38 CB-3A 444.05 0.70 1.27 6,62 11,09 15" 86 440.20 439,30 1.05 ~ ~ /22+00 ~ ~,,p~ ~ i. \ " y~ I i L~ I I I I I ~ 1 0~" I I I n I I I I ~?OrOO ~ .t tr' 00 1 +00.. 1 ~ ~ ~ ~ a ~ ~ i i~~oo ~ as+ p rn I I I I J w w ~ v ~ I I 1 ~ I - CB-4 CB-5 CB-4 460.10_ 0.75 0.12 065 4.92 15° 60 455.70 455.30 OS8 ~ _ ~ ~ ~ , I a N pw ~ ~ ~ 1 ati ti V w ~ ~ I I I I~ I I I\ 1 - - ~ - 459.75 0.85 0.26 1.51 7.59 15" 58 455.20 454.40 1.38 / - - - ~c-~ GB 5 CB 6 CB 5 ~ ~I I I I I I V, 1 I `I CB-6 CB-7 CB-6 458.40 0.90 0.34 2.03 1052 15" 151 454.30 450,30 265 ~ ~ ~ / / I ~ I I 1 I I ~ / I 1 m 1 \ , I I l ~I I~ I - ~ I \ I I I l l w I h -I CB-7 FES-8 GB-7 454.35 0.90 0.52 3.20 5.33 15° 44 450.20 449.90 0.68 / _ ~ ~ ~ N 1 ~ ~ A \ I I I . I I f~, I I I I ~ CB-9 CB-10 GB-9 453.43 0.75 0.18 0.97 14.44 15" 132 449.00 442.40 5.00 _ ~ / ~ ~ \ 1 ~ ~ I ~ 1 \ I \ ~ I I i I I I I I / 1 1 1 V 1 ~ ~ 1 I .I 1 I I~ t 1 1 1 / ~ ~ I 1~ ~ \I \ i I~ I'. I~ I I `~I I I\ I OUTLET PROTECTION SUMMARY CB-10 CB-11 GB-10 44683 0.80 1.96 6,89 8.34 15" 45 439.50 438.75 1.67 - ~ l I ~ j t I 1 1 ~ ~ / l I ~ 1 ~ I I~ ~ I ~I I , I I ~ ~ CB-11 CB-12 CB-11 442.98 0.60 2.07 7.37 12.84 15" 129 438.60 433.50 3.95 W FES-3 FES-8 FES-21 CB-12 CB-13 CB-12 43796 0.50 2.67 9.53 12,64 18" 76 433.10 432,00 1.45 v i / ~ I I I ~ ~ I i 1 1 I~ V I I I i I I ~ I ~ ~ ~ 1 I ~ ~ I ~ I~ l~ I I\ I I~ I I I~~ I ~ CB-13 C8-13A CB-13 436.`/2 0.43 3.80 13.04 16.61 18° 8 431,90 431.70 250 ~ B'LX8'WX22°D 5'LX7'WX9°p 30'LX34'WX22'b ~ ~ / I I I I I - ~ I 11 1~ I I l I~ i' i 4 1 ~ I I I I ~ ~ ~I~ 1 ~ / 5) ~ I I / I I ~ I I I I~ I - RIP-RAP W CLASS 2 RIP-RAP W CB-13A C8-14 CB-13A 436.72 0.43 5.38 18.35 21.82 24;' 27 431.20 430.95 0.93 _ CIASS B RIP RAP W/ CLASS A / / t 7 02 LINNEY, ERIC G & SANDRA J ~ ~ ~ ~ I l I I~ I I ~I 46 / ~ l 43 I l 42 ~ l ~ i I`--~ i ~ I ~ ) ~ 1 }l FABRIC LINER FABRIC LINER FABRIC LINER CB-14 YI-15 CB-14 436.72 0.65 5.63 19.52 59,94 24' 129 430,75 42 70 - = d50=23" YI-15 CB-16 YI-15 425.50 0.50 5.95 20.68 35.55 24" 97 42150 419,30 2,47 3001 VAN GOGH-LANE d50-6" d50 3' - APEX NC 27539 5774 I f I, / \ / ~ ~ ~ ~ I ~ I 1 ~ ~ - ~ I ~ 1 I V10=9.08 FP5 V10=4.54 FPS V1D=19.66 FPS CB-16 CB-I7 CB-16 424.30 0.59 6.58 23,36 27.05 24" 49 419.10 41840 1.43 ` / ~ CB-17 YI-i8A C8-17 425.60 0.67 6.92 25,10 45.19 24" 138 41820 412.70 3,99 0761504302 YI-18A CB-18 YI-18A 417.00 0.49 8.92 32.17 36.45 30" 101 412,20 411.40 _0.79 R-40W ~ ~ ~ ~ ~ fl~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ i ~TORMWATER MGMT. - I FES-37 FES-40 FES-44 ~ CB-18 CB-19 CB-18 418.29 0.70 9.00 32.58 38.26 30" 126 410.90 409.80 0.87 \ ~ l ~ ~ ~ / ~ / ' i ti ; POND~1 - 5'LXTWX9"D 8'LX10'WX22"D 16'LX18'WX22'b Cg-19 CB-20 CB-19 415.33 0.51 12.06 45.50 57,37 36" 27 409.10 408.90 OJ4_ RIP-RAP W CLASS BRIP-RAP W CLASS 8 RIP-RAP W/ \ CLASS A / / CB-20 FES-21 CB-20 41533 0.70 12.53 47.88 15867 36" 83 40870 404.00 5.66 ~ ~ I / ~ ~ ~ ° - / - I 1 l i ~ - , ~ , ~ / I ~ ~ EE DETAIL ON Sf~T: 2~.- - I ~l I I _ ~ 1 FABRIC LINER FABRIC LINER FABRIC LINER 1 V I \ \ ~ ~ ~ I ~h, I I ~I~I-r~l I I _F- I ~ I ~ ~ V L ~ I, x.1_1 I i I, I I ~ ~ , d50=3" d50=6" d50=13" YI-22 CB-23 YI-22 443.50 0.45 1.28 4.16 4.83 15" 161 441.30 440.10 0.56 ~ V10=3.98 FPS V10=12.07 FPS V10=12.63 FPS CB-23 CB-10 CB-23 445.54 0.75 1.70 6.43 6.71 15" 37 440.00 439.60 1.08 ~ I ~ - ~ ~ ~ CB-24 CB-13A C8-24 437.63 0.55 0.46 1.83 8.35 15" 72 433.20 432.00 1.67 CB-25 GB-26 CB-25 431.78 0.75 0,19 1.03 5.56 15" 27 42735 427.15 0.74 1 ~ - - ~ ~ - ~ ~ , , FES-34 FES-31 (INLET PROTECTION) ce-26 ce-n C8-26 431.78 0.65 0.27 1.40 11.88 15" 133 425.60 _421.10 3.38 eee~~a~unq•••° CB-27 CB-28 CB-27 425.54 O.fiO 1.41 6.11 6.36 15" 31 421,20 420.90 0.97 28'LX12'WX22"D 15'LX12'WX22°D . ~N CARO CLASS BRIP-RAP W/ CLASS BRIP-RAP W/ C8-28 GB-29 CB-28 426.25 0.80 1.67 7.27 8.57 15" 119 420,70 418.60 1.76 FABRIC LINER FABRIC LINER CB-29 CB-30 CB-29 422.97 0.70 1,78 8.12 10.85 15" 181 418.30 413.20 2.82 _ SINGLETARY, ROBERT G & LISA M GILLIAM, MICHAEL E & ANNE F PURDY MORRIS FORREST & DONNA t'~~$~ y' ~9 d50=13" d50=13° CB-30 CB-19 CB-30 417.90 0.55 2,08 9.32 13,65 18" 118 412.90 410.90 1.69 8117 NETHERLANDS DR RALEIGH ~ • Q~ ~Nti. 8205 NETHERLANDS DR 8213 NETHERLANDS DR RALEIGH NQ q • ; V10=13,60 FPS _ FES-3t CB-32 - 0.40 13.48 38.93 73.93 42" 37 409A0 408.80 0.54 NC 27606-9605 BATCHELOR, ALAN D & LYNETTE M RALEIGH NC 276D6-9659 YOUNG JASON E & SHANNON R 27606-9659 t ~ ~ a 0761.04 50 5535-000 8201 NETHERLANDS DR RALEIGH _ ~ SEAL • CB-32 CB-33 CB-32 416.37 0.80 1376 40.55 86.54 42" 27 408.70 408.50 0.74 R-40 0761,04 50 5899-000 8209 NETHERLANDS DR RALEIGH 0761.04 51 5188 D00 NC 27606-9659 R-40 R-40 : 284 o CB-33 FES-34 CB-33 416.37 0.75 1402 41.96 153.57 42" 60 408.Op 406.60 233 \ 0761.D4 50 5773-000 NC 27606-9659 ~ ~ 0761.04 51 5084-000 • • ~ ee - 5 CB-36 CB-35 421.04 0.70 020 L01 5.56 15" 27 416.90 416.70 0,74 CB 3 R-40 4 ~ • R-40 • a IN ~ e P • CB-36 FES-37 CB-36 421.04 0.80 0.32 1.70 5.56 15" 27 416.60 416.40 0.74 • ~ ~ X00 f Y 0' ,e• I YI-41A C8-41 YI-41A 411.50 0.42 3.79 11.49 22.17 18" 134 408.OD 401.70 4.70 _ _ _ ~ CB-41 CB-42 CB-41 406.14 0.48 5.13 16.13 17.26 18" 37 401.60 400.60 2.70 CB-42 YI-43 CB-42 405.36 0.75 6.01 19.78 22.58 18" 143 398.10 391.50 4.62 X216 0~- YI-43 JB-44 YI-43 395.00 0.50 6.21 20.50 - 24"M 118 391.00 388.70 1.95 JB-44 FES-45 JB-44 400.00 0.50 621 20.50 - 24"* 87 388.50 386.10 2.76 CB-47 CB-42 CB-47 402.92 0.50 0.62 2.24 4.88 15" 106 398.90 398.30 0.57 ALL CONSTRUCTION SHALL BE KING, EDWIN M & DOF EDWIN M & DOROTHY L NETHERLANDS DR GRAPHIC SCALE IN ACCORDANCE WITH CB-39 FES-40 CB-39 411.30 0.73 0.89 4.69 14.44 15" 82 407.10 403.00 5.00 8113 NETHERLANDS 0 RALEIGH NC 27606- ;H Nc 27606-9605 so 0 3o so ,so CURRENT TOWN OF CARY ~ I17F1 f14 5fl F47Q-flfll ~a 5n Fa~a-nnn a T R-40 STANDARDS AND s NOTES; i inch = 60 ft. SPECIFICATIONS. 1. ALL PIPE SHALL BE CLASS III RCP UNLESS OTHERWISE NOTED. 2. SHOWN IN PIPE SIZE COLUMN DENOTES 0-RING GASKET PIPE SHALL BE USED. a Sheet No, No. Revision Date B Designer Scale 1"=60' N 1. PER TOC IST REVIEW 10/23/04 BDH W&R Drawn By Date GRAI 0 GRADING & STORM DRAINAGE WITHERS R"ENEL SOUTHERN SECTION I PLANNERS I SURVEYORS AL 4-7-04 GREYHAWK SUBDIVISION s Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: 919-469-3340 tax: 919-467-6008 www.withersravenel.com 0o WAKE COUNTY CARY NORTH CAROLINA s BW 204028, Y