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HomeMy WebLinkAboutSW6130203_Stormwater Report_20130225Family Dollar Store #705283 Harnett County, North Carolina February 2013 Stormwater Management Plan Calculations by: Jim Chandler, PE Chandler Engineering, PA 309 S. Fuquay Avenue Fuquay-Varina, NC 27526 Ph:919-552-4845 Fax:919-552-6962 s CONTENTS Stormwater Narrative USGS Map ✓NRCS Soils Map Vi"recipitation Intensity Charts ✓Infiltration Basin Dewatering Calculations 'Infiltration Routing Calculations Wetland Investigation Letter 11-Soils Report Property Deed Secretary of State Report Stormwater Narrative Project Name: Family Dollar Store #705283 Location: Buffalo Lake Road, Harnett County, NC Owner: Allied Development, Inc. E. Frank Weaver, III - President 350 Wagoner, Drive Fayetteville, NC 28303 Phone: 910-433-0888 Consultant: Chandler Engineering, PA Jim Chandler, PE 309 S. Fuquay Avenue Fuquay-Varina, NC 27526 Phone: 919-390-4227 Project Description and Narrative: The proposed project is inside Harnett County'sjurisdictional limits and is located along Buffalo Lake Road, approximately 1.7 miles south of the intersection of Buffalo Lake Road and NC Hwy 27. The site is immediately adjacent to the Food Lion grocery store located at 1655 Buffalo Lake Road. The scope of this project will include the construction of a 8,250 sf Family Dollar Store. The overall design and permitting for this project is being completed by Dan Miller of Withers & Ravenel. They are coordinating the required planning approvals through Harnett County and erosion control approvals through NCDENR-Land Quality Section. Copies of their appropriate sheets are included in / the plan sets. ,Our firm is responsible for handling the permanent stormwater management design for ✓ this project and its placement on the adjoining tract owned by our client noted above. The reason for this is that the balance of the tract, +/- 300 acres, owed by Allied Development, Inc. is currently being master planned by our office as a PUD submittal to Harnett County to develop +/- 8 acres of further commercial area, +/- 100 apartment units and +/- 200 single-family residential lots. This will be designed to County standards to include curb and gutter and thus will require a high density permit. At this time the stormwater management will be dealt with regionally and will include the current development of the Family Dollar Store by Withers & Ravenel. Until such time, it is the intent to /develop a temporary, acting as permanent, device to handle:their immediate needs. Amanda Bader, ✓ Stormwater Administrator for Harnett County, is aware of our plans and has approved this approach., The site is comprised of 1.19 aces but also includes an off -site driveway extension that comprises another 0.47 acres creating a total drainage area of 1.66 acres which has been accounted for in our design. The site discharges by three methods, a driveway stub for future connection, a pipe system discharge and a proposed roadside swale. We account for collecting and treating all drainage into one elongated infiltration basin. There are no known wetlands,.endangered species or flood plain located on this site. A copy of the USGS map is included that shows the site drains to an un-named tributary to Mire Branch Creek, a part of the Cape Fear River Basin. Also included is a letter from a licensed soil scientist confirming, �that.no_wetlands exist. The Natural Resources Conservation Service (MRCS) web based soils report has been used to identify that the onsite soil types are Lakeland Sand which is a Hydrologic Soil Group type "A". A copy of this mapping is included. This has also been verified by the soil scientist that performed the infiltration testing on site. A copy of their report is also attached. The portion of the site being treated drains via slight sheet flow from north to south. A drainage area delineation is included on the plan sheet. Since the site area is so small, a Tc of 5 minutes has been assumed. An infiltration basin will be used to treat the new impervious area added to the Family Dollar site and the off -site driveway extension. Dewatering calculations are provided to demonstrate that the basin will completely drain within 5-days. The bottom surface area of the proposed basin will be 1,885 sf so only (1) infiltration test is required. However due to the length of the proposed basin, two (2) on site infiltration tests were performed. The results from these tests provided infiltration rates of 8.07 in/hr and 8.65 in/hr. The high number was thrown out and 8.07 in/hour was used for the routing calculations. The testing also reported that the SH WT elevation was not encountered within 12-feet of existing grade. Therefore, a separation of more than 2-feet is being provided. �N00 1-006— 1.5 �'2M ��nat�� -a"( R•_Stl"✓c�t%�u !fE%�K.J D -e- e S e-'VvC4 - Since this will be a temporary, acting as permanent, device, we wanted to avoid the implementation of a bypass system or a vegetative filter strip so the basin has been design to handle the 10-year event / using half of the tested infiltration rate. The County, due to downstream concerns in this area, also requires that the 100-year event be managed and reduced. Precipitation values were obtained the NOAA web site and are included. Pond Pack software was used to calculate the HGL rates using the SCS Method. A report of all the calculations is included and construction details are shown on the plan sheet. +l14otin i/,, A, sm i' USGS Map NRCS Soils Map Soil Map—Hameh County, North Carolina ie]w- b 35' 18 3i Map Scale 1 561 11 pfiled on A Rm (8 5' x 11") slieeL N Meters r 0 5 10 20 30 Feet 0 20 40 80 120 USDA Natural Resources Web Soil Survey 2/14/2013 Conservation Service National Cooperative Soil Survey Page 1 of 3 M' 16 41" 35' 18' 3T' Soil Map—Hamett County, North Carolina Map Unit Legend Harnett County, North Carolina (NC085) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI CaB Candor sand, 0 to 8 percent slopes 0.4 35.7% Lakeland sand, 0 to 8 percent slopes 0.7 64.3% �La alsfor Area of Interest 1.1 100.0% USDA Natural Resources Web Soil Survey 2/14/2013 e Conservation Service National Cooperative Soil Survey Page 3 of 3 NCDFNR Stormwater BMP Manual Revised 06-16r09 Table 3-4 Hydrologic soil groups for soil types Found in North Carolina (Malcom, 1989) Alaga A Dragston D/C Louisa B Ridgeland C Alamance B Dunbar D/B Louisburg B Rimini C Albany C/A Duplin C/B Lucy A Roanoke D Altavista C/B Durham B Lumbee D/C Rosman B Americus A Dykes B Lynchburg C/B Rumford B Appling B Edneyville B Lynn Haven D/C Ruston B Ashe B Elbert D Madison B Ruttege D/B Augusta C Flioak B Magnolia B Saluda C/B Avery B Elsinboro B Mantachie C/B Scranton D/B Aycock B Enon C Manteo D Seneca C/B Barclay C Eustis A Marlboro B Starr B Barth C Exam C/B Masada B State B Bayboro D/C Faceville B Maxton B Suncook A Bertie C/B Fannin B Mayodan B Surry B Bibb D/B Fletcher B McColl D/C Talladega C Bladen D/C Fuquay B Mecklenburg C Tallepoosa C Blaney B Georgeville B Meggett D/C Tate B Blanton A Gilead C Molena A Taturn B Bowie B Goldsboro C/B Musella B Thurmont B Braddock B Goldston C Mvatt D/C Toccoa B Bradley B Granville B Nahunta C/B Toisnot C/B Brandywine B Grover B Nason C Torhuna C/A Brevard B Guin A Nixonton B Toxaway D Bucks 13 Gwinnett B Norfolk B 'Transylvania 13 Buncombe A Hartsells B Ochlockonee B Troup A Burton B Hatboro D/C Ocilla C/B Tuckerman D/C Byars D I-Iayesville B Olustee D/C Tusquitee B Cahaba B Haywood B Onslow B Unison B Cape Fear D/B Helena C Orange D Vance C Caroline C Herndon B Orangeburg B Varina C Cartecay C Hiwassee B Osier D Vaucluse C Cataula C Hoffman C Pacolet B Wadesboro B Cecil B Hulett B Pactolus C/A Wagram A Chandler B Hyde D/C Pamlico D/C Wahee D/C Chastain D ]nvershiel C Pantego D/C Wake D Chester B Iredell D Pasquotank D/B Watauga B Chesterfield B luka C Pelham D/C Wedowee B Chewacla C Izagora C Pander D Chipley C/A Johnston D/B Penn C/B Clifton B Johus C/B Pinkston C Codurus C Kalmia B Plummer D/B Colfax C Kenansville A Pocalla A Comus B Kershaw A Pocomoke D/B Congaree B D/C Pomello C/A Cowarts C akelan A Ponzer D/C Coxville D/C Lea t D/C Porters B Craven C Lenoir D/B Portsmouth D/C Davidson B Leon C/B Rabun B Delanco C Liddell D/C Rains D/B Dorovan D Lloyd B Ramsey D Dothan B Lockhart B Ranger C Stormwater Management and Calculations 3-8 July 2007 Precipitation Intensity Charts 2114/13 Precipitation Frequency Data Sener NOAA Atlas 14, Volume 2, Verson 3 Location name: Sanford, North Carolina, US Coordinates: 35.3102,-79.0425 } �, Elevation: 434 R` _ 'source Google Maps✓ POINT PRECIPITATION FREQUENCY ESTIMATES G.M. Bonnin, D. Martin, S. Lin, T. Pamybak M.Yelda, and 0. Riley NOAA, National Weather Service, Silver Sprang, Maryland PF tabular I PF graphical I Maps & aerials PF tabular FIDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Average recurrence interval (years) Duration�� ( J 10 25 50 100 200 500 1000 0.728 0.778 0.825 0.667 0.918 0.956 5-min 0.433 (0.393-0.482) 0.511 (0.464-0.569) 0.595 (0.539-0.661) 0.656 (0.594-0.728) (0.655.0.806) (0.699-0.860) (0,737-0.911) (0.771-0.958) (0.809-1.01) (0.837-105) 1.05 1.16 1.24 1.31 1.38 1.45 1.50 10-min ( 0.692 ) 0628-0.769 ( 0.818 0742-0.909) 0.953 (0.864-1.06) (0.949-1.16) (1.04-1.28) 1 (1.11-1.37) 1 (1.17-145) 1 (1.22-1.52) 1 (1.28-1.60) (1.32-1.66) 1.57 1.66 1.73 1.83 1.89 15-min 0.865 (0.704-0.962) 1.03 (0.932-1.14) 1.21 (1.09-1.34) 1.33 (1.20-1.47) 1.47 (1,32-1.63) (1.41-1.73) (1.48-1.83) 1 (1.54-1.92) (1.61-2.02) (1.65-2.09) 1.92 2.18 2.36 2.54 2.70 2.91 3.06 30-min 1.19 (107-1.32) 1'42 (1.29-1.5B) 1.71 (1.55-1.90) (1.74-2.13) (1.96-2AI) (2.12-2.61) (2.27-2.80) (2.40-2.98) (2.56-3.21) (2.6B-3.38) 2.90 3.20 3.50 3.79 4.17 4.47 60-min 1.48 (1.34-1.64) 1.78 (1.62-1.98) 2.19 1 (1.99-2.44) 2.50 1 (2,27-2.78) (2.61-3.21) 1 (2.88-3,54) (3.12.3.86) (3.37-4.18) (3.67-4.61) (3.91.4.93) 3.56 3.97 4.38 4.80 5.36 5.79 2-hr 1.74 2.10 2.63 3.03 (1.56-1.95) (1.89-2.36) (2.36-2.95) 1 (2.71.3.39) (3.17-3.98) (3.52-4.44) (3.87-4.90) 1 (4.21-5.36) (4.65-5.98) (4.99.6.47) 3.87 4.36 4.87 5.39 6.13 6.71 3-hr 1.85 2.23 2.81 3.25 ( 166-2.07) (2.02-2.51) (2.52-3.15) (2.92-3.65) (3.45-4.33) (3.86-4.88) (4.28-5.44) 1 (4.71-6.02) (5.29-6.B4) (5,73-7.49) F 4.64 F 5.25 F 5.88 F 6.54 7.47 8.21 6-hr 2.20 IF 2.66 1 3.35 IF 3.89 (2.00-2.44) 1 (2.42-2.95) 1 (3.04-3.71) 1 (3.52-4.30) 1 (4.17-5.12) (4.69-5.79) (5.21-6.48) 1 (5.74-7.19) (6.46-8.20) (7.03.9.03) 12�hr 2.60 3.14 3.97 4.64 5.58 6.35 7.16 (6.30.7.86) 8.02 (6.98-8.80) 9.25 ) (7.93-10.1 ( 10.2 8.67-11.2) J (2.36-2.88) (2.86-3.49) (3.60-4.41) (4.19-5.14) (4.99-6.15) (5.64-6.98) 24-hr O6 3.70 4.67 5.44 6.49 7.33 8.20 9.10 1 J 3.31) (3.43-4.00) (4.33-5.05) (5.03-5.87) (5.98-7.01) (fi.74-7.91) (7.52-8.84) (8.32.9.81) -11 (9.40-11.2) .3-1 (10.3-12.2) 2-day 4.29 5.38 6.24 7.42 8.35 9.32 10.3 1 (9.43-11.1) 11.7 (10.6-12.6) 12.8 (11.6-13.8) (3.31-3.83) 1 (3.99-4.62) 1 (5,00-5,79) (5.78-6.71) (6.84-7.97) (7.69-8.98) (8.55-10.0) 7.77 8.74 9.73 10.8 12.2 13.3 3-day 3.78 4.55 5.67 6.55 (3.52-4.05) (4.24-4.86) (5.27-fi.08) (6.08-7.01) (7.18-8.32) (8.05-9.36) (8.95-10.4) (9.86-11.5) (71.1-13.1) (12.1.14.3) 6.86 8.12 9.12 10.1 71.2 72.7 13.8 4-day IF 4.00 (3.73-4.27) 4.So (4.49-5.13) 5.95 (5.55-6.36) (6.39.T32) (7.53-8.66) (8.42-9.73) (9.35-10.8) (10.3.12.0) (11.6-13.6 ) (12.6-14.8 ) 10.2 11.3 12.4 14.0 15.2 7-day 4.62 5.52 6.75 7.74 9.09 (4 .31-4.95) (5.14-5.9i) (6.29-7.24) (7.20-B.29) (8.42-9.72) (9.40-10.9) 11 (10.4-12.1) (11 4-13.3) (12.8-15.0) 11.0 12.1 13.2 14.7 15.9 10-day 5.27 (4.955.61) 6.28 (5.89-6.68) 7.57 (7.10-8.05) 8.59 (8.04-9.13) 9.96 1 (9.29-10.6) 11 (10.3-11.7) (11.2-12.9) (12.2.14.1) (13.6-15.7) (14.6-17.0) 14.1 15.4 16.7 18.5 19.9 20-da 7.09 (6.66-7.Sfi) 8.39 (7.88.8.94) 9.95 (9.33-10.6) 11.2 (10.5-11.9) IF12.8 (12.0-13.7) (13.1-15.0) (14.3-16.4) (15.5-17.9) (17.1-19.8) (18.3-21.3) 13.5 15.2 16.6 18.0 19.3 21.1 22.5 30-day 8.83 ) (8.31-9.39 10.4 ) (9.79-11.1 ( 12.1 11.4-12s) (12.7-14.3) (14.3-16.2) (15.5.17.7) (16.7-'19.1 ) (18.0-20.6) (19.6-22.5 ) ( 20.8-24.0) 18.5 19.9 21.4 22.8 24.6 26.0 45-day 11.2 ) (10.6-11.9 13.1 ) (12.4-13.9 ( 15.1 14.2-15.9) 16.6 (15.6-17.5) (17.4-19.6 ) (18.7-21.1 ) (20.0-22.6 ) (--IF 21.3-24.1 ) (-IF 22.9-26.1) (24.2-27.7) 21.6 23.1 24.7 26.2 28.1 29.6 (12.7-14.2 75.7 ) 14.9-16.5 ( 17.8 ) 16.9-18.8 ( 19.4 18.4.20.5) (20.4-22.7) (21.8-24.4) (23.2-26.0) (24.6.27.6) (21 29.7 ) ( 27.6-31.3) 1 precipitation frequency (PF) estinetes in this table are based on frequency analysis of partial duration series (FOSS). Numbers in parenthesis are PF estirretes at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estinetes (for a given duration and average recurrence interval) w iA be greater than the upper bound (or less than the lower bound) is 5%. Estinetes at upper bounds are not checked against probable nezinum precipitation (F1.Rr1 estirretes and Play be hgher than currently valid PWvalues. Please refer to NOAA Atlas Is documentfor nore irdorrmton. Back to Too PF graphical hdsc.tlws.noaa.govbdsc/pfds/pfdsyrintpag e.hbml?Ia1=35.3102&Ion=-79.0425&data=depth&units=engIish&series=rids 114 2/15/13 . Precipitation Frequency Data Server NOAA Atlas 14, Volume 2, Verson 3 Location name: Sanford, North Carolina, US'"r`' Coordinates: 35.3102,-79.0426 Elevation: 434 W 'source: Google Maps POINT PRECIPITATION FREQUENCY ESTIMATES G.M. Sonnin, D. Martin, B. Lin, T. Pareybok M.Yelda, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1 Duration Average recurrence interval (years DI � J 10 25 50 100 200 500 1000 5.20 6 3-IF 7.14 7.87 8.74 9.34 9.90 10.4 11.0 5-min 11.5 (4.72.5.78) 1 (5.57-6.83) 1 (6.47-7.93) 1 (7.13-8.74) 1 (7.86-9.67) 1 (6.39-10.3) 11 (8.84-10.9) (9.25-11.5) 1 (9.71-12.2) 1 (10.0-12.7) 4.15 4.91 5.72 6.29 6.91 7.43 7,87 10-min 8.25 8.71 9.03 (3.77-4.61) (4.45-5.45) (5.18-6.35) (5.69-6.98) (6.26-7.70) (6,68-8.22) (7.03-8.69) (7.34-9.11) (7.67-9.62) (7,91-9.97 ) 3.46 4.11 4.82 5.31 S.BB 6.27 6.63 15-min 6.94 7.31 7.56 (3.14-3.85) (3.73-4.57) (4.37-5.36) (4.BD-5.89) (5.29-6.51) (5.64-6.94) (5.92-7.32) (6.17-7.66) (6.44.8.07) (6.62-8.34 ) 2.37 2.84 3.42 IF 3.85 4.35 IF 4.72 5.07 5.40 5.81 30-min 6.12 (2.15-2.64) 1 (2.58-3.16) 1 (3.10.3.80) 1 (3.48-4.27) (3.92-4.82) 1 (4.24-5.22) (4.53-5.61) (4.80-5.96) (5.12-6.42) (5.36-6.76) 1.48 IF1.78 IF2.19 JF 2.50 F 2.90 IF 3.20 3.50 3.79 4.17 F 60-min 4.47 (1.34-1.64) 1 (1.62-1.98) 1 (1.99-2.44) 11 (2.27-2.78) 1 (2.61-3.21) 1 (2.88-3.54) (3.12-3.86) (3.37-4.18) (3,67-4.61) (3.91-4.93) 0.868 1.05 1.31 1.51 1.78 1.99 2.19 2.40 2.68 2-hr 2.90 (0.780.0.975) (0.946-1.18) 1 (1.18-1.47) 1 (1.36-1.59) 1 (1.58-1.99) 1 (1.76-2.22) 1 (1.93-2.45) (2.10-2.68) (2.33-2.99) (2.50-3.24) 0.615 07447F 0.934 F 08 IF 29 F 45 IF1.62 1.80 3-hr 2.04 2.23 (0.553-0.691) (0.671-0.836) (0.841-1.05) (0.973-1.22) 1 (1.15-1.44) 1 (1.29-1.62) 1 (1.43-1.81) (1.57-2.00) (1.76-228) (1AI-2.50) 0.368 0.445 0.559 0.650 0.775 0.877 0.982 1.09 1.25 1.37 6-hr IF (0.334.0.408) (0.405-0.493) (0.507-0.619) (0.588.0.719) (0.696-0.856) (0.783-0.967) (0.869-1.08) (0.958-1.20) (1.08-1.37) ( 1.17-1.51) 0.216 0.261 0.330 0.385 0.4 0.527 0.594 0.666 0.768 12-hr 0.651. ( 0196-0.239) (0.237-0.289 ) (63 0299.0.366) (0.348-0.426) (0.414-0.510) (0.468-0.580) (0.523-0.652) (0.580-0.730) (0.658.0.842) (0.719-OA32) 0.128 0.154 0.195 0.227 0.270 0.306 24-hr 0.342 0.379 0.431 0.472 (0.118-0.138) (0.143.0.167) (0.180-0.210) (0.209-0.245) (0.249-0.292) (0.281-0.330) (0.313-0.368) (0.347-0.409) (0.392-0.465) (0.427-0.509) 0.074 0.089 0.112 0.130 0.154 0.174 0.194 0.215 0.243 0.266 2-day (D.069-0.080) (0.083-0.096) (0.104-0.121) (0.120-0.140) (0.143-0.166) (0.160-0.187) (0.178-0.209) (0.196-0,231) (0.221-0.263) (0.241.0.287) 0.052 r 0. 663 0.079 0. 9 F 0.108 F 0.121 0 3-5 0-14 97F 0.169 1 0.185 3-day (0.049-0.056) (0.059-0.068) (0.073-0,084) (0.084-0.097) (0.100-0.116) (0.112-0.130) (0.124-0.145) (0.137-0.160) (0.154-0.182) (0.168-0.199) 0.042 0.050 FO.062 0.072 0.085 IF 0.095 F 0.106 1 0.117 IFO.132 0.144 4-day (0.039.0.045) (0.047-0.053) (0.058-0.066) (0.067-0.076) (0.078-0.090) (O.OBB-0.101) (0.097-0.113) (0.107-0.125) (0.121-0.141) (0.131-0.154) 0.027 0.033 0.040 0.046 0.054 0.060 0.067 0.074 0.083 0.090 7-day (0.026-0.029) (0.031-0.035) (0.037-0.043) (0.D43-0.049) (0.050-0.058) (0.056-0.065) (0.062-0.072) (0.068.0.079) (0.076-0.089) (0.082-0,097) 0.022 0.026 0.032 0.036 0.041 0.046 0.051 0.055 0.061 0.066 10-da y (0.021.0.023) (0.025-0o28) (0.030-0.034) (0.033-0,038) (0.039-0.044) (0.043-0.049) (0.047-0.054) (0.051-0.059) (0.057-0.065) (0.061-0.071) 0.015 0.017 0.027 0.023 0.027 0.029 0.032 20-day 0.035 0.039 0.042 (0.014-0.016) (0.016-0.019) (0.019-0.022) (0.022-0.025) (0.025-0.028) (0.027-0.031) (0.030-0.034) (0.032-0.037) (0.036.0.041) (0.038-0.044) 0.012 0.014 0.017 0.019 0.021 0.023 0.025 0.027 0.029 0.031 30-da Y (0.012-0.013) (0.014-0.015) (0.016-0.018) (0.018.0.020) (0.020-0.022) (0.022-0.025) (0.023-0.027) (0.025-0.029) (0.027-0.031) (0.029.0.033) 0.010 F 0 0 27F 0.014 0.015 F 0.017 IF 00 87F 0.020 IF 0 02 IF 0.023 F 45-day (0.010.0.011) (0.011-0.013) (0.013-0.015) (0.014-0.016) (0.016-0.018) (0.017-OA20) (0.019-0.021) (0.020-0.022) (0.021-0.024) 0.024 (0.022.0.026) 0.009 0.011 0.012 0.014 0.015 0.016 0.017 0.018 0.020 0.021 60-day (pDO9-0.010) (0.010.0.011) (0.012-0.013) (0.013-0.014) (0.014. 0.016) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.021) (0.019-0.022) 1 precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). (for a Numbers in parenthesis are PF esarnates at lower and upper bounds of the 90% confidence interval. The probablily that precipitation frequEb..�ntds given duration and average recurrence interval) w4 be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upre not checked against probable mexinum precipitation (PMP) estimates and trey be higher than currently valid PW values, Please refer to NOVA Atlas 14 document for more information. Ill PF graphical hdsc.rn .nma.govhdscipfds/pfdsyrintpage.html71at=35.3102&tm=-79.0425&data=intensity&units=erlglish&series=pds 114 Infiltration Basin Dewatering Calculations Infil—tartiong-asin Dewatering DATE Calculations 2/15/13 PROJECT NAME PROJECT NO Family Dollar Store #705283 12-023 LOCATION BY Hanrnett County, NC JFC Dewatering Time for Water Quality Design Storm T=V/(2`K-A) Where: T= Dewatering time (days) V= Volume of water requiring infiltration (cf) _ (45,910 sf of new impervious area ' 1-inch) = 3,826 cf K= Hydraulic conductivity of the soil (in/hr) = 0.5 ' 8.07, since no bypass or strip) = 4.035 in/hr A= Effective infiltration area (so = area of basin bottom = 1,885 sf Therefore: T= 3,826/(2'4.035'1,885) = 0.25 days < 5 days so OK Infiltration Routing Calculations Type.... Master Network Summary Name.... Watershed File.... E:\Pondpack\Family Dollar.ppw MASTER DESIGN STORM SUMMARY Network Storm Collection: Harnett County-F Total Depth Rainfall Return Event in Type RNF ID Dev 1 3.0600 Synthetic Curve TypeIl 24hr Dev 10 5.4400 Synthetic Curve TypeII 24hr Dev100 8.2000 Synthetic Curve TypelI 24hr Node ID IB IB IB IB IB IB Page 1.01 MASTER NETWORK SUMMARY SCS Unit Hydrograph Method ('Node=Out£all; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=LeftSRt) 'OUT PRE 'OUT PRE 'OUT PRE *OUT -POST 'OUT -POST 'OUT -POST POST POST POST Return Type Event IN POND 1 IN POND 10 IN POND 100 OUT POND 1 OUT POND 10 OUT POND 100 JCT 1 JCT 10 JCT 100 JCT 1 JCT 10 JCT 100 AREA 1 AREA 10 AREA 100 HYG Vol cu.yd. Trun 248.35 668.45 1218.14 .00 .00 328.14 146.81 490.73 982.84 .00 .00 326.14 248.35 668.45 1218.14 Qpeak min 716.00 715.50 715.50 626.00 460.00 721.50 716.50 715.50 715.50 .50 .50 721.50 716.00 715.50 715.50 Qpeak cfs 2.85 7.83 14.06 .00 .00 10.17 1.50 5.66 11.52 .00 .00 10.17 2.85 7.83 14.00 Max Max WSEL Pond Storage ft cu.yd. -------------------- 429.01 97.95 430.39 325.10 430.78 411.29 SIN: FEYXYWJBTX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:05 AM 2/15/2013 Type.... Master Network Summary Name.... Watershed File.... E:\Pondpack\Family Dollar.ppw Node ID PRE PRE PRE MASTER NETWORK SUMMARY SCS Unit Hydrograph Method Page 1.01 (i 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 Type Event cu.yd. Trun min cfs ft cu.yd. AREA 1 146.81 716.50 1.50 AREA 10 490.73 715.50 5.68 AREA 100 982.84 715.50 11.52 SIN: FEYKYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley Pond?ack (10.00.023.00) 11:05 AM 2/15/2013 Type.... Design Storms Page 1.01 Name.... Harnett County-F File.... E:\Pondpack\Family Dollar.ppw Title... Project Date: 1/7/2013 Project Engineer: Jim Chandler Project Title: Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = Harnett County-F Storm Tag Name = Dev 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.0600 in Duration Multiplier = 1 Resulting Duration = 1440.00 min Resulting Start Time= .00 min Step= 6.00 min End= 1440.00 min Storm Tag Name = Dev 1D Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 10 yr Total Rainfall Depth= 5.4400 in Duration Multiplier = 1 Resulting Duration = 1440.00 min Resulting Start Time= .00 min Step= 6.00 min End= 1440.00 min Storm Tag Name = Dev100 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 100 yr Total Rainfall Depth= 8.2000 in Duration Multiplier = 1 Resulting Duration = 1440.00 min Resulting Start Time= .00 min Step= 6.00 min End= 1440.00 min S/N: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:05 AM 2/15/2013 Type.... Tc Calcs Page 1.01 Name.... PRE File.... E:\Pondpack\Family Dollar.ppw Total Tc: 5.00 min ------------------------- S/N: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:06 AM 2/15/2013 Type.... Tc Calcs Page 1.01 Name.... POST File.... E:\Pondpack\Family Dollar.ppw Total Tc: 5.00 min SIN: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 9:08 AM _ 2/15/2013 Type.... Runoff CN-Area Page 1.01 Name.... PRE File.... E:\Pondpack\Family Dollar.ppw RUNOFF CURVE NUMBER DATA .......................................................................... -------------------------------------------------------------------------- .......................................................................... Impervious Area Adjustment Adjusted Soil/Surface Description CN acres 8C 8UC CN ________________________________ ____ _________ _____ _____ ------ Open space (Lawns,parks etc.) - Poo 68 1.660 68.00 COMPOSITE AREA 6 WEIGHTED CN ---> 1.660 68.00 (68) ........................................................................... ........................................................................... S/N: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:06 AM 2/15/2013 Type.... Runoff CN-Area Page 1.01 Name.... POST File.... E:\Pondpack\Family Dollar.ppw RUNOFF CURVE NUMBER DATA .......................................................................... .......................................................................... Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN ---------- ------------- ----- ----- ------ Open space (Lawns,parks etc.) - Goo 39 .600 39.00 Impervious Areas - Paved parking to 98 1.060 98.00 COMPOSITE AREA s WEIGHTED CN ---> 1.660 76.67 (77) ........................................................................... ........................................................................... S/N: FEYXYWJ6TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:07 AM 2/15/2013 Type.... Vol: Elev-Area Name.... IB File.... E:\Pondpack\Family Dollar.ppw Page 1.01 Elevation Planimeter Area Al+A2+sgr(Al-A2) Volume Volume Sum (ft) (sq.in) (sq.ft) (sq.ft) (cu.yd.) (cu.yd.) 428.00 ----------------------------------------------- ----- 1885 0 .00 .00 429.00 ----- 3385 7796 96.25 96.25 430.00 ----- 4950 12428 153.44 249.68 431.00 ----- 6590 17251 212.98 462.66 431.50 ---- 7440 21032 129.83 592.49 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 S/N: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:07 AM 2/15/2013 Type.... Pond Infiltration Calcs Name.... IB File.... E:\Pondpack\Family Dollar.ppw INFILTRATION RATING TABLE CALCULATIONS Infilt.(cfs) _ (4.0350 (in/hr) . Area) ' Ku Where: Ku = units conversion factor W. S.Elev ft No storage at this elevation... 428.00 428.33 428.66 428.99 429.32 429.65 429.98 430.31 430.50 430.64 430.97 431.30 431.50 SIN: FEYXYWJ6TX2A Bentley PondPack (10.00.023.00) Total Area Infilt. sq.ft cfs --------- -------- infiltration set to zero. 1885 .00 2332 .22 2826 .26 3368 .31 3854 .36 4369 .41 4916 .46 5433 .51 5741 .54 5973 .56 6537 .61 7094 .66 7440 .69 Page 1.01 ,_ f3. D7/2. Chandler Palmer Speight Engineers, PP 11:08 AM 2/15/2013 Type.... Outlet Input Data Name.... Outlet 1 File.... E:\Pondpack\Family Dollar.ppw OUTLET STRUCTURE INPUT DATA Structure ID = W1 Structure Type = Weir -Rectangular ------------------------------------ $ of Openings = 1 Crest Elev. = 430.50 ft Weir Length = 20.00 ft Weir Coeff. = 3.000000 Weir TW effects (Use adjustment equation) Structure ID = TW Structure Type = TW SETUP, US Channel ------------------------------------ FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES... Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 £t Min. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs Page 1.01 SIN: FEYXYWJ8TX2A Chandler Palmer Speight Engineers, PA Bentley PondPack (10.00.023.00) 11:07 AM 2/15/2013 Wetland Investigation Letter HAL OWEN & ASSOCIATES, INC. SOIL & ENVIRONMENTAL SCIENTISTS P.O. Box 400, 266 Old Coats Road Lillington, NC 27546-0400 Phone (910) 893-8743 / Fax (910) 893-3594 www.halowensoil.00m 21 December 2012 Mr. Frank Weaver Allied Development Inc. 350 Wagoner Drive Fayetteville, NC 28303 Reference: Wetland Investigation Lots 5 and 6 Allied Investors, Inc Property Dear Mr. Weaver, A site investigation has been conducted for the above referenced properties, located on the eastern side of Buffalo Lake Road (SR 1115), Harnett County, North Carolina (see attached map). The purpose of this investigation was to determine the existence and extent of areas that exhibit the characteristics of jurisdictional wetlands under Section 404 of the Clean Water Act. All wetland determinations and delineations were made in accordance with the 1987 US Army Corps of Engineers Wetland Delineation Manual and appropriate regional supplements. Wetland areas are not present on these properties. The site is an upland sandhills formation and is excessively drained. I appreciate the opportunity to provide this service and trust that you will feel free to call on me again in the future. If you have any questions or need additional information, please contact me at your convenience. Sincerely, / "' A, 1/ ! --' — Hal Owen Licensed Soil Scientist Senior Environmental Scientist Soil Science Investigations • Wetland Delineations, Permitting, and Consulting Soils Report 'I - Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4540 Email mike0southeastemsoil.com February 6, 2013 Mr. Jim Chandler, PE Chandler Engineering, PA 309 S. Fuquay Avenue Fuquay-Varina, NC 27526 Re: Hydraulic conductivity (permeability) analysis & seasonal water table determination (SHWT) for stormwater retention areas, proposed Family Dollar Store, Buffalo Lake Road, Harnett County, North Carolina Dear Mr. Chandler, An evaluation of soil properties and hydraulic conductivity (Ksat) has been conducted at your request on the aforementioned property. The purpose of the investigation was to determine soil water table depths (SHWT) based on soil profiles. In addition, Ksat was to be provided at a depth 2.0 feet above the SHWT elevation for use with stormwater retention basin design. Saturated hydraulic conductivity of the unsaturated zone was measured in a similar method as described in the Soil Science Society of America Journal, Vol. 53, no 5, Sept. - Oct. 1989, "A Constant Permeameter for Measuring Saturated Hydraulic Conductivity of the Vadose Zone" and Comparison of the Glover Solution with the Simultaneous Equations Approach for Measuring Hydraulic Conductivity." This consists of advancing a small diameter bore hole to a predetermined depth (typically 2 feet above SHWT). At this depth, a constant head (pressure) was established and maintained. Flow measurements were made at timed intervals after flow stabilized. Soils at the proposed basin site are most similar to the Lakeland soil series (see attached boring logs). Two borings were advanced to depths of 12.0 feet. Seasonal High Water Table (SHWT) as determined by evidence of colors of chroma 2 or less (and/or concentrations of high redox mottles) was not encountered within 12.0 feet of the ground surface. SOILISITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS. EVALUATION 8 DESIGN Two compact constant head permeameter (CCHP) tests were conducted at depths of 2.00 feet above the SHWT level. The measured Ksat rates ranged between 20.515 and 21.981 cm/hr (equivalent to 8.07 to 8.65 inches/hour). The attached map shows locations of the sample points as well as Ksat locations. It should be noted that.the reported SHWT does not necessarily reflect the elevation of static groundwater (due to variations in groundwater recharge rates, annual rainfall, drought conditions, etc.). The data presented in this report are limited by a number of considerations. The primary consideration is that soil formations can be highly variable. The soils found on this site can be subject to inclusions of other soil types, perched water, artesian conditions and/or layers of undulating low permeability clay seams. These and other soil conditions can have an affect on the steady state of groundwater flow. To the extent possible, we have identified the soil types that will impact the flow of groundwater, and have provided a professional opinion as to the depth of SHWT. 1 trust this is the information you require at this time. SinccreI , Mike Eaker NC Licensed Soil Scientist #1030 ,�� sort 4z ! D �CF °)030 �0'�T ti?RtN Ct1- Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4W Email mike0southeastemsoil.com Measured Ksat Rates, proposed Family Dollar Store, Buffalo Lake Road, Harnett County, NC Test Ksat Ksat Location Depth in cm/hr in/hr 1 120 21.981 8.65 2 120 20.515 8.07 SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USEISUBDIVISION PLANNING • WETLANDS GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS. EVALUATION & DESIGN Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4540 Email mike®southeastemsoil.com Typical Soil Boring Log, proposed Family Dollar Store, Buffalo Lake Road, Harnett County, NC This map unit consists of excessively drained soils that formed in sandy deposits on uplands. Slope ranged from 0 to 2 percent. C1 - 0 to 18inches; brownish yellow (1 OYR 6/6) loamy sand; about 10 percent uncoated sand grains, weak granular structure; very friable; gradual wavy boundary. C2 - 18 to 36 inches; yellowish brown (1 OYR 5/8) sandy loam; weak granular structure; clear smooth boundary. C3 - 36 to 65 inches; strong brown (7.5YR 5/6) loamy sand; single grained; loose; gradual wavy boundary. C4 - 65 to 80 inches; strong brown (7.5YR 5/6) loamy sand; about 20 percent uncoated sand grains, single grained; loose; very friable; gradual wavy boundary. C5 — 80 to 86 inches; strong brown (7.5YR 5/6) loamy sand; common prominent pockets of brownish yellow (1 OYR 6/6) sand; single grained; loose; clear smooth boundary. C6 - 86 to 144 inches; strong brown (7.5YR 5/8) sandy loam; weak fine granular structure; very friable. SHWT greater than 144 inches SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS. EVALUATION & DESIGN P.O. Box 9321 CamMmiillu KIP 0GQH1 V X = Soil Boring/Ksat Locations (Family Dollar Site) Buffalo Lake Road, Harnett County, NC US State Plane 1983 Scale 1:3,000 DG-BUFF2.SSF North Carolina 3200 NAD 1983 (Conus) N 0 350.0 2J6/2013 1 ® — OPS PathfinAeroOffice D9 SurveyFeet a -Trimble. SOILISITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS GROUNDWATER DRAINAGEIMOUNDING • SURFACEISUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN Property Deed a-13 al . l'OPRI a: Wla/M $1800.00 Rea Exdw iu o ''``.. FILED BOOK �,'-7 q BOOKJII5_PACE �' '96 0PR 17 RM 10 24 CAYLE P.HOLDER OF DEEDS I;:.G":="T COUNTY, NC l STATE OfN COUNTY OF THIS D Cm NINGO INVEB 28334, hereinafte IIPC., Post Office hereinafter refer PREPARED BY 3OHNSON TILGHMAN, ATPOBBBY BOX 928, DUNN, NORTH CAROLINA 28335 PARCEL 003-9587-0020 4'th day of April, 1996, by and between 11 Clubhouse Drive, Dunn, North Carolina ea\to as Grantor, and ALLIED INVESTORS, That the Grantor, 'toe a Grantee, the receipt nd acknowledged, has and by these and convey unto the Grantee i or parcel of land situated North Carolina and more part c BEING all of a 366.169 as o tr as shown on map entitled, " Inc. ",'dated December 8, 199 , Associates, RLS, PA, and re ox Slide 260C, of the Harnett C North Carolina 28305, ideration paid by the of which Ss hereby s grant, bargain, sell all that certain tract nship, Harnett County, bed as follows: id, more or lose, ngo Investments, ad by Stencil 6 Plat Cabinet F, ACT Q=t BEING all of Lots No IV , 16, 17, 19, 20, 21 and 22 of "SunsRige iviaion, ction 1", as shown on plat recordat abinat F, ge 265-B, Harnett County Registt h map ferenae ie hereby made for a mare ul mplete olOaz, gee 939-910 and Deed Book 1049Pag es 2-7 anett . for Purthar reference.) BEING all that 2.39 seratrnd a own upon a map entitled, _ "Survey for S Ce re ter & Sewer District of Harnett County^a be 1994, prepared by Rowland D. wai er rveyor, No. L-2728, and recorded in Plat no ids 352-8, Harnett county Registry. (Sea e k 78, Page 161, Harnett County Registry for ej Terence.) e property hersinabove described was acquired by ra 1 18 [5, POPE, TD,OID4AN & TART P.O. Dn^e M Dunn, N.C. 28M deed dated February 28, 1994 from Fortune Five Enterprises, LLC, which deed is recorded in Book 1040 at Page 662, Harnett County Registry. A map showing the above described property is recorded in Plat Cabinet F, Slide 260C, Harnett County Registry. RAVE AND To HOLD the aforesaid tract or parcel of land and �leges and appurtenances thereunto belonging to the Grantee antor covenants with the Grantee that Grantor is _ e ad the p amises in fee simple, has the right to convey the e as la, that the title is marketable and free and clear of al on c s, and that Grantor will warrant and defend the tit a i Y the awful claims of all.persons whomsoever except for a apt hereinafter stated. Title to the property here a e is subject to the following exceptions: 1. a Ott ounty ad valorem taxes for calendar year 1996, not yet du an pa able; 2. t ctive covenants recorded in Book 1042 at Page 928, Harnett Coun y g at 3. Ea a s-of-way of record; 4. Any n the real property which lies within the rights of way of a Road 1139 and N. C. state Road 1115; and S. Easement at,Od, I wh or ch 995 from is recorded n Book 1089 at Mingo iInvestments, Inc. to Alltel Car 1 Page 851, Harnett C ty st IN NITHEED RHERE01,/thl a nd BY POPE, T ZHRUN & TAW caused this instrument to .y authorized officers and thority of its Board of bove written. , Inc. P.O. D,m,er M Dmaq N.C. YB!36 I' OF NORTH CAROLINA DF HARNETT �i/ 21i��e�%nip a Notary Public, do hereby hat D•. O. TEN persona y came before me this day and god that he is Secretary of NINGO INV88TKMrf8, INC. a olina corporation and that by authority duly given and as f the corporation, the foregoing instrument was signed in by its President, sealed with its corporate seal and by him as its Secretary. and and official stamp or seal, this /2�day of April, 11 115 'v �r w OTARY L MY COMMISSION EXPIRES: The foregoing certificate of �a to be correct. This inetrument an date and time and in the Book and OaYLa P. aOU"M R,VG TER 7 �0f aDS ay. '44A n 9C. ;ULE POPE, TUZH MN & TAR'i 4 are duly registered at the first page hereof. W/Aee4eeewa-Ragiet.r o: Deed. Q P.O. Dn nm 928 Dean, N.C. 2 5 h Secretary of State Report North Carolina Elaine F. Marshall DEPARTMENT OF THE Secretary SECRETARY OF S ATE PO Box 29622 Raleigh, NC 27626-0622 1919j807-2000 Date: 2/19/2013 here to: Document Filings I File an Annual Report JPrint a pre -populated Annual Report Form I Amended A Previous Annual Report I Names Name Name Type NC ALLIED DEVELOPMENT, INC. LEGAL NC ALLIED INVESTORS, INC. PREV LEGAL Business Corporation Information SOSID: 0382727 Status: Current -Active Effective Date: 11/22/1995 Annual Report Due Date: Citizenship: DOMESTIC State of Inc.: NC Duration: PERPETUAL Annual Report Status: CURRENT Registered Agent Agent Name: WEAVER III, E FRANK Office Address: 350 WAGONER DR. FAYETTEVILLE NC 28303 Mailing Address: 350 WAGONER DR. FAYETTEVILLE NC 28303 Principal Office Office Address: 350 WAGONER DR. FAYETTEVILLE NC 28303 Mailing Address: 350 WAGONER DR. FAYETTEVILLE NC 28303 Officers Title: PRESIDENT Name: FRANK WEAVER Business Address: 350 WAGONER DR. FAYETTEVILLE NC 28303