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HomeMy WebLinkAboutSW6111003_HISTORICAL FILE_20111014STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD Inc1745 Cypress Lakes Rd 7 Gooden & Associates, IHope Mills, NC 28348 14 Surve in �, Plannin , Ma in Phone: 910-223-7766 Y b g PP B FAX: 910-223-7788 iprevette a goodensurveying.com Mr. Robert Patterson NC DEN - Division of Water Quality Stormwater Permitting Unit Post -Construction Application 1617 Mail Service Center Raleigh, NC 27699-1617 RE: SHADOW CREEK STORMWATER PERMIT Mr. Patterson, October 12, 2010 V@RRWRI OLT 1 4 2011 y��� DENR-WATER QUALITY •+4�MAND STOR OTER FMCH Please find enclosed two sets of plans, the permit application, supplemental documentation, and check for $505. Please let me know if you have any questions or concerns Sincerely, 5/Pre Johvette, III, P.L.S. enclosures ❑ First Submittal EKRe-submittal Date Development/Project Name: S o Receiving stream name l2 o r, OK `/ Ti a_-fti R.A/ TO RUAE2T pft7 t Sa -c A F+tea i,V IW4-t -/- o k. ct 0Sr-(— Application Completeness Review Date Reviewed:/o /9 /I By Bill Diuguid� Classification: Liver Basin: C-A For post -construction requirements, a program will be deemed compliant for the areas where it is implementing any of the following programs: WS-I, WS-II, WS-III, WS-IV, HOW, ORW, Neuse River Basin NSW, Tar -Pamlico River Basin NSW, and the Randleman Lake Water Supply Watershed Nutrient Management Strategy. High Density Projects that require a 401/404 within an NSW require 85% TSS, 30% TN and 30% TP removal. T&E Species (Goose Creek, Waxhaw Creek or Six Mile Creek Water Sheds): Latitude and Longitude: 3y 59 /q Jurisdiction oke C.,.,7 Project Address: PH A� 6rcove C/,�k� Raket ""RA6GoKn Engineer name and firm: ToNN F �Rt V'rrt ; `"P: c,6` bee daN v A ss.� w`la s xN c. Ham., Phnna Q /n — Z2.? - Mll Prr nil Is the project confirmed to be in the State MSS Storrrfwater Permit jurisdiction? 2�Yes oT ❑ No ❑ Low Density (no curb and gutter) NrLow Density with curb and gutter outlets ❑ High Density ❑ Other FJIA- --&— 401/404 impacts to surface waters, wetlands, and buffers (add language to cover letter and/or add info letter) o%uA l q 7e a� Check for $505.00 included G✓Original signature (not photocopy) on application' n/<egal signature (Corporation-VP/higher, Partnership -General Partner/higher, LC embe m na a er Agent). I Check spelling, capitalization, punctuation:-http://www:s6cretitry.state.nc.us/corporations/thepage.aspx I If an agent signs the application, a signed letter of authorization from the applicant must be provided which includes the name, title, mailinq address and phone number of the person signing the letter. R"'For subdivided projects, a signed and notarized deed restriction statement . p ,Sealed, signed & dated calculations JK Correct supplement and O&M provided for each BMP on site (check all that were provided & number of each) ❑ Bioretention ❑ Dry Detention Basin ❑ Filter Strip ❑ Grass Swale Infiltration Basin ❑ Infiltration Trench ❑ Level Spreader ❑ Permeable Pavement ❑ Restored Riparian Buffer ❑ Rooftop Runoff Management ❑ Sand Filter ❑ Stormwater Wetland let Detention Basin ❑ Low Density ❑ Curb Outlet " ❑ Off -Site ❑ NCDOT Linear Road ca Two sets of sealed, signed & dated layout & finish grading plans with appropriate details o:/ arrative Description of stormwater management provided t�oils report provided Wetlands delineated or a note on the plans or in'the accompanying documents that none exist on site and/or adjacent property Details for the roads, parking area, cul-de-sac radii, sidewalk widths, curb and gutter; ❑Dimensions & slopes provided ;Drainage areas delineated ❑ Pervious and impervious reported for each ❑ Areas of high density :� MP operation and maintenance agreements provided Application complete ❑ Application Incomplete Returned: (Date) Comments May 5, 2011 Revision, Bill Diuguid SL 2006-246 Section 9 Post Construction Requirements, for Non -Coastal Counties Low -density projects T„ ., ❑ No more than two dwelling units per acre or 24% built -upon area; ❑ Vegetated conveyances to the maximum extent practicable; ❑ Built -upon areas at least 30 feet landward of perennial and intermittent surface waters; ❑ Deed restrictions, protective covenants, and/or other restrictive language/measures. High density projects ❑ Control and treat runoff from the first one -inch ofr!h 'ir, ❑ Runoff volume drawdown time must be a minimum of 48 hours, but not more than 120 hours; ❑ Discharge the storage volume at a rate equal to or less than the predevelopment discharge rate for the one-year, 24-hour storm. ❑ Achieve 85% average annual removal of total suspended solids. ❑ For BMPs that require a separation from the seasonal high-water table (SHWT), the separation shall include at least 12 inches of naturally occurring soil above the SHWT. ❑ Stormwater management measures must comply with the General Engineering Design Criteria For All Projects requirements listed in 15A NCAC 2H .1008(c); ❑ All built -upon areas are at least 30 feel landward of perennial and intermittent surface waters; ❑ Deed restrictions, protective covenants, and/or other restrictive language/measures ❑ Provide a mechanism to require long-term operation and maintenance of Best Management Practices Goose Creek, Six Mile Creek and Waxhaw Creek Watersh68sI,i i/' j: Buffer Requirements ❑ Undisturbed riparian buffers within 200 feet of water bodies within the 100-Year Floodplain and within 100 feet of water bodies that are not within the 100-Year Floodplain. Exceptions to the undisturbed buffer requirements are set forth in 15A NCAC 02B .0607 Stormwater Controls as required by 15A NCAC 02B .0602 ❑ Control and treat the difference between the pre-glevel6l mW&nt and post -development conditions for the one- year, 24-hour storm with structural controls. ❑ Development and redevelopment shall implement stormwater management measures that promote infiltration of flows and ground water recharge for the purpose of maintaining stream base flow. ❑ 85% average annual removal of total suspended solids. ❑ Draw down the treatment volume no faster than 48 hours, but no slower than 120 hours, for detention ponds. ❑ Discharge the storage volume at a rate equal or less than the pre -development discharge rate for the one- year, 24-hour storm. ❑ Meet design or stormwater management measures set forth in 15A NCAC 2H .1008. High Density Projects that require a 401/404 within an NSW ❑ 85% TSS ❑ 30% TN ❑ 30% TP May 5, 2011 Revision, Bill Diuguid Infiltration Basin 1 Shadow Creek Calculations G John E. Prevette III, P.L.S. L-4905 Gooden and Associates, Inc. 1745 Cypress Lakes Rd Hope Mills, NC 28348 910-223-7766 jprevette@goodensurveying.com Method Calculate the required treatment volume Determine basin dimensions to hold the treatment volume Calculate draw -down time Given Location: Southern end of Lot 17 (Near Soil Boring 1) Ksat: 13.14 in/hr Description Area (sq ft) % of Total SCS CN Rational C Lot built -upon area 42,000 15.3% 98 0.9 Street area 33,500 12.2% 98 0.9 Sidewalk area 5,300 1.9% 98 0.9 Yards area 194,400 70.6% 39 0.2 Total 1 275,200 1 100.0% 1 56 0.41 Soil Boring Data Surface Elev: 183.2' SHWT Depth: 98 inches SHWT Elev: 178.0' Infiltration Rate (Ksat) = 13.40 in/hr Oct 7. 2011 Page 1 of 2 Project # 10227 Gooden & Associates, Inc. Basin Dimensions This basin will not have an off-line bypass and will not utilize a vegetated filter strip. Therefore, this basin must provide volume for 2.5 times the regulated design storm and draw down the volume at half the infiltration rate. The runoff depth is calculated using the Simple Formula. Design Storm Depth = 1 in 2.5 x Storm Depth (dR„;„) = 2.5 in Total Drainage Area (A,) = 275,200 sq.ft. Impervious Area (A,) = 29.4% Runoff Depth (dR„„„p) _ (0.05 + 0.90 x A,) x dRnin = 0.786 in Treatment Volume (VWr,) = dRvnoff/12 x AT = 0.786/12 x 275,200 = 18,025 cu. ft. The volume of the basin is calculated using the prismoidal formula. Reasonable values are chosen for length and width at the bottom of the basin. Contours are generated to find the areas. h = 5.1 1 Slope=3:1 Length Width Area Bottom 55 36 1980 Middle 3556 Top 5500 Basin Volume (VR„,;„) = 6 (ABnt + 4A,nrd + AT.P) VR,,,;„ = 66' (1980 + 4 x 3556 + 5500) = 18,450 cu. ft. Because infiltration rate is given as depth -per -time, the total draw down time is calculated by dividing the height by the infiltration rate. Infiltration Rate (Kso!) = 13.14 in/hr Draw -Down Time T�) _ h _ 61.2 in _ ( ! Ksat 6.67 in/hr — 9.2 hours VBavin > VWQ and Tdd < 5 days :. the basin dimensions are adequate. Oct 7, 2011 Page 2 of 2 Project # 10227 Gooden & Associates, Inc. Infiltration Basin 2 Shadow Creek Calculations John E. Prevette III, P.L.S. L-4905 Gooden and Associates, Inc. 1745 Cypress Lakes Rd Hope Mills, NC 28348 910-223-7766 jprevette@goodensurveying.com Method Find basin dimensions: o Calculate the required treatment volume o Determine basin dimensions to hold the treatment volume 0 Peak flow attenuation o Route the 10-year 24-hour storm using half the infiltration rate Given Location: Between Lots 12 & 23 (Soil Boring 3) Ksat: 14.42 in/hr Description Area (sq ft) % of Total SCS CN Rational C Lot built -upon area 21,000 15.2% 98 0.9 Street area 11,100 8.0% 98 0.9 Sidewalk area 1,800 1.3% 98 0.9 Yards area 104.700 75.5% 39 0.2 Total 1 138,600 100.0% 53 0.37 Soil Boring Data Surface Elev: 154.0' SHWT Depth: 120 inches SHWT Elev: 144.0' Infiltration Rate (Ksat) = 14.14 in/hr Oct 7, 2011 Page 1 of 2 Project # 10227 Gooden & Associates, Inc. Basin Dimensions This basin will not have an off-line bypass and will not utilize a vegetated filter strip. Therefore, this basin must provide volume for 2.5 times the regulated design storm and draw down the volume at half the infiltration rate. The runoff depth is calculated using the Simple Formula. Design Storm Depth = 1 in 2.5 x Storm Depth (dB„,„) = 2.5 in Total Drainage Area (A7) = 138,600 sq.ft. Impervious Area (A,) = 24.5% Runoff Depth(dK„„ ff) _ (0.05 + 0.90 x A,) x dBatn = (O.OS + 0.90 x 0.245) x 2.5 = 0,676 in Treatment Volume (Vwo) = dKunoff/12 x AT = 0.676/12 x 138,600 = 7800 cu. ft. The volume of the basin is calculated using the prismoidal formula. Reasonable values are chosen for length and width at the bottom of the basin. Dimensions for the top are calculated from the bottom dimensions given side slopes and height. The middle dimensions calculated using half the height. h = 4.5 1 Slope=3:1 Length Width Area Bottom 18 45 810 Middle 1804 Top 3084 Basin Volume (V a;„) = 6 (ABor + 4A,nid + ATov) VB�;„ = bs (810 + 4 x 1084 + 3084) = 8330 cu. ft. Because infiltration rate is given as depth -per -time, the total draw down time is calculated by divided the height by the infiltration rate. Infiltration Rate (Ksat) = 14.42 in/hr Draw -Down Time (Tdd) = h = saZ21 inn/hr i4 Ksat = 7.5 hours VBasin > VWQ and Tdd < 5 days :• the basin dimensions are adequate. Oct 7, 2011 Page 2 of 2 Project # 10227 Gooden 8 Associates, Inc. 5V, ,II1003 Wet Detention Pond & Level Spreader Shadow Creek Calculations John E. Prevette III, P.L.S. L-4905 Gorden Associates, Inc. p`, 'FE55%p••: and 1745 Cypress Lakes Rd Hope Mills, NC 28348 910-223-7766 jprevette@goodensurveying.com Method - Find permanent pool dimensions: o Iterate dimensions to achieve an acceptable surface area to drainage area ratio - Find temporary pool dimensions: o Calculate the required treatment volume o Find the max stage needed to store the treatment volume - Find temporary pool draw -down orifice dimensions o Iterate orifice dimensions to find an acceptable flow that will drain the treatment volume in 2-5 days o The orifice flow must not exceed the pre -development 1-yr 24-hr peak flow - Find level spreader dimensions: NOTE., All formulas are taken from the Stormwater BMP Manual Given Description Area (sq ft) % of Total SCS CN Rational C Lot built -upon area 60,000 14.4% 98 0.9 Street area 31,400 7.5% 98 0.9 Sidewalk area 4,700 1.1% 98 0.9 Yards area 320,700 76.9% 39 0.2 Total Drainage Area 416,800 100.0% 53 0.36 Impervious Percentage = 23.1 % Tc = 15 minutes Rational i10yr = 5.34 in/hr 10-yr 24-hr precip = 5.52 in Rational i25yr = 5.98 in/hr 25-yr 24-hr precip = 6.69 Soil Boring Data Surface Elev: 136.4 SHVVT Depth: 47 inches SHWT Elev: 132.5' Infiltration Rate (Ksat) = 0.55 In/hr Oct 18, 2011 Page 1 of 6 Project # 07880 Gooden & Associates, Inc. Temp Pool Top Shelf Perm Pool Btm Shelf Btm Forebay Btm Pond [Figure 1] - Pond Dimensions n v a a n Q v w a a y d a y° � n E % LL a N cR G Q 133.2 6.2 1779 6702 7138 6139 4469 20648 8481 26687 8980 132.6 6.6 1474 6067 686 4001 2686 16078 7641 20079 3372 132.0 6.0 1271 4676 604 3316 2033 13392 6947 16707 131.6 4.5 1143 3466 2711 2711 9643 11360 4699 14071 128.0 1.0 406 1998 1817 1817 2404 1817 127.0 0.0 1636 1636 Permanent Pool Pollutant removal within a wet detention basin is dependent upon two integral components — average depth and permanent pool surface area. Average depth, is a function of the surface area, total depth, and side slopes, and must be recalculated if any of these dimensions change. Surface area is directly proportional to the total drainage area by a factor found in a table in the Manual. To find the factor in the table, the designer must know the percent of impervious area and the average depth of the permanent pool. Because surface area is dependent upon average depth, and average depth is dependent upon surface area, it becomes necessary to iterate pond dimensions to find an acceptable solution. This is an easy task with a spreadsheet. [Figure 11 shows the spreadsheet values for this basin. A best guess is made for lengths and widths at the permanent pool elevation. The spreadsheet then calculates incremental contour areas and prismoidal volumes as well as stage and storage values. The following values are extracted from the spreadsheet to calculate average depth: Permanent Pool Area (PP) = 5,947 sf Bottom of Shelf Area (BS) = 4,599 sf Bottom of Pond Area (BP) = 1,635 sf Depth from Bottom to Shelf (Depth)= 4.5 feet Oct 18, 2011 Page 2 of 6 Project # 07880 Gooden & Associates, Inc. Average Depth is calculated using method 2 in the Manual. day = [0.25 x (1 + PP)J + K 2 BP/ x \DBS h/J da = [0.25 x (1 + 5947)] + L(4599 2 16351 x (4599)]45 — 3.5 feet We use Table 10-3 in the Manual to find the ratio of surface area to drainage area. Table 10-3 is fed into the spreadsheet and a ratio is found by interpolation (double interpolation if necessary). This is shown in [Figure 2]. [Figure 2] — Double Interpolation of Table 10-3 3.5' 1 3.0 4.0 5.0 6.0 1 7.0 0.20 0.97 0.79 0.70 0.59 0.51 0.231—► 0.30 1.35 1.08 0.97 0.83 0.70 Interpolated SA to DA Ratio = 0.00982 SA = DA x 0.00982 SA = 416,800 x 0.00982 = 4093 sf The total permanent pool surface area shown in [Table 1] is acceptable. Regulations also require that the forebay contain 20% of the permanent pool volume. The chosen dimensions yield a forebay storage of 3315 cf and a total permanent pool storage of 16707 cf. The forebay contains 19.8% of the total volume and is sized appropriately. Oct 18, 2011 Page 3 of 6 Project # 07880 Gooden & Associates, Inc. Temporary Pool Regulations require treatment of the first one inch of rainfall because most common surface pollutants are carried away within this volume. Surface characteristics reduce the treatment depth from one inch of rainfall to some particular depth of runoff. This runoff depth — not the rainfall depth — is then applied to the Drainage Area to compute the runoff volume that must be treated. The Simple formula described in Chapter 3 of the Manual is used to calculate the runoff depth given impervious percentage and drainage area. The depth is multiplied by the total area and then divided by 12 to get cubic feet of treatment volume (WQP). Impervious Percentage (/) = 23.1 % Drainage Area (DA) = 416,800 sf Treatment Depth (dT) = (0.05+0.9x I)x 1 inch rainfall = 0.258 in W V = dT x DA 0.258 x 416800 — 8960 cf Q 12 12 [Figure 1] shows that at stage 6.2, the temporary pool will hold the required volume. Draw -Down Orifice In order to maximize filtration, the temporary pool volume should be completely drained no sooner than 2 days. However, maximum inundation should be limited to 5 days to reduce adverse affects on plant life and to free up space for the next storm. Regulations also require that the treatment volume be discharged at a rate equal to or less than the 1-yr 24-hr pre -development peak discharge rate. The standard Orifice Equation is used to determine average flow. The treatment volume is divided by the average flow to find the draw -down time: Coefficient of Discharge (C) = 0.614 Orifice Diameter (D) = 1.5' (0.125 feet) Oct 18, 2011 Page 4 of 6 Project # 07880 Gooden 8 Associates, Inc. Driving head (Ho) = (133.3 132) = 0.400 ft a Q = C x ,D x 2x32.2xHa Or x 0.1251 Q=0.614x 4 x 2x32.2x0.400=0.038ft3/sec Vol 1 8980 1 Drawdown Time =— x = x = 2.7 days Q a x 60 x 24 0.038 60 x 60 x— The Rational Method is used to determine the pre -development flow: Pre -development C = 0.20 Post -development C = 0.36 Drainage Area = 9.57 acres 1-yr 24-hr storm intensity = 0.13 in/hr Pre -development Q = C i A = 0.20 x 0.13 x 9.57 = 0.25 ft3/sec Post -development Q = C i A = 0.36 x 0.13 x 9.57 = 0.45 ft3/sec Flow through the orifice is 0.038 ft3/sec, which is less than the pre -development flow. The orifice will draw -down the temporary pool volume in 2.7 days, which is meets the 2-5 day restriction. Therefore, a 1.5 inch orifice is adequate for this pond. Oct 18, 2011 Page 5 of 6 Project # 07880 Gooden & Associates, Inc. Level Spreader The riser structure should be designed such that the flow to the level spreader is as near to 2 cfs as possible while keeping the drawdown time within the 2-5 day range. The pond was routed and the following hydrographs show the inflow into the pond and the outflow through the riser to the level spreader. The maximum flow to the level spreader is 1.6 cfs. The down slope vegetated filter is wooded. The level spreader must be 50 feet long per cfs. L = 50 x 1.6 cfs = 80ft [Figure 3 - Hydrographs] 10yr 24hr — Total Inflow: mode - Ls (OK) — Total Inflow: Node - Pond 3 (OK) 7 6 5- 0 4- c c = 3- m r 2 1 0 2 4 6 6 10 12 Time (hrs) Oct 18, 2011 Page 6 of 6 Project # 07880 Gooden & Associates, Inc. Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4540 Email mike* southeasternsoil.com April 19, 2011 Mr. John E. Prevette, III Gooden & Associates, Inc. 1745 Cypress Lakes Road Hope Mills, NC 28348 Re: Hydraulic conductivity (permeability) analysis & seasonal water table determination (SHWT) for stormwater retention areas, Shadow Creek Subdivision, Hoke County, North Carolina Dear Mr. Prevette, 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 at various locations. In addition, Ksat was to be provided at varying depths for use with stormwater retention pond 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." Soils at this site are most similar to the Lakeland, Blaney and Johnston soil series (see attached boring logs). Five borings were advanced to 10 feet. Seasonal High Water Table (SHWT) as determined by evidence of colors of chrome 2 or less (and/or concentrations of high redox mottles) was encountered at various depths in the individual borings (see attached boring logs). Four compact constant head permeameter (CCHP) tests were conducted at depths ranging from 5.0 to 6.0 feet. The attached map shows locations of sample points as well as Ksat locations. The attached chart provides a list or measured rates at the pond location. SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USEISUBDIVISION PLANNING GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN I trust this is the information you require at this time. Sincerely, Mike Eaker President %p Soft t,A O�NZw�am' Q. � 1030G� j Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4540 Email mike Osoutheastemsoii.com Measured Ksat rates, Shadow Creek Subdivision, Pittman Grove Church Road, Hoke County, NC Ksat Ksat Location Depth in cm/hr in/hr 1 72 33.38 13.14 2 71 29.30 11.53 3 70 36.63 14.42 5 60 1.396 0.549 SOILISITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USEISUBDIVISION PLANNING 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@southeastemsoll.com Soil Boring 1 & 3, Shadow Creek Subdivision, Pittman Grove Church Road, Hoke County, NC This map unit consists of excessively drained soils that formed in sandy deposits on uplands. Slope ranged from 2 to 6 percent. A - 0 to 4 inches; dark gray (IOYR 4/1) loamy sand; single grained; loose; few fine roots; clear smooth boundary. C 1 - 4 to 20 inches; yellowish brown (I OYR 5/4) sand; single grained; loose; gradual wavy boundary. C2 - 20 to 40 inches; yellowish brown (1 OYR 5/6) sand; single grained; loose; gradual wavy boundary. C3 - 40 to 71 inches, yellowish brown (1 OYR 5/6) sand; pockets of clean sand; single grained, loose; gradual wavy boundary. C4 — 71 to 120 inches; yellowish brown (1 OYR 6/6) sandy loam; weak fine granular structure; very friable. SHWT @ 99 inches in boring I (some 1 OYR 7/2) mottles SHWT greater than 120 inches in boring 3 SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 - Phone/Fax (910) 822-4540 Email mike@southeastemsoil.com Soil Boring 2, Shadow Creek Subdivision, Pittman Grove Church Road, Hoke County, NC This boring is located in the bottom of a borrow pit. The original map unit consists of excessively drained soils that formed in sandy deposits on uplands. Slope ranged from 2 to 6 percent. 0 to 8 inches; yellow (7.5YR 5/6) sandy loam fill. CI - 8 to 20 inches; yellow (7.5YR 5/6) sandy clay loam; weak fine subangular blocky structure, gradual wavy boundary. C2 - 20 to 26 inches; yellow (7.5YR 5/6) sandy clay loam; common distinct pale brown (1 OYR 6/3 mottles); weak fine subangular blocky structure; clear smooth boundary. C3 - 26 to 58 inches; yellowish brown (IOYR 5/6) sand; single grained, loose; gradual wavy boundary. C4 — 58 to 120 inches; yellowish brown (IOYR 5/8) sand; common distinct gray (IOYR 7/1) mottles; loose; very friable. SHWT @ 58 inches (10YR 7/1) SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 2B311 Phone/Fax (910) 822-4540 Email mike@southeastemsoil.com Soil Boring 5, Shadow Creek Subdivision, Pittman Grove Church Road, Hoke County, NC This map unit consists of well drained soils on uplands. These soils formed in loamy.and sandy sediments. Slopes range from 2 to 4 percent. A - 0 to 3 inches; dark grayish brown (10YR 4/2) loamy sand; weak fine granular structure, very friable; many fine roots; abrupt smooth boundary. E - 3 to 32 inches; light yellowish brown (2.5Y 6/4) loamy sand; single grained, loose; very friable; abrupt smooth boundary. BtI - 32 to 44 inches; brownish yellow (1 OYR 6/6) sandy clay loam; weak medium subangular blocky structure; firm, brittle in place; gradual wavy boundary. Bt2 - 44 to 47 inches; light yellowish brown (2.5YR 6/4) sandy clay loam; few medium distinct pale brown (I OYR 6/3) mottles; weak coarse subangular blocky structure; firm; brittle in place; clear wavy boundary. C - 47 - 97 inches; gray (10YR 6/1), reddish yellow (7.5YR 5/6) and yellowish brown (2.5Y 6/4) sandy clay loam; massive; very firm. C2 - 97 to 120 inches; gray (I OYR 6/1) sandy clay loam; massive; very firm; pockets of sand. SHWT @ 47 inches (1 OYR 6/1) SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USEISUBDIVISION PLANNING GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN 1745 Cypress Lakes Rd Inc Gooden & Associates, I lope Mills, NC 28348 Planning, Mapping Phone: 910-223-7766 Surveying, g PP g FAX 910-223-7788 Oct 7, 2011 STORMWATER NARRATIVE SHADOW CREEK HOKE COUNTY, NC 7 This site is totallyL pervio�with the exception of a single house and a few barns. The site contains wetlands at the southern end of the property along Rockfish Creek. Otherwise the soil is sandy and vegetation is either grassy pasture or wooded. This site falls quickly toward Rockfish Creek at about 10% slope. The existing parcel is zoned for 20,000 square foot lots and could easily be classified as a low density project. However, the steep slopes make the erosive potential extremely high with vegetated swales alone. Therefore, this development will include a storm drain pipe system and stormwater treatment BMPs. The soil is extremely permeable, which will allow infiltration basins to treat approximately half of the total runoff. The remainder of the runoff will be directed to a wet detention basin at the low end of the site. Lots 9, 10, 25, and 26 do not naturally flow into a catchable area. As such, builders on these lots will pipe or otherwise direct all runoff from impervious areas into one of the yard inlets. -- SOS1D: 1137199 Date Filed: 2/19/2010 9:28:00 AM Elaine F. Marshall State of North Carolina North Carolina Secretary of State Department of the Secretary of Stal C201003600073 Limited Liability Company ARTICLES OF ORGANIZATION Pursuant to §57C-2-20 of the General Statutes of North Carolina, the undersigned does hereby submit these Articles of Organization for the purpose of forming a limited liability company. The name of the limited liability company is: Pillmotn li► mat Of UEI named 690P Lu 2. If the limited liability company is to dissolve by a specific date, the latest date on which the limited liability company is to dissolve: (if no date for dissolution is specified, there shall be no limit on the duration of the limited liability company.) 3. 4. The name and address of each person executing these articles of organization is as follows: (State whether each person is executing these articles of organization in the capacity of a member, organizer or both. Note: This document must be signed by all persons listed here). Number and Street 7 0 1 ( i2d City, State, Zip Code FOU4-. 44t tl t W , N L 26304 County t U m Le jot, OC 5. The mailing address, if different from the street address, of the initial registered office is: Cj0 11 CU nn Lae, lare( )e91 i 6�h,,d*u& , bC 30e6 6. The name of the initial registered agent is: LOr r ✓^o 1 n e AA o k I- r 7. Principal office information: (Select either a or b.) a ❑ The limited liability company has a principal office. The street address and county of the principal office of the limited liability company is: Number and Street City, State, Zip Code County The mailing address, #'different from the street address, of the principal office of the corporation is: b. 2 The limited liability company does not have a principal office. 8. Check one of the following: _,/(i) Member -managed LLC: all members by virtue of their status as members shall be managers of this limited liability company. (ii) Manager -managed LLC: except as provided by N.C.G.S. Section 57C-3-20(a), the members of this limited liability company shall not be managers by virtue of their status as members. 9. Any other provisions which the limited liability company elects to include are attached. 10. These articles will be effective upon filing, unless a date and/or time is specified: This is the 2� day of J Q +l U.a r, 20 l b +� jP�-�►h Z9 1 $ YYl er 1„ �, Signature �, iUC 2� 306 �0r^ra,..e. �o (~-G?►- _ ryl(y�j�v �na�� Type or Print Name and Title lids �Q�rid�<;t31ud. Wwlber+9* i A t,28358 m6cWtJ No TGILI(rlclp 0. f—" 1J t- 2e -so q- �,Orraine. Mo��� 3ro28 eJ/tas�ord C.ri. ✓i14 v'q V NOTES: 1. Filing fee is S125. This document must be filed with the Secretary of State. CORPORATIONS DIVISION P.O. Box 29622 RALEIGH, NC 27626-0622 (Revised January 2002) (Form L-01) Instructions for Filing FIRST AMENDMENT TO OPERATING AGREEMENT l�O OF PITTMAN GROVE DEVELOPMENT GROUP LLC THIS FIRST AMENDMENT TO OPERATING AGREEMENT (this "Amendment") shall be effective as of the date set forth below, by and between the undersigned parties, with respect to company matters pertaining to PITTMAN GROVE DEVELOPMENT GROUP LLC, a North Carolina limited liability company (the "Company"). WITNESSETH: WHEREAS, the Articles of Organization of the Company were filed with the North Carolina Secretary of State on February 19, 2010 (the "Articles"); WHEREAS, Lorraine M. Mohler, Michael L. Harrell, Glenn R. Jernigan, Jr., and Gregory M. Caulder comprise the current Members of the Company, each owning a 25% Membership Interest and Percentage Interest in the Company (collectively, the "Interest" or "Interests"), said Interests having been created by the Articles, as well as that certain Operating Agreement of the Company dated April 15, 2010 (the "Operating Agreement'); WHEREAS, with the consent of all disinterested Members, Glenn R. Jernigan, Jr. and Gregory M. Caulder desire to convey their collective 50% Interests in the Company for cash consideration of $129,710.10, to the following persons: Jeff Wright (as to a 25% Interest); William G. Wright, Jr. (as to a 12.5% Interest); and James K. Wright (as to a 12.5% Interest); WHEREAS, it is noted that Michael L. Harrell died on January 30, 2011, and the Executor of his Estate (I I-E-261, Cumberland County), Shaun Harrell, executes this Amendment for the limited purpose of consenting to the conveyance transaction, on behalf of, and with the intent to bind, said Estate; WHEREAS, the parties hereby agree as follows: NOW, THEREFORE, for and in consideration of the covenants herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereby agree and the Operating Agreement is hereby amended as follows: 1. For cash consideration of $129,710.10, receipt of which is hereby acknowledged, Glenn R. Jernigan, Jr. and Gregory M. Caulder hereby transfer and convey their collective 50% Interest in the Company, as well any and all other right, title, and interest in the Company, to the following persons and in the following percentages: Jeff Wright (as to a 25% Interest); William G. Wright, Jr. (as to a 12.5% Interest); and James K. Wright (as to a 12.5% Interest), to have and to hold such Interests free of any lien, pledge, encumbrance, collateral assignment, or hypothecation; and Jeff Wright, William G. Wright, Jr., and James K. Wright hereby accept such transfer and conveyance. All disinterested Members hereby agree that Jeff Wright, William G. Wright, Jr., and James K. Wright shall be admitted and fully vested as Members of the Company (and Glenn R. Jernigan, Jr. and Gregory M. Caulder hereby resign as Members of the Company and relinquish any and all right therein); 2. The parties hereby agree to execute an amendment to the Articles simultaneously herewith, which shall be filed with the North Carolina of State, in order to update the names of the Members within the Company; 3. With respect to the Company bank account(s), it is agreed that $ 0.00 shall be refunded from said account(s) and collectively disbursed to Glenn R. Jernigan, Jr. and Gregory M. Caulder; 4. Glenn R. Jernigan, Jr., Gregory M. Caulder, and Lorraine Mohler hereby represent and warrant, for the benefit of Jeff Wright, William G. Wright, Jr., and James K. Wright, that all Company land assets are held free and clear of any liens; however, no representations are provided with respect to the any easements, restrictions, covenants or other title matters of record; any environmental or wetlands matters; any zoning or other development matters, which may encumber any such land assets; and, all such land assets remain subject to ad valorem taxes for the current year and subsequent years. For good and valuable consideration, Jeff Wright, William G. Wright, Jr., and James K. Wright hereby release and hold harmless Glenn R. Jernigan, Jr. and Gregory M. Caulder from any and all liability regarding any and all Company land assets and/ or other Company matters; 5. All parties agree that this Amendment shall fully comply with the transfer requirements of Article VIII of the Operating Agreement. [The Remainder of This Page Intentionally Left Blank] . IN WITNESS WHEREOF, the undersigned have executed this Amendment, as of the 19 day of July , 2011. THE COMPANY: Pittman Grove Development Group LLC By: ��/� b 4Li--- a. L ainet.M. Mohler, Member/ Manager (ME RS: � Lorraine M. Mohler [25% Membership/ Percentage Interest] Je ngk [25%Membership/ Percentage Interest] zl-K -4. kL� William G. Wrig r. [12.5% Membership/ Percentage Interest] 15 James K. Wrig . [I2.5%Membership/ Percentage Interest] Estate of Michael L. Harrell By: Shaun Harrell, Executor* [25% Membership/ Percentage Interest] [*It is noted that the Executor of the Estate of Michael L. Harrell executes this Amendment for the limited purpose of consenting to the conveyance transaction contemplated by this Amendment, on behalf of, and with the intent to bind, said Estate] [**By executing this Amendment, Glenn R Jernigan, Jr. and Gregory M. Caulder acknowledge that they no longer have any Membership Interest or Percentage Interest in the Company, nor any other right, title and interest in the Company, said Interests and other right, title and interest therein having been fully conveyed and transferred to Jeff Wright pursuant to the provisions contained herein] State of North Carolina Department of the Secretary of State Limited Liability Company AMENDMENT OF ARTICLES OF ORGANIZATION 00 p� Pursuant to §57C-2-22 of the General Statutes of North Carolina, the undersigned limited liability company hereby sub the following Articles of Amendment for the purpose of amending its Articles of Organization. The name of the limited liability company is: Pittman Grove Development Group LLC 2. The text of each amendment adopted is as follows (attach additional pages if necessary): Glenn R. Jernigan, Jr.and Gregory M. Caulder hereby resign as Members of the limited liability company. The current Members of the company are identified within the company's Operating Agreement, as amended, reference to which is hereby made. 3. (Check either a or b, whichever is applicable) a. The amendment(s) was (were) duly adopted by the unanimous vote of the organizers of the limited liability company prior to the identification of initial members of the limited liability company. b.__,/ The amendment(s) was (were) duly adopted by the unanimous vote of the members of the limited liability company or was (were) adopted as otherwise provided in the limited liability company's Articles of Organization or a written operating agreement. 4. These articles will be effective upon filing, unless a date and/or time is specified: rto be effective upon filing]. This the 19 day of July 2011. PITTMAN qRqVIE DEVELOPMENT GROUP LLC By: ftcr6ber'/ Manager NOTES: 1. Filing fee is $50. This document must be filed with the Secretary of State. (Revised January 2000) (Form L-17) CORPORATIONS DIVISION P. O. BOX 29622 RALEIGH, NC 27626-0622 Instructions for Filing LIMITED LIABILITY COMPANY AMENDMENT OF ARTICLES OF ORGANIZATION (Form L-17) Item 1 Enter the complete company name exactly as it appears in the records of the Secretary of State. Item 2 See form. Item 3 See N.C.G.S. §57C-2-22. Item 4 The document will be effective on the date and time of filing, unless a delayed date or an effective time (on the day of filing) is specified. If a delayed date is specified without a time, it will be effective at 11:59 p.m. Raleigh, North Carolina time on the day specified. If a delayed effective date is specified with a time, the document will be effective on the day and at the time specified. A delayed effective date may be specified up to and including the 90'h day after the time of filing. Date and Execution Enter the date the document was executed. In the blanks provided enter: • The name of the limited liability company as it appears in Item 1. • The signature of the representative of the limited liability company executing the document. • The name and title of the above -signed representative. North Carolina Beverly Eaves Perdue Governor Mr. John E. Prevette, III, PLS Gooden & Associates, Inc. 1745 Cypress Lakes Rd. Hope Mills, NC 28348 Dear Mr. Prevette: MC®ENR Department of Environment and Natural Resources Division of Water Quality Coleen H. Sullins Director October 18, 2011 Subject: Request for Additional Information Stormwater Project No. SW6111003 Shadow Creek Hoke County Dee Freeman Secretary The Division of Water Quality Central Office received a Stormwater Management Permit Application for the subject project on October 14, 2011. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 1. Please provide the supplement form and supporting calculations for the level spreader / vegetated filter strip (LSNFS). 2. The LSNFS detail on sheet C11 needs to specify the length of the lip and that it be constructed of concrete. 3. To prevent erosion of the VFS, a bypass shall be provided when flow rates from the wet pond exceed the capacity of the LSNFS. 4. The signing official, Mr. Jeff Wright, is not shown on the NC Secretary of State's website as being a managing member for the LLC. Please clarify. 5. Based on the soils report, the permanent pool elevation (PPE) of the wet pond appears to be approximately 4.5' below the SHWT. Additional analysis must.be performed and provided if the PPE is more than —0.5' below the SHWT to show that the pond will be able to function as required. Please see pages 10-9 and 10-10 of the BMP Manual for more information. Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to November 17, 2011, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. W. (lands and Storri ter 13 e!,ch On, 16 i7 Mail SaNIce Ce!"er, Rai :igh. North Carolina 27699 .617 Lc:ation. 512 N. Salisbury St. Ralegh, North Carolina 27iO4 Noh! h Cal olina P! ma: 91S �07-63001 FAX:' 19 907-. 941 Customer S rvi,:;;. 1- '7-623-6748 I- , fr.,c wv. i rimaterqualA, 19 ": Equal Op; ..,.unily 1Afiircat,1 4:, :n Em;over Mr. John E. Pro,wette, III, PLS SW611' 00;; - Shadow Creek October 18, : 011 The construction of any impe•vious surfaces, ether than a construction entrance under an app!oved S,�dimentation Ercsion Control Pla:i, is a violation (if NCGS 143-215.1 and is subject. to enforcement action pursuant to NCGS 143-215.6A. All revised original signed documents must be returned or new originals must be provided. Copies are not acceptable. Any revised calculations or plans must be sealed, signed, and dated; and have a revision date shown. Please reference the State assigned project number SW6111003 on all correspondence. If you have any questions concerning this matter please feel free to call me at (919) 807-6375, or at robert.patterson@ncderr.gov. Sincerely, zol Z9 Robert D. Patterson, PE Environmental Engineer Stormwater Permitting Unit cc: SW6111003 File ec: Jeff Wright - Pittman Grove Development Group, LLC Mike Lawyer- Fayetteville Regional Office ;'age 2 of 2