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HomeMy WebLinkAboutSW6120602_HISTORICAL FILE_20120924STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE DOC DATE YYYYMMDD Geotechnical, Environmental, and Materials Engineers September 24, 2012 US Army Corps of Engineers USACE -- SOCOM Resident Office Fort Bragg, North Carolina Attention: Mr. Daniel Bradley Re: Letter of Transmittal and Summary of Testing Soil Science Report for "Erosion Control and Site Drainage Calculations" SOTF Entrance Project Fort Bragg, North Carolina Building & earth Project No. RD12367 Ladies and Gentlemen: As requested and authorized by Mr. Daniel Bradley with the US Army Corps of Engineers, Building & Earth Sciences, LLP is pleased to present the results of the field testing and observations for the storm water basins at the proposed New SOTF Entrance off Lamont Road at Fort Bragg, North Carolina. Scope of Service The intent of our testing and field work was to observe and document the soil profile and the groundwater conditions that will affect and influence the drainage rate of the proposed storm water basins for the new entrance roadway to SOTF. At the time of our site work, the preliminary "Grading and Drainage Plan" had been provided by Mr. Bradley. We have included a copy of the provided plan for your reference. Our testing was performed at four (4) locations, as shown on the attached plan. Our locations are identified as 1, 2, 3 and 4. The controlling parameters for the design of infiltration basins is the depth to evidence of Seasonal High Water Table (SHWT), and the saturated (stabilized) permeability of the soils that should be expected in the floor and berms of the basin. Any restrictive horizons within the soil profile could substantially affect the drainage capacity of the basin, Mr. Mike Eaker, a North Carolina Licensed Soil Scientist with Southeastern Soil & Environmental Associates, Inc., under contract to Building & earth Sciences, has assisted with the field work and reporting for this work. Mr. Eaker's report details the procedures used in his field evaluation, the results of the soil observations, the depth to seasonal high groundwater and the depth to observed water at each test location. Mr. Faker's report is included with this report. The storm water basins for this project may be designed as either wet basins or infiltration basins, provided the guidelines of the current NC Division of water Quality are observed. As required by 610 Spring Branch Road Dunn, North Carolina 28334 Phone (910) 292-2085 Fax (910) 292-2192 Geotechnlcal, Environmental, and Materials Enylneers DWQ, if the ponds are designed as wet basins, the permanent pool elevation will need to be set within 6 inches of the SHWT elevation, and the permeability of the soils will need to be less than 0.01 inches per hour. Although it may be more applicable to set the permanent pool elevation at the existing (observed) groundwater elevation, there is no provision for this by DWQ. Because neither the SHWT, nor standing groundwater was encountered within 114 inches of the existing ground surface, it is our opinion that designing the basins as wet basins is not reasonable. In the event that the ponds are to be designed as infiltration basins, the floor of the basin will need to be set at an elevation that is 24 inches above the -SHWT, and the soils will need to have an available saturated drainage rate of at least 0.52 inches per hour. The results of our testing are summarized below. Location 1-1 1-2 1-3 1-4 Ground Elevation ft 325.5 316.7 315.6 310.8 Bottom of Basin ft 323.5 314.2 311.1 308.8 Depth to SHWT in 114 114 114 114 SHWT Elevation ft 316.0 307,2 306.1 301.3 Depth to Water in NE NE NE NE Water Elevation ft >316.0 >307.2 >306.1 >301.3 CHP Test De th (in 36 36 36 36 CCHP Test El. (ft) 322.5 313.7 312.6 307.8 Ksat (in/hour) >5.0 >5.0 4.3 2.4 • NE Not Encountered Summary of Observations and Recommendations Infiltration Basin: We understand that the basins are to be designed as infiltration basins. As such, the floor elevation of the basins will need to be set to an elevation that is 24 inches above the recorded SHWT. As currently identified, the soils that are expected at the floor elevation of the basins have a saturated permeability of at least 0.52 inches per hour. Statement of Design Method. Test Method and Limitations The flow of the near surface soils has been approximated using the concepts presented in Bernoulli's Equation for steady state flow and Darcy's Law for fluid flow through a porous media. Additionally, our Ksat values were calculated using the Glover solution which is dependant on the geometry of the bore hole, and the hydraulic head. To develop our recommendations, Building & Earth has measured/calculated the saturated flow rate (Ksat) for the soils at the site using accepted test methods and equipment. Ultimately, the drainage of the basins will be a function of the saturated flow rate of the soils, the surface area of the basin geometry, and the pressure differential (hydraulic head) induced by the storm water levels in the pond. In order to determine the appropriate Ksat for the soils in each basin, a small diameter bore hole was advanced to a pre -determined depth of interest. At this depth, a constant head (pressure) was SOTF Entrance Road Basins 2 R012388 Fort Bragg, North Carolina Georechnlcal, Enrironmenn4 and Materials Engineers established and maintained. Once our measurements approached a stabilized flow rate, our test was terminated. The recommendations in this report are limited by a number of geologic considerations. The primary limitation is the fact that geologic formations are variable in nature. The soils in Cumberland County are subject to perched water conditions, artesian conditions, and layers of undulating low permeability clay seams and layers. All of these geologic conditions have an affect on the steady state flow of groundwater. To the extent possible we have identified the material types that will impact the flow of groundwater, and have provided our professional opinion regarding the depth (elevation) to evidence of SHWT. Although Bldg & Earth has not provided an exhaustive survey of all of the soil deposits at the site, it is our opinion that we have properly and adequately characterized the site with regard to flow from the storm water basins that are planned for this development. Closing If you need further information, or if we can provide additional service, please do not hesitate to contact us. Respectfully Submitted, Building & Earth Sciences, LLP Kurt A. Miller, P.E. Senior Geotechnical Engineer Attachments: Soil Scientist Report for Soil Profile and SHWT Compact Constant Head Permeability Testing Results SOTF Entrance Road Basins 3 RD12388 Fort Bragg, North Carolina Southeastern Soil & Environmental Associates, Inc. P.O. Box 9321 Fayetteville, NC 28311 Phone/Fax (910) 822-4540 Email mike Osoutheastemsoll.com September 21, 2012 Mr. Kurt Miller, PE Building and Earth Sciences, LLP 610 Spring Branch Road Dunn, NC 28334 Re: Seasonal high water table (SH WT) evaluation for potential stormwater retention areas, SOTF Access Control Point, McKellars Road, Fort Bragg, North Carolina Dear Mr. Miller, An evaluation of soil properties on a portion of the aforementioned property has been conducted at your request. The purpose of the investigation was to determine soil water table depths for use in stormwater retention design. Soils at the test site are most similar to the Lakeland (boring 1) and Wagram soil series (borings 2, 3 & 4; see attached boring logs). Four borings were advanced to a depth of 9.5 feet. Seasonal High Water Table (SHWT) as determined by evidence of colors of chroma 2 or less exceeded 9.5 feet below the ground surface in all borings. The attached map shows the approximate location of the sample points (as requested by the design engineer). l trust this is the information you require at this time. Sincerely, Mike Eaker President 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 Log (1), SOTF Access Control Point, McKellars Road, Fort Bragg, North Carolina This map unit consists of excessively drained soils that formed in sandy deposits on uplands. Slope ranged from 0 to 2 percent. C I - 0 to 12 inches; red (2.5YR 4/8) sandy loam; weak granular structure; very friable; gradual wavy boundary. C2 - 12 to 40 inches; red (2.5YR 4/8) sand; single grained; very friable; gradual wavy boundary. C3 - 40 to 55 inches; red (2.5YR 4/8) sandy loam; about 5 percent uncoated sand grains; weak granular structure; very friable; clear smooth boundary. C4 - 55 to 75 inches; red (2.5YR 4/6) loamy sand; weak granular structure; very friable; clear smooth boundary. CS - 75 to 93 inches; yellowish brown (IOYR 5/4) loamy sand; weak granular structure; very friable; gradual wavy boundary. C6 -- 93 to 114 inches; strong brown (7.5YR 5/6) sandy loam; weak granular structure; very friable. SHWT greater than 114 inches SOIL/SITE 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 28311 Phone/Fax (910) 822-4540 Email mike® southeastemsoil.com Typical Soil Boring Log (2, 3 & 4), SOTF Access Control Point, McKellars Road, Fort Bragg, North Carolina This map unit consists of well drained soils that formed in loamy sediment on uplands. Slope ranged from 0 to 2 percent. A - 0 to 6 inches; black (1 OYR 2/2) loamy sand; single grained; loose; very friable; common fine and medium roots; abrupt smooth boundary. E - 6 to 25 inches; yellowish brown (I OYR 5/6) loamy sand; single grained; loose; very friable; few fine and medium roots; clear smooth boundary. Bt - 25 to 50 inches; yellowish red (5YR 4/6) sandy clay loam; weak fine and medium subanbular blocky structure; friable; gradual wavy boundary. BC - 50 to 57 inches; yellowish red (5YR 5/8) loamy sand; about 10 percent clean sand; loose; very friable; clear smooth boundary. C1 - 57 to 70 inches; yellowish red (5YR 4/6) sandy loam; weak granular structure; very friable; gradual wavy boundary. C2 — 70 to 114 inches; yellowish red (5YR 4/6) sandy clay loam; massive structure; friable. S11WT greater than 114 inches SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING GROUNDWATER DRAINAGEIMOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN _iIll TBM #1 510461.03 1975890.70 293.48 A TBM #2 510191.21 1976003.16 309.90 h TBM #3 508947.06 1976384.55 348.42 A TBM #4 508630.10 1976539.17 358.19 A I y 1 ' / i¢; \`I HORIZONTAL DATUM. NORTH CAROLINA STATE PLANE CC VERTICAL DATUM: NAVD 88 Nf IIIII-/ / I J III // '+ `� I \ ! 1 ly llll�l/%f / II ! I i f ICI `ice"f� •P,' / y �1 � �\ \ � � _ t4 509,892.59 E ,9ZgJ21.76 1 i `4 _N 510.032.9 !r 1 (• � � =rc_ - `�w �___�-•.-_�z;-='-'_ "_=�'=_-mow "•r4- __--==_'-�_-z`�----�^��__1�` �.�� �.Z.. _ `" -- "_' _---• ' 1 L_ 1-_�L�., :.�-_� �� �- - _- ��_ ----N ------- -------1---------��----------------- 1 JJ i - -- - -�=-s'r== ---` - ---7- �--�-r-� _•_�:--_-���--�a.� --'fir---'----Y- ---- ` ---"-__� _'--_---'--- , ♦ /)�/.-ice: '/ / // f' 76,524.04 N 509. 76.25 1 1 @ 15 1,976, 24.82- y 74 C.C"S Cb-j 7-r!G L ZocA-r,au1 - Lf TEST LOCATION POINTS Genrcchnical. Environmental, and Materials Engineers Project Name: SOTF New Access Roac Project Number: 12-388 Client Name: USACF Report Number: I Technician: Q. Carlson [late: 9/18/2012 Tes7 Cottstrutts Liquid Used: tap kvater "Pest Location: 1-1 Depth of WalerTable: >120" 1 Water Temp ( °F): Constants: Ca acity Lic uid Containers settin Rate Cm'/cm Sight Tube 11, 1 On 20.000 Storage Tube 51- 2 On 105.000 Data o1' 4 Total Negative Constant Hcad Flow rate used: 105 Hole Diameter: Slar't Saturation: 9:45 Walcr Head: Hole Radius: 1,200 Hole Depth: 70 OF NA inches 2A inches 4.25 inches 36 inches F- Date Time Flapsed Time (hrs) A 'Total 1710%v Readings How Rate in'/hr 'Saturated Conductivity Remarks: Weather conditions, etc. Rcadin g. Tube 1 1m Flow cm' Kam, inlhr 1 S 9/18 9 :46 0.02 0.02 43.3 105 892.5 3267.82 35.16 I 9/18 947 34.8 2 S 9/18 9 :47 0.02 0,03 34.8 105 882 3229.38 34.74 E 9/ 18 9 : 48 26.4 3 S 9/18 9 :48 0.02 0.05 26.4 105 840 3075.60 33.09 E 9/18 9 : 49 18.4 4 S 9/18 9 :49 0.02 0.07 18.4 105 840 3075.60 33,09 l 9/18 9:50 10.4 5 S 9/18 9 : 50 0.02 0.08 10.4 103 840 3075.60 33.09 G 9/19 9:51 2.4 6 S 7 S. G 8 S L'• 9 S F l0 S 11 la 12 S 1? 13 S E: 14 S E: 15 S E Stabilized K..,,in/h, >5 CCUIP-1 Geotechnical, Environmental, and Materials Engineers Project Name: SOTF New Access Roac Client Name: USACE 'Technician: B. Carlson Project Dumber: Report Number: [date: 12-3 8 8 2 of 4 9/18/2012 Test Constrrrllc Liquid Used: tap water Depth ol' Watcr'1'able: > 120" Water Temp ( "{'): 70 OF Test Location: 1-2 'total Negative Constant Head: NA inches Coitstarrtc: Capacity Liquid Containers,. settin T Rate cni'/cm Sight Tube I loll 20.000 Storage Tube 51, 2 On 105.000 ]'low rate used: 105 1 lolc Diameter: 2.4 Inches Start Saturation: 9:20 Water Head; 4 inches Hole Radius: 1.200 ]-Tole Depth: 36 inches Test Data �c Lt Date Time I lapsed Time (hrs),, A 'Total : 1.1 Nv Readings Flow Rate in'/hr Saturate CondtletiV' t Remarks: Weather conditions, etc. ReadingFlow " tube Flow- cm' Kam, inlhr I S 9/18 9:21 0.02 0.02 45.0 105 892.5 3267.82 38.21 171 9/18 1 9:22 30.5 2 y S1 9/18 1 9 :22 0.02 0,03 36.5 105 735 2691.15 31,47 1- 1 9/18 1 9:23 29.5 3 S1 9/18 9 :23 0.02 0.05 29.5 105 735 2691.15 31.47 1- 1 9/19 9:24 22.5 4 S 9/18 9 :24 0.02 0.07 22.5 105 630 2306.70 26,97 1; 1 9/18 9:25 16.5 5 S1 9/18 9 :25 0.02 0.08 16.5 105 630 2306.70 26.97 I 9/18 9:26 10.5 6 S1 9/18 9 : 26 0.02 0.10 10.5 105 630 2306.70 26.97 1: 9/18 1 9:27 4.5 7 S 1-1 1 E xs t� 9s i 1 {l S I 11 S I: 12 S I- ,, S 1; 14 S I: 15 1-, Stabilized KSdt'n/hr >5 CCHP-2 Gaote[hnlGal. Fnvironmancal, and Materials Engineers Project Name: SOTF New Access Roae Client Name: USAGE Technician: B. Carlson Project Number Report Number: Date: 12-3 88 3 of 4 9/19/2012 Test Constants Liquid Used: tap Nvatcr Dcpth of Water Table: > 120" Water "Temp ("F): 70 OF 'Test Location: 1-3 Total Negative Constant Head: NA inches Constants: Capacity Li uid Containers setting. Rate cm'/cm Si ght 'I'uhe IL I it 20.000 Storage "Tube 51, 2 On 105.000 Flow rate used: 105 Hole Diameter: 2.4 inches Start Saturation: 10:04 Water I -lead: 8.25 inclies Hole Radius: 1.200 Hole Depth: 36 inches Tew Data [- Date "Time Elapsed Time (hrs) A I "Total How Rea din s Flow Rate in'/hr Saturate Conductivity Remarks: Weather conditions, etc. Readin ']TubC flow, Flaw cm, K�, inlhr S 9/18 10 :05 0.02 0.02 41•7 105 336 1 1230.24 5.07 Ii 1 9/18 10:06 38.0 2 S1 9/18 1 10 :06 0.02 0,03 38.0 105 294 1076.46 4.44 17 9/18 1lO : 07 35.2 3 S1 9/18 1 10 :07 0.02 0.05 35.2 105 294 1076.46 4.44 Ell 9/18 1 10:08 32.4 4 S1 9/18 1 10 :08 0.02 0.07 32.4 105 283.5 1038.01 4.28 1v 9/18 1 to : 09 29.7 5 S 9/18 10 :09 0.02 0.09 29.7 105 283.5 1039.01 4,28 17 1 9/18 10 ; 10 27.0 S1 9/18 1 10 : 10 0.02 0.10 27.0 105 283.5 103 8.0 1 4.28 L 9/18 1] 0 : 1 l 24.3 7 S 9/18 to : 110.02 0.12 24.3 105 283.5 1038.01 4.28 I 9/18 10 : 12 21.6 8 S I: 9 S I: 10 S I: II S 1? 12 S E; 13 S I� 14 S E IS ti la Stabilized K.11nlhr 4.3 CCHP-3 Geotechnical, Environmental, and Materla9s Engineers Project Name: SOTF New Access Roac Client Name: U S A C EH Technician: B. Carlson Project Number Report Number: Date: 12-388 4 of 4 9/ 18/2012 Test Cunshults Liquid Used: tap water Depth of Water fable: >120" Water Temp (' ): 70 OF Test Location: 1-4 Total Negative Constant I -lead: NA inches Constants: Capacity Lic uid Containers setting Efate cm'/em Sight 17ubc l L 1 On 20.000 Storage "tube 51, 2 On 105-000 Plow rate used: 105 Hole Diamcleri 2.4 inches Start Saturation: 10:35 Water Hcad: 10.5 inclics Hole Radius: 1.200 ! lolc Dcptlt: 36 inches Tec1 Data E- Date Time Elapsed Time (hrs) A Total, Fs low Reading's Flcn%, Rate in'/hr Saturated CondlletiN' Remarks: ]Feather conditkms. etc. Reading,. Tube Flow I'Iow cln, K�„ in/hr l S 9/18 10 :36 0.02 0.02 39.0 105 399 1460.91 4.16 1 T18 10:37 35.2 2 S1 9/18 1 i 0 : 37 0.02 0.03 35.2 105 315 1153.35 3.29 G 1 9/18 1 10:39 32.2 3 S1 9/18 10 :38 0.02 1 0.05 32.2 105 262.5 961.12 2.74 I: 9/18 10:39 29.7 4 S1 9/18 10 :39 0.02 0.07 29.7 105 231 845.79 2.41 L' 1 9/18 10:40 27.5 5 S 9/18 10 : 40 0.02 0.08 27.5 IN 231 845.79 2,41 IS 1 9/18 1 10 : 41 25.3 6 S1 9/18 1 10:41 0.02 0.10 25.3 105 231 845.79 2.41 1 9/18 10:42 23.1 7 S1 9/19 10 ; 42 0.02 0.12 23.1 105 231 845.79 2,41 L 9/18 1] 0 : 43 20.9 8 S I� 9 S Ii 10 5 I1 S 121 S E 13 S 1? la S I 15 ti I? Stabilized K,,,tin/h,. 2.4 CCHP-4 Lock, Jared Subject: FW: Ft Bragg SOF ACP Permit From: Morgan, Martha [mailto:martha.morgan@ncdenr.gov] Sent: Tuesday, August 14, 2012 12:17 PM To: Lock, Jared Subject: RE: Ft Bragg SOF ACP Permit Hey there, I just heard back from Jason Adcock at Ft. Bragg DPW that there are no environmental issues is this location that would cause any concern for use of the infiltration basins. Thanks for checking with us. Marti Morgan N001 Mason&Hanger A Day&Zimmermanm Company October 2nd, 2012 Robert Q Patterson Environmental Engineer Stormwater Permitting Unit Wetlands and Stormwater Branch 512 N. Salisbury St. Raleigh, NC 27604 Re: Stormwater Project No. SW6120602 Ft Bragg SOF Access Control Point greatly appreciate you taking the time to review our plans. Enclosed you should find the updated plan sheets, the infiltration test report, updated sheet from SWU-101 showing the total site information, updated supplemental information sheets on the basins and the updated calculations for the basins/storage. The following is a quick summary of the revisions to address your comments dated August 22nd, 2012. 1. Please refer to the calculation sheets in this submittal for the updated stage -storage tables, treatment volume calculation using the simple method and the basin draw down calculations. 2. Please refer to the calculation sheets in this submittal for the requested table showing the BUA information for each drainage area. 3. Please refer to the report included in this submittal providing the CCHP test information and Ksat for each infiltration basin location. 4. Please refer to the calculation sheets in this submittal for the treatment volume calculations. Basins are sized to store slightly over 250% of the required quantity to waive the offline bypass and VFS requirements. 5. Have revised SWU-101 to show the project totals. Please refer to the calculation sheets provided in this submittal for the individual drainage area BUA information. 6. Have updated the basin designs based upon the Infiltration results and the 2.5 factor applied to the required volume. Supplement and plans have been coordinated. 7. Have coordinated all the supplement and plan information. Thank You, Jared Lock Civil Engineer Mason & Hanger OCT -- 3 2012 The Mason & Hanger Group Inc. 300 West Vine Street, Suite 1300 Lexington, KY 40507 t 859.252.9980 f 859.253.0781 masonandhanger.com Mason & Hanger, Inc. 7270 West 162nd Street Overland Park, KS 66085 t 913.681.2323 f 913.681,3970 G;A NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director August 22, 2012 Mr. Jared Lock Mason & Hanger 300 W. Vine St., Ste. 1300 Lexington, KY 40507-1814 Subject: Request for Additional Information Stormwater Project No. SW6120602 SOP Access Control Point Cumberland County Dear Mr. Lock: Dee Freeman Secretary The Division of Water Quality Central Office received a Stormwater Management Permit Application for the subject project on June 12, 2012; with additional information received August 17, 2012. A preliminary review of that information has determined that the application is still not complete. The following information is needed to continue the stormwater review: As previously requested, some calculations were still not submitted that support the information in the supplement forms. This includes the treatment volume calculation using the simple method and draw down calculation. The provided calculations show the stage -storage tables, Swale talcs., and spillway talcs.; but not the above needed calculations. The minimum required volumes shown on the supplement forms appear slightly less than should be. Please remember to seal, sign, and date all calculations. 2. As previously requested, please provide in table form, for each DA, a breakdown of existing BUA to remain, existing BUA removed, proposed added BUA, and proposed total BUA at completion. Then, also provide those same values for the project as a whole. You must show that at least the net increase in BUA is being captured and treated for the project as a whole. As previously requested, an infiltration test (and SHWT determination) must be performed within the footprint of each proposed infiltration basin, at the proposed bottom elevation. Only one of the four basins (basin 4) appears to have this, and the resulting rate (0.13 in/hr) is below the minimum required rate of 0.52 in/hr. The infiltration test should be done with a double ring infiltrometer, amoozemeter, or other similar widely accepted method for determining stormwater infiltration rates. Septic pert tests are not usually accurate enough. In your additional information response, you stated that this is because you accounted for a lower infiltration rate as a factor of safety. Using a safety factor is fine, but we must have actual infiltration rates. 4. As previously requested, an offline bypass and properly designed vegetated filter strip (VFS) are not provided for the infiltration basins, but are required. The VFS and bypass requirements for infiltration devices may both be waived by increasing the size of the infiltration device by 2.5 or by Wetlands and stormwater Branch One 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 North Carolina Phone: 91 M07-63001 FAX: 919-807-6494 Naturally Internet: www,ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer Mr. Jared Lock SW6120602 - SOF Access Control Point August 22, 2012 infiltrating the 10-yr, 24-hr storm event. Piease see 16.3.9 in the BMP Manual for specific sizing requirements. none of these options have been provided. The note provided on the plans that attempted to address this is notsufficient. If you choose to install a level spreader and vegetated Filter strip CLS & VFS), instead of waiving them with the other options, then the LS and VFS must be Fully designed, detailed, and shown on the plans. There is also a supplement form needed for each LS and VFS proposed. Please see Chapter 8 of the BMP Manual for LS and VFS design requirements. 5. The DA and impervious area values for infiltration basin 1 is not consistently shown on SWU-101 and the supplement form. Please revise. 6. For infiltration basin 2: the supplement states the storage elevation is at 317.50', but the plans show the overflow only at 316.S0'. Based on the stage -storage tables provided, this overflow elevation would not provide even the minimum required treatment volume. Please revise as needed. 7. For infiltration basin 4: based on the plans, the basin bottom elevation is not shown correctly on the supplement form. Please revise. 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 September 5, 2012, or the application will be returned as incomplete. Per Division policies, the project will be returned as incomplete if all items are not adequately addressed from this second and final request for additional information. The retu rn 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. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 1.43-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Any revised calculations or plans must be sealed, signed, and dated. Please reference the State assigned project number SW6120602 on all correspondence. If you have any questions concerning this matter please feel Free to call me at (91.9) 807-637S, or at robert.patterson@ncdenr.gov. cc: SW6120602 File ec: Don Higgins, PE - Mason & Hanger Lee Ward - Fort Bragg DPW-WMB David Heins - Fort Bragg DPW Mike Lawyer - Fayetteville Regional Office Sincerely, Robert D. Patterson, PE Environmental Engineer Stormwater Permitting Unit Page 2 of 2 1-9; WA NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director August 22, 2012 Mr. Jared Lock Mason & Hanger 300 W. Vine St., Ste. 1300 Lexington, KY 40507-1814 Subject: Request for Additional Information Stormwater Project No. SW612O6O2 SO Access Control Point Cumberland County Dear Mr. Lock: Dee Freeman Secretary The Division of Water Quality Central Office received a Stormwater Management Permit Application for the subject project on June 12, 2012; with additional information received August 17, 2012. A preliminary review of that information has determined that the application is still not complete. The following information is needed to continue the stormwater review: As previously requested, some calculations were still not submitted that support the information in the supplement forms. This includes the treatment volume calculation using the simple method and draw down calculation. The provided calculations show the stage -storage tables, swale talcs., and spillway talcs.; but not the above needed calculations. The minimum required volumes shown on the supplement forms appear slightly less than should be. Please remember to seal, sign, and date all calculations. 2. As previously requested, please provide in table form, for each DA, a breakdown of existing BUA to remain, existing BUA removed, proposed added BUA, and proposed total BUA at completion. Then, also provide those same values for the project as a whole. You must show that at least the net increase in BUA is being captured and treated for the project as a whole. 3. As previously requested, an infiltration test (and SHWT determination) must be performed within the footprint of each proposed infiltration basin, at the proposed bottom elevation. Only one of the four basins (basin 4) appears to have this, and the resulting rate (0.13 irl is below the minimum required rate of 0.52'in/hr. The infiltration test should be done with a double ring infiltrometer, amoozemeter, or other similar widely accepted method for determining stormwater infiltration rates. Septic pert tests are not usually accurate enough. In your additional information response, you stated that this is because you accounted for a lower infiltration rate as a factor of safety. Using a safety factor is fine, but we must have actual infiltration rates. 4. As previously requested, an offline bypass and properly designed vegetated filter strip (VFS) are not provided for the infiltration basins, but are required. The VFS and bypass requirements for infiltration devices may both be waived by increasing the size of the infiltration device by 2.5 or by Wetlands and Stormwater Branch 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, Norlh Carolina 27604 Phone: 919-807-63001 FAX: 919.807-6494 Internet: www.ncwaterquality.org An Equal Opportunity 1 Attirmalive Action Employer NorthCarolina Natimallrf Mr. Jared Lock SW6120602 — SOF Access Control Point August 22, 2012 infiltrating the 10-yr, 24-hr storm event. Please see 16.3.9 in.the BMP Manual for specific sizing requirements. None of these options have been provided. The note provided on the plans that attempted to address this is not sufficient. If you choose to install a level spreader and vegetated filter strip (LS & VFS), instead of waiving them with the other options, then the LS and VFS must be fully designed, detailed, and shown on the plans. There is also a supplement form needed for each LS and VFS proposed. Please see Chapter 8 of the BMP Manual for LS and VFS design requirements. 5. The DA and impervious area values for infiltration basin 1 is not consistently shown on SWU-101 and the supplement form. Please revise. 6. For infiltration basin 2: the supplement states the storage elevation is at 317.50', but the plans show the overflow only at 316.50'. Based on the stage -storage tables provided, this overflow elevation would not provide even the minimum required treatment volume. Please revise as needed. 7. For infiltration basin 4: based on the plans, the basin bottom elevation is not shown correctly on the supplement form. Please revise. 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 September 5, 2012, or the application will be returned as incomplete. Per Division policies, the project will be returned as incomplete if all items are not adequately addressed from this second and final request for additional information. 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. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Any revised calculations or plans must be sealed, signed, and dated.. Please reference the State assigned project number SW6120602 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@ncdenr.gov. cc: cSW6120602 File ec: Don Higgins, PE - Mason & Hanger Lee Ward - Fort Bragg DPW-WMB David Heins - Fort Bragg DPW Mike Lawyer - Fayetteville Regional Office Sincerely, Robert D. Patterson, PE Environmental Engineer Stormwater Permitting Unit Page 2 of 2 `% Mason&Hanger A Day&Zmmermann Company August 13, 2012 Robert D Patterson Environmental Engineer Stormwater Permitting Unit Wetlands and Stormwater Branch 512 N. Salisbury St. Raleigh, NC 27604 Re: Stormwater Project No. SW6120602 Ft Bragg SOF Access Control Point I greatly appreciate you taking the time to review our plans. The following is a quick summary of the revisions to address your comments dated June 141h. 1. Please refer to General Note 4 on sheet CG700 for a note stating that there are no wetlands on the site. 2. Please refer inside the front cover of the original submittal binder for the supplemental forms and supporting calculations, have included forms in this submittal as well. Basin Storage calculation can be found in the Stormwater Calculation portion of the drainage report in the original submittal. 3. Have updated and included the requested information on the SW U-101 pages. 4. Additional information on BUA has been included on the revised SWU-101 page. 5. Please refer to the supporting calculations on the supplemental forms for drawdown times for each basin. 6. Have added information for Basin 3 spillway. 7. The Geotechnical information was provided by the Savannah Corps of Engineers prior to final grading/layout with no chance to update their locations. Infiltration tests are located near but not in all basins. The low infiltration rate on Basin 4 was taken into account during design to ensure complete drawdown in less than 5 days as required. 8. There was no evidence of the SHWT on the borings so we treated the bottom of the boring as the SHWT elevation and the bottom of each basin had over 2' of separation. 9. Have added the VFS notation to Basins 2 and 3, Basins 1 and 4 require the Rip Rap as the erosion control due to the steep slope of the spillway. All basin overflows are designed to handle all runoff beyond the detained volume. 10. Have labeled the basins on the enlarged sheets. 11. Have adjusted the side slopes of Basin 1 to 3:1. 12. Have received verification from Marti Morgan that there are no issues utilizing infiltration basins at this site. hank Y Lj, a ed Lo Civil Engineer Mason & Hanger AUG z 7 2012 bt; NR . �A The Mason & Hanger Group Inc. 300 West Vine Street, Suite 1300 Lexington, KY 40507 t 859.252.9980 f 859.253.0781 masonandhanger, corn Mason & Hanger, Inc. 7270 West 162nd Street Overland Park, KS 66085 1913.681.2323 f 913,681,3970 Higgins, Don From: Lock, Jared Sent: Thursday, August 16, 2012 12:28 PM To: Higgins, Don Subject: Ft Bragg Permit Submittal Attachments: Ft Bragg Storm Review Summary.pdf; CG111.pdf; CG110.pdf; CG112.pdf Don c4ai` Se Code = iv!!V• a���lD.a 1a54�. �ZQ 1 Attached you should find the pdfs to print 2 copies of and send. Please print the 3 drawings full size and sign. Please overn�� iighWaffixtto the following address F"A Ex Robert Patterson Wetlands and Stormwater Branch 1617 Mail Service Center Raleigh, North Carolina 27699-161.7 The NCDENR job number is SW6120602 if they let you put a job number or reference number on transmittal/label. Thank You Jared bock, P.E. Civil Engineer Mason & Hanger A Day & Zimmermann Company 300 West Vine Street, Suite 1300 Lexington, Kentucky 40507-1814 ph 859.280.3567 fax 859.253.0781 www.masonandhanger.com AUG I EOU Df;NR - A7q�17 Y ids cL,....._. I� Mason&Hanger A Day&Zimmm nn Company August 13, 2012 Robert D Patterson Environmental Engineer Stormwater Permitting Unit Wetlands and Stormwater Branch 512 N. Salisbury St. Raleigh, NC 27604 Re: Stormwater Project No. SW6120602 Ft Bragg SOF Access Control Point I greatly appreciate you taking the time to review our plans. The following is a quick summary of the revisions to address your comments dated June 141h. 1. Please refer to General Note 4 on sheet CG700 for a note stating that there are no wetlands on the site. Govr�RMr11> „ altll NO`r' -7*0 1- 01 OCZ0C. S4QHf71?4'( _'B-.)P4 2. Please.refer inside the front cover of the original submittal binder Or the supplemental fo stand supporting calculations, have included forms in this submdta as well -basin Storage calculation can be found in the Stormwater Calculation portion of the drainage report in the original submittal. 3. Have updated and included the requested information on the SW U-101 pages. 4. Additional information on BUA has been included on the revised SWU-101 page. 5. Please refer to the supporting calculations on the supplemental forms for drawdown times for each basin. 6. Have added information for Basin 3 spillway. 7. The Geotechnical information was provided by the Savannah Corps of Engineers prior to final grading/layout with no chance to update their locations. Infiltration tests are located near but not in all basins. The low infiltration rate on Basin 4 was taken into account during design to ensure complete drawdown in less than 5 days as required. 8. There was no evidence of the SHWT on the borings so we treated the bottom of the boring as the SHWT elevation and the bottom of each basin had over 2' of separation. 9. Have added the VFS notation to Basins 2 and 3, Basins 1 and 4 require the Rip Rap as the erosion control due to the steep slope of the spillway. All basin overflows are designed to handle all runoff beyond the detained volume. 10. Have labeled the basins on the enlarged sheets. 11. Have adjusted the side slopes of Basin 1 to 3:1. 12. Have received verification from Marti Morgan that there are no issues utilizing infiltration basins at this site. T nk You, ared�L�,�y-' Civil Engineer Mason & Hanger The Mason & Hanger Group Inc. 300 West Vine Street, Suite 1300 Lexington, KY 40507 t 859,252,9980 f 859.253.0781 masonandhanger.com Mason & Hanger, Inc. 7270 West 162nd Street Overland Park, KS 66085 t 913.681,2323 f 913.681.3970 Spillway Design I I j Ft Bragg Rip Rap Spillway JDL - 8/9/2012 Area 0 B Z Slope Depth,,„m A P R T Ave Depth Mannings n dso ()assumed Vx Basin 1 0.90 2 3 0.07 0.160 0.3968 3.01192885 0.13174282 2.96 0.134 0.0445921 0.3 0.908240119 0.600533 Basin 2 1.04 5 3 0.33 0.130 0.7007 5.82219219 0.12034986 5.78 0.121 0.0960461 0.3 1.522157002 1.175321 Basin 4 3.40 5 3 0.33 0.145 0.788075 5.91706052 0.13318691 5.87 0.134 0.0442456 0.3 3.97601739 1.241278 Spillway flow depth is less than 2 inches and velocities are below 1.25 fps for 10 yr storm NCDQT Class A rip rap is being utilized for erosion control due to slopes ranging from 7%-33% Area Q B Z Slope Depthasum A P R T Mannings n ()assumed Vx Basin 3 1.44 5 3 0.02 0.25 1.4375 6.58113883 0.21842724 6.5 0.07 1.5694553 1.092 The low velocity at the spillway does not require an erosion control mat. I 1_ 1 1 1_ 1 1 yr 13.07 in 1 1 1 1 1 Pre -Development I 1 I Name 1 Area I C 1 Runoff (cf)1 1 1 11 862571 0.421 9274.3531 1 1 21 516881 0.441 5822.1361 1 1 1 1 15096.491 1 1 1 1 1 Post -Development 1 1 I I Name I Area IC IRunoff I I I 1 6095 _ 0.671 1045.4141 1 I 2 11351 0.221 63.92321 1 1 3 93931 0.291 697.33631 1 1 4l i 489 f 0.63 1240.14591 1 1 51 39529 0.591 5970,461 1 1 61 170231 0.491 2135.3651 1 I - 71 85981 0.71 I 1562.7721 1 1 - 8I 126491 0.491 1586.6911 1 1 91 84141 0.561 1206.2311 1 1 101 206571 0.481 2538.3321 1 1 111 129631 0.551 1825.191 1 1 1 1 1 18871.861 1 1 1 1 1 1 1 1 I I I 1 1 I I I I I i additional generated 3775.3731 hold 59751_ 1_ _basins total reduction 2200Iwhich _ is approx 14.5% reduction Lock, Jared Subject: FW: Ft Bragg SOF ACP Permit From: Morgan, Martha[mailto:martha.morgan(&ncdenr.gov] Sent: Tuesday, August 14, 2012 12:17 PM To: Lock, Jared Subject: RE: Ft Bragg SOF ACP Permit Hey there, I just heard back from Jason Adcock at Ft. Bragg DPW that there are no environmental issues is this location that would cause any concern for use of the infiltration basins. Thanks for checking with us. Marti Morgan 859.253.0781 » 9198076494 P 2/2 Mason&Hanger � T)J�Flrrn,!lrrmra++r S.;an rnrnr July 13, 2012 Robert D, Patterson, PE Wetlands and Stormwater Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Re: Request for additional time Stormwater Project No. SW61206OZ Dear Mr, Patterson; We received the request for additional information on Stormwater Project No. SW6120602 and are working to gather the required information but request additional time to get the data submitted back to you. We expect to have all requested information submitted to you by:Adgust 20' 2DIf Thank you for all your assistance as we attempt to attain this permit. Very truly yours, MASON & HANGER Jared Lock, PE Civil Engineer Mason & Hanger The Mason & Hanger Group Inc, 300 West One Street, Suite 1300 Lexington, KY 40507 t 859.252,9980 f 859.253.0781 masonandhanger.com Mason & Hanger, Inc. 7270 West 162nd Streal Overland Park, KS 66085 t 913,681.2323 f 913,681.3970 2012-07-13 08:34 mi 1 Mason&Hanger .f Dxf ��Prri+ln.m,anr Cnrnynrr 781 » 9198076494 P 1/2 300 West vine Street Suite 1300 Lexington, ICY 40507-1 B14 t 859.252,9980 f 859.253,0781 masonandhanger.com FAX COVER SHEET TO Robert —__-_-_Robert DPattern ........................------ -- on FROM: Jared Lock COMPANY: Wetlands and Stormwater Branch ;REFERENCE NUMBER: SW612p602 FAX NUMBER: 919-807-64g.4-,..,..,,..�..-_..___...._._-__.-_.�..___......_,__...__..--------------------- -----------------------..,.,.-._.._-.� TELEPHONE NUMBER: 919-807-.6300 DATE: July PAGES: tj Page 1 of 1 1110 NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Mr. Jared Lock Mason & Hanger 300 W. Vine St., Ste. 1300 Lexington, KY 40507-1814 Dear Mr. Lock: Director June 14, 2012 Subject: Request for Additional Information Stormwater Project No. SW6120602 SOF Access Control Point Cumberland County DPP Freeman. 'Secreiary The Division of Water Quality Central Office received a Stormwater Management Permit Application for the subject project on June 12, 2012. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 11. Please delineate any wetlands in and around the project; or provide a note on the plans that none exist. The note that states (7-2)A completed infiltration basin supplement formmust be completed for each of the 4 proposed infiltration basins. None were submitted even though V1.3. was initialed. In addition, calculations must be submitted that support the information in the supplement forms. This includes the treatment volume calculation using the simple method, draw down calculation, etc. ✓3. Please address the following items on SWU-101: a. Items 1.3. and IV.1. were left blank. b. Item 11.2. specified that the project was low density, but this is a high density project. Please correct it. c. The table in IV.10. was left mostly blank. One drainage area (DA) must be completed for each of the infiltration basins. A) Please provide, for each DA, a breakdown of existing BUA to remain, existing BUA removed, proposed added BUA, and proposed total BUA at completion. Then, also provide those same values for the project as a whole. You must show that at least the net increase in BUA is being captured and treated. 0 Please show that each infiltration basin with drawdown within 5 days. A The overflow spillway calculation for basin 3 is not included in the calculations table. Please provide. Wetlands and Stownwater Branch 1517 Mai! Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919-807-6494 Internet: www,ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer None rthCarolina Naturally Mr. Jared Lock SW6120602 - SOF Access Control Point June 14, 2012 ( ' An infiltration test must be performed within the footprint of each proposed infiltration basin, at the proposed bottom elevation. Only one of the four basins (basin 4) appears to have this, and the resulting rate (0.13 in/hr) is below the minimum required rate of 0.52 in/hr. The infiltration test should be done with a double ring infiitrometer, amoozemeter, or other siniiiar widely accepted method for determining stormwater infiltration rates. Septic perc tests are not usually accurate enough. ✓8. The submitted geotech report submitted does not include a specific SHWT elevation determination based on mottling of the soil. This must be done within the footprint of each proposed infiltration basin. The information included only talks about apparent water table at the time the borings were performed. There must be a minimum of 2' separation bet— een the hottom of the basin and the SHWT. An offline bypass and properly designed vegetated filter strip (VFS) are not provided for the infiltration basins, but are required. The VFS and bypass requirements for infiltration devices may both be waived by increasing the size of the infiltration device by 2.5 or by infiltrating the 10-yr, 24-hr storm event. Please see 16.3.9 in the BMP Manual for specific sizing requirements. ✓10. Please label the infiltration basins on the plan view of sheets CG100 - CG112. ✓11. The side slopes shown on the plan view for basin 1 are 2:1, which is too steep. These must be no steeper than 3:1. Please also label the side slopes on the basin 1 section, as done for the other 3. /12. For projects with infiltration proposed at Fort Bragg, please provide written verification from Marti Morgan, at the Division of Waste Management (DWM), that there are not any issues with this project in relation to any DWM regulated sites or features. You can contact Mrs. Morgan via email or phone at martha.morgan-@ncdenr.gov or 919-508-8447. 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 July 14, 2012, 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. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of 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. Please reference the State assigned project number SW6120602 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@ncdenr.gov. Page 2 of 3 �►_ wo . Jared Lock SW6120602 - SOF Access Conrrol Pnint June 14, 2012 cc: SW6120602 File ec: Don Higgins, PE - Mason & Hanger Lee Ward - Fort Bragg DPW-WMB David Heins - Fort Bragg DPW Mike Lawyer- Fayetteville Regional Office Sincerely, Robert D. Patterson. PE Environmental Engineer Stormwater Permitting Unit Page 3 of 3 Rc-fupa't) 40 Application Corr+pleteness Review 7 First Submittal ❑ Re -submittal DevelopmentlProject Name: SQJ Receiving stream name IV 191te- River Basin: CA Pg T-9Ar. Date Received: ¢ rL Date Reviewed: L3 iz By Bill Diuguid — s Classification: For post -construction requirements, a program will be deemed compliant for the areas where it is implementing any of the fol!ow!ng programs. WS-I Vnrc-II, ln.►S-!!!, 1Ais-IV, HQ1nr 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): N1A Latitude and Longitude: 3-6- 109 00 t/ - 79 t0 J - tfS W jurisdiction. FT. B AA-CrG/cmM� Project Address: ZN-r fxsrcT16#-J _oF LRrne,sT ROAD i�}mk�Jl�,es RcP z631 Engineer name and firm: j o a L.o CS _s1 o Phone: �s9-z8o —356'7 - Email: MILLp. 1, * ag oV A9454AA49AAA1 JeJE Is the project confirmed to be in the State MSI Stormwater Permit jurisdiction? Vlyes or ❑ No ❑ Low Density (no curb and gutter) ❑ Low Density with curb and gutter outlets & igh Density ❑ Other ❑ 401/404 impacts to surface waters, wetlands, and buffers (add language to cover letter and/or add info letter) /BUA � �% [� Check for $505.00 included tr Original signature (not photocopy) on application Legal signature (Corporation-VP/higher, Partnership -General Partner/higher, LLC-member/manager, Agent), Check spelling, capitalization, punctuation: http://www.secretary.state.nc.us/corporations/thepage.aspx If an -agent signs the application, a signed letter of authorization from the applicant must be provided which includes the name, title, mailing address and phone number of the person signing the letter. ❑/ For subdivided projects, a signed and notarized deed restriction statement of Sealed, signed & dated calculations ` D Correct supplement and O&M provided for each BMP on site (check all that were provided & number of each) N / ❑ Bioretention ❑ Dry Detention Basin ❑ Filter Strip ❑ Grass Swale Infiltration Basin ❑ Infiltration Trench ❑ Level Spreader ❑ Permeable Pavement ti Restored Riparian Buffer ❑ Rooftop Runoff Management ❑ Sand Filter ❑ Stormwater Wetland ❑ Wet Detention Basin ❑ Low Density 0 Curb Outlet ❑ 'Off'Site ❑ NCDOT Linear Road Two sets of sealed, signed & dated layout & finish grading plans with appropriate details Narrative Description of stormwater management provided t�Soils report provided Gov Tf,,-+rK+c t L. Wetlands delineated or a note on the plans or in the accompanying documents that none exist on site and/or adjacent property 54/ Details for the roads, parking area, cul-de-sac radii, sidewalk widths, curb and gutter; �d Dimensions & slopes provided Drainage areas delineated ❑ Pervious and impervious reported for each ❑ Areas of high density BMP operation and maintenance agreefpzits provided ❑ Application complete K ❑ Application In Returned: (Date) Comments 44+V6 May 5, 2011 Revision, Bill Diuguid Ft r Sr- +,,/c e- LA-VPS ufi/ 4 IKoz-y.