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HomeMy WebLinkAboutSW6100901_HISTORICAL FILE_20100902STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE d YYYYM DD B Sandhills Community College Logan Hall Southern Pines, North Carolina Stormwater Management Plan August 31, 2010 ����` ENGINEERS IIMAkUj PLANNERS tS\N// ECONOMISTS ����� WilburSmith A S S O C I A T E S 421 Fayetteville Street Suite 1303 Raleigh, NC 27601 0 DENR-FRO SEP 0 2 2010 DWQ n Sandhills Community College Logan Hall Southern Pines, North Carolina Project Description The purpose of the project is to construct a new classroom building on the existing Einstein Parking lot and add a new 150 space parking lot where the existing Maintenance Building is currently located including the area south of the maintenance building. The total net impervious increase due to the project is 19,602 sf. The project consists of clearing, grading and drainage, and paving work to construct the new building and associated sitework. Site Description The site for the new classroom building location is an existing asphalt parking lot and the new surface parking area is replacing the existing maintenance building and yard and a wooded area between the maintenance building and the Douglass Parking Lot. The current drainage pattern has the runoff sheet flow from Causey Hall across Einstein Lot into the wooded area, roughly east to west on the site. The proposed drainage will roughly follow this same pattern and discharge through a combination closed storm sewer system and curb cuts from the parking lot. All outlets will be protected with rip rap energy dissipaters. The closed storm sewer system will discharge into a rip rap lined forebay before being treated in a grassed Bioretention cell. The project is located in the Cape Fear River Basin. According to FIRM maps, no floodplains exist within the project limits. Adjacent Property The properly is a community college with adjacent property consisting of a private school to the north, rural residential land and an airport to the east, Reservoir Park to the south and residential properties to the west. The site is off of Airport Road just south of` NC 22. Planned Stormwalcr Management Practices The runoff for increase in the impervious area of the project area will be treated in a grassed Bioretention cell. The runoff will first be treated in a rip rap lined forebay before receiving final treatment in the grassed Bioretention cell and then being released back into the groundwater. Calculations of the added impervious area are attached, along with the BMP design supplement. m I ,u ji Ck v- r Y fK ?joy -- -igIT, All "j." I&F-11WIxa7:1.U1 Area of Interest (AOI) O Area of Interest (AOI) Soils 0 Soil Map Units Special Point Features U Blowout ® Borrow Pit X Clay Spot Closed Depression X Gravel Pit „ Gravelly Spot ® Landfill A Lava Flow ,J, Marsh or swamp 4d Mine or Quarry po Miscellaneous Water 0. Perennial Water .� Rock Outcrop } Saline Spot Sandy Spot Severely Eroded Spot 0 Sinkhole Slide or Slip 0 Sodic Spot Spoil Area Q Stony Spot Soil Map -Moore County, North Carolina (Logan Hall) MAP INFORMATION Very Stony Spot Map Scale: 1:8,370 if printed on A size (8.5" x 11 ") sheet. Wet Spot The soil surveys that comprise your AOI were mapped at 1:24,000. Other Please rely on the bar scale on each map sheet for accurate map measurements. Special Line Features '9 -. Gully Source of Map: Natural Resources Conservation Service Web Soil Survey URL http://websoilsurvey.nres.usda.gov � Short Steep Slope Coordinate System: UTM Zone 17N NAD83 Other This product is generated from the USDA-NRCS certified data as of Political Features the version date(s) listed below. p Cities Soil Survey Area: Moore County, North Carolina Water Features Survey Area Data: Version 12, Nov 2, 2007 ED oceans Date(s) aerial images were photographed: 6/18/2006 1 Streams and Canals The orthophoto or other base map on which the soil lines were Transportation compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting Rails of map unit boundaries may be evident. N Interstate Highways iv US Routes mMajor Roads Local Roads USDA Natural Resources Web Soil Survey 5/18/2010 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map —Moore County, North Carolina Logan Hall Map Unit Legend Moore County, North Carolina (NC125) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI AeD Ailey loamy sand, 8 to 15 percent slopes 81.3 26.8% Bb Bibb loam, 0 to 2 percent slopes, frequently flooded 8.5 2.8% CaB Candor sand, 0 to 4 percent slopes 128.4 42.3% CaC Candor sand, 4 to 12 percent slopes 78.3 25.8% VaD Vaucluse loamy sand, 8 to 15 percent slopes 3.1 1.0% W Water 3.7 1.2% Totals for Area of Interest 303.3 100.0% USDA Natural Resources Web Soil Survey 5/18/2010 Q= Conservation Service National Cooperative Soil Survey Page 3 of 3 1. VANrr. A. 11 „DRRRY L33 N. W. BROAD ST. OUTTIS N t'LNS?B, N. C NORTH CAROLINA MOORS 'COUNTY 111I3 .PEW, .nade.,and entered into this 3rd clay of J Cl9rca y� 1964, by and between MA iY LUMF;Ai ,,M13Yi k,, (WIDO ) , of Moore County, North.Carolina, hereinafter referred to as Grantor, and THE BOARL' OF ':iiU"J'TZE3 Jr" i0UkCF,.COUNTY 0-7'1114UNITY COLUGE, a body corporate created and existing under and by virtue of Chapter 115A of the General itat- satea of North Carolina, hereinafter referred to as Grantee; e I T 1C EGGS c:TH Wi[EgEA ;, the hereinafter. described tract of land was conveyed by warranty deF=.d dated" January 12, 19510 by Edward J. Barber and Ferman Goldcnan, as Trustees of the trusts under the Last.V:'ill and Testament of James Harter, and Edward J. Barber, individually, and wife, Ethel A. Barber, Grantors, to C. Ionia Mayer and xife,,relary Luman ;eyer, Grantees, said deFd beim:; duly recorded ir. the Moore County tegistry in Deed Hook I72, Fagg 64A; and HEiiwAS, all interest l;slongin& to C. Louis Mayer in 1;in° hereinafter described tract of land was devised to Gr+an- for in Paragraph Third (b) of the will of C. Louis Mayer; ci nd WHEREAS, the said Fill was duly filed for orob��t9 in lake County, Illinois, letters of administration were issued, and the estate of C. Louis Mayer,,deceased, wav-duly and properly adsginie ered,gnd,,�ettled ,',and !''HERE�A89 a duly and properly exemplified copy of the said will of C. Louis Meyer and of the records of the said rob.ate Court of Lake County;' Illinois, relating thereto h::tve been filed and recorded in the office of the Clerk of 0.1perior Court of Moore. County, North Carolina, in !.'ills Book """ at page 239; and U HSnEA.33 the Grantee herein, by virtue of e.he feneral Statutes of idcrth Carolina (Chanter 115f.) :end retiolution of the State Board of Education dated November 7, 1963, has been -2 - VANUX K DEHHY {$ N. W. 11HOAD $9]. UTHEUN PINES, N. E conferred the power to rnce:ive,acquire :and hold title to real and personal property by purchase or donation; .and WHEREAS, the 5rantor herein has for mony years field a strong, interest in and for the citizens of Moore County, particularly in the fields of health and education; and WHEREAS$ t:hn Grantor desires to make a gift of the hereinafter described tract to the, Grantee for the purposes of establishing ra Community College; NOt4', THEREFORE, in consideration of the acceptance by Grantee of the tract hereinafter described and the ,use rand disposition thereof by it for the purpose of establi.shinp ra Community College, nrantor has given, granted, transferred and conveyed and by these presents does eive, (grant, transfer and convey to the Grantee a certain tract of Land looted on the rest side of the Southern Pines-Knollwood :airport Road (N.C. Highway #22) adjoining the lands of T.O. Moss, Randolph, 00e Town of Southern Pines watershed tract, and others, and more particularly described as follows: BEGINNING at a point in the center of the Sou- thern sines-rinollwood Airport Road where the `.eyer-Randolph line cro5see said road, running; thence from r.ho beJnning with the Meyer -Ran- dolph line H. 89 degrees 06' W. 1.2$6 feat to a concrete monument; Wnce N. 1 degree 02f E. 62.9 feet.to r'a concrete monument, Burke's cor- ner; thence with Burke 0. 08 degrees 589 W. 647.4 feet to a concrete monument, a corner of the Moore County Community College 100-acre tract as convoyed by Mary Luman Meyer in Decem- ber, 1963; thence :with a line cf said tract S. 28 degrees 42T W. 1680 felt to a point in the `Southern Pines watershed property line, a corner of the )GO -acre tract; thencw with the watershed lines 3, 84 degrees 221 E. 1.435 feet to a con- cr6te monument, S. 68 degrees 19' E. 432.5'feet tc a concrete monument, :and V, 52 degrees 53' F. 1288.8 Net to a point in the center of Lhe Sou- thern Pines-1 no llw.00d Airnort Road; thence along the center of the pravem6k N. 1.1 degrees 281 W. 218.2 feet, N. 4 degrees 37' W. 274.6 feet and N. 6 degrees 05' W. 349.4 feet to the BEGINNING) containing 81.04 acres, more or less, and being a portion of the tract conveyed to C. i.,ouis Meyer and Xary Lumen Meyer. by deed. dated January 12, 1951, and recorded in Crook 172, `age 641 of the boore County registry. Together with all and singular the tenements, heredi- taments, and appurtonnaccs thereunto belonging, or in anywise appertaining; :and the reversion and reversions, remainder and remainders, rents, issues, and profits thereof, and all the -3- PAN(;I'. A. DI;RHY 33 N. NV, BROAD ST. }pTUEIIN I-INES, N. l estate, right, title, interest, property, claim, and demand, whatsoever, of the Grl.ntor, of, in, and to ohn promises, with the appurtenances, -nd every part thereof. TO PAVE. AND TO BOIL all and singular the above -granted premises, with the nppurte•nances, unto the Grantee, and its successors and assigns in title, to their own proper use and beh^of, forever. Ih WITNE, 3;; 1p,7LEREOPI the said Mary Luman 1=eyer has here- unto set her hand and seal, tho day knd year first above written. NORTH CAROLING MORE COUNTY it C� e-6-, liq • 17 ,P Notary Public, do hereby certify that 'Vary Luman Mayer personally appeared be- fore me this day and acknowledged the duo execution of the foreroiw Deed of Conveyance. `:'fitness my hand :and notarial seal., this 3rd day of January, 1964. r�q — Notary Public (� Pay commission expires: ?A An - /to Q/ . NORTH CAR51,10't MOORr COUNTY The foregoing, certificrate of a Notary Public of :Moore County, State of North Carolina, is adjudged to be correct. QC the instrument, with the certi.fi.- Onto, be registered. Witness my hand and official Beal, this day of -- - 1961. MR of wuser or Court SUBJECT W H Gr kt U JOB NO. SH _OF WilburSmith ASSOCIATES BY DATE t �p�su� Lw-Puviews ', ,�-d�lct�, i i ff S(C�Cwei�41 �II"G�r�tl Tel DA- = i , Tz'Q�; 1 1- I �i i WilburSmith SUBJECT JOB NO. SH OF ASSOCIATES nnnn BY DATE CeIS CH. DATE I U. �G �v<.� J—v���,P.✓Ii�oVt _ki r , G��,.��.� iJ. h'. c �.- U`+-,c = IIJ60ZSt. I ✓ J. }��roCi I I I Vol'u 2r- I 0,07JL o) = 4,,�3 I I I jyi i � 1Z� i_�Iq, j I 3�30� flZil 1 I I =,?4301 1; 6 � �0-`30�C1- I .4s V — 13 O7 IG� I dtiFIL�. �, /GI•GS �... �✓f c. r2M7-WfC� I I i WIe, I =.9_S�4c 7 O.,�S[ I� T_ _ T-- �- -+- III II 1 7-1 J I I ' I Sox IZzx i1ti" cle p = tz70�� :Z66.�� .✓� 'I I I I ' y- I 1 � ARiVIA NCDENR Permit Number:'* 0 (VL (to be provided by DWO) o20p WATFgOG % r � r O Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak control Storage Volume: Non -SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5" runoff volume Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Cell Dimensions Pending depth or water Ponding depth of water Surface area of the top of the bloretention cell Length: Width: -or- Radius Media and Soils Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In -situ soil: Soil permeability Planting media soil: Soil permeability Soil composition • Sand (by weight) • Fines (by weight) Sandhills Community College New Classroom Building Tre Dugal, PE 919-573-4190 Outlet from Basin 48 57,063 pz 45,738 p2 80.2% % 1.0 inch N (Y or N) in in/hr ft"/sec ft3/sec ft'/sec 1,326.0 h3 1,366.0 h3 OK If It It 0 If It 12 inches 1.00 If 1,569.0 It3 52 It 31 ft ft 6 hr 12 hr 18 hr 7.50 in/hr 2.00 in/hr 88% 8% OK OK OK OK OK OK OK OK OK OK Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 1 of 3 Organic (by weight) 4% OK Total: 100% Permit Number oi6 _ (to be provided by DWO) Phosphorus Index (P-Index) of media (unitless) Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 2 of 3 Permit Number:-�VloLCD- (to be provided by DWO) Basin Elevations Temporary pool elevation 441.00 fri l Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Y (Y or N) OK Is this a cell with trees/shrubs? (Y or N) Planting elevation (top of the mulch or grass sod layer) 440 fmsl Depth of mulch 3 inches OK Bottom of the planting media soil 438 fmsl Planting media depth 2 if Depth of washed sand below planting media soil 0.25 ft Are underdrains being installed? N (Y or N) How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and 0 It the bottom of the cell to account for underdrains Bottom of the cell required 437.75 fmsl SHWT elevation 435.67 fmsl Distance from bottom to SHWT 2.08 It OK Internal Water Storage Zone (IWS) Does the design include IWS Y (Y or N) Elevation of the top of the upturned elbow fmsl Separation of IWS and Surface 440 it Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the Y bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP localed at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an X' in the shaded cell) Gravel and grass (8'inches gravel followed by 3-5 ft of grass) Grassed swale Forebay Other N (YorN) OK (Y or N) ft (Y or N) Show how flow is evenly distributed. Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK 9.67 fYsec Insufficient inlet velocity unless energy dissipating devices are being used. N (Y or N) OK N (Y or N) OK Y (Y or N) OK r. NIS Form SW401-Bloretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 3 of 3 Permit No'' W wO (to be assigned by DWO) III.- REQUIRED ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Page/ Plan Init' s Sheet No. G;J 1. Plans (1"- 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Cell dimensions, - Pretreatment system, - High flow bypass system, - Maintenance access, - Recorded drainage easement and public right of way (ROW), - Clean out pipe locations, - Overflow device, and Boundaries of drainage easement. 2. Plan details (1" = 30' or larger) for the bioretention cell showing: - Cell dimensions - Pretreatment system, - High flow bypass system, - Maintenance access, - Recorded drainage easement and public right of way (ROW), - Design at ultimate build -out, - Off -site drainage (if applicable), - Clean out pipe locations, - Overflow device, and Boundaries of drainage easement. - Indicate the P-Index between 10 and 30 / 3. Section view of the bioretention cell (1"= 20' or larger) showing: - Side slopes, 3:1 or lower - Underdrain system (if applicable), and - Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone If applicable), N57 stone, underdrains (if applicable), SHWT level(s), and overflow structure[ �/t 11,, "^c W r r!,L /n 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The results of the soils report must be verified in the field by DWO, by completing & submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in situ soil must include: - Soil permeability, - Soil composition (% sand, % fines, % organic), and �� "��p - P-index. i 11 5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing: - A variety of suitable species, - Sizes, spacing and locations of plantings, - Total quantity of each type of plant specified, - A planting detail, - The source nursery for the plants, and Fertilizer and watering requirements to establish vegetation. L41cP1"� `"S 6. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. 7. A construction sequence that shows how the bioretention cell will be protected from sediment until the entire drainage area is stabilized. K 6IPCQ The 8. supporting calculations (including underdrain calculations, if applicable). �ryC eW1 �1� / 9. A copy of the signed and notarized inspection and maintenance (I&M) agreement. /rl�A.61 10. A copy of the deed restriction. Form SW401-Bioretention-Rev.7 Part III, Page 1 of 1 STORM DRAIN DESIGN COMPUTATIONS Data 61912010 Project: Sandhi Its Community College Logan Hall County: Moore Designed by: MAD Checked by: THS Inlet No./ Description From Structure Number To Structure Number Area Cum. Area "A" (acres) Runoff Coal, "C" Sum "CA" Time Of Cons. 'Tc" (min) Rainfall Intensity "I10" (irMr) Total Runoff "010" (cls) Invert Inlet Elev Invert ullel Elev Pipe Slope (h) Design Pipe Size (in) Design Full -Pipe Capacity (cfs) Actual Velocity (fps) Travel Time (min) 1/DI 1 2 0.21 0.21 0.41 0.09 5.00 7.29 0.63 463.15 461.68 1.99 12 5.02 4.37 0.28 2/DI 2 3 0.5 071 0.35 0.26 5.28 7,22 1.89 461.50 46032 2,00 12 5.04 5.96 0.16 3/DI 3 4 0.04 0.75 036 0.28 5.45 7,19 1,98 460.15 458.39 2.00 12 5.04 6.03 C24 41DI 4 5 0.06 0,81 C60 0,31 5.69 7.13 2,22 458,22 457,18 2.00 12 5.04 6.21 0.14 51CB 5 E% 0.17 0,9811 0.9011 OAS 5.631 7.101 3.30 457.001 455.08 2.00 12 5,04 6.84 0.23 Ex, 18"RCP Check 1.0 1.98 060 1.06 6.06 7.05 7.50 453,45 451.48 0.86 18 9,72 6071039 6101 6 7 0.08 0.08 0,45 0.04 500 7.29 0.26 46300 45800 476 12 7,77 4.457IDI 7 8 0.1 018 052 0.09 5.39 7.20 0.63 457.83 457.06 2.03 12 507 441WCB 8 9 0.4 058 0.90 045 5.53 7.17 3.21 45691 445.40 455 12 7,60 9,27 Page 1 or t �t n�TM Lp ECS CAROLINAS, LLP "Setting the Standard for Service" �aa®aa"&s Geotechnical • Construction Materials • Environmental • Facilities July 12, 2010 Mr. Ron Peters Sand Hills Community College 3395 Airport Rd. Pinehurst, NC 28374 RE: In -situ Infiltration Testing — SCC — Classroom Building Pinehurst, North Carolina ECS project no. 33:1374 Dear Mr. Peters: ECS has completed the infiltration testing for the above referenced project please see the attached boring log for all pertinent information regarding the location explored. If you have any questions, please contact me at your earliest convenience. Best regards, Miguel Santiago, P.E. NC P.E. License 033082 Vice President / Branch Manager ,,,�`vae¢aoa�aaeea gH CA�'''•o. • A_ps o s -.,cGnn•. HGINEEti >°�C� mom:'/�O s• ``` q•.., •° °;`\ opt ••••P•'�eet�'1 � r`�ang5� 726 Ramsey St., Suite 3• Fayetteville, NC 28301• T 910-401-3288 • F: 910-323-0539 • www.ecslimited.com ECS Carolinas, LLP • ECS Flodda, LLC • ECS Illinois, LLC • ECS Mid --Atlantic, LLC • ECS Southeast, LLC • ECS Texas, LLP Infiltration Evaluation SCC — Classroom Building Pinehurst, Moore County, North Carolina ECS Project No. 33.1374 July 12, 2010 Location Depth Soil Description -1 0-24" Orange coarse to fine SAND w/ Silt, trace clay 24"-28" Tan gray coarse to fine silty SAND 28"-42" Tan medium to fine SAND 42"-102" Orange coarse to fine SAND, Trace Clay • Seasonal High Water Table was estimated to beat 52.0 inches below the existing grade elevation. • Infiltration Rate: 7.5 inches per hour. • Test was conducted at 36 inches below existing grade elevation. • Groundwater was encountered at >120.0 inches below the existing grade elevation. • CLIENT JOB # BORING g SHEET Sand Hills Community College 33:1374 1-1 PROJECT NAME ARCHITECT —ENGINEER �LLP SCC — Classroom Building Cnrz—� SITE LOCATION -o- CALIBRATEDN9/fE"LIOEM 3395 Airport Rd. 1 2 3 4 S+ PLASTIC WATER UQUDD,. Pinehurst, NC 28374 LMIT CONTENT % LOHT X 3 DESCRIPTION OF MATERIAL ENGLISH UNITS 6` ROCK QUALITY DESIGNATION @ RECOVERY S o z B07WM OF CASING W- LASS OF CIRCULATION IODX - z o ROD%— — — REC.% c 20%-40X-60%80%100X- a SURFACE ELEVATION ® STANDARD PENETRATION BLOWS/FT. O 10 20 30 40 50+ Orange, Coarse to Fine„ SAND w/ Silt (SM) Trace Clay Tan Gray, Coarse to Fine, Silty, SAND (SM� Tan, Medium to Fine, SAND (SM) 5 Orange, Coarse to Fine, SAND (SM) Trace Clay END OF BORING ® 8.50' 1 SHWT O 52.0 Inches Test performed at 36.0 inches Ground water encountered O > 102 in. 15 Infiltration rote 7.5 inches per hour 20 25 30 — — TILE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY LINES BETWEEN SOIL TYPES IN -SITU THE TRANSITION MAY BE GRADUAL YwL> 102.0 in. WS OR ® BORING STARTED 05/19/10 YWL(BCR) TWL(ACR) BORING COMPLETED OS 1 9 1 O CAVE IN DEPTH O NA ,j WL RIG HA FOREMAN B.Wall DROLNG METHOD HA rA"A �`ENGINEERS IMOUlk PLANNERS ILIK\R// ECONOMISTS '%%N%%/ WiIburSmith A S S O C I A T E S August 31, 2010 DENR-FRO Mr. Mike Lawyer SEP 0 2 NO NCDENR-Division of Water Quality Surface Water Protection Service DWQ 225 Green Street, Suite 714 Fayetteville, NC 28301 RE: Sandhills Community College; New General Classroom Building Stormwater Management Permit Application Dear Mr. Randall: On behalf of Sandhills Conmmunity College, Wilbur Smith Associates is pleased to submit this application for storm water management associated with the proposed improvements for the above referenced project. The erosion control permit has been approved by NCDENR on July 14, 2010 (MOORE-2010-019). Attached please find the following: a. I — original of Stormwater Management Permit Application b. I — copy of Stormwater Management Permit Application c. I — original of Bioretention Operation and Maintenance Agreement d. 1 — original ol' Supplemental Form e. I — copy of storm drainage specifications, calculations and geotechnical report f. 2 — copies of plans g. I — check It. I — copy of the project narrative, USGS map, Soils Map, and property deed Please review and if you have any questions or need any additional information, do not hesitate to call me. Sincerely, WILBUR SMITH ASSOCIATES /', Ai Tre Dugal, 111, P.E. Project Manager Attachments W:ASandhills 24 - Lng;in li;dlAPermits\Stormwate,ANCDWQ Slormwater_LTR_OR31 IQdta: c: Ron Peters, Sandhills Community College 421 Fayetteville Street, Suite 1303 Raleigh, NC 27601 919.755.0583 f919.832.8798 www.WilburSmith.com D W Q USE ONLY Date Received Pee Paid Permit Number -2 to 1 sk,1610y 96 f Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - (select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Other WQ M mt Plan: 2008 ❑ Ph 11 - Post Construction ❑ Universal Storm water Management Plan State of North Carolina �O F R� �CN Department of Environment and Natural Resources E 1— Division of Water Quality SEP 0 Z 1010 STORMWATER MANAGEMENT PERMIT APPLICATION FORM �YYQ This form may be photocopied for use as an original YY L GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Sandhills Community College New General Classroom Building 2. Location of Project (street address): 3395 Airport Road City:Pinehurst County:Moore Zip:28374 3. Directions to project (from nearest major intersection): From intersection of Airport Road and NC 22 take Airport Road west towards Pinehurst. Turn left into the third entrance to the college and follow the signs towards the Einstein Lot. The new building is being constructed on the existing Einstein Lot. 4. Latitude:35* 13' 16" N Longihrde:79° 24' 34" W of the main enhance to the project. IL PERMIT INFORMATION I.a. Specify whether project is (check one): ®New ❑Modification b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known) , and the status of construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ❑High Density ❑Drains to an Offsite Stormwater System ®Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ®Sedimentation/Erosion Control: 3.7 ac of Disturbed Area ❑NPDES Industrial Stornmwater ❑404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each perm it:Sedimentation/Erosion Control has been obtained on July 14, 2010; permit no. MOORG2010-019. Form SWU-101 Version 07Jun2010 Page I of Ill. CONTACT INFORMATION I. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc, who owns the project): Applicant/Organization:Sandhills Community College Signing Official & Title:Richard i. Gough, Vice President of Administrative Services b.Contact information for person listed in item 1a above: Street Address:3395 Airport Road City: Pinehurst State:NC Zip:28374 Mailing Address (if applicable): City: Phone: (910 ) 695-3706 Einail:goughr@sandhills.edu State: Zip: Fax: (910 ) 692-4794 c. Please check the appropriate box. The applicant listed above is: ®'fhe property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (this is the person who owns the property that the project is located on): Property Owner/Organiza Signing Official & b.Contact information for person listed in item 2a above: Street Address: Mailing Address (if Zip: State: Zip: Phone: ( ) Pax: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization: Signing Official & b.Contact information for person listed in item 3a above: Mailing Address: City: Phone: ( 1 4. Local jurisdiction for building permits: Point of Contact: Fax: Phone ii: Form SWU-101 Version 07Jun2010 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. The stormwater runoff from the net increase of impervious area added due to the construction of the new classroom building and new parking on an existing parking lot will be treated in a bioretention cell with a 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW -1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the Cape Fear River basin. 4. Total Property Area: 1.32 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. Total Property Area (4) -Total Coastal Wetlands Area (5) -Total Surface Water Area (6) = Total Project Area*:1.32 acres Total project area shall be calculated to exclude the following the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Waler (MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to calculate overall percent built upon area (BLIA). Nmr-coastal wetlands landward of the NI-IW (or Ml-IW) lice may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X "I00 = 80 % 9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered stormwater BMP. For low density and other projects, use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area 1 Drainage Area _ Drainage Area _ Drainage Area _ Receiving Stream Name Nicks Creek Stream Class * WS-III Stream Index Number * 18-23-3 Total Drainage Area (so 57,500 On -site Drainage Area (sf) 57,500 Off -site Drainage Area (so 0 Proposed Impervious Area** (so 45,738 % Impervious Area** total 80 Impervious— Surface Area Drainage Area 1 Drainage Area _ Drainage Area _ Drainage Area _ On -site Buildings/Lots (sf) 26,136 On -site Streets (so On -site Parking (so 17,320 On -site Sidewalks (so 2,105 Other on -site (so Future (so Off -site (so Existing BUA*** (so "Total (so: 45,738 Stream Class and Index Number can be determined at: kitty://porfaLncdenr.org eoeb wq(j�s/nu/classif'catinns Form SWU-101 Version 07Jun2010 Page 3 of 6 fillpenvious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. ***Report only that amount of existing BUA that will remain after development. Do not report ally existing BUA that is to be removed and which will be replaced by new BUA. 11. I-Iow was the off -site impervious area listed above determined? Provide documentation. No offsite impervious area contributes to the drainage area at the location of the stormwater treatenrent measure. Proiccts in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent smnnwater requirements as per NCAC 02B .0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from littp://portal.ncdenr.org/web/wq/ws/su/bnip-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from http://portaLncdetir.org/web/wq/was/su/statesw/forms does. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be foundbylocatingprojectontheinteractiveonlinemapathttp://pm�tal.nccicnr.org web wcfws/su/maps.) Please indicate that the following required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package fromhttp://portil.ncclem.org/web/wq/ws/su/statesw/forms does. Initials 1. Original and one copy of the Stormwater Management Permit Application Form, %i%iz 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants N/A - Form. (if required as per Part VII belozo) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http'//www.enviielp.org/pages/onestopexpress.htmi for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2 mile radius on the map. 7. Sealed, signed and dated calculations. 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Project name. b. Engineerand firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NI-IW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with bearings & distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. 1. Details of roads, drainage features, collection systems, and stormwater control measures. %!f g -r'#]3 -7-Y' < Ti+�B 77�P Form SWU-101 Version 07Jun2010 Page 4 of 6 in. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior to submittal, (910) 796-7378.) /}l? ,y/A 1[Q 11. A copy of the most current property deed. Deed book: L <v Page No: S IS For corporations and limited liability corporations (I -LC): Provide documentation from the NC Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 21-1.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. ham: / /;vww.secretarv.state.nc.us/Corpoi-,itioiis/CSearch.aspx VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from httkx/ /portafncdenr.org/web/wq/ws/su/statesw/forms_ does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. . By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming tinder them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot. Vill. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer:Tre Dugal PE Consulting Firm: Wilbur Smith Associates Mailing Address:421 Fayetteville Street Suite "1303 Cily:Raleigh Phone: (919 ) 573-4190 Email:nndugal©wilbursmith.com State:NC Zip:2760'1 Fax: (919 ) 832-8798 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type none of person listed in Contact Information, item 2a) certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item la) with (print or hype name of organization listed in Contact Information, item la) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version 07Jun2010 Page 5 of 6 As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me; the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Nanne/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. Da a Notary Public for the State of . County of do hereby certify that before me this _ day of personally appeared and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission expires X. APPLICANT'S CERTIFICATION I, (print or type name of persmz listed in Contact Information, item 1a) Richard I. Gough - Vice President of Administrative certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of the applicable stormwater rules under 15A NCAC 2FI.1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211. Date: 8/914-/;LC)to e61-a—/�,_a�fa Q _ a Notary Public fo-r/ Che State of — County of VILe- do hereby certify that t�' L. GQa j-ok. personally appeared before me this4�day of 4U-��, d and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, ...muuuo,.. p10TA,%, my COMMI SON ,a 7CPIpES �p�pUBLIG ��? SEAL My commission expires f 0 l/ d l /1 Q/ V Form SWU-101 Version 07Jun2010 Page 6 of6 Pennit Number. rJ✓' 6 �b (a (to be provided by DWQ) Drainage Area Number: Bioretention Operation and Maintenance Agreement I will keep a maintenance record on this 13MP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the I3MP. Important operation and maintenance procedures: — Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly six weeks). — Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell. — Heavy equipment will NEVER be driven over the bioretention cell. — Special care will betaken to prevent sediment from entering the bioretention cell. — Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblems: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to bioretention cell erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. The inlet device: pipe, The pipe is clogged (if Unclog the pipe. Dispose of the stone verge or swale applicable). sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). Erosion is occurring in the Regrade the swale if necessary to swale (if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and clogged covered in sediment (if stone and replace with clean stone. applicable). Porin SW401-Bioretention O&M-Rev.3 Page I of BMP element: Potentialproblems: How I will remediate theproblem: The pretreatment area Flow is bypassing Regrade if necessary to route all pretreatment area and/or flow to the pretreatment area. gullies have formed. Restabilize the area after grading. Sediment has accumulated to Search for the source of the a depth greater than three sediment and remedy the problem if inches. possible. Remove the sediment and restabilize the pretreatment area. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to revent future erosion problems, Weeds are present. Remove the weeds, preferably by hand. The bioretention cell: Best professional practices Prune according to best professional vegetation show that pruning is needed practices. to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Tree stakes/wires are present Remove tree stake/wires (which six months after planting. can kill the tree if not removed). The bioretention cell: Mulch is breaking down or Spot mulch if there are only random soils and mulch has floated away. void areas. Replace whole mulch layer if necessary. Remove the remaining much and replace with triple shredded hard wood mulch at a maximum depth of three inches. Soils and/or mulch are Determine the extent of the clogging clogged with sediment. - remove and replace either just the top layers or the entire media as needed. Dispose of the spoil in an appropriate off -site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the problem if possible. An annual soil test shows that Dolomitic lime shall be applied as pH has dropped or heavy recommended per the soil test and metals have accumulated in toxic soils shall be removed, the soil media. disposed of properly and replaced with new planting media. Form SW401-Bioretention O&M-Rev.3 Page 2 of 4 -. 6MP element: Potentialproblems: How I will remediate theproblem: The underdrain system Clogging has occurred. Wash out the underdrain system. if applicable) The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off -site. The drop inlet is damaged Repair or replace the drop inlet. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 1 733-1786. Form SW401-6ioretention O&M-Rev.3 Page 3 of 4 Permit Number: (10 be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Sandhills Community College New General Classroom Building BMP drainage area number: Print name:Richard J. Gough Title: V ice President of Administrative Services Address:3395 Airport Road Pinehurst, NC 28374 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, ilQ(,!_R i0l . 6 [ (k41- , a Notary Public for the State of /IC , C f) County of Aot/ � , do hereby certify that Q tit e oi-d J-C• 6ouc = personally appeared before me this Y"k- day of gat o , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, M. NpTARY MY COMMIS ION N IRES f� n Pusoc SEAL My commission expires Form SW401-Bioretention I&M-Rev. 2 Y (Ln /� < 6&ce-_ Page 4 of 4