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HomeMy WebLinkAboutSW8050116_COMPLIANCE_20050207PERMIT NO. DOC TYPE DOC DATE STORMWATER DIVISION CODING SHEE POST -CONSTRUCTION PERMITS ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION IN YYYYMMDD TopoZone - The Web's Topographic Map Page 1 of 1 i i,,�_,+,)itopozone..Ckw 1 I'�1 ,.�...';;--�y .'I _./ _ =-_k.� _ '-. 1•.r fIr/'�. s..tn j i{� I�',I: CUpyt7�Git199�}2000MiWa�pllE kC - r �� .N•' _ ��� 1. 3 �� II.10'�•�- � � ���4-*� `n`� _ - -1•- tiSµ• yam,' =� + - �.:�•J,�'�.a.��4`:� a� J17J/�� ••� ✓ \ � I �, --L''r 1 i „i n 1 -. �F A,. -__ /''1"--�ti..%f l }'j �: ,�`� [� YYY f a,.. ••..` -"t - - .: - '...! M ». `."ice.^^ ."' � / .' :�'w-dt. �'i♦ H`� ••_\ 1 r .r -". _t _- *" N. e _ ate. 1` J i I:. `- '.'+v. " �r���''l, y.� '� ^! " -�J'•_ n �ll. 1`....� �.- �1i "k. �.r• r 'F's - ""_ _ � �- _ `"- p _ •. •1 w `� r• � �� 1` `�3 . � � 5'} �'/9 �'�'' kl•�` __r•�" "`y J� i��.i/, .s � 1.. ��,-•� r • � r:. '- ' '" -R- ,+," �;� •^ ^�•� h-~ ../ ,., •r I '�. 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'��1 I f 1 ' i, r f+OAf I • �'�.s *; ,'. s ':�" y��i��i r � l :r"�+ ^ �_ �»�ti�1•�,,, ,•�` IkIl, i .r•r -a sysW .1, � I IL, . �� .?i. • •�'.' �III11i. f} i } �•-, "ram. -`�_ _f.•r_ £c' G:�\`r�.� �, "- • i ti 1S a„" (•. hA �C 0 0.3 0.6 0.9 1.2 1.5 km 0 0.2 0.4 0.6 0.8 1 mi Map center is 340 44' 39"N, 760 47' 50"W (WGS84/NAD83) Mansfield quadrangle M=-9.87 Projection is UTM Zone 18 NAD83 Datum 8=-1,028 http://www.topozone.com/print.asp?z-18&n=3846144.00002792&e=33 5470999991177&s... 2/7/2005 DETENTION POND ANALYSIS FILE NAME: 050116 PROJECT#: SW8 050116 REVIEWER: P.Bartlett PROJECT NAME: GATCO 11, LLC Receiving Stream: Newport River Drainage Basin: White Oafs/ DATE: Class: Index No 07-Feb-05 Sc 21-(1) Site Area v2.58 acres Drainage Area square feet Area = �52 acres IMPERVIOUS AREAS bldgs pkg sidewalks 1011-All J/ v971 Rational C 0.95 0.00 square feet -""'66483.00 square feet 0.95 tl--'2270.00 square feet 0.95 square feet square feet square feet + square fee'M, SURFACE AREA CALCULATION % IMPERVIOUS /71.52% Des. Depth ✓ 5 TSS: ✓ go Rational Cc= 0.74 SA/DA Ratio 5.11 % v� Req. SA 5602 sf v -5 54 Prov. SA sf V 1: VOLUME CALCULATION * place a "i" in the box if Rational is used Rational ?* 1 FOREBAY Des. Storm inches Perm. Pool Volume= 19614 Rv= 0.69 Req. Forebay Volume= 3922.8 Bottom 20 msl Provided Volume= 4161.00 Perm. Pool msl V/ Percent= Design Pool 26 msl Design SA 8901 sf Req. Volume cf jj A @ Prov. Volume cf✓Elevation= ORIFICE CALCULATION Avg. Head = 0.47 ft Q2 Area = 1.69 sq. in. Flow Q2, cfs 0.039 cfs Q5 Area = 0.68 sq. in. Flow Q5, cfs 0.016 cfs Orifice Area 1.23 sq. in. No. of Orifices Q= 0.028 cfs Diameter, inches f: 25 ]weir H x W in x in Drawdown days ;'I COMMENTS Surface Area , Volume and Orifice are within Design Guidelines STRGUD ENGINEERING, P.A. JOB--m Hestron Plaza Two SHEET NO. _ 151 A Hwy. 24 CALCULATED MOREHEAD CITY, NC 28557 CHECKED BY (252)247-7479 OF STORMWATER DETENTION POND DESIGN DRAINAGE AREA = 109,708 SF DRAINAGE TO SC WATERS = 1 INCH (NEWPORT RIVER - THE IMPERVIOUS AREA BUILDINGS = 9,710 SF PARKING/DRIVES = 66,483 SF SIDEWALK = 2,270 SF TOTAL = 78,463 SF % IMPERVIOUS = 71.52% 72.00% (USE FOR DESIGN) USE A 5.0' DEEP POND W ITH 90% TSS REMOVAL (SEE SA/DA CHART) SA/DA = 5.14% Wad -BAT E f I Wit fiutt"' °•°°''0 0ARp�� �'•. S " WS)11 • MIN. REQ'D SA @ PERMANENT POOL = 5639 SF SAREQ'D = (SA/DA)(DRAINAGE AREA) SA PROVIDED = 6615 SF MIN. REQ'D VOLUME Rv = 0.05 + 0.009(%IMP)= 0.70 VOLUME REQ'D = 6381 CIF VOLREQ'D = (1"112")(Rv)(DRAINAGE AREA) VOLUME PROVIDED = 7759 CF D11 D12 D13 014 D11 + D12 + D13 +D14 D12 + D13 + D14 D13 D14 OVERFLOW PIPE STORMDRAIN PIPE SIZING DRAINAGE AREA (SF) DRAINAGE AREA (AC) C. 1 010 40950 0.94 0.95 7.23 6.46 12008 0.28 0.95 7.23 1.89 22879 0.53 0.95 7.23 3.61 26033 0.60 0.95 7.23 4.10 Q (CFS) PIPE PROPOSED % SLOPE Q PROPOSED PIPE FLOWING FULL (CFS) 16.06 24" RCP 0.60% 17.52 5.50 18" RCP 1 0.30% 5.75 1 18" RCP 0.30% 5.75 0 ff 18" RCP 0.30% 5.75 6 24" RCP 0.54% 16.62 STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 PERMANENT POOL VOLUME (method per DWQ) JOB SHEET NO. OF — '3 CALCULATED BY git A DATE -A�-j d -OT\ CHECKED BY _ DA77EE�-�- tv,,ewSRlli llla��� 1 ill SCALE _ Elevation Section SA (SF) Avg. SA Ht. (FT) Vol. (CF) 25.00 Permanent pool 6615 5585 1.67 9326 23.33 Shelf 4554 3089 3.33 10287 20.00 Bottom 1624 Total Vol. 19614 FORE13AY VOLUME" Elevation jSe6tion SA (SF) Avg. SA Ht. (FT) Vol. (CF) 25.00 ;` Perri anent pool 2007 1387 3.00 4161�, 22.00 Bottom 767 Total Vol. f 4161 Forebay % of Permanent Pool Volume = MAIN BASIN VOLUME 21.22% Elevation Section SA (SF) Avg. SA Ht. (FT) Vol. (CF) 25.00 Permanent pool 4449 3246 1.67 5422 23,33 Shelf 2044 1199 3.33 3994 20,QD Bottom 354 \ Total Vol. I ( 9415 j Storage volume required i 6381 CF �r Elevation Section SA (SF) Avg. SA Ht. (FT) Vol. (CF) 25.00 Permanent pool 6616 --' 7759 1.00 7759 26.00 Storage pool 1 8901 Total Vol. ( 7759 OVERFLOW DEVICE L=Q 1 ICw H312 019 = 16.06 CW = 3.0 (BROAD CRESTED WEIR) H = 1.00 L = 5.35 6 FT MINIMUM WEIR LENGTH c s S,�; . 2 ` SEAL 13343 � • •11 o • � .,�(31NE� `%% STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 JOB PI 1 1 U SHEET NO. OF CALCULATED BY )_ 1 DATE CHECKED BY_ DATE. SCALE SEDIMENT BASIN (PROPOSED POND DURING CONSTRUCTION) SED, DRAINAGE DRAINAGE SED. STORAGE BASIN AREA (SF) AREA (AC) STORAGE PROVIDED REQ'D (CF) IN POND CF 1 129373 2.97 5346 13576 �c6��isR9lifl��al, •EA �.� t o C'1 .y. „E L ..t J • e' Y + MAIN BASIN `.�`b, x-N)1011 RIPRAP.OUTLET PROTECTION- ' 010 % SLOPE V FT15 24" DISCHARGE INTO POND 1 16.06 0.60 6.33 CLASS B 6'x6'x1.5' 24" DISCHARGE FROM OVERFLOW 1 16.06 1 0.54 1 6.03 1 CLASS B 6'x6'x1.5' STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 ORIFICE SIZING orifice dia.= 1.25 in. orifice area= 0.0085 sf Cd= 0.6 time increment 120 minutes storage volume 6381 ftA3 overflow el.= 26 perm. pool el.= 25 JOB emFJ SHEET NO._, y OF -_- CALCULATED BY C.! I l�w�tJ DATE CHECKED BY _ CATE SCALE 0. v "Q .y . 9 . SFgL r• 334 3 orifice eqn. = 4=CDA(2gh)A112 p ' 13 ' r 2� •�MGlN �Ee:•'� QiQ: CULL-� ,•�• (required 1") °°i+1ea11110"1 Time Cumulative Cumulative Volume Height Flow Volume Volume !'.; .Increment . ; Time .},; ; " .,, Time Initial Out Out Remaining (minutes), (minutes) (hours) (ftA3) (feet) (cfs) (cf) (ftA3) 0 0 6381.00 1.00- 0.0410 0.00 6381,00 120 120 2 6381.00 1.00 0.0410 295.29 6085.71 126 „ 3 240 4 6085.71 0.95 0.0401 288.38 5797.33 120 360 6 5797.33 0,91 0.0391 281,46 5515.86 120 480 8 5515.86 0.86 0.0381 274.55 5241.32 120 600 10 5241.32 0.82 0,0372 267.63 4973.69 120 720 12 4973.69 0.78 0.0362 260.70 4712.98 120 840 14 4712.98 0.74 0.0352 253.78 4459.20 120 960 16 4459.20 0.70 0.0343 246.85 4212.35 120 1080 18 4212.35 0.66 0.0333 239.92 3972.43 120 1200 20 3972.43 0,62 0.0324 232.99 3739.44 120 1320 22 3739.44 0.59 0.0314 226.05 3513.38 120 1440 24 3513.38 0.55 0.0304 219.12 3294.27 120 1560 26 3294,27 0.52 0.0295 212,17 3082.10 120 1680 28 3082.10 0.48 0.0285 205.23 2876.87 120 1800 30 2876.87 0.45 0.0275 198.28 2678.59 120 1920 32 2678.59 0.42 0.0266 191.32 2487.27 120 2040 34 2487.27 0.39 0.0256 184.36 2302.91 120 2160 36 2302.91 0.36 0.0246 177.40 2125.51 120 2280 38 2125.51 0.33 0.0237 170.43 1955.09 120 2400 40 1955,09 0.31 0.0227 163,45 1791,63 :120 2520 42 1791.63 0,28 0.0217 156.47 1635.16 120 2640 44 1635.16 0.26 0.0208 149.48 1485.68 120''' 2760 46 1485.68 0.23 0.0198 142.49 1343.19 120 2880 48 1343,19 0.21 0.0188 135,48 1207.71 120 3000 50 1207.71 0.19 0.0178 128,47 1079.25 120 3120 52 1079.25 0.17 0,0169 121.44 957.80 120 3240 54 957.80 0.15 0.0159 114.41 843.40 120 3360 56 843.40 0.13 0.0149 107.36 736.04 120 3480 58 736.04 0.12 0.0139 100.29 635.75 120 3600 60 635.75 0.10 0.0129 93.21 542.54 120 3720 62 542.54 0.09 0.0120 86.10 456.44 120 3840 64 456.44 0.07 0.0110 78.98 377.46 120 3960 66 377.46 0.06 0.0100 71,82 305.64 120 4080 68 305.64 0.05 0.0090 64.63 241.01 120 4200 70 241.01 0.04 0.0080 57.39 183.62 120 4320 72 183.62 0.03 0,0070 50.09 133.53 120 4440 74 133.53 0.02 0.0059 42.72 90.81 120 4560 76 90.81 0.01 0.0049 35.23 55.59 120 4680 78 55.59 0.01 0.0038 27.56 28.03 120 4800 80 28.03 UO- 0.0027 19.57 8.46 120 4920 82 8.46 0.00 0.0015 10.75 -2.29 = 3.42 DAYS Narrative Erosion and Sedimentation Control Plan Stormwater Management Plan GATCO 11, LLC January 5, 2005 Developer: GATCO I1, LLC P.O. Box 2410 Kitty Hawk, NC 27949 Engineer: Stroud Engineering, P.A. 151-A 11wy 24 Morehead City, NC 28557 (252) 247-7479 A. Description of Project 1. Type of Development This project consists of construction of an 8210 SF building with associated parking designated for 128 vehicles, load inglunloading zone, driveway, drainage, and site utilities. The site area is 2.58 acres. Earth Disturbing Activities a. Excavation and fill for building foundation and floor slab. b. Grading associated with driveway and parking lot construction. C. Excavation and backfill for site utilities. d. Excavation and backtill for installation of site drainage and excavation of the proposed stonnwatcr pond. 3. Soil types According to the Carteret County Soil Survey, the soils are classified as Ln-Leon sand. Drainage The site presently drains by surface runoff from the front of the property northward to Atlantic Railroad and then westward to the existing canal eventually draining to The Newport River (Class SQ. Following construction, all stormwater will be directed to drop inlets and then piped to a stonnwater detention pond adjacent to the rear property line. Discharge from the pond will be piped to the existing drainage ditch located along Atlantic Railroad B. Erosion and Sedimentation Control Measures The following measures are proposed for the site. If it becomes evident that additional erosion and sedimentation control treasures are needed, they shall be installed immediately. It is intended that all grading and excavation activities within a certain area will be protected as soon as that activity is complete. 1. Sediment Fence - Sediment fence will be utilized as necessary in locations as shown on plans or as deemed necessary by the engineer to insure that off -site sedimentation in controlled. 2. Sediment Basins- The detention pond to be constructed between the parking lot an the highway will serve as a sediment basin during construction. Sediment volume from the earth disturbing activities draining to the pond is estimated to be 5346 cubic feet based on 2.97 acres of disturbance. The pond has a capacity in excess of 13500 cubic feet. Once construction is completed basin shall be cleaned to the original design depth. 3. Temporary Sediment Trap — A sediment trap will be constructed as shown on plans and serve to trap sediment and prevent from the sediment moving off -site in concentrated areas. 4. Riprap outlet protection- Riprap to be installed at locations shown on plans to reduce energy at high velocity areas. 5, Seeding - All disturbed areas will be seeded within 14 days following construction in accordance with the seeding schedule shown on plans. 6. Existing Asphalt Construction Entrance -- Existing asphalt construction entrance will be used to reduce transport of sediment off site. 7. Drop Inlet Protection - Inlet protection, silt fence around inlets, will be used to reduce the amount of sediment entering the stone drainage piping system during construction. C. Time Sequence of Operations t. Remove and/or relocate any existing obstructions and demolition of structures. 2. Install stone construction entrances and begin clearing and grubbing. 3. Install silt lcncing at specified locations. 4. Complete clearing and grubbing operations. 5. Excavate, rough grade and construct stormwater detention basin with overflow device. 6. Seed and mulch all areas of disturbance not to be paved within 14 days of land disturbance. 7. Install drop inlets and storm drainage piping with sedimentation control measures as shown on detail. 8. Install utilities. 9. Fine grade drive and parking area and place stone base course. 10. Construct building. 11. Install curb and gutter, pave drive and parking area. 12. Perform final grading, seed and mulch all remaining disturbed areas. 13. Remove accumulated sediment from stonnwater detention basin to original design depth and perform final grading of basin. 14. Install wet detention basin vegetation as specified on seeding schedule. D. Design Assumptions 1. Design storm is ten years. 2. The rational method was used for design. E. ' Wet Detention Basin Operation and Maintenance 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. .b. Check and clear the orifice and overflow device of any obstructions. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (piping, flu)ms, swales, rip rap) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin systems semi-annually or when depth is reduced to 75% of the original design depth. Main Basin Forcbay Pond original design depth: 6.00' 3.00' sediment removal benchmark depth: 4.50' 2.25' Removed sediment shall be disposed of in an appropriate manner in no way adversely impacting water quality. 5. Remove cattails and other indigenous plants when they cover 50% of the basin surface. F. Coastal Stormwater Regulations The North Carolina Division of Environmental Management implemented coastal stonnwater regulations in coastal counties on January 1, 1988. these regulations are detailed in 15 NCAC 2H.1000 Stormwater Runoff Disposal. These rules allow for a development to be considered under various options. This project is submitted for approval consideration under Section .1003(d)(2). °%%-(N C`AJ O[ - i eo ••.••...� �i w`=O..o�ESSlpti �9 � = SEAL 13343 STORMWATER DRAINAGE AREA GATCO II, LLC PROPERTY MOREHEAD TOWNSHIP. CARTERET COUNTY. NORTH CAROLINA CLIENT: ALDIEN THORNTON DESIGNED: 4020 NORTH CROATAN HWY I BT11 ADDRESS. PO Box 2410 KITTY HAWK, NC 27949 PHONE, 252-255-1808 STROUD BNGINBBRINC, P.A, 151A HIGHWAY 24 MOREHEAD CITY, N.C. 28557 (252) 247-7479 -R(5NATb D. CULLfP`HE'R, P-f mDRAINAGE AREA - 109708 SF P��N'2�lw 4116 p 1p 70 4p DRAWN: RTM APPROVED: am DATE: SCALE: 1" - BO' g sm 1P SIR REE—�� �'Btj 4 2005 BY: AMV60 ialyM JO NOISIArn YN174Hy* N111011 i0 70 0 i0 12.0 SCALES I' m 60' Simi PROJECT *:PM 1531 SHEET • 1 OF 1 DRAINAGE AREAS GATCO II, LLC PROPERTY MOREHEAD TOWNSHIP. CARTERET COUNTY, NORTH CAF40LI14A CLIENT ALDIM T801RNTON DESIGNED: 4020 NORTH CROATAN HWY BTM ADDRESS, PO BOX 2410 DRAWN: KITTY HAWK, NC 27949 BTM PHONE: 252-255-1808 APPROVED: RDC S STROUD ENGINEERING, P.A. 151A HIGHWAY 24 DATE: MOREHEAD CITY, N.C_ 28557 12/30/0, (252) 247-7479 SCALE: DONA-.b D. CULLIPHER,—'.-E. V - 60, DRAINAGE AREA 01 =1 DRAINAGE AREA 92 DRAINAGE AREA 03 DRAINAGE AREA 14 st SIR ; �I�GI�t� of F YO IP SIR RECEIVED FEB �y�4 78 D�a BY: '" 9 APPROWD NL lH CAROLINA Ef;;I ,4' '-,1dfaTAL ` it,.f1AG2;.:-:;1T CC`..;;.:1'SION D ivOF WATER QUALITY Drts ! wfwaa w Poe ft`slwiy 0-tll�;� 60 30 0 50 120 SME: 1' - 60' PROJECT •: PM 1531 SHEET • 1 OF 1 Jan, 11. 2005 11 21AM .. STROUD ENGIN;EERi�G E' A i'` Y"Igo• P. 12 _� 4457 14CMR North Carolina Department of Environment and Natural Resouroes 127 Cardinal Drive Extension, Wilmington, NC 28405 (910)395-3900 FAX (910)350-2004 Request for Express Permit Review FILL-IN all information below and CHECK required Permit(s). FAX to Cameron Weaver along with a narrative and vicinity" hap of the project location. Projects must be submitted by 9:00 A M. of the review date,' unless prior arrangements are made. APPLICANT Name G. ALDEN THORNTON , Company GATCO II, LLC Address P.O. BOX 2410 City/State KITTY. HAWK, NC zip 27949 County DARE Phone 252-255-1818 Fax 252-247-5880 Email PROJECT Name GATCO II, LLC ENGINEER/CONSULTANT RONALD D. CULLIPHER, PE Company STROUD ENGINEERING, P.A. Address 151-A HWY 24 City/State ' MOREHEAD CITY, NC Zip 28557 County CARTERET Phone 252-247-7479 Fax 252-247-4096 ' Email rculllpher stmudengineevcom r; s v r •a STREAM ORIGINATION. CERTIFICATION ❑✓ STORMWATER ❑ Low Density 1, 2 High Density -Detention Pond ElHigh Density -Other ❑ Low Density -Curb & Gutter ElHigh Density- I nfiftration ❑ Off Site ❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ✓❑ LAND QUALITY Erosion and Sedimentation Control Plan with 2.97 acres to be disturbed. ❑ WETLANDS (401) ❑ No Wetlands on Site (letter from COE) []Wetlands DelineatedlNo JD ❑ Greater than 0.1 AC Wetlands Impacted;':, „,,07Jurisdictional Determination has been done ❑ Less than 0.1 AC Wetlands Impacted `i t{; ❑Greater than 0.5 AC Wetlands Impacted r The legislation allows addlaonal fees, not to exceed 50'/ of the original Express Review permit application fee, to be charged for subsequent reviews due to the insufficiency of the permit applications. SUBMITTAL DATES SW CAMA LOS _ 401 For DENR use only Fee Split for multiple permits: Total Fee Amount $ 2005 k21AM STROUD ENGINEERING P A No. 0457 P. 13 Narrative ; -- Erosion and Sedimentation Control Plan Stortnwater Management Plan GATCO 11, LLC January 5,2005 Developer: GATCO 11, LLC P.O. Box 2410 Kitty Hawk, NC 27949 Engineer: Stroud Engineering, P.A. 151-A Ilwy 24 Morehead City, NC (252) 247-7479 A. Description of Project 1. Type of Development This project consists of construction of a 9820 SF building with associated parking designated for 128 vehicles, loading/unloading zone, driveway, drainage, and site utilities. The site area is 2.58 acres. 2. Earth Disturbing Activities a. Excavation and fill for building foundation and floor slab. b. Grading associated with driveway and parking lot construction. C. Excavation and backfll for site utilities. d. Excavation and backfill for installation of site drainage and excavation of the proposed stormwater pond. 3. Soil types ` According to the,,Carteret County" Soil Survey; the soils are classified as Ln-Leon sand. 4. Drainage A' ` The site presently drains by surface runoff from the front of the property northward to Atlantic Railroad and then .westward to the existing canal,eventually draining to The Newport River (Class SQ. Following construction, all stormwater will be directed to drop inlets and then piped to a stormwater detention pond adjacent to the rear property line. Discharge from the pond will be piped to the existing drainage ditch located along Atlantic Railroad B. Erosion and Sedimentation Control Measures The following measures are proposed for the site. If it becomes evident that additional erosion and sedimentation control measures are needed, they shall be installed immediately. It is intended that all grading and excavation activities within a certain area will be protected as soon as that activity is complete. l . Sediment Fence - Sediment fence will be utilized as necessary in locations as shown on plans or as deemed necessary by the engineer to insure that off -site sedimentation in controlled. 2. Sediment Basins -The detention pond to be constructed between the parking lot an the highway will serve as a sediment basin during construction. Sediment volume from the earth disturbing activities draining to the pond is estimated to be 5346 cubic feet based on 2.97 acres of disturbance. The pond has a capacity in excess of 1354a cubic feet. 'Once construction is completed basin shall be cleaned to the original design depth. - i . 3. Temporary Sediment Trap.— A sediment trap will be constructed as shown on plans and serve to trap sediment and prevent from the sediment moving off -site in concentrated areas. 4. Riprap outlet protection- Riprap to be installed at locations shown on plans to reduce energy at high velocity areas. S. Seeding - All disturbed areas will be seeded within 14 days following construction in accordance with the seeding schedule shown on plans. 6. Existing Asphalt Construction Entrance — Existing asphalt construction entrance will be used to reduce transport of sediment off site. 7. Drop Inlet Protection - Inlet protection, silt fence around inlets, will be used to reduce the amount of sediment entering the storm drainage piping system during construction. :fi n, 11. 2005 11:22AM STROUD tNGiNHRiNG r A No.0457 P. 14 C. Time Sequence of Operations 1. Remove and/or relocate any existing obstructions end demolition of structures. 2. Install stone construction entrances and begin clearing and grubbing. 3. Install silt fencing at specified locations. 4. Complete clearing and grubbing operations. ' 5. Excavate, rough grade and "construct stormwater defention`basin with overflow device. 6. Seed and mulch all areas of disturbance not to be paved witbi'n 14 days of land disturbance. 7. install drop inlets and storm drainage piping with sedimentation control measures as shown on detail. 8. Install utilities. 9. Fine grade drive and parking area and place stone base course. 10. Construct building. l . Install curb and gutter, pave drive and parking area. 12, Perform final grading, seed and mulch all remaining disturbed areas. 13. Remove accumulated sediment from stormwater detention basin to original design depth and perfonn final grading of basin. 14, Install wet detention basin .vegetation as specified on seeding schedule. D. Design Assumptions 1. Design storm is ten years. 2. The rational method was used for design. ,r r E. Wet Detention Basin Operation and Maintenance" I, After every significant runoff producing raijnfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. b. Check and dear the orifice and overflow device of any obstructions. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system_ (piping, flumes, swales, rip rap) quarterly to maintain proper functioning. 4, Remove accumulated sediment from the wet detention basin systems semi-annually or when depth is reduced to 75% of the original design depth., y� , Main -Basin • ForebaY Pond original design depth: 6.D0' 3.00' sediment removal benchmark depth: 'r' 106' 2.25' Removed sediment shall be disposed of in an appropnate manner in no way adversely impacting water quality. 5. Remove cattails and other indigenous plants when they cover 50% of the basin surface. F. Coastal Stormwater Regulations The North Carolina Division of Environmental Management implemented coastal stormwater regulations in coastal counties on January 1, 1988, these regulations are detailed in 15 NCAC 211.1000 Stormwater Runoff Disposal. These`rules allow for a development to he considered under various options. This project is submitted for approval consideration under Section .1003(d)(2). ,,<<�N�Hfffflhl } r E 0onald:D. Cuilipher, P.C. Date off SEAL. = . _ • 13343 �%� Jan. 11, 2005 11,22AM STROUD ENGINEERING P tA- No, 0457 P. 15 Al !�,-�,, �. F - -'�. _ '. - f' i►YL, -.� '.��:/.� � sf ` LJFJJrf , .�, _ . .- 1)11j AA Lr _ l tom., _j- •(�tir� . J . • � __ � ,%� ;; j , � ;` rl '� • � / � r '..�r jam, • .• I `� , h✓i � '. j 111 k/ ^{� � t �...J 17�� I'� i y � - . � 7r' if ice` C} � St liI'>Kvke •y.23 . . !'• ` F 1''� � ''} ' rail �=-:`_'� i �J... j � •a' __ • " ��' � r : J. • •., �� 1 �.�:�+ . _ 'cam! � .� .. �� . /��.{f��Lr is 4 i 1 :'-� • • •• ,� y� �5 .. � ,: t••i .fir ��• �-. ,•...q.•,.�,.-yu�n .:. v.a�wae s•.�aorc�wn aw�t�•.xl �';.•ia ���bM(1 k#:�1;'.Q.1D1IiHc#'131 [fal�ii7� MAP GATCO 1.� , L�C Na a. 11. Y05 11:16AM STROUD DNGiNfEh1NG R No.0457 F. 3 ALT ONAA NCDENR North Carolina Department of Environment and Natural Resources 127 Cardinal Drive Extension, Wilmington, NC 28405 (910)395-3900 FAX (910)350-2004 Request for Express Permit Review FILLdN all information below and CHECK required Permit(s). FAX to Cameron Weaver along with a narrative and vicinity map of the project location. Projects must be submitted by 9:00 A.M. of the review date, unless prior arrangements are made. APPLICANT Name Richard Wayne See Company Wayne's Construction Co. Address P.O. BOX 1076 City/State Morehead City, NC Zip 28557 County Carteret Phone 252-726-5961 Fax '` ` ' Email PROJECT Name Wayne See Property I ENGINEER/CONSULTANT RONALD D. CULLIPHER, PE Company STROUD ENGINEERING, P.A. Address 151-A HWY 24 City/State MOREHEAD CITY, NC Zip 28557 County CARTERET Phone 252-247-7479 Fax 252-247-4098 Email rcullipher@stroudengineer.com ❑ STREAM ORIGINATION CERTIFICATION ❑✓ STORMWATER ❑ Low Density [0 Nigh Density -Detention Pond ❑ High Density -Other ❑ Low Density -Curb & Gutter ❑ High Density -Infiltration ❑ Off Site ❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information µ-Y MANAGEMENT ❑ Upland Development ❑ Marina Development ❑Urban Waterfront ✓❑ LAND QUALITY 0 Erosion and Sedimentation Control Plan with 27.90 acres to be disturbed. ❑ WETLANDS (401) ❑ No Wetlands on Site (letter from COE) [_]Wetlands Delineated/No JD ❑ Greater than 0.1 AC Wetlands Impacted ❑Jurisdictional Determination has been done ❑ Less than 0.1 AC Wetlands Impacted ❑Greater than 0.5 AC Wetlands Impacted The legislation allows additional fees, not to exceed 50% of the original Express Review permit application fee, to be charged for subsequent reviews due to the insufficiency of the permit applications. SUBMITTAL DATES: SW CAMA LQS 401 For DENR use only. Fee Split for multiple permits: Total Fee Amount $ Jan,11. 2005 11:17AM STROUD ENGINEERING P A No.0457 P. 4 Narrative Stormwater Management Plan Wayne See Property January b, 2005 Owner: R. Wayne See Morehead City, NC 285570 (252) 726-5961 Engineer: Stroud Engineering, P.A. 151-A Hwy 24 Morehead City; NC 28557 (252) 247-7479 A. Description of Project Wayne See Property is a planned commercial subdivision, located in Carteret County. The project consists of 30 commercial lots on 37.72 acres. The site presently drains to the north into The Narrows (Newport [fiver), which is classified as "SC" waters. The project is being proposed as high density with impervious surfaces totaling 62% of the tract (see plans for allotments). The project is proposing curb outlets and drainage ditches for the treatment of stormwater. The project will be constructed in two phases. The right of ways within eachphase will limit initial construction to one hundred feet. Once the utilities and roads are constructed and this area stabilized, the lots will then be disturbed on a lot by lot basis by others. The proposed land disturbance will not occur at one time. Prior to initiating a subsequent phase, the previous phase shall be stabilized. B. Erosion and Sedimentation Control Measures - I The following measures are proposed for the site. lf.it becomes evident that additional erosion and sedimentation control measures are needed, they shall be installed immediately. It is intended that all grading and excavation activities within a certain area will be protected as soon as that activity is complete. I. Sediment Fence — Sediment fence will be utilized as necessary in locations as shown on plans or as deemed necessary by the engineer to insure that off -site sedimentation is controlled. 2. Seeding — All disturbed areas will be seeded within 14 days following construction in accordance with the seeding schedule shown on the plans. 3. Stone Construction Entrance — Stone construction entrance will be used to reduce transport of sediment off site. 4. Temporary Sediment Traps — Sediment traps will be constructed as shown on plans and serve to trap sediment and prevent from the sediment moving off -site. Maintenance Plan 1 S I. All erosion and sediment control measures 'shall be checked for stability and cffective operations following every runoff producing rainfall event or at least once per week. Repairs required shall be completed immediately to the dimension and functions indicated on the plans. 2. Sediment shall be removed form behind the sediment fencing when it becomes 0.5 feet deep at the fence. The fence shall be replaced or repaired as necessary to maintain a barrier. File: pm81b-I0/nairative.doe Jan, 11. 2005 11, i7AM STROUD ENGINEERING P, A, ` No, 0457 F. 5 3. All seeded areas shall be fertilized, seeded and mulched within 15 days of disturbance. Disturbed areas shall be fertilized, reseeded and mulched as necessary according to the Contract documents to establish and maintain a dense vegetative cover. Construction Sequence 1. Clear and grub areas within right of way, drainage and utility easements as shown with land disturbance limits line. 2. Install stone construction entrance. 3. Install silt fencing where specified on plans within area,of construction. 4. Construct drainage ditches and temporary'sediment,'irap"s; where specified. Install Excelsior erosion control blanket within all swales. Seed constructed drainage swales within 14 days of land disturbance. 4 5. Construct pond. 6. Rough grade area within right-of-way 7. Install utilities. 8. Fine grade street areas and seed areas to remain outside of paved area. 9. Install curb and gutter, drainage features and place CABC. 10. Pave streets. 11. Perform final seeding and mulching. 12, Remove temporary sediment traps within drainage area once all lots within said drainage area have been developed and drainage swales are stabilized are stabilized. 13. Remove accumulated sediment from stormwater pond upon completion of project. C. Design Assumptions i 1 , I. Design storm is ten years. 2. The rational method was used for the design. D. Coastal Stormwater Regulations The North' Carolina Division of Environmental Management implemented coastal stormwater regulations in coastal counties on January 1, 1988. These regulations are detailed in 15 NCAC 214.1000 Stormwater Management. These rules allow for a development to be considered under various options. This project is submitted for approval consideration under Section .1003(d)(1) low density development. ,,•` ASH Cgitj o0. v ' Ronald D. Cullipher, P. Elate • SEALfir.. 73343 . 2 C: �•.iY1rL.11`' File: pm$t6-1Olnarmtive.doc .ian. l'i, 2005 i i; 17AM SHROUD ENG1VLEPANG A No. 0457 P. 6 L-� •:17 !� b o _ � �'',_ �ti, ' .. _ _ tip. _ - .._, �� , -roll---- ri x`•�3 r r / � J• ..y..^�i�.-�, :..�.'� -.packs �rlli� ".._�.,._�,•.�r.•. l_� �_� `'ly,-JIR lk 40 +•. �I-.i-'s;� '' �j: .� �I �1., , •.�.•''.• _ �., ,,jj,', • yr, •�'• .• ��; .. „�;;. �. ruin« Lcrmpt L—LIO ,asp laaatKE*W% ti■a«llan t'YZ f—�6*fl SAP: l: Jn► Ned DA lutm WQd • • i' T y MAP AlKE. ,SSE Prc�� ERT�I i. 1 74-1.0.; �v v with? j V1 Q -1 "yAl -00 Vwlv� ..... .. t7 - r Kin 7: J-1.. S7, 40 To"PAN w . al AM "WAY aT 1 A -MAW: X a - "MI A —Ax WASS CL 2. lot Q L 71 Tot L at AIR 1 UYJ lz� Skoog (a It 1: VAN NI'd 13-j I).U,. virm "'/'CIN I T Y MAP - GATCO U, L\,C