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Home My WebLink AboutSW8041120_COMPLIANCE_20141228STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE ,��, YYYYMMDD State Stormwater Inspection Report General Project Name: Q(A to �� is Cutu�n. �ut ,t Permit No: SW8 AkII-0 Expiration Date: (2-r201 tq Contact Person: Phone Number: Inspection Type: (Z com Inspection Date: Time In: r� Time Out: Current Weather: Recent Rain (Date)? Rain --- in Facility Address 1 Location: 14W A, w{S¢ a �- W T u1I t ,uI �--a f(,.✓j,,q City: fAwjuVt4J L �v Zip: County: t4rtc1(,t YLat: ° w ` ' "N Long: - 0 1"W Permit Information ��4 Rule Subject to (circle one): 1988 Coastal Rule 1995 Coastal Rule 2008 Coastal Rule Session Law 2006-246 Goose Creek High ua rty Waters Outstanding Resource Waters Density (circle one): I [igh (HD) Low (LD) Stormwater Best Management Practices (BMPs) (insert number of each): I Wet Ponds Infiltration Basins Infiltration Trenches LD Swales Stormwater Wetlands Dry Ponds Bioretention Permeable Pavement Sand filters (circle one) Open Closed Cistern Level Spreader/Filter Strip Other (specify): File Review Yes No NIA NIE 1. Is the permit active? 2. Signed Engineer's Certification on file? 3. Signed Operation and Maintenance agreement on file? 4. Recorded Deed Restrictions on file? Site Visit: Built Unon Area {BUAI Yes No NIA NIE 5. BUA is constructed and consistent with the permit requirements? 6. BUA aspermitted) is graded such that the runoff drains t the-sv ensit on1 7. Drainage area is consistent withpermit? (i.e n ermitted drainage to the SW BMPs S. Drainage area is stabilized? (to reduc sk of se imentation t_gLAe SW MPs) Site Visit: Stormwater BMPs 1 I / I Fl �0 6X l ( y ) Yes No NIA NIE 9. Stormwater BMPs are located per t app vW plars? 10. Stormwater BMPs have dimensions (e Ien th, width, area)aatching the approvedplans?_---' 11. Stormwater BMPs are constructed per the a dplans? Site Visit: Oaeration and Maintenance Yes No NIA NIE 12. Access points to the site are clear and well maintained? 13. Trash has been removed as needed? 14. Excessive landscape debris Crass clippings, leaves, etc) is controlled? 15. Ston-riwater BMPs being operated and maintained as per the permit requirements? 16. Inspection and Maintenance records are available for inspection? (high density only, 1995 —present onl Site Visit: Other Permit Conditions Yes No NIA NIE 17. Is the site compliant with other conditions of thepermit? Site Visit: Other Water Quality Issues Yes No NIA N/E 18. Is the site compliant with other water quality issues as noted during the inspection? State Stormwater Inspection Report, Version 3.0_3-09 Page 1 of 2 State Stormwater Inspection Report Ins ectlon Pictures (some of the pictures taken during the site visit) Compliance Status ❑ Compliant ❑ Non -Compliant i Letter Sent (circle one): Yes No Letter type: CEI NOV NOVRE Other Date Sent: Reference Number: Inspector Name and Signature: Date: State Stormwater Inspection Report, Version 3.0_3-09 Page 2 of 2 Compliance Inspection Report Permit: SW8041120 Effective: 12/28/04 Expiration: 12/28/14 Owner: Pond Properties Inc Project: Pond Properties Commercial Development County: Carteret Hwy 70 W Region: Wilmington Morehead City NC 28557 Contact Person: William A Brown Title: Phone: 252-726-1005 Directions to Project: From intersection of Hwy 70 & Hwy 24, take Hwy 70 West approx 2 miles, located on right at corner of Gladys Teasley. Type of Project: State Stormwater - HD - Detention Pond Drain Areas: 1 -(Hull Swamp) (03-05-03 ) ( C) On -Site Representative(s): Related Permits: Inspection Date: 01/21/2010 Entry Time: 01:45 PM Primary Inspector: Angela K Hammers Secondary Inspector(s): Reason for Inspection: Routine Permit Inspection Type: State Stormwater Facility Status: Cl Compliant ❑ Not Compliant Question Areas: E State Stormwater (See attachment summary) Exit Time: 02:15 PM Phone: 919-796-7215 Ext.7317 Inspection Type: Stormwater Page: 1 Permit: SW8041120 Owner - Project: Pond Properties Inc Inspection Date: 0112112010 Inspection Type: Stormwater Reason for Visit: Routine Inspection Summary: As of this inspection, No BUA or SW measures have been constructed. The project area is adjacent to Gladys Teasley Drive and the VA Outpatient Center on Hwy 70. Yes No NA NE Ile Review Is the permit active? ■ ❑ ❑ ❑ Signed copy of the Engineer's certification is in the file? ❑ ❑ ■ ❑ Signed copy of the Operation & Maintenance Agreement is in the file? ■ ❑ ❑ ❑ Copy of the recorded deed restrictions is in the file? ❑ ❑ ■ ❑ Comment: Built Upon Area Yes No NA NE Is the site BUA constructed as per the permit and approval plans? ❑ ❑ ❑ ■ Is the drainage area as per the permit and approved plans? ❑ ❑ ❑ ■ Is the BUA (as permitted) graded such that the runoff drains to the system? ❑ ❑ ❑ ■ Comment: No BUA has been constructed as of this inspection. SW Measures Yes No NA NE Are the SW measures constructed as per the approved plans? ❑ ❑ ❑ ■ Are the inlets located per the approved plans? ❑ ❑ ❑ ■ Are the outlet structures located per the approved plans? ❑ ❑ ❑ ■ Comment: No SW measures have been constructed as of this inspection. Operation and Maintenance Yes No NA NE Are the SW measures being maintained and operated as per the permit requirements? ❑ ❑ ❑ ■ Are the SW BMP inspection and maintenance records complete and available for review or provided to DWQ ❑ ❑ ❑ ■ upon request? Comment: No BUA or SW measures have been constructed as of this inspection. Page: 2 WET DETENTION POND ANALYSIS FILE NAME: S:1WQS\POND\041120.dec04.WK1 PROJECT#: SW8 041120.dec04 REVIEWER: L. Lewis M u\ L/�Y— PROJECT NAME: Pond Properties Commercial Site DATE: 28-Dec-04 Receiving Stream- Hull Swamp Class: C Drainage Basin: White Oak Index No. WOK03 21-15 Site Area 2.99 acres Drainage Area square feet Area in Acres 1.82 IMPERVIOUS AREAS Building Parking/Road SW TOTAL SURFACE AREA CALCULATION % IMPERVIOUS 78.77% Des. Depth 4 TSS: 90 VOLUME CALCULATION 17850.00 square feet 42438,00 square feet 2028.00 square feet square feet square feet square feet square feet Rational ?* Des. Storm 1 inches Rv= 0.759 Bottom 8 msl Perm. Pool msl Design Pool 13 msl Storage met @elev 12.74 msl Req. Volume .03 cf Vol. Prov. at DIP 6 747 c f ORIFICE CALCULATION Avg. Head = Flow Q2, cfs Flow Q5, cfs No. of Orifices Diameter, inches Drawdown = 0.47 ft 0.029 cfs 0.012 cfs . ........ . . 25. weir H x W ............ ............ days Rational C Including access easement pavement Rational Cc= 0.04 SA/DA Ratio 6.88% Req. SA 5440 sf Prov. SA 567 sf * place a "'I" in the box if Rational is used FOREBAY Perm. Pool Volume= Req. Forebay Volume= Provided Volume= Percent= Elevation 12.00 13.00 Area 5672.00 7821.00 Q2 Area = 1.26 Q5 Area = 0.50 Orifice Area 1.23 Q= 0.028 in x Surface Area @DP = Falling Head Drawdown COMMENTS Sur -face Area , Volume and Orifice are within Design Guidelines. 10889 2177.8 3158.00 Inc. Vol. Acc. Vol. 0.00 6746.50 6746.50 sq. inches sq. inches sq. inches cfs in 7821 sq. ft. 3.8 days STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 SOB �r� � -aS �or�c� m ' CS SHEET NO. OF j may/ CALCULATED BY DATE , 1 d c CHECKED BY (kCDATE SCALE STORMWATER DETENTION POND DESIGN DRAINAGE AREA = 79,113 SF DRAINAGE TO SC WATERS = 1 INCH HULL SWAMP - CLASS C ��,11911111/1/D/10 .•``(�-(H CAR' . oFSSio2�'1%v '. = SEAL 9r't 13 • 343 rfi'9� !NS •,�, •�� PROPOSEDIMPERVIOUS AREA 4'+`• BUILDINGS 17850 SF PARKING/DRIVES = 42,438 SF SIDEWALK = 2,028 SF TOTAL = % IMPERVIOUS = 62,316 SF 78.77% (INCLUDES EXISTING IMPERVIOUZE C E I r E D 80.00% (USE FOR DESIGN) USE A 4.0' DEEP POND WITH 90%TSS REMOVAL (SEE SA/DA CHART) SA/DA = 7.00% DEC 0 3 2004 MIN. REQ'D SA @ PERMANENT DWQ�} POOL = 5538 SF r� SAREao = (SA/DA)(DRAINAGE ARvAOJ # �U Q0`-rI r ZV SA PROVIDED = 5672 SF MIN. REQ'D VOLUME Rv = 0.05 + 0.009(%IMP)= 0.77 VOLUME REQ'D = 5076 CF VOLREaD = (1'/12')(Rv)(DRAINAG E AREA) VOLUME PROVIDED = 6747 CF OVERFLOW DEVICE L=QjdCwH�2 Q, 0 = 9.33 CW = 3.0 (BROAD CRESTED WEIR) H = 0.50 L = 8.80 9 FT MINIMUM WEIR LENGTH OVERFLOW DISCHARGE PIPE = 24" RCP @ 0.3% VELOCITYFULL = 3.94 FT/S USE CLASS A RIPRAP 8'x6'xl' SEDIMENT TRAP DESIGN SED. DRAINAGE DRAINAGE SED. STORAGE TRAP TRAP PROPOSED TRAP AREA (SF) AREA (AC) REQ'D (CF) 'DEPTH (FT) AREA TRAP (SF) S 1 7500 0.17 310 3 103 10 x 12 = 120 SEDIMENT BASIN (PROPOSED POND DURING CONSTRUCTION) SED. DRAINAGE DRAINAGE SED. STORAGE STORAGE PROVIDED BASIN AREA (SF) AREA (AC) REQ D (CF) IN POND C 1 74600 1.71 3083 11655 (FOREBAY + MAIN BASIN) STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 PERMANENT POOL VOLUME (method per DWQ) jos PM63�- 25 FonJ Po SHEET NO. OF CALCULATE DATE �Iv'1 CHECKED 6 DATE SCALE 0�,I For For SEAL 13343 � 3 aka .�C`4, �Q, . •�� Elevation Section SA SF Avg. SA Ht. FT Vol. CF 12.00 Permanentpool 5672 4132 1.67 6900 10.33 Shelf 2592 17U 2.33 3989 8.00 Bottom 832 Total Vol. 10889 FOREBAY VOLUME Elevation Section SA SF Avg, SA Ht. FT Vol. CF 12.00 Permanent pool 1408 790 4.00 3158 8.00 Bottom 171 Total Vol. 3158 Forebay % of Permanent Pool Volume = MAIN BASIN VOLUME 29.00% (forebay depth same as main basin) Elevation Section SA SF Avg. SA Ht. FT Vol. CF 12.00 Permanent pool 4264 3083 1.67 5148 10.33 Shelf 1901 1241 2.33 2890 8.00 Bottom 1 580 Total Vol. 1 8038 Storage volume required 5076 CIF Elevation Section SA SF Avg. SA Ht. FT Vol. CF 12.00 Permanent pool 5672 6747 1.00 6747 13.00 Storage pool 7821 Total Vol. 6747 rj STROUD ENGINEERING, P.A. Hestron Plaza Two SHEET NO. OF f 0 PIN PN 151 A Hwy. 24 CALCULATED BY � DATE MOREHEAD CITY, NC 28557 CHECKED BY DATE (252) 247-7479 SCALE R`F 1-1 '4R '•. 0FSs10ti�9•. M SEAL �``: IM 13343- 4 ORIFICE SIZING orifice dia.= 1.25 in. orifice area= 0,0085 sf orifice eqn. = Q=CDA(2gh)^112 Cd= 0.6 minutes:_._. _....-.,.._....._................_....__..._..._....-.__...- -- __...................._..._. stora volume ,y;: ,1,5076 fth3 (required 1" ` overflow .= ';::,.::_: 13 :,::.c: ,;. LL.. ............. -- - - ._.........._... perm: p0ph'eI' _,i._ Time Cumulative Cumulative Volume Height Flow Increment Time Time Initial Out (minutes) (minutes) (hours) (ft"3) (feet) (cfs) 0 0 5075.00 1,00 0,0410 120 120 2 5076.00 1.00 0.0410 120 240 4 4780.71 0.94 0.0398 120 360 6 4494.13 0.89 0.0386 120 480 8 4216.28 0.83 0.0374 120 600 10 3947.15 0,78 0.0362 120 720 12 3686,75 0.73 0.0350 120 840 14 3435,09 0.68 0.0337 120 960 16 3192.17 0.63 0.0325 120 1080 18 2958.00 0.58 0-0313 120 1200 20 2732,58 0.54 0.0301 120 1320 22 2515.92 0.50 0.0289 120 1440 24 2308.03 0.45 0.0277 120 1560 26 2108.91 0.42 0.0264 120 1680 28 1918.57 .0.38 0.0252 120• : - 1800:.' 30 1737.03 0.34 0.0240 124 ..., ... 1920 32 1564.29 �.0:31 ' ":..0.0228 1 "20 ' 2640 34 1400.36 . 0.28 .0.0215 120• 2160 36 1245.26 025- '0.0203 12Q 2280.'' ''.. 38 1099.00 Q22, "•0.0191 120. : • • '. ; 2400 40 961.60 0.19 0.0179 120 2520 42 833,07 0.16 ' 0.0166 120 2640 44 713.44 0.14 0.0154 120 2760 46 602.74 0.12 0.0141 120 2880 48 500.98 0,10 0,0129 120 3000 50 408.21 0.08 0.0116 120 3120 52 324.47 0.06 0,0104 120 3240 54 249.81 0.05 0.0091 120 3360 56 184.30 0.04 0,0078 120 3480 58 128.04 0.03 0.0065 120 3600 60 81.14 0.02 0.0052 120 3720 62 43.80 0.01 0.0038 120 3840 64 16.37 0.00 0.0023 Volume Volume Out Remaining (cf) (ft^3) 0.00 5076.00 295.29 4780.71 286.58 4494.13 277.85 4216.28 269.13 3947.15 260.40 3686.75 251.66 3435.09 242.92 3192.17 234.17 2958.00 225.42 2732.58 216.66 2515.92 207.89 2308.03 199.12 2108.91 190,34 1918.57 181.54 1737.03 172.74.,..,_ 1564.29... .. ..... .. .... . .163.93, .1400.36 155.10 1245.26 14&:26 ' 1099.00 137.40 - 961.60 - 128.53 833.07 119.63 713.44 110.71 602.74 101.76 500.98 92.77 408.21 83.74 324,47 74.66 249,81 65.51 184.30 56.27 128.04 46.90 81.14 37.33 43.80 27.43 16.37 16.77 -0.40 2.67DAYS