The URL can be used to link to this page

Home My WebLink AboutSW8000416_COMPLIANCE_20010219STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SWer_,r�o�I� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE rCOMPLIANCE EVALUATION INSPECTION DOC DATE �GY7�Ddl� YYYYMMDD i Compliance Inspection Report Permit SW8000416 Effective 02/19/01 Expiration County Brunswick Region Wilmington Contact Person Donald L Safrit Title VP Directions to Project Type of Project State Stormwater- HD - Detention Pond Drain Areas On -Site Representative(s) Related Permits Inspection Date 04/0912009 Entry Time 04 15 PM Primary Inspector David W Cox Secondary Inspector(s) Reason for Inspection Routine Permit Inspection Type State Stormwater Facility Status ❑ Compliant ❑ Not Compliant Question Areas Other (See attachment summary) Owner Ladane Williamson Company LLC Project Strand River Exlt Time 04 35 PM Phone 910-579-0733 Phone 910-796-7215 Inspection Type Stormwater Page 1 Permit SW8000416 Owner - Project Ladane Williamson Company LLC Inspection Date 04/09/2009 Inspection Type Stormwater Reason for Visit Routine Inspection Summary Site not constructed as of 04109/2010 Part of the tract is permitted under San Rio Developer has no interest in developing this tract under this permit Mr Ramsey has no interest in renewing Other Comment Yes No NA NE Page 2 SAND FILTER DESIGN DATE 18-Aug-2000 PROJECT NAME Strand River DRAINAGE BASIN Lumber RECEIVING STREAM Shallotte River Index No 15-25-2-7 5 SITE AREA 706 58 acres IMPERVIOUS AREA CALCULATION 1 BUILDINGS �� PARKING/STREETS �UO \�'5 CONCRETE, WALKS 04e OTHER % IMPERVIOUS, 1= BOTTOM OF FILTER TOP OF SAND OVERFLOW WEIR REQUIRED VOLUME 540 cubic feet per acre of DA Total volume required PROVIDED VOLUME DESIGN STORM AVERAGE SURFACE AREA DEPTH VOLUME TOTAL VOLUME PROVIDED REQUIRED SURFACE AREA PROVIDED SURFACE AREA ORIFICE DESIGN COMMENTS FILENAME S IWQSISFILTER1000416-2 WK1 PROJECT# SW8 000416-2 Filter #2 REVIEWER arl CLASS SC HQW If ORW, is site within the 575' AEC? DRAINAGE AREA 1$6437 SF SQUARE FEET 31349 SQUARE FEET SQUARE FEET SQUARE FEET TOTAL 31349SQUARE FEET RV= 05+ 009 (1) fl.20 16 5 FEET MSL 18 FEET MSL 20 FEET MSL Sediment Chamber Sand Filter 2311,20 CF 2311,20 CF 4622 405 CIF Sediment Chamber Sand Filter 11N 11N 5459 SF 3824 SF 2490 IN 24 IN 10918 CIF 7648 CIF 18566 CF 360 SF 360 SF 467Q SF 2947 SF PROPOSED ORIFICE DIAMETER 6 INCHES AVERAGE HEAD 1.8 FEET NUMBER OF ORIFICES 1.0 EACH FLOWRATE FOR 24 HOURS 0 0885 CFS FLOWRATE PROVIDED 1 3 CFS Volume and drawdown are within Design Requirements SAND FILTER DESIGN DATE 18-Aug-2000 PROJECT NAME Strand River DRAINAGE BASIN Lumber RECEIVING STREAM Shallotte River Index No 15-25-2-7 5 SITE AREA 706 58 acres IMPERVIOUS AREA CALCULATION BUILDINGS PARKING/WALKS J CONCRETE OTHER % IMPERVIOUS, 1= 1 68 6% BOTTOM OF FILTER TOP OF SAND OVERFLOW WEIR REQUIRED VOLUME 540 cubic feet per acre of DA Total volume required PROVIDED VOLUME DESIGN STORM AVERAGE SURFACE AREA DEPTH VOLUME TOTAL VOLUME PROVIDED REQUIRED SURFACE AREA PROVIDED SURFACE AREA ORIFICE DESIGN COMMENTS FILENAME S IWQSISFILTER1000416-1 WK1 PROJECT# SW8 000416-1 Sand Filter #1 REVIEWER arl CLASS SC HQW If ORW, is site within the 575' AEC? DRAINAGE AREA 153331 SF 38887 SQUARE FEET 60990 SQUARE FEET 5333 SQUARE FEET SQUARE FEET TOTAL j 105210 SQUARE FEET RV= 05+ 009 (1) 0 67 22 5 FEET MSL 24 FEET MSL 26 FEET MSL Sediment Chamber Sand Filter 1900,80.. CF I 1900.80 CF 3801595 CF Sediment Chamber Sand Filter 1 IN 1 IN 2518 SF 2790 SF 24 00 IN 24 IN 5036 CF 5580 CF 10616 CF �6O F 35 6F F 220SF- PROPOSED ORIFICE DIAMETER 6 inches AVERAGE HEAD 0,9 FEET NUMBER OF ORIFICES 1 0 EACH FLOWRATE FOR 24 HOURS 0 0646 CFS FLOWRATE PROVIDED 09 CFS Volume and drawdown are within Design Requirements DETENTION POND ANALYSIS FILE NAME S IWQSIPOND1000416-1 WK1 PROJECT # SW8 000416-1 Pond 1 PROJECT NAME Strand River Pond 1 REVIEWER Lewis DATE 23-Jan-2001 Receiving Stream Shallotte River & Sharron Cr Class SC HQW Chlorides nla Drainage Basin Lumber Index No 15-25-2-7 5 15-25-2-9-2 Site Area 706 58 acres Drainage Area 635916 00 �square feet needs to be verified Area in Acres 1460 acres IMPERVIOUS AREA Rational C-list beside each stem below in El to E20 1 � Building 103689 00 square feet C7� S `Pavement 229979 00 square feet $ 5 0 SW 3249600 square feet C Contingency 3005600 square feet 15 square feet 0 0 square feet TOTAL 396220 001 Cc= 008 % IMPERVIOUS 62 30% Des Depth 3 5 TSS 90 SURFACE AREA CALCULATION Rational ? ilf Rational is used put a SA/DA 6 23% "1" in box E26 If not, leave it blank Req SA _ 39622 square feet Prov SA� 41393 square feet [From plan Contours] VOLUME CALCULATION Perm Pool Volume= 130723 Req Forebay Volume= 261446 Bottom 16 00 MSL Provided Volume= 25898 Perm Pool [, 20 00�MSL Percent= [ 20% Design Pool 22 50 MSL Design SA 48744 square feet Des Storm 1 00 inches Req Volume 32366 icubic feet Rv= 061 Prov Volume 112671 Icubic feet SA @ - Elevation= ORIFICE CALCULATION Avg Head = 1 20 ft Flow Q2, cfs 0 187 Area, in 512 Flow Q5, cfs 0 075 Area, in 205 No of Orifices 1 iDiameter, in I 2 50 � Area = 4 909 in Q, cfs = 0 180 Drawdown = 2 1 jdays COMMENTS Surface Area and Volume are within Design Guidelines Orifice is too large DETENTION POND ANALYSIS FILE NAME S IWQSIPOND1000416-2 WK1 PROJECT # SW8 000416-2 PROJECT NAME Strand River Pond 2 REVIEWER DATE 23-Jan-2001 Receiving Stream Shallotte River & Sharron Cr Class SC HQW Chlorides nla Drainage Basin Lumber Index No 15-25-2-7 5 15-25-2-9-2 Site Area 706 58 acres Drainage Area 269201 00 Isquare feet needs to be verified Area in Acres 618 acres IMPERVIOUS AREA Rational C-list beside each item below in E15 to E20 �l�� Buildings 3052300 square feet �, Pavement 8588500 square feet Cartpath 196400 square feet Contingency 1622800 square feet square feet 0nGJ square feet TOTAL 1 134600 001 Cc= 010 % IMPERVIOUS 50 00% Des Depth 30 TSS 90 SURFACE AREA CALCULATION Rational ? L If Rational is used put a SAIDA 5 60% "1" in box E26 If not, leave it blank Req SA 15075 square feet Prov SA 15991 Isquare feet [From plan Contours] VOLUME CALCULATION Perm Pool Volume= 43315 Req Forebay Volume= 8663 Bottom 16 00 MSL Provided Volume= 20221 Perm Pool 20 001MSL Percent= ( 47% Design Pool 22 00 MSL Design SA 19720 square feet Des Storm 1 00 inches Req Volume f 1217 cubic feet Rv= 050 Prov Volume 35711 cubic feet SA @ - Elevation= ORIFICE CALCULATION Avg Head = 097 ft Flow Q2, cfs 0 065 Area, in 1 97 Flow Q5, cfs 0 026 Area, in' 079 No of Orifices 1 IDiameter, in 1 1 501 Area = 1 767 in' Q, cfs = 0 058 Drawdown = 2 2 jdays COMMENTS Surface Area and Volume are within Design Guidelines Orifice is too large DETENTION POND ANALYSIS FILE NAME S 1WQSIPOND1000416-3 WK1 PROJECT # SW8 000416-3 PROJECT NAME Strand River Pond 3 REVIEWER arl DATE 23-Jan-2001 Receiving Stream Shallotte River & Sharron Cr Class SC HQW Chlorides nla Drainage Basin Lumber _ Index No 15-25-2-7 5 15-25-2-9-2 Site Area 706 58 acres Drainage Area 779288 00 (square feet needs to be verified Area in Acres 1789 acres IMPERVIOUS AREA Rational C-list beside � each item below in E15 to E20 Building 139527 00 square feet Parking 190432 00 square feet Cart Path 863400 square feet 0� Contingency 3558700 square feet square feet square feet TOTAL 1 374180 001 Cc= 010 % IMPERVIOUS 48 02% Des Depth 4 0 TSS 90 SURFACE AREA CALCULATION Rational ? I_ IIf Rational is used put a SAIDA 4 14% "1" in box E26 If not, leave it blank Req SA 32272 square feet Prov SA - 32414 square feet [From plan Contours] VOLUME CALCULATION Perm Pool Volume= 95935 Req Forebay Volume= 19187 Bottom 3 00 MSL Provided Volume= 21975 Perm Pool 1 8 00 JMSL Percent= [ 23% Design Pool 9 00 MSL Design SA 35713 square feet Des Storm 1 00 inches Req Volume L 31311 cubic feet Rv= 048214062 Prov Volume 32707 cubic feet SA @ _ Elevation= LCU Avg Head = Flow Q2, cfs 0 181 Flow Q5, cfs 0 072 044 ft Area, in' 819 Area, in 328 No of Orifices 1 (Diameter, in 3001 Area = 7 069 W Q, cfs = 0 156 Drawdown = 2 3 Idays COMMENTS Surface Area, Volume and orifice are within Design Guidelines DETENTION POND ANALYSIS FILE NAME S IWQSIPOND1000416-4 WK1 PROJECT # SW8 000416-4 PROJECT NAME Strand River Pond 4 REVIEWER arl DATE 23-Jan-2001 Receiving Stream Shallotte River & Sharron Cr Class SC HQW Chlorides nla Drainage Basin Lumber Index No 15-25-2-7 5 15-25-2-9-2_ Site Area 706 58 acres Drainage Area [, - 300564-00 Isquare feet needs to be verified Area in Acres 690 acres IMPERVIOUS AREA Rational C-list beside each item below in E15 to E20 Budding 2847200 square feet Parking 7409000 square feet SW 373900 square feet Cart Path 1146500 square feet Contingency 3251600 square feet square feet TOTAL I _ 150282 001 Cc= 010 % IMPERVIOUS 50 00% Des Depth 3 5 TSS 90 SURFACE AREA CALCULATION Rational ? If Rational is used put a SAIDA 5 00% 1" in box E26 If not, leave it blank Req SA 15028 square feet Prov SA 15707 Isquare feet [From plan Contours] VOLUME CALCULATION Perm Pool Volume= 38722 Req Forebay Volume= 77444 Bottom 4 00 MSL Provided Volume= 8851 Perm Pool [ 9 00JMSL Percent= [ 23% Design Pool 9 80 MSL Design SA 17385 square feet Des Storm 1 00 inches Req Volume 12524 cubic feet Rv= 05 Prov Volume 17507 cubic feet SA @ 10 = 2848000 Elevation= 1000 ORIFICE CALCULATION Avg Head = 0 36 ft Flow Q2, cfs 0 072 Area, in 362 Flow Q5, cfs 0 029 Area, in2 1 45 No of Orifices 1 IDiameter, in 1 2 00 Area = 3 142 in2 Q, cfs = 0 063 Drawdown = 2 3 Nays COMMENTS Surface Area and Volume are within Design Guidelines Orifice is too large