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Home My WebLink AboutSW6120301_401 Certification Application_20120323Permit No. (to be provided by DWQ) PIMA STORMWATER MANAGEMENT PERMIT APPLICATION FORM r a � NCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required items Checklist (Part 111) must be printed, rifled out and submitted along with all of the required information. I. -PROJECT INFORMATION ',�,t,-.�:4,-: i' £y +€ � n•tt; a <,... � ;. '$ :; Project Name CVS Cameron, NC Contact Person Chris Bostic' Phone Number 919-653-2927 Date 302012 " Drainage Area Number 1 If:�DESIGN`INFORMATION' Site Characteristics Drainage area 55,327,23 ft' Impervious area 41,167.24 ft' Percent impervious 74.41 % Design rainfall depth 1.00 in Peak Flow Calculations 1-yr, 24-hr rainfafl depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr discharge Post -development 1-yr, 24-hr discharge Pre/Post 1-yr, 24-hr peak flow control Storage Volume: Non -SA Waters Minimum design volume required Design volume provided Storage Volume: SA Waters 1.5" runoff volume Pre -development 1-yr, 24-hr runoff volume Post -development 1-yr, 24-hr runoff volume Minimum required volume Volume provided Soils Report Summary Soil type Infiltration rate SHWT eievation Basin Design Parameters Drawdown time Basin side slopes Basin bottom elevation Storage elevation Storage Surface Area Top elevation Basin Bottom Dimensions Basin length Basin width Bottom Surface Area J.ub In 0.13 inrhr 0,00 Wlsec 0.00 ft'/sec 0.00 0sec 3,318.07 ft3 7,788.09 ft3 ft3 ft3 ft3 ft3 ft3 Loose sand 78,00 inihr 363,00 fmsi 5.00 days 3,00 A 368.00 fmsi 370.80 fmsl 4,467.95 ft' 372.00 fmsi 172.00 ft 7.00 ft 1,190 12 ft2 OK for non -SA waters OK OK OK �NA�,CA i EAL -rr• 032582 - II/11 m irYtK t �\�z l Form SW401-Infiflration Basin-Rev.5 11Apr2011 Parts I. & It. Design Summary, Page 1 of 2 Permit No. ' (to be ptovided by DWQ) -Additional Maximum runoff toeach inlel to the basin?` ' 1'05` eoin OK Length oJvegetative filter for overflow /N/A M OK Distance tostructure ' -:N�� -' 'h OK Distance from surface waters M OK Distoncw0nmwater oopp|y*o||(s) ^ ft OK Separation from impervious soil layer M OK Nalurally uomuhn0soil above ahmx '- ' NU/ M OM Bottom covered ,ith4innfo|eonoandY (YmN) OK Proposed drainage easement provided? �~~ (YmN) OK Cupuruvall runoff atultimate bvild-out? ' Y ' (YurN) OK Bypass provided for larger storms? rY (YorN) 0K P,ot�atmnntdev�epmvi�d -----Catch ----Bas ---= � Form SW401-Infiltration Basin-Rev.5 11Apr2911 Parts 1, & 11. Design Summary, Page 2 of 2 Permit No. (to be provided by oWQ) �� STORMWATER MANAGEMENT PERMIT APPLICATION FORM o� NCDENR 401 CERTIFICATION APPLICATION FORM p s INFILTRATION BASIN SUPPLEMENT This form must be tilted out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. q.PROJECT:INFORMATION a; _ tft* .x 41' Project Name CVS Cameron, NC Contact Person Chris Bostic Phone Number 919-653.2927 Date 302012 - Drainage Area Number 2- OR I!:•DESIGN'INF MATION ..,. �.p : •; •.....`, .. � ' Site Characteristics Drainage area 23,980.65 ftz Impervious area 15,594.57 ft2 Percent impervious 65.03 % Design rainfall depth 1.00 in Peak Flow Calculations 1-yr. 24-hr rainfall depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr discharge Post -development 1-yr, 24-hr discharge Pre/Post 1-yr. 24-hr peak Flow control Storage Volume: Non -SA Waters Minimum design volume required Design volume provided Storage Volume: SA Waters 1.5' runoff volume Pre -development 1-yr, 24-hr runoff volume Post -development 1-yr, 24-hr runoff volume Minimum required volume Volume provided Soils Report Summary Soil type Infiltration rate SHWT elevation Basin Design Parameters Drawdown time Basin side slopes Basin bottom elevation Storage elevation Storage Surface Area Top elevation Basin Bottom Dimensions Basin length Basin width Bottom Surface Area 3.06 in 0.13 inihr -. 0.00 fi3lsec 0.00 ft3lsec 0,00 ft1/sec 1,269.51 , ft' 2,736.29 ft' tt3 ft3 ft3 ff3 ff3 Loose sand 69.00 in/hr 362.00 fmsl 5.00 days 3.00 :1 368,00 fmsl 370.35 fmsl 2,227.98 fl2 371,00 fmsl 105.00 ft 3.00 ft 181.08 ft2 OK for nor -SA waters OK OK OK j2 Form SW401-Infiltration Basin-Rev.5 11Apr2011 Parts I. & A. Design Summary, Page 1 or 2 Permit No. (to be provided by DWQ) Additional Information Maximum runoff to each inlet to the basin? '-0.46 ac-in OK Length of vegetative filter for overflow :ft OK Distance to structure ft OK Distance from surface waters ft OK Distance from water supply well(s) R OK Separation from impervious soil layer OK Naturally occuring soil above shwt >10-'ft OK Bottom covered with 4-in of clean sand? , '-" (Y or N) 0 K Proposed drainage easement provided? (Y or N) OK Capures all runoff at ultimate build -out? 4y:: :..;(Y or N) OK Bypass provided for larger storms? Y: (Y or N) OK Pretreatment device provided �7L-�, Catch Bisinsa6d RioR�4r&, Form SW401-Infiltmtion6asin-Rev.5 11Ap2011 Parts I. & 11. Design Summary, Page 2 of 2