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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXWET PONDSTORMWATER CONTROL MEASURE(REFER TO C4.1, C6.1, C8.14)760.61'356.55'622.46'542.6'103'324.54'DoC 1-STORYBRICK BUILDINGN O R T H C A R O L I
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A N C I S S L I N S K Y, I I ISheet Number:Date:Drawn by:Project Number:2020 APR 07FSRevisionsNo.DateNC LICENSE NUMBER C-1652
Timmons Group
Attn: Frank Slinsky, PE
5210 Trinity Road; Suite 102
Raleigh, NC 27607
Phone: 919.866.4505
Fax: 919.859.5663
DPS - NORTH CAROLINA NATIONAL GUARD
MORGANTON REGIONAL READINESS CENTER (NC CONNECT)
SCO#: 16-14394-02B Phase II: New Construction
MILCON Project #: MDT714
5155 Western Avenue, Morganton, NC 286551711-B2020 FEB 1222020 APR 0730SCALE 1"=60'120'60'NAD
8
3 POST-DEVELOPMENT IMPERVIOUS AREA AND WATER QUALITY TREATMENTPROPOSED IMPERVIOUS (BYPASS)ANALYSIS POINT ADRAINAGEAREA(Acres)(CN)Q1Q10POST-DEVELOPMENTA2 (BYPASS)14.208432.8382.30POST-DEVELOPMENTA1 (BMP)POST-DEVELOPMENTA1+A2 (COMBINED)17.139223.1642.8531.3345.69123.31POST-DEVELOPMENT IMPERVIOUS TREATED IN SCMEXISTING IMPERVIOUS TO REMAIN (BYPASS)POST-DEVELOPMENT STORMWATER QUANTITY CONTROLNOTE: POST-DEVELOPMENT FLOW IS LESS THAN PRE-DEVELOPMENT FLOW AT ALL ANALYSIS POINTS.REFER TO CALCULATION BOOKLET FOR ADDITIONAL INFORMATION.Q100142.9247.56186.95ANALYSISPOINT 'A'C4.8POST-DEVELOPMENTSTORMWATERMANAGEMENT PLANA1A2DRAINAGE AREAPOST-DEVELOPMENT STORMWATER QUALITY CONTROLSEE ABOVESEE INSET 'A'INSET 'A'THIS DRAWING IS FOR AGENCY REVIEW ONLY - NOT FOR CONSTRUCTIONPRE-DEVELOPMENT ONSITE IMPERVIOUS SURFACES = 5.41 ± ACRESPOST-DEVELOPMENT ONSITE IMPERVIOUS SURFACES = 16.07 ± ACRES(INCLUDING FUTURE BUILDOUT)IMPERVIOUS AREA REQUIRED TO BE TREATED = 10.66 ± ACRESIMPERVIOUS AREA TO BE TREATED = 13.09 ± ACRES (WET DETENTION)IMPERVIOUS AREA OVERTREATED = 2.43 ± ACRESON-SITE BUILDINGSDRAINAGE AREA BASIN INFORMATIONON-SITE STREETSON-SITE PARKINGON-SITE SIDEWALKSFUTURETOTAL IMPERVIOUSTOTAL DRAINAGE AREA64,2670465,30633,3897,048570,010746,327DRAINAGE AREA ABUA TYPE(SF)(SF)(SF)(SF)(SF)(SF)(SF)64,26710,194530,61233,38961,548700,0101,498,464PROJECT AREA*THERE ARE NO WETLANDS ON-SITE.ANALYSISPOINT 'C'ANALYSISPOINT 'B'ANALYSIS POINT BANALYSIS POINT CPOST-DEVELOPMENTB1 (BYPASS)2.69741.594.999.47POST-DEVELOPMENTC1 (BYPASS)3.38741.685.2910.07B1C1