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HomeMy WebLinkAbout11/18/2022 - Detention Basin, Grading & Drainage Plan - - \\vhb.corn\gbl\prqj\Wat-LD\1 1625.25 Butler Building\cad\ld\Planset\Construction\Sketches\SKC-003-Detention Basin\SKC-003 GD.dwg -'I N BASIN CUMULAT IVE STORAGE DETENTICI PRE'11TOUSLY PROPOSED;1.293 CIP TIE TO EXISTING GRADE, NEWLY PROPOSED:,1.294%--,-F ................... .. ..........a, g,�,% 2. 3:1 SLOPE MAX L)U I 114/ ET v. DO NOT REMOVE ANY TREES FROM K �'D 1 111111111.........C"IlE PREVIOUSLY PROPOSED BASIN BOUNDARY 29.5' EXPANDED LIMIT OF WORK 4- 3.5. PREVIOUSLY PROPOSED LIMIT OF WORK CLEANOUT TIE TO EXISTING GRADE, rn c',j FES INV=243.8 3:1 SLOPE MAX 7: Sll TSOCK AND SILT DRIP STRIP 244.5 N%N FENCE BARRIER(TYP.) 244.8 244 INFILTRATION BASIN 4%Z BERM FOR 100-YR FREEBOARD 244. ?1.......... 24-3 TOP OF BASIN=243.91 1 / t X242.6 OVERFLOW WEIR=243.4 244�- - ------ INSTALL YELLOW"CAUTION" *-P-ERF-PVC- 244.6 BOTTOM OF BASIN=242.6 26.8 TAPE ALONG THE LIMIT OF 244.6 CLEARING/GRADING PRIOR 12441 244. 242.6 x TO DISTURBANCE IN IN PROPOSEDti 242.&� �x STORAGE BLD Uj 4�. IN '-2 44.6 244.6 242.6 GTD OVERFLOW STON x ............. 243.4 1\SWALE 0% .............. EN D- 0 D EN x END 1% 244.6 43.4 - ------ ---- :0 42 \NVA 4 X, \\: ,X ry 245 244.95��� \jVV1-1Q9k l 102 -102 \NP -107 1 1" \NFI SILTSOCK BARRIER INV=2 290 101 T 244.75 ti 6 P 5 x 49 24 244,1 2445 x 6"D MUM Mona 24'01 ----- 43.7(E4 ------ 244.7,(EX) ----------- UNEW Mom woom .................... ----- ............. Mona MONO 12 .............. .................................................. ...................... ...... ......... -77-7....................................................................... ---- 245 ..............-7,-7-1111 ............... ...................... ......... ................... qe ......... .............. 4 245.2(EX 2,\,,,5."E�) 4 ........ ----- ..... ...... .. .......................',,\............. 7 7,,' ..........`,,� .........7 77777",i....... ...... .........7. ......... ...... ......... ..... /......... /. .......... .......... .......... .......... 12'5 1 24 (EX) ............. -J, ........ .......... ......... ............ 101 TD 5 2(0 RIM=244.00 %(, x 00,o INV=243.00 OUT APPROXIMATE ...... ..... LAYDOWN AND (EX) .............. STOCKPILE AREA �,�§.. .......... .......... INLET PROTECTION SET TRENCH DRAIN AT -------------- FOR PROPOSED 0.5%SLOPE PITCHING CH DRAIN AFTER 0, TRENCH mom AWAY FROM BUILDING INSTALLATION "41Z TO THE BASIN 1111111111111111......... -Z----- N'oVhb Detention Basin SKC-003 Grading and Drainage Plan 0 10 20 40 Feet MAC Storage Building November 18,2022 North Andover,MA