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Parking Lot Detailpuoisi 6upaod ao}—o!E 0 0 D-� cn 171 OIOZ '1d3S CURB STOP SLOPE PAVEMENT// AGGREGATE BASE //\\//i//i\/// 3/4"0 (OR LARGER) GRAVEL, TYP. /, 2" THICK MULCH MSD TYPE 4 GEOTEXTILE FABRIC (SIDES ONLY) VARIES 18" MAX. PONDING WQ STORM 36" MAX. PONDING GREATER STORMS 2 i1 /\\/\/\ 4"0 SCHEDULE 40 PVC OR SDR 35 PERFORATED PIPE, 3/8"0 HOLES, TWO SIDES, FACING DOWN, 2" MIN. OFF BOTTOM TYPICAL SECTION SCALE: 1 "=20' NOTCHED CURB SLOPE PAVEMENT , y—T AGGREGATE BASE' 30" (MIN.) THICK BIORETENTION \SOIL MEDIA ,1\\ MSD TYPE 4 GEOTEXTILE •/2\ FABRIC (SIDES ONLY) /1\, NOTES: (1) SEE MSD LANDSCAPE GUIDE FOR BIORETENTION SOIL SPECIFICATIONS. (2) AS SHOWN, MAXIMUM DRAINAGE AREA = 0.5 ACRES. ADDITIONAL PRETREATMENT (FOREBAY OR VERTICAL SAND LAYER & COBBLE DIAPHRAGM) REQUIRED FOR LARGER DRAINAGE AREAS. (3) VEGETATION NOT SHOWN FOR CLARITY. SEE MSD LANDSCAPE GUIDE FOR MULCH & SUGGESTED PLANT LIST. (4) ALL SAND & GRAVEL TO BE NATURAL, UNCRUSHED. (5) SLOPES SHOWN ARE MAXIMUM. 12" WIDE BENCHES ARE ALLOWED IN LIEU OF 1:1 SUBGRADE SIDE SLOPE. (6) MUST BE PROVIDED WITH OVERFLOW INLET OR OVERLAND FLOW PATH. 6" THICK SAND (ASTM C-33 FINE AGGREGATE) 6" THICK 3/8"0 GRAVEL (ASTM C-33 NO. 8) 6" THICK 3/4"0 GRAVEL (ASTM C-33 NO. 6 OR 67) EXISTING SOIL SUBGRADE, TILLED OR "RIPPED" 12" DEEP BEFORE BACKFILLING