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OVERFLOW DRAIN 6 -INCH MIN. ABOVE <br />LOW POINT OF PLANTING AREA, <br />SEE GRADING PLANS FOR LOCATIONS <br />AND RIM ELEVATION (TYP.) <br />CLEANOUT WITH CAP <br />(SET RIM 2" ABOVE FG) <br />BIO -FILTRATION PLANT MATERIALS <br />(SEE LANDSCAPE PLANS FOR SPECS) <br />6" MIN. PONDING <br />FER TO STRUCTURAL <br />PLAN FOR THE <br />REINFORCEM ENT TO <br />FLOW THROUGH THE <br />PLANTERS <br />m <br />Z <br />07 <br />RWL <br />8" FROM TW <br />TO POND <br />T-- --� <br />Z� <br />a- <br />ieiIf�i►cif.•i�•i..i;,. ••iF"� <br />�-�i�4.�'p1410-1,49Mj �5 � 1 <br />sm�= <br />J <br />U <br />m <br />1. PLACEMENT OF BIOTREATMENT SOIL MIX SHALL BE <br />CONSTRUCTED UNDER THE OBSERVATION OF THE SOILS <br />ENGINEER. <br />2. SOIL AT BOTTOM OF RETENTION AREA SHALL HAVE A MINIMUM <br />PERCOLATION RATE OF 5 INCHES/HOUR AND A MAXIMUM RATE <br />OF 10 INCHES/HOUR. <br />3. IN -SITE TESTING SHALL BE PERFORMED BY THE SOILS ENGINEER <br />TO VERIFY PERCOLATION RATE. <br />18" MIN BIO -TREATMENT SOIL <br />MIX (BSM) PER C.3 <br />SPECIFICA71ONS INFILTRATION <br />RATE MIX 5"/ HR MAX 10"( HR <br />PLACE 4"0 MIN. APPROVED <br />COBBLES UNDERLAIN WITH <br />FILTER FABRIC <br />TOP OF WALL <br />2" CLR <br />CONCRETE OR OTHER STRUCTURAL <br />PLANTER WALL WITH WATERPROOF <br />MEMBRANE <br />12" CLASS II PERMEABLE ROCK <br />PER CALTRANS SPECIFICATIONS <br />4"0 PERFORATED UNDERDRAIN <br />(SLOPE AT .050% MIN.) WITH PERFORATIONS <br />DOWN. SEE PLAN FOR CONNECTION TO <br />CATCH BASIN AND FOR INVERT ELEVATION. <br />FLOW THROUGH PLANTER <br />NTS <br />* DIMENSIONS ARE APPROXIMATE, TO BE FIELD VERIFIED. <br />STORMWATER CONTROL PLAN <br />DATE 03/03/2023 <br />E <br />SCALE N.T.S. <br />BROADWAY (OFFICE) <br />REDWOOD CITY CALIFORNIA <br />DR . <br />EA <br />6 KI ER & WRIGHT <br />'JOB All 4075-1 <br />EXHIBIT B <br />w <br />CIVIL ENGINEERS & SURVEYORS, INC. <br />SHEET NO. <br />REV: 4-12-2023 SK <br />3350 Scott Boulevard, Building 22 (408) 727 6665 <br />Santa Clara, California 95054 fax (408) 727 5641 <br />12 OF 22 <br />t:\2014\A14U/b\L)W(;\CIVIL\tXHIBIIS\Storm we ter \broadway plaxa\0FFICE\A14075 - EX - STORMWATER CONTROL PLAN.dwg 3-06-23 01:51:28 PM nkamduang <br />ATTY1AGR.2023.O721Si XX, LLC (Broadway Plaza STMMA) (Page 24 of 55) <br />