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BIO -FILTRATION PLANT MATERIALS <br />(SEE LANDSCAPE PLANS FOR SPECS) <br />6" MIN PONDI <br />CLEANOUT WITH CAP AT FINISHED GRADE <br />OVERFLOW AREA DRAIN 6 -INCH MIN. ABOVE <br />LOW POINT OF PLANTING AREA, <br />SEE GRADING PLANS FOR LOCATIONS <br />AND RIM ELEVATION (TYP.) <br />12" MIN OF CLASS II PERMEABLE <br />ROCK PER CALTRANS SPECIFICATIONS. <br />LINE SIDES AND BOTTOM OF <br />TRENCH EXCAVATION WITH <br />20 -MIL PVC DEEPROOT <br />WATER BARRIER TO REDUCE <br />WATER INFILTRATION <br />SURFACE AREA OF THE BIOTREATMENT SOIL <br />SHALL EQUAL 4% OF THE AREA OF THE SITE <br />THAT DRAINS TO TREATMENT MEASURE, <br />UNLESS SIZING CALCULATIONS ARE SUBMITTED <br />DEMONSTRATING THAT PROVISION C.3 <br />REQUIREMENTS ARE MET USING A SMALLER <br />SURFACE AREA. <br />NATIVE SOIL <br />DO NOT COMPACT <br />STORM DRAIN OUTLET <br />INVERT VARIES <br />PERFORATED OR SLOTTED SLOPED <br />UNDERDRAIN (SLOPE AT 0.50% MIN) <br />WITH PERFORATIONS DOWN. SEE <br />UTILITY PLAN FOR CONNECTION TO <br />C.B. & FOR INVERT ELEVATION <br />BIOTREATMENT POND (LINED) SECTION VIEW <br />NOT TO SCALE <br />* DIMENSIONS ARE APPROXIMATE, TO BE FIELD VERIFIED. <br />STORMWATER CONTROL PLAN <br />DATE <br />4 <br />r»v;:-": �'. eL c�µ*•y ::'. _ .. ..r.7'oy/. ....: <br />SCALE <br />y.'.i <br />:y- <br />y <br />DR. BY <br />-... _...-_.'f�".1.�1J�:'�."�-�1i44� <br />REDWOOD CITY CALIFORNIA <br />UNDERDRAIN CLEANOUT <br />BIO -TREATMENT SOIL <br />---..� �` • <br />I: '�: WITH RIM TO FIN. GRADE. <br />MIX (BSM) <br />=;,< <br />:.: <br />SEE UTILITY PLAN FOR <br />PER C.3 <br />„rz;; <br />�:^� ��;I <br />•: LOCATION AND INVERT. <br />SPECIFICATIONS. <br />w <br />4 4 <br />INFILTRATION RATE <br />Santa Clara, California 95054 fax (408) 727 5641 <br />OF <br />MIN 5"/HR MAX 10"/HR <br />12" MIN OF CLASS II PERMEABLE <br />ROCK PER CALTRANS SPECIFICATIONS. <br />LINE SIDES AND BOTTOM OF <br />TRENCH EXCAVATION WITH <br />20 -MIL PVC DEEPROOT <br />WATER BARRIER TO REDUCE <br />WATER INFILTRATION <br />SURFACE AREA OF THE BIOTREATMENT SOIL <br />SHALL EQUAL 4% OF THE AREA OF THE SITE <br />THAT DRAINS TO TREATMENT MEASURE, <br />UNLESS SIZING CALCULATIONS ARE SUBMITTED <br />DEMONSTRATING THAT PROVISION C.3 <br />REQUIREMENTS ARE MET USING A SMALLER <br />SURFACE AREA. <br />NATIVE SOIL <br />DO NOT COMPACT <br />STORM DRAIN OUTLET <br />INVERT VARIES <br />PERFORATED OR SLOTTED SLOPED <br />UNDERDRAIN (SLOPE AT 0.50% MIN) <br />WITH PERFORATIONS DOWN. SEE <br />UTILITY PLAN FOR CONNECTION TO <br />C.B. & FOR INVERT ELEVATION <br />BIOTREATMENT POND (LINED) SECTION VIEW <br />NOT TO SCALE <br />* DIMENSIONS ARE APPROXIMATE, TO BE FIELD VERIFIED. <br />STORMWATER CONTROL PLAN <br />DATE <br />05/19/2020 <br />SCALE <br />N.T.S. <br />BROADWAY <br />DR. BY <br />REDWOOD CITY CALIFORNIA <br />EA <br />k KI ER & WRIGHT <br />JOB <br />A14075-2 <br />EXHIBIT B <br />w <br />CIVIL ENGINEERS & SURVEYORS, INC. <br />SHEET NO. <br />3350 Scott Boulevard, Building 22 (408) 727 6665 <br />w <br />4 4 <br />Santa Clara, California 95054 fax (408) 727 5641 <br />OF <br />ATTY/AGR.2020.083/Broadway Plaza - Bay Block (Page 16 of 19) <br />