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SEE ARCHITECTURAL PLAN FOR <br />WATERPROOFING AND DOWNSPOT <br />DEEPENED <br />FOOTING PER <br />STRUCTURAL —� <br />PLANS <br />ROOF DOWNSPOUT CONNECTED <br />TO PERFORATED DIFFUSER PIPE <br />OVERFLOW DRAIN (SDO), NDS 12"x12" <br />ATRIUM GRATE (#1290) WITH NDS <br />ADAPTER (#1221) <br />SEE DETAIL 2 PER SHEET L4.2 FOR <br />WATER PROOFING INFORMATION — <br />8" SOLID PVC RISER <br />TREATMENT SOIL. SEE SAN <br />MATEO COUNTY "C.3 STORM <br />WATER TECHNICAL GUIDANCE" <br />APPENDIX K FOR SOIL <br />SPECIFICATIONS <br />4" DIA. PERFORATED <br />SLOPED UNDERDRAIN <br />(SLOPE AT 0.59) WITH <br />PERFORATIONS 60' APART <br />ON PIPE CONCRETE PLANTER <br />-----WALLS, SEE <br />LANDSCAPE PLAN <br />ALTRANS CLASS II <br />ERMEABLE ROCK <br />20 MIL VISOUEEN NON—PERMEABLE <br />LINER LOCATION <br />k�� Q + ARROYO GREEN APARTMENTS- 707-777 BRADFORD STREET <br />F STORM WATER OPERATION AND MAINTENANCE <br />YEARS EXHIBIT B (CON'T) <br />ENGINEERS. SURVEYORS. PLANNERS Drawn LP Checked CFG Approved CFG <br />1730 NORTH FIRST STREET., SUITE 600 (woe) oO Job No. 20166073 Date 02/15/2019 Sheet 2 of 4 <br />SAN JOSE, CA 96112 www.bktf.com com <br />