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FINISHED GRADE, SEE <br />PLANS& <br />SPECIFICATIONS <br />PIPE AS REQUIRED <br />- <br />SEE TABLE 3 FOR RISER <br />- <br />(OVERFLOW) HEIGHT <br />- <br />ABOVE DETENTION PIPE <br />FLOW <br />-- <br />INVERT ELEVATOR <br />i - <br />SECURE WITH8 <br />18"MIN <br />- <br />ALUMINUM <br />SUMP BELOW <br />STRAP. BOLT TC <br />OUTLET PIPE <br />.........1r.m. <br />ORIFICE SIZE PER TABLE 3, <br />SEE NOTE 5 <br />SECTION A -A <br />NI Z <br />AI-j SAND COLLAR <br />ORGROUT- <br />DETENTION PIPE <br />LENGTH PERTABLE3 <br />ELEVATION <br />EVERETT <br />0 PUBLIC WORK$ <br />TYPE 1L CB FOR 18" OR <br />SMALLER DETENTION <br />PIPE OTHERWISE USE <br />TYPE 2 CB <br />NOTES <br />1, DETENTION STRUCTURE SHALL BE FABRICATED <br />FROM ONE OF THE FOLLOWING: <br />A. CORRUGATED ALUMINUM PIPE, 12 GAUGE <br />MINIMUM. <br />B. HIGH DENSITY POLYETHYLENE PIPE. <br />C. CORRUGATED POLYETHYLENE STORM <br />SEWER PIPE. <br />U STEEL RIB REINFORCED POLYETHYLENE PIPE. <br />2. ANNUAL INSPECTIONS AND CLEANING <br />REQUIRED BY OWNER TO ENSURE PROPER <br />OPERATION OF DETENTIONSYSTEM. <br />3. W=MAXIMUM WIDTH OF TRENCH FOR <br />PIPE/VAULT PER MANUFACTURER <br />INSTALLATION INSTRUCTIONS. <br />C. COMPACT IN 8" LIFTS TO BOX MAX DENSITY. <br />S. ORIFICE SHALL BE INSTALLED ON REMOVABLE <br />CAP TO ALLOW FOR MAINTENANCE. <br />6, PROVIDE FLOATABLE MATERIAL SEPARATOR <br />WITH GAS TRAP DOWNSTREAM OF FLOW <br />CONTROL STRUCTURE, PRIOR TO DISCHARGE <br />TO THE SEWER. <br />UNDERGROUND <br />DETENTION SYSTEM <br />FOR SMALL PROJECT <br />0W <br />