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VARIES WITH NUMBER <br /> OF CONDUITS/PIPING GRAVEL SURFACING RESTORED <br /> WHERE TRENCHED IN EXISTING <br /> ROADWAYS W/MIN.3-INCHES OF <br /> AGGREGATE <br /> T MIN.STRUCTURAL BACKFILLTO <br /> DETECTABLE WARNING TAPE 1' EXISTING GRADE.COMPACTED TO <br /> ABOVE TOP OF PIPE90%OF MAX DRY DENSITY BY <br /> ASTM#D1557 <br /> VERTICAL TRENCH WALLS " <br /> W/SHORING TO CONFORM TO <br /> OSHA REGULATIONS <br /> z <br /> 2"MIN.(TYP) Jlt <br /> PIPE ZONE BEDDING MATERIAL <br /> PER WSDOT 9-03.12(3) <br /> 2"MIN. <br /> PVC ELECTRICAL POWER CONDUIT,NUMBER <br /> (TMP) VARIES,SEE ELECTRIAL DRAWINGS <br /> 2"TO 4"GROUNDWATER PVC COMMUNICATION CONDUIT.NUMBER <br /> CONVEYANCE PIPE VARIES.SEE ELECTRICAL DRAWINGS <br /> J-'�TYPICAL TRENCH CROSS SECTION <br /> C-3,C-4 SCALE:NTS <br /> FROM EGW 192R <br /> 2"WYE CONNECTION <br /> FROM TO TREATMENT <br /> EGW 176 SYSTEM <br /> f <br /> 2"HDPE GROUNDWATER <br /> CONVEYANCE PIPE <br /> tl <br /> 3 (T�EGW192R CONNECTION DETAIL <br /> C-3,C-4 SCALE:NTS <br /> fu <br /> o <br /> 5 <br /> s <br /> o3 <br /> DRAETED BY: JEFFREY I.VALLUZZI J1V 9/30/2020 PROD—NO. <br /> BOEING EVERETT PLANT-POWDER MILL GULCH 025175120.021 <br /> DESIGNED BY: JERED A.NEWCOMB JAN 9/30/2020 LANDAU DOWNGRADIENT PLUME INTERIM ACTION-PHASE 2 <br /> ASSOCIATES EGW192 RELOCATION DATE <br /> CALL 2 WORKING DAYS <br /> REVIEWED eY: PIPER M.ROELEN,P.E. PMR 9/30/2020 SEPTEMBER,2020 <br /> n <br /> PRIOR TO EXCAVATION APPROVED Rv: PIPER M.ROELEN,P.E. PMR 9/30/2020 EVERETT,WASHINGTON SHEET <br /> G 1-800-024-5555 1302ND AVENUE S. 8 OF 14 <br /> DUMP NO WASTE EDMONDS,WASHINGTON 98020 NODATE REVISIONS DESIGNED APPROVED DETAILS DRAWING NO. <br /> . REVIEWED SEAnu. INITIAL DATE (425)778-0907,FAX(425)778-6409 <br /> DRAINS TO STREAM 90%DESIGN DRAWINGS C-5 <br />