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• DDJC&y OU I Pesticide Remediation <br /> Groundwater Extr ion Well Installation Work Plan <br /> WELL CASING <br /> GROUND SURFACE <br /> P—iii—iii—iT—iii—iii—:•:•:•:•: —iTi—iTi—iii—iii—i i�-1 <br /> STAINLESS STEEL 9"-3/4 CRUSHED ROCK <br /> CENTRALIZERS <br /> SPACED EACH <br /> 40 FEET OF CASING <br /> FROM TOP OF SCREEN <br /> SANITARY SEAL <br /> WELL CASING OF TYPE [AND II <br /> 6" SCHEDULE 40 PVC PORTLAND CEMENT WITH <br /> APPROXIMATELY 3 PERCENT <br /> BENTONITE POWDER <br /> BENTONITE SEAL <br /> 2-3 FEET THICK <br /> HYDRATED, PELLETS <br /> SAND BRIDGE <br /> -3 FEET THICK <br /> STAINLESS STEEL WASHED, BAGGED, •30 <br /> CENTRALIZERS <br /> TOP AND BOTTOM <br /> OF SCREEN <br /> WEELIDS REE FILTER PACK <br /> 6" STAINLESS STEEL EMPLACED FROM TOTAL <br /> FLUSH THREADED DEPTH TO 1-2 FEET ABOVE <br /> 010 OR .020 SLOT THE TOP OF SCREEN <br /> (TO BE DETERMINED WASHED, BAGGED, ROUNDED <br /> BY LITHOLOGY) SIZE DEPENDENT UPON <br /> WELL CAP SCREEN SLOT SIZE <br /> 6" STAINLESS STEEL <br /> FLUSH THREADED <br /> NOT TO SCALE <br /> TRACY \ 20010613 \ 010613_WELL-CONST.DGN VRL <br /> Figure 3-1. Typical Extraction Well <br /> KA02237\01J J_Pest-RemVna1\GW-EW-WrkP1n.dn 6 June 2002 <br />