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h� <br /> bentonite Sand was then placed on top of the bentonite to reach 1 foot above the top of <br /> the screen of the shallow well.(VW-5S) followed by 1 foot of bentonite seal <br /> Cement grout containing 5 percent bentonite or concrete was placed above the bentonite <br /> seal to the ground surface A concrete traffic-rated vault box was installed over the <br /> well(s) A watertight locking cap was installed over the top of the well casing Well <br /> detail information is presented in Appendix B <br /> CP lE 1ARC0105481REPORT510548P201 DOC-48\Isg 1 <br /> A-3 <br />