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1 <br /> ' The annular space surrounding the screened portion was backfilled with No. 2/12 Lonestar <br /> sand (filter pack) to approximately 2 feet above the top of the screened section. An <br /> approximately 1-foot-thick interval of bentonite pellets was added to the annulus above the <br /> ' filter pack and hydrated with approximately 5 gallons of deionized water to mizLn+»e <br /> intrusion of well seal into the filter pack. The remaining annulus was sealed with a neat <br /> cement grout to the surface. A traffic-rated utility box was installed around the top of the <br /> well casing and set in concrete. An expanding, watertight well cap and lock were installed <br /> on top of the well casing to secure the well from surface fluid and tampering. <br /> 1 <br /> 1 <br /> • <br /> 1 <br />