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Ms. Amy Terrell <br /> Page 2 of 2 <br /> above the floor of the excavation On June 11, WWT placed 2 inch diameter PVC tremie pipe in <br /> the hole to near total depth. Detonating cord was run in the hole to total depth with high explosive <br /> booster charges placed every 10 feet from TD to 8 feet below casing collar. A 10.3 sack <br /> sand/cement grout slurry was then pumped into the well through the tremie equipment in one <br /> continuous operation until the well was full. Water displaced to the surface by grouting was <br /> pumped from the excavation to the concrete containment area north of the well. This contahunent <br /> area was formerly occupied by liquid bulk fertilizer storage tanks. Sheets of plywood were placed <br /> over the well excavation in order to contain any grout ejected from the well when the charge was <br /> detonated. <br /> After the charge was detonated, the depth to grout was measured at 29 feet below the casing collar. <br /> More grout was added to the borehole until completely Rill and the grout was allowed to spill over <br /> the casing to form a mushroom cap. On June 12, after the grout had set, native soil was used to <br /> backfill the excavation to grade. <br /> Please contact Ground Zero at your earliest convenience if you have any questions or comments <br /> regarding this report. <br /> Respectfully, S�ONAL SFO <br /> Grouuid Zero Analysis lc. <br /> o c <br /> a� GRECORYP. <br /> STAN. <br /> regory P. Stahl, PG 5023 <br /> CA Certified Hydrogeologist No. 264OF C <br /> Attachments: Figures 1 and 2 <br /> RWQCB Well Destruction Workplan Approval Letter <br /> EHD Well Destruction Permit/Inspection Report <br /> DWR Water Well Drillers Report <br /> cc: Mr. Jeff Hawkins, Esq. <br /> Mr. Allan Fetters, RF Land, Inc. <br /> Ms. Adrienne Ellsaesser, EHD <br /> G:\GROUNDZE\RIPONFARM\PROD WELL\Well destructionRept.do c <br />