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January 3, 2001 <br /> 52439 1 <br /> Margaret Lagorio, Supervising REHS <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> Page 2 <br /> surrounding the former 210,000 gallon UST where no contaminated soil was present. The wells will be <br /> nder the direction of a Harding ESE geologist or engineer. <br /> destroyed by astate-licensed C57 well driller.0 <br /> i The wells will be sounded to insure that no obstructions are present to interfere with filling or sealing. The <br /> Wells will then be pressure grouted with a tremie pipe from the bottom up,to a depth of approximately five <br /> feet bgs. This 5-foot depth(rather than 3 feet) is used because impending construction of plant facilities in <br /> this location that could impact the shallower depth. The grout will consist of neat cement mix of less that 6 <br /> gallons of clean water per sack of cement, and less than five percent powdered bentonite. The top of the 2- <br /> inch diameter well casing will be drilled out with an 18-inch diameter solid flight auger to a depth of <br /> approximately 5 feet bgs. Cuttings will be removed from the bottom of the over-bored hole. Additional grout <br /> Will be added to fill the settled grout in the casing and allowed to fill the bottom foot of the excavation. The <br /> remaining portion of the excavation will be backfilled with native soil cuttings. <br /> The well destruction procedures will be performed by Woodward Drilling Company of Rio Vista, California <br /> a'C-57 licensed(710079)well driller. The well destruction is tentatively scheduled for the month of January <br /> 2001, and PHS/EHD will be notified in writing at least 48 hours in advance. Enclosed are the completed <br /> application for well destruction, $60.00 in permit fees, and site location maps showing the,Site and well <br /> locations. If there are any questions,please contact either of the undersigned. <br /> Yours very truly, <br /> GE <br /> Harding ESE,Inc �C�` �• G'�u, <br /> No.6046 F <br /> r'r <br /> Gary D. Haeck,Ph.D.,R.G. XP 6X0 <br /> Associate Geologist OF CAS-�F��ti <br /> Grego siano,R.G. <br /> Managi rin ' al Geologist <br /> Attachments: Plate 1 - Site Vicinity Map <br /> Plate 2 - Site Plan <br /> Well Destruction Permit Application <br /> Check for$60.00 in Permit Fees <br /> cc: Mark Vincent—Newark Sierra Paperboard Corporation. <br /> Mary Hartzel-RWQCB <br /> 4 <br /> \\SAC-MAIN\VOL 1\PROJECTS\50000\52439\WP\52439j36.doc <br /> j <br /> AA <br /> Harding ESE <br /> ±, A MACTEC COMPANY <br /> 1 <br />