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k` i KLEINFELDER <br /> An employxe owned company <br /> File No. 20-4535-O1.REP <br /> June 3, 2004 <br /> Mr. Rick Enos <br /> Delicato Vineyards <br /> 12001 South Highway 99 <br /> Manteca, California 95336 <br /> RE: LETTER <br /> ABANDONMENT AND REPLACEMENT OF MW-2 <br /> DELICATO FAMILY VINEYARDS <br /> MANTECA, CALIFORNIA <br /> Dear Mr. Enos: <br /> In accordance with Delicato Family Vineyards (Delicato) request, we have prepared this <br /> correspondence to be forwarded to the Regional Water Quality Control Board (RWQCB) to <br /> address the abandonment and replacement of MW-2. It is our opinion that MW-2, located north <br /> of the southern wastewater check, should be abandoned due to damage, which precludes the <br /> usefulness of the well as a viable monitoring well. MW-2 had become damaged by heavy <br /> equipment operating in the area. In an attempt to complete the well abandonment and <br /> replacement before the end of the second quarter, Delicato respectfully requests that these tasks <br /> be allowed to be undertaken without the usual preparation of a workplan and review process, but <br /> instead use this letter as a record for requesting abandonment and replacement. The replacement <br /> and abandonment of MW-2 will be detailed in the subsequent quarterly groundwater monitoring <br /> report. The monitoring well will be abandoned in accordance with the San Joaquin County <br /> Environmental Health Department(EHD)requirements. <br /> An EHD well destruction permit will be prepared prior to commencing field work. The <br /> monitoring well will be over-drilled with a drilling rig equipped with a guide bit positioned over <br /> the existing well casing. The total depth of the over-drilled boring will be approximately 40 feet <br /> below the ground surface. (The existing total depth of MW-2 is approximately 40-feet). To the <br /> furthest extent possible, the PVC well casing will be removed form the borehole. The boring <br /> will be grouted to the surface with a neat cement mixture via tremmie pipe to the surface. The <br /> grout will be pumped through the tremmie pipe to the bottom of the boring and allowed to fill the <br /> boring from the bottom-up and flow to the surface. <br /> A replacement well will be installed near the abandoned well location. The new well will be <br /> drilled and installed in a similar fashion as the original well (reference Kleinfelder's workplan for <br /> the installation of the original MW-2, dated February 13, 2001). <br /> C20-4535-01.REP/ST04L311 Pagel of 3 <br /> Copyright 2004,Kleinfelder,Inc. June 3,2004 <br /> KLEINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax <br />