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. Mr Harlin Knoll July 30, 1999 Page 2 The three wells were constructed with 10-feet of two-inch diameter polyvinyl chloride (PVC)well screen and two-inch diameter PVC blank casing Based on the actual well depths, the well casing volume was calculated to ensure that a sufficient volume of grout was pumped into each well to fill the entire casing, penetrate the sand pack, and invade the formation soils Approximately 27 4 to 35 3 gallons of grout were pumped into each well These actual grout volumes exceeded the well volumes by 19 9 to 27 5 gallons, confirming successful penetration of the sand pack and formation soils The well construction details and grout volume calculations are summarized in the attached table The groundwater standing in the well (approximately 3 0 to 4 0 gallons per well) was displaced by the grout out the top of the well and contained in five-gallon buckets, screened olfactorily for petroleum odor, and removed from the site by V&W Drilling V&W Drilling removed each of the wellhead street boxes and restored the surface pavement with ready-mix concrete, finished to grade Under separate cover, Ramage Environmental has sent to the California Department of Water Resources, Well Completion Reports recording the abandonment of the wells Copies of the Well Completion Reports are attached iThank you for your assistance on this project If you have questions or need any additional information, please call me at (916) 354-3250 - ' O GFp� Sincerely, RAMAGE ENVIRONMENTAL © G' ,�. Y1 * No. 5856r Joseph Ramage, R G Exp. 4W100 Project Geologist qpF QF CA`1�� Attachments Figure 1 (Site Location Map) and Figure 2 (Site Plan) Table, Well Construction Details and Grout Volume Calculations Department of Water Resources Well Completion Reports CC Mr Anthony Varni, Esq - Varni, Fraser, Hartwell & Rodgers Mr Mark List—Central Valley Regional Water Quality Control Board