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1117 Lone Palm Avenue, Suite $ <br /> Modesto, California 95351 <br /> CA www.atc-enviro.com <br /> 209.579.2221 <br /> Fax 209.579.2225 <br /> A S S O C I A T E S I N C <br /> July 31, 2000 <br /> 54.62598.0002 <br /> Mr. Harlin Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E. Weber Avenue, 3rd Floor <br /> Stockton, CA 95202 <br /> Subject: Workplan for Well Abandonment Activities at BJJ Company, Inc. located at 2431 <br /> East Mariposa Road, Stockton <br /> Dear Mr. Knoll: <br /> ATC Associates has prepared this workplan on behalf of BJJ. Company, Inc., for groundwater <br /> monitoring well abandonment activities at the above referenced site (Figure 1). In a conversation <br /> with Harlin Knoll San Joaquin.County Public Health Services Environmental Health Division <br /> (PHS/EHD) on July 27, 2000, ATC was informed that the Regional Water Quality Control Board <br /> had concurred with PHS/EHD's site closure request. The locations of the monitoring wells to be <br /> abandoned are shown on Figure 2. A completed permit application and associated fee from Clark i <br /> Well, Inc. are attached along with soil boring/well construction logs. <br /> The wells will be abandoned by a Clark Well, Inc., a C57 licensed drilling company. The well <br /> box and top two and one half feet of casing will be removed. The well will be abandoned by <br /> filling the well casing and filter pack with a neat cement/bentonite grout utilizing pressure <br /> grouting methodology. For protection of the seal at the land surface, a hole at least three feet in <br /> diameter will.be excavated around the outside of the well casing.to a.depth of approximately two � <br /> feet below ground surface. The sealing grout will be allowed to spill over into the open <br /> excavation. The remaining excavation will be backfilled with neat cement covered by gravel or <br /> asphalt patching to restore the site's original appearance. <br /> Fieldwork is currently scheduled to occur on Thursday, August 3, 2000. All work will be <br /> completed in accordance with the site's existing Site Safety Plan (SSP) dated January 2000 and <br /> on file with PHS/EHD. Upon completion.of abandoning the wells, ATC will prepare a brief <br /> letter report summarizing well abandonment activities. <br />