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1260 Graphics Drive <br /> Modesto, California <br /> 95351 <br /> 209.579.2221 <br /> Fax 209.579.2225 <br /> A S S O C I A T E SI N PAYMENT C RCEIIW�-n <br /> SANJOAQU <br /> IPU UC HEALTH SERVICES <br /> April 8, 1998 ENVIRONMENTAL HEALTH DIVISION k <br /> 17904 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health <br /> Services,Environmental Health Division <br /> 304 E. Weber Street; Third Floor <br /> Stockton, CA 95202 <br /> Subject: Workplan.for Well Abandonment Activities at 203 South Lincoln Street, Manteca, <br /> California . <br /> I4 <br /> r P <br /> Dear Ms. Lagorio: <br /> ATC Associates has prepared this workplan for the groundwater monitoring well abandonment <br /> activities at the above referenced site(Figure 1). In a conversation with Margaret Lagorio of San <br /> Joaquin County Public Health Services Environmental Health Division (PHS/EHD) on March 26, <br /> 1998, ATC was informed that PHSIEHD had granted site closure. The.location of the monitoring <br /> well to.be abandoned is shown on Figure 2. A permit application and associated fee (check No. 125) t <br /> are attached. <br /> The well willbe abandoned b a C57 licensed drilling company. The well box and top two feet of <br /> Y g <br /> casing will be removed. The well will be abandoned by filling the well casing and filter.pack with <br /> a neat cement/bentonite grout utilizing a.pressure grouting tool.. For protection of the seal at the <br /> land surface, a hole at least two feet in diameter will-be excavated around the outside of the well <br /> casing to.a -depth of approximately two feet below ground-surface. The sealing grout will be <br /> allowed to spill over into the excavation. After the grout is set, the excavation will be filled with <br /> native soil.. Currently, there is one 55=gallon drum stored on site containing soil cuttings from the <br /> well installation. ATC proposes to spread out the soil cuttings on site. Analytical results of the <br /> soil samples were nondetectable.. <br /> All work will be completed in accordance with Smith Technology's Site Safety Plan (SSP) dated <br /> October 1997. Upon completion of abandoning the well, ATC will prepare a brief letter report <br /> describing well,abandonment activities. <br />