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r <br /> ALI <br /> A RfSNA CWT11 p fririrunrnvdfd!501L(ii <br /> ..� Tluaul;h.11rjaliev!Sricrx r. <br /> frir;igrerin,q.l'(-unstrucfiva <br /> 3164 G()lrl ramp{)rive,~Litt'2 15 <br /> Ran(hn Curduv,r,CA()5()7() <br /> 1'hoLe 4916]852-()690 <br /> FAX 0I h)1352-66Mi <br /> WORK PLAN <br /> ENVIRONMENTAL INVESTIGATION <br /> at <br /> Beacon Service Station 492 <br /> 470 North Main Street <br /> Manteca, California <br /> For Ultramar, Inc. <br /> INTRODUCTION <br /> At the request of Ultramar, Inc. (Ultramar)RESNA Industries(RESNA, formerly Applied <br /> GeoSystems) is submitting this work plan for drilling one soil boring and installing one <br /> groundwater monitoring well in the boring at Beacon Service Station No.492 in Manteca, <br /> California. The purpose of this investigation is to assess whether dissolved hydrocarbons are <br /> present downgradient of existing wells and to evaluate the groundwater gradient and <br /> direction of groundwater flow at the site. This work plan describes our procedures and <br /> methods associated with this investigation. <br /> The work will be performed in accordance with the Tri-Regionai Board Staff <br /> Recommendations for preliminary Evaluation and Investigation of Underground Tank Sites <br /> (California Regional Water Quality Control Board.Central Valley Region, 1990);Appendix <br /> A to that document (August 1991); and the Leaking Underground Fuel Tank Manual <br /> (California Leaking Underground Fuel Tank Task Force, 19$9). The Site Mitigation <br /> Acknowledgement/Request For Services Form is included in Appendix A to this work plan. <br /> 861M-7W <br />