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ULI 13 '98 12:21 FROM GETTLER—RYAN INC TO 12094640138 PAGE.002/002 <br /> GETTLER - RYAN INC. - <br /> fyctober 12. 1998 <br /> Ms. Carol Oz <br /> San Joaquin County public Ilealth Services <br /> Faviranmental Health Division <br /> 304 East Weber Avenue,Third Y7oorr <br /> Stockton,California 95201-0388 <br /> RE: Work Flan Addendum,Tanto 76 Branded Facility No, 11193,3202 Wast Hummer Lane,Stockton, <br /> Califon" <br /> Ms. Or.. <br /> At the request of Tosco Marketing Company{baro), Gettler-Ryan Inc. (GR)has prepared this Addendum to our <br /> Work Plan For Soil Sampling FdUawing Product Piping Removal,dated August 21, 1998(work plea)_ In addition <br /> to upgrading the existing product piping,as outlined in the referenced work plan.Tosco will also remove and replace <br /> the existing gasoline underground storage tanks(USTs)at the site. <br /> In addition to proposed sampling oudiued in the work plan, GR will observe the removal of the USTa and collect <br /> compliance samples from the UST excavation in accordance with San Joaquin County Public Health Services <br /> (SJCPHS) guidelines. UST locations or shown on Figure 2 of the work plan- Compliance soil samples will be <br /> collected from the base of the excavation at both ends of each tank. If groundwater is encountered in the UST <br /> excavation,a grab groundwater sample will be collected and soil samples will be collected from the sidewalls above <br /> groundwater. Soil and groundwater samples will be collected,handled, and analyzed acing the methods outlined in <br /> the work plan. <br /> If either subjective field evidence or analytical data indicate soil beneath the site has been impacted by hydrocarbons, <br /> Tosoo may elect to excavate the impacted soil. GR will observe the excavation activities. Confirmation samples will <br /> be collected from die lateral limits of the excavation and sualyses performed in accordance with SJCrM guidelines. <br /> Excavated soil and backfill material will be stockpiled at the site pmding characiedmtiom and disposal per the methods <br /> ou dined in the work plan. <br /> Upon completion of all environmental activities associated with the UST and product piping removal,and receipt of <br /> all data,GR will prepare a report documenting the sampling activities and analytical results. This report will be <br /> prepared far Tosco's use and distribution. <br /> If you have any questions regarding this work plan addendum,please do not hesitate to call we at(925)551-7555. <br /> Sincerely, <br /> Gettkx-Rya,Inc. <br /> Douglas J, lee <br /> project Manager <br /> ec: David J. Camille,Tosco Marketing Company <br /> raraaa2 <br /> 6747 Sierra Court , Suite J Dublin , California 94568 - (925) 551 -7555 <br /> :a Nc TOTAL PAGE-002 w* <br />