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August 8, 1995 <br /> Page 3 <br /> 25775 Patterson Pass Road, Tracy ARCO Facility #6100 <br /> PHSIEHD contact - Margaret Lagorio <br /> Remediation of this site will be postponed until equipment from another site in San Joaquin <br /> County becomes available. ! <br /> I. <br /> With the off site drilling and installation of VW18 - VW20, ARCO has determined that the soil <br /> contamination has been delineated. A report will be submitted that defines the extent of the <br /> contamination and discusses remedial alternatives. Another vapor extraction test may be <br /> performed to further investigate this alternative since.the previous test was performed in <br /> October 1991. <br /> 501 W. Kettleman Lane, Lodi <br /> ARCO Facility #434 <br /> PHSIEHD contact - Margaret Lagorio <br /> The vapor extraction system is currently pulling 25 cubic feet per minute and emitting less than <br /> one pound of hydrocarbons per day. The San Joaquin Valley Unified Air Pollution Control <br /> District permit allows up to two pounds of hydrocarbon emission per day so the use of the <br /> biofilter may be discontinued. Groundwater sample results from all the monitoring wells are i <br /> currently non-detect. <br /> Brown and Caldwell presented an aerial photo obtained through Cal-Trans of the intersection <br /> of Kettleman Lane and Hutchins Street taken in March 1989 in order to identify the location of <br /> monitoring well 6. It was discussed that Boston Market should be responsible for locating and <br /> destroying this well since they improperly abandoned it during the construction of their facility. <br /> The quarterly report dated May 15, 4995, contained field data sheets which indicated the grout <br /> on monitoring well 2 had fallen approximately 9 feet. Brown and Caldwell stated they would <br /> investigate this and make the necessary repairs. <br /> Summary <br /> The meeting allowed for continued communication between all parties and for continued progress at <br /> the sites. The next meeting to discuss site progress was scheduled for October 30, 1995 at 2:00 p.m. <br /> at the office of PHSIEHD. <br /> If you disagree with this summary or have any questions, please contact me at (209) 468--3452. <br /> Donna Heran, REHS, Director <br /> i' <br /> Environmental Health Division <br /> Diane M. Hinson, REHS <br /> Supervisor <br /> r <br /> c: Elizabeth Thayer, CVRWQCB <br /> c: Jay Johnson, EMCON <br /> c: Ron Zurlinden, B&C <br /> I <br /> 'w° <br />