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4 <br /> PUBLIC 1EALTH SERt'ICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION y <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 9 . c ;971il P . <br /> 2091468-3420 <br /> KYLE CHRISTIE MAILED MAY 0 61996 <br /> ARCO PRODUCTS COMPANY <br /> PO BOX 5811 <br /> SAN MATEO CA 94402 <br /> RE: ARCO#5450 SITE CODE: 505663 <br /> 1617 E. Fremont St <br /> Stockton, CA 95203 <br /> San Joaquin County Public Health Services, Environmental Health Division, (PHS-EHD) has evaluated the <br /> recent product line replacement report submitted by Brown and Caldwell and has the following comments. <br /> Petroleum Hydrocarbon impacted soils removed under a work plan approved by PHS-EHD on May 15, <br /> 1995 may have impacted the shallow groundwater beneath the site. In order to verify groundwater <br /> conditions in the west island area at the northern edge (sample T14 area), PHS-EHD will require a <br /> groundwater monitoring well to be installed. <br /> Only one well will be required at this time. A work plan that addresses the well construction and location <br /> should be submitted to PHS-EHD for review. In addition, a well installation permit application along with a <br /> $89 application fee should be submitted with the work pian. <br /> Please submit your plan by June 15, 1996 and be prepared to start well installation procedures by July 1, <br /> 1996. <br /> This well should be sampled on a quarterly basis for Total Petroleum Hydrocarbons as Gasoline and the <br /> BTEX constituents as well as MTBE. Aftertwo consecutive quarterly reports have been received and <br /> evaluated, PHS-EHD will make a decision as to the future need of this well. <br /> Please contact Michael Infuma at(209)468-3454 should you have any questions or to make an <br /> appointment to witness the field activities. <br /> Donna Heran, REHS <br /> Director, Environmental Health Division <br /> Michael Infuma, Senior REHS Margare agorio, REH <br /> Site Mitigation/LOP Unit Lead Senior <br /> MJII <br /> c: Brown and Caldwell -Joel Coffman, 9616 Micron Ave., Suite 600, Sacramento, CA 95827 <br /> A-Division of San Joaquin Countv Health Care Services <br />