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i <br /> } PUBLIC HEALTH SERVICES <br /> AQUIN <br /> SAN JOAQUIN COUNTY r. i <br /> ENVIRONMENTAL HEALTH DIVISION H :< <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 East Weber Avenue, Third Floor, Stockton, CA 95202 <br /> 2091468-3420 C (D <br /> JAMES GIOTTONINI MAR 2 -3 11997 <br /> PUBLIC WORKS DIRECTOR <br /> CITY OF STOCKTON <br /> 425 N EL DORADO ST <br /> STOCKTON CA 95202 <br /> RE: 110 W SONORA ST SITE: CODE: 1253 <br /> STOCKTON CA <br /> San Joaquin County Public Health Services Environmental Health Division (PHS-EHD) has completed the <br /> review of the quarterly report for the first quarter of 1997 and has the following comments for your <br /> consideration. <br /> Due to the recent rise in the local water table, the screened portion of several of the site monitoring wells <br /> are submerged below the current water table level. Sample results from these wells show current <br /> groundwater quality in the area of the screen interval.'only. The quality of water at the current water table <br /> area is not represented by these samples. However;the vapor extraction wells at the site are screened <br /> such that they may provide this information at this time. Information collected from both these areas can <br /> be used to demonstrate vertical attenuation properties at the site. <br /> Therefore, should water levels warrant, it may be beneficial to collect water samples from selected vapor <br /> extraction wells located near the core of the plume to obtain this additional and useful information. <br /> If you have any questions or wish to discuss this letter in more detail, please contact Linda Turkatte, <br /> Senior REHS, at(209) 468-3441. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> l <br /> Linda A. Turkatte, Senior REHS Margaret agodo, REHS <br /> Site Mitigation Unit Supervisor <br /> LT <br /> c: CVRWQCS, Seth Thayer <br /> c: COS Public Works, Jim Escobar <br /> C., SMITH, William Madison <br /> A Division of San Joaquin County Health Care Services <br />