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PUBL10,fAEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201- 8 <br /> (209) 468-3420 <br /> HENRY CECCHINI <br /> CECCHINI CECCHINI & GIOVANNONI <br /> 3000 E EIGHTEENTH STREET <br /> ANTIOCH CA 94509 <br /> RE: DELTA TRUCKformer <br /> ( ) SITE CODE: 1800 <br /> 3535 E. Cherokee Rd. <br /> Stockton, CA 95205 <br /> PHS-EHD has reviewed the "Addendum Workplan for Additional Site Investigation and Groundwater <br /> Monitoring" submitted by ESE on February 13, 1995 and has the following comments. <br /> Well construction proposed lists the screened interval at 65 to 105 feet below ground surface. Only twenty feet <br /> (20) of factory slotted screened interval is to be used in construction of monitoring wells. Previously recorded <br /> high and low groundwater depths are the results of extreme conditions and wells placed now are not intended to <br /> provide for these conditions. <br /> PHS-EHD recommends that the depths below ground surface for the screened interval be such that approximately <br /> one-third be above the current depth to groundwater and two-thirds below. This would provide for a well that <br /> would only be about 90' deep, and not the 105' proposed. Please adjust-your construction proposal to reflect <br /> this maximum screened interval and position so that future sampling/monitoring events may be considered as an <br /> accurate representation of the groundwater beneath your site. <br /> The legend on Figure 1 included within the addendum noted an "optional monitoring well" but no location of <br /> this well could be found on the map. Without a description and location of this well, PHS-EHD will not allow <br /> its placement. <br /> PHS-EHD hereby approves the workplan with these changes and will issue the boring permit as soon as the <br /> application and $89.00 fee are received and processed. <br /> If you have any questions, please contact Michael Infurna at (209)468-3454. <br /> I <br /> Donna Heran, REHS, Director <br /> Enviro ental Health Division <br /> Michael Inform, Senior REHS Diane M. Hinson, REHS <br /> I <br /> Site Mitigation Unit Supervisor <br /> MI <br /> c: ESE - Susan Wickham,RG <br /> c: SWRCB - L. Bracco <br /> c: CVRWQCB - E. Thayer <br /> A Division of San Joaquin County Health Care Services <br />