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PUBIt HEALTH SEAICES <br />SAN JOAQUIN COUNTY <br />JOG! KHANNA M.D., M.P.H. <br />Health Officer <br />P.O. Box 2009 • (1601 East HazeIton Avenue) • Stockton, California 95201 <br />(209) 468-3400 <br />September 18, 1990 <br />Donna Gardner <br />Donna Gardner Property <br />1206 W. Struck <br />Orange, CA 92667 <br />RE: Donna Gardner Property <br />26080 Thornton Rd. <br />Thornton, CA 95686 <br />Ceh <br />IN REPLY REFER TO SITE CODE: 1864 <br />Contractor #: 39000 <br />We have reviewed the Preliminary Report and Work Plan dated August <br />7, 1990, submitted by Waterwork for the above referenced site. <br />Waterwork proposes to re-excavate contaminated soils and install <br />three monitoring wells to assess potential groundwater <br />contamination. <br />Re-excavation can be beneficial for immediate source reduction, <br />however, we recommend that the site be adequately characterized <br />prior to source removal. Soil borings should be proposed in order <br />to define the extent of soil contamination. In addition, the <br />possible migration of contamination toward the Thornton municipal <br />well #2, should be addressed. <br />We request that an addendum to the work plan and the permit <br />application for drilling the monitoring wells and soil borings be <br />submitted by October 15, 1990. A problem assessment report should <br />be submitted to this office by December 3, 1990. <br />Should you have any questions, please contact Eleanor Ratliff, <br />REHS, at (209) 468-3454. <br />Jogi Khanna, M.D., M.P.H. <br />Health Officer <br />Laurie A. Cotulla, REHS, Program Manager <br />Environmental Health Division <br />LAC/ER:nr <br />c: Waterwork <br />A Division of San Joaquin County Health Care Services