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PUBLIC HEALTH SERVICES �O1`4Ul N;C <br /> .o <br /> SAN JOAQUIN COUNTY i <br /> P: .d <br /> JOGI KHANNA M.D.,M.P.H. w, <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton, California 95201 �4tiFapN�a• <br /> (209) 468-3400 <br /> CHUCK NICHOLS <br /> cc <br /> USA <br /> PETROLEUM <br /> PO BOX 1839 SEP 2 91992- <br /> SANTA MONICA CA 90406 <br /> RE: USA Petroleum #110 SITE CODE: 1669 <br /> 2132 Mariposa Road <br /> Stockton, Ca <br /> The installation of three replacement monitoring wells was <br /> recently completed at the above mentioned site under the guidance <br /> of Park Environmental Corporation. This letter is to appraise <br /> you of the problems San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS/EHD) encountered during this <br /> recent field activity. <br /> The geologist on site was unaware of PHS/EHD's comments on the <br /> workplan submitted by Park Environmental, documented in a letter <br /> dated June 17 , 1992, addressed to you with a copy sent to Park <br /> Environmental. <br /> As a result, the geologist was prepared to grout the annular <br /> space of the wells with bentonite pellets, a practice not allowed <br /> in San Joaquin County. The geologist was extremely uncooperative <br /> and verbally abusive when asked to comply with the grout <br /> specifications detailed in the workplan and clarified in the June <br /> 17th comment letter from this office. <br /> The geologist on site was also unaware of the recommendation in <br /> the June 17th letter for a maximum screen length of 20 feet. <br /> When informed of this in the field, he appeared willing to <br /> comply. After the wells were completed, PHS/EHD learned that the <br /> wells were in fact constructed with 30 feet of screened interval. <br /> For the final completion of the wells, traffic boxes should be <br /> set in a grout that forms a continuous seal with the grout from <br /> the annular space of the well. The geologist was initially <br /> unwilling to comply with this well construction standard and <br /> began criticizing San Joaquin County's well construction <br /> standards and practices. <br /> The lack of communication within the Park Environmental <br /> Corporation and the apparent reluctance of Park Environmental <br /> staff to comply with San Joaquin County's well construction <br /> standards is unfortunate and unacceptable. <br /> A Division of San Joaquin County Health fare Services 1(> <br />