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JU <br /> .IN <br /> A LT �ICES <br /> a: <br /> SjkNS N Co U\, Ty <br /> Health <br /> Hazelton Avenue) • 5tockt°n, California 95201 <br /> p.o.Box 2009 (1601 East (209) 468-3400 <br /> (0 a Fly <br /> JUAN QUIJANO <br /> ENVIRONMENTAL SERVICES SSOCIATION NOV 15 1991 <br /> TRI VALLEY GROWERS A <br /> P O BOX 1211 <br /> MODESTO CA 95353 <br /> Valley Growers IN REPLY REFER TO SITE CODE: 1920 <br /> RE: Tri V Y <br /> plant T <br /> 26200 North Galt Road <br /> Thornton, CA 95686 <br /> Joaquin County, Public Health Services, Environmental Health <br /> Joa <br /> San q completed review of the RESNA/Water Work <br /> has <br /> Division, (PHS/EHD) 1991 and the 1991 Third Quarter Monitoring <br /> letter dated October 9, <br /> Report prepared by Resna/Water Work dated October 15, 1991- <br /> osition to grant variances from the <br /> PHS/EHD is not in a P Title 22, <br /> requirements of the California Code of Regulations <br /> do sre requests for <br /> qu <br /> Article 3 , Section 66261.24. PHS/EHD Sugg artment of Toxic <br /> variance be submitted to California EPA, Dep <br /> Substances Control for review. <br /> Please provide information that would explain why petroleum <br /> contamination of MW--4/Extraction Well increased during the period <br /> of the third quarterly monitoring report. Please include a his <br /> explanation within the next quarterly report. A coy of APPP <br /> A is enclosed for your information. <br /> The request for the reduced sampling frequency of MW-2, <br /> MW-5, and <br /> MW-6 from quarterly to annually is denied. Prior to groundwater <br /> extraction/pumping the gradient shifted many times: Northeast, <br /> September 1997 ; West, February 1988 ; South--Southwest, August 1989; <br /> West-Southwest, November 1989, West, January 1990: Southwest, March <br /> 1990; Northwest, April 1990; West-Southwest, March 1991. The close <br /> proximity of MW-6 to the neighboring domestic well located at 26500 <br /> North Galt Road prohibits the reduction of sampling frequency. <br /> However, NW-2 and MW may be <br /> biannually <br /> notified until y <br /> this office to resume quarterly sampling. continue quarterly <br /> monitoring of water levels in all wells. <br /> A Division of San Joaquin County Health Care Services �� <br />