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3 Y <br /> PUBLITI HEALTH SERVICES .,C?. <br /> '•G <br /> SAKI JOAQUIN COUNTY <br /> JOGI KHANNA NID..M.P.1i <br /> HeiltS Officer • �. P <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) + Stockton, California 95201 4�r�°¢� <br /> (209) 468-3400 i !� <br /> JUAN QUHJANO COT - 1 1991 <br /> TRI VALLEY GROWERS ASSOCIATION <br /> P O BOX 1211 <br /> MODESTO CA 95353 <br /> RE: Tri-Valley Growers Plant T IN REPLY REFER TO SITE CODE: 1920 <br /> 26200 N. Galt Road <br /> Thornton, CA 95686 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) conducted a site <br /> inspection to observe sampling procedures on September 12, 1991. PHS/EHD has the following comments <br /> for your consideration. <br /> The PHS/EHD representative, Mary Meays, arrived on-site at 10:15 a.m. Alex Flores and Anthony Scoma, <br /> WaterWork/Resna representatives,were already present. According to field records the depth to water had <br /> been measured in all six monitoring wells and monitoring wells MW3,MW5 and MW6 had been purged in <br /> advance of the arrival of PHS/EHD. Following PHS/EHD's arrival, MWl was prepared for purging which <br /> occurs prior to sampling. As purging was initiated, PHS/EHD observed that purged groundwater was <br /> discharged directly to land. PHS/EHD halted the procedure and questioned WaterWork/Resna <br /> representatives. <br /> It was determined that purge water from MW3,MWS and MW6 had been discharged directly to land. Five <br /> plastic 55 gallon drums were already on-site (though labelled improperly) two of which were unused. <br /> WaterWork/Resna was directed to containerize purged groundwater. Thereafter,purged groundwater from <br /> MWI, was containerized in the presence of PHS/EHD. <br /> Wastewater discharged from Tri-Valley Plant T is governed by Waste Discharge Requirement (WDR) Order <br /> No. 71-23. It was found by the Central Valley Regional Water Quality Control Board (CVRWQCB) that the <br /> addition of treated effluent, from the activated carbon groundwater treatment system to the wastewater <br /> discharge system,did not require a modification of the Discharge Order. This Order does not include purged <br /> groundwater, that has not undergone treatment and which is considered to be potentially contaminated. <br /> The practice of discharging purged water directly to the ground should be discontinued. <br /> If you have any questions or comments, contact Mary Meays, EHS, of my staff at (209)468-3441. <br /> Jogi Khanna, .D., M.P.H. <br /> Health OJcer7 ' <br /> e A o a, S, Program Mana er <br /> Environmental Health Division <br /> j LAC/MM:nr <br /> Y c: CVRWQCB - Elizabeth Thayer <br /> c: CVRWQCB - Wayne Pierson <br /> C, WaterWork/Resna Industries - Bill Channell <br /> A Division of San Joaquin Counry Health(are Services <br />