SITE INFORMATION AND CORRESPONDENCE

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r • 61ry COUN( It I D M RI ID, MayoIHOMASA PETERSON I VI I VN M OISON r CITY OF L O D I C'ty Manager V %,,Vor I"', Irnquin• AI l(t M REIMC71E CITY IIA LL, 221 WEST PINE STRI I I City Clerk I)A VIII Al IIIN(IIMAN CALL BOX 3006 IAMI S W PINKI R ION, Ir LODI, CALIFORNIA 95241-1910 RONALD M STEIN JOHN R (Randy) SNIDI R (209) 334-5634 City Attorney December 19, 1986 Pgraalyzo Ron Valinoti DEC 22 1986 San Joaquin Local Health District P.O. Box 2009 ENVIROMENTAL HEALTH Stockton, CA 95201 FERMIT/SERVICES Wednesday, December 17, 1986, my office was verbally notified by Mr. Stephen Boll of the California Regional Water Quality Control Board of lab results received from a monitoring well located on Cherokee Lane ,just south of Pine Street in Lodi . Mr. Boll stated that extremely high levels of Benzene (1 ,100 ppb) , Toluene (1,500 ppb) , and Xylene (13,000 Ppb) were found in the groundwater at this location. These levels far exceed the action levels established by the EPA of . 7 ppb, 100 ppb, and 620 ppb, respectively. Mr. Boll suggested that the City check for these pollutants in the wells down gradient from the contaminated site. We have now sampled the three closest wells and should have complete test results by December 26, 1986. We understand that the latest tests were conducted in February of 1986, however, other initial tests were taken in the middle of 1985. The City 's concern is that the results of the tests conducted in February, which confirmed major groundwater contamination within City of Lodi boundaries , were not brought to our attention for over 10 months. The City of Lodi serves water to over 43,000 residents. The underground water supply is Lodi ' s only source and, therefore, we are taking this contamination very seriously, as should any agency involved with the protection of the groundwater supply. The Citv feels there has been a real lack of communication and that we should have been notified long ago. Since your agency is the lead agency in the County for the underground fuel tank contamination program, we are requestintl that you develop a formal notification plan to alert all water suppliers and the State Health Department of any suspected contamination sites which could affect a Supp ier s water source. Until this notification plan is developed, the City of Lodi is requesting to be informed immediately (within the next two weeks) of all other known groundwater contaminations within Lodi 's water system's sphere of influence as shown on the attached plan. It may be that there is justification for other immediate testing. For your information, a similar letter and request is being sent to the California Regional Water Quality Control Board.