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Kasey Foley [EH] <br />From: Meeks, Steven@Waterboards <Steven.Meeks@waterboards.ca.gov > <br />Sent: Thursday, October 12, 2017 4:29 PM <br />To: Alvaro Garza [PHS]; Mimi Duzenski [MH] <br />Cc: Kasey Foley [EH]; Djuth, Gerald@Waterboards; McCrink, Marie@Waterboards; Black, <br />Stewart@Waterboards; Lancaster, David@Waterboards <br />Subject: FW: Tri-Ag Services Prop 65 Notification <br />Attachments: Tri-Ag Domestic Well Sampling Report.pdf <br />Follow Up Flag: Follow up <br />Flag Status: Flagged <br />This email is being sent as part of the notification requirements of Proposition 65. Today, I was made aware of <br />groundwater analytical results from a domestic well sampling event that occurred at 2112 South Main Street, Manteca <br />CA 95337. A groundwater sample result showed an exceedance of 1,2,3-Trichloropropane (TCP) at 0.150 ug/L, which is <br />above the MCL of 0.005 ug/L . This also exceeds the proposition 65 - one in 100,000 risk factor. In addition, the nitrates <br />measured as nitrogen at 25.8 mg/L exceeded the respective MCL value of 10 mg/L. Attached is the analytical results <br />report for the sampling event. <br />The probable discharger is Tri-Ag Services, which is located at the same address as the well. <br />A formal proposition 65 notification letter will follow via US mail. <br />If you have any concerns regarding this email please contact me. If you have any technical questions with regard the <br />sampling event, please contact Mark Bare at (916)464-4820 or by email at Mark.Bare@waterboards.ca.gov . Mark is <br />the case manager for the Site. <br />Thank you, <br />Steve <br />Steven W. Meeks, P.E. No. C 57461 <br />Senior Water Resources Control Engineer <br />Chief, Private Sites Cleanup Unit <br />California RWQCB <br />Central Valley Region <br />11020 Sun Center Drive, #200 <br />Rancho Cordova, CA 95670 <br />916-464-4678 <br />smeeksgwaterboards.ca.gov <br />1