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: =-- (yLL <br /> R. <br /> AL HEALTH DEPARTMENT <br /> ENVIRONMENT COUNTY un�tSupervisors <br /> SAN JOAQ�UIN CO <br /> P�'U!N••.00 Carl Borgman,R.E.H.S. <br /> O.•' <br /> -, __� Third Floor <br /> Donna K.Heran,R.E.H.S. 304 East Weber Avenue, Mike Huggins,R.E.H.S.,R.D.I. <br /> Director StOClitOn, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> 1 . Al Olsen,R.E.H.S. Margaret Lagorio,R.E.H.S. <br /> Program Manager Telephone: (209) 468-3420 Robert McClellon,R.E.H.S. <br /> eq�i F oLaurie A.Cotulla,R.E.H.S. Fax: (209) 464 l 0 1 2004 Mark Barcellos,R.E.H.S. <br /> Program Manager <br /> AMERCO REAL ESTATE CO <br /> Hp,RRY' S AUTO MART R RIN$R U-Haul #709-50 <br /> JOHN a MAXINE FERRAIOLO 2721 N CENTRAL AVE #700 <br /> PO BOX 757 PHOENIX AZ 85004 <br /> Lodi CA 95241 <br /> Re: Petroleum Impact, Drinking Water Well at Frontier Motel <br /> 2639 N. Wilson Way <br /> Stockton, CA. 95205 <br /> County Environmental Health Department (EHD)wasnotified <br /> es mp February <br /> San Joaquin C y <br /> 17, 2004, by Fruit Growers Laboratory (FGL), that treated <br /> d Carbon GAC drinking <br /> water vessels, <br /> collected between the two Gran rIe z dalA zed and d thepetroleum contaminant 1,2- <br /> located at the Frontier Motel, we Y <br /> D <br /> ichloroethane (1,2-DCA) has been detected above Maximum Contaminant Levels <br /> (MCL). • <br /> This detection indicates that the first GAC vesselstem is being <br /> onto the second vessel. <br /> overwhelmed and allowing contaminants to pas <br /> ' concerned that the treatment system's original design on and er adequaeons to te, and the EHD is <br /> the GAC treatment system to remove the 1,2-DCA are n <br /> public drinking water is not meeting the Safe Drinking Water Act (SDWA) for the <br /> following reasons: <br /> 1. The water usage at the motel has significantly �water se may be since the tcont buti g to <br /> reatment <br /> system was originally designed. This increase <br /> the exhaustion of the GAC within both vessels at a ma snot ensure that safe ter rate than Sly <br /> predicted. Current water monitoring frequence Y <br /> drinking water is being supplied to Frontier Motel. <br /> oncentrations <br /> 2 <br /> A ten-fold increase in water usage may cause there <br /> panto Ibumebeing drawn tows ds <br /> of the contaminant in the well dparameters e to the cmay not be able to treat these higher <br /> ontathe well. The original design on of the GAC <br /> concentrations of 1,2-DCA because of a faster u do Fronde Motel ithin bot <br /> vessels. If this occurs, unsafe water may be delivered <br /> 3. The treatment system was designed with a 6•CT inute EHD and thEmptye California Contacted Time <br /> (EBCT) instead °ealth Services (CDHS)f the required te EB .app oval of 6.8-EBCT design was based <br /> Department of H <br /> upon the understanding that this was a temporary means to meet the <br />