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•c P . ' . <br /> CD4 <br /> PUBLIC HEALTH SERVICES ..z <br /> �o <br /> SAN JOAQUIN COUNTY q - <br /> ENVIRONMENTAL HEALTH DIVISION ={ <br /> Karen Furst, M.D , M.P.H., Health Officer <br /> •��`�F� <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> FRANK GUINTA tYt 2 8 2001 <br /> GUINTA ENTERPRISES <br /> 305 N UNION ROAD <br /> MANTECA CA 95377 <br /> RE ALTERNATIVE DRINKING WATER SITE CODE 1426 <br /> SUPPLY TO AFFECTED'WATER WELL CONSUMERS <br /> FRANKS EXXON <br /> 2072 W YOSEMITE AVE <br /> MANTECA CA 95377 <br /> The purpose of this letter is to summarize recent telephone conversations regarding the two <br /> • Copeland wells located at 17933 Airport Way Ms Carol Copeland contacted Dot Lofstrom of <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD)and <br /> Robert Kitay of Aqua Sciences Engineenng (ASE)to discuss the two wells Two houses are <br /> located at 17933 Airport way, and each house has its own well At the time of Ms Copeland's <br /> initial telephone call,a concentration of methyl tertiary butyl ether(MtBE) had not been detected in <br /> sr water samples collected from the well associated with one of the residences located at 17993 <br /> Airport Way However, MtBE had been detected in samples collected from the well associated <br /> with the other residence located at that same address Ms Copeland requested that the plumbing <br /> associated with the house attached to the impacted well should be detached from that well and <br /> reattached to the unimpacted well The reason for the request is that a sale of the property is <br /> pending and a potable water supply source is a requirement for the sale After discussing the <br /> proposed action, PHSIEHD agreed to the request and directed ASE to begin the work <br /> Subsequently. ASE collected a water sample from the previously unimpacted well and a limited <br /> amount (less than 1 0 µgll)of MtBE was detected in the water sample <br /> In a conversation following the detection of MtBE in the previously unimpacted well,ASE <br /> proposed that a wellhead treatment program might be a solut:on to the problem ASE originally <br /> proposed wellhead treatment as"Option Ili" in a letter to you dated September 8, 2000 and titled <br /> "ASE Proposal #2000-152, Installation of Temporary Potable Water Tanks Systems" In that <br /> letter, ASE stated three objections to the option, specifically that:t would require"(a)significant <br /> up-front expenditures for equipment and installation, (b)frequent sample collection and analyses <br /> to assure proper operation of the system, and (c)frequent maintenance on the system " <br /> Therefore, temporary, potable water tank systems were selected as the preferred method for <br /> supplying potable water to the impacted residences <br /> In the months that have followed that letter, it has become clear that the temporary, potable water <br /> tank systems are not a satisfactory method for supplying potable water to residents mth impacted <br /> wells Although it is a cost-effective and reliable solution to the problem, the area residents have <br /> expressed dissatisfaction with various difficulties associated with the portable tanks,such as <br /> inconvenience, low water pressure,and aesthetic concerns Additionally, recent telephone <br /> conversations between Dot Lofstrom and Michael Brinton, Ben Cantu, and.Joe Hulsey of the City <br /> of Manteca, as well as Bruce Baracco of the Local Agency Formation Commission (LAFCO)have <br />