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is Navarra Site:Potable Water=Supply Well Program Page 4 of 7 Wells to be Eliminated from Program We recommend that the three wells described below, for the reasons stated, and to avoid unnecessary expenditure of the USTCF funds, be excluded from the revised potable water supply monitoring program. Well ID Location Tuso 24195 Chrisman Road That well is upgradient from the 7500 West Eleventh Street site and upgradient of the former leaking underground storage tank that was located at 24195 Chrisman Road. It was included in the original potable water-quality monitoring program only to proceed with an abundance of caution in case it might have been unexpectedly affected by the leaks that occurred either at 7500 W Eleventh Street or at an off-site location at 24195 Chrisman Road. No analytes of concern have been detected in samples of potable water recovered from this well, which was assigned the Well ID "Tuso." Well ID Location Gowan 7601 W Eleventh Street That well is to the west of the plume of affected groundwater emanating from the Navarra Site. Of modern design, it was installed in July 2002. It draws water from a screened interval between 470 ft. and 500 ft. beneath the ground surface (BGS). That depth interval is beneath the Corcoran Clay aquitard. The screened interval is protected by a Portland cement grout seal that extends from the ground surface to a depth of 200 ft. BGS. No analytes of concern have been detected in samples of potable water recovered from the Gowan well over the one-year period of the completed water-quality monitoring program. There is no hydrogeologic or geochemical data that has been gathered at the Navarra Site that would suggest that there is any risk that groundwater extracted from this well might be affected by components of fuel hydrocarbons released at the Navarra Site. Well ID Location Carmelo Carmelo Business Park (off Chrisman Road) That well is a considerable distance to the west of the plume of affected groundwater emanating from the Navarra Site. Of modern design, it was installed in July 2000. It draws water from a screened interval between 480 ft. and 520 ft. beneath the ground surface (BGS). That depth interval is beneath the Corcoran Clay aquitard. The screened interval is protected by a bentonite seal that extends from the ground surface to a depth of 200 ft. BGS. No analytes of concern have been detected in samples of potable water recovered from the Carmelo well over the one-year period of the completed water-quality