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Date <br /> PUBLIC NOTICE: FORMER GASAMAT <br /> #952 AT THE SITE AT 660 SUTTER STREET, <br /> Water Boards YUBA CITY, CA <br /> Public Notice: The California Regional Water Quality Control <br /> Board, Central Valley Region (Central Valley Water Board) <br /> invites public comment on the Former Gasamat#952 closure, <br /> made on behalf of Gasamat Oil-Corporation of GolofadoJor <br /> the former leaking underground storage tank (UST) site at <br /> 660 Sutter Street, Yuba City, Sutter County, CA. A map <br /> showing the location of the Site is attached (Figure 1). <br /> SUBJECT SITE: <br /> Former Gasamat #952 <br /> 660-Sutter Street -Sutter-Gounty,-CACONTACTS <br /> GeoTracker Global ID #T0610100080 <br /> Questions or Additional PUBLIC COMMENT PERIOD: <br /> Information Contact: YA <br /> * 01 through ori X01 <br /> RegionalMr. James Barton <br /> Board CASE SUMMARY: <br /> (916) 464-4615 <br /> jim.barton@waterboards.ca.gov, The subject site is the location of a former gasoline <br /> station with three underground storage tanks (USTs). <br /> Subsurface impacts to soil and groundwater were <br /> discovered. at the site in 1998 during mandatory <br /> upgrading of the fuel storage and delivery system. <br /> Since 1998, several subsurface investigations and <br /> groundwater sampling events have been conducted at <br /> the site and offsite areas to the east and south. Results <br /> of these investigations indicate that an unauthorized <br /> release of gasoline occurred at the site resulting in <br /> impacts to shallow groundwater located between 15 and <br /> 30 feet below ground surface. <br /> The primary contaminant of concern at the site is methyl <br /> tertiary butyl ether (MTBE). The existing groundwater <br /> contaminant plume extends from the east portion of the <br /> gasoline station site eastward beneath Sutter Street and <br /> the private lot east of Sutter Street. The estimated <br /> boundary of the plume is graphically shown on the <br /> attached MTBE lsoconcentration map (Figure 2). <br /> Other petroleum hydrocarbons have also been detected <br /> in groundwater associated with this site; however, the <br /> concentrations are generally low, limited in aerial extent, <br />