ARCHIVED REPORTS_REPORT SUMMARIZING INSTALL OF MONITORING WELLS MW4,MW5,MW7,MW8 & SOIL BORING RDM1 & 4TH QTR 2013 GROUNDWATER SAMPLING

Home Browse Search

• Ms. Angela Lee Huntbrook Holdings,LLC February 12,2014 Page 2 157-104-03,and is approximately 10,125 square feet(150 ft. x 67.5 ft.) in size. The site is situated at an elevation of approximately 30 feet above mean sea level(Figure 1)and has relatively flat topography. • The site is situated on the southwest corner of the intersection of East Main Street and South Golden Gate Avenue, and is bordered to the west by residential housing and commercial; to the north, across East Main Street, by a small house and vacant lot; to the east across South Golden Gate Avenue by an Auto Repair shop; and to the south by residential. The site is located in an area of mixed residential housing and,commercial and light industrial properties. • There are two structures in very poor condition located in the northern portion of the subject property; the larger structure is the former station building and the other is an outbuilding containing bathroom fixtures. The former station building structure was built in the 1920's to 1930's and its construction is typical of service station construction during that time period. The structures are currently vacant. In addition, there is a one-story, approximately 2,350 square-foot, three-unit, multi-family housing • structure in the southern portion of the subject property. The site is currently surrounded by an ornamental iron security fence and the ground surface is covered by a combination of bare soil and old concrete/asphalt. The remnant of a fuel dispenser island is located along the northeast corner of the property, adjacent to the station building's foundation. The property is accessed by gates located along the northern and the eastern property lines. Site History Based on field observations, it appears the property has not been operated as a service station for years. Most recently, the former station building was used as a lawn mower repair shop and the other building has been used for multi-family housing. A review of limited historical data indicates a combination of • four USTs, that contained gasoline and/or waste oil, were removed in 1988. The previous consultant reported there are three reports documenting the 1988 tank pull activities, and there is apparently some discrepancy in the contents and sizes of the USTs. The three reports listed the following details: • The first report, dated June 15, 1988,stated the UST field activities included the removal of two 850-gallon gasoline USTs and one 550-gallon motor oil UST located along the western property line near East Main Street, and one 550-gallon UST located adjacent to the building along South Golden Gate Avenue; • A second report,dated August 29, 1988, is a North Cal Construction tank closure document that reported the removal of two 850-gallon gasoline USTs and one 250-gallon oil UST • along the western site boundary, and one 550-gallon gasoline UST located on the eastern side of the building along South Golden Gate Avenue;and • The third report, dated February 16, 1989, reported the removal of three 850-gallon gasoline USTs located along the west property line near East Main Street, and one 550- gallon motor oil UST located adjacent to the building along South Golden Gate Avenue. • Based on the review of the historical reports, the site contained a total of four USTs, ranging in size from 250 to 850 gallons, and the contents of the USTs were a combination of gasoline and/or waste oil/motor oil. In addition, the UST closure reports indicated that petroleum hydrocarbon-impacted soil remained beneath the USTs. •