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SEMCO . <br /> GENERAL & ENGINEERING CONTRACTORS <br /> August,1990 <br /> 1.0 INTRODUCTION <br /> This Tank Excavation and Removal Report has <br /> been prepared to document the removal of four 2.2 Site Description <br /> underground fuel storage tanks located at 775 The property is located in San Joaquin County, <br /> W. Second Street, Stockton, California. The approximately three miles south of the central <br /> tank was removed on August 10, 1990.Excava- buisness district of Stockton. (See Site Location <br /> tion and transport of the tanks off-site for dis- Maps in Appendix 3)Appendix 4 contains a plot <br /> posal was accomplished by SEMCO, 431 West plan of the site which shows the location of <br /> Hatch Road,Modesto,California.Ownership of buildings, perimeter of the property, and the <br /> the tank was transferred to SEMCO for offsite location of the former underground fuel tanks. <br /> disposal. The tanks were found to lie at a depth of approxi- <br /> mately 8 feet (See Site Photographs in Appen- <br /> The purpose of this report is to define the physi- dix 2) <br /> cal setting of the site and vicinity, and to docu- <br /> ment tank removal, and associated sampling 2.3 Adjacent Land Use <br /> activities. Detailed analytical reports discussed Land use surrounding the site is predominantly <br /> herein are provided in Appendix 1.Photographs commercial.Charter Way (Highway 4)is north <br /> of the tank removal operations are provided in of the facility.IH 5 is near the eastern boundary <br /> Appendix 2. of the property. Stockton Street is west of the <br /> site. <br /> 2.4 Surface Water Characteristics <br /> The M&M Ditching site is approximatley 2.25 <br /> 2.0 FACILITY BACKGROUND acres in size. The site lies approximately 25 feet <br /> above mean sea level. The subject property is <br /> 2.1 Site History level and at street grade. <br /> Two underground storage tanks, identified as <br /> tank#1 and tank#2, were removed on August The major waterway in the vicinity is the Stock- <br /> 10.The capacity and contents of the tanks were ton Deep Water Ship Channel,located approxi- <br /> as follows: mately one mile northwest of the site. <br /> (1) One 1,500-gallon diesel tank; <br /> (2) One 1,000-gallon regular gasoline tank. According to the City of Stockton, Department <br /> of Public Works, the depth to groundwater is <br /> Two other tanks, identified as tank#3 and tank approximately 60 -70 feet. <br /> #4, had been previously removed in 1985.The <br /> tanks were the property of M&M Ditching,Tom <br /> Maragliano, owner. <br /> 2 <br />