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NWO <br /> Advanced <br /> GeoEnvironmental , Inc . <br /> 05 October 2012 <br /> AGE Project No. 10-1821 <br /> Mr. Garrett Backus <br /> San Joaquin County Environmental Health Department <br /> 1868 East Hazelton Street <br /> Stockton, CA 95205 <br /> Subject: Soil Sample Collection Work Plan - Primary Backup Boiler Line <br /> ST. JOSEPH'S MEDICAL CENTER <br /> Underground Storage Tank Line Abandonment <br /> 1909 Cemetery Lane, Stockton, California <br /> Dear Mr. Backus: <br /> At the request of St. Joseph's Medical Center/Dignity Health, Advanced <br /> GeoEnvironmental, Inc. (AGE) has prepared this Soil Sample Collection Work Plan - <br /> Primary Backup Boiler Line to complete the abandonment of a southern portion of the <br /> diesel underground storage tank (UST) line at 1909 Cemetery Lane, Stockton, California <br /> (facility). <br /> BACKGROUND/SCOPE OF WORK <br /> This work plan presents a scope of work to investigate and evaluate soil beneath the UST <br /> piping to be abandoned in-place. The portion of the UST system line to be <br /> decommissioned is located underground from the northern edge of the main hospital <br /> structure(driveway loading dock)and continues north underthe driveway,continuing under <br /> McCloud Avenue and further north through the eastern edge of the main parking lot for the <br /> facility and, finally, to the UST at the main boiler plant. It is our understanding that the line <br /> is double-walled fiberglass. <br /> Elite IV Contractors (Elite) shall purge, rinse and fill the line prior to sample collection. <br /> Furthermore, the above-ground portion of the line (steel) will be isolated with valves and <br /> capped by Elite. <br /> AGE proposes to collect regularly spaced soil samples from beneath the piping within the <br /> driveway area, parking and road way, between the former generator room and the laundry <br /> area loading ramp. AGE anticipates thirty-two (32) separate locations for soil sampling. <br /> 837 Shaw Road• Stockton,CA 95215 <br /> Telephone(209)467-1006•Fax(209)467-1 1 18 <br />