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ABANDONED UST INITIATIVE PHASE II Site:#16 El Dorado Auto CENTRAL VALLEY, CALIFORNIA 2070 South El Dorado Street MATERIAL REMOVAL Stockton,California Site #16 EI Dorado Auto, Stockton DTSC Temp ID CAC002877976 Date: September 29,2016 Arrival Time: 8:15 am Departure Time: 12:40 Onsite Personnel: Nick Patz (Adanta), Laren Kaufman (MP Environmental), Juan Lopez (MP Environmental), Vance Morai (MP Environmental), Alex Barbosa (MP Environmental), Margaret Quiroga (site owner), and Kasey Foley (San Joaquin County EHD). Current site conditions: The site is located in Stockton,San Joaquin County,California and is currently operated as a tire service center that also performs limited automotive repair. Tires onsite primarily have been recycled,mostly originating from a nearby auto dismantling facility.The facility was very crowded with piles of tires blocking access to fill ports on the day the pumping was conducted. However,the current owner and the current operator of the facility were cooperative in getting us access to fill ports. There are four USTs onsite, one waste oil with an unknown gallon capacity located on the east side of the building,and three USTs with a reported 8,000-gallon capacity located on the north side of the site. Each tank is assumed to be constructed of single-wall steel.Two of the USTs are full of water only.Based on field work and the known quantity of material pumped from one tank it is likely the USTs are smaller than originally reported. Material Removal Methodology: After securing and bonding hoses to the vacuum truck, material was directly pumped into the vacuum truck via a bonded hose.A stinger was not deemed necessary because the material was described as waste oil (low volatility), and using the hose directly allowed for the work to be completed more quickly. Because there was a preliminary estimate of well over 8,000 gallons of material to be removed,and the vacuum trucks have a capacity of 6,000 gallons two vacuum trucks were requested for use at the site. UST# Capacity Structure Material Estimated Volume Coordinates of Fill Port (gallons) Removed Removed (gallons) From Cell Phone T-WO-1 unkown Single-wall Steel Waste Oil 550 N 37 930205 W 121 282726 T-W-2 8,000 Single-wall Steel Water 0 N 37 930356 W 121 282958 rT-M-3 ,8000 Single-wall Steel Water 0 N 37 930358 W 121 282988 T-E-4 unknown Single-wall Steel Waste Oil 8,000 N 37 930358 W 121 283013 Actual Total Metered Volume Removed 5,798 Description of Adjacent Sites: The Site is on the east side of El Dorado Street. Adjacent to the west side of El Dorado Street is a gasoline service station. A groundwater monitoring well is in the sidewalk on the east side of the Site that is reportedly associated with the gasoline service station.Adjacent to the south of the Site is an undeveloped lot.Adjacent to the north is the parking lot of a restaurant.Adjacent to the east is a dirt alley followed by single-family residences. On the lot adjacent to the west of the Site is a dumpster that accumulates various debris,that is apparently removed quickly by local indigent persons.