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McBillin Real Estate Investment - 3 - 7 November 2016 <br />2154 S. El Dorado Street <br />Stockton, San Joaquin County <br />and 105-115 feet bgs. However, sampling depths should be adjusted based on field <br />observations in order to target permeable zones for sample collection. <br />4. The Site Assessment Work Plan indicates that "selected soil samples" collected from borings <br />B-10 and B-11, near the former waste oil tank (Tank #1), will be analyzed for volatile organic <br />compounds (VOCs), semi-volatile organic compounds (SVOCs), polychlorinated biphenyls <br />(PCBs), and Title 22 metals. In order to target soil that may have been impacted by the former <br />waste oil tank, please analyze the soil samples collected from 10 feet and 15 feet bgs for <br />these constituents. <br />By 3 February 2017, please submit a Site Assessment Report summarizing the above discussed field <br />work, and present all analytical data in tabular form. Please include two (2) geologic cross sections: <br />one parallel to groundwater flow direction, and one perpendicular to groundwater flow direction. Each <br />cross section should include both on-site and off-site wells and borings, and should show lithology, <br />well and boring construction details, and soil and groundwater analytical data. <br />Newly installed monitoring wells are to be sampled quarterly for four (4) quarters. Please sample the <br />newly installed wells during first quarter 2017, and submit a Groundwater Monitoring Report by <br />30 April 2017. Subsequent quarterly Groundwater Monitoring Reports are to be submitted within 30 <br />days of the end of each calendar quarter. <br />If you have any questions or concerns regarding comments in this letter please call me at (916) <br />464-4615 or contact me by email at alan.buehler@waterboards.cagov. <br />/s/ original signed by <br />Alan M. Buehler, P.G. <br />Engineering Geologist <br />cc: Sriram lyer, State Water Resources Control Board, UST Cleanup Fund, Sacramento <br />Nuel Henderson, San Joaquin County Environmental Health Department, Stockton <br />Tim Cuellar, Advance GeoEnvironmental Inc., 837 Shaw Road, Stockton 95215