Laserfiche WebLink
..-t1 11 <br />!i ENVIRONMENTAL TECHNOLOGIESCCRPORATION <br /> 47 wt - <br /> December 13, 1995 <br /> 95-113-10 <br /> Ms. Mary Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Subject: Addendum to the "Workplan for Site Investigation", Wheel Country, <br /> 474 West Grant Line Road, Tracy, California <br /> Site Code: 2108 <br /> Ms. Meays: <br /> Smith Environmental Technologies Corporation is submitting this addendum to the "Workplan for <br /> Site Investigation" in response to your comments in the June 14, 1995 correspondence regarding <br /> 'the workplan for the subject site. In accordance with additional information supplied by the <br /> client, Eraclis Tsirelas, Smith Environmental revised the site plan to show the former waste oil <br /> underground storage tank (UST)located near the southwest corner of the building on-site and the <br /> former gasoline USTs located further to the south than located in the original workplan (Figure <br /> 2). In addition, the bottom of the former waste oil tank was, reportedly, at 7 feet below ground <br /> surface(bgs). <br /> In order to investigate soil and groundwater in the vicinity and downgradient of the locations of <br /> the former gasoline USTs and the former waste oil UST, three soil borings will be advanced to <br /> depths of approximately 25 to 30 feet bgs, and one boring will be completed to 9 feet bgs. <br /> Drilling will be-conducted using 8-inch O.D. hollow stem augers. Locations of proposed borings <br />_ Rare <br /> shown,oh-Figure-2, °Two�deep=bormgs will-be-located,in the-assumed downgradient"direction <br /> (northeast) of the former gasoline and waste oil UST locations, and one deep.boring will be <br /> located in the assumed upgradient direction of the former UST locations. In addition, one <br /> shallow boring will be completed to 9 feet bgs (approximately 2 feet below the bottom of the <br /> former waste oil tank) in the downgradient direction from the former waste oil UST location. <br /> Soil samples will be collected at five foot intervals, and up to two soil samples from each boring <br /> will be submitted to a state-certified laboratory for analysis. The soil samples from the three.deep <br /> borings willbe analyzed for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, <br /> ethylbenzene and total xylenes (BTEX), and total lead. The soil samples from the shallow 'boring <br /> will be analyzed for total petroleum hydrocarbons as motor oil (TPHmo), and total lead. At least <br /> 95113\LETPERS\L 110895:doe 1 <br /> 1260 Graphics Drive Modesto,CA 95351-1502 (209)579-2221 Fax(209)579-2225 <br /> Engineering Consulting Remediation Construction <br />