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SOIL QUALITY EVALUATION <br /> Prior to start of work, Underground Service Alert will Underground Utilities <br /> be notified so that they may contact the appropriate <br /> companies to perform underground utility checks. <br /> Our field engineer would direct a subsurface Subsurface Exploration <br /> exploration program, supervise, log, and sample four <br /> soil borings in the vicinity of the underground waste <br /> oil tank adjacent to the Insta Lube building at the site. <br /> The borings would be advanced to approximate <br /> depths of 10 feet. Soil samples would be collected at <br /> the 3-, 5-, and -10-foot depths in each boring. Soil <br /> samples collected would be monitored for volatile <br /> hydrocarbons using an organic vapor meter (OVM). <br /> Upon completion, the borings would be backfilled <br /> with grout to existing grade. <br /> The sample which exhibited the highest ovM reading Laboratory Analyses <br /> during field screening would be analyzed at a state- <br /> certified laboratory for,total petroleum hydrocarbons <br /> (TPH) as diesel (EPA Test Method 8015), total.:, <br /> petroleum oil Standard Method 5520EP), TP.H as <br /> gasoline with an additional scan for.benzene, toluene, <br /> ethylbenzene, and Xylenes (BTEX)'(EPA Test Method <br /> 8015/8020), and volatile organic compounds (vocs) <br /> (EPA Test Method 8010). All analyses. would be <br /> performed on a standard laboratory response time of <br /> two weeks. <br /> Soil Cuttings <br /> Soil cuttings would be placed in EPA-approved 55- <br /> gallon drums. We would evaluate disposal options <br /> following receipt of laboratory analyses. <br /> PROTOCOL <br /> Soil samples for laboratory analysis would be <br /> collected in brass liners, the ends covered in <br /> aluminum foil, taped, and capped with plastic end <br /> caps. Soil samples would also be monitored with an <br /> OvM. Soil would be placed in ziplock bags, sealed, <br /> and the ovM prove used to pierce the bag to take a <br /> reading after several minutes. All drilling and <br /> sampling equipment would be cleaned in a solution of <br /> tri-sodium phosphate and distilled water or steam <br /> cleaned before use. <br /> LOWNEVASSOCIATES <br /> Envuon mental/Georechniml/Engineering Services <br />