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Field Investigation: SSI - Prase Two <br /> LOPEZ <br /> IRRIGATION WELL SAMPLING <br /> ' At the request of PHS/EHD,and with the <br /> permission of Ms Lopez,owner of the adjacent <br /> site, HLA sampled the irrigation well on the <br />' adjacent Lopez property on July 29, 1999 As <br /> previously discussed this well has been previously <br /> sampled by TVG in 1989 and 1993 with non- <br /> detectable concentrations of TPHg and BTEX <br /> reported for both samplings The well was <br /> sampled from the hose bib at the well head Prior <br />' to sampling the water was turned on and allowed <br /> to run at an rate of 20-gallons per minute for 30 <br /> minutes The well head consists of a 3 5 feet by <br /> 3 S feet concrete slab,with a pressure tank that <br /> measures approximately 2 5 feet in diameter and 6 <br /> feet high The concrete slab and pressure tank <br /> appeared to be in good condition According to <br /> Ms Lopez the well is used every other day to <br /> water the lawn, is used only for irrigation <br /> purposes,and has never been used as a supply of <br />' drinking water <br /> 1 <br /> • <br />' L\30000\387371WP138737N19 Harding Lawson Associates 16 <br />