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Harding Lawson Associates <br /> December 15, 1987 <br /> 18040,001.03 <br /> San Joaquin Local Health District <br /> 601 E. Hazelton <br /> P.O. Box 2009 <br /> Stockton, California 95204 ' <br /> Attention: Ms. Laurie Cotulla 0 EU <br /> U `' "-7 <br /> Ladies and Gentlemen; <br /> ENVIRUr0ENIRL HEALTH <br /> Application for Well Permits <br /> FERmIT/SERVICES <br /> 7-Eleven Store <br /> 455 Grant Line Road <br /> Tracy, California <br /> 0n behalf of 7-Eleven stores, Harding Lawson Associates (HLA) re- <br /> quests the required well permits to install three monitoring wells <br /> at 455 Grant Line Road in Tracy, California. We presented the re- <br /> sults of two initial phases of our investigation at this site in <br /> reports dated February 10 and April 28, 1987. <br /> We anticipate to begin drilling operations on December 21, 1987. <br /> HLA intends to install three monitoring wells and drill exploratory <br /> borings at the approximate locations shown on the site plan at- f <br /> tached. All borings/wells will be drilled using an 8-inch-diameter <br /> continuous flight hollow-stem auger. Two wells will have <br /> 4-inch-diameter PVC casings and a third will have a two-inch casing. <br /> The specific construction details for each well will be based on the <br /> results of the drilling and sampling program. The following well <br /> construction standards, in general, will be used: <br /> Soil samples will be obtained approximately every 5 feet to the max- <br /> imum depth explored. All samples will be sealed in brass tubes and <br /> the ends covered with aluminum foil and caps taned on over the <br /> foil. Samples will be placed immediately into an ice chest. The <br /> augers and sampling equipment will be steam cleaned prior to start- <br /> ing each boring; the sampling equipment will be washed in a solu- <br /> tion of trisodium phosphate and tap water and rinsed in distilled <br /> water between samples. The soil samples obtained will be accom- <br /> panied by a chain-of-custody form, which will be turned over to a <br /> chemical laboratory for testing. We anticipate that all wells will <br /> be 15 feet deep. The wells will have screened sections with 0.02 <br /> diameter slots from the bottom to approximately two feet above <br /> Engineers 1355 Willow Way Telephone Arizona Colorado Texas <br /> and Suite 109 415/687-9660 Alaska Hawaii <br /> Geoscientists Concord,CA 94520 California Nevada <br />