Laserfiche WebLink
Harding Lawson Associates <br /> November 20, 1986 - <br /> 18040,001.03 <br /> San Joaquin Local Health District <br /> 601 E. Hazelton <br /> P.O. Box 2009 <br /> Stockton, California <br /> Attention: Ms. Laurie Co tulla <br /> Ladies and Gentlemen: <br /> Application for Well Permits <br /> 7-Eleven Store <br /> 455 West Grant Line Road <br /> Tracy, California <br /> 0n behalf of 7-Eleven stores, Harding Lawson Associates (HLA) <br /> requests the required well permits to install four monitoring wells <br /> at 455 West Grant Line Road in Tracy, California. This 7--Eleven <br /> store has three underground gasoline tanks, one of which has been <br /> identified to have a leak and has been emptied. Relative to this <br /> leak, 7-Eleven has issued an Underground Storage Tank Unauthorized <br /> Release Report, dated November 5, 1986. The purpose of the four <br /> monitoring wells is to help define the extent of the contamination. <br /> We anticipate to begin drilling operations on November 21, 1986. <br /> HLA intends to install four monitoring wells at the approximate <br /> locations shown on the site plan attached. All borings/we11s will <br /> be drilled using an 8-inch-diameter continuous flight hollow-stem <br /> auger. Wells will consist of 2-inch-diameter PVC casing with <br /> flush-mounted joints. The wells will be screened from the bottom <br /> to approximately 5 feet below the ground surface but no less than <br /> 1 foot above the ground-water level. The specific construction <br /> details for each well will be based on the results of the drilling <br /> and sampling program. The following well construction standards, <br /> in general, will be used: <br /> Soil samples will be obtained approximately every 5 feet to <br /> the maximum depth explored. All samples will be sealed in <br /> brass tubes and the ends covered with aluminum foil and caps <br /> taped on over the foil. Samples will be placed immediately <br /> into an ice chest. The augers and sampling equipment will be <br /> steam cleaned prior to starting each boring; the sampling <br /> equipment will be washed in a solution of trisodium phosphate <br /> and tap water and rinsed in distilled water between samples. <br /> The soil samples obtained will be accompanied by a chain-of- <br /> custody form, which will be turned over to a chemical <br /> laboratory for testing. <br /> Engineers 2430 Stanwell Dr Telephone Alaska Colorado Texas <br /> Geologists& suite 110 415/687-9660 Arizona Hawaii <br /> Geophysicists Concord,CA 94520 California Nevada <br />