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American Transit Mix Co., Inc. <br /> P.O. Box 5252 Pleasanton, California 94566 • (415) 463-1420 <br /> October 22 , 1990 <br /> 60 Ms. Laurie Cotulla <br /> Public Health Services <br /> San Joaquin County %Q0� <br /> 0�' <br /> P.O. Box 2009 <br /> Stockton, CA 95201 '�2lj�F�j sJ9 <br /> RE: 651 S. Mac Arthur Blvd. , Tracy - Site C� ti <br /> ''94 63-1 <br /> In your letter dated September 19, 1990 you asked for an <br /> addendum to our Ground Water Investigation Work Plan at the <br /> above location. In response I am submitting this letter with <br /> the following information as an addendum to the July 27, 1990 <br /> Work Plan: <br /> 1. American Transit Mix Co. will provide a watertight <br /> lockable cap at the top of each well casing. <br /> 2. A drawing of the monitoring well installation locations <br /> is being resubmitted with the scale more clearly <br /> identified. <br /> 3 . A list of all wells surveyed within 2000 feet of the site <br /> has been attached. <br /> 4. A letter from our contractor, Sampling Specialists, and <br /> the rental receipts showing that all hand augured borings .. <br /> had been compacted as discussed in our May 30 , 1990 <br /> meeting <br /> 5. A check in the amount of $89.00 for a permit to install <br /> the monitoring wells and to cover the permit for the hand <br /> augured ,borings. <br /> If weather and scheduling permits, we would like to begin <br /> installation of the monitoring wells in December of this <br /> year. We will give 48 hour notice to your department prior to <br /> the installation of any well at this site. <br />