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P <br /> Mr. Ron Rowe <br /> December 18, 1998 <br /> CAMBRIA <br /> The test will be composed of a step-drawdown test (approximately 2 hours), recovery <br /> (approximately 1 hour), a constant discharge test (approximately 6 hours), and a second <br /> recovery period(approximately 3 hours). <br /> The data from the field test will be analyzed to estimate aquifer parameters, such as <br /> transmissivity, hydraulic conductivity,and well efficiency. <br /> Reporting: After the analytic results are received, we will prepare a subsurface investigation <br /> report that, at a minimum, will contain: <br /> • A summary of the site background and history, <br /> • Descriptions of the drilling and soil sampling methods, <br /> Boring log and well construction diagrams, <br /> • Tabulated soil and ground water analytic results, <br /> • Analytic reports and chain-of-custody forms, <br /> • A summary of the methods and results of the aquifer pumping test, and <br /> • A discussion of the hydrocarbon distribution. <br /> SCHEDULE <br /> Upon receiving written work plan approval from the SJCPHS, Cambria will schedule the field <br /> work. Cambria will submit an investigation report approximately 45 days after completing the <br /> field work. We appreciate the opportunity to work with you on this project. Please call if you <br /> have any questions or comments. <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> FESSi q�l <br /> Owen Ratchye, RE <br /> Project,Engineer <br /> s,,, N0. 046725 �.s <br /> , �j <br /> Diane Lundquist, E <br /> Principal Engineer <br /> Attachments: Appendix A: Standard Field Procedures for Cone Penetrometer Testing and Sampling <br /> } cc: Ms.Karen Petryna,Equiva Services LLC,P.O.Box 6249,Carson,CA 90749-6249 <br /> i <br /> 4 <br />