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7 <br /> OVATIL <br /> A S S O C I A T E S I N C <br /> measured and allowed to stabilize. Water samples will be collected using disposable bailers, one <br /> dedicated to each well. <br /> Groundwater. samples collected from all five monitoring wells will be submitted using chain-of- <br /> custody record to a State-certified laboratory. Groundwater samples, five total, will be analyzed <br /> for TPHg, TPHd, BTEX, and oxygenate fuel additives. Purge water will be stored on site in 55- <br /> gallon drums approved for-hazardous liquid storage pending laboratory analysis. <br /> Report Preparation <br /> Upon completion of the well installation and development activities, a summary report will be <br /> prepared for submittal to PHS/EHD. The report will include a description of all field activities, <br /> laboratory analytical results, and well/boring logs. <br /> All work described in this workplan will be performed under the direction of a California <br /> Registered Professional Engineer. All work will be performed in accordance with ATC's Site <br /> Safety Plan (SSP) and Quality Control/Quality Assurance Plan for this site. Both of these plans <br /> are on file with PHS/EHD. <br /> Projected Schedule <br /> Once approval of this workplan has been received, ATC will schedule drilling activities. ATC will <br /> notify PHS/EHD at least 48 hours prior to beginning any field activities. ATC has tentatively <br /> scheduled drilling activities for July 15, 1999. The summary report will be submitted to <br /> PHS/EHD approximately four to five weeks after the completion of field activities. <br /> if you have any questions regarding this workplan, please contact us at (209) 579-2221. <br /> E Respectfully submitted, <br /> ATC Associates Inc. <br /> " Ute„ GJ4Q_.� al� - <br /> Drew Van Allem <br /> .{1,,, I n•, <br /> Staff Scientist <br /> .Jeanne Homsey, P.E. Q y° <br /> Registered Engineer No. C47410 P <br /> UIVI <br /> Attachments �y <br /> cc: Mr. Leo Zuber-Ripon Unified School District <br /> Mr. Mark List, RWQCB <br /> w:113099N=portslwkpwc1ii.doc 4 <br />