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STATE OF CALIMRNIA-Environmental Protectdhgency PETE WILSON Govem^- <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> n�Z7r.i�-rn! �� s rn�� r:, <br /> CEN I I.r;L tiA�LEY REG10N �:fl °TAL <br /> (3. 255--w <br /> l.r `56• HE�S+►- f3443 Routier Road,Sute A <br /> -30 <br /> 5)2500rt0, A95827-358 SERVICE <br /> F Yj(,'2"r- <br /> ON <br /> 2-ONE (91 <br /> a) 15 FEB95 <br /> E <br /> � <br /> 10 PH I: 33 <br /> 7 February 1995 <br /> Mr. Steve Ferrara <br /> Santa Fe Pacific Pipeline Partners, L.P. <br /> 888 South Figueroa Street <br /> Los Angeles, CA 90017 <br /> WORK PLAN TO INSTALL A GROUND WATER TREATMENT SYSTEM, SANTA <br /> FE PACIFIC PIPELINE LEAK, HOLT, SAN JOAQUIN COUNTY <br /> I have reviewed the 16 January 1995 Results of Further Investigations and Work Plan for <br /> Implementing Remedial Measures submitted by Levine-Fricke on behalf of Santa Fe Pacific <br /> Pipelines for the Holt site. The plume of free product and extent of ground water contamination <br /> is well-defined except for the area east of monitoring well M-10. Any local production wells in <br /> the area would influence the hydrologic regime and possibly alter the radius of influence of the <br /> proposed extraction system. It is unclear what was done with the water extracted during the <br /> aquifer pumping tests. Page 13 of the report states that"sediments will be remediated through <br /> 40 the action of continuous `flushing' of fresh, oxygenated water . . ." Recent studies have shown <br /> that pulsed-round water extraction may be more effective at remediating contaminated soils and <br /> ground water. <br /> You may proceed with installation of the proposed ground water extraction and treatment <br /> system on condition that you address the above issues in writing by 3 March 1995. Also, by <br /> that date, please submit a more detailed work plan with a schedule (particular calendar dates) for <br /> start-up and monitoring of the system. Monitoring of the system should include confirmation <br /> that all contaminated ground water is being extracted. We suggest that you begin obtaining <br /> access and applying for all the pertinent permits now to avoid further delays. <br /> If you have any questions, you may call me at (916) 255-3077. <br /> r JOEL M. ISS <br /> Engineering Geologist <br /> JMW.jmwAsb <br /> cc: San Joaquin County Department of Public Health Services, Stockton <br /> Mr. Scott Seyfried, Levine-Fricke, Roseville <br />