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STATE OF CALIFORNIA—HEAtTH AND WELFARE AGENCY GEORGE DEUKMEJIAN, Covera' <br /> DEPARTMENT OF HEALTH SERVICES <br /> TOXIC SUBSTANCES CONTROL DIVISION <br /> NORTHERN CALIFORNIA SECTION October 2, 1986 <br /> 4250 POWER INN ROAD <br /> SACRAMENTO,CA 95826 <br /> (916)739.3145 <br /> Mr. Richard Landon o , <br /> Executive Vice President <br /> Marley Cooling Tower. Company p.a <br /> P.O. Box 2912 <br /> Mission, Kansas 66202 ENVIRCYdt ! rV !' ALTH <br /> Ir ER 11-i;SEL.vt tS <br /> Dear Mr. Landon: <br /> REVISED WORKPLAN AND RESPONSE TO REGULATORY COMMENTS <br /> Approval was given to David Sates on September 5, 1986 to proceed <br /> with the next phase of the groundwater investigation at your <br /> Stockton facility. We have reviewed your workplan and are in <br /> agreement that the work should proceed as outlined in the plan. <br /> However, it is possible the feasibility study will be constrained <br /> by lack of data. For example, if in-situ treatment is one of the <br /> remedial alternatives proposed and there are insufficient data <br /> for its proper evaluation, the data will have to be collected at <br /> that time, possibly delaying the remediation of the site. <br /> To investigate the physical properties of the soil, we are <br /> requesting that the following basic soil classification tests be <br /> performed on soil samples collected from locations where you are <br /> considering in-situ treatment. <br /> 1. Gradation <br /> 2 . Atterberg Limits Tests <br /> 3 . Cation Exchange Capacity Tests <br /> Please provide the bench-scale studies report prepared by Roman <br /> Z. Pyrih and Associates, described in Attachment A of your latest <br /> submittal. Other items which have been requested, but not <br /> received are as follows: <br /> 1. Phase I and II groundwater investigation data - depth <br /> of pumps during pump testing done by Hargis and <br /> Associates. (May 27 , 1986 letter to Marley) . <br /> 2 . Requests for copies of actual well logs, instead of the <br /> summary of borehole lithology as submitted in prior <br /> Hargis reports. (May 27 , 1986 letter to Marley) . <br />