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AASF Annual Report - 2 - 31 July 2014 <br /> Stockton CA ARNG <br /> Report needs to be revised to provide a summary of the findings from the 2011 <br /> investigation report on potential releases from the wash rack and to explain why <br /> additional actions are unnecessary for the solvents. <br /> SPECIFIC COMMENTS <br /> 1. Page 3-2, Section 3.3, Investigation Derived Waste Management: Revise this section <br /> to indicate where the liquid wastes were taken for disposal. <br /> 2. Page 4-3, Section 4.5, Mann-Kendall Trend Analysis: This section states "cis-1,2- <br /> DCE reduction may have been a function of physical attenuation, as it does not readily <br /> degrade aerobically". Central Valley Water Board staff disagrees with this statement. <br /> Tetrachloroethene and trichloroethene do not readily degrade in aerobic <br /> environments, but cis-1,2-DCE is known to degrade in some aerobic environments. <br /> Revise the last sentence in this section accordingly. <br /> 3. Page 5-1, Section 5.1, Site Background for Inorganics: Revise this section to explain <br /> why the highest concentration of each inorganic detected in site monitoring wells, prior <br /> to injection of the oxygen-release compound, was determined to be background. <br /> 4. Page 7-1, Section 7.0, Recommendations: Revise "COPC concentrations are <br /> immobile ..." to "COPC concentrations have limited mobility ...". <br /> 5. Figure 3: Add monitoring well MW-4 to this figure. <br /> If you have any questions, please contact me at (916) 464-4733 or email me at <br /> mpierce(D_waterboards.ca.gov. <br /> P"U� <br /> Marcus Pierce <br /> Associate Engineering Geologist <br /> Federal Facilities Unit <br /> cc: Suman Sharma, Oneida Total Integrated Enterprises, Walnut Creek <br /> Nuel Henderson, San Joaquin County EHD, Stockton <br />