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1 <br /> Ground Zero Analysis;"Inc. <br /> 1 172 Kansas Avenue <br /> Modesto,California 95351 <br /> (209)522-4119/Fax#522-4227 <br /> Memo , <br /> To: Mr.Harlin Knoll <br /> From: Ray Kablanow <br /> Date: June 17,201-3 <br /> Re: Response to Comments—May 21,2013 Letter <br /> Hello Harlin, <br /> We are in receipt of your correspondence dated May 21,2013. Thank you for your timely evaluation <br /> of this site for closure under Low-Threat Closure Policy. I have an initial response addressing your <br /> three items of concern: <br /> 1. Potential Risk of Indoor Vapor/Intrusion <br /> 2. Time Needed for the Groundwater to Reach Maximum Containment Levels(MCL's) <br /> 3. Well Destruction Procedures(MW-201 and CMT Wells) <br /> The following figures.and tables have been included with this letter: <br /> Figure 1: Benzene vs.Time in MW-5 <br /> Figure 2: Benzene vs.Time in MW-3 <br /> Figure 3: Benzene vs.,Time in MW-8 <br /> Figure 4: Benzene vs.Time in MW-108 <br /> Figure 5: Benzene vs.Time in MW-6 <br /> Figure 6: Benzene vs.Time in'MW-l <br /> Figure 7: Site Map <br /> Table 1: MW-5 Natural Attenuation Estimate <br /> Table 2: MW-3 Natural Attenuation Estimate <br /> Table 3: MW-8 Natural Attenuation Estimate <br /> Table 4: MW-108 Natural Attenuation Estimate <br /> Table 5: MW-6 Natural Attenuation Estimate <br /> Table 6: MW-I Natural Attenuation Estimate <br /> Table 7: Summary of Analytical Data—CPT Borings <br /> Table 8A: Summary of Groundwater Analytical Data-Shallow Wells <br /> Table 813: Summary of Groundwater Analytical Data-Intermediate Wells <br /> I <br /> I <br />