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lin of Influent, effluent, intermediate water <br /> to the work plan:There was planned to be monthly sampling samples to be analyzed <br /> According BTEX, EDB and 1,2- DCA; and Influent and effluent vapor <br /> samples and to be analyzed for:TPH-g, <br /> for:TPH-g, BTEX, and 1,2-DCA/EDB. <br /> Looking through the DPE reports, it looks like there's been deviation from the planned analysis <br /> 1,2 DCA and EDB are not being analyzed for in vapor samples nor water samples(See Table 1 and Table 4 in <br /> reports). Are those two compounds required to be analyzed for? <br /> • I noticed that 5 fuel oxys are not being analyzed for in the AFT-AS sample and a AFT-AS was not sampled in <br /> March 2014 (as alluded to on page 3 of 8 in the First Quarter 2014 report). Is the AFT-AS required to be sampled <br /> monthly and for the 5 fuel oxys? <br /> • Composite influent samples from DPE-1 and MW-18 are occasionally analyzed, while other times it's solely MW- <br /> 18. Is this permissible? <br /> • The other remediation wells MW-19, DPE-2, and DPE-3 are used to apply vacuum. I do not know what DPE-4 is <br /> being used for as there is no mention of it in the remediation reports since Remediation Installation Report- <br /> Second Quarter 2013 page 6 of 8. DPE-4 was reported with 4,000 UG/L of TPH-g. Should it be getting some use? <br /> AGE recommends continuing monthly sampling and operation of the DPE system. May I please have your input <br /> regarding the above bullet points? I plan to respond in one letter with a groundwater monitoring schedule and <br /> comments on the DPE system/sampling. <br /> Thank you, <br /> Gabe <br /> 2 <br />