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April I4, 1995 Page 5 • will be recorded, and system influent and effluent samples will be collected Information generated during start-up will be presented to the District 4s necessary to complete source testing and obtain a Permit to Operate Remedial Progress Monitoring The following parameters will be collected initially and monitored during the 6-month SVE test • Influent TPH-g in soil vapor will be monitored on a semimonthly basis • Total volatile hydrocarbons will be monitored at each well on a senu- monthly basis • Vacuum pressure and flow rates will be monitored semimonthly • Dissolved TPH-g and benzene, toluene, ethylbenzene, and xylenes in groundwater will be analyzed initially, and at 3-month intervals • Dissolved oxygen will be analyzed at each vadose and monitoring well on a monthly basis in order to monitor oxygen available for biodegra- dation • Carbon dioxide and oxygen concentrations in soil vapor will be • analyzed on a monthly basis in order to monitor aerobic biodegrada- tion at the site Technical Report After receipt of all field data and Iaboratory data, the information collected during this 6-month SVE study will be evaluated and assembled into a technical report The report will include the TPH-g mass removed during the study, mass removal rate trends, hydro- carbon biodegradation rates, and recommendations regarding the long term feasibility SVE in conjunction with bioremediation at the site SCHEDULE A schedule for implementation of the Proposed scope of work follows The dates given are estimated completion dates and are contingent upon timely receipt of work plan approval • PHS/EHD review and work plan approval 04/30/95 • SVE System Design 05/31/95 • Prefield Activities (air and building permits, bids, etc ) 07/31/95 • • SVE System Construction 08/31/95 3100403A\WORKPLAN