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SECTION 6 <br /> IMPLEMENTATION SCHEDULE <br /> The implementation schedule for the proposed remediation is <br /> described below Based on the estimated time required to complete the <br /> aeration, the overall time required to close the two sites is <br /> approximately 21 to 27 weeks This estimate assumes that aeration and <br /> ground water extraction, sampling and disposal proceed concurrently <br /> Any delay in aeration, or any additional ground water treatment that <br /> may be required will delay the schedule correspondingly The <br /> estimated duration of the major tasks is listed below <br />' TASK DURATION <br /> TASK TASK DESCRIPTION __ (Weeks) Date <br />' Task 1 Preparation 4 9/1-9/28 <br /> Task 2 Excavation and Backfilling 1 9/29-10/5 <br /> Task 3 Aeration (Start-up and Full-scale) 6 - 10 10/6-12/13 <br /> Task 4 Ground Water Extraction 1 10/6-10/13 <br /> Task 5 Ground Water Disposal 6 - 8 10/13-12/6 <br /> Task 6 Data Analysis and Reporting 6 - 8 12/142/8/94 <br /> Task 7 Closure 4 - 6 2/9-3/23/94 <br />' TOTAL DURATION (Weeks) 21 - 27 <br /> (Time Period) 9/1/93-3/23/94 <br />' The scheduling assumptions and contingency requirements for each of <br /> these tasks are further described below <br /> Task 1: Preparation <br />' As described in Section 5, the preparation tasks includes mobilizing <br /> subcontractors, identifying and testing backfill, obtaining the required <br /> permits, preparing the health and safety plan, setting up the ground <br />' water extraction equipment and tanks, and verifying that the proposed <br /> aeration area is suitable <br /> I <br /> To expedite the overall project schedule, these preparation activities <br /> are assumed to occur during EHD's review of the FRP We have <br /> assumed that the necessary permits and APCD approval can be <br /> 6-1 <br />