SITE INFORMATION AND CORRESPONDENCE

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Section 7.3 Quantities The following estimate of the quantities are approximate and are intended as a basis for the comparison of bids. Schedule A, the main schedule, includes all expected project activities. Schedule B is a contingency schedule. The contract shall be awarded on the basis of Schedule A plus Schedule B, as if for one additional quarter. Schedule A: Main Schedule ITEM DESCRIPTION QUANTITY UNITS 1 INSTALLATION OF VAPOR EXTRACTION AND AIR SPARGE WELLS (includes workplan, permits, and LS installation of three (3) vapor extraction and (3) air -- sparge wells) 2 INSTALLATION OF VAPOR EXTRACTION AND AIR -- SPARGE SYSTEM (includes all necessary components, LS equipment, and procedures) 3 SYSTEM STARTUP AND SOURCE TESTING (includes all testing, inspection and reporting necessary to bring -- LS system to regular operation schedule) 4 OPERATION, MAINTENANCE, COMPLIANCE MONITORING, AND REPORTING (includes site inspection, monitoring and adjustment of system -- LS parameters, sampling, sample analysis, and field monitoring as necessary and required) 5 QUARTERLY GROUNDWATER MONITORING AND REPORTING — SIX QUARTERS (includes sampling and -- LS sample analysis) 6 CONFIRMATION SOIL BORINGS (includes workplan, permits, four (4) soil borings, and coordination with SJ -- LS PHS/EHD) 7 CLOSURE REPORT -- LS 8 SYSTEM DECOMMISSIONING, REMOVAL, AND WELL DESTRUCTION (includes workplan, permits, destruction -- LS of 18 wells, and resurfacing of broken pavement) Schedule B: Contingency Schedule ITEM DESCRIPTION QUANTITY UNITS 1 CONTINUED QUARTERLY OPERATION, MAINTENANCE, COMPLIANCE MONITORING, AND max of 4 LS REPORTING (as in Item 4 — Schedule A) 2 CONTINUED QUARTERLY GROUNDWATER max of 4 LS MONITORING (as in Item 5 — Schedule A) SP6