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Mr Marl.Gilmartin,Attorney September 24, 1998 <br /> Montgomery Wazd Auto Center,Stockton,CA Page 5 <br /> • Moisture content of imported fill soil at time of compaction shall not vary more than 2 percent <br /> above or below the optimum moisture content A minimum of one optimum moisture content and <br /> density test shall be performed on each source of backfill material (i e , native vs imported) <br /> • Remove surplus backfill material from site Excess backfill material shall become property of <br /> Fluor Daniel GTI <br /> • Fine grade compacted backfill to establish subgrade elevations determined by finished grade <br /> elevations shown on Drawings or as directed by your client, Montgomery Ward <br /> IN Field testing for moisture content and relative field density will be performed on in-place <br /> backfilled and compacted material for each 140 feet of trench length by a qualified geotechnical <br /> engineer field density tests will be performed in accordance with ASTM D1556 of ASTM <br /> D2922 if tests indicate work does not meet specified iequirements, Fluor Daniel G II will remove <br /> and ic.placc the, backfill inateiial at no addittondl cost to the Montgomery Waid <br /> All existing asphalt/concrete shall be removed after saw-cutting the trench dimensions in even straight <br /> lines Fluor Daniel G11 will be responsible for removing and disposing of asphalt at the site that is <br /> impacted by the system installation We will replace removed asphalt,with kind, over a six-inch layer of <br /> Class lI (Caltrans Standard Specifications) aggregate base to evenly match existing grade Aggregate base <br /> shall be compacted to 95% relative density Moisture and density testing described above for backfill <br /> material will also be applied to the aggregate base Asphalt Concrete will be Type B, '12 inch maximum <br /> aggregate, medium grading, AR4000 cement in accordance with Caltrans Standard Specifications <br /> Placement will be in accordance with Caltrans Standard Specifications <br /> Task 7 Construction of Aboveground Treatment Enclosure <br /> This task will include modifications to the construction to accommodate the vapor and groundwater <br /> extraction and air sparging system The entire treatment system will be placed on the existing concrete pad <br /> located on the southeast corner of the facility The treatment area will then be surrounded by fencing with <br /> a gate for access <br /> In addition, a state-certified electrician wil I provide a 400-amp/480V/3-phase power supply and <br /> disconnect, as well as a telephone line at the enclosure The electric power will be pulled from the main <br /> electric panel located inside the building Our cost proposal does not include gas and water supply <br /> installation costs <br /> Task 8 Well Vault/Pull Box Installation <br /> This task will include excavating the proposed vaults and well boxes to finished grade, setting vaults with <br /> cast iron traffic-rated covers, pouring concrete slurry around vaults to hold them in place, forming and <br /> pouring concrete collars, and well-head modification of the existing wells <br /> Task 9 Soil/Groundwater Remediation Equipment Installation <br /> As part of this task,Fluor Daniel GTI will install all the soil groundwater remediation equipment within <br /> the treatment system enclosure The treatment system to be installed in the enclosure will be comprised of <br /> the following components <br /> MGWCAP5D WPO <br /> FLUOR DANIEL G7I <br /> k5- <br /> 5 <br />