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Variance requested: Proposed soil investigations do not require substantial deliveries of materials and equipment and all vehicles will be removed at the end of each workday; therefore, it is not feasible to limit deliveries to off peak hours. BMP 7. Minimize idling time by requiring that equipment be shut down after five minutes when not in use (as required by the State airborne toxics control measure [Title 13, Section 2485 of the California Code of Regulations]). Provide clear signage that posts this requirement for workers at the entrances to the site and provide a plan for the enforcement of this requirement. Variance requested: This BMP shall be provided as part of the contract, but posting at each site is not feasible as the project activities will take place over diverse locations. BMP 8. Maintain all construction equipment in proper working condition and perform all preventative maintenance. Required maintenance includes compliance with all manufacturer’s recommendations, proper upkeep and replacement of filters and mufflers, and maintenance of all engine and emissions systems in proper operating condition. Maintenance schedules shall be detailed in an Air Quality Control Plan prior to commencement of construction. Variance requested: Because this is not a construction project, an Air Quality Control Plan is not required. All equipment will be maintained in proper working condition and preventative maintenance will be conducted as recommended. BMP 9. Implement tire inflation program on jobsite to ensure that equipment tires are correctly inflated. Check tire inflation when equipment arrives on-site and every two weeks for equipment that remains on-site. Check vehicles used for hauling materials off- site weekly for correct tire inflation. Procedures for the tire inflation program shall be documented in an Air Quality Management Plan prior to commencement of construction. Variance requested: Because this is not a construction project, an Air Quality Control Plan is not required. Tire inflation will be checked and corrected as needed. BMP 10. Develop a project specific ride share program to encourage carpools, shuttle vans, transit passes and/or secure bicycle parking for construction worker commutes. Variance requested: The proposed project locations are remote and spread over a wide geographic area; therefore, providing transit passes and bicycle parking would not be beneficial. Use of carpools and shuttle vans will be encouraged to the extent feasible.