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Required Measure Implementation Timing <br />Responsible for <br />Ensuring Compliance / <br />Verification <br />Date <br />Completed <br />and Initials <br />conducted during excavation to ensure that all arsenic impacted soils are removed, and that <br />residential Environmental Screening Levels (ESLs) for residential uses are not exceeded. <br />Excavated materials shall be transported per California Hazardous Waste Regulations to a <br />landfill permitted by the state to accept hazardous materials. <br /> Any subsurface materials exposed during construction activities that appear suspect of <br />contamination, either from visual staining or suspect odors, shall require immediate cessation of <br />excavation activities. Soils suspected of contamination shall be tested for potential <br />contamination. If contamination is found to be present per the California Department of Toxic <br />Substances Control (DTSC) or Regional Water Quality Control Board (RWQCB) ESLs for <br />residential uses, it shall be transported and disposed of per California Hazardous Waste <br />Regulations to an appropriately permitted landfill. <br /> A Health and Safety Plan (HSP) shall be prepared for each contractor that addresses potential <br />safety and health hazards and includes the requirements and procedures for employee <br />protection. The HSP shall also outline proper soil handling procedures and health and safety <br />requirements to minimize worker and public exposure to hazardous materials during <br />construction. <br /> All SMP measures shall be printed on the construction documents, contracts, and project plans <br />prior to issuance of grading permits. <br />Noise <br />Mitigation Measure NOI-1: The project plans and specifications shall include the following construction <br />requirements to be implemented and verified prior to provision of occupancy permits: <br /> Windows/Glass Doors: Residential units adjacent to N. Main Street (all floors) require upgraded <br />windows and sliding glass doors (all windows/doors on all floors) with minimum STC ratings of <br />30; and all other buildings require standards windows and sliding glass doors with a minimum <br />STC rating of 27. <br /> Exterior Doors (Non-Glass): Exterior doors facing N. Main Street (all floors) require upgraded <br />exterior doors with minimum STC ratings of 30 and shall be well weather-stripped; and all other <br />residential building exterior doors shall be well weather-stripped and have minimum STC ratings <br />of 27. Well-sealed perimeter gaps around the doors are essential to achieve the optimal STC <br />rating. <br /> Walls: At any penetrations of exterior walls by pipes, ducts, or conduits, the space between the <br />wall and pipes, ducts, or conduits shall be caulked or filled with mortar to form an airtight seal. <br /> Ventilation: Residential exterior vents shall be oriented away from I-5 and Main Street. If such <br />In Building Plans and <br />Specifications. Prior to Occupancy <br />Permits <br />City of Santa Ana Building and <br />Safety Division <br /> <br />2-112