3B Public Hearing 2009 0720 - Laserfiche WebLink

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CORNERSTONE AT SAN LEANDRO CROSSINGS DRAFT MITIGATION MONITORING AND REPORTING PLAN IMPACT MITIGATION MEASURES REQUIRED MONITORING RESPONSIBILITY TIMING Hazards & Hazardous Materials (Continued) Mitigation Measure #23 (Continued) activities and locations. The HSP shall contain provisions for limiting and Community Development and Prior to Issuance of monitoring chemical exposure to construction workers, chemical and non- Environmental Services Grading Permit chemical hazards, emergency procedures, and standard safety protocols. Departments Depending upon known conditions at the time of site development, employees conducting earthwork activities at the Site may be required to complete a 40 - hour HAZWOPER training course (29 CFR 1910.120 (e)), including respirator and personal protective equipment training_ Construction Impact Mitigation Measures: During construction, measures shall be taken by contractors to minimize dust generation, storm water runoff and tracking of soil off the Sites_ In addition, measures will be taken to reduce the potential for the creation of preferential pathways (vertical or horizontal) for COPCs detected at the Sites during the planned subsurface investigations of soil, soil gas and/or groundwater beneath the Sites. Construction impact mitigation measures are described below, Site Control: Site control procedures shall be implemented to control the flow of personnel, vehicles and materials in and out of the Sites while working in known contaminated areas. (Currently, there are no known contaminated areas at either of the Sites.) The control measures described below will help control the spread of COPCs from the Sites. The perimeter of the Sites shall be fenced_ Access and egress shall be controlled at the appropriate locations. Signs will be posted instructing visitors to sign in at the project support areas at all Site entrances. Equipment Decontamination: Contractors whose vehicles and construction equipment contact soil that is suspected of being contaminated shall be required to clean the equipment upon leaving the contaminated area. A decontamination area will be established near the construction exit of each area. Soil will be removed from the equipment and vehicles before leaving the contaminated area. Cleaning methods used may include dry methods, such as brushing, scraping, or vacuuming. If dry methods are not effective, wet methods, such as steam cleaning or pressure -washing, should be used. The contractor will contain, manage, and collect samples of the rinse water for analytical testing by a state