MO 2014-008 - Laserfiche WebLink

Home

• • Potentially • Significant Potentially Unless Less than • Significant Mitigation Significant impact Incorporated Impact No impact • Contractors are also required to determine the requirements for worker training, based on the level of expected contact to soil, soil vapor, and groundwater associated with the contractor's activities and locations. The HSP shall contain provisions for limiting and monitoring chemical exposure to construction workers, chemical and non-chemical • hazards, emergency procedures, and standard safety protocols. 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 andlor 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.) The control measures described below will help control the spread of COPCs. • • 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 certified laboratory prior to appropriate disposal. Decontamination procedures shall be developed and implemented by the construction contractor to minimize the possibility that equipment releases contaminated soil onto public roadways or to on-Site areas containing "clean"cover materials or new paving. • Personal Protective Equipment: Personal Protective Equipment(PPE)and clothing shall be used to isolate workers from COPCs and physical hazards. The minimum level of protection for workers coming into direct contact with contaminated materials will be Level D: o Coveralls or similar clothing, o Reflective safety vests, o Work gloves,as necessary, o Steel-toed boots, o Safety glasses,as necessary, o Hard hat,and • o Hearing protection,as necessary. • Dust Control: Construction operations will be conducted to minimize the creation and dispersion of dust, including the following measures: o Application of water while grading,excavating,and loading,as needed; o Limiting vehicle speeds to 15 miles per hour on unpaved portions of the Sites; o Minimizing drop heights while loading/unloading soil;and, o Soil that is suspected of being contaminated will be covered by an impermeable layer. o Additional dust control measures may be identified and implemented by contractors,as necessary,especially if dry and windy conditions persist during periods of earthwork. o Compliance with all Bay Area Alr Quality Management District rules and regulations. 14