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Hazards & Hazardous Materials (Continued)
<br />Contractors are also required to determine the requirements for worker training, based on the level of expected
<br />contact to soil, soil vapor, and groundwater associated with the contractor's activities and locations. The HSP
<br />shall contain provisions for limiting and monitoring chemical exposure to construction workers, chemical and
<br />non -chemical hazards, emergency procedures, and standard safety protocols. Depending upon known conditions
<br />at the time of site development, employees conducting earthwork activities at the Site may be required to
<br />complete a 40 -hour HAZWOPER training course (29 CFR 1910.120 (e)), including respirator and personal
<br />protective equipment training.
<br />• Construction Impact Mitigation Measures: During construction, measures shall be taken by contractors to
<br />minimize dust generation, storm water runoff and tracking of soil off the Sites. In addition, measures will be
<br />taken to reduce the potential for the creation of preferential pathways (vertical or horizontal) for COPCs
<br />detected at the Sites during the planned subsurface investigations of soil, soil gas and/or groundwater beneath
<br />the Sites. Construction impact mitigation measures are described below.
<br />Site Control: Site control procedures shall be implemented to control the flow of personnel, vehicles and
<br />materials in and out of the Sites while working in known contaminated areas. (Currently, there are no known
<br />contaminated areas at either of the Sites.) The control measures described below will help control the spread of
<br />COPCs from the Sites. The perimeter of the Sites shall be fenced. Access and egress shall be controlled at the
<br />appropriate locations. Signs will be posted instructing visitors to sign in at the project support areas at all Site
<br />entrances.
<br />Equipment Decontamination: Contractors whose vehicles and construction equipment contact soil that is
<br />suspected of being contaminated shall be required to clean the equipment upon leaving the contaminated area.
<br />A decontamination area will be established near the construction exit of each area. Soil will be removed from
<br />the equipment and vehicles before leaving the contaminated area. Cleaning methods used may include dry
<br />methods, such as brushing, scraping, or vacuuming. If dry methods are not effective, wet methods, such as steam
<br />cleaning or pressure -washing, should be used. The contractor will contain, manage, and collect samples of the
<br />rinse water for analytical testing by a state certified laboratory prior to appropriate disposal. Decontamination
<br />procedures shall be developed and implemented by the construction contractor to minimize the possibility that
<br />equipment releases contaminated soil onto public roadways or to on -Site areas containing "clean" cover
<br />materials or new paving.
<br />• Personal Protective Equipment: Personal Protective Equipment (PPE) and clothing shall be used to isolate
<br />workers from COPCs and physical hazards. The minimum level of protection for workers coming into direct
<br />contact with contaminated materials will be Level D:
<br />o Coveralls or similar clothing,
<br />o Reflective safety vests,
<br />o Work gloves, as necessary,
<br />o Steel -toed boots,
<br />o Safety glasses, as necessary,
<br />o Hard hat, and
<br />o Hearing protection, as necessary.
<br />• Dust Control: Construction operations will be conducted to minimize the creation and dispersion of dust,
<br />including the following measures:
<br />o Application of water while grading, excavating, and loading, as needed;
<br />o Limiting vehicle speeds to 15 miles per hour on unpaved portions of the Sites;
<br />o Minimizing drop heights while loading/unloading soil; and,
<br />o Soil that is suspected of being contaminated will be covered by an impermeable layer.
<br />Cornerstone at San Leandro Crossings Initial Study 18 March 2009
<br />POTENTIALLY
<br />ISSUES
<br />POTENTIALLY
<br />SIGNIFICANT
<br />LESS THAN
<br />NO
<br />SIGNIFICANT
<br />UNLESS
<br />SIGNIFICANT
<br />IMPACT
<br />SOURCES
<br />ISSUES
<br />MITIGATION
<br />IMPACT
<br />INCORPORATED
<br />Hazards & Hazardous Materials (Continued)
<br />Contractors are also required to determine the requirements for worker training, based on the level of expected
<br />contact to soil, soil vapor, and groundwater associated with the contractor's activities and locations. The HSP
<br />shall contain provisions for limiting and monitoring chemical exposure to construction workers, chemical and
<br />non -chemical hazards, emergency procedures, and standard safety protocols. Depending upon known conditions
<br />at the time of site development, employees conducting earthwork activities at the Site may be required to
<br />complete a 40 -hour HAZWOPER training course (29 CFR 1910.120 (e)), including respirator and personal
<br />protective equipment training.
<br />• Construction Impact Mitigation Measures: During construction, measures shall be taken by contractors to
<br />minimize dust generation, storm water runoff and tracking of soil off the Sites. In addition, measures will be
<br />taken to reduce the potential for the creation of preferential pathways (vertical or horizontal) for COPCs
<br />detected at the Sites during the planned subsurface investigations of soil, soil gas and/or groundwater beneath
<br />the Sites. Construction impact mitigation measures are described below.
<br />Site Control: Site control procedures shall be implemented to control the flow of personnel, vehicles and
<br />materials in and out of the Sites while working in known contaminated areas. (Currently, there are no known
<br />contaminated areas at either of the Sites.) The control measures described below will help control the spread of
<br />COPCs from the Sites. The perimeter of the Sites shall be fenced. Access and egress shall be controlled at the
<br />appropriate locations. Signs will be posted instructing visitors to sign in at the project support areas at all Site
<br />entrances.
<br />Equipment Decontamination: Contractors whose vehicles and construction equipment contact soil that is
<br />suspected of being contaminated shall be required to clean the equipment upon leaving the contaminated area.
<br />A decontamination area will be established near the construction exit of each area. Soil will be removed from
<br />the equipment and vehicles before leaving the contaminated area. Cleaning methods used may include dry
<br />methods, such as brushing, scraping, or vacuuming. If dry methods are not effective, wet methods, such as steam
<br />cleaning or pressure -washing, should be used. The contractor will contain, manage, and collect samples of the
<br />rinse water for analytical testing by a state certified laboratory prior to appropriate disposal. Decontamination
<br />procedures shall be developed and implemented by the construction contractor to minimize the possibility that
<br />equipment releases contaminated soil onto public roadways or to on -Site areas containing "clean" cover
<br />materials or new paving.
<br />• Personal Protective Equipment: Personal Protective Equipment (PPE) and clothing shall be used to isolate
<br />workers from COPCs and physical hazards. The minimum level of protection for workers coming into direct
<br />contact with contaminated materials will be Level D:
<br />o Coveralls or similar clothing,
<br />o Reflective safety vests,
<br />o Work gloves, as necessary,
<br />o Steel -toed boots,
<br />o Safety glasses, as necessary,
<br />o Hard hat, and
<br />o Hearing protection, as necessary.
<br />• Dust Control: Construction operations will be conducted to minimize the creation and dispersion of dust,
<br />including the following measures:
<br />o Application of water while grading, excavating, and loading, as needed;
<br />o Limiting vehicle speeds to 15 miles per hour on unpaved portions of the Sites;
<br />o Minimizing drop heights while loading/unloading soil; and,
<br />o Soil that is suspected of being contaminated will be covered by an impermeable layer.
<br />Cornerstone at San Leandro Crossings Initial Study 18 March 2009
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