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F <br /> Phase II Site Assessment Workplan/Health and Safety Plan October 1999 <br /> for the Hammer Lane/Highway 99 Interchange Improvement Project Project No. H202 <br /> The potential chemicals of concern include petroleum products, heavy metals, and chlorinated <br /> hydrocarbons associated with former service stations. Chemicals anticipated include: <br /> Benzene: A clear colorless liquid with a specific gravity less than water and a moderately high <br /> water solubility. Benzene exhibits a low boiling point and high vapor pressure. <br /> Toluene: A colorless liquid with a benzol-like odor having a specific gravity less than water. <br /> Toluene is insoluble in water and exhibits a moderately high boiling point and relatively low <br /> vapor pressure. <br /> Xylenes: A colorless liquid having a specific gravity less than water. Xylenes are insoluble <br /> in water and exhibit a high boiling point and a relatively moderate vapor pressure. <br /> Ethylbenzene: A colorless liquid with an aromatic odor having a specific gravity less than <br /> water. Ethylbenzene is insoluble in water and exhibits a high boiling point and a relatively <br /> moderate vapor pressure. <br /> Perchlorethylene: A colorless liquid with a mild, chloroform-like odor having a specific <br /> gravity greater than water. Perchlorethylene is has a low solubility in water and exhibits a high <br /> boiling point and relatively moderate vapor pressure. <br /> Trichloroethene: A colorless liquid with a mild, chloroform-like odor having a specific <br /> gravity greater than water. Trichloroethene is has a low solubility in water and exhibits a high <br /> boiling point and relatively moderate vapor pressure. <br /> 5. List of Known Physical Hazards (i.e., heavy traffic areas, overhead construction areas, <br /> work around excavations, work inside buildings, etc.) <br /> Hazard Description Location Procedures to <br /> Reduce Hazard <br /> Overhead Electric Site boundaries Check <br /> Traffic Adjacent Roads Site boundaries No work in street <br />' 6. Planned Site Activities (Be specific, identify personnel per task and include expected start <br /> date of activities.) <br /> E 6 <br /> £SPANA GEOTECHNICAL CONSULTING <br />} <br />