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CONTAMINATION ANALYSES THROUGHOUT THE CENTRAL VALLEY AND NORTHERN CALIFORNIA GEORGE CONVERSE, PROJECT MANAGER, WILL DIRECT FIELD CHARACTERIZATION AND SAMPLING ACTIVITIES MR CONVERSE WILL ACT AS SITE SAFETY OFFICER MR. CONVERSE REPORTS DIRECTLY TO MR NAPPER, THEREBY GIVING MR NAPPER FULL AUTHORITY TO SUPERVISE HEALTH AND SAFETY OPERATIONS. MR. NAPPER CAN BE CONTACTED 24 HOURS PER DAY AT (916) 668-5300. MR CONVERSE CAN BE CONTACTED AT SITE DURING WORKING HOURS JOB HAZARD ANALYSES ALTHOUGH NO HAZARDOUS LEVELS OF FUEL HYDROCARBON VAPORS ARE EXPECTED, GASOLINE RANGE HYDROCARBONS HAVE BEEN DETECTED IN THE SOIL AND GROUNDWATER WATER AT THIS SITE A NEARBY SITE INVESTIGATION (LINCOLN CENTER) HAS FOUND TETRACHLOROETHYLENE (PCE) , TRICHLOROETHYLENE (TCE) AND CIS-1, 2-DICHLOROETHANE (DCE) IN THE GROUNDWATER WATER BENEATH LINCOLN CENTER GASOLINE AND ITS CONSTITUENTS ALONG WITH PCE, TCE AND DCE POSE HEALTH HAZARDS IN TWO MAJOR CLASSIFICATIONS . EXPLOSIVITY AND TOXICITY THE EXTREME FLAMMABILITY OF GASOLINE IS COMMONLY KNOWN. THE LOWER EXPLOSION LIMIT (LEL) OF GASOLINE VAPOR IS 1 3 PERCENT IN AIR IF THE CONCENTRATION OF GASOLINE VAPOR IN AIR EXCEEDS 1 . 3 PERCENT (13 , 000 PARTS PER MILLION) AND SUFFICIENT QUANTITIES OF OXYGEN ARE PRESENT, THEN THE INTRODUCTION OF SUFFICIENT HEAT, SPARK, OR FLAME WILL RESULT IN AN EXPLOSION DCE EXPLOSIVE LIMITS IN AIR RANGE FROM 5--160 AND TCE EXPLOSIVE LIMITS IN AIR RANGE FROM 5-10 50 PCE IS NONCOMBUSTIBLE A LESSER KNOWN HEALTH HAZARD RESULTING FROM EXPOSURE TO GASOLINE IS TOXICITY SEVERAL COMMON CONSTITUENTS OF GASOLINE HAVE BEEN LINKED TO VARIOUS HEALTH PROBLEMS THE CONSTITUENTS OF GASOLINE THAT HAVE BEEN SHOWN TO CAUSE SERIOUS HEALTH PROBLEMS RESULTING FROM RELATIVELY MINOR EXPOSURES INCLUDE BENZENE, TOLUENE, meta para, and Ortho XYLENES, ETHYL BENZENE, AND TETRAETHYL LEAD. i TYPICAL PERCENTAGES (BY WEIGHT) OF THESE CONSTITUENTS IN GASOLINE