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SAN JOAQUIN DELTA COLLEGE <br /> PRODUCT OR MATERIAL COMPONENTS <br /> 1 Gasoline Benzene (12 AlphaticHydrocarbods � SEP �J pt] <br /> 7 <br /> Paraffins <br /> Cycloparaffins <br /> Aromatics <br /> TABLE I <br /> From Table 1, Chemicals In Gasoline, the components to be sampled were determined The chemicals sampled were the <br /> NIOSH 1500 chemicals(benzene,cyclohexane,cyclohexene,heptane,hexane,methylcyclohexane,octane,pentane,toluene) <br /> The sample pumps - personal air monitoring systems - were Sensidyne Model BDX 44 permissible air sampling pumps <br /> approved by the Mine Safety And Health Administration (MSHA)or SKC Personal Mmm Pumps Sample tubes for organics <br /> were the appropriate NIOSH type coconut shell charcoal tube supplied by SKC The sample pumps were calibrated pnor to <br /> air sampling using a Sensndyne EZ Cal 1 Digital Flowmeter(Primary Calibrator)and were checked with a Field Rotameter <br /> before and after sampling <br /> The site plan for San Joaquin County Delta College is provided in the Diagram Section The sample tube, range, <br /> catalog number, lot number and expiration date are listed below <br /> Tube/Badge/Cassette Range Catalog# Lot# Expiration Date <br /> Organics 226-01 2000 NIA* <br />. Table II lists the materials to be sampled and the sampling procedures per the NIOSH Manual of Analytical Methods, <br /> Method 1500-Hydrocarbons with BP 36-126°C <br /> CHEMICALS AND SAMPLING PROCEDURES <br /> Chemical Method Sample Tube Sample Flow Rate Threshold Sens <br /> or Time (ppm-hr <br /> 1 Organics Absorbent Tube Coconut Shell Charcoal --3 1/min NIA <br /> TABLE II <br /> On site sampling dates/tunes and the number of samples collected for each chemical are listed below <br /> Date Approximate Time sampling Chemical #of Sam les <br /> 08/20100 1 OOP-5 30P Air NIOSH 10 <br /> 08/20/00 1 OOP-5 30P Water TPH,BTEX 8 <br /> Volatile organic compounds, NIOSH Method 1500 (Benzene, Cyclohexane, Cyclohexene, n-Heptane, n-Hexane, <br /> Methylcyclohexmie,n-Octane,n-Pentane,Toluene),were collected using SKC single stage activated charcoal Sampling tubes _ <br /> 16 fitted to calibrated low flow sampling pumps as previously described <br /> Page #2 <br />