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Kennedy/Jenks Consultants <br /> Table 4: Chemical Allowable Exposure Values and Exposure Symptoms <br /> CaIOSHA CaIOSHA <br /> Chemical TLV TWA(a) STEL(b) PEL(`) Acute Exposure Symptoms(d) Target Organs(d) <br /> Lead 0.05 mg/m NE a 0.05 mg/m3 Lassitude(weakness, exhaustion), Eyes, gastrointestinal tract,central nervous <br /> insomnia;facial pallor; anorexia,weight loss, system, kidneys, blood,gingival tissue <br /> malnutrition;constipation, abdominal pain, <br /> colic;anemia;gingival lead line;tremor; <br /> paralysis wrist, ankles; encephalopathy; <br /> kidney disease; irritation eyes; hypotension <br /> Benzene 0.5 ppm 5 ppm 1 ppm Irritant to eyes, nose respiratory system Skin , liver,kidneys, respiratory system, <br /> nausea cardiovascular system, central nervous <br /> system <br /> Ethylbenzene 100 ppm 125 ppm 100 ppm Irritant to eyes, mucous membranes, Skin, liver, kidneys, respiratory system, <br /> dermatitis,narcosis coma cardiovascular system,central nervous <br /> system <br /> Toluene 50 ppm 300 ppm 100 ppm Fatigue,weakness, confusion, euphoria, Central nervous system, liver, kidneys, skin <br /> ceiling dizziness headache dilated pupils <br /> Xylene 100 ppm 150 ppm 100 ppm Dizziness,excitement,vomiting Central nervous system, eyes, GI tract, <br /> blood, liver, kidneys, skin <br /> 1,1-dichloroethane 200 ppm NE 100 ppm CNSe depression;skin irritation; liver, kidney, Skin,liver, kidneys, lung,CNS <br /> (1,1-DCA) luno damage <br /> 1,1,1-trichloroethane 350 ppm 450 ppm 350 ppm Irritated eyes,skin;headache; lassitude;CNS Eyes,skin,CNS,CVS liver <br /> (1,1,1-TCA,methyl depression;poor equilibrium;cardiac <br /> chloroform) arrhythmias;liver damage <br /> (a) TLV-TWA=Threshold Limit Value-8 hr.Time Weighted Average. TLV-TWA reported in ppm represents parts of vapor per million parts of air by volume at <br /> 25°C and 760 torr.TLV-TWA reported in mg/m3 represents milligrams of substance per cubic meter of air. <br /> (b) STEL=Short Term Exposure Limit. <br /> (c) PEL= Permissible Exposure Level based on 8 hour time weighted average. <br /> (d) Source: U.S. Department of Health and Human Services. NIOSH Pocket Guide to Chemical Hazards.June 1994. <br /> Sittig, Marshall. 1985. Handbook of Toxic and Hazardous Chemicals and Carcinogens. Park Ridge, New Jersey. Noyes Publications. <br /> (e) NE= not established. <br /> (f) "Skin"notation indicates route of exposure through cutaneous absorption. <br /> Site Health and Safety Plan Page 1 of 1 <br /> Former Tracy Railyard, Tracy, California <br /> g:Vs-groupladn inl ob105\0565777.03_upnW9-reports\work planld finallappendiceMappc_hasplappc text.doc <br />