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Kennedy/Jenks Consultants <br />Table 3: Chemical Allowable Exposure Values and Exposure Symptoms <br />Chemical TLV TWA(a) <br />CalOSHA <br />STEL(b) <br />CalOSHA <br />PEL(b) Acute Exposure Symptomsm <br />Diesel 15 ppm Not <br />Established <br />None est. Irritation of eyes, skin, mucous membranes, blurred <br />vision, headache, slurred speech <br />Gasoline 300 ppm 500 ppm None est. Irritation of eyes, skin, mucous membranes, blurred <br />vision, headache, slurred speech <br />Lead 50 ppm Not <br />Established <br />50 ppm Weakness. headache, anemia, insomnia <br />Target Organs(c) <br />Kidneys, liver, respiratory tract, <br />skin, eyes <br />Eyes, skin, respiratory system <br />Central nervous system, <br />gastrointestinal system, blood, <br />kidneys, gingival tissue <br />Notes: <br />TLV TWA = threshold limit value — 8-hour time-weighted average. <br />STEL = short term exposure limit. <br />American Conference of Governmental Industrial Hygienists. TLV and Biological Exposure Indices for 1997. <br />TLV TWA reported in ppm represents parts of vapor per million parts of air by volume at 25 degrees Celsius (°C) and 760 torr. TLV - TWA reported in <br />milligrams per cubic meter (mg/m3) represents milligrams of substance per cubic meter of air. <br />PEL = Federal Occupational Safety and Health Administration (OSHA) (29 CFR 1910 Subpart Z) Permissible Exposure Level based on 8-hour time weighted <br />average. <br />Source: U.S. Department of Health and Human Services. National Institute for Occupational Safety and Health (NIOSH) Pocket Guide to Chemical Hazards. <br />June 1994. Sittig, Marshall. 1985. Handbook of Toxic and Hazardous Chemicals and Carcinogens. Park Ridge, New Jersey. Noyes Publications. <br />Skin notation indicates route of exposure through cutaneous absorption. <br />CNS = central nervous system. <br />ppm = parts per million <br />IDLH = immediately dangerous to life and health <br /> <br /> <br /> <br />BNSF Mormon Yard — Soil Sampling HASP <br />Mormon Yard, Stockton, California <br />Kennedy/Jenks Consultants©, March 2015 <br />11sfocad \projects1is-proj1201311365020.01_bnsf stockton work plan12016 hrsc work plan appendiceslappendixb_hasp12016_hasp_2015content_fingdocx <br />Page 1 of 1