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SITE-SPECIFIC HEALTH AND SAFETY PLAN FOR PHASE II ENVIRONMENTAL SITE ASSESSMENT <br /> Potential Airborne Concerns and Air Monitoring Action Levels <br /> July 7, 2023 <br /> Potential Airborne Concerns <br /> Chemical (Or OSHA PEL Warning Routes of Chronic Health <br /> Class) ACGIH TLV Other Pertinent Limits Properties Exposure or Acute Health Effects Effects/Target <br /> Irritation Organs <br /> Ethylbenzene Cal/FedOSHA PEL- eNIOSH REL 100 Sweet, pungent Inhalation, dermal, Skin/eye/mucous Eyes, respiratory <br /> TWA 100 ppm ppm; aromatic odor ingestion, eyes membrane irritant, tract, skin, CNS, <br /> • CaIOSHA STEL(15 NIOSH STEL(15 headache, dizziness, blood, kidneys, liver. <br /> MIN) 125 ppm MIN) 125 ppm drowsiness <br /> • FedOSHA STEL • IDLH 800 ppm <br /> (15 MIN) 125 ppm <br /> • ACGIH TLV 100 <br /> ppm <br /> Total Xylenes 0 Cal/FedOSHA PEL- • TLV STEL(15 Pungent, Inhalation, Throat and skin irritant CNS, liver, kidneys, <br /> TWA 100 ppm MIN) 150 ppm aromatic odor dermal, ingestion, (dermatitis), headache, skin, gastrointestinal <br /> • CaIOSHA C 300 • NIOSH REL 100 eyes e <br /> damage, eye damage <br /> m nausea, drowsiness, g y g <br /> pp ppm <br /> NIOSH STEL• CaIOSHA STEL(15 ( <br /> MIN) 150 ppm MIN) 100 ppm <br /> • ACGIH TLV 100 NIOSH IDLH 900 <br /> m ppm <br /> Methyl Tertiary • CaIOSHA PEL- AIHA WEEL 100 Extremely Inhalation, dermal, Irritated nose,throat, CNS, liver, kidney, <br /> Butyl Ether TWA 40 ppm ppm• flammable liquid ingestion headache, dizziness, gastrointestinal <br /> (MTBE) 0 FedOSHA PEL- with offensive nausea, sleepiness damage, potential <br /> TWA None odor carcinogen <br /> Established <br /> • ACGIH TLV 540 <br /> m <br /> Tert Butyl • Cal/FedOSHA PEL- Colorless solid or Inhalation, Irritation to eyes, skin, Eyes, skin, <br /> Alcohol TWA 100 ppm liquid with a ingestion, respiratory tract, mucous respiratory tract and <br /> (TBA) • Cal/FedOSHA camphor like odor absorption through membranes. mucous membranes <br /> STEL(15 MIN) 150 the skin or eye <br /> ppm <br /> • ACGIH TLV 100 <br /> ppm <br /> • ACGIH TLV STEL <br /> 15 MIN 150 ppm <br /> Stantec <br /> 4.2 <br />