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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 /> 4.0 POTENTIAL AIRBORNE CONCERNS AND AIR MONITORING ACTION <br /> LEVELS <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 /> TPHg 0 CaIOSHA PEL- Clear liquid with a Inhalation,skin Irritation eyes, skin, Eyes, skin, <br /> TWA 300 ppm; characteristic absorption, mucous membrane; respiratory system, <br /> CaIOSHA STEL(15 odor ingestion, skin dermatitis; headache, central nervous <br /> min)500 ppm and/or eye contact fatigue, blurred vision, system, liver, kidneys <br /> • FedOSHA PEL dizziness, slurred speech, <br /> None Established confusion, convulsions; <br /> • ACGIH TLV-TWA chemical pneumonia <br /> 300 ppm;ACGIH (aspiration liquid); possible <br /> STEL 500 ppm liver, kidney damage; <br /> [Potential occupational <br /> carcinogen] <br /> Benzene 0 Cal/FedOSHA PEL- • NIOSH REL 0.1 Characteristic Inhalation, dermal, Skin (dermatitis), eye, Carcinogen, CNS, <br /> (1910.1028) TWA 1.0 ppm ppm benzene odor ingestion, eyes respiratory tract irritant, eye damage, bone <br /> • Cal/FedOSHA • IDLH 500 ppm headache, dizziness, marrow, blood, skin. <br /> STEL(15 MIN)5.0 nausea. <br /> ppm <br /> • ACGIH TLV 0.5 <br /> m skin <br /> Toluene 0 CaIOSHA PEL- • NIOSH REL 100 Sweet, pungent, Inhalation, dermal, Skin (dermatitis)eye, CNS, liver, kidneys, <br /> TWA 50 ppm ppm aromatic odor ingestion, eyes respiratory tract irritant, skin. <br /> • CaIOSHA C 500 NIOSH STEL(15 headache, dizziness, <br /> ppm MIN) 150 ppm weakness, and fatigue. <br /> CaIOSHA STEL(15 • NIOSH IDLH 500 <br /> MIN) 150 ppm ppm <br /> • FedOSHA PEL- <br /> TWA 200 ppm <br /> • FedOSHA C 300 <br /> ppm <br /> • ACGIH TLV 50 ppm <br /> Stantec <br /> 4.1 <br />