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TABLE 1
<br />Maximum Concentrations and Allowable Chemical Exposure Limits and Exposure Symptoms
<br />
<br />PEL (a)STEL (b)TLV (c)
<br />Soil
<br />(mg/kg)
<br />Groundwater
<br />(ug/L)(ppmv)(ppmv)(ppmv)
<br />Lathrop, California
<br />Former Pilkington North America Site
<br />ROUTE OF ENTRY TARGET ORGANSACUTE EXPOSURE SYMPTOMSCHEMICAL
<br />Maximum Concentrations
<br />Metals
<br />Molybdenum, insoluble
<br />compounds, as Mo
<br />----3
<br />mg/m3
<br />NL 3
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />For metallic Mo - In animals: irritation eyes, nose, throat,
<br />anorexia, diarrhea, low weight, listlessness, liver,
<br />kidney damage
<br />Eyes, respiratory system, liver,
<br />kidneys
<br />Molybdenum, soluble
<br />compounds, as Mo
<br />----0.5
<br />mg/m3
<br />NL 0.5
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />In animals: irritation eyes, nose, throat, anorexia,
<br />incoordination, dyspnea, anemia
<br />Eyes, respiratory system, kidneys,
<br />blood
<br />Nickel metal, as Ni ----0.5
<br />mg/m3
<br />NL 1.5
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Sensitive skin, allergic asthma, pneumonitis,
<br />(potential occupational carcinogen)
<br />Nasal cavities, lungs, skin,
<br />(lung and nasal cancer)
<br />Nickel, insoluble
<br />compounds, as Ni
<br />----0.1
<br />mg/m3
<br />NL 0.2
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Sensitization dermatitis, allergic asthma, pneuitis,
<br />(potential occupational carcinogen)
<br />Nasal cavities, lungs, skin,
<br />(lung and nasal cancer)
<br />Nickel, soluble
<br />compounds, as Ni
<br />----0.05
<br />mg/m3
<br />NL 0.1
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Sensitization dermatitis, allergic asthma, pneuitis,
<br />(potential occupational carcinogen)
<br />Nasal cavities, lungs, skin,
<br />(lung and nasal cancer)
<br />Selenium and
<br />compounds, as Se
<br />----0.2
<br />mg/m3
<br />NL 0.2
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Irritation eyes, skin, nose, throat, vision disturbance, fever,
<br />dyspnea, bronchitis, metallic taste, garlic breath,
<br />gastrointestinal disturbance, dermatitis, eye, skin burns,
<br />headache, chills, in animals: anemia, liver necrosis,
<br />cirrhosis, kidney, spleen damage
<br />Eyes, skin, respiratory system,
<br />liver, kidneys, blood, spleen
<br />Silver ----0.01
<br />mg/m3
<br />NL 0.1
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Blue-gray eyes, nasal septum, throat, skin, irritation,
<br />ulceration skin, Gastrointestinal disturbance
<br />Nasal septum, skin, eyes
<br />Thallium, elemental
<br />and soluble
<br />compounds, as Tl
<br />----0.1
<br />mg/m3
<br />NL 0.02
<br />mg/m3
<br />Inhalation, absorption,
<br />ingestion, contact
<br />Nausea, diarrhea, abdominal pain, vomiting, strabismus,
<br />peripheral neuritis, tremor, retrosternal tightness,
<br />chest pain, pulmonary edema, seizure, chorea, psychosis,
<br />liver, kidney damage, alopecia, paresthesia in the legs
<br />Eyes, respiratory system, central
<br />nervous system, liver kidneys,
<br />gastrointestinal tract, body hair
<br />Vanadium ----0.05
<br />mg/m3
<br />NL 0.05
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Irritation eyes, skin, throat, green tongue, metallic taste,
<br />eczema, cough, fine rales, wheezing, bronchitis, dyspnea
<br />Eyes, skin, respiratory system
<br />Zinc oxide dust
<br />(as total nuisance dust)
<br />----5
<br />mg/m3
<br />10
<br />mg/m3
<br />2
<br />mg/m3
<br />Inhalation Metal fume fever, chills, muscle ache, nausea, fever, dry
<br />throat, coughing, weakness, lassitude, metallic taste,
<br />headache, blurred vision, low back pain, vomiting, fatigue,
<br />malaise, tight chest, dyspnea, rales, decreased pulmonary
<br />function
<br />Respiratory system
<br />EKI B90047.00 Page 8 of 9 EKI Environment & Water, Inc.
<br />May 2019
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