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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 />Chromium (VI)
<br />compounds,
<br />insoluble
<br />----0.5
<br />mg/m3
<br />NL 0.01
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Respiratory system irritation, nasal septum perforation, liver,
<br />kidney damage, increased leukocytes, leukopenia,
<br />monocytosis, skin ulcer, sensitive skin, conjunctivitis
<br />NL
<br />Cobalt, metal
<br />dust, as Co
<br />----0.02
<br />mg/m3
<br />NL 0.02
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Coughing, dyspnea, wheezing, decreased pulmonary
<br />function, low eight, dermatitis, diffuse nodular
<br />fibrosis, respiratory hypersensitivity, asthma
<br /> Skin, respiratory system
<br />Copper salts,
<br />dusts, and
<br />mists, as Cu
<br />----1
<br />mg/m3
<br />NL 1
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Irritation eyes, nose, pharynx, nasal perforation, metallic taste,
<br />dermatitis, in animals: lung, liver, kidney damage, anemia
<br />Eyes, skin, respiratory system,
<br />liver, kidneys, (increased risk
<br />with Wilson's disease)
<br />Lead, elemental and
<br />inorganic compounds,
<br />dust and fume, as Pb
<br />----0.05
<br />mg/m3
<br />NL 0.05
<br />mg/m3
<br />Inhalation, ingestion,
<br />contact
<br />Weakness, lassitude, insomnia, facial pallor, pal eye, anorexia,
<br />low weight, malnutrition, constipation, pain, colic, anemia,
<br />gingival lead line, tremor, paralysis wrist, ankles,
<br />encephalopathy, kidney disease, irritation eyes, hypertension
<br />Eyes, gastrointestinal tract,
<br />central abdominal nervous
<br />system, kidneys, blood,
<br />gingival tissue
<br />Manganese, elemental
<br />and inorganic
<br />compounds, as Mn
<br />----0.2
<br />mg/m3
<br />NL 0.02
<br />mg/m3
<br />NL Central nervous system impairment Central nervous system
<br />Mercury, inorganic
<br />forms including
<br />metallic Hg
<br />----0.025
<br />mg/m3
<br />NL 0.025
<br />mg/m3
<br />Inhalation, absorption,
<br />ingestion, contact
<br />Irritation eyes, skin, coughing, chest pain, dyspnea,
<br />bronchitis pneumonitis, tremors, insomnia, irritability,
<br />indecision, headache, fatigue, weakness, stomatitis,
<br />salivation, gastrointestinal disturbance, anorexia,
<br />low weight, proteinuria
<br />Eyes, skin, respiratory system,
<br />central nervous system, kidneys
<br />Mercury (organo)
<br />alkyl compounds,
<br /> as Hg
<br />----0.01
<br />mg/m3
<br />0.03
<br />mg/m3
<br />0.01
<br />mg/m3
<br />Inhalation, absorption,
<br />ingestion, contact
<br />Paresthesia, ataxia, dysarthria, vision, hearing disturbance,
<br />spasticity, jerking limbs, dizziness, salivation, lacrimation,
<br />nausea, vomiting, diarrhea, constipation, skin burns,
<br />emotional disturbance, kidney injury, possible teratogenic
<br />Eyes, skin, central nervous
<br />system, peripheral nervous
<br />system, kidneys
<br />EKI B90047.00 Page 7 of 9 EKI Environment & Water, Inc.
<br />May 2019
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