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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 />Semivolatile Organic Compounds (SVOCs) <br />Benzyl butyl phthalate ----NL NL NL NL NL NL <br />Bis(2-ethylhexyl) <br />phthalate <br />(Di-sec octyl phthalate) <br />----5 <br />mg/m3 <br />NL 5 <br />mg/m3 <br />Inhalation, ingestion, <br />skin and/or eye contact <br />Irritation eyes, mucous membrane, in animals: liver damage, <br />teratogenic effects, (potential occupational carcinogen) <br />Eyes, respiratory system, <br />central nervous system, liver, <br />reproductive system, <br />gastrointestinal tract <br />Dibenzofuran ----NL NL NL NL NL NL <br />Di-n-Octyl Phthalate ----NL NL NL NL NL NL <br />2-Methylnaphthalene ----NL NL 0.5 Inhalation, contact NL NL <br />Naphthalene ----0.1 15 10 Inhalation, ingestion, <br />contact <br />Irritation eyes, nose, throat, respiratory sensitization, cough, <br />pulmonary secretions, chest pain, dyspnea, asthma <br />Eyes, respiratory system <br />Polynuclear Aromatic Hydrocarbons (PAHs) <br />Coal Tar Pitch Volatiles ----0.2 <br />mg/m3 <br />NL 0.2 <br />mg/m3 <br />Inhalation, contact Dermatitis, bronchitis, (potential occupational carcinogen)Respiratory system, skin, bladder, <br />kidneys, lung, kidney and <br />skin cancer <br />Including: ---- <br />Acenaphthene ---- <br />Acenaphthylene ---- <br />Anthracene ---- <br />Benzo(a)anthracene ---- <br />Benzo(a)pyrene ---- <br />Benzo(b)fluoranthene ---- <br />Benzo(g,h,i)perylene ---- <br />Benzo(k)fluoranthene ---- <br />Chrysene ---- <br />Dibenz(a,h)Anthracene ---- <br />Fluoranthene ---- <br />Fluorene ---- <br />Indeno(1,2,3-c,d)pyrene ---- <br />Phenanthrene ---- <br />Pyrene ---- <br />EKI B90047.00 Page 4 of 9 EKI Environment & Water, Inc. <br />May 2019