Laserfiche WebLink
v WEISS ASSOCIATES K4 <br /> the calcium chloride solution stored in Tank 8 and in crystalline form in the chill water <br /> in Tank 7. Hexavalent chromium, a hazardous carcinogen, may be present with the <br /> sodium dichromate. solutions. When sodium dichromate. is heated sufficiently to cause <br /> decomposition, toxic NA20 fumes may be emitted. Its TLV is 0.05 M.G./ms, and its <br /> Permissible Exposure Limit (PEL) is 0.5 M.G./ms. <br /> 1.1.3 Calcium Chloride <br /> Calcium chloride, also an inorganic salt used for plant refrigeration, is stored in <br /> Tank 8. This chemical is a non-flammable, non-hazardous, water-soluble liquid with a <br /> vapor pressure of 6.8 mm of Mercury at 60oF. Toxic chlorine (CI-) vapors may be emitted <br /> if calcium chloride is heated to decomposition. <br /> 1.1.4 Copper Sulfate <br /> Copper sulfate may have been stored in Tanks 7 and 8. This chemical occurs in <br /> crystalline form and is moderately hazardous if inhaled. Ingestion of large amounts (>20 <br /> M.G.) may cause vomiting, convulsions, coma and death. Toxic fumes of SOx are emitted <br /> when copper sulfate is heated to decomposition. <br /> 1.1.5 Respiratory Hazards <br /> The respiratory hazards associated with the site are primarily from the soil boring, <br /> where the possibility exists for: <br /> o Release of hazardous vapors during boring. <br /> o Suspension of large quantities of dust and suspended particles. <br /> o Oxygen depletion. <br /> The following precautions will be taken to guard against these hazards: <br /> 1) Workers will wear protective clothing and respirators that filter particulates. <br /> Page S <br /> W P 1F:\ALL\ga1D W G\aa1R1AP$.DOC:74-Sal-OO:V 3.058 <br />