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Appendix A <br /> Definitions <br /> asbestos - Six naturally occurring fibrous minerals found in certain types of rock formations. <br /> Of the six, the minerals chrysotile, amosite, and crocidolite have been most commonly used in <br /> building products. When mined and processed, asbestos is typically separated into very thin <br /> fibers. Because asbestos is strong, incombustible, and corrosion-resistant, asbestos was used in <br /> many commercial products early in this century and peaking in the period from World War II <br /> into 1970s. When inhaled in sufficient quantities, asbestos fibers can cause serious health <br /> problems. <br /> asbestos containing material (ACID - any material or product that contains more than 1 % <br /> asbestos. <br /> Comprehensive Environmental Response, Compensation, and Liability Information System <br /> (CERCLIS) - the list of sites compiled by EPA that EPA has investigated or is currently <br /> investigating for potential hazardous substance contamination for possible inclusion on the <br /> National Priorities List. <br /> construction debris-concrete, brick, asphalt, and other such building materials discarded in the <br /> construction of a building or other improvement to property. <br /> contaminated public wells-public wells used for drinking waster that have been designated by <br /> a government entity as contaminated by toxic substances (e.g., chlorinated solvents), or as <br /> having unsafe to drink without treatment. <br /> demolition debris- concrete, brick, asphalt, and other such building materials discarded in the <br /> demolition of a building or other improvement to property. <br /> drum - a container(typically, but not necessarily, holding 55 gal (208 L) of liquid) that may be <br /> used to store hazardous substances or petroleum products. <br /> cry wells - underground areas where soil has been removed and replaced with pea gravel, <br /> coarse sand, or large rocks. Dry wells are used for drainage, to control storm runoff, for the <br /> collection of spilled liquids (intentional and non-intentional) and wastewater disposal (often <br /> illegal). <br /> dwelling- structure or portion thereof used for residential habitation. <br /> environmental lien - a charge, security, or encumbrance upon title to a property to secure the <br /> payment of a cost, damage, debt, obligation, of duty arising out of response actions, cleanup, of <br /> other remediation of hazardous substances or petroleum products upon a property, including <br /> B&v Project 62041.100 Appendix A <br /> N:\62041\Phase-1.doc(1/27/99) 1 0 <br />