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♦ City Inspections Department and local well contractors. , <br /> Another way in which to identify unsealed wells is to look for clues: some clues are: <br /> ♦ windmills, usually would use wind power to draw water out of a well <br /> ♦ unaccounted for pipes or areas in the foundation where pipes used to run <br /> ♦ the building was constructed and occupied prior to municipal water being available to that area <br /> ♦ well pits or shacks <br /> a magnetometer may be used to identify metallic objects within 3-4 feet underground <br /> �:.»::>::;::..:::: :::>.>:.::. : <br /> , <br /> ' _ _ _ ...��RI��RAI�ITS�C`�CslHC`�`�s ,...... <br /> •CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons) are man-made refrigerants <br /> that destroy the ozone layer. <br /> •CFCs and HCFCs must not be released into the atmosphe:e. These refrigerants must be <br /> recovered by technicians certified by a U.S. EPA approved program using proper refrigerant <br /> recovery equipment. <br /> • Esamples of appliances that contain CFCs and HCFCs include: <br /> ♦ refrigerators ♦ dehumidifiers ♦ central air conditioners <br /> ♦ room air conditioners ♦ vending machines ♦ heat pumps <br /> ♦ freezers ♦ chillers ♦ ice machines <br /> ♦ food display cases ♦ water coolers <br /> •Refrigerant substitutes (including HFC-134a) must also be recovered and not vented to the <br /> atmosphere. <br /> ' �IRE �X'�`I1�I�IT�S��RS� <br /> •Some fire estinguishers contain halons which destroy the ozone layer. <br /> •Halons must be recaptured `vhen recharging, servicing, or retirin�the unit. There are a number <br /> of companies in Minnesota that have the proper halon recovery equipr�Qnt. � <br /> •Halons can be used as total flooding agents in areas such as computer rooms, libraries, spaces <br /> floors, and near electronic and medical equipment. <br /> •Halons are also found in some portable fire estinguishers. <br /> Halon fire extinguishers must be remo��ed from the facility prior to demolition. <br /> > . > >; <br /> : DEMOL�'I'ION LA�'II��L ACC�PTABLE A�I3 �A�C�'T`ABI��t'trAS'I'�S <br /> In the disposal of demolition debris, certain materials may or may not be acceptable at the <br /> Demolition Land Disposal Facility (Demo LDF). Certain Demo LDFs ha��e Industrial Solid `Vaste <br /> �Ianagement Plans (IS�VI�IP) that allow them, under special provisions, to accept some of the <br /> follosving materials. <br /> 4 <br />