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♦ City Inspections Department and local R•ell contractors. � ' <br /> _ , <br /> Another way in which to identify unsealed w•ells is to look for clues: some clues are: " <br /> ♦ tivindmills, 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 /> ; _ . . .,:. <br /> :::. ::::::::::::.:. <br /> �.,:.:::>.::::::::;.<;:. <br /> �RIG�R:A��F'�'Sf C�Cs1J3G���';<::�.:`�;::::::. : .:.::>:. <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 ♦ �vater coolers <br /> •Refrigerant substitutes (including HFC-13-�a) must also be recovered and not vented to the <br /> atmosphere. <br /> _ <br /> , <br /> ; : . <br /> ; ; ;�IRE EXT�I�U�SFI�� :: ` ::::":�:::;::>::: <br /> .............::::::..:.:::.:::::.:::::> <br /> •Some fire estinguishers contain halons �•hich destroy the ozone layer. <br /> •Halons must be recaptured when recharging, sen•icing, or retirin�the unit. There are a number <br /> of companies in l��Iinnesota that have the proper halon recor•ery equipnPnt. ' <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 extinguishers. <br /> Halon fire extinguishers must be remo�•ed from the facility prior to demolition. <br /> ' ; � . <br /> �;.: <br /> DEi�I���O� �,�'�l'I1��;L �,CCEPTABLE A��D �ACCF�'T�BL� `?�'AS1.ES <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 Waste <br /> �Ianagement Plans (ISWIIP) that allo��• them, under special provisions, to accept some of the <br /> following materials. <br /> 4 <br />