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♦ City Inspections Department and local w�ell contractors. � � <br /> Another way in which to identify unsealed R•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 /> , _, �RIG�RA�Y`�'S� ,:::::;>;::. . .: <br /> ....:::: ...._..: = �CslHG� ; ...�.....:::::>>:;;:<.::>,::;;<::::::: :::::: <br /> ....... ; <br /> _ ; ......... <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 atmosphere. These re:rigerants 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 /> ♦ refriaerators ♦ dehumidifiers ♦ central air conditioners <br /> ♦ room air conditioners ♦ vending machines ♦ heat pumps <br /> ♦ freezers ♦ chillers ♦ ice machines <br /> ♦ food display cases ♦ �vater coolers <br /> •Refrioerant substitutes (including HFC-13-�a) must also be recovered and not vented to the <br /> atmosphere. . <br /> <; ,; ;, , _..:,:: <br /> ,. _ ,. <br /> :::.: .>:. <br /> ; , <br /> ' ��RE EX_ l 7 ::,:>::::<�::<::.:><::::::::<�:::<:::::>,.,..:>::-<:::>:><::::.::: �: <br /> `��U�SH�R,S >:::.::>:<:::.:::;::: <br /> ..................:: <br /> •Some fire estinguishers contain halons which destroy the ozone layer. <br /> •Halons must be recaptured tivhen recharging, sen•icing, or retirin�the unit. There are a number <br /> of companies in l�'Iinnesota that have the proper halon recovery equipnent. � <br /> �HaIons 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 estinguishers must be remo�•ed from the facility prior to demolition. <br /> , . : . <br /> ' DEi110L�Oi� L��I'U��;L �CCEPTABLE A��D �AeCE�'T�BL�`�?tFAS1'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 �ti'aste <br /> 1lanagement Plans (ISW`IP) that allo�r• them, under special provisions, to accept some of the <br /> follorving materials. <br /> 4 <br />