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dy:_1,_yy_ 15.1'_ <br />SEP-i7-92 iHU 16 16 <br />93a, ,: <a E`~::hl FFEiFI~~H, ESU. <br />• • <br />Hnwn FAX K0, 30333Ia401 <br />PAGE 06 <br />P. 03 <br />2. Cuslo~a mills. Custom mills require a Certificate of Designa- <br />tion under the SWDFA, and do not need a Mined Land Reclamation <br />Board permit. Even if the mill takes waste from only a single <br />ofF-site source, the mill requires a Cb. If a mill ceases taking <br />oPE-site wastes, the mill may continue operations under the Cb, <br />ar may, at its option, apply for a Mined Land permit, and abandon <br />the CD. CDH intends to define "custom mill" by regulation. <br />3. Soap Leaching Operation. Facilities conducting heap leaching <br />do not require a CD, buk simply a Mined Land Permit. Hived Land <br />in :its permit process will ensure that the substantive standards <br />of the SWDFA are complied with in the disposal of the heap leach- <br />ing waste on-site. Such disposal is the disposal of one'9 own <br />waste on one's own property, and does not require a CD, but does <br />require compliance with the substantive standards of the SWDFA. <br />IP a facility heap leaches materials which were imported from <br />off-site, and the other site has a Mined Land permit, the <br />Facility's heap leaching is simply the processing of purchased <br />raw material. Accordingly, no Certificate of Designation is <br />required. <br />d. Mined Land permitted areas used as landfills after mining is <br />completed. zE the landfill receives only waste from the mined <br />facility, no CD is required, since the filling is the disposal of <br />one's own waste on one's own property. Mined Land in its permit- <br />ting wizl ensure that the substantive standards of the SWDFA are <br />complied with. <br />If the landfill accepts wastes from off site, a CD is necessary. <br />Once a Landfill operator demonstrates that a CD to use the per- <br />mitted area as landfill has been issued, MLRa may choose to <br />release the operator Prom the MLRS permit and bond. <br />Oave elt~'on, Di[ector <br />Colorado Department of Healtri <br />Hazardous Materials b Waste <br />Management Division <br />Mir eel Long, lliteCtor <br />Mined Land Reclamation <br />Division <br />AG File No. DNR9201Z69.KJ <br />