Frequent Questions

Are owners and operators of municipal solid waste landfills (MSWLF) restricted from accepting liquid waste for disposal?

The only types of bulk or non-containerized waste an owner or operator of a MSWLF may accept for disposal are household waste (excluding septic waste), properly recirculated leachate, or gas condensate derived from the MSWLF (?258.28). Furthermore, the recirculation of leachate or gas condensate in MSWLFs is limited to units equipped with composite liners and leachate collection systems (?258.28(a)(2)). Containers holding liquid waste may not be placed in a MSWLF unit unless the container is a small container similar in size to that normally found in household waste, the container is designed to hold liquids for use other than storage, or the waste is a household waste (?258.28(b)). Liquid waste is any waste material that is determined to contain ?free liquids? as defined by Method 9095 (Paint Filter Liquids Test), as described in Test Methods for Evaluating Solid Wastes, Physical/Chemical Methods (SW-846). Gas condensate means the liquid generated as a result of gas recovery processe(es) at the MSWLF unit (?258.28(c)).


The document entitled Test Methods for Evaluating Solid Wastes, Physical/Chemical Methods (SW-846) is available at the following URL:

Additional guidance on the liquids restrictions, gas condensate and leachate recirculation is available in the following documents:

Memo, Dellinger to Vickers; December 16 1998 (RCRA Online # 14313)

Memo, Weddle to Adamoli; November 17, 1993 (RCRA Online # 11798)

Memo, Skinner to Hickman; November 11, 1985 (RCRA Online # 12362)

These documents are available at the following URL:

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