According to the EPA, “owners and operators of land treatment units (LTUs) must devise a program and demonstrate its effectiveness given the design of the unit and characteristics of the area. In addition, the regulations require specific operating requirements to be met in the treatment program. The requirements outlined for the treatment program, including design and operating criteria and unsaturated zone monitoring, stem from a treatment demonstration.”
The purpose of the treatment demonstration is for the owner/operator to adequately display the effectiveness of the land treatment unit at degrading or immobilizing the hazardous constituents in the waste placed there within. A treatment demonstration can involve laboratory testing and/or field testing on a sample soil plot.
The EPA states that, “the Regional Administrator or authorized state uses information provided by the treatment demonstration to set permit standards. Interim status units are not required to establish a treatment program because the interim status regulations are self-implementing.” In order for owners and operators to place waste in an LTU the waste must be rendered nonhazardous or less hazardous from placement. The EPA has established a list of parameters that owners and operators must establish during the treatment demonstration. These parameters include the following:
According to 40 CFR §264.273, “the owner or operator must design, construct, operate, and maintain the unit to maximize the degradation, transformation, and immobilization of hazardous constituents in the treatment zone. The owner or operator must design, construct, operate, and maintain the unit in accord with all design and operating conditions that were used in the treatment demonstration…
At a minimum the Regional Administrator will specify the following in the facility permit:
Quoted and EPA cited information (unless otherwise noted) for this blog post was gathered from the EPA document, “Introduction to Land Disposal Units.” As always, this blog post is not intended to be comprehensive and it is always best to check with the EPA and local government for full, up-to-date, rules and regulations.
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