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1999 National Hazardous Waste Biennial Report

The United States Environmental Protection Agency (EPA), in partnership with the States, biennially collects information regarding the generation, management, and final disposition of hazardous wastes regulated under the Resource Conservation and Recovery Act of 1976 (RCRA), as amended. The purpose of the 1999 National Biennial Report is to communicate the findings of EPA's 1999 hazardous waste reporting data collection efforts to the public, government agencies and the regulated community.

The Data Presented in the 1999 National Biennial Report

Beginning with the 1997 biennial reporting cycle, EPA changed the reporting requirements for aqueous wastes, commonly called wastewaters, managed in treatment systems regulated by the Clean Water Act (CWA) and not by the Resource Conservation and Recovery Act (RCRA). EPA would like to caution all readers of this Report that the changes to these reporting requirements will make cursory comparisons of the 1999 National Biennial Report to National Biennial Reports prior to 1997 misleading.

Wastewaters are defined for biennial reporting as wastes that have a particular form and/or are managed on-site or off-site in treatment systems typically used to manage wastewater. Therefore, all wastes bearing one of the following wastewater Form Codes (B101-102; B105, B110-116) and/or System Type Codes (M071-079; M081-085, 089; M091-094, 099; M121-125, 129; M134-136) are excluded from the 1999 National Biennial Report data and the 1999 National Biennial Report , with one exception: wastewaters managed by System Type Code M134 (Deepwell/Underground Injection) are included in the 1999 National Biennial Report data. Refer to Appendix B and C for complete descriptions of the System Type Codes and Form Codes referenced above.

For the 1999 National Biennial Report, EPA has included all non-wastewater data and excluded all wastewater data. The wastewater data was excluded regardless of whether the wastes were managed in RCRA permitted systems prior to management in on-site or off-site treatment systems exempt from RCRA permitting requirements. This is significant, because prior to the 1997 National Biennial Report, EPA included only those wastes managed in units subject to RCRA permitting requirements in the National Biennial Reports. EPA does not believe the inclusion of all non-wastewaters will distort the RCRA hazardous waste management picture presented in this Report, because only a small volume of non-wastewaters are managed in treatment systems exempt from RCRA permitting requirements.

The 1999 National Biennial Report consists of six volumes of data:

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