Waste listing basis

To indicate its reason for listing a waste, U.S. EPA assigns a hazard code to each waste listed on the F, K, P, and U lists. These hazard codes are listed below. The last four hazard codes apply to wastes that have been listed because they typically exhibit one of the four regulatory characteristics of hazardous waste. There will be more about the four characteristics of hazardous waste later in this chapter. The hazard codes indicating the basis for listing a waste are as follows2 3 4 5 6 7 ... 

Hazardous waste management system carbamate production identification and listing of hazardous waste and CERCLA hazardous substance designation and reportable quantities (final rule) Hexane removed from final list of chemicals to be added to Appendix VIII basis for listing for K156 waste 60 FR 7824 EPA 1995e... 

The Resource Conservation and Recovery Act (RCRA) identifies 1,4-dichlorobenzene as the hazardous constituent in various hazardous wastes. 1,4-Dichlorobenzene is the basis for listing waste assigned the hazardous waste codes F024 and F025 (EPA 1981c). It is also the regulated constituent in hazardous... 

Basis for Listing Hazardous Waste F024, F025 40 CFR 261, App. VII ERA 1981c... 

Just because a calculation has found its way into the literature does not, in itself, mean that the result is correct. Over time one builds up a mental list of people whose calculations can be trusted, and the converse. Bear in mind that, commonly, the more distinguished is the senior author, the less likely it is that he/she has had much involvement in running the calculations. It is seldom a waste of computer time to rerun one or two calculations if there is any concern about whether they re right or not. And if this is not possible because, say, the discussion in the paper is inadequate to allow reconstruction of the basis set used, this is grounds for concern about the results anyway. 

Hence risk assessment criteria must be established so that there can be developed a national priority list of the hazardous sites that require remedial action. EPA has adopted the Mitre Model for assessing the risks and ranking waste sites. There is some criticism of this model, and there are a number of as yet unanswered questions about its application. Formal cost/benefit analysis will not be used, and risk assessment will be on a case-by-case basis. EPA will thus be developing its knowledge base and procedures as it carries out the program. 

Basis for Listing Hazardous Waste (proposed) Yes 59 FR 9808 EPA 1994u... 

EPA. 1981d. Basis for listing hazardous waste. Identification and listing of hazardous waste. U.S. Environmental Protection Agency. Code of Federal Regulations. 40 CFR Part 261, Appendix VII. 

NPL National Priorities List—the U.S. EPA s list of the most serious uncontrolled or abandoned hazardous waste sites in the United States, updated on a regular basis... 

A waste with characteristics as listed in Table IV has been assumed. The assumed composition is similar to that for a municipal primary treatment waste sludge for which data on methane fermentation was available for comparison. The concentrations are expressed in milhelectron equivalents since the materials balances and calculations were made on this basis. One milhelectron equivalent per liter is equivalent to 8 mg/liter of chemical oxygen demand (COD), a more commonly used measure of waste strength. 

Tables 2 and 3 report proximate and ultimate analyses of the wastes and derived char sampleS) respectively. Heating values (HV) of the wastes and chars were estimated by an own multivariate correlation in terms of samples elemental compositions, previously reported (5). Estimated heating values on a diy-ash free basis are listed in Table 3.

The information gathered in the first two steps is often collected in an effluent summary worksheet. An effluent summary lists the regulated pollutants produced by the process and summarizes the quantities produced and where they originate. The effluent summary can be used to focus waste minimization efforts and as a design basis for the design of effluent treatment processes. The information in the effluent... 

Chemical Composition. No completely valid generalizations about the composition of SRP wastes can be made because large variations in the composition of both the sludge and the supernate occur from tank to tank, within each tank, and with time. For present purposes, it is sufficient to list the components present and estimate their maximum and average concentrations. The major chemical components of the waste are shown in Table I together with an estimate of their average concentration calculated on the basis that all of the salt is dissolved, and the resulting... 

Zirconia is an important refractory ceramic. It also forms the basis of solid electrolytes in systems such as Zr02-Y203. Both zirconia and hafnia figure prominently in refractory ceramics proposed for the containment of uranium and plutonium radioactive waste. The monoclinic form of Zr02, baddeleyite, is a widespread accessory mineral. Zirconia undergoes transitions from monoclinic to tetragonal to cubic, with thermochemical parameters listed in Table 5. 

Basis for listing hazardous wastes-constituent for listing (KOlO)... 

In Subparts D of the regulations a number of wastes from non-specific as well as from specific processes are listed which are considered hazardous im-less proven otherwise by the process of delisting (Sections 261.31 and 261.32 of the regulation respectively). These lists are shown on Table 4.2 and 4.3. The basis for listing a waste as hazardous in 261.31 (Table 4.2) and 261.32 (Table... 

---