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05/28/92 18:19 12202 280 0225 EPA 11004/008 <br /> Restrictions program requires such knowledge to comply with <br /> Part 268 standards . (See 55 FR 22520 - 22720, June 1, <br /> 1990 . ) Although Federal law does not require that all <br /> applicable waste codes be placed on the hazardous waste <br /> manifooto, Land Oiapooal Rectrictions regulations will <br /> require that all waste codes be reported for the purposes of <br /> meeting LOR provisions. (see 40 CFR 268 . 7 . ) In addition, <br /> )any state agencies may have more stringent rules concerning <br /> proper manifesting of wastes in which listing and <br /> characteristic waste codes apply. <br /> 2C) OUESTION: In the preparation of quality control solutions, <br /> commercial chemical products (eithor in liquid or solid form) are <br /> dissolved in an organic solvent. Because the organic solvent is <br /> used for its solvent properties (1, e• , to solubiliza, mobilize, <br /> or dissolve other Chemical substances) , any excess or expired <br /> solutions should be disposed of with the spent solvent hazardous <br /> waste identification number. Is this correct? <br /> For example, if a solution of 0.01 g aldrin (P004) and <br /> o . ol g dieldrin (P037) dissolvod in 100 mL of methanol is to be <br /> disposed of, would the waste be classified as P003 and P037 and <br /> P004? The methanol, in this case, is used to solubiliza the <br /> pesticide constituents, and the waste, therefore, meets the spent <br /> solvent listing. <br /> AM, The above statements are NOT correct. The answer <br /> to these questions is just like the answer to ques:fon 2A. <br /> Assuming that there is only one active ingrodicnt <br /> analyte or solute) , the excess or expired solutions should <br /> be given the applicable commercial chemical product <br /> hazardous waste identification number under 5261. 33 no <br /> matter how many solvents are used (even if the solvents <br /> themselves ara listed in 6261. 33) . 7n tha above example, <br /> more than one active ingredient exists, therefore the <br /> solution does not meet any listing description at this time. <br /> Additionally, when a solvent is used to rormulate a compound <br /> or product (such a CCP) , neither the solvent nor the <br /> formulated product meets the listing description for spent <br /> solvents. (see 50 FB 53315 , December 31, 1985. ) The <br /> disposed solution would have to be tested for hazardous <br /> Haste eharaeteristice, and would probably fail the <br /> ignitability (Dool) characteristic. <br /> 3) QUESTION: Laboratories prepare many reagents with P and TJ- <br /> listed chemicals. During the analysis of polychlorinated <br /> di.banzo-p-dioxins and dibenzofurans, a reagent containing <br /> methylene chloride/methanol/benzene (75: 20: 5) is used. Upon <br /> disposal of excess reagent, would the mixture be identified as <br /> U080 (methylene chloride/CCP) , U154 (methanol/CCP) , U019 <br /> (benzene/CCP) , P002 (methylene chloride/solvent) , P003 <br /> (methanol/solvent) , or P005 (benzene/solvent)? <br /> 3 <br /> -95% 202 260 0225 05-26-92 01 : 25PM - CC4 13 . <br />