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466700 ENVIRONMENTAL HEALTH TITLE 22 (P• 1800.80) (Rpitdr at Na 2-1.1246) (1) Type is If the waste or other material is a millable solid,the sample shall be passed duectly,or shall be milled to pass,through a No.10 (two millimeter) standard sieve before it is analyzed. If the sample contains non-friable solid particles which do not pass directly through a No. 10 sieve and which are extraneous and irrelevant as hazardous constituents to the waste or other material,they shall be removed to the extent feasible by mechanical means and discarded.Solids which remain in the waste or other material after removal of the aforesaid extraneous particles shall be milled to pass through a No.10 sieve and shall then be combined and mixed well with the solids which passed through the sieve without milling. The reconstituted sample shall then be analyzed as prescribed in this section. (2) Type ii:If the waste or other material is a filterable mixture of liquid and solids in which the solids constitute five-tenths (0.5) percent byy weight or greater of the sample, the liquid and solids shall be separated by filtration through a 0.45 micron membrane filter.The filtrate so obtained is to be desig- nated as Initial Filtrate.Its volume is determined,and it is retained.The sepa- rated solids shall be sieved in a No. 10 sieve and any nonfriable extraneous particles of the kinds described in subsection (c) 1) which do not pass through the sieve shall be removed to the extent feasible by mechanical means and discarded. The solids which remain after removal of the extraneous particles shall be milled to pass through a No.10 sieve and shall be recombined with solids which passed through the sieve without milling.This recombined solid material shall be extracted following the procedure in subsection (f). A ratio of 10 milliliters of extraction solution per gram of solid shall be utilized with appropri- ate modifications for extraction vessel size. After completion of solids extrac- tion,the filtered extractant is combined with Initial Filtrate mixed thoroughly and anlyzed as described in subsection (f) 3). (3) Type iii:If the waste or other material is a nonfilterable and nonmillable sludge,slurry,or oily,tarry or resinous material,it shall be analyzed as received unless it contains non-friable extraneous and irrelevant solid particles of the ldnds described in paragraph (c)(1) of this section. If it contains such solid particles and they are Much size as not to pass through a No. 10 sieve, they shall be removed to the extent feasible by mechanical means and discarded. The remainder of the sample shall be analyzed as prescribed in this section. (4) If it is necessary to dry a solid sample or the solids fraction of a sample be ' re sieving,milling or removal of extraneous solids, or if a sample is dried prior to analysis,all weight losses due to drying shall be determined,and these losses and the conditions of drying shall be reported. (d) If the waste or other material is a liquid containing less than five-tenths (0.5) percent by weight of undissolved solids,it shall not be subject to the WET procedure, but shall be analyzed directly for the substances listed in Section 66699.The waste shall be classified as a hazardous waste if the total concentra- tion in the waste of any substances listed in Section 66699 exceeds the TTLC value given for that substance. If,however,the total concentration is less than the TTLC but exceeds the STLC when expressed on a milligrams per liter basis, the waste or other material shall be filtered through a 0.45 micron membrane filter, the solids discarded and the filtrate shall be analyzed directly for the substances listed in Section 66699. The waste shall be classifed as a hazardous waste if the concentration in the filtrate of any of the substances listed in Section 66699 exceeds the STLC value given for that substance.