EXH0028017360

PCHBPollution Control Hearings Board of the State of Washington

a Caution on misusing this table. This table has been developed Table 720-1 for specific purposes. It is intended to provide conservative Method A Cleanup Levels for Ground Water." cleanup levels for drinking v,ater beneficial uses at sitesundergning routine cleanup actions or those sites v,ith relatively few haz_dous substances. This table may not be appropriatefor Hazardous Substance CAS Number Cleanup Level defining cleanup leveLs at other sites. For these Rasons. the values in this table should not automatically be used to define Arsenic 7440-38-2 5 ug/liter t' cleanup levels that must be met Ibr financial, real estate. insurance coverage or placement, or similar ¢an.uctions or Benzene 71.43-2 5 ng/liter¢ purposes. Excecdances of the values in this table do not Benzo_a)pvre_e 50-32-8 0.1 ug/literd necessarily mean the b-_'lundwater must be restored to those• levels at all sites. The level of resto_don dependson the Cadmium 7440-13-9 5 ug/iiter¢ remedy selected under WAC i 73-340-350 through 173-340-390. b Arsenic. Cleanup level b_ed on backtgound concemrations for Chromium (Total) 7440-47-3 50 ug/liter f stateof Washington. DDT 50-29-3 0.3 ug/litet_ c Benzene. Cleanup level based on applicable state and federal law (WAC 246-290-310 and 40 CF.R. 141.61). 1.2 Dichlomethaae (EDC) 107-06-2 5 ug/literh d Benzo(a)pyrene. Cleanup level based m applicable state and federal law (WAC 246-290-3.10 and 40 C.F.R. 141.61), adjtmed Ethylbenzene 100-41-4 700 ug/literi to a I x 10: risk. If other carcinogenic PAlLs are suspectedof Ethylene dibmmide (EDB) 106-93.4 0.01 ug/lite_ being pt_,ent at the site. test for them and use this value…
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