????????????????????????????????????????????????????????????????????? oard Adopts for First NoticeTiered Approach to Corrective Action Objectives, R9712(B)On July 10, 1997, the Boardadopted for first notice publicationin the Illinois Register amendmentsto the original Tiered Approach toCorrective Action Objectives(TACO) rules concerning mixturesof similar-acting chemicals(mixture rule) in the TACOprogram.
The Board adopted final rules
in R97-12(A) on June 5, 1997.
The pollution control measures
agreed to by Shell will reduce benzene emissions by 100 tons per year.
Reg.
36099).
These chemicals
may occur in the source water of public drinking water sys...
Allowed
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