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CDPHE, in cooperation with EPA, has completed the fifth five-year review for the Chemical Sales Company site.

The five-year review report states that site-wide protectiveness determination is deferred. This is because the protectiveness of the remedy for OU4 is deferred. Further information will be obtained by including 1,4-D as a COC, establishing a remediation level, and, if determined necessary, analyzing potential remedial alternatives to address 1,4-D. It is expected that these actions will take approximately nine months to establish a preliminary remediation goal, at which time a protectiveness determination will be made.

The report is available at the public information repositories and online, linked below:

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