Details for 00061710 Air Force Civil Engineering 6x5.5


Public Notice

Relative Risk Site Evaluation

The Air Force completed the Relative Risk Site Evaluation (RRSE) for Seguin Auxiliary
Airfield to support sequencing of environmental restoration work. The RRSE process is
used to evaluate the relative risk posed by an environmental restoration site in relation to
other sites. Restoration sites in Comprehensive Environmental Response, Compensation,
and Liability Act (CERCLA) phases prior to remedy-in-place are evaluated in the process.
Due to discovery of PFOS/PFOA, a RRSE was completed for the sites. Relative risk is not
the sole factor in determining the sequence of environmental restoration work, but it is an
important consideration in the priority setting process.
At Seguin Auxiliary Airfield, two (2) restoration sites were evaluated in the process. The
Overall Site Category scores were “High” at 30.3 ug/l.
This Relative Risk Site Evaluation is issued in accordance with the DoD Defense Environmental Restoration Program and is available for public review for 30 days as of this notice.
This RRSE can be found at AFCEC CERCLA Administrative Record (AR): ar.afcec-cloud. Scroll to the bottom of the page and click on “Continue to site”, then select “Active,”
scroll down the Installation List and click on “Randolph,” then enter “601723.” in the “AR
#” field. Then click “Search” at the bottom of the page. Click on the spy glass to view the
For more information or to submit written comments, please contact us at 266 F Street
West, JBSA Randolph AFB, TX 78150-4583. Or 210-652-7038.


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