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Special 10% We proudly serve the South Air Force Research Laboratory, Detachment 7 (AFRL)
Discount for greater Antelope Valley Explanation of Significant Differences, Operable Unit 4/9,
and So. Kern County
Military, 1st Responders,
Senior Citizens, Teachers *No EAFB travel charge Edwards Air Force Base, California
for jobs over $249
(661) 802-6753 • avprotouch@gmail.com
The U.S. Air Force released an Explanation establishes that vapor intrusion sampling will
of Significant Differences or ESD that include PCE and TCE degradation products,
modifies the cleanup remedies selected for mainly cis-1,2-dicholoroethene (DCE),
Sites 37, 120, 133 and 321 in the 2007 South trans-1,2-DCE, and vinyl chloride.
AFRL Record of Decision. The remedies
address groundwater contaminated with The South AFRL ESD is now available on the
solvents — specifically tetrachloroethene, or Edwards Administrative Record website at
PCE, and trichloroethene, or TCE — and https://ar.afcec-cloud.af.mil. On the website,
scroll to the bottom of the page and click
perchlorate, a component of solid rocket “Continue to Site,” select the “Active Duty”
propellant. Remediation of the groundwater is button, scroll down the Installation List and
technically infeasible due to the nature and
distribution of the contaminants within click on “Edwards AFB, CA,” then enter
fractured bedrock. 6093 in the “AR #” field. Click “Search” at the
bottom of the page and click on the spy glass
The South AFRL Technical Impracticability icon to view the document. The Edwards
Waiver Zone/Containment Zone, or TIWZ/CZ, Administrative Record can also be viewed at
was established to protect people and the the following Information Repositories:
environment through administrative and
engineering land use controls. Long-term Edwards Air Force Base Library
monitoring verifies that impacted groundwater 5 West Yeager Boulevard
does not migrate outside the TIWZ/CZ and Edwards AFB, CA 93524
that workers are protected from vapors that (661) 275-2665
may intrude from groundwater into indoor air. Kern County Public Library
Two factors made the South AFRL ESD Wanda Kirk Branch
necessary. The first was an update of the 3611 West Rosamond Boulevard
perchlorate cleanup goal from 24 micrograms Rosamond, CA 93560
per liter (µg/L) to the California primary (661) 256-3236
maximum contaminant level of 6 µg/L. The Los Angeles County Public Library
Experience community. Discover truth. second was an update of the groundwater 601 West Lancaster Boulevard
flow and contaminant transport model for Lancaster, CA 93534
Lancaster Baptist is a church with South AFRL. (661) 948-5029
a friendly, family atmosphere, The South AFRL ESD modifies the For more information or to obtain a copy of
compassionate vision, and strong perchlorate cleanup goal, the protocol for the South AFRL ESD, contact Gary Hatch,
commitment to Bible truth. We offer triggering a Technical and Economic 412th Test Wing Public Affairs at
classes specifically designed for military Feasibility Analysis and the approach for (661) 277-8707 or e-mail
families and single. Join us this updating the vapor intrusion compliance 412tw.pae@us.af.mil.
Pastor Paul Chappell Sunday at 0830 or 1100. boundary, if necessary. The document also
lancasterbaptist.org Air Force Civil Engineer Center
Installation Support Section
Only 15 minutes from Edwards South Gate Edwards Air Force Base, CA 93524
661.946.4663 4020 E. Lancaster Blvd. Lancaster, CA 93535
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