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HWAAP-K02 & A10
WALKER LAKE TEST RANGE
SITE DESCRIPTION
HWAAP-K02 and HWAAP-A10 are one and the same. A closed firing range on the southeastern portion of Walker Lake was used for the testing or mortars,  rockets, and depth charges. There were five impact areas. Period of operations began during World War II and ended in the 1970s. The receding lake waters continuously expose unexploded ordnance and fragments. The source includes the Walker Lake Test Range (HWAAP-K01). Unexploded ordnance have been located outside the installation property boundary and Walker Lake. The amount of material fired into the lake is unknown. The base makes quarterly sweeps for unexploded ordnance as ordered by NDEP. In 1994, an Army evaluation team visited the site to determine if the unexploded ordnance at the site pose an imminent hazard. As result of the evaluation, an imminent threat to human safety was determined to exist. A Risk Assessment Code (RAC) 1 was assigned. In 1995, USACHPPM performed a study to determine if past ordnance testing activities at Walker Lake have adversely impacted the surface water, sediments, and fish of Walker Lake. The study indicated that no explosive or metals associated with munitions were detected in any of media sampled. This impact range is closely associated with I19, and K01. Safety is the primary risk as these sites. These sites will be addressed under the Range Rule.
PROPOSED PLAN
The site is considered Response Complete under the Installation Restoration Program. The base will continue to make quarterly sweeps for unexploded ordnance as ordered by NDEP.
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