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REMEDIAL ACTION WORK PLAN OPERABLE UNIT 2, LANDFILL ...

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However, it is expected that any UXO found at the 0U2 landfill have not been fired and<br />

therefore, are not in an armed condition. This assumption is made because there were other<br />

authorized ordnance detonation areas on Fort Ord and reviews of historical records indicate that<br />

only minor dumping, not disposal detonations and artillery impact, occurred at OU2. This<br />

assumption will not apply to other locations, such as artillery impact areas, where most<br />

projectiles encountered have been fired and can be expected to be found in an armed condition.<br />

But UXO found at the OU2 landfill are expected to have been inert or practice ordnance that was<br />

determined by base ordnance personnel to not be worth the trouble of proper disposal procedures.<br />

The condition (fuzeclhmfuzed, armedkmrmed) of each UXO found will be positively conl%rned<br />

by the UXO specialists assigned to the excavation team through the procedures for handling<br />

UXO outlined in Section 3.3.<br />

One IT UXO specialist will be assigned to each excavation team to locate, identi~ and remove<br />

UXO from the excavation sites. This will be accomplished using one of the following methods.<br />

In the first method, the excavator will cast the excavated material spoil to one side of the<br />

excavation. The UXO specialist will then examine the spoil for UXO contamination, after which<br />

a loader will transfer the material to the bed of a dump truck for transport to the receiving area.<br />

The second method involves examination of the excavated material by a UXO technician at the<br />

excavation point while it is being excavated and at the receiving point prior to compaction. In<br />

this case, the material must be spread out on a level surface so that the UXO specialist can easily<br />

examine the material prior to compaction. Both of these methods are subject to on-site review by<br />

the site Corp of Engineers (COE) Safety Specialist for Explosives and Ordnance.<br />

All UXO specialists will be equipped with low-sensitivity magnetometers for use in locating<br />

subsurface ferrous metallic objects. This detection instrument will be used to search the<br />

surrounding area to ensure that no additional UXO are present in the event that a UXO is<br />

uncovered by the excavator and detected by the UXO safety observer. A description of the<br />

technique and instrument to be used is described in Section 3.3.<br />

The UXO specialists will communicate continuously with the excavator operator to stop the<br />

excavation if a suspected UXO is located. When a suspected UXO is located the excavator<br />

operator will immediately place the excavator bucket on the ground, shut down the excavator,<br />

and depart the site to the contamination reduction zone. The UXO specialists will then examine<br />

4

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