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CX-005682: Categorical Exclusion Determination

Routine Monitoring, Maintenance, Research, General Site, and Administrative Actions at the Shiprock, New Mexico, Disposal Site
CX(s) Applied: A1, A8, B1.3, B1.11, B1.20, B3.1
Date: 04/14/2011
Location(s): Shiprock, New Mexico
Office(s): Legacy Management

Proposed routine actions include scheduled sampling of groundwater wells and surface water; well development and related activities. General site actions include repair of a sampler in Many Devils Wash; repair of diversion structure, repair of erosion damage in a former borrow pit area; replacement of a damaged culvert; clean out a drain line; various remediation system repairs and upgrades to include repair or replacement of drain line system components; and new work that is needed to characterize groundwater by obtaining 30 soil samples in Many Devils Wash and potentially installing up to 8 monitoring wells.