WSPC00304

• File Number: 8220.106.I
• Description: Colorado River Water Projects - Animas La Plata - Environmental Studies
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 4/15/2004
• Author: DOI-BOR
• Title: Animas La Plata Project - Environmental Commitment and Monitoring Plan
• Water Supply Pro - Doc Type: Report/Study

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ii) General Construction:
(1) Ridges Basin Dam and Reservoir, Inlet Conduit, Gas Pipelines Relocation,
Durango Pumping Plant and CR 211 Relocation:
(a) Prohibit contractors from disturbing the Bodo Canyon UMTRA disposal cell.
(b) Requirements to follow for handing and management of hazardous materials,
mixed wastes and radioactive wastes will be included in all construction
specification,
(c) Ensure that the construction contractor(s) adhere to all federal and state
requirements pertaining to the management and handling of hazardous
materials, mixed waste, and radioactive waste.

b) Monitoring:
i) Durango Pumping Plant:
(1) The hazardous material of greatest public concern in relation to the project is
radioactive waste from historical uranium processing that may be found in soil
and groundwater which could be disturbed by project construction activities.
Groundwater levels and quality will be monitored at a series of wells on the site
as agreed upon with the Department of Energy and the State of Colorado in
conjunction with Reclamations restricted use plan for the site. Details of water
quality monitoring at the Durango Pumping Plant construction site can be found
in the 2) Water Quality (2.c.ii),
ii) All Project Facilities:
(1) With construction activities hazardous materials will be brought onto the
construction sites. Permits requirements and environmental compliance adequacy
will be monitored by Reclamation construction inspectors and contractor
compliance technicians
(2) There is concern that hazardous material located in the Bodo Canyon UMTRA
Disposal Site could get into Ridges Basin Reservoir. To verify if this is or is not
happening Reclamation will sample and monitor on a quarterly basis DH-228 and
DH-229 for indicators parameters including but not limited to molybdenum,
selenium, and uranium.

14) Transportation - Increased delays at the intersection of west frontage road and CR 211 and
the intersection of U.S. highway 550/160 could result from construction worker peak hour
commute trips during the construction of the structural components of the ALP Project.
Physical degradation of CR 211 could also occur as a result of construction vehicle traffic
associated with construction of the structural components of the ALP Project.

a) Avoidance/minimization:
i) General Construction:
(1) Ridges Basin Reservoir:
(a) Reclamation will a conduct a traffic survey and if determined necessary, the
contractor will implement methods to reduce construction traffic impact

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