Accession Number:

ADA278969

Title:

Offpost Operable Unit Endangerment Assessment/Feasibility Study. Revised Draft. Volume 1. Introduction

Descriptive Note:

Final rept.

Corporate Author:

HARDING LAWSON ASSOCIATES NOVATO CA

Personal Author(s):

Report Date:

1991-12-13

Pagination or Media Count:

123.0

Abstract:

An Endangerment Assessment was performed for the Offpost Operable Unit OU of Rocky Mountain Arsenal RMA. The Offpost OU consists of 27 square miles located to the north and northwest of RMA. It is currently characterized by rural agricultural and residential land uses, with some industrial land use. In the future, land use is projected to change to more commercial, industrial, and recreational land use in areas adjacent to RMA, with some areas zoned for residential development. For these reasons, a rural residential scenario including agriculture, a commercialindustrial scenario, and a recreational scenario were evaluated. An ecological assessment was also performed, due in part to the bald eagle habitat and other sensitive environments in the Offpost OU. The major steps performed in the EA included data evaluation, identification of chemicals of potential concern, exposure assessment, toxicity assessment, human risk characterization, and ecological assessment

Descriptors:

• *AIR POLLUTION
• *WATER POLLUTION
• *POLLUTION ABATEMENT
• *ECOLOGY
• *LAND USE
• *INSTALLATION RESTORATION
• WATER FLOW
• RISK
• MONITORING
• HEALTH
• ARMY FACILITIES
• GEOLOGY
• FEASIBILITY STUDIES
• RURAL AREAS
• COLORADO
• SEDIMENTS
• WILDLIFE
• SITE INVESTIGATIONS
• CARCINOGENS
• WASTE DISPOSAL
• CONTAMINANTS
• SURFACE WATERS
• LIVESTOCK
• FLOW RATE
• GROUND WATER
• HYDROLOGY
• TOXICITY
• CHEMICALS
• COST EFFECTIVENESS
• TOXIC HAZARDS

Subject Categories:

• Ecology
• Hydrology, Limnology and Potamology
• Civil Engineering
• Air Pollution and Control
• Solid Wastes and Pollution and Control
• Water Pollution and Control
• Environmental Health and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE