Remedial Investigation Report. Volume 6: Southern Study Area, Sections 1.0, 2.0, and 3.0 Text, Version 3.3

Remedial Investigation Report. Volume 6: Southern Study Area, Sections 1.0, 2.0, and 3.0 Text, Version 3.3
Author:
Publisher:
Total Pages: 255
Release: 1989
Genre:
ISBN:

The purpose of the Southern Study Area (SSA) Report is to present the Army's Remedial Investigation (RI) results for the southern portion of Rocky Mountain Arsenal (RMA). This document is a formal RI product in accordance with the proposed Federal Facilities Agreement and Settlement Agreement (1988), the RMA Technical Program Plan (TPP) (PMO, 1988/RIC 88131R01), and the June 1985 U.S. Environmental Protection Agency (EPA) RI Guidance Document. The seven completed RI Study Area Reports (SARs), along with the RI media reports for air, biota, buildings, and water, fulfill the requirements of defining the nature and extent of contamination, and completing a comprehensive RI for the On-post Operable Unit of RMA as required by the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Superfund Amendments and Reauthorization Act (SARA), and the National Contingency Plan (NCP). The SSA report integrates known historical information, the results of previous investigations, and the current RI programs for buildings, soil, surface water, groundwater, biota, and air to present an overall environmental contamination assessment of the study area as required under Contract Numbers DAAA15-88-D- 0024. The SSA Report represents Volume VI of the overall RMA Remedial Investigation.

Work Plan Remedial Investigation and Feasibility Study

Work Plan Remedial Investigation and Feasibility Study
Author: Leonard C. Johnson
Publisher:
Total Pages:
Release: 1986
Genre: Dye-producing plants
ISBN:

The purpose of the Work Plan is to provide a detailed scope of work and technical approach to successfully complete EPA Work Assignment No. 108.4LA4, dated March 1985. Objectives/Problem Quantification: • To determine the presence or absence of chemical contamination on the site proper, including former spray fields, trash disposal area, two former holding ponds, former waste lagoon, and office & production areas • Hydraulically characterize the water table aquifer in the near vicinity of the site (depth to water table, gradient, aquifer thickness, permeability, flow direction & velocity • Determine the presence or absence of site-related chemical contamination within the water-table aquifer • Determine the potential for the water-table aquifer to be hydraulically connected to the Floridan Aquifer • Determine the presence or absence of site-related chemical contamination in surface water, sediments & wetland areas that are contiguous to the site • Compile a data base that will support a site-related Public Health and Environmental Assessment • Conduct a site-related Public Health and Risk Assessment that will evaluate: existing & potential pathways for contaminant transport; location of existing & potential receptors; risk to receptors associated with existing or potential exposure to site-related contaminants • Determine the need to collect additional data to further define site characteristics. FS Objectives: • Identify candidate remedial alternatives • Evaluate candidate remedial alternatives to support EPA selection of preferred alternatives. The need for performing additional RI work & for conducting the optional FS will be decided by EPA after review of results generated in this study.