PROPOSED PLAN for Operable Unit 2A Installation Restoration Program Sites 9, 13, 19, 22, and 23, Former NAS Alameda, Alameda, California Alameda, California, August 2011


The Department of the Navy encourages the public to comment on this Proposed Plan* for groundwater response actions associated with Installation Restoration (IR) Sites 9, 13, and 19 located within Operable Unit-2A (OU-2A) at former Naval Air Station (NAS) Alameda, known as Alameda Point, in Alameda, California. No further action is required for soil and groundwater at IR Sites 22 and 23, and for soil at IR Sites 9, 13, and 19, based on the evaluation of human health risks. The Navy is making this request in cooperation with the U.S. Environmental Protection Agency, Region 9 (EPA), the San Francisco Bay Regional Water Quality Control Board (Water Board), and the California Department of Toxic Substances Control (DTSC).

This Proposed Plan summarizes and compares the possible remedies and identifies the Navy’s preferred remedial alternatives for groundwater at IR Sites 9, 13, and 19 (Figure 1). The Navy proposes the following to remediate groundwater at IR Sites 9, 13, and 19:
> Monitored natural attenuation (MNA) of chemicals of concern (COCs) to meet the remedial action objectives (RAOs) at IR Sites 9 and 19.
> Remediate groundwater contaminated with COCs using in-situ biological treatment/ bioremediation to meet the RAOs at IR Site 13.

Public Meeting
Wednesday, August 31, 2011
6:30 p.m. to 8:00 p.m.
Alameda Point Main Office Bldg 1, Room 201 950 West Mall Square, Alameda, California

Proposed_Plan_OU2A_Alameda_Point_1.pdf722.32 KB