Investigation summary and proposed alternative for lead remediation at a small arms trainfire range
- Harding Lawson Associates, Novato, CA (United States)
The small arms trainfire ranges are part of the former Fort Ord Army Base Superfund site in Monterey County, California. Trainees fired small caliber weapons at targets near the leeward dune faces along Monterey Bay. Monterey Bay is a National Marine Sanctuary and the dunes contain endangered species and endangered species habitat. This paper summarizes results of the remedial investigation, human health risk assessment, ecological risk assessment, and feasibility study, and presents the results of bench-scale studies and proposed pilot studies for the site. Results of the RI showed that lead is the primary chemical of concern in soil (i.e., dune sands) and was detected at the highest concentrations where surface coverage of spent ammunition was greater than 10 percent (areas of heavy bullet distribution). A regulatory-approved health-based level of 1,860 mg/kg was developed as an acceptable level for lead-bearing soil in areas of heavy deposition to be protective of human health and the environment for planned reuse. Concentrations near or above 1,860 mg/kg correspond to areas of heavy distribution of spent ammunition. Plant and animal species were sampled and tested to evaluate the potential risk to ecological receptors.
- OSTI ID:
- 205309
- Report Number(s):
- CONF-951139--
- Country of Publication:
- United States
- Language:
- English
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