№ files_lp_4_process_1_42381
Internal memorandum detailing site contamination history, groundwater monitoring data, and remediation status of the Bonneville Power Chehalis Substation.
Year: 2026
Region / City: Chehalis, Pacific Northwest, USA
Topic: Environmental Site Assessment / Contamination Monitoring
Document Type: Memorandum
Organization / Institution: Bonneville Power Administration (BPA)
Author: Tyga Howe
Target Audience: Internal file recipients
Site ID: FSID 64648972, CSID 10019, UST 2856
Contamination Type: Petroleum-contaminated soil, Benzene, Lead, VOCs
Monitoring Period: 1995–2025
Historical Actions: UST closure and soil excavation in 1991–1992, groundwater monitoring initiated 1995–2002
Last Detection of Contaminants: 2014 (Benzene 14.1 μg/L)
Cleanup Status: All analytes below regulatory cleanup levels since 2015
Next Steps: Add files to ISIS, draft NFA, consider SHARP if mandated
Price: 8 / 10 USD
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