Prepared By:

Environmental Standards, Inc.

Document Type

Government Report

Publication Date

Winter 12-7-2022

Subject Area



This supplemental quality assurance (QA) memorandum is based upon a sample processing error identified by Pace Analytical Services, LLC (Pace) of Minneapolis, Minnesota of dust filter cassette samples. Specifically, the dust filter cassette samples were collected as part of the Silver Bow Creek/Butte Area National Priorities List (NPL) Site, Butte Priority Soils Operable Unit, Residential Metals Abatement Program (RMAP) Quality Assurance Project Plan Non-Residential Parcels – Indoor Dust (dated February 28, 2022), (QAPP; February 2022).

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.