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Draft Final 2022 Unreclaimed Sites Sampling: UR-22 Site Evaluation Summary Report

Roby, Molly

Comment letter for the Butte Priority Soils Operable Unit (BPSOU) 2025 Draft Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (dated February 14, 2025)

Rott, Emma

Re: Approval Letter for the Draft Final Butte Reduction Works (BRW) Smelter Area Mine Waste Remediation and Contaminated Groundwater Hydraulic Control Site Quality Assurance Project Plan (QAPP) for Microbial Analysis and Biotreatability Study (dated February 27, 2025)

Comment letter for the Butte Priority Soils Operable Unit (BPSOU) Unreclaimed Sites UR-03 Remedial Action Work Plan (RAWP) (dated January 27, 2025).

Comment letter for the Butte Priority Soils Operable Unit (BPSOU) Butte Reclamation Evaluation System (BRES) Draft 2024 Field Evaluation Summary and Technical Recommendations Report (dated November 15, 2024)

Draft Final 2022 Unreclaimed Sites Sampling: UR-12 Site Evaluation Summary Report

Montana Tech Library 
Digital Commons @ Montana Tech 
Silver Bow Creek/Butte Area Superfund Site Montana Superfund 
Winter 2-21-2025 
Re: Comment letter for the Draft Final Silver Bow Creek 
Conservation Area Repository Data Gap Data Summary Report 
(dated January 3, 2025) 
Emma Rott 
Follow this and additional works at: https://digitalcommons.mtech.edu/superfund_silverbowbutte 
 Part of the Environmental Health and Protection Commons, Environmental Indicators and Impact 
Assessment Commons, and the Environmental Monitoring Commons 
 
 
February 21, 2025 
 
 
Mr. Josh Bryson 
Liability Manager 
Atlantic Richfield Company 
317 Anaconda Road 
Butte, Montana 59701 
 
Re: Comment letter for the Draft Final Silver Bow Creek Conservation Area Repository Data Gap 
Data Summary Report (dated January 3, 2025) 
 
Dear Mr. Bryson: 
 
The U. S. Environmental Protection Agency (EPA), in consultation with the Montana Department of 
Environmental Quality (DEQ), is providing comments on the Draft Final Silver Bow Creek Conservation 
Area Repository Data Gap Data Summary Report (dated January 3, 2025), with the following 
comments. Please address the following comments and submit a revised version. 
General Comments 
1. Please ensure appropriate access agreements are acquired for Diggings East Site, to allow the 
project to proceed.  
Specific Comments 
2. Section 3.2.1, Data Quality Indicators – Soil Sample Laboratory Data: The number of precision 
sample results is listed as 9,918.  The correct number should be 6,918. Please confirm and update 
the text accordingly. 
3. Section 3.2, Data Review: Please update the completeness text in this section to what is discussed 
in the DVR for consistency of information. 
4. Section 3.2, Data Review and Section 4.5 of the DVR: A sentence in both sections states “Based 
on the number of samples collected from the planned locations (205 samples)….it is 
recommended to add the word “required” after 205. There were 224 samples taken and 19 of 
them were only analytical group 7 and thus not required for completeness goals. This is just a 
recommendation for clarity. 
5. Table 2: Please specify in the table why samples are colored in light grey.  
6. Attachment 1 – SBCCA Repository Data Gap Data Validation Report, Section 4.4, Comparability:  
The text states “the method specified frequency of QC samples was not met in all cases.” From 
our review of the data packages there a few questions we had regarding this situation: 
 
2 
 
a. The laboratory noted that not enough volume was sent to analyze MS/MSD for some of the 
parameters: If this is one of the reasons that the QC sample frequency could not be met for 
the MS/MSD analyses please ensure that all field sampling documents are updated with the 
correct sample volume requirements as identified by the laboratory for all future sampling 
activities. 
b. The laboratory noted that not all of their method SOPs had the same frequency requirement 
for laboratory QC as the project QAPP stated: If this is accurate the QAPP information 
regarding laboratory QC frequency requirements should be updated so that the laboratory 
SOPs and the QAPP information are correct. This could also help alleviate some of the 
qualification that was required due to frequency criteria going forward. 
c. The applicable text sections should be updated to discuss these field/laboratory deviations 
that affected the QAPP frequency criteria.  
7. Attachment A – Data Validation Checklists, General Comment: Data packages with over 100 
samples in them are difficult to validate as well as review. It is recommended that the number of 
samples be decreased so laboratory QC information is easier to track and manage for the 
laboratory and validators. 
 
If you have any questions or concerns, please call me at (406) 438-0823. 
 
      Sincerely, 
 
 
 
      Emma Rott, P.E. 
      Remedial Project Manager  
 
cc: (email only) 
Butte File  
Chris Greco / Atlantic Richfield  
Mike Mcanulty / Atlantic Richfield  
Loren Burmeister / Atlantic Richfield  
Dave Griffis / Atlantic Richfield  
Tim Hilmo / Atlantic Richfield 
Jean Martin / Atlantic Richfield  
Irene Montero / Atlantic Richfield  
David A. Gratson / Environmental Standards  
Mave Gasaway / DGS  
Adam Cohen / DGS  
Brianne McClafferty / Holland & Hart  
Daryl Reed / DEQ  
Logan Dudding / DEQ  
Jon Morgan / DEQ  
Kevin Stone / DEQ  
 
3 
 
Amy Steinmetz / DEQ  
Katie Garcin-Forba / DEQ  
Doug Martin / NRDP  
Jim Ford / NRDP  
Pat Cunneen / NRDP  
Katherine Hausrath / NRDP  
Ted Duaime / MBMG  
Gary Icopini / MBMG  
Becky Summerville / MR  
John DeJong / UP  
Robert Bylsma / UP  
John Gilmour / Kelley Drye  
Leo Berry / BNSF  
Robert Lowry / BNSF  
Brooke Kuhl / BNSF  
Lauren Knickrehm / BNSF  
Doug Brannan / Kennedy Jenks  
Matthew Mavrinac / RARUS  
Harrison Roughton / RARUS  
Mark Neary / BSB  
Eric Hassler / BSB  
Chad Anderson / BSB  
Brandon Warner / BSB  
Abigail Peltomaa / BSB  
Sean Peterson/BSB  
Josh Vincent / WET  
Scott Bradshaw / W&C  
Emily Evans / W&C  
Pat Sampson / Pioneer  
Karen Helfrich / Pioneer  
Randa Colling / Pioneer  
Scott Sampson / Pioneer  
Jesse Schwarzrock / Pioneer 
Mark Meyer / Pioneer 
Ramzi Khuri / Jacobs 
Cord Harris / Jacobs  
Rich Keeland / Aspect Engineering 
Andy White / Aspect Engineering 
Ian Magruder/ CTEC  
CTEC of Butte  
Scott Juskiewicz / Montana Tech  
David Shanight / CDM Smith  
Curt Coover / CDM Smith  
Chapin Storrar / CDM Smith  
Erin Agee / EPA  
Will Lindsey / EPA  
 
4 
 
Ben Mathieu / EPA 
Jamie Miller / EPA  
Carolina Balliew / EPA  
Molly Roby / EPA  
Katherine Jenkins / EPA  
Charlie Partridge / EPA 
 


Re: Comment letter for the Draft Final Silver Bow Creek Conservation Area Repository Data Gap Data Summary Report (dated January 3, 2025)

Draft Final 2022 Insufficiently Reclaimed Sites Sampling BRES No. 30 – Atlantic 1 Site Evaluation Summary Report

Draft Final BPSOU Unreclaimed Sites UR-05 Remedial Action Work Plan (RAWP)

Draft Final 2022 Unreclaimed Sites Sampling: UR-06 Site Evaluation Summary Report

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