Compiled TCP Information

On August 3, 2016, the Technical Track Work group discussed data from the background wells on the Kaiser site. LimnoTech has determined that there may be evidence from a comparison of background well data and that from Kaiser site, along with synoptic river data, of an unknown groundwater source up-gradient of this site, but there is more information needed. Coordinating with the Toxics Cleanup Program in the future may help in the task. However, given the legal restrictions that MTCA/TCP has to work within (for existing and closed cleanup sites, and identification of new sites) this may be a difficult task.

For now, we have compiled list of documents provided to the Task Force regarding Toxics Cleanup Program (TCP) that may be of use in charting a path forward to identify this groundwater source, and how TCP can help to complement this work. If you have additional information that would be useful, please send them to Kara Whitman ( for posting on this page. Note: these are also posted on the Department of Ecology Publications Page.

– Approach for TCP sites – (From Adriane Borgias (Feb 2016)
– PCB TCP Sites 4-17-15 (TCP site presentation April 2015)
– Appendix A-TCP Sites (June 2015)
– Appendix B-Spokane Wells (June 2015)
– Standard Operating Procedure for Purging and Sampling Monitoring Wells plus Guidance on Collecting Samples for Volatiles and other Organic Compounds 
– Tech Memo – PCBs in Spokane Valley GW – Marti – 9-16-15 FINAL  (September 2015)

Ecology Resources: Searchable map database of TCP Sites

TCP memos regarding analytical data: Information regarding policy decision by TCP to use 1668 



May 25, 2016 Spokane River Regional Toxics Task Force Meeting

The next meeting of the Spokane River Regional Toxics Task Force is:

Date: May 25, 2016
Time: 9:00 a.m. to 12:30 p.m.

Location: Spokane County Water Resource Center
1004 N. Freya Street
Spokane, WA 99202

Click here for a map

Call In Number: 800-704-9804
Participant Code: 34863442#

Webinar Information: 

To join the online meeting


1. Go to
2. Enter your name and email address.

3. Enter the meeting password: 3yMHswki

4. Click “Join Now”.

To join the audio conference only


For Audio, please use telephone.

Call 1 800 704 9804

Participant code 34863442#

Meeting Documents:
–  SRRTTF 05-25-16_Summary Notes_Final
SRRTTF May 25 2016 Agenda_revised3
Previous Meeting  Summaries:
SRRTTF April 27 DRAFT summary notes (Decision Item)
–  SRRTTF_TTWG_05-04-16_Summary Notes
Other Meeting Documents and Presentations
SRRTTF-PCB-Fact-Sheet-April-2016-_edited-4.20.16 (Decision Item)
SRRTTF_LimnoTech_05_25_2016_Part 1 and 2
All Comprehensive Planning Documents and Comments
– SRRTTF_MagnitudeSourcesPathways_2016_0518_draft. (Decision Item)
SRRTTF_Inventory_of_Control_Actions_05182016_draft (Decision Item)
Work Plan_Rodenburg
  Homolog-PMF presentation_II 5-25-16

Spokane County’s 2016 Annual Toxics Management Report

Spokane County’s 2016 Annual Toxics Management Report is available for viewing.  This report contains information on PCB pattern analysis (2.3.3) and PCB Source ID and Positive Matrix Factorization (2.3.4).

2016 Annual Toxics Management Report_04142016

March 26, 2012 Technical Track Work Group Meeting

Click on the links below to access the meeting materials from the SRRTTF Technical Track Workgroup Meeting held on March 26, 2012.

Summary Notes TTWG Meeting March 26 2012

Workshop Planning Documents for Presentation to SRRTTF

Work Group Report Out Presentation

Pareto Analysis Results

Sessions Layout

Workshop Planning Document Aerial Deposition

Workshop Planning Document Other Watersheds

Workshop Planning Document Source Identification

Workshop Planning Document Spokane River Ecology Data

Workshop Planning Document Stormwater