FY 2013 Measure Definitions Columbia River
Measure Language: Clean up acres of known contaminated sediments (cumulative starting in FY 2005).
Type of Measure: Target measure; Cumulatively reported
Measure Contact: Sylvia Kawabata, EPA Region 10, Columbia River Program
firstname.lastname@example.org | (206) 553-1078
Methodology for computation of results: Cleanup acres are based on activity reports received from EPA and state or other federal agencies. The number of acres is tracked manually by a combination of EPA work efforts and state of OR and WA reporting.
Universe: 400 acres total of known highly contaminated sediment in the Columbia River Basin as assessed in FY 2006.
Baseline: 0 acres (FY 2006) because the 0 acres carried over from the clean up started in FY 2005.
Measure Language: Demonstrate a reduction in mean concentration of certain contaminants of concern found in water and fish tissue. (cumulative starting in FY 2006).
Type of Measure: Target measure; Cumulative
Measure Contact: Mary Lou Soscia, EPA Region 10, Columbia River Program
email@example.com | (503) 326-5873
Terms and phrases: "Certain contaminants of concern" are Chlorpyrifos and Azinphos methyl in Oregon West Prong, Little Walla Walla River, South of Stateline Road; Chlorpyrifos in Oregon North Fork Deep Creek (Clackamas Sub-basin); DDT in Washington Walla Walla River, RM 14.3 and Yakima River, RM 18-30.
The baseline for this strategic target is Table 1 that includes the selected contaminants for monitoring, the location for where baseline data was collected and where subsequent monitoring will occur, the baseline concentration and source of the baseline data as well as the type of sampling (fish tissue, water column, semi permeable membrane devices (SPMDs)) and the responsible party (see link to baseline listed below).
Choosing a contaminant location meant there must be historical data and the expectation of similar sampling data from the same location in the future (between now and 2014). Hence, if it is unlikely that a contaminant will be monitored at a given site, that contaminant/location should not be chosen as part of the baseline. The Columbia River Basin includes land that has a variety of uses. Many different pesticides may be used throughout the year. Spraying is more frequent during certain seasons and this may require intense monitoring and poses a challenge to consistently monitoring reduction of contaminant concentrations. Finally, quantitative concentrations for each baseline were chosen. Success in meeting the 10% reduction target will be measured in the average reduction for each contaminant at each location.
Units: Units vary due to the focus of the contaminants of concern.
1 Baseline data is from 2006 monitoring results associated with DEQ's Walla Walla Basin Pesticide Stewardship Partnership. The baseline concentrations are median concentrations found from Spring 2006 monitoring in the Basin. The detection frequency baseline is the fraction of sampling events where detections were observed.
2 Baseline data is from the Walla Walla TMDL Evaluation (Technical Report) 04-03-032 (page 47). The sampling location is the lower Walla Walla River Site (RM 14.3) above Columbia River influences. Sampling was done with Semipermeable Membrane Devices (SPMDs). Measurements are in ng/L (ppt) dissolved. The concentration is an annual average (data is from May and June 2002, August and September 2002, November and December 2002, and February and March 2003). DDT is measured as total DDT, the sum of 4,4'-DDT, 4,4'-DDE, and 4,4'-DDD.
3 This preliminary data is from the Dept. of Ecology's Yakima River Fish Tissue study (as of 1/03/07). This study will be part of the Yakima River TMDL report. Samples were collected on 10/11/06 between Benton City (about RM 30) and Horn Rapids Dam (RM 18) in the Lower Yakima River. Each sample is a composite of skin-on fillets from five individual Largescale Suckers. Three samples were averaged to determine the baseline concentration. DDT is measured as total DDT, the sum of 4,4'-DDT, 4,4'-DDE, and 4,4'-DDD.