1. Ag Stock Watering Tank UES Measure Update Regional Technical Forum April 16, 2013

2. Ag Stock Watering TankAg Stock Watering Tank Measure Overview Current Category: Small Saver Current Status: Under Review Current Sunset Date: May, 2013 Reason for Update/Review: Response to recommendation memo; and sunset date approachingrecommendation memo Baseline Type: Current Practice

3. Summary of Updates Changes based on Recommendation Memo – Clean workbook, use latest ProCost template – Extrapolated metered site to full heating season – Used degree days as the basis for scaling the metered site savings to other heating zones – Adjust Alberta study results to NW climate temps Other Changes – Removed TMY3 data and analysis since HDD is now used to scale savings between site and other heating zones – Changed zone weighting of savings to be based on 2008 Farm and Ranch Survey data for acreage of PNW farms with “other” irrigation water sources* – Averaged data from Oregon Trail Electric (OTE) and Prairie Agriculture & Machinery Institute (PAMI) based on new data available * Indicates remaining issue to be discussed with RTF

4. Remaining Issues for RTF Discussion Recommendation memo items not completed – Note size of tank used in original study Contacted Steve Schauer at OTE but no recollection of size – Investigate sizes of tanks sold and how they compare with the tanks used in metering studies No sales data available; very few utilities provide incentives Steve Schauer stated most are small (<10 gallons) Online retail search found two main sizes (8 and 14 gallon)

5. Remaining Issues for RTF Discussion See SavingsData&Analysis Tab in workbookworkbook Weighting for zones – Based on council zone weights (res. population based) – Based on farm and ranch survey for “other” irrigation water uses (acreage based)

6. Staff Proposal Further analysis of unfulfilled recommendation memo items is not worth effort given minimal use of measure and categorization as a Small Saver. Approve the updates to the Ag Stock Watering Tank UES measure; Set the measure status to “Active”; and Change the sunset date of May, 2018

7. Decision “I _______ move to approve the updates to the Agricultural Stock Watering Tank UES measure; set the measure status to “Active”; and change the sunset date to May, 2018.”