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Groundwater Claims There are three groundwater claims on file with broad legal descriptions that overlap the lands appurtenant to S4-84509-J. These included G4-11228CL, G4-086833CL, and G4-102477CL. G4-11228CL was filed during the 1997-1998 claims registry, and claims the right to 2-3 gpm for domestic use and livestock water. Based on the information presented on this claim, it likely is for a domestic, permit exempt use per RCW 90.44.050 and predates current limitations on new uses. Being that this claim is not used for irrigation, it has no bearing on irrigation related to the water right being considered in this application. G4-086833CL was filed during the 1997-1998 claims registry, and claims the right to 10 gpm for domestic use. Being that this claim is not used for irrigation, it has no bearing on irrigation related to the water right being considered in this application. G4-102477CL was also filed during the 1997-1998 claims registry, and claims the right to 1 cfs, 600 acre-feet per year for irrigation and livestock. The place of use described in the claim is the SE¼ of Section 18, T. 18 N., R. 20 E.W.M. It appears that J. Wayne McMeans, the person who filed the claim, once owned lands east of those appurtenant to S4-84509-J, and, per the site visit, Mr. Treat does not use this water right to irrigate his property. As such, the stated irrigation area under the claim was overly broad and inco.nsistent with actual use of water for at least the past ten years. G4-102477CL is not and may never have been appurtenant to the lands associated with S4-84509-J. Trust Water Calculations This section describes how the nonconsumptive and consumptive water use values were calculated to identify how much water was used to deliver water to the crop (nonconsumptive) and how much water was lost to transpiration from the crop and evaporated from the soil surface or during application (consumptive). This calculation is important because where a trust water right can be protected instream depends on the consumptive and nonconsumptive portions. The primary reach, which is the location from the historical point of diversion to the point of return flows, consists of nonconsumptive and consumptive water. While the secondary reach, the area downstream of where return flows enter back into the stream, is comprised of only consumptive water. In absence of reliable, direct water use records, Ecology estimates water use according to GUIDANCE1210 that relies on crop duties from the Washington Irrigation Guide (WIG) to estimate water use. The application efficiency for this water right was determined by the court awarded water duty (acre- feet authorized/acres authorized) and the crop irrigation requirement (CIR), as reported in the WIG. Generally, clover is used as a surrogate for Timothy hay in water use calculations . The CIR prescribed in the WIG for clover in the Ellensburg area is 2. 7625-feet of water. The authorized per-acre water duty for this water right is 4.594-feet (275.64 AF/ 60 acres). To find the application efficiency the CIR was divided by the water duty, which results in and application efficiency rate of 60.13-percent. Table 1 in Ecology's GU/D-1210 provides a range for flood irrigation as between 35 and 60 percent. Because the calculated application efficiency is very close to the average range provided in GUID-1210, and because the adjudication generally considers site conditions and past use in determining water duties, the calculated application efficiency was used for developing the trust water right schedules. To determine the total consumptive use ratio, the average evaporative loss listed in GUID-1210 Table 1 was added to the calculated application efficiency. This results in a consumptive use ratio of 65.13%. Change Report of Examination Page 9 of 15 Water Right File No. CS4-01141sb10