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EXHIBIT "D" <br />c'fATF` O <br />F r� <br />n <br />�F�y 7RR9 `�y <br />STATE OF WASHINGTON <br />DEPARTMENT OF ECOLOGY <br />1250 W. Alder Street • Union Gap, WA 98903-0009 0 (509) 575- <br />2490 <br />June 19, 2023 <br />Patti Stacey <br />Kittitas County Solid Waste <br />925 Industrial Way <br />Ellensburg WA 98926-2886 <br />Re: 2023 Agronomic rate approval <br />Dear Ms. Stacey: <br />Please accept this letter as an approval of agronomic rates for your sites where you plan to <br />grow winter wheat (with native vegetation) in the fall of 2023. <br />Based on soil sample test results submitted on June 15, 2023, and the nitrogen need of <br />winter wheat (81 1 bs N/acre/year) with an estimated targeted grain yield of 30 bushels /acre <br />(Note: the estimated grain yield was adjusted to 30 bushels from 35 bushels, a usually <br />estimated targeted yield, due to the fact that no vigorous winter wheat growing occurred in <br />the spring of 2022), 1 have evaluated and approved the following agronomic rates and total <br />gallons for each site shown in the following Table: <br />Application rate and total gallons of septage for each site <br />Sites Acres Application rate Total gallons <br />(gallons/acre/year) <br />2.2 <br />A-B <br />2.2 <br />10,596 <br />23,312 <br />B-A <br />2.2 <br />10,212 <br />22,466 <br />2.2 <br />C-A <br />7.0 <br />26,192 <br />183,344 <br />C-B <br />7.0 <br />22,135 <br />154,945 <br />7.0 <br />No Application <br />D-A <br />6.2 <br />27,519 <br />170,618 <br />6.2 <br />No Application <br />