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Demonstration Area k3 <br />• Demonstration Area J73 consists of some 8.5 acres of reclamation located east of County <br />Road tJ179, which was seeded in 1979. <br />The area-weighted average of the ECCS assessment values yields an average condition <br />value of 16, which places Demonstration Area /13 in the stable erosion condition class. <br />The USLE calculation, utilizing a topographic factor of 3.5 (200 foot average slope length, <br />15% average slope gradient) and a cropping factor of 0.07 138°k canopy cover, 49% <br />ground cover/litter) yields a calculated soil loss of 2.35 Tons/Acre/Year. In comparison, <br />the surrounding areas give a calculated soil loss of 2.69 tons/acre/year if the cropping <br />factor of 0.08 is used (Native Pasture Reference Area, as this community type is <br />immediately adjacent to all three demonstration areas) and all other factors held equal. <br />If the actual LS factor derived from the adjacent undisturbed area LS reference points <br />(shown on Map 4A adjacent to Demonstration Area 3) is utilized, the average slope <br />gradient of 15% and average slope length of 250 feet yields an LS value of 4.0. this in <br />• turn yields an annual projected soil loss of 3.07 Tons/Acre/Year from the immediately <br />adjacent undisturbed area. Please note that conservative values of slope length and <br />gradient were utilized for the undisturbed area in deriving the LS factor value. Therefore, <br />CYCC feels that Demonstration Area Jf3 meets the criteria of Rule 4.05.2(2) <br />u <br />TR 90-06 Exhibit 3 - 50 Revised 02/26/91 <br />