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A topsoil borrow area for final reclamation of the Refuse Disposal Area (RDA) is shown on Map 13B. <br />This area will provide supplemental material to achieve the depth of cover required for reclamation of <br />• refuse disposal areas. Soil samples demonstrate at least three feet of suitable material exists within the <br />borrow area. An average of one foot (and not to exceed 1.5 ft.) of topsoil material will be stripped from <br />the borrow area and spread as needed on the RDA. Subsequently, the borrow area will be ripped to a depth <br />of 12-18", seeded and mulched using the range land seed mix. Shipping an average of one foot will leave <br />sufficient soils in place to adequately reve~etate the borrow area. <br />Fertilizer will be applied to the area receivine the bortowi;d material and the borrow area at the rate of 80 <br />lbs./acre of P20~ and 60 lbs./acre of nitrogen. <br />TOPSOIL BORROW AREA -SOIL SAMPLE ANALYSIS <br />• <br />• <br />Interval 0-12" 12-24" 24-36" 0-12" 12-24" 24-36" <br />Silt <br />Texture Classification Loam Loam Loam Loam Loam Loam <br />Clay 20 21 19 ?6 21 18 <br />Sand -31 38 36, 2ti 28 34 <br />Silt 39 41 45 48 51 49 <br />Saturation, % 49.5 49.5 48.5 52.9 51.4 44.9 <br />pH 6.9 7.7 7.9 7.2 7.7 7.9 <br />S.A.R. 0.24 0.3 0.36 0.26 0.39 0.75 <br />Calcium, Soluble meq/L 0.89 1.28 1.51 0.92 0.95 0.84 <br />Magnesium, Soluble meq/L 0.48 0.36 0.39 0.47 0.44 0.43 <br />Potassium, extractable mg/Kg 20 13 14 66 50 30 <br />Niira!e Gs N, soluble i 0.9 0 5 ~ 3 1 0:6 . <br />Nitrite as N, soluole 0 09 0.06 0.1 0.24 0.4 <br />Nitrate/Nitrite as N 1 0.6 0.4 1.2 0.6 0.4 <br />Phosphorous, extractable mg/Kg 1 2 <br />Sample Locati~;r ~ oc:.`:~-.~t 7uaurer.: ~ ~.ocL'.:,vest quadrant <br />Interval 0-12" 12-24" 21-. ~ ~- i 2" 1 ~-24" 2 "- 30' <br /> 5:; Silt <br />Texture Classification Loam Loam Loam Loam Loam Loam <br />Clay 20 19 16 20 24 24 <br />Sand 33 26 30 38 35 33 <br />Silt 48 55 34 43 41 44 <br />Saturation, % 50.8 48.1 30.6 47.4 48.3 47.4 <br />pH 7.4 7.7 8.0 7.1 7.8 7.9 <br />S.A.R. 0.17 0.44 2.01 0.44 0 99 1.81 <br />Calcium, Soluble meelL 2.09 1 46 0.77 C.76 1.16 2.23 <br />Magnesium, Soluble meq/L 0.73 0.68 0.4 0.41 0.58 0.9 <br />Potassium, extractable mg/Kg 13 17 19 35 28 22 <br />Nitrate as N, soluble 0.5 0.1 0.1 0.6 0.2 0.4 <br />Nitrite as N, soluble 0.06 0.16 0.07 0.08 <br />Nitrate/Nitrite as N 0.5 0.2 0.3 0.7 0.3 0.4 <br />Phosphorous, extractable mg/Kg 1 2 <br />(Revised 04/18/97) <br />2.05-11 <br />