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<br />Section 2.05.4(2)(d) Page 14 April 2022 (PR-09) <br />Revegetation. <br /> <br />Irrigated Pastureland Topsoil Preparation Procedures <br /> <br />Topsoil replacement operations may be carried out during most of the year, the exception being <br />those periods when wet conditions would preclude handling of the topsoil materials. <br /> <br /> Deep ripping of the subsurface - Upon successful completion of placing topsoil on the <br />ripped Bench 1 the topsoil will be ripped to a depth of at least 2 inches greater than the <br />depth of topsoil. This will alleviate compaction of the topsoil and assist in the removal of <br />any boundaries between the ripped Bench 1 and topsoil. <br /> <br /> Deep ripping of topsoil - Upon successful completion of placing topsoil it will be ripped <br />2 inches or greater than the depth of topsoil. This will alleviate compaction of the topsoil <br />and assist in the removal of any boundaries between the ripped subsoil and topsoil. <br /> <br /> Land leveling - A blade may be pulled behind a farm tractor to level the topsoil surface <br />and allow a smoother surface for seeding. <br /> <br /> Rock picking - Rock picking is done by a mechanical device that are pulled behind a <br />tractor that windrows rocks and then another device that picks up large rocks over <br />approximately 2.5 inches in diameter. Rocks up to approximately 24" diameter can be <br />picked up by the device. Sandstone lenses that are identified in any topsoil or Bench 1 <br />will be buried in lower Bench 1 overburden, at least eight feet below the topsoil level. <br /> <br /> Fertility testing - Three soil samples will be obtained in the field to be tested. The field is <br />defined as that area that has recently been topsoiled. Samples will be taken and analyzed <br />by a lab using the standard soil test for pH, salts, organic matter, nitrogen, potassium, and <br />phosphorous. The lab will be informed that the vegetation is irrigated pastureland. The <br />reference area will be sampled separately. <br /> <br /> Disking - Prior to final seedbed preparation, soil conditioning and weed control tillage <br />will be carried out through disking or other standard agricultural practice. Disking will be <br />used to condition soil, break up clods, and control weeds prior to seeding. If annual weeds <br />are a problem, several tillage operations may be required to get adequate control. <br /> <br /> Final Seedbed Preparation - (For irrigated areas) Cultipacking prior to seeding will be <br />conducted if land leveling did not provide a smooth soil surface for seeding. The best <br />period for tillage in these areas may be in the early spring prior to the irrigation season. <br />For flood irrigated areas - A standard marker will create furrows of approximately 4" to