Laserfiche WebLink
Seedbed Preparation <br />The seedbed shall be firm. Trash, weeds and other debris that will interfere with seeding <br />operations shall be removed or disposed of as approved by the PROJECT MANAGER. <br />On sites where equipment can operate, the seedbed shall be adequately loosened (four to six <br />inches (4" to 6") deep) and smoothed. Chiseling, discing, harrowing or cultipacking may be <br />required. Work shall be done on the contour where practicable. <br />On sites where equipment cannot operate, the seedbed shall be hand-raked or otherwise <br />prepared by hand by scarifying to a minimum depth of one inch (1") to provide a roughened <br />surface so that seed will stay in place. <br />Seedbed preparation shall be suspended when soil moisture conditions are not suitable for the <br />preparation of a satisfactory seedbed as determined by the PROJECT MANAGER. <br />Seeding <br />The designated seed. mixture shall be sown uniformly on the prepared areas. Seeding shall <br />not be done if the ground is frozen. Some areas, such as rock outcrops, etc., within the work <br />limits may not be designated to be seeded. <br />Drill Seeding. In all areas where practicable and where the area to be seeded exceeds one (1) <br />acre, seeding shall be performed with a grassland drill with depth bands and seedbox agitator <br />and equipped with either packing wheels or a cultipacker. The drill shall be capable of <br />properly handling the seed on all slopes designated for this method. Seed shall be drilled <br />across the slope, where practicable. The distance between drilled furrows shall not be more <br />than twelve (12) inches. Seed shall be planted one-quarter inch (1 /4") to one-half inch (1 /2") <br />deep. <br />Broadcast Seeding. Seeding shall be performed using hand-operated or machine seeders <br />whereby dry seed shall be applied in prescribed quantities uniformly on specified areas. <br />Broadcast seeding shall be used where drill seeding is not practicable, or where the area to <br />be seeded is less than one acre, or may be used at the CONTRACTOR's option. Broadcast <br />seed shall be covered about one-quarter (1/4) to one-half (1/2) inch deep by flexible-tine <br />harrowing or a similar method acceptable to the PROJECT MANAGER. One to two operations <br />may be required to obtain adequate coverage as specified by the PROJECT MANAGER. <br />Mulching <br />Hay or straw mulch shall be applied uniformly at the rate of two (2) tons per acre over seeded <br />areas. Hydromulch shall be applied at the rate of one and a half (1 1/2) tons per acre. Mulch <br />shall be applied to the designated areas immediately after seeding and not later than 24 hours <br />after seeding has been performed. Mulching shall not be done when the wind velocity <br />exceeds fifteen (15) miles per hour. <br />Stabilizing Mulch <br />On areas larger than one (1) acre a mulch crimper shall be used to stabilize or anchor the <br />mulch into the soil after hay or straw mulch has been spread. The crimper shall be equipped <br />with scrapers to keep the blades clean. Spacing of crimper blades shall not exceed nine <br />inches (9") . On areas less than one acre crimping must be achieved by hand with a suitable <br />tool, such as a spade, on 18" centers. <br />17