GENERAL45835 - Laserfiche WebLink

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Broadcast Seeding Any or all of the following methods for broadcast seeding areas where drill seeding is not practicable, may be used at the CONTRACTOR'S option. Regardless of the method used, broadcast seed shall be covered about one-quarter (1/4) to one-half (1/2) inch deep by flexible-tine harrowing or a similar method. If seed is broadcast, either a pneumatic seeder, a hydraulic seeder, or a hand or machine operated seeder capable of uniform application of prescribed quantities shall be used. Hydroseeding, if employed, shall be done prior to hydromulching, in a separate operation. Pneumatic Seeding All materials shall be applied by blower-type equipment using air pressure and adjustable disseminating device whereby dry fertilizer and dry seed shall be applied in prescribed quantities uniformly onto the specified area. Machine or Hand-Operated Spreader Seeding shall be performed using hand operated or machine spreaders or seeders whereby dry seed shall be applied in prescribed quantities uniformly on specified areas. Mulching and Erosion Control Blankets All disturbed areas shall be mulched following seeding. Mulch shall be applied not later than 24 hours after seeding. Mulching shall not be done when wind velocity exceeds fifteen miles per hour. The interseeded areas do not need to be mulched. Mulching procedures specified below shall be applied to seeded areas according to their designation by slope steepness. Two slope types are identified: 1. Less than approximately 33$. 2. Greater than 33$. On slopes less than approximately 33$, any one of two mulching procedures shall be used: 1. Hay or straw mulch, crimped 2. Hydromulch with tackifier On slopes greater than approximately 33~ and one of three mulching procedures shall be used: 1. Hay or straw mulch with non-asphalt tackifier 2. Hay or straw mulch with netting 3. Hydromulch with tackifier. -20-