805.1 805.2(a)
805.1DESCRIPTION —This work is the furnishing, placing, anchoring, and maintaining of mulch of the
type indicated.
805.2MATERIAL —
mature seed bearing stalks or roots of prohibited and noxious weeds, as defined by law.
1.a Hay. Timothy hay, mixed clover and timothy hay, or other acceptable native or forage grasses, well-cured to less than 20% moisture content, by weight. 1.b Straw. Either wheat or oat straw, reasonably free of viable seed, well cured to less than 20% moisture content, by weight.
1.c Wood Fiber. Specially prepared, biodegradable, air -dried wood fibers manufactured from 100% wood chips or bark from lumber mill processing operations, tinted with nontoxic, green dye, and containing an organic tackifier approved for use with wood fibers; manufactured to be applied with hydraulic seeding equipment; and conforming to the following requirements:
• Moisture content — 15% maximum • Organic matter(Oven -dried basis) — 95% minimum • Water holding capacity (Grams of water per 100 grams of fiber) — 1000 minimum • Tackifier content (By weight) — 2.5% to 3.5%
Submit a certified physical analysis of the product for approval before application. 1.d Pellet Mulch. A biodegradable, water -absorbing, paper -based pellet that when wetted loses its pellet shape, breaks down and adheres to other pellets, forming a thin, protective mulch mat, and meeting the following requirements:
• Paper conten t — 85% • Fertilizer — 5% • Polyacrylater — 2% to 5% • Moisture content — 5% to 8% • Dimensions — 1/8-inch diameter, 1/4 inch to 3/4 inch length • Absorption potential — minimum, 3 times dry weight 1.e Bonded Fiber Matrix (BFM). Specially prepared, water soluble, biodegradable, hydraulically applied system of long strand wood fibers held together by a bonding agent, which adheres to the soil surface and upon drying forms a continuous, insoluble, three dimensional, non- dispersible protective crust - like soil covering.
1.e.1.a Wood Fiber. Specially prepared, long strand (min. 25% 3/8- inch length), air -dried wood fibers (88% to 92% by weight) manufactured from wood chips, bark, or clean wood waste products, and conforming to the following requirements:
Moisture content 15% maximum Water holding capacity 1000 minimum (Grams of water per 100 grams of fiber)
1.e.1.b Bonding Agent. High- strength tackifier of powdered polysaccharide guar gum, b