[[_____] percent sulfur]
[[_____] percent iron]
2.5
MULCH
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NOTE: Check with the local Agriculture County
Extension Service Office to determine choice of
mulch most suitable for the project area. Specify
only one type of mulch.
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Mulch shall be free from noxious weeds, mold, and other deleterious
materials.
2.5.1
Straw
Stalks from oats, wheat, rye, barley, or rice. Furnish in air-dry
condition and of proper consistency for placing with commercial mulch
blowing equipment. Straw shall contrain no fertile seed.
2.5.2
Hay
Air-dry condition and of proper consistency for placing with commercial
mulch blowing equipment. Hay shall be sterile, containing no fertile seed.
2.5.3
Wood Cellulose Fiber Mulch
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NOTE: Wood cellulose fiber mulches have been
successful on level areas or on slopes with slight
grades where sufficient moisture is present to
obtain a quick germination of grass seed. The
material should be hydraulically applied at the
following rates: Areas up to and including 3 to 1
slopes, at the rate of 1,120 kg per 10,000 sq. m
1,000 pounds per acre; areas steeper than 3 to 1 at
the rate of 1,568 kg per 10,000 sq. m 1,400 pounds
per acre. It should not be specified for slopes 2
to 1 or greater in areas where drought may prevent
germination of the seed or where runoff from heavy
rains may cut gullies through the fiber mulch. In
these areas use erosion control materials such as
specified in paragraph entitled "Erosion Control
Material."
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Use recovered materials of either paper-based (100 percent) or wood-based
(100 percent) hydraulic mulch. Processed to contain no growth or
germination-inhibiting factors and dyed an appropriate color to facilitate
visual metering of materials application. Composition on air-dry weight
basis: 9 to 15 percent moisture, pH range from 5.5 to 8.2 [_____]. Use
with hydraulic application of grass seed and fertilizer.
2.6
WATER
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NOTE: When water is Government furnished, locate
the source. Recycled or reclaimed irrigation water
SECTION 02921
Page 11
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