Fir Sawdust
0.7
Fir or Pine Bark
1.0
2.2.9
Gypsum
Coarsely ground gypsum comprised of calcium sulfate dihydrate 91 percent,
calcium 22 percent, sulfur 17 percent; minimum 96 percent passing through
850 micrometers 20 mesh screen, 100 percent passing thru 970 micrometers 16
mesh screen.
2.3
MULCHES TOPDRESSING
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NOTE: Check with the local Agriculture County
Extension Service Office for recommended and locally
available mulch material. Specify only one type of
mulch for the project.
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Free from noxious weeds, mold, or other deleterious materials.
2.3.1
Inert Mulch Materials
[Riverbank stone] [crushed pit-run rock] [granite chips] [marble chips]
[crushed bricks] [volcanic rock] [_____] ranging in size from [_____] to
[_____] mm inches.
2.3.2
Organic Mulch Materials
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NOTE: For projects at Camp Lejeune and New River,
use pine straw mulch only. Delete all other options.
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[Wood chips] [ground or shredded bark] [shredded hardwood] [bark peelings]
[pine straw mulch] [pine needles][_____].
2.3.3
Recycled Organic Mulch
Recycled mulch may include compost, tree trimmings, or pine needles with a
gradation that passes through a 65 mm x 65 mm2-1/2 inch x 2-1/2 inch
screen. It shall be cleaned of all sticks a minimum 25 mm1 inch in
diameter and plastic materials a minimum 75 mm3 inch length. The material
shall be pretreated to retard the growth of mold and fungi.
2.4
STAKING AND GUYING MATERIAL
2.4.1
Staking Material
2.4.1.1
Tree Support Stakes
Rough sawn hard wood free of knots, rot, cross grain, bark, long slivers,
or other defects that impair strength. Stakes shall be minimum 50 mm 2
inches square or 64 mm 2 1/2 inch diameter by 2.4 m 8 feet long, pointed at
one end. [Paint or stain wood stakes dark brown.].
2.4.1.2
Ground Stakes
[Wood] or [metal],
0.91 m 3 feet long.
SECTION 02915
Page 12
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