topsoil to determine its suitability and the
possible need of pH adjusters or soil conditioners.
Delete these requirements in developed areas and on
small projects where planting is minimal.
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Add conditioners to topsoil as required to bring into compliance with
"composition" standard for topsoil as specified herein.
2.3.1
Lime
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NOTE: Use ASTM C 602 calcium carbonate equivalent
(C.C.E.) as specified in Table 1: for burnt lime,
C.C.E. shall not be less than 140 percent; for
hydrated lime, C.C.E. shall not be less than 110
percent; and for limestone, C.C.E. shall not be less
than 80 percent.
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Commercial grade [hydrate] [or] [burnt] limestone containing a calcium
carbonate equivalent (C.C.E.) as specified in ASTM C 602 of not less than
[_____] percent.
2.3.2
Aluminum Sulfate
Commercial grade.
2.3.3
Sulfur
100 percent elemental
2.3.4
Iron
100 percent elemental
2.3.5
Peat
Natural product of [peat moss] derived from a freshwater site and
conforming to [ASTM D 4427] [as modified herein]. Shred and granulate peat
to pass a 12.5 mm 1/2 inch mesh screen and condition in storage pile for
minimum 6 months after excavation.
2.3.6
Sand
Clean and free of materials harmful to plants.
2.3.7
Perlite
Horticultural grade.
2.3.8
Composted Derivatives
Ground bark, nitrolized sawdust, humus or other green wood waste material
free of stones, sticks, and soil stabilized with nitrogen and having the
following properties:
SECTION 02921
Page 9
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