Compost Manufactured Topsoil Specfications - Athletic Fields
Turf Establishment with Compost Manufactured Topsoil (CMT)
Uses:
CMT shall be used wherever the establishment of turf is required.
Description:
This work shall consist of incorporating compost with soil to produce a Compost Manufactured Topsoil (CMT) capable of providing a superior plant growth medium. This specification applies to all types of turf establishment methods including seeding, brillion seeding and hydroseeding.
Products:
Compost Manufactured Topsoil (CMT), shall consist of a uniform mixture of compost and base soil to achieve the CMT product specifications. Product descriptions for compost and base soil are as follows:
CMT Ingredients
Compost used in the production of CMT shall be an organic substance produced by the biological and biochemical decomposition of source separated organic materials, that may include leaves and yard trimmings, food or industrial residuals, and/or municipal biosolids. The product shall not contain levels of substances which are toxic to plants and shall be reasonably free (<1% by dry weight) of man-made foreign matter. Compost shall meet USEPA 40 CFR Part 503 standards for Class A, Exceptional Quality compost, as well as all applicable state standards for its intended use.
Base soil shall consist of loam, sandy loam or loamy sand in texture (USDA soil classification). It shall be free of stones, lumps, plants, weeds, roots and other debris over 2 inches in any dimension. Base soil shall not contain levels of substances that shall inhibit or otherwise be harmful to plant growth.
Product Parameters:
| | Final Soil Specifications | | | | Compost Manufactured Topsoil | pH | 6.0-8.5 | 5.0-8.0 | 6.0 - 7.8 | % Organic Matter | >40% | 0-5% | 6% - 20% | Particle Size | <1” | < 2”, USDA Class: Loam,
Sandy Loam, Loamy Sand | < 2”, USDA Class: Loam,
Loam, Loamy Sand | Salts/conductivity | Must be Reported* | <2mmhos/cm* | <2mmhos/cm** | Carbon:Nitrogen Ratio | 15-25:1 | N/A | N/A |
* The soluble salt concentration of the compost and base soil may vary but must be reported.
** After handling, placement and watering, final level should be less than 2mmhos/cm.
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Construction Requirements
The contractor shall provide the owner with the following information:
- The source(s) of compost and base soil.
- Evidence of compost compliance with EPA 40 CFR Part 503 as a Class A, Exceptional Quality compost (pathogen, metals, and vector attraction reduction criteria) as well as applicable state and local regulations.
- Representative compost analyses for pH, % organic matter, conductivity, total nitrogen (TN), phosphorous (P205), potassium (K2O), calcium (Ca), magnesium (Mg), and sodium (Na).
- Compost supplier references documenting a minimum of three years experience providing more than fifty thousand (50,000) cubic yards of compost to similar projects.
Manufacturing/Placement Requirements
CMT mixing shall be accomplished by means of rolling and tumbling by front end loader and/or bulldozer, by processing in a mixing plant or topdressing the compost and rototilling. The material will be mixed sufficiently to produce a homogeneous soil, free of lumps and clods.
CMT shall be placed by the construction contractor using conventional earthmoving equipment. The soil will be spread and compacted to the uniform final depth in the approved project design.
Method of Measurement
CMT will be measured by the cubic yard as determined by actual surface measurement of the lengths, widths and depths of the topsoil area.
Basis of Payment
The CMT shall be paid for at the contract unit price per cubic yard complete, in place and accepted.
earthlife™ Compost provided by New England Organics, 5 Fundy Rd., Falmouth, ME 04105 (1-800-933-6474) meets the above compost product parameters.
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