Compost in urban soil design
Article Abstract:
Landscape designers need to take many factors into account when considering the type of soil to be used in particular environments in the US. They are aware that true topsoil is now a rare and expensive material and that it has a significant level of off-site environment impact. For this reason, they are looking at designing alternatives. It is possible to design soil that contains very few nonrenewable resources, if any at all. Sustainable components that may used in designed soil include composted organic material derived from biosolids, dehydrated washings from aggregate plants and sand from river dredgings.
Publication Name: BioCycle
Subject: Environmental services industry
ISSN: 0276-5055
Year: 1997
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Developing biosolids compost specifications
Article Abstract:
Conformance to standard specifications is essential for the desired consistency and quality in composted biosolids. These characteristics play a major role in the formulation of the topsoil in large scale landscaping and highway construction. Biosolid composts must meet the EPA Part 503 Grade A exceptional quality requirements. Some of the specifications include the carbon and nitrogen ratio, stability, maturity, mineral and organic content, and cation exchange capacity of the compost. A list of specifications for the use of compost in designing soils for transportation projects is given.
Publication Name: BioCycle
Subject: Environmental services industry
ISSN: 0276-5055
Year: 1996
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Evaluating pathogen regrowth in biosolids compost
Article Abstract:
A study conducted by university researchers in Massachusetts shows that the regrowth of pathogens in compost products is mediated by carbon availability, moisture, and microbial diversity as measured. Pathogen regrowth potential tests reveal inappropriate levels of moisture content can lead to unstable compost products. The analysis was done on 16 facilities with pathogens, E. coli densities and total coliform as the parameters.
Publication Name: BioCycle
Subject: Environmental services industry
ISSN: 0276-5055
Year: 1995
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