Significant portions of compost are an essential part of many bioretention and other green infrastructure soils. Compost is a beneficial complement to the largely inert aggregate used to provide rapid infiltration in these mixes: It stores significant moisture—reducing peak and total flows, has a high capacity to trap nutrients and contaminants, and boosts the biological… More
Writing Bullet Proof Resistant Soil Specifications By Howard Stenn, Stenn Design Soil specifications with unnecessary, contradictory or unverifiable standards are an invitation for plant and drainage problems, project delays, and ensuing conflicts over responsibility. Problematic provisions often accumulate in office specifications—added for a particular project or not removed when a divergent section is added –and… More
Over the past 20 years compost has become a standard amendment for landscape site soils and topsoil mixes, but specifications are far from standardized. While regional and project-specific conditions require variation in compost quality, there are basic parameters that every compost should meet for use in landscapes. There are also some common provisions that should… More
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