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Northern Tilth provides organic waste recycling technical services.
Our goal is to increase the use of organic wastes as soil
amendments while helping to build the science of residuals recycling and soil
fertility. Northern Tilth's clients range from generators of
organic wastes, such as paper mills and food processors, to
residuals management companies that focus on
soil-based recycling solutions, to farmers integrating
organic matter-based materials into their nutrient management
programs.

While a large body of experimental data and field experience exists for some
organic wastes, such as manures and biosolids, little is known about the interactions
in a soil media for many other by-products that may have benefits as soil amendments.
Northern Tilth specializes in research, development and initiation of recycling
programs for these newer materials. Northern Tilth also specializes in working with
complex regulatory issues related to soil-based recycling, such as determining
environmentally sound soil blending recipes, assessing potential
contaminants in soils, and improving soil nutrient balance when using organic-matter
based soil amendments.
Andrew Carpenter opened Northern Tilth in December 2003 after managing organic
waste recycling projects in northern New England for ten years. During that time,
Andrew received an MS in Plant, Soil and Environmental Science from the
University of Maine, where his research and field work focused on the
biogeochemistry of topsoil manufactured with paper mill residuals. For
additional information, please call Andrew Carpenter at the Northern Tilth
office in Belfast, Maine (338-5500).
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