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E-M:/ Re: Wetlands and Sludge

Enviro-Mich message from fred cowles <fecowles@yahoo.com>

This response is from the DEQ employee responsible for
the Biosolids Program (Municipal Wastewater Sludge
Disposal Program):

There is a one year isolation time from the time of
last biosolids application until land can be used for
high public contact uses such as parks.  However, the
law requires a 38 month waiting period from the last
application of biosolids until the land can be used to
grow root crops such as carrots and potatoes for human
consumption.  Because new homeowners can grow root
crops in gardens on their land that is subdivided and
developed from former farm fields, it is my opinion
that the same 38 month isolation time should apply. 
Although the risk associated with pathogens from
biosolids is significantly less than land where raw
animal manure is applied. There are no legal
restrictions on development of land where animal
manure has been applied.
Jim Johnson
State Biosolids Coordinator
Water Division
Michigan Department of Environmental Quality
Constitution Hall, 2nd Floor North
525 W. Allegan Street
Lansing, Michigan 48913
517-241-8716    fax 517-241-8133
E-mail:   johnsoj1@Michigan.gov

========== Fred
Fred Cowles

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