||Evaluating design and verifying compliance of wetlands created under section 404 of the Clean Water Act in Oregon /
Gwin, Stephanie E. ;
Kentula, M. E.
||NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
|| Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Wetlands--Law and legislation--United States.
Environmental impacts ;
Water pollution ;
Design criteria ;
Clean Water Act ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||vi, 122 pages : illustrations, maps ; 28 cm
Permit specifications, construction plans, and field measurements were used to examine the correlation between design and conditions 'as-built' in a population of 11 palustrine emergent marshes created in the metropolitan area of Portland, Oregon between 1980-1986. The projects ranged from six months to almost seven years in age. Data on planned and existing hydrology, wetland area, wetland shape, slopes of banks, and vegetation were collected for each site. Information on the plans for each site was gathered from the section 404 permit files of the Portland District Office of the U.S. Army Corps of Engineers and the permit files of the Oregon Division of State Lands. Results indicated that none of the wetlands studied were designed or constructed as permitted.
"July 1990." "EPA/600/3-90/061." "Contract no. 68-C8-0006." Includes bibliographical references (p. 33-35).