Effects of Section 404 Permits on Wetlands in North Dakota

Table 6

Table 6. Implementation of special conditions by holders of 16 individual permits for discharges of fill material into wetlands under Section 404 of the Clean Water Act; prairie pothole region of North Dakota, 1987 - 1991. Parenthetical entries are percentages

Special conditions	Implemented	Not implemented	Unknown^a	Total
Management of dredged and fill material	26 (63)	4 (10)	11 (27)	41
Management of vegetation and control of erosion	27 (84)	2 (6)	3 (9)	32
Construction protocols	8 (10)	0	69 (90)	77
Hydrologic management and control	6 (50)	1 (8)	5 (42)	12
Management of fish and wildlife resources	4 (57)	1 (14)	2 (29)	7
Restoration or creation of wetlands	1 (50)	0	1 (50)	2
Total	72 (42)	8 (5)	91 (53)	171
^aIncludes conditions, the implementations of which could not be determined by field investigation.