TABLE 6–16 Summary of Data from Previous Tables on Wetland Permit Implementation, Compliance, Ecological Success, and Monitoring Frequency

Parameter

No. of Studies

No. of States

Range

Mean

Median

1. % Mitigation attempted for required mitigation permits (778+ permits; Table 6–3)

8

7

28 to 100

76

70

2. % Compliance for mitigation required, based on field inspections

 

a. % area gain (loss) (Table 6–13)

8

5

(92) to 44

(17)

(32.5)

b. % permits issued (Table 6–12)

19

6

0 to 100

58

53

3. % Ratio required and ratios met (post-construction; Table 6–5)

9

4

17 to 90

61

62

4. % Functional equivalency of completed mitigation (Table 6–11)

9

4

0 to 67

21

18

5. % Sites insufficiently monitored for permitted mitigation (Table 6–7)

7

6

40 to 90

63

61

NOTE: The average of a tie for the median value is given.

Record Keeping

The committee found that in many cases, mitigation was required to offset impacts; however, some project files did not contain a mitigation plan or other explicit agreements on the size and type of mitigation to be provided. Because mitigation projects extend over many years, mitigation plans need to be on record, with mitigation requirements clarified, so that all subsequent parties involved in the evaluation of the mitigation site know exactly what was required.

Many of the problems of tracking wetland loss and gain resulting from mitigation implementation could be addressed by improved recordkeeping on the part of the Corps. Through improved compliance inspections described in Chapter 8, information should be included in a national database, such as the Corps Regulatory Analysis and Management System (RAMS) database. If each Corps project manager followed data-entry quality-assurance measures, then wetland losses and gains could be tracked more accurately on a national scale.

CONCLUSIONS

  1. It appears that the performance standards sought in compensatory mitigation have not often been well defined.



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