1600 121ST ST SE 2016-01-01 MF Import

Attachsent 2 Casper Creek I�NS (SEPA �92-89) Paqe 2 Performance Criteria The critena used for monitoring should include those basic components that comprise a healthy Palustrine scrub/shrub wetland ecosystem that is relatively undisturbed compared to the project area. As discussed above, monitoring of a restored Palustrine scrub/shrub wetland should inGude both the sUuctural and fundional elements of a Palustrine scrub/shrvb wetland ecosystem. This includes monitoring of the vegetation, terrestrial and aquatic invertebrates and vertebrates (i.e. insects, birds, mammals, fishes), channel benthos, birds, water and soil chemistry and processes such as (ood chain support. For this restoration plan eight basic criteria have been selected. The cnteria that the success of the restoration will be measured against are as follows: 1) Vepetation - Overall Objectives. The proposed revegetation plan will meet all of the proposed vegetation restoration goals forth in the Casper Creek mitigation plan. 2) Veqetatton - Speciea Mix and Percent Cover. The restored areas (wetland and buffer) shall support at least the naGve speaes set forth in the Wedand Mitigation Plan for Phase I and II. The species mix should resemble that proposed in the individual habitat categories, but strict adherence to obtaining all of the species shall not be a critena for success. By the fifth year, the percent coverage (canopy, subcanopy and understory combined) of the restored areas (access roads excluded) shall be at least 80% for the wetland areas and 509'o for the upland buffer areas. If an area inGudes more than 5096 exotic species (non-Palustrine scrub/shrub wetland species andiar non-native species) then restoration shall not be wnsidered successful for that area. As a final test of the vegetation cnteria, the species diversity, mix, and percent cover (individually and cumulative) should approximate that of similar monitored "pristlne" areas within Silver Lake watershed and other adjacent Paiustnne suub/shrub wetland ecosystems. (See box for definitian of functional PalusUine scrub/shrub wetland ecosystem.) Significant degradation of exisGng wetland areas, beyond that attributable to natural variation, shall be considered as failure of the buffer and weUend restoration woAc. 3) Aquatic Invertebratss and Vertebratea (amphibians) - Species re-colonizing the channel areas adjacent to restored and enhanced areas should br. of a suHicient diversity and ebundance to provide food chain support for species higher in the food chain. The range, disUibution, and densities of species should be similar to thoae found in functional weUand partions ot the Silver Lake Watershed and other adjacent Palustrine scrub/shrub wedand ecosystems. 4) Temestrial Insects. Palustrine scrub/shrub weUand insects necessary for tfie successful pollination of Palustrine scrublshrvb wetland plants and as food for other species within the }ood chain (birds, fish) shall be present. The presence o} the appropriate insects shall be detertnined by monitoring functional wetland areas of the Silver Lake watershed and other adjacent Palustrine scrub/shrub wetland ecosystems with similar Palustrine scrub/shrub wetland plant species.