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r . , The building plan also shows the septic mound being partially located in wetland#2's buffer area. If installation of the septic system disturbs the wetland buffer,these areas will need to be reseeded with an approved native seed mixture. A site evaluation of wetland#2's buffer was also conducted on 231u1y 2007 to determine the condition of the vegetation in the existing upland buffer. Common buckthorn was again found to be a dominate species in wetland#2's buffer. As is stated above buckthorn is considered to be an undesirable plant species and should be removed from the upland buffer area. After buckthorn is removed,bare or disturbed areas in the understory should be seeded with a shade tolerant,approved native seed mix(see general comments below). There are also low densities of garlic mustard in wetland#2's buffer. This undesirable plant species should also be removed from the buffer and bare areas should be overseeded with a native seed mixture. During the site visit it was also documented that wetland#2's buffer had been disturbed by the installation of small utilities(about a 3 foot swath following along the chain-link fence). This disturbed area will need to be reseeded with an approved native seed mix. General Comments: All buckthorn removal should be done using hand tools as�arge equipment can further disrupt the wetland buffer. Buckthorn should be cut and the remaining stems should be treated with an approved herbicide following label instructions. Treating the cut stumps will help prevent regrowth of the buckthorn. Garlic mustard can be controlled by either hand-pulling or through herbicide application—use an approved herbicide(such as gylphosate)following label directions. Herbicide should be applied during early spring or late fall for the best results(plants must be green and actively growing). Garlic mustard is a biennial plant and needs to be monitored as hidden seedlings may flower the year following treatment. As described above all disturbed areas will need to be reseeded with an approved native seed mix.According to the ordinance Div.3 Sec.78-1605(3)the seed mix must contain at least 12 pounds(PLS)per acre of native prairie grass seed and S pounds(PLS)per acre of native wildflower seed. The grass mixture must contain a minimum of four species while the wildflower mixture must contain a minimum of five species. The seed mix used must be submitted to the city prior to planting for approval. Silt fences shoutd be placed upslope of both wetlands upland buffers prior to construction. These fences should stay in place until all construction activities have been completed. Silt fences will make the upland buffer boundaries more obvious and help protect the wetland from moving sediment during construction. We recommend that the city take an escrow in the amount of 52,000 to ensure buckthorn and garlic mustard are removed,bare areas are seeded,and for future compliance checks. Poge 1 of3