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Exhibit B 104,0 ROS WOOD, WETLAND INWROVEMENTS 104,1 POND EXCAVATION (2105) 6 * I Scraped topiso ikmmimum. of 12 inches) from the wetland basin and adj acent upland shall be removed entirely from the project site and not reused. No, excavated material shall be stockpiled outside of ' the grading limits without approval by the Engineer. All graded areas within the wetland basin must be finished to a fine-graded (smooth) bare soil surface suitable for native seed installation and germination. There shall be no large clunps of soil material., Sites, that are to be broadcast seeded should be tilled to a depth of 3-inches. Seed bed preparation will include deep tilling (3-6 inches), disking to break up dirt clunps, • harrowing, and packirg,. Walking on the soil should cause 'it to compact no more than 1 -inch. Excessive compaction shall be loosened before seeding. All seeding areas shall be 'inspected and approved by the Engineer prior to seeding. Contractor shall make every effort to protect all oak trees adjacent to the project area. The Contractor shall protect existing draintile pipes draining to the wetland. Any alterations made to draintile pipes shall be approved by the Engineer, Midland Hills Country Club staff, and property owners as appropriate. Construction, maintenance and restoration of temporary haul roads, shall be considered as incidental. 1041 BACKFLOW PREVENTER (2501) Backflow preventer devices shall consist of a sleeved rubber "duckbilr, check valve. , Products it should be PROCO series ProFlex Rubber Check Valves or approved equal. The backflow preventors proposed must include one inlie style check valve fitted inside the pipe and a "slip slip over" check valve fitted on the outside of the pipe, 1043 PLANTING WARRANTY AND, MAWTINANCE (2575) The successful establislinent and dominance of native wetland vegetation within the wetland basin is essential to meeting the requirements ofproject permits. Therefore, a five year (60 month) maintenance period is required for all areas seeded or planted with native wetland and upland vegetation. The maintenance period begins immediately after all seeding and planting are completed as indicated on the project plains. At the end of the third growing season post final "installation, the wetland basin must posses the follow* characteristics,: 1) a nc * * of three or more native aquatic pilard must be dory ina:nt (using the 50/20 Rule as per US Anny Corps, of Engineers Wetland Delineation Manual, 1987) within the shallow marsh portion of the wetland basin; or there must be high integrity'" in co ies with low diversity (e.g., stands of arrowhead); 2) a " * of five or more native wetland plait species must be dormant (see item I for dominance test method) within the fresh (wet) meadow portion of the wetland basin; I 31) non,- native, invasive species (such as reed canary grass), must comprise less ROSEWOOD WETLAND AND MIDLAND HILLS ROAD SPECIAL PROVISIONS DRANAGE IMPROVEMENTS CITY O,F'RoSEV'ILLE PROJECT NO. ST-0843 W PROJECT NO. 1797-02 Page 10045