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• Mr. Steve Ach July 17, 1996 Page Three C. PRELIMINARY PLAT • It is assumed that the sanitary sewer and water improvements in this development will be public, while the streets and drainage system will be private. Therefore, utility easements will be needed over the proposed utility improvements. • The Final Plat for this development should restrict all access to Jackson Avenue. • We question whether the four single-family lots in the southwest corner of the development are an appropriate use. The immediately area is primarily made up of apartments and duplexes. • Lot 4 in the southwest part of the project is a single-family lot which is essentially a corner lot. Therefore, according to City Ordinance, it requires 100 feet of frontage on Highland Road and requires a larger setback along the private interior road. • The Preliminary Plat should show the adjacent properties and their zoning. D. PRELIMINARY UTILITY PLAN • • The concept for drainage is to collect the runoff internally in a small diameter storm sewer system and route it to a pond located in the southeast corner of the site. This pond would provide quality control. It should also provide quantity control and then outlet into the existing storm sewer on Jackson Avenue. We would point out that the concept seems reasonable, but a detailed storm drainage design will need to be submitted and reviewed prior to final approval. • Sanitary sewer service is provided by extending sewer into the site from Jackson Avenue at the location of Freeport Avenue. Eight-inch diameter sanitary sewer is then extended both north and south to serve the proposed condominiums and single-family lots. To the south, it is extended to Highland Road and then westerly to approximately the plat boundary. To the north, it is extended to 193rd and then west to the plat boundary. More detail will need to be provided in the future on the depth of the sanitary sewer and then reviewed relative to other areas to be served to see if any additional depth will be required. • The watermain is extended into the plat from the same location. There is a 16-inch existing watermain along Jackson Avenue in the location of the Freeport Avenue intersection. This is brought into the development and extended to the north and south. There is a need to provide a trunk sized • loop from Jackson Avenue to the southwest corner of the plat for future looping between the northwest area of the City and the northeast area of the City. 230/261-1517.jul