8.5. & 8.6. & 8.7. SR 05-15-1995

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Mr. Steve Ach April 19, 1995 Page Two 2. Sanitary Sewer and Water • This piece of property is currently within the City's urban service district, although the remainder of the Brentwood Addition is not within the urban service district. Sanitary sewer and water to serve this site would come from Jackson Avenue at approximately the Freeport Avenue intersection. With the Elk Park Center project, sanitary sewer and trunk watermain were stubbed under Jackson Avenue at the intersection of Freeport Avenue. Since, generally speaking, the urban service area runs east and west with this particular piece of property being the northerly extreme, the route to bring sanitary sewer and water to this site is westerly thru the vacant piece of property adjacent to Jackson Avenue. The sewer water would then extend northerly around the St. Andrew cemetery to 193rd, then northerly along Holt Street to the project site. The sanitary sewer water would pass approximately 4-6 existing residential homes, and would also provide service to the vacant property just east of Jackson Avenue. Given the size of this facility, it is likely that the watermain would need to be looped to provide adequate fire flow. In order to provide for looping, a crossing under TH 169 would have to be made, and a connection to the existing watermain in the Hillside Crossing development on the east side of TFi 169. 3. Storm Drainage The sketch plan shows a fairly large retention pond at the southerly part of the project, with long narrow retention ponds running adjacent to Holt Street up to the intersection of 197th Avenue. Obviously, this type of facility would generate a substantial amount of runoff. According to City policy, sedimentation ponding would need to be established on site to control the quality of the runoff. The outlet from the storm drainage system would likely be, again, under TH 169 to the existing storm sewer facility in the Hillside Crossing development. There was additional capacity established in that drainage system for the eventual development of this .piece of property. If this project is to proceed, a detailed storm sewer analysis would need to be submitted, indicating the total amount of runoff from the site, amount capacity available in the Hillside Crossing system, and the amount ponding required on site to make the system work. We would mention initially that we are not in favor of these long narrow ponds adjacent to Holt Street. We would much prefer a large single retention pond. There is an internal storm drainage piping system shown for the parking lot. Although no storm sewer is shown on Holt Street, with the construction of the new urban street catch basins and pipe would need to be established along its length to • collect runoff from this area.