CCP 02-22-2000 - Laserfiche WebLink

Home Browse Search

I .. I I I I I I I .. I I I I I I I. I I Surface Water Drainage System TCAAP is part of the Rice Creek Watershed District. All surface water runoff from the site eventually flows to Rice Creek aud from there to the Mississippi River. However, depending on specific location within TCAAP, runoff may take one of three different routes to reach Rice Creek. Part of the site drains to the southwest, some drains to the east and north, and the remainder drains to the west. The southwest comer of TCAAP (about 15% of the site) drains southwest through a 60-inch pipe under U.S. Highway 10 and State Highway 96 to Round Lake. (The Anny owned the land surrounding Round Lake for a period of time.) From Round Lake, the flow continues southerly to Valentine Lake and then northwesterly to Long Lake. From Long Lake the flow goes into Rice Creek. The boundary of this subdistrict roughly runs through Buildings 105,503 and 576. The easterly half of the site drains east to Sunfisb Lake aud Marsden Lake. The overflow from Marsden Lake flows northerly into Rice Creek via a 24-inch culvert under Harnline Avenue to County Ditch No.1. The rough boundary of this subdistrict runs up Snelling Avenue and through the gravel pit east to Hamline A venue. This subdistrict contains about 40% of the site. The northerly and westerly parts of the site drain directly into Rice Creek. This subdistrict contains about 45% of the site, and is bounded by Snelling Avenue and the gravel pit on the east and Bnildings 105 and 503 on the south. The flow enters Rice Creek through three storm sewer outlet pipes ranging in size from 42 inches to 72 inches in diameter. On-site surface-water collection and conveyance facilities include catch basins, piping, culverts and ditches. Construction materials include wood, cast iron, concrete and others. The exact age of most storm-sewer components is unknown, but it is safe to assume that the oldest components date back to the early 1940s. The surface-water storage and treatment areas include the gravel pit and the lake and wetland areas. Some of the ditches may also serve as storage areas for surface water. 4. Public Utilities Electrical System Northern States Power Company (NSP) serves TCAAP with a 69 kilovolt (KV) overhead transmission line. This line enters the site at the intersection of Hamline A venue and CSAH 96, then runs northwest to four main electrical substations (Figure 6). Electricity is distributed through 13.8 KV overhead lines. Backup electricity is available through emergency 13.8 KV overhead lines. The electrical distribution system is maintained by NSP and is currently in good condition. Power has been cut to those buildings which are scbeduled for demolition. However, the remainder of the electrical facilities are currently in operation. Almost all of the equipment is overhead on wooden poles, with very few buried cables. Telephone cables are generally suspended on NSP's poles. Camiros, Ltd.lSEH, lnc./LHDL, Ltd. TCAAP Framework Plan Page 10 Chapter II