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• 3. Sanitary Sewer System The City of Falcon Heights owns and maintains a sanitary sewer system which also serves the University campus. The City discharges all sanitary flows to the Metropolitan Council Environmental Services (MCES) interceptor system. The State Fair operates and maintains its own sanitary sewer system separate from the City's system. The City's sanitary sewer system facilities include: One small sanitary sewer lift station Forcemain associated with the lift station • A network of gravity sewer piping and manholes Existing Sanitary Sewer System The City's sanitary sewer collection system has been in operation in excess of 50 years and consists of approximately 68,800 LF of gravity sewer. A lift station serves a small area near Larpenteur Avenue and Coffinan Street. The existing sanitary sewer system facilities are illustrated on Figure 7, on the following page. This figure shows the City's existing collection and trunk sewer system. The extents of the existing sewer service area is not expected to increase through 2030. • The system is constructed of various pipe materials including vitrified clay pipe (VCP) and polyvinylchloride pipe (PVC). The collection system ranges in pipe size 8" to 18" in diameter. Sewer flows generated in the City are collected and conveyed to number of discharge points into the St. Paul sanitary sewer system. A MCES metering station is located by the intersection of Hamline Avenue North and Hoyt Avenue West and measures sanitary sewer flow entering the MCES interceptor system. All other discharge points are estimated by MCES for billing purposes and are based on water consumption rates. In 2004 MCES re-evaluated this method to consider significant irrigation use by the Fairgrounds and university resulting in a lower and more accurate sewer flow entering the MCES system. Existing Sanitary Sewer Condition The evaluations provided in this report are based on field inspections, construction as- built drawings, and discussions with city staff. The condition of the sewer collection system was evaluated using previous closed circuit televised (CCTV) inspection records. The lift station was evaluated for pumping performance. A pump down test was performed at the site to estimate the pumping capacities. This data was then compared to the rated capacities. Based on this information, the lift station has the capacity to • continue serving its area where it is located. Falcon Heights Comprehensive Plan 2008 Draft -January, 2008 Part III: Infrastructure, Page III-17