CCP 08-09-1999 - Laserfiche WebLink

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e e e CITY OF ARDEN HILLS MEMORANDUM DATE: July 26, 1999 TO: Brian Fritsinger, City Administrator Dwayne Stafford, Public Works Director 1J)'. Sauitary Sewer Repairs/Budget Implications FROM: SUBJECT: Background The City of Arden Hills has budgeted $75,000 for sanitary sewer repair in 1999, and had included $125,000 in the year 2000 Capital Improvement Plan,as a result of known problems with the infrastructure. These problems were identified earlier as part of the televising of the system. Repair Work Priorities The highest priority area for repair next is the 12" clay line running east to west from Old Highway 10 to approximately 3,000' west behind the Lake Valentine townhomes. This line has numerous cracked pipes, leaking joints, and root problems. To evacuate this line and replace it would require a construction easement and a 100' swath of trees to be removed for access and excavation. The alternative is lining the existing pipe as the City has done in other areas. This work is performed from above ground with minimal damage to the surrounding area. The City Engineer estimates this repair will cost $150,000. The second highest priority is a sag in the 8" sewer line under County Road E-2, which services approximately halfthe Chatham Avenue area, and connects to the 12" clay line referenced above. This sag is at least the diameter of the pipe as the camera showed during televising. Sags of this magnitude fill in with sediment, resulting in eventual blockages and backups. The City currently cleans this area four (4) times a year, as it was a known problem area. The City Engineer estimates costs to repair this sag to be $50,000. Recommendation The Public Works Director recommends Council authorize staff to combine the two (2) referenced repairs, and seek bids for the repairs, using budgeted 1999 and 2000 monies for the combined project. The Public Works Director and City Engineer believe that the larger combined project will result in more aggressive bidding.