Monthly Report – Public Works Department – January, 2015

WATER – A total of 27,574,300 gallons of water were delivered, 2,245,000 gallons from Alder Creek treatment plant, 11,130,000 gallons from Brownell Springs and 14,199,300 gallons purchased from City of Portland. 5.77 inches of rainfall were recorded at the treatment plant site during January. The effluent flow meters at Alder Creek Treatment Plant and at Brownell Springs were calibrated. There were problems with some automated valves installed at the Water Treatment Plant as part of last years’ improvements but they are still under warranty and the vendor is replacing them. City staff drained the 1 MG Vista Loop steel reservoir early in the month in order to have the interior coating inspected. For the most part the coating was in very good shape. There was some significant corrosion in the roof beams (the portion of the reservoir that is not submerged) so we are having a structural engineer come out in February to evaluate it.

WASTEWATER – A total of 48,180,000 gallons of sewage were treated and discharged to Tickle Creek. Minimum flow was 1.0 MGD on the 29th. Maximum flow was 3.08 MGD on the 18th. (rainfall was 2.0 inches on the 17th and 0.55 inches on the 24th). A total of 3.75 inches of rainfall was recorded during January.  BOD concentration was 6.2 mg/l; BOD loading was 78 lbs.; permit allows 10 mg/l and 125 lbs.; SS concentration was 6.1 mg/l; SS loading was 61 lbs.; permit allows 10 mg/l and 125 lbs.   No sludge was processed, hauled or spread during the month. The pumps at Marcy St.; Northside, Southside, Southeast, Southwest and Meinig Ave. lift stations ran a total of 455 hours with no significant problems. 

STREETS – The street sweeping contractor spent 41 hours sweeping streets and collected more than 8 tons (19 cu. yds.) of debris, covering 140 lane miles.

PARKS / OTHER – Parks staff removed holiday decorations from City facilities. PW staff continued cleaning storm drain lines and catch basins.