Monthly Report – February, 2020 Public Works Department

WATER – A total of 33,026,400 gallons of water were treated and delivered during February. 10,711,600 gallons from Alder Creek treatment plant, 7,729,000 gallons from Brownell Springs and 14,585,800 gallons purchased from City of Portland. Peak day production was 1.67 MGD on February 3rd. 6.75 inches of rainfall were recorded at the water treatment plant site during the month.

WASTEWATER – A total of 78,870,000 gallons of sewage were treated and discharged to Tickle Creek. Maximum flow was 2.68 MGD on the 16th (rainfall was 1.17″ on the 15th and 0.1″ on the 16th). Monthly rainfall recorded at the plant was 3.67 inches. 288,440 gallons of sludge were dewatered and stored. Average BOD concentration was 12.1 MG/L (permit allows 10 MG/L) BOD lbs discharged were 136 lbs/day (permit allows 125 lbs/day) Average SS concentration was 19.5 MG/L (permit allows 10 MG/L) SS lbs discharged were 223 lbs/day (permit allows 125 lbs/day). There were permit violations for weekly and monthly SS and BOD concentration and loading in February. The return sludge pump was replaced with a new unit; one of the effluent pumps was replaced; an air leak in the aeration basin piping was repaired; blower #4 was repaired as were two leaks in the domestic and process water piping.