Monthly Report – November, 2019 Public Works Department

WATER – A total of 31,034,000 gallons of water were treated and delivered during November. 6,976,000 gallons from Alder Creek treatment plant, 9,013,000 gallons from Brownell Springs and 15,045,000 gallons purchased from City of Portland. Production at Brownell Springs was still limited to 90 gpm in November. Maximum day production was 1.47 MG on November 28. 3.48 inches of rainfall were recorded at the water treatment plant site during the month. The WTP was taken out of service by a flowmeter failure on the 27th. We were able to draw more water from the PWB source to compensate. The WTP was returned to service on the 29th.

WASTEWATER – A total of 30,910,000 gallons of sewage were treated and used for irrigation. Maximum flow was 1.24 MGD on the 29th (no rain recorded on prior days – the 29th was the day after Thanksgiving. Monthly rainfall recorded at the plant was 1.8 inches. 432,150 gallons of sludge were dewatered and landfilled. Discharge to Tickle Creek commenced on the 26th. Average BOD concentration was 7 MG/L (permit allows 10 MG/L) BOD lbs discharged were 47 lbs/day (permit allows 125 lbs/day) Average SS concentration was 19.3 MG/L (permit allows 10 MG/L) BOD lbs discharged were 128.7 lbs/day (permit allows 125 lbs/day) during the five days of discharge to Tickle Creek.