WATER – A total of 57,301,361 gallons of water were treated and delivered during August. 27,839,000 gallons from Alder Creek treatment plant; 8,820,000 gallons from Brownell Springs and 20,642,361 gallons purchased from City of Portland. Peak day production was 2.37 MGD on August 18th. 0.58 inches of rainfall were recorded at the water treatment plant site during the month with a peak of 0.15 inches on the 20th. A specialized coupling failed on one of the effluent pumps at the water treatment plant which caused us to purchase more water from Portland until a replacement could be air-freighted in. Veolia is now keeping a spare of this item on site.
WASTEWATER – A total of 27,500,000 gallons of sewage were treated and pumped to Iseli Nursery for irrigation use. Maximum flow was 1.0 MGD on the 13th and 14th (no rain prior to or during these days). Monthly rainfall recorded at the plant was 0.10 inches with a peak of 0.02 inches (no date). 493,000 gallons of sludge were dewatered and processed during August. Monthly Average Effluent BOD was non-detect. Monthly Average Effluent TSS was 2.0 mg/l. Monthly BOD and TSS limits do not apply when effluent is used for irrigation purposes. These figures are shown to demonstrate treatment efficiency. The plant was in compliance with permit limits during the month of August. Aeration basin #1 was drained and removed from service in preparation for cleaning. Filter fabric on one effluent filter train was replaced with new materials, the fabric on the other filter will be replaced in September.
The contractor for the condition assessment improvements at the treatment plant mobilized on site in August and began demo and prep work on aeration basin #1. Work on the collections system rehabilitation project continued in August in Basin 8. All main line and lateral bursting was completed and all main line liners were installed with only lateral lining and trench restoration remaining in Basin 8.
STREETS – The City’s street sweeping contractor spent 75.25 hours sweeping streets covering 175 travel and lane miles and collecting and disposing of 16.0 cubic yards of debris.