WATER – A total of 55,437,000 gallons of water were treated and delivered during the month. 36,079,000 gallons from Alder Creek treatment plant, 4,030,000 gallons from Brownell Springs and 15,328,000 gallons purchased from City of Portland. Production at Brownell Springs was still limited to 90 gpm and will likely remain at that level until Fall rains return. Maximum day production was 2.1 MG on August 14th. 0.94 inches of rainfall were recorded at the water treatment plant site during August. Staff met with Oregon Drinking Water Services in August to iron out the details in the proposed Bi-Lateral Compliance Agreement for cryptosporidium treatment of water purchased from Portland Water Bureau.
WASTEWATER – A total of 20,650,000 gallons of sewage were treated and used for irrigation. Minimum flow was 0.41 MGD on the 31st. Maximum flow was 0.78 MGD on the 18th. No rainfall was recorded at the treatment plant site during the month of August. BOD concentration was 11.0 mg/l; BOD loading was 61 lbs; permit allows 10 mg/l and 125 lbs.; SS concentration was 20.8 mg/l; SS loading was 115 lbs.; permit allows 10 mg/l and 125 lbs. Monthly permits limits for BOD and TSS do not apply when the effluent is used for irrigation. These numbers are shown to demonstrate treatment efficiency. Work continued on the WW Plant Optimization Improvements. All the air piping was relocated and fitted with new, temperature-resistant gaskets, the flow splitter chamber was poured and several drain and process water lines that had been damaged by the high temperatures were replaced.
STREETS AND STORM – City staff painted crosswalk markings, parking lot stripes and stop bars on City streets in August. Additionally, our striping contractor finished up the remaining centerline and bike lane striping on City streets that they were unable to complete in the Fall of 2017. City crews installed about 100 lineal feet of 18″ storm drain piping in an open storm drain channel south of the the intersection of Tupper Rd. and Dubarko Dr. There were many trees that had sprouted up in this channel over the years sometimes resulting in stormwater overflowing the channel during large storm events. The street sweeping contractor spent about 65 hours sweeping City streets, collecting 34 cu. yds. (26 tons) of debris.
PARKS, BUILDINGS AND GROUNDS – With the warm and dry summer weather the pond that supplies the irrigation system in Sandy Bluff Park was drawn down very low such that the irrigation pump would have been starved for water by the end of the summer. Public Works installed a 1″ water service and meter and connected it to the irrigation piping allowing us to supplement the irrigation system with potable water during dry summers. New engineered wood fiber was installed in the Fantasy Forest, Tupper Park, Bornstedt Park, Salmon Creek Park and Cascadia Village Park playgrounds.