Monthly Report – Public Works Department, November 2020

WATER – A total of 35,097,926 gallons of water were treated and delivered during September. 11,463,000 gallons from Alder Creek treatment plant, 8,380,800 gallons from Brownell Springs and 15,254,126 gallons purchased from City of Portland. Peak day production was 1.86 MGD on November 3rd. We had been having intermittent SCADA communications issues at Brownell Springs over the past year. Ziply installed new equipment on the phone service line which seems to have cured this issue. 11.58 inches of rainfall were recorded at the water treatment plant site during the month with a peak of 1.65 inches on November 13th. The smart meter conversion project was at 99% completion. There are approximately 38 meters remaining to be converted. These installations require plumbing or other piping changes that will be performed by City staff over the next two months. We had some trouble with our utility billing software processing new meter installations and customer changes which required manual entry of reads by Jayme for about 700-800 accounts each month. We expect our software vendor to have this remedied by the December billing cycle.

WASTEWATER – A total of 50,930,000 gallons of sewage were treated and re-used for irrigation or discharged to Tickle Creek. Maximum flow was 2.75 MGD on the 14th, rainfall on the 13th totaled 0.62 inches and rainfall on the 14th totaled 0,9 inches. Monthly rainfall recorded at the plant was 8.22 inches with a peak of 1.24 inches on the 6th. 354,070 gallons of sludge were dewatered and landfilled. Effluent BOD was 4.4 mg/l, permit allows: 10 mg/l. Effluent TSS was 4.7 mg/l, permit allows: 10 mg/l. With the exception of not meeting the 10:1 stream flow to effluent dilution ratio on one day (11/12) we complied with our wastewater discharge permit for November. Staff from the effluent filter manufacturer were on-site to perform some warranty work on the rebuild performed this summer. Repair and/or rebuild work also took place on the sludge belt press, the clarifier spray system and process water system.

STREETS – City staff began work on the demolition of existing, non-compliant ramps for the ADA ramp replacement project. The contractor will follow behind to prep, form =, pour and finish the new ramps. The City’s contract street sweeper spent 153 hours sweeping over 500 curb miles of streets while collecting 135 cubic yards (45 tons) of debris. The contractor on the LED streetlight conversion project began replacing the failing laminated wood poles in neighborhoods south of US 26 and west of OR-211. As of the end of November 828 lights or lights and poles out of 1,012 total had been replaced.

PARKS, BUILDINGS AND GROUNDS – We lost several trees along the east end of the Tickle Creek trail after the windstorm in November. Parks, Buildings and Ground and Public Works staff cleared the trail to open it for users. More extensive work will be required in the spring to chip up the debris to reduce fire danger. P, B and G staff installed holiday decorations on City buildings and at Centennial Plaza. Public Works staff felled, transported and installed the Christmas tree donated by Knapp Farms in Centennial Plaza.