Monthly Report Public Works Department September, 2020

WATER – A total of 45,859,591 gallons of water were treated and delivered during September. 20,270,000 gallons from Alder Creek treatment plant, 7,182,720 gallons from Brownell Springs and 18,406,871 gallons purchased from City of Portland. Peak day production was 3.35 MGD on September 10th. This is the historic peak day for our system. The planned PGE power shutdown in the Hoodland Corridor forced us to run the treatment plant and pump stations on generator power during the wildfire event. This also meant loss of SCADA communications which forced Veolia staff to run the plant and pump stations with only ‘snapshot’ views of the system which reduced production from these sources. The bulk of the peak day production consisted of about 2.5 MGD from City of Portland. We were very fortunate that we had this alternate source to satisfy water demand during the fires. 2.58 inches of rainfall were recorded at the water treatment plant site during the month with 1.06 inches on September 25th.

WASTEWATER – A total of 26,560,000 gallons of sewage were treated and re-used for irrigation. Maximum flow was 1.17 MGD on the 26th. Monthly rainfall recorded at the plant was 2.96 inches with a peak of 1.28 inches on the 24th. 640,510 gallons of sludge were dewatered and stored for future landfilling. We complied with our wastewater discharge permit for September. The work on the second effluent filter was delayed by air quality issues during the wildfires it should be completed in October. Veolia staff repaired several pumps at the plant site and sent one pump off for repairs.

STREETS – City staff continued painting parking stalls in City lots and stop bars at arterial and collector street intersections. The City’s contract street sweeper spent 81 hours sweeping 51 lane miles of streets while collecting 41 cubic yards of debris, most of it resulting from the windstorm in early September. Public Works staff spent about 120 hours picking up and disposing of debris from the windstorm. The contractor on the LED streetlight conversion project paused work during the poor air quality period following the wildfires.

PARKS, BUILDINGS AND GROUNDS – Parks, Buildings and Grounds staff spent time cleaning up storm damage and posting new signage once parks facilities were added to the list of venues that could be opened to the public. P,B&G staff also spent time cleaning up the grounds and removing sight-obscuring vegetation around the rental house in Bornstedt Park to make it more visible to the surrounding neighborhood. Work continued on repairing water damage and refinishing the floors in the rental house.

Monthly report – Public Works Department October, 2020


WATER – A total of 37,114,286 gallons of water were treated and delivered during October. 13,200,000 gallons from Alder Creek treatment plant, 8,660,160 gallons from Brownell Springs and 15,254,126 gallons purchased from City of Portland. Peak day production was 1.61 MGD on October 21st. 5.1 inches of rainfall were recorded at the water treatment plant site during the month with 1.54 inches on October 9th. The smart meter replacement project wrapped up in October and will be completed once backordered meters arrive. The October billing was the first using the AMR system and a few manual reads performed by City staff to collect all meter readings.

WASTEWATER – A total of 24,060,000 gallons of sewage were treated and re-used for irrigation. Maximum flow was 1.74 MGD on the 12th. Rainfall totaled 1.0 inches on October 11th. Monthly rainfall recorded at the plant was 3.15 inches with a peak of one inch on the 11th. 647,040 gallons of sludge were dewatered and stored for future landfilling. We had one exceedance of the total coliform limit on the effluent that was conveyed to the land application site for irrigation. The work on the effluent filters was completed but filter No. 1 lost a seal that will be replaced in November. Veolia staff prepared and tested the UV disinfection system for use during the winter discharge season. Several major components of the influent screening system were replaced or rebuilt in October. Transducers on four of the five collection system flow meters were replaced under the manufacturer’s warranty and they are more reliably and consistently reporting level and velocity data.

STREETS – The contractor resumed work on the LED streetlight conversion project in October. We applied liquid de-icer during the cold snap during the last week of October.

PARKS, BUILDINGS AND GROUNDS – Repair and restoration work was completed on the rental house at Bornstedt Park in preparation for renting it in November. About 1:00 PM on October 30th a neighbor observed a break-in at the house. A window was broken and a door jamb was damaged in an attempt to gain access. Sandy PD responded quickly and made contact with several juveniles in Bornstedt Park and identified a suspect. The property manager made arrangements for the repairs.