Monthly Report September 2014 – Public Works Department

WATER – A total of 41,974,088 gallons of water were delivered, 15,945,000 gallons at Alder Creek treatment plant, 9,980,000 at Brownell Springs and 16,049,088 purchased from City of Portland. 1.37 inches of rainfall were recorded at the treatment plant site during September. The fish passage improvements constructed by the Portland Water Bureau at our intake on Alder Creek were completed in September. During the warm and dry weather we were still able to maintain water production at the treatment plant during construction. City staff also took advantage of the opportunity to make some repairs to the intake structure while the stream was dewatered.

Alder Creek Dam 9-29-30 025 (1024x683)

WASTEWATER – A total of 26,700,000 gallons of sewage were treated and re-used for irrigation purposes. Minimum flow was 0.81 MGD on the 4th. Maximum flow was 1.05 MGD on the 24th, (rainfall was 0.15 inches on the 23rd and 0.35 inches on the 24th). A total of one-half inch of rainfall was recorded during September.  BOD concentration was 6.4 mg/l; BOD loading was 59.8 lbs.; permit allows 10 mg/l and 125 lbs.; SS concentration was 3.7  mg/l; SS loading was 31.5 lbs.; permit allows 10 mg/l and 125 lbs. Effluent BOD and SS permit limits do not apply when the treated wastewater is used for irrigation – these figures are shown to demonstrate treatment efficiency.   1,135,250 gallons of sludge (80.25 dry tons) were processed during the month. 1,125,000 gallons of sludge (71.25 dry tons) were hauled and spread on local pasture land as fertilizer. The pumps at Marcy St.; Northside, Southside, Southeast, Southwest and Meinig Ave. lift stations ran a total of 203 hours. Revisions to the backup level controls at Meinig Ave. pump station were made to improve reliability. 

STREETS – The street sweeping contractor spent 59.5 hours sweeping streets and collected more than 23 tons (32 cu. yds.) of debris, covering 178 lane milesThe final lane striping on Dubarko and Meinig was completed in September.

PARKS / OTHER –  Bornstedt Park continues to be popular even after school has resumed. Over 297,000 gallons of water were used for park irrigation and the splash pad during September. City crews removed sediment and debris from underground detention structures in Meinig Park and the Deer Point subdivision while water levels were low and prior to Fall rains.