Monthly Report – Public Works Department, July 2012

WATER

A total of 41,670,500 gallons of water were produced, 29,728,000 at Alder Creek Treatment Plant and 11,942,500 at Brownell Springs. Peak day production was 1.73 MGD on July 25th. A total of 0.59 inches of rainfall was recorded at the treatment plant site during the month of July. City staff continued replacing water service lines on streets that are to be repaved this summer. design work continued on the Portland Water Bureau Intertie Project, 50% design plans were submitted for review.

 SEWER

A total of 25,750,000 gallons of wastewater were treated. Minimum flow was 0.68 MGD on the 21st; maximum day flow was 0.99 MGD on the 1st (0.35” rainfall on June 30th). A total of 0.2” of rainfall was recorded at the treatment plant site during the month.  We were in compliance with our waste discharge permit for the month of July. BOD concentration was 7.9 mg/l, permit allows 20 mg/l; BOD loading was 45 lbs., permit allows 83 lbs.; SS concentration was 6.4 mg/l, permit allows 20 mg/l; SS loading was 45 lbs., permit allows 83 lbs. Effluent BOD and SS permit limits do not apply when treated wastewater is used for irrigation, these numbers are shown to demonstrate treatment efficiency. One of the clarifiers was drained for inspection and cleaning.  604,010 gallons of sludge were processed during the month reduced to 51.71 dry tons of ‘cake’ which was hauled and spread on local, DEQ-approved pasture sites. The pumps at Marcy St., Meinig Ave. Sleep Hollow and Northside lift stations ran a total of 282 hours with no significant problems.

 STREETS

 A total of 12 tons of asphalt were used patching potholes and utility trenches. The street sweeping contractor spent 45 hours sweeping streets, collected 19 tons (16 cu. yds.) of debris, and covered 127 lane miles. A few stragglers were added to the voluntary sidewalk repair program.

PARKS – OTHER

Meinig Park held up fairly well after the Mountain Festival. The new parking lot lighting and overflow parking area were also useful during the event. Parks staff chpped up debris on the Tickle Creek trail and removed weeds and laced bark mulch on the connector path in the Barlow Ridge subdivision.