May 15-June 10, 2020 Operations Report
/Kevin Southworth, Operations Manager
During this period:
Completed Dept. of Ecology water treatment discharge permit, including site plan, treatment plant schematic, and related documents.
Completed Dept. of Health Water Use Efficiency report. Annual leakage in distribution is 35.7% which equates to consistent 3.6 gallons per minute. (May 2020 average leak rate was 3.1 gpm.) LISE has exceeded its long term goal reducing peak summer use by 5%. Water use in June to August decreased by 7.5% since 2014 when considering the increase in population.
Launched new small docks and dock bridge.
LISE truck reverse gear failed and required transmission replacement.
Since May 13 we have been filtering water well below turbidity violation level. We will likely incur a violation for the month of May due to turbidity problems in the beginning of the month. Raw water turbidity is slowing increasing and we are in process on the following items to control turbidity issues:
Filter-to-waste upgrade is in progress.
Plant shutdown controls to be installed in the last half of June.
New coagulant option based on lab sampling of our raw water by the coagulant manufacturer.
Possible algae treatment in reservoirs.
May 2020 Water Usage (in gallons)
From storage tanks 487,870 Chlorine monitoring feed (0.178 gpm) 7,950
Net to distribution 479,920
Flushing 2,700 Residential meters 337,270 Unaccounted for water 139,950
Percentage of loss 29%
