AGENCY: Salt Lake City (Utah). Water Supply and Waterworks
SERIES: 3953
TITLE: Daily filter log
DATES: 1961-2015.
ARRANGEMENT: Chronological
DESCRIPTION: This log consists of daily instrument table information regarding water filter operations. It is used to monitor the performance of filters to determine water quality. The log includes date, filter number, hour of occurrence, type of occurrence such as loss of head (filter becoming clogged), backwash water, rate of flow, if filter is draining, and total water used. The log also shows the average loss of head, number of filters in operation and number washed, average filter run, shift totals, and total plant flow.
RETENTION
DISPOSITION
RETENTION AND DISPOSITION AUTHORIZATION
These records are in Archives' permanent custody.
APPROVED: 06/1990
FORMAT MANAGEMENT
Paper: Retain in Office for 10 years and then destroy.
APPRAISAL
Administrative
This disposition is based on the record's primary evidential value to the agency to determine filter requirements. It is required under the provisions of the Utah Clean Water Act (UCA 26-12-11 (1989)) and local ordinances.