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.