83 Ill. Adm. Code 600.140
Maps and Records
Section 600
Section 600.140 Maps and
Records
a) Each utility shall maintain reasonably accurate up-to-date
maps which shall show the area for which certificates of convenience and
necessity have been issued by the Commission. Where applicable, the maps shall
indicate each area by Docket Number.
b) Each utility shall also maintain reasonably accurate
up-to-date supply diagrams and distribution maps. The supply diagram shall
contain a plot plan of the supply facilities showing equipment, capacities, and
flow directions. The distribution map shall show all mains indicating their
general location and size, all hydrants and all valves. Such maps and other
such information as necessary shall enable the utility to promptly and
accurately advise interested individuals as to the location of mains and services.
c) Separate valve, hydrant and service connection records shall
be kept for each valve, hydrant and service connection. Each record shall give
the date of installation, size, make and model (if known), location, number and
history of maintenance where applicable.
d) Maps showing the certificated area of the utility (when the
Commission has issued a certificate for a specific area) and the principal
transmission and distribution mains shall be submitted to the Commission by
March 31, 1975. Maps showing additions and changes thereto in each calendar
year shall be submitted by March 31 of each succeeding year. If there are no
changes in such calendar year, the utility shall so notify the Commission in
writing of this fact and, in those cases, it will not be necessary to refile
such maps. Because of the necessity of such maps, any utility not possessing
same shall begin an immediate program to permit the preparation and filing
thereof. In the event such maps cannot be filed within the period above stated,
the utility shall request Commission approval for additional time.