(A) A preventive maintenance program shall be instituted for the proper maintenance and operation of the municipal sewerage system in order to ensure a proper and satisfactory state of repair and performance level of the system at all times. The City Engineer is authorized and directed to formulate and institute the required program to carry out the intent of this section.
(B) The preventive maintenance program should establish procedures for the periodic inspection and cleaning of the municipal sewerage system and necessary repairs thereof. The program shall incorporate the following items and other items as determined by the City Engineer:
(1) Visual inspections of all manholes and other structures and the like;
(2) Visual inspections of sewer lines as can be determined from inside manholes or structures by the naked eye, by mirrors or by other methods;
(3) Prevention of the entry of surface runoff into manholes or other structures;
(4) Smoke testing to determine sources of entry of extraneous flows through cross-connections of storm drains and other illegal connections;
(5) Television inspections to determine state of repair, performance level, illegal connections and the like;
(6) Flow measurements to determine wet and dry weather flow by visual inspection, weirs, flow gauges, electronic recorders and the like;
(7) Periodic inspections of lift stations, the serviceability of standby power ascertained and the keeping of flow records;
(8) Where it is determined that, based on the population equivalent being served, excessive amounts of flows are received, a determination of the source of the flows and the elimination of extraneous flows.
(C) An overall map of the municipal sanitary sewerage system, on a base map showing street and lot beyond, shall be prepared. The map shall consist of one or more sheets and shall be updated periodically. The map shall show the following details:
(1) Sanitary sewer manholes, structures and lift stations, if any;
(2) The size, length and direction of flows and materials of all sanitary sewer lines;
(3) Rim and invert elevations, referred to U.S.G.S. datum, and slopes of sewer runs;
(4) Flood hazard areas, based on U.S.G.S. maps;
(5) Approximate locations of house connections;
(6) Street drainage patterns and general physical features; and
(7) Storm sewer lines, manholes, inlets and other structures and drainage features (streams, drainage ditches and the like).
(2000 Code, § 13.08.570)