Specifications include, but are not limited to: Demolition and removal or abandonment of approximately 915 linear feet of existing 8-inch sewer main. Demolition and removal of approximately 210 linear feet of existing 8-inch sewer main within an existing 30-inch steel casing pipe located beneath Inter state 184. Demolition and removal of three (3) existing manholes. Demolition and removal of the existing flow monitoring manhole with Palmer Bowlus Flume. Demolition and removal of the existing flow diversion manhole. Construction consists of the following: Construction of approximately 800 linear feet of 12-inch gravity sewer main via direct bury trench. Construction of approximately 210 linear feet of 12-inch gravity sewer main within the existing 30-inch steel casing pipe located beneath Interstate 184, and con struction of approximately 70 linear feet of 12-inch gravity sewer main within an existing 24-inch casing pipe located beneath the Brose Irrigation Lateral. Construction of eight (8) precast concrete manholes. Connection to and modification of one (1) existing manhole con crete trough to accommodate flows for the new 12-inch gravity sewer main. Construction of a new flow monitoring manhole with 12-inch Palm er-Bowlus Flume. Relocation of the existing ISCO level sensor and reconnection of the level transmitter field cable and sampler tube to the existing ISCO equipment. Construction of a new concrete diversion manhole. Surface restoration of all disturbed surfaces. Incidentals necessary to complete the work.