MAIN WASTEWATER TREATMENT PLANT GRIT DEWATERING EQUIPMENT REPLACEMENT AND REACTOR DRAIN IMPROVEMENTS

Major work scope includes the following: replacement of four grit dewatering classifiers, a grit
hopper, lighting at the Grit Dewatering Building (Grit DWB), four reactor drain pumps, a reactor
aerator at the Reactors; improvements to the grit dewatering loading area, Reactor gallery drains,
reactor drain suction header, piping at the Aerated Grit Tanks; rehabilitation of Grit DWB
structure; addition of a washdown diversion structure at the Fats, Oils, Grease (FOG) Receiving
Station, flush line from Blend Tanks, sumps at Reactor Gallery, flush connections at the Primary
Sedimentation Gallery, east loading provisions, and classifier ventilation header at the Grit
DWB, flowmeters, and pressure gauges at various locations.

This project will require multiple trades and disciplines; included but not limited to; surveying, demolition, saw-cutting,
hazardous materials handling, grading, excavation, shoring, fill, concrete, rebar, grouting,
waterproofing, roof hatches, joint sealants, painting, industrial coatings, structural steel, bolting, welding, steel decking, metal fabrications, FRP,
mechanical, electrical, pipeline, plumbing, process integration, signage, processing and handling equipment, grit dewatering classifier systems,
earthwork, excavation, dewatering, surface restoration, utilities, fencing, paving, and other required work and trades.

Major civil work includes, but is not limited to, the installation of buried piping, working around
and protection of existing buried utilities, site improvements, manhole connections, and catch
basin installation. Major structural work includes, but is not limited to, modifications to existing
structural concrete and steel structures, rehabilitation of roof decking, installation of new canopy
structure, replacement of roof hatch, installation of and modifications to walkways and
guardrails, installation of and modifications to existing pipe and equipment support.
Major mechanical work includes, but is not limited to, replacement or new installations of
mechanical equipment described above, pipes, valves, actuators, slide gates, pressure gauges,
flowmeters, and safety guards. Major electrical work includes, but is not limited to, removal and
installation of motors, electrical conduits, duct banks, light fixtures, starters, disconnect switches,
control panels, process instruments, and modifications to controls.

Project will require recoating of piping, structural members, roof decking, equipment containing
hazardous materials and proper disposal of hazardous materials. This project will also include
cleaning and preparing an existing FOG tank for inspection and repair as needed. Contractor will
be required to prepare safety plans associated with, but not limited to, working at high elevations,
confined and foul air spaces, buried places, and hot work. Deadlines and milestones set in the
project requirements may have regulatory impacts. Significant coordination with the District is
required for successful completion of the work in this project. Detailed project requirements are
described in Specification Section 01 35 13, Special Project Procedures.

EBMUD Contract Equity Program is in effect on this project. District contracting objectives are: Construction 25% White Men; 9% White Women, 25% Ethnic Minorities (Men and Women).

All work covered by the contract shall be completed within seven hundred and twenty (720)
calendar days after the issuance of the Notice to Proceed.