Second High Reservoir Maintenance and Improvements

The Washington Aqueduct provides potable water to approximately one million people in the District of Columbia and Northern Virginia. As part of the water treatment and supply system, the Washington Aqueduct maintains and operates the Dalecarlia and McMillan Water Treatment Plants (WTPs). Potable water from these WTPs is pumped via the second high service to the Second High Reservoir. This reservoir is an approximate 419 LF x 294 LF subsurface structure that is 24 feet deep that was built in 1931. It has a capacity of 15 MG and is located at the intersection of Van Ness Street and 44th Street, NW, Washington. DC. The project consists of implementing upgrades and improvements to the Second High Reservoir to address operational and sanitary survey issues previously identified. This will result in improved water quality and operation within the distribution system. The work includes the replacement of a brick Sample Building; the replacement of the 24” drain line; installation of mechanical mixers; sealing of all interior joints and cracks; installation of a spread spectrum radio communications antenna; installation of a roof sub-drainage system and the replacement of the perimeter fence. This reservoir is a critical component of the distribution system and so the reservoir outage period is restricted. An experienced contractor with resources and expertise to handle the following project constraints is needed: The reservoir roof surface has limited weight restrictions and can only be taken out of service for three (3) months. All work needing to be performed inside the reservoir has to be completed within that time frame. The demolition and re-building of brick Sample Building must be done within the limited outage window while the reservoir is out of service. Access into the reservoir structure is limited and all work therein is considered confined space work. The reservoir is located in a residential neighborhood and so noise ordinance requirements must be strictly adhered to. The existing security server and associated equipment is to be removed and re-installed by a professional security contractor.

Division 02 -	Existing Conditions, Geotechnical Investigations, Subsurface Drilling and Sampling.
Division 03 -	Concrete, Concrete Reinforcing, Cast-in-Place Concrete, Precast Concrete.
Division 04 -	Masonry, Unit Masonry.
Division 05 -	Metals, Structural Metal Framing.
Division 06 -	Wood, Plastics, and Composites, Rough Carpentry.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection, Weather Barriers.
Division 08 -	Openings, Doors and Frames, Windows, Hardware, Glazing.
Division 09 -	Finishes, Flooring, Painting and Coating.
Division 10 -	Specialties, Signage, Safety Specialties, Lockers, Flagpoles.
Division 11 -	Equipment, Laboratory Equipment.
Division 12 -	Furnishings.
Division 13 -	Special Construction.
Division 14 -	Conveying Equipment, Lifts.
Division 21 -	Fire Suppression, Fire-Extinguishing Systems.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Air Terminal Units.
Division 26 -	Electrical, Instrumentation and Control for Electrical Systems, Power Distribution Units, Lighting, Interior Lighting, Emergency Lighting, Exterior Lighting.
Division 27 -	Communications, Data Communications, Audio-Video Communications.
Division 28 -	Electronic Safety and Security, Electronic Access Control and Intrusion Detection, Video Surveillance, Fire Detection and Alarm.
Division 31 -	Earthwork, Site Clearing, Grading, Earthwork Methods.
Division 32 -	Exterior Improvements, Flexible Paving, Curbs, Gutters, Sidewalks, and Driveways, Fences and Gates, Irrigation, Planting, Turf and Grasses.
Division 33 -	Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks, Wastewater Utility Pumping Stations, Storm Drainage Utilities, Electrical Utilities, Communications Utilities.
Division 40 -	Process Integration, Water Process Piping, Instrumentation and Control for Process Systems.
Division 41 -	Material Processing and Handling Equipment, Bulk Material Processing Equipment, Bulk Material Conveying Equipment, Bulk Material Feeders, Conveyors, Cranes and Hoists.
Division 44 -	Pollution and Waste Control Equipment, Odor Treatment Equipment, Water Pollution Control Equipment, Water Pollution Containment and Cleanup Equipment.
Division 46 -	Water and Wastewater Equipment, Common Work Results for Water and Wastewater Equipment, Water and Wastewater Preliminary Treatment Equipment, Water and Wastewater Chemical Feed Equipment, Water and Wastewater Clarification and Mixing Equipment, Water and Wastewater Secondary Treatment Equipment, Water and Wastewater Advanced Treatment Equipment, Water and Wastewater Residuals Handling and Treatment.