It is the goal of the Department of General Services that state-owned buildings be models of energy efficiency and utilize cost-effective sustainable building design measures and technologies.
ENERGY EFFICIENCY
It is intended that the project shall be designed, constructed, and equipped to exceed the minimum building energy-efficiency standards mandated by Title 24 of the California Code of Regulations by 30%. The concept design basis utilizes the following energy efficiency measures:
Architectural Systems:
The use of DOE-2 energy use model to maximize energy efficiency accounting.
Use of high efficiency glazing to reduce cooling loads.
The two-story arcades provide shading at the lower level to reduce heat loads.
Open workstations are planned at the perimeters to maximize day light utilization.
Use of foundation system that will limit the use of pumps to relieve hydrostatic ground water pressure.
Mechanical Systems:
Use of high efficiency motors.
Use of pumps and fans equipped with electronic, adjustable frequency drives for maximum energy utilization.
Use demand controlled (carbon monoxide sensors) garage exhaust systems to reduce fan motor run time.
Use demand modulated (carbon dioxide sensors) outdoor air supply dampers.
Plumbing Systems:
Centralized domestic drinking water and water heating systems to eliminate multiple, small, reduced life refrigeration and heating units.
Electrical Systems:
The use of energy efficient T-8 fluorescent lamps. Automated lighting controls include dimming, motion/occupancy sensors, daylight sensors, time of day control, and photocell control for exterior lighting.
Interior Office Spaces Access to Natural Daytime Lighting:
Integrate daylight and full-spectrum artificial light to maximize natural light and minimize glare.
Use high performance glass and high ceilings to maximize the penetration of natural light. Limit the placement of private offices and other enclosed spaces from the perimeter of the buildings.
Use day light and occupant control sensors.
Use light colors in interiors to increase daylight reflectivity.
SUSTAINABLE BUILDING STANDARDS, MEASURES, AND PERFORMANCE CRITERIA
Water Conservation Measures in Interior and Exterior Plumbing and Landscaping
Use low water consumption plumbing fixtures and flow restrictors to reduce water consumption and sewage discharge.
Continue coordination with the City of Sacramento Department of Utilities to mitigate sewage flows and define storm flow detention and metering.
Incorporate drought tolerant plant materials where indicated.
Use re-circulation or heat tape minimize wait times for hot water.
Use higher technology condenser water treatment systems such as ozone, UV, sand filtration, ionization and the like to reduce or eliminate cooling tower "bleed."
Use water conserving and plant type segregated irrigation systems. Use low-flow heads, i.e., sensors, geoflow sensors, computerized evapotrans controllers, moisture sensors, and wind sensors to improve efficiency of irrigation systems.
Use environmentally friendly water treatment products and/or reduce the use of chemicals in condenser water treatment systems to reduce airborne and waterborne pollutants.
Use predominantly steam-fired chilled water equipment to reduce the use of fluorocarbon refrigerants. No combustion byproducts are associated with the HVAC system by using off-site generated steam.
Disposition, Recycling, or Limitation of Construction and Demolition Waste
Goal for demolition materials recovery is 75%.
Goal for recovery of new construction waste is 75%.
Utilization of Building Materials That Contain Recycled Materials (including, but not limited to, recycled and recovered construction and demolition waste and recyclable carpets)
Recycled content goals are as follows:
Structural steel
60%
Reinforced concrete
25%
Pre-cast concrete
25%
Glass
10%
Asphalt concrete pavement
50%
Drywall
30%
Acoustic tile
85%
Toilet partitions
10%
Telecommunications cabling
20%
Plastic wall plates
20%
Irrigation materials
20%
Metal signs
50%
Work stations components
40%
Use modular, prefabricated or pre-assembled systems to minimize construction waste.
30,000 square feet of gray marble recovered from the historic Library and Courts Building is to be used in the ground floor lobbies.
Storage and Collection of Recyclable Materials Used by Building Occupants
Space plans include recycling rooms at each floor with compaction facilities in each loading dock area.
Occupants to consult with the California Integrated Waste Management Board to formulate and implement a recycling plan.
INDOOR AIR QUALITY
A commissioning sequence will be required to off-gas and purge the building to reduce VOCs.
Regulate outdoor air on the basis of space carbon dioxide levels with continuous monitoring via the Facility Management and Control System. The levels to be automatically adjusted to maximize the benefit of fresh air while minimizing energy consumption.
The building fan systems shall run continuously during occupancy with limited close-off terminal units to assure introduction of minimum levels of outdoor air.
The supply air systems shall employ high efficiency filtration to control particulates in the air stream.
Excess capacity in the mechanical system to allow for the future increases in the volume of outdoor air beyond the minimum values in ASHRAE Standard 62/1989.
Use finishes with low or zero volatile organic compounds (VOCs) where possible.
ALTERNATE ENERGY STRATEGIES
Use photovoltaic panels to shade cars on the parking structure roof and provide additional electrical capacity at both garages on Blocks 224 and 173. Additionally, photovoltaic panels will be utilized on the mechanical penthouse of the Block 225 office building.
Provide recharging stations for electric vehicles.
Provide preferred parking spaces for alternative fueled vehicles and car pool vehicles.
Provide secure bicycle lockers and shower-locker facilities.
