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Career Online High School

LEED Certified Libraries of the County of Los Angeles Public Library

Sustainability and the Library

The County of Los Angeles is committed to greener spaces and environment. Explore each section to learn about the sustainable practices incorporated in our library buildings. In January 2007, the Los Angeles County Board of Supervisors adopted rules to require that all new County buildings greater than 10,000 square feet and funded on or after February 15, 2007 be certified LEED Silver, Gold or Platinum.

What is LEED Certification?

LEED logo

LEED certification is the recognized standard for measuring building sustainability. Achieving LEED certification demonstrates the building project as truly “green.” The LEED rating system, administered by the U.S. Green Building Council, is designed to promote design and construction practices that reduce the building’s negative environmental impacts. LEED certification, which includes a rigorous third-party commissioning process, offers four certification levels for new construction and major renovation projects – Certified, Silver, Gold, and Platinum – that correspond to the number of credits accrued in five categories: sustainable sites, water efficiency, energy and atmosphere, materials and resources, and indoor environmental quality. Learn more about the LEED rating system on the U.S. Green Building Council website.

Quartz Hill Library LEED Gold

LEED Gold Badge Quartz Hill Library

Sustainable Sites

Drought resistant native and or adapted vegetation was implemented around the library and parking lot to provide shading of parking spaces and building exterior while helping attenuate stormwater runoff quantities during heavy precipitation events. Over 50% of the project site area contained vegetated open space. The library design included a white reflective cool roof and shading from roof-mounted solar PV panels to reduce the solar heat gain into the building. The parking lot contained preferred parking for low emitting fuel efficient vehicles (LEFEVs).

Water Efficiency

Indoor potable water savings was estimated to be 45% using low flush urinals, water closets, and sensor operated lavatory faucets.   Low flow drip irrigation was implemented throughout the landscaping to reduce the potable water demand by over 64% when compared to the baseline water demand. Almost 305,000 gallons of non-potable reclaimed water was used during construction for dust control, compaction, and wash water. This non-potable water avoided over 1,800 kilograms of carbon dioxide equivalent greenhouse gas emissions if potable water would have been used during construction.

Energy & Atmosphere

The digitally controlled climate-responsive air conditioning system was designed to be at least 15% better than Title 24 energy codes.  The air conditioned system is programmed to adjust to rapid changes in occupant loads or daily weather conditions. A 30 kW DC rooftop mounted Solar PV system was utilized to offset almost 20% of the total estimated annual energy consumption of the building. 

Materials & Resources

A comprehensive construction and demolition waste management plan was implemented that resulted in a landfill diversion rate of over 75% by weight.  An estimated 280 tons of demolished and milled paving around the library was removed by a local landowner that used it for dust control and vehicle access instead of this material being hauled to an offsite crushing and reuse facility. Over 30% of the construction materials on a LEED cost basis was locally extracted and manufactured.

Indoor Environmental Quality

A major goal in this library was to limit or eliminate harmful emissions of pollutants during and after construction by installing low emitting floorings, ceilings and finishes, sealing of all air conditioning openings during construction, and flushing all occupied spaces with 14,000 cubic foot of fresh filtered outside air per square foot before library occupancy. 

Innovation & Design

Innovative ideas included using the non-potable water for construction, and the use of light emitting diode (LED) lighting throughout the inside and outside the library including parking lot lighting.  The LED lighting not only reduces electricity demand but also contains no mercury. LEDs also last substantially longer than other common lighting methods reducing the labor demand for lamp replacement.

LEED Libraries

Read more about the library's other LEED Buildings.