In 2006 Harford Community College will submit the
Joppa Hall project to the United States Green Building Council (USGBC) for Leadership in Energy and Environmental Design (LEED®) certification. The process of getting LEED® certified involves close examination of the project in the following areas:
- Sustainability of the building site
- Water efficiency
- Energy and atmosphere
- Materials and resources used
- Indoor environmental quality
Built in 1965 as a vocational-technical high school, Joppa Hall was turned over to the College in 1981. Despite many alterations the space had become inefficient and undersized. The 2004-2005 renovation/expansion project involved a total replacement of the building infrastructure systems, the renovation of all interior academic spaces, and the addition of 14,000 GSF (gross square feet) of new space. Joppa Hall now contains the visual and performing arts programs, the College’s public radio station (WHFC-FM), the computer & information technology programs, and many of the College’s community education programs.
The original footprint of the building was in the shape of an open square with a central inner courtyard. The courtyard was retained and improved and a café was added facing the courtyard on the south side. The 8,000 GSF addition to the east side of Joppa Hall accommodates the new Building Preservation & Restoration program, and the 6,000 GSF addition to the south side features music classrooms and recital space. Both additions and the new entrance have green roofs. The new footprint and exterior enhancements help blend the architecture of the old high school with that of the other College buildings.
• Three green roofs plus a demonstration roof at the main entrance
• High efficiency HVAC with controls that optimize air output with heat load
• High efficiency lighting with motion sensor controls
• High performance window glazing to minimize heat transfer
• 30% savings in energy costs
• Cistern that collects rainwater for makeup water to HVAC cooling tower
• Waterless urinals and dual flush commodes
• Bio-retention pond that improves quality of stormwater runoff
• Recycled materials throughout the building
• Use of Lyptus® wood (rapidly renewable plant) throughout building
• 75% construction waste recycling
• During construction, erosion issues were effectively addressed to reduce negative impacts on water and air quality and to prevent loss of soils and sediment.
• A storm water management system containing a pretreatment area (bio-retention pond) was installed to remove suspended solids and pollutants from the building and parking lot runoff.
• Three green (vegetated) roofs plus a demonstration roof at the main entrance were installed to reduce rainwater runoff.
• Land around Joppa Hall was restored with native vegetation and will remain undeveloped.
• Cut-off parking lot light fixtures were installed to reduce nighttime light pollution.
• Secure bike storage (bike lockers) and changing/shower facilities were provided to encourage alternative transportation (bicycling).
• Carpooling efforts will be supported through designated parking spaces.
• Public bus lines were and will remain in close range of Joppa.
• Native landscaping (trees and shrubs) were planted to reduce the need for irrigation.
• A 20,000 gallon cistern was installed to collect rainwater from the non-green roofs; the water is used to make up evaporative loss from the water-cooled cooling tower.
• Waterless urinals were installed throughout building, as well as some demonstration dual-flush commodes.
• High-efficiency faucets and showerheads were installed to conserve water.
Energy and Atmosphere
• High efficiency HVAC was installed, including a variable air volume (VAV) air distribution system, air handlers and a centrifugal chiller with variable frequency drives (VFDs), a water-cooled cooling tower, and a high performance natural gas furnace.
• High efficiency lighting was installed with motion sensors in most classrooms to turn off lights when the room is not in use.
• Highest efficiency window glazing was installed to reduce cooling costs in the summer months.
• The building is undergoing fundamental systems commissioning to ensure that the components and systems are designed, installed, and calibrated to operate as designed.
• Energy modeling of the building indicates that it will realize a 30% energy savings above the American Society for Heating, Refrigeration, & Air Conditioning (ASHRA) standard.
Materials and Resources
• During construction, 75% of the construction waste was recycled rather than land filled.
• A maximum amount of the building shell was reused during renovation.
• A minimum of 25% of the materials installed contain recycled content; for example, bathroom partitions are made from recycled milk cartons, and ceiling tiles have high recycled content.
• Wood used in Joppa Hall came from certified sustainably harvested forests.
• Lyptus®, a finished wood product used throughout Joppa Hall, is a rapidly renewable product.
• At least 20% of the materials used in the renovation/expansion were locally manufactured.
• The finished building now contains a designated storage/collection area for recyclable materials.
Indoor Environmental Quality
• Healthy indoor air quality (particulates, humidity, chemical vapors) was carefully maintained during construction to minimize dust and hazards.
• Low VOC products (paints, adhesives, sealants) were used to ensure a healthy indoor air quality for building occupants.
• Carpets and wood products meet high environmental quality standards (low chemical usage).
The concept of a rooftop garden or extensive planting directly on the rooftop is centuries old. Recent technological advances, however, have made the process more efficient and cost effective. In Europe there is a greater than 30-year history of success with green or vegetative roofs.
• Prolongs the life of the underlying roof membrane
• Reduces and purifies stormwater runoff
• Insulates the building in winter and summer and moderates temperature
• Is visually appealing and enhances the aesthetic value of the urban open space
The existing or new roof is evaluated to determine if it can structurally bear the weight of a green roof and the following layers are applied:
• A waterproofing membrane
• A drainage layer
• A filter mat allows water to soak through but prevents erosion
• Lightweight growth media of 4 to 6 inches that provides plant support and nutrients
• Specially chosen plants such as drought resistant sedum in a variety of colors
Harford Community College is the primary resource for higher education in Harford County, also serving as the center for recreation, wellness and the cultural arts. The College, founded in 1957, is located on 332 acres and occupies 21 buildings. The College maintains a campus conducive to excellence in learning and teaching by providing transfer, career, developmental and continuing education programs to challenge and support students who can benefit from its programs and services.
Harford Community College has a greater than ten-year history of making sound environmental choices in its programs, operations and services. The College’s sustainability activities are supported by its mission to be accountable for the efficient and effective use of resources, and to prepare and to sustain an educated workforce. Students, employees and members of the community have demonstrated high levels of commitment to the greening of campus in areas such as recycling, green design, energy efficiency, light pollution reduction, native plantings, bioretention ponds, rescuing trees, and Earth Day activities.
At Harford Community College we have excellent instructors whose emphasis is on teaching. Class sizes are small, scheduled at times convenient to students, and include a growing number of on-line classes. The College offers advising, financial aid, tutoring, athletics and more. Campus buildings include classrooms and labs, an all-inclusive student center with café, art gallery, bookstore, fitness and recreation facilities, two theaters, an observatory, and a fully-automated library with on-line catalog. The College Life and Wellness Office offers stress management seminars, fitness maintenance classes and clubs and organizations that broaden what is learned in the classroom.
Harford Community College offers associate degree programs, as well as certificate programs, and provides training in skills that are specific to occupations such as accounting, interior decorating, computer information systems, allied health, and more. The College also offers career programs and teaches state-of-the-art business and industry skills. There’s something for everyone at Harford Community College.
The College publicly declares its commitment to environmental stewardship through the following:
• Registration of new building construction with US Green Building Council: Joppa Hall and Bel Air Hall
• Green features in other campus renovations include extensive use of daylighting, geothermal wells, waterless urinals, and stormwater collection systems.
• Recycling bins for paper, cans, bottles, batteries
• Recycling on campus of fluorescent lights, computers, yard waste
• Nike Reuse-a-Shoe Project
• Stormwater Gardens
• Butterfly Garden
• President's Nursery
• Waterless Urinals
• Credit and noncredit courses and programs in environmental science and technology, agriculture, and other related fields
• Environmental exchange programs in Denmark and Germany
• Wellness activities such as the walking initiative for employees and students
• Earth Day activities
• Annual 5K Eco-Run and Nature Hike
• Green Theme lectures
• Chesapeake Bay Minutes runs twice a day on the College’s public radio station, WHFC-FM; the feature, written and produced by College employees, educates listeners in the Chesapeake Bay watershed about how their actions can contribute to improving the health of the Bay.
• Theatre publications and other brochures produced by the College regularly feature environmental messages aimed at increasing environmental literacy.
• Publications utilize recycled content papers and vegetable-based soy inks when possible.
• Geothermal Wells
• Solar Hot Water Heater
• Energy Efficiency and Lighting Assessment
• Energy Conservation: Vending Machine Efficiencies
The College has membership in and is actively involved in many organizations that demonstrate commitment to campus greening initiatives: US Green Building Council, National Wildlife Federation, Campus Ecology Program, SCUP: The Society for College and University Planning, University Leaders for a Sustainable Future and the Tallories Declaration. The Tallories Declaration is an official, international statement made by more than 300 university administrators of commitment to environmental sustainability. Harford Community College became a signatory in April 2003.
November 2003—Harford receives the esteemed Certificate of Recognition for Exceptional Campus Greening Achievements from National Wildlife Federation. Harford was one of 13 colleges nationwide, and the only community college, that received this recognition for the 2002/2003 academic year.
April 2004—The College receives a Silver PLANT Award from Maryland Department of National Resources for its reforestation efforts.
“The Green Touchscreen™ kiosk installed in the building monitors the current and historical electricity, water and natural gas usage, allowing the building to inform students, faculty and visitors of the amounts of each being used. This data can then be used to determine the amounts being saved. By comparing the amount of grey (reused) water to the amount of city water in use, the kiosk allows building managers to assess the effects of the water reuse system” stated Wacha.
The Joppa Hall air conditioning system that the cistern system provides cooling water for was designed to be one of the most energy-efficient models available at the time of construction. The system utilizes a 330-ton centrifugal chiller connected to an evaporative cooling tower. The sole purpose of the cooling tower is to remove heat captured from within the building. The process of evaporating water to remove heat is one of the most energy-efficient methods used today.
Heat is released from the cooling tower through the process of evaporation. As heated water from the building is sent to the cooling tower, large fans force air through the water as it cascades down through an elaborate baffle system. Evaporation takes place, cooling the water and then sending it back into the building to repeat the cycle. During the hot summer months, large quantities of water are lost due to this evaporation process and must be replaced.
Under normal conditions, this water would be replaced by a public water system with no negative impacts to the supply. However, Harford Community College obtains all of its drinking water through wells located on the College property. As long as the 20,000-gallon storage tank contains water, it becomes the primary source of water for the cooling tower. If the storage tank is below a minimum level, an automated control system switches the storage tank supply over to the well system.
Minimizing the use of drinking water obtained from the campus well system is a primary objective of the overall system. An energy management system oversees the process of selecting which water source to use. This system provides computer display screens monitored by facilities personnel. Some of the information shown on these screens includes how much water is in the tank at any given time and whether the storage system is activated. Water meters have been installed to record the amount of rainwater the system is providing.
Dynamic Energy Electricty Usage Animated 2D Graph of Control System Data.
Dynamic Energy Gas Usage Animated 2D Graph of Control System Data.