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Duffield
Associates has been a leader in innovative and sustainable site
design, storm and wastewater management, and conservation since
our inception more than 30 years ago. Our areas of expertise include
the following LEED (Green Building Rating System) activities:
- Construction Activity Pollution Prevention - erosion and sedimentation
control plans including NPDES program compliance
- Site Selection - smart-growth site analysis that considers floodplains,
wetlands, endangered species, and riparian buffers
- Development Density & Community Connectivity - condition
assessments of existing buildings, including IEQ evaluation
- Brownfield Redevelopment - environmental analysis, site characterization,
remedial design and implementation, and environmental indemnification
and grant funding
- Alternative Transportation - minimization of parking (and impervious
area) through use analysis, ordinance review, and coordination
with municipalities
- Site Development - habitat restoration (wetland delineation,
existing vegetation inventories, stream and lake restoration,
riparian buffer rehabilitation) and open space maximization (natural
resource preservation and protection, wetland mitigation and pond
design)
- Stormwater Design - quantity and quality engineering using best
management practices including bioretention areas, bio-swales,
infiltration systems, porous pavement, ponds, pollutant source
control, and TMDL/NPDES compliance
- Heat Island Effect - reductions through parking design, land-
scaping design, and incorporating green roofs into stormwater
management
- Water Efficient Landscaping - native species plant selection
for minimal water usage, capture and reuse of stormwater and gray
water for irrigation
- Innovative Wastewater Technologies - drip/spray system and Rapid
Infiltration Basin (RIB) modeling, design, construction and management,
design of gray water irrigation systems
- On-site Renewable Energy - design of geothermal heating/cooling
systems, engineering support for wind and solar power systems
- Materials Reuse and Recycled Content - maximize use of recycled
materials (e.g. fly ash, recycled concrete) and promote recycling
rather than disposal
- Construction Waste Management - plan, review, manage (separation)
and assist with channeling construction waste
In addition, Duffield Associates can assist in identifying sustainable
design and green building funding sources and developing grant
applications. Our construction review services can provide verification
and documentation necessary for project certification.
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