Mission Bay Area
San Francisco, California
The Principals at Iris Environmental provided strategic planning and environmental
consultation services for Catellus Development Corporation, the developer of the unique and
immensely complex mixed-use development planned for the Mission Bay Area of San Francisco,
California. This project entails the redevelopment of over 300 acres of land within the heart
of downtown San Francisco. Past site uses included a wide variety of manufacturing and
industrial operations, including extensive rail-related operations and bulk oil and hydrocarbon
products storage, from approximately 1902 to present. The development plan includes high-density
housing; public and private open space; a hotel; police and fire stations; office, biotech,
research and development facilities; and retail and entertainment uses.
The members of Iris conducted two major site characterization projects and completed a human
health and ecological risk evaluation for the site. Using the results of the risk evaluations,
Iris Principals crafted a site wide Risk Management Plan, which detailed the specific management
measures to be undertaken during the different phases of the 20-year phased development. The San
Francisco Regional Water Quality Control Board, the designated Administering Agency under the
AB2061 program, approved the site characterizations, risk evaluations, and Risk Management Plan.
A Certificate of Completion was issued for the Site in May 1999, and development of the site began
in September 1999.
This project, which had been on the back burner for decades and had been branded by the
regulatory agencies and surrounding community as a "toxic waste site," represents a significant
achievement in the use of human health risk assessment and focused risk management to identify the
appropriate solutions for managing the risks associated with the development of environmentally
impaired property. Iris Environmental continues to provide environmental monitoring support to the
project through its evolution and construction.
MacArthur Transit Village
Iris Environmental developed and implemented a Remedial Action Plan to clean up the site of the future MacArthur Transit Village,
a planned mixed-use development featuring approximately 600 units of housing, community, and retail spaces.
Site soil and groundwater were contaminated by historical fuel releases from offsite properties.
Under RWQCB oversight, Iris Environmental designed a remedial program consisting of soil excavation,
limited groundwater extraction, and application of oxygen releasing compound (ORC) to assist natural
bioattenuation. Approximately 10,000 cubic yards of soil were excavated and landfilled.
Middlefield-Ellis-Whisman Federal Superfund Site
Mountain View, California
The Principals at Iris Environmental evaluated the suitability of expanding the existing
operations of a large computer software company to areas directly on top of a large Federal
Superfund Site in the South Bay. The development involved the demolition of numerous buildings
and the construction of multiple two and three story buildings, each between 55,000 to 75,000
square feet in size. Contamination at the Superfund Site consists principally of chlorinated
solvents in the ground water and soil. Active remediation of the groundwater continues and
involves the pumping and treating of the groundwater at nearby air strippers. The Principals
at Iris worked closely with the client and negotiated with the developer to identify those
areas of the site that would be most appropriate for future buildings based on the environmental
issues and the construction specifications that would be necessary to mitigate potential for
exposures. Additionally, Iris Environmental has initiated a risk communication program for
employees at multiple levels of the organization and has continued to respond to a series of
indoor air quality questions and concerns.
Similar exercises have been completed for two additional large sites, one a missile
manufacturing facility and the second a former silicon wafer fabrication facility. Both sites
required the evaluation of risk to future occupants (internet software R&D; operations),
technical interface with local planning departments, CEQA mitigation measure evaluation, site
investigation, and environmental due diligence assessments.
Site Environmental Management Support
Automotive Manufacturing Facility
Iris Environmental provides strategic and technical environmental consulting services for New United Motors
Manufacturing, Inc. (NUMMI) of Fremont, California. Multiple projects have been undertaken to assess subsurface site conditions and to engineer solutions for impacts to soil and groundwater beneath the facility. Iris Environmental has addressed multiple RCRA and similar regulatory closure programs, including those related to the cessation of NUMMIís manufacturing operations and the sale of the plant to another automobile manufacturer. Iris Environmental is currently assisting NUMMI in developing plans for source reduction and long term oversight of legacy environmental impacts to Site soil and groundwater. Iris Environmental principals continue to represent the automobile manufacturer before state and local regulatory agencies.
Indoor Air Quality Evaluation
Iris Environmental has been providing support to a major southern California School District
to evaluate indoor air quality impacts surrounding the use of portable classrooms. The project
has included designing a statistically based air-monitoring program to determine the levels of
chemicals and molds that may be attributable to the portable classrooms. Working closely with
members of a Technical Working Group, we developed indoor air health standards to identify and
prioritize those portable classrooms that pose the greatest risk to the health of students and
teachers. All targeted portable classrooms are currently the subject of additional evaluations.
Aerospace Research and Manufacturing Facility
Iris Environmental is assisting a developer through the environmental due diligence phase
of purchasing a large aerospace research and manufacturing facility located in Sunnyvale,
California. Historical operations at the facility resulted in the release of a variety of chemicals,
including chlorinated solvents, to the underlying soil and groundwater. The facility is currently
undergoing active ground water remediation, under the direction of the Regional Water Quality
Control Board. Our services have included conducting supplemental soil and groundwater
investigations to understand the extent of existing environmental liabilities, and evaluating
the significance of the analytical results. Following the purchase of the property, we have been
involved in monitoring the environmental conditions associated with the building demolition
activities. Additionally, we have conducted risk-based evaluations to determine the appropriate
health-protective responses to the identification of previously unknown areas of contamination.
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