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The
professional staff at Cirrus has experience in the field of environmental
consulting which provides a strong
foundation for developing effective project solutions. The following
project descriptions provide examples of experience in the environmental
field possessed by Cirrus’
professionals. Although these represent only a few of the projects successfully
completed, they provide and indication of the diversity of experience available to Cirrus’ clients.
 Chemical Manufacturing/Distribution Facility, Texas:
Developed a Post-Closure Part B permit application for an area of soils contaminated with chromic acid at the
facility. In addition to developing the permit application, the closure design was
reviewed and evaluated for technical merit and constructability. Based on that
review, design changes were proposed to the TNRCC and were subsequently approved. Closure activities required the excavation, classification and disposal of a
large volume of contaminated soils from the site, as well as the construction of a
composite final cover system. Additional project responsibilities included conducting onsite pre-bid meetings to discuss the site and answer subcontractor questions as well
as evaluating subcontractor bids.
Industrial Waste Management Corporation, Texas:
Developed a risk-based closure plan for review and approval by the TNRCC for a wastewater treatment sludge
disposal/treatment facility. The facility consisted of 29 engineered sludge
management surface impoundments, two oxidation ponds and one engineered stormwater
detention pond. Collectively, the facility occupied 234 acres and had a volumetric capacity of seven million cubic yards. A detailed risk
assessment was generated as part of the plan since the facility is located adjacent to a wetlands area.
The closure plan was innovative in that (1) it was developed using the regulations
provided in 31 TAC Section 312 (Sludge Use, Disposal and Transportation) as
opposed to the industrial solid waste regulations provided in 31 TAC Section 335 and
(2) the closure plan was designed to return the facility to a natural wetlands area
capable of supporting the abundant waterfowl that migrate to the area annually while
protecting the health and well-being of the waterfowl species nesting there. The plan
was subsequently approved by the TNRCC and was implemented by the client.
Automobile Parts Reconditioning Company, Texas:
Prepared a Post-Closure Part B permit application for a former waste disposal area at the facility. The project
included the development of (1) a report discussing local and regional geology and
hydrogeology, preliminary closure plans (including engineering designs) for two
waste disposal units, (2) materials specifications for construction of the final
cover system for the units, and (3) a closure schedule and a cost estimate. Additional work
performed included the development of a compliance plan (which required computer
modeling to design an effective recovery system) for the site.
Ceramic Tile Manufacturing Company, Texas:
Prepared and implemented work plans for the investigation of three separate uncontrolled hazardous waste disposal
sites. Numerous PRPs were involved at one location, which required careful
coordination between parties. The work plans included sampling and analysis
procedures for surface and subsurface soils, surface impoundment sediments, and
waste materials. Plans were also developed for the installation, development and
sampling of numerous ground-water monitoring wells at each site. Site investigation
reports were prepared for each site, providing a summary and interpretation of the
results of the investigations implemented at each site.
Ceramic Tile Manufacturing Company, Texas:
Developed risk-based closure plans for two uncontrolled waste disposal units for review by the TNRCC.
A baseline risk assessment was generated as part of the closure plans.
The closure plans required the design of a slurry wall and a composite final cover system consisting of a
flexible membrane liner (FML) and two feet of compacted clay. Since the waste was
in direct contact with a shallow water-bearing zone, waste stabilization was also
implemented as part of the closure activities to minimize the opportunity for the
leaching of hazardous constituents by chemically treating the waste to a level
considered non-hazardous. The plans were approved by the TNRCC and were subsequently implemented.
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