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PPO"M LARAMIDE <br /> Statement of Qualifications N Environmental,LLC <br /> of California and Nevada. The assessment was performed on behalf of a Native <br /> American Tribe with trust and allotted lands in the area. <br /> The project included evaluation of the quantity and quality of water resources available <br /> to the Tribe. Data from various federal and state databases and reports were <br /> consolidated into a Geographic Information System (GIS) that was used to assess <br /> water resources in the basin. Several site visits yielded additional information on the <br /> status of Tribal water rights, active wells and water diversion facilities, and the locations <br /> of potential sources of contamination both within and outside Tribal trust lands. The <br /> interaction between the Carson River and the underlying aquifer was evaluated using a <br /> numerical groundwater model. <br /> Walter performed a preliminary evaluation of potential impacts on Tribal water <br /> resources from an abandoned copper/sulfur mine in the headwaters of the basin. The <br /> evaluation included review of available surface-water, groundwater, and sediment data <br /> to determine the extents of downstream impacts from metal-laden water released from <br /> the site. <br /> Results of the water resource assessment were presented to the Tribal government. <br /> Reports were prepared describing the assessment and evaluating wellhead protection <br /> issues. A Wellhead Protection Program was developed and submitted to the Tribal <br /> government and the United States Environmental Protection Agency. <br /> Technical Review <br /> Technical Review of RI/FS and EE/CA Documents, Illinois: Laramide and a team of risk- <br /> assessment experts are providing technical review of RI/FS and EE/CA documents on <br /> behalf of the USEPA. The site includes several unlined landfills containing a variety of <br /> chemical wastes. An estimated 1 million cubic yards of waste materials are included in <br /> the landfill areas, with the bases of most of the landfills beneath the water table. <br /> Discharges from the landfills have severely degraded groundwater quality with a variety <br /> of organic and inorganic contaminants, threatening a nearby stream, lake, and the <br /> Mississippi River. <br /> Laramide has provided technical comments on the results of groundwater <br /> investigations and on proposed remediation activities. Along with its subcontracted <br /> experts in risk assessment, Laramide has reviewed and commented on baseline and <br /> residual ecological risk assessments performed by the Potentially Responsible Parties <br /> (PRPs) for the site. We have participated in several conference calls with the PRPs to <br /> help streamline the project planning and review process and improve the quality of <br /> future data collection efforts. <br /> We continue to provide technical review services for this project. Ongoing project <br /> phases include assessment of DNAPL contamination and proposals for either <br /> remediation of residual DNAPL or further evaluations to justify a technical <br /> impracticability waiver for the site. <br /> August 2004 Page 6 of 7 <br />