Summit Environmental, Inc. personnel performed a Risk Based Corrective Action (RBCA) for a petroleum release at the Idaho Transportation Department Cambridge Maintenance Yard. During the decommissioning of three underground storage tanks (USTs), petroleum contamination was found.  Summit Environmental staff conducted petroleum release characterization, remediation and monitoring, targeting a Tier 0 closure.  The possibility of a Tier 1 closure required evaluating potential exposure scenarios.

Summit Environmental staff reviewed UST Monthly Inventory Control records to estimate the volume of released product. Samples were collected from soil borings and shallow test pits and analyzed for the petroleum contaminants of concern, as required by the Idaho RBCA Program, to determine the extent of the petroleum contaminated soil.  Three-dimensional computer modeling was conducted to estimate the extent of excavations required for a Tier 0 site closure.  An off-site land treatment site was constructed for the remediation of petroleum-contaminated soils.  Summit Environmental conducts quarterly groundwater monitoring and land treatment site sampling to determine site cleanup effectiveness and the progress of soil remediation.

HEALTH AND SAFETY CONSULTING AND AIR MONITORING
Client: Nelson Construction Company
Boise, Idaho

Summit Environmental staff provided Nelson Construction Company with Health and Safety Consulting services during closure capping at a contaminated wood treatment site, and during road construction at a municipal landfill site. Both projects involved heavy equipment in potentially hazardous environments. Services included development of site-specific Health and Safety Plans, worker training and compliance air monitoring.

INTERNATIONAL WATERSHED MONITORING PLAN
Client: Kootenai River Network
Kootenai River Watershed; Idaho, Montana and British Columbia

Summit Environmental is part of a team of consultants currently providing water quality planning services to the Kootenai River Network, Inc., a not-for-profit organization consisting of agency personnel, industry representatives and other interested parties from Idaho, Montana and British Columbia.  The project requires the development of a comprehensive water quality monitoring plan for the 18,000 square mile Kootenai River Watershed and interfacing ith regulatory agencies and other stakeholders in Idaho, Montana and British Columbia.

The team is collecting historical water quality data, inventorying available reference materials, and assessing ongoing monitoring programs.  Summit Environmental personnel have developed the Kootenai River Information System, a searchable, relational database of 'metadata' to manage inventoried reference materials and historical monitoring data from the region.

TECHNICAL AND REGULATORY EXPERT WITNESS SERVICES
Boise, Idaho

Summit Environmental is currently providing technical and regulatory expert witness services for plaintiffs in a petroleum release lawsuit.  Summit Environmental personnel have prepared expert opinions related to violations of environmental regulations, lack of adequate site characterization, and the Idaho RBCA Program. Summit Environmental has reviewed and commented on numerous technical documents and provided monitoring well and document summaries.

EMERGENCY RESPONSE CONSULTING AND HAZARDOUS MATERIALS CLEANUP
Client: Action Express, Inc.
Western United States

Summit Environmental provides 24-hour hazardous material emergency response consulting for Action Express, Inc. at the company's 23 truck terminals throughout the Western United States.

Summit Environmental staff prepared a hazardous material response program for Action Express, which includes a written response plan, spill response wall charts and five subcontracted first responder companies ranging from Spokane, Washington to Houston, Texas.  Standard Operating Procedures were developed for responding to commonly shipped hazardous materials.  A damaged goods management strategy was also prepared to promote reuse or recycling of damaged hazardous material containers.

Summit Environmental provided a 24-hour toll free consulting number for Action Express drivers and Corporate Risk Managers.  Technical assistance includes health and safety, regulatory notifications and negotiations, coordination of spill response procedures, accident site characterization, hazardous waste management, and spill report documentation.  In the event of a major hazardous material release, Summit Environmental will provide on-the-scene oversight of first responder companies and field remediation services.

LEAD-BASED PAINT AND ENVIRONMENTAL SITE ASSESSMENTS
Client: Idaho Transportation Department
New Meadows, Idaho

Summit Environmental staff performed Lead-Based Paint and Phase I Environmental Site Assessments (ESAs) for the Idaho Transportation Department (ITD) at five unoccupied, remote residential sites, located along US Highway 95.  ITD was acquiring the sites for highway realignment.  Lead-Based Paint Assessments were conducted according to HUD Lead-Based Paint Evaluation Guidelines, and the ESAs were conducted according to ASTM standards.

GROUNDWATER REMEDIATION SYSTEM OPERATION AND MAINTENANCE
Boise, Idaho

Summit Environmental is providing Environmental Services to operate and maintain a groundwater treatment system in Boise, Idaho.   The groundwater treatment system is designed to treat VOCs and has been in operation for eight years.  The system consists of three 40-foot deep pumping wells, 13 area monitoring wells, three piezometers, and an air stripping treatment system designed to treat up to 300 gallons per minute.   Summit Environmental staff provided measurement of groundwater levels, sampling of groundwater from the monitoring and pumping wells, evaluation and maintenance of the air stripper system, and the preparation of quarterly monitoring reports.

As part of this project, Summit Environmental staff performed pumping well maintenance.  This included coordinating down-hole camera surveys to assess the condition of the well screens and quantifying the presence of iron bacteria.  When well production rates fell below acceptable levels, Summit Environmental staff provided technical oversight during well redevelopment, which consisted of surge block and chemical treatment.  The treatment chemicals were a proprietary blend of acids to remove the mineral scale and a catalyst to aid in the removal of iron bacteria.  Groundwater production from wells redeveloped by Summit Environmental staff has increased nearly 60 percent.

BIOREMEDIATION OF PETROLEUM-CONTAMINATED SOIL
Client: Western States Equipment
Boise, Idaho

Summit Environmental staff provided environmental engineering service to remediate the former drain field and cistern areas of a truck repair shop, where vehicles were steam-cleaned and wash water was treated and discharged.  Phase I and II Site Assessments identified the cistern area for remediation, since soil samples taken from the area contained high concentrations of petroleum fuel, motor oil and grease.

Summit Environmental staff evaluated several remedial options, including in-situ treatment, on-site biological treatment and off-site disposal.  On-site bio-pile treatment was determined to be the most appropriate and cost-effective remedial option, since heavier, long chain hydrocarbons were present.

Summit Environmental staff excavated approximately 2,200 cubic yards of petroleum-contaminated soil from the drain field and cistern areas and processed the soil by sieving to remove large aggregate.   The large gravel material was returned to the excavation as backfill, in order to reduce backfill costs.  The remaining 1,600 cubicyards of petroleum-contaminated soil were then conditioned and placed in a bio-pile for bioremediation.

Summit Environmental personnel provided technical oversight to construct a monitoring well to a depth of 68 feet on-site.  Once the well was developed, groundwater samples were collected and laboratory analysis was conducted to assess BTEX concentrations and to monitor contaminant migration.  Because groundwater monitoring revealed no contaminant impacts above the regulatory levels, "No Further Action" was recommended to the Idaho Division of Environmental Quality.

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