GBK offers its services in many areas, including:

• Surface and groundwater sampling and analysis
• NPDES compliance determinations
• Drinking water quality investigations
• Landfill gas monitoring
• Contaminated land sampling and analysis
• Result interpretation and statistical and trend analysis
• CAA GDC risk assessment and air release modeling
• Work plan and QAMP development
• EPA Data Quality Objectives conformance
• CERCLA/SARA Title III reporting
• Phase I/II investigations
• Phase III remediations performed in conjunction with our experienced partners
• Hydrological/Hydrogeological studies

GBK is dedicated to providing its clients the highest level of professional services through the use of Board Certified Professionals and nationally accredited laboratories. Developing and Implementing Compliance Assurance Programs

GBK conducts environmental site assessments to include Phase I/II Site Assessments anywhere clients have need of the service. With years of experience you can be assured that the report you receive from GBK will be detailed, accurate and performed by an qualified environmental professional.

Phase I/II Environmental Site Assessment and Due Diligence

On November 1st, 2006 the All Appropriate Inquiry rule (AAI) became effective as the requirement for Phase I audits meeting the liability requirements for the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) protection. GBK has always conducted assessments in compliance with ASTM E 1527-05 standards meeting the higher professional qualifications required.

Reference Project:

Former Air Force Small Arms Range Site Investigation

Altus AFB, OK

Designed and performed a detailed field investigation to determine the extent of potential lead contamination at the Altus AFB former small arms range. The range had been used for a short period of time during the 1950s for training purposes. The survey was performed to determine whether remediation would be required under the terms of EPA guidance. Evidence of the range is still evident in the form of an earth berm and some concrete and metal detritus to the south of the berm. The area was scanned with a metal detector to help identify any further evidence of anthropogenic activity at the macro-scale. Evidence of activity was identified at the 50 and 100 yard transects from the berm (likely firing distances to the berm). A series of soil samples was taken from the berm and also along the 50/100 yard transects. All sample points were logged using a Trimble GeoXT GPS handheld device to sub-meter accuracy and a digital map produced showing this data for the final report. All samples were analyzed for potential lead contamination, but no tests were found to be positive found above naturally occurring background levels. The analysis was performed using EPA ‘Guidance on Systematic Planning Using the Data Quality Objectives Process.’

Some milestones and deliverables included:

1. Design of H&S plan, work plan and QAMP to Corps of Engineers specification;
2. Performed preliminary visit in order to facilitate work plan development;
3. Developed ‘null hypotheses’ for use with EPA Data Quality Objectives process;
4. Performed investigative procedures to assess contamination at micro and macro scales.
5. Delivered report with findings and recommendations for action.