Jeff Rennells is Senior Project Manager and has been with Green Star Environmental since the company was founded in 2000. Responsibilities include all technical and regulatory aspects of environmental projects, as well as project planning, budget management, and project execution. Project execution includes planning and design, management of subcontractors, management of field personnel, and agency negotiation and communication.
Summary of Project Experience
Managed, installed and monitored a large monitoring well network to determine the extent of chlorinated solvent and petroleum impacts to subsurface soils and groundwater for a major facility in operation for over four decades in central Dallas. The site had a number of potential chemical and hydrocarbon source areas, including heavy metals, halogenated solvents, and petroleum. The services provided included the delineation of the halogenic and petroleum plume, as well as the quantification of the low risk of the site to potential receptors.
Managed numerous projects in the Dallas/Fort Worth area working under the Texas Risk Reduction Program (TRRP) guidelines to obtain No Further Action letters from the Texas Commission on Environmental Quality (TCEQ) based on the assessments of the different properties and guidelines under TRRP. This work entailed the recalculating of risk factors based on site-specific information obtained during the assessment field work, either through subsurface investigations, comparison of acceptable published data from similar soil types, by performing hydrogeologic tests to classify the groundwater, or using background comparisons. Some sites required limited remediation to meet the TRRP guidelines. The reduced remediation was accomplished through the revision of critical protective concentration limits (CPCL) for the chemicals of concern, which either reduced the amount of remediation or eliminated the need to remediate. The types of remediation conducted ranged from the removal of the impacted media above the revised CPCL through excavation, in-situ remediation, or, in some cases, the eliminating of the impacted groundwater media through a Municipal Setting Designation (MSD). The utilization of the sites ranged from industrial, commercial, or proposed future residential properties.
Provided remedial strategies for a facility located in the Cleveland, Ohio area. The site was in operation for over five decades and had a number of potential chemical and hydrocarbon source areas, including potential for halogenated solvents, and petroleum. Services provided included the review of previous environmental reports, removal of two hydraulic lifts, installation of a monitoring well network, delineation of halogenic solvent byproducts, and the preparation of an addendum Phase II report under the Voluntary Action Program (VAP) guidelines.
Managed, created, and maintained databases for current projects presently managed by Green Star Environmental. This has been helpful with the large amount of data acquired on larger projects and effective in providing graphs, tables, and an effective tool to evaluate data. The databases have provided a cost effective way to manage data when statistical methods are needed to determine trends, screening for chemicals of concern, and the importing of information for groundwater and risk modeling. This work has also included the creation of databases for Green Star Environmental clients to manage their specific programs, such as underground storage tank, remediation, and reimbursement programs.
Summary of Professional Experience
Senior Project Manager, Leigh Engineering, Inc., Dallas, Texas
Responsible for management of the design and implementation of subsurface investigations of potentially impacted industrial sites. This included supervising a staff of two project managers in training and managing work performed by several staff level personnel. Additional responsibilities included the development and implementation of training programs, and design of databases for clients to better manage their facilities programs and information collected from each facility.
Project Manager, Leigh Engineering, Inc., Dallas, Texas
Responsible for project management and service to industrial clients that included client and business development, monitoring well installations, excavation of impacted soils and source areas, waste characterization and disposal of industrial and hazardous wastes, preparation of remedial investigation, and risk assessment reports. Most of the projects managed pertained to assessments for industrial, financial, and petroleum marketing facilities.
Staff Geologist, Leigh Engineering, Inc., Dallas, Texas
Responsible for the installation and development of groundwater monitoring networks that included the logging of subsurface soils, developing cross sections, and interpretation of the subsurface information to effectively monitor contaminant distribution across different sites being investigated. Developed and implemented specific sampling protocols for each site for the proper delineation of chemicals and petroleum hydrocarbon releases. Generated assessment reports related to property transactions, and maintained and operated field instrumentation including portable gas chromatographs and flame ionization detectors for the environmental division.
Compliance Manager, United States Air Force, Abilene, Texas
Responsible for the management of a number of environmental compliance programs for a large air force base. The programs managed included the Storm Water Program, Emergency Response Program, Clean Drinking Water Program, and the Wastewater Discharge permit with the local POTW. Additional experience included an active role in a number of internal compliance audits of the environmental programs at the same air force base.
TSD Facility Manager, United States Air Force, Texas
Managed all hazardous waste generated on a large air force base. These responsibilities included managing a TSD permitted facility, conducting training, inspecting satellite accumulation sites, classifying hazardous and non-hazardous waste, scheduling contractor pick-ups, and security. This work also included supervising a staff of six people in the day-to-day operations of a large quantity generator TSD facility.
Education And Professional Designations
Education
- M.S. Environmental Management, Hardin Simmons University, 1996
- B.S. Geology, Minor in Science, Hardin Simmons University, 1992
- B.S. Industrial Technology, Southern Illinois University, 1986
- A.S. Nuclear Device Technology, Community College of the Air Force, 1985
Professional Awards, Licenses & Certifications
- Professional Geologist, Texas, 2003-present
- Implementing Environmental Management Systems for Performance Improvement Through Behavioral Change, ERM Certification and Verification Services, 2006
- Professional Geologist, Tennessee, 2004-present
- Corrective Action Project Manager, 2004-present
- Environmental Risk Based Corrective Action, University of Texas at Arlington, 1998
- OSHA 40-hour Training Course and 8-hour Annual Refresher, 1994-current
- Hazardous Waste Management Training, 1994
- Registered Environmental Manager, 1994-present
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