Education

-B.A. (Geology) Slippery Rock University, Slippery Rock, Pennsylvania, 1974.
-M.A. (Geology) University of Missouri, Columbia, Missouri, 1976. Thesis research on the mapping, petrography and genesis of a portion of the southern Wind River Mountains, Wyoming.

Representative Experience

• Early Response Action, Central and Camelback WQARF, ADEQ, Project Manager. Responsible for groundwater sampling, subsurface gas monitoring, and water level monitoring at this state superfund site. The monitoring well network consists of more than 30 monitoring wells completed at several depths in the aquifer and four groundwater extraction wells. HGC has recommended and installed additional wells to complete the network. The contaminant of concern is PCE from a dry cleaner, and to a lesser extent, petroleum hydrocarbons. HGC operates a 150-gallon-per-minute groundwater extraction system that utilizes activated carbon to treat the PCE-contaminated water prior to discharge to a canal. Prepares quarterly operation and maintenance (O&M) reports that describe system operation, carbon usage, and PCE removal rates. HGC developed a vadose zone gas flow model to design an SVE system to remove PCE from the vadose zone. Detailed design is in progress and HGC will be responsible for system O&M. Prepares quarterly reports and electronic data deliverables and also represents the client at Community Advisory Board meetings.

• Early Response Action, Cooper and Commerce WQARF site, ADEQ, Project Manager. Responsible for conducting an evaluation of a PCE-contaminated state superfund site. In addition to PCE, cyanide and heavy metals are also present in the groundwater. HGC currently samples site monitoring wells and the Town of Gilbert supply wells, which have been affected by PCE and prepares quarterly reports. Following receipt of pending site access agreements, HGC will also conduct a soil gas and soil sampling investigation in the suspected source area.

• Sparks Avenue well investigation, Reno Nevada, Washoe County Department of Water Resources. Project Manager. Responsible for conducting an assessment to determine the source of PCE contamination to the Sparks Avenue and Poplar No. 2 well sites. The investigation included installation of 14 monitoring wells and development of a groundwater network of 19 wells that included the new and existing monitoring wells and the production wells. In addition to groundwater monitoring, the project included aquifer testing and production well geophysical and video logging. Data from these investigations were used to update the Regional DYNFLOW model. Simulators were run to determine capture zone and potential source areas to the contamination. Additional transport modeling involved the use of TRACRN to assess vertical migration of PCE from shallow to deeper layers of the aquifer. A summary report with recommendation for future work was developed. HGC conducted quarterly groundwater monitoring and developed an annual report. Currently, HGC is assisting WCDWR in development of a work plan for a soil gas investigation.

• Methane Abatement, Buckhead Mesa Landfill, Gila County Solid Waste Department, Payson, AZ, Project Manager. Responsible for conducting soil vapor extraction tests to obtain data to develop a gas flow model for the size that was used to design a remediation system. Supervised installation of cutoff trench with a passively vented gas collection system.

• LUST Projects, Greenlee County Public Works, Duncan and Clifton AZ. Project Manager. Responsible for Tier 2 risk assessment and development of Declaration of Environmental Use Restriction for LUST site in Duncan. Managed site investigation and site characterization report.

• Landfill Methane Abatement, Arizona Public Service, Project Manager. During installation of underground conduits and manholes, APS observed near-explosive levels of methane in manhole vaults. Mr. Petrus managed the site characterization, gas flow modeling, remedial design and installation of a system that forces air into the manholes and conduits to create a positive air pressure to prevent methane infiltration.

• West Sky Harbor Airport Biosparging Project, City of Phoenix Aviation Department, Task Manager. Responsible for developing methane monitoring program for gas probes, buildings, sewers and sumps above jet fuel release. Developed the monitoring requirements, action levels, and response actions. Responsible for all permitting tasks for this LUST remediation project. Tasks included obtaining air permits for a thermal oxidizer, securing a Poor Quality Groundwater Withdrawal Permit, obtaining all NOIDs for more than 100 remedial wells, applying for and obtaining a city use variance for the remediation project, and interfacing with ADEQs LUST and APP program managers. Work has also included development of drilling specifications, methane monitoring and reporting and oversight of drilling operations.

Prior Experience

1997-2002 BE&K/Terranext, Phoenix, Arizona

Remedial Investigation/Feasibility Study, West Van Buren WQARF Site, ADEQ, Project Manager. Responsible for the development of site water quality and elevation databases and maps, installation of groundwater monitoring wells, development of RI/FS workplans, and semi-annual sampling of site monitoring wells. Participates in CAB meetings. Responsible for the development of surface water sampling strategy to assess the effects of contaminated well discharges into irrigation canals. Responsible for the oversight management of construction of an Early Response Action for a PCE contaminated soil and groundwater site.

Landfill Expansions, Buckhead Mesa and Russell Gulch Landfills, Gila County, Arizona, Project Manager. Responsible for the final design, permitting, specification, bidding, and construction oversight for two county landfill expansions. The design includes a geocomposite liner, HDPE liner, and a geonet drainage layer. Construction budgets exceeded $2 million. More than 150,000 cubic yards of soils were excavated and more than 100,000 cubic yards of soil were compacted during construction activites. More than 20 acres were added to the landfills during the construction.

Landfill Closures, Greenlee County, Arizona, Project Manager. Prepared site investigations to determine closure plans for the landfills, managed the design, HELP modeling and preparation of plans and specifications. Assisted in the contractor procurement and provided construction management and CQA/CQC services. Project involved the successful placement of approximately 20 acres of final cover on all the landfills.

East Washington Fluff Early Removal Action, Phoenix, Arizona, Arizona Department of Environmental Quality, Construction Manager. Responsible for the design, bidding, and specification development of a 10 acre cap on a PCB and lead contaminated hazardous waste site. Served as contractor qualifying party for the contract and maintained overall construction quality assurance requirements. The project involved the removal of more than 5,000 tons of RCRA/TOSCA hazardous waste.

Groundwater Treatment System Operation and Maintenance, Winslow, Arizona, Arizona Department of Environmental Quality, Project Manager. Managed the operation and maintenance of a groundwater recovery trench that intercepts gasoline contaminated groundwater. The system includes a pneumatic recovery pump, oil water separator, and carbon units. Project included response to system upsets, monthly sampling and analysis, and semi-annual reporting. When the remediation was complete, the treatment system was dismantled.

Conceptual Model Development for the Alameda-Priest Project Area, Arizona Department of Environmental Quality, Project Manager. Prepared an ASTM conceptual model for this 8 square mile project area with historical solvent contamination. Reviewed files, compiled groundwater quality and flow maps and identified four potential areas of concern based on water quality results and previous land and property use. Developed recommendations for future investigations.

Aluminum Dross Removal, City of Tucson, Arizona, Contract Manager. Responsible for activities during the planning, excavation, loading, hauling, and disposal of approximately 1875 tons of contaminated soils. Excavated areas were backfilled and regraded to natural contours. Planning activities included the preparation of a Health and Safety Plan and coordination with the City, the Arizona Department of Environmental Quality (ADEQ), local community associations, and the media.

1992-1997 Roy F. Weston, Inc., Phoenix, Arizona

Groundwater Contamination Assessment, Arizona, Arizona Department of Environmental Quality, Project Manager. Served as project manager for one of the largest state Superfund investigations in Arizona. Responsible for a groundwater investigation of tetrachloroethene (PCE), trichloroethene (TCE), and aromatic hydrocarbon contamination over a 25-square-mile area in West Phoenix. This investigation has used soil-gas surveys to locate contamination sources, sampled more than 60 monitor wells to identify the plumes, included aquifer tests at rates of 3,000 gpm for the design of recovery systems, used mobile laboratories for rapid soil analyses, and used capture zone modeling to develop remedial action alternatives. Installed 500-ft-deep sentinel wells to detect and monitor a PCE and TCE groundwater plume upgradient from a major municipal supply well. Authored the work plan for the RI/FS of the combined Central Phoenix Groundwater Project Area.

Construction of Groundwater Remediation System, Arizona, Arizona Air National Guard, Project Manager. Construction manager for a $1.2-million groundwater remediation project that included installation of 8 recovery wells and 5 recharge wells, and construction of a groundwater treatment plant to extract, treat, and recharge 150 gpm of chlorinated solvent- contaminated groundwater. The project is part of the Tucson International Airport NPL site. The project was completed on time and within budget.

Municipal Landfill Closure, Arizona, Town of Miami, Project Manager. Responsible for the development of a closure and post-closure plan for the town's 7-acre landfill. The plan was submitted to and approved by ADEQ. Responsible for coordinating the contractor to install the final cover.

Preliminary Assessment/Site Inspection, Various Sites in Arizona, Bureau of Land Management (BLM), Project Manager. Conducted preliminary assessments and site investigations at four municipal landfills on BLM property in Arizona. Involved collecting surface water, groundwater, and soil samples for determination of hazardous risk of the landfills to human health and the environment. Used EPA PASCORE model to rank the sites. Several sites were found to have solvent and pesticide contamination.

Environmental Impact Statement (EIS)/Environmental Impact Report (EIR), Lawrence Livermore National Laboratories (LLNL), California, DOE, Task Leader. Responsible for responding to public comments and finalizing the EIS report for LLNL. Areas of contribution included waste management, geology, and hydrogeology issues. The report served as the decision-making document for the continued operation of LLNL by the University of California.

Municipal Landfill Consulting, Arizona, City of Eloy, Project Manager. Assisted the City to respond to a consent order from the Arizona Department of Environmental Quality to get their landfill in compliance. Provided the city with cost, schedule and approach to getting into compliance. Also analyzed the options for future solid waste plans. Made recommendations to the city council in a public meeting. Prepared methane monitoring plan and installed methane probes. Instructed waste screening course for five City employees. Prepared surface water and groundwater management plans. Successfully obtained permit for the solid waste facility plan for the landfill.

Municipal Landfill Audit, California, Quechan Tribe, Site Auditor. Conducted a landfill audit of this <20-ton/day landfill according to EPA and California regulations. Numerous violations were discovered. Recommendations for corrective action and associated costs were developed and presented to the Tribe.

Municipal Landfill Design, Arizona, White Mountain Apache Tribe, Project Manager. Managed the preliminary geotechnical investigations and design of a 17-ton/day, 30-year municipal landfill. Design incorporated EPA Part 258 technical criteria including a leachate collection and evaporation system. Prepared bid documents and participated in contractor selection. Provided periodic observation of landfill construction.

1987-1992 CH2M HILL, Inc., Dallas, Texas

Site Investigation, Texas, U.S. Air Force, Field Investigation Leader. Conducted site investigation at Brooks Air Force Base under the Installation Restoration Program. Investigated nine areas of potential contamination, including four sanitary landfills, using soil-gas testing, surface geophysics, soil borings, sediment sampling, and monitor well installation. Defined contamination sources and participated in FS analysis. The results of the field investigation located a source of TCE contamination from a fire protection training area that resulted in a groundwater TCE plume that migrated off-site.

Site Remediation, Texas, EPA, Project Manager. Technical and oversight services at the French Limited National Priority List (NPL) site. Responsibilities included weekly site inspections during construction and startup of a bioremediation treatment system for the destruction of organic sludges and contaminated groundwater containing chlorinated solvents, polynuclear aromatics, and polychlorinated biphenyls (PCBs) from a 13-acre waste lagoon.

Remedial Design, Texas, EPA, Project Hydrogeologist. Senior member of project team providing review and consultation to EPA for the design of remedial actions at the MOTCO NPL site. Remedial
actions included installation of slurry walls and recovery wells for the remediation of contaminated groundwater and dense, nonaqueous phase liquids.

Site Assessment, Kentucky, DOE, Task Investigator. Supervised the subsurface soil boring program for the Phase I site investigation at the Paducah Gaseous Diffusion Plant. Wrote technical memorandum for the soil boring task for the site investigation.

RI/FS, New Mexico, EPA, Project Manager. RI/FS at the United Nuclear Uranium Tailings site at Church Rock, NM. Wrote the RI report to determine the extent of groundwater contamination to three aquifers beneath the site. Participated in the development of alternatives to remediate groundwater contamination and cover the tailings ponds.

UST Investigations, Texas, Confidential Client, Project Manager/Hydrogeologist. Served as project hydrogeologist for more than a dozen UST sites for a major convenience store and gasoline retailer. The scope of work for these projects included remedial response, site investigations, groundwater assessments, tank removals and replacements, and developing groundwater recovery and treatment systems.

Groundwater Remediation, Texas, Confidential Client, Project Manager. After a 2,000-gallon leak was observed from a UST located above a sole-source drinking water aquifer, responsible for mobilizing contractors to excavate trenches for product recovery. Monitoring wells were installed to locate additional free-phase product and track plume movement. Recovery wells were installed, and a recovery system was designed that included free-phase product removal and dissolved-phase treatment.

UST Investigation, Texas, Car Rental Company, Project Hydrogeologist. At a major airport, a site investigation resulted in the discovery of more than 8,000 gallons of gasoline floating on the water table. Following removal of the tanks, installed wells that became a part of the free-phase product recovery system and acted as a hydraulic barrier to further migration of the dissolved and floating phases.

1985-1987 Camp Dresser & McKee, Dallas, Texas

Superfund Investigations, Region VI States, EPA, Assistant Regional Manager. For the REM II Superfund Program, was responsible for investigations at more than a dozen sites in four states. Site work ranged from enforcement support to RI/FSs. Sites included a mixture of creosote, solvent, and heavy metal contamination.

Technical Support, Various States, EPA, Project Investigator. Responsible for providing technical review to EPA Region VI project managers for work plans, remedial investigations, and FSs conducted at federal facility sites operated by the Air Force, Navy, and Army.

Landfill Siting, New Mexico, City of Albuquerque, Task Manager. Responsible for the siting task to locate a new municipal landfill. Developed economic, hydrogeologic, socioeconomic, and land use fatal flow criteria for siting. Narrowed the potential sites from a 2,000-square-mile area to two final sites. Prepared preliminary cost estimates for site development. The final site was selected and is now in operation.

Sanitary Landfill Assessment, Texas, City of Beaumont, Lead Investigator. Conducted investigations to audit the City's landfill practices and evaluate bids for privatization of the landfill. Developed recommendations for landfill management that would reduce operating costs and retain landfill operation by the City.

Clear Creek NPL Site RI, Idaho Springs, CO, EPA, Technical Reviewer. Senior technical reviewer for this EPA project that involved metal leaching and surface and groundwater contamination in an historical gold and silver mining region. The investigation included geologic, geochemical, and hydrogeological investigations of abandoned, large, deep mines; small adits; heap leach piles; and waste rock areas. The investigation was the basis for developing remedial alternatives to improve the water quality in Clear Creek.

Dredging Project, Texas, U.S. Army Corps of Engineers, Project Manager. Characterized sediment thickness and composition in two lakes at Fort Hood. Developed plans and specifications for the hydraulic dredging and sediment disposal. Resulted in the removal of 100,000 yd3 of sediment.

1983-1985 NUS Corporation, Pittsburgh, Pennsylvania

Environmental Audits, Tennessee and New York, DOE, Project Hydrogeologist. Part of a senior audit team responsible for conducting RCRA and CERCLA compliance audits at DOE's Brookhaven National Laboratory and the K-25 facility at the Oak Ridge National Laboratory.

Sanitary/Hazardous Landfill Investigations, Various Sites, EPA, Lead Investigator. Responsible for the development of RIs at more than a dozen sanitary landfills contaminated by hazardous waste. Included field investigations using monitor wells, surface and borehole geophysics, and soil-gas. Participated on FS teams for remediation of the sites.

Leachate Recovery System Design, New Jersey, EPA, Project Manager. For the G.E.M.S. Landfill Superfund site, developed a groundwater recovery system for the removal and treatment of sanitary landfill leachate to prevent migration of contaminants to nearby residences.


PROFESSIONAL AFFILIATIONS:

Arizona Hydrological Society
Arizona Association of County Engineers
Solid Waste Association of North America
Arizona Association of Industries

CERTIFICATIONS:

Environmental Manager: State of Nevada EM-1536 (1996)
Registered Site Manager: State of North Carolina (1999)
Course Instructor for Aquifer Testing Brookhaven College (1991)
Arizona Licensed Contractor Qualifying Party, Hazardous Material Abatement & Containment (No. AE-15644)


PUBLICATIONS AND PRESENTATIONS:

Petrus, R.T. and J.S. McLeod. 1991. "Aquifer Storage and Recovery Applications for Texas." Texas ASCE Fall Meeting, South Padre Island, TX.

McLeod, J.S., L. Amans, R.T. Petrus, and B. Bruns. 1991. "Aquifer Storage and Recovery C Kerrville, Texas, Case Study." Presented at the Fifth Biennial Artificial Recharge Symposium, Tucson, AZ.