About Us - Key Personnel

Dr. Paul Lear, Ph.D.
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Technical Specialties

Technical project oversight, soil stabilization/solidification, ash stabilization and dewatering, bioremediation, dewatering, water treatment systems and thermal desorption applications.

Experience Summary

Dr. Lear has over 20 years of experience in the environmental remediation industry which includes leading over 300 projects in the arenas of bioremediation, chemical oxidation, dewatering, soil washing, stabilization/solidification, thermal desorption and water treatment for hazardous, toxic and radioactive wastes. His responsibilities have involved management in a technical fiscal, and personnel capacity.

Credentials

  • B.S., Soil Science University of Nebraska Lincoln
  • M.S., Soil Chemistry/Mineralogy University of Illinois
  • Ph.D., Soil Chemistry/Minerology University of Illinois
  • 40-Hour Hazardous Waste Operations Training
  • 8-Hour Hazardous Waste Operations Supervisor Course
  • 10-Hour OSHA Construction Safety Training
  • Confined Space Training
  • Health and Safety Officer Certified
  • Competent Person Excavations OSHA 29 CFR 1910.120 (e)(8)

Key Projects

  • Former MGP Site Remediation Edison, New Jersey. Technical Director for the in-situ stabilization of 20,000 cy of soils at a former MGP site. Dr. Lear was responsible for development of the stabilization formula, set-up and initial operation of the stabilization system, and evaluation and monitoring of performance data.
  • Firing Range Stabilization Anniston, Alabama. Anniston, Alabama. Technical Director for the delineation and stabilization of 16,000 cy of soil contaminated with lead from a former small arms range. The project involved the in-place characterizing the soil, excavation and disposal of non-hazardous soil at an on-site landfill, excavation, treatment, and disposal of hazardous soil at an on-site landfill, and site restoration. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents and system, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data.
  • Former Mercury Recovery Site Remediation Colonie, New York. Colonie, New York. Technical Director for the excavation, transportation and disposal of 4,000 cy of mercury-impacted soil and the in-situ stabilization of 12,000 cy of soils to depths of 70 feet below ground surface a former MGP site. The treatment area was adjacent to both an active warehouse facility and an active Amtrak rail line. Dr. Lear was responsible for set-up and initial operation of the stabilization system, and evaluation and monitoring of performance data.
  • Former MGP Site Remediation Kinston, North Carolina. Technical Director for the mechanical dredging of 5,000 cy of MGP impacted sediments and the in-situ stabilization of 59,000 cy of soils at a former MGP site. Dr. Lear was responsible for development of the stabilization formula, set-up and initial operation of the stabilization system, and evaluation and monitoring of performance data.
  • Former MGP Site Remediation Paulsboro, New Jersey. Technical Director for the excavation, transportation and disposal of 3,000 cy of MGP impacted soils and the in-situ stabilization of 23,000 cy of soils at a former MGP site. The treatment area was adjacent to both an active PSEG warehouse and an active CSX rail yard, with a portion of the treatment area located beneath a city street requiring removal and utility relocation. Dr. Lear was responsible for participation in negotiations with LSRP, development of the stabilization formula, set-up and initial operation of the stabilization system, and evaluation and monitoring of performance data.
  • Fly Ash Restoration Project Kingston, Tennessee. Technical Consultant for the remediation of 5.3-million cy of fly ash released into the Emory River when a containment dyke failed at the TVA Kingston Power Plant. Dr. Lear conducted technical assessments of potential removal and dewatering technologies, and developed and presented 16 processing alternatives, including a process flow diagram and mass balance for each.
  • Former MGP/Arsenic Site Remediation Edgewater, New Jersey. Technical Director for the bench- and pilot-scale treatment of contaminated soils at a former MGP/arsenic ore processing site using both bucket and auger mixing methods. Dr. Lear oversaw the bench-scale treatability study, assisted with the set-up and initial operation of the pilot stabilization system, and evaluated and monitored performance data.
  • Hydraulic Barrier Installation North Haven, Connecticut. Technical Director for the design and installation of a hydraulic barrier wall constructed by in-situ stabilization. The wall was over 5,200 lf and ranged in depth from 9 to 30 ft below ground surface. This was the first HBW constructed by in-situ mixing methods. Dr. Lear was responsible for participation in negotiations with CTDEP, developing the mix design and monitoring long-term compatibility testing, assisting with set-up and initial operation of the in-situ mixing system, and evaluating and monitoring performance data.
  • SS Treatment of Chlorinated Soils Augusta, Georgia. Technical Director for the in-situ stabilization of 21,000 cy of VOC-impacted soils at a former commercial hazardous waste storage and treatment facility Superfund site. The treatment depth ranged from 2 to 36 ft below ground surface. Shallow treatment (10 ft) was performed via excavator bucket mixing, while deep treatment (>16 ft) was done via auger mixing. Dr. Lear participated in negotiations with GADEP, assisted with set-up and initial operation of the stabilization system, and evaluated and monitored performance data.
  • ISS Treatment of TCE-impacted Clay Soil Jonesborough, Georgia. Technical Director for the excavation, transportation and disposal of 2,000 cy of TCE-impacted soils and the in-situ stabilization of 13,000 cy of soils from a depth of 3 to 35 ft below ground surface. This was the first TCA site in Georgia where ISS treatment was approved by the GADEP. Dr. Lear was responsible for conducting negotiations with the GADEP, assisting with set-up and initial operation of the in-situ mixing system, and evaluating and monitoring performance data.
  • DELMARVA Phase 3 ISS Wilmington, Delaware. Technical Director for the excavation, transportation and disposal of 2,500 cy of MGP-impacted soils and the in-situ stabilization of 12,000 cy of soils. Dr. Lear developed the stabilization formula, assisted with the set-up and initial operation of the stabilization system, and evaluated and monitored performance data.
  • Lead-Impacted Sediment and Soil Stabilization Tampa, Florida. Technical Director for the stabilization of 19,000 cy of lead-impacted soils and sediment and the installation of a Cutter Soil Mixed hydraulic barrier wall at a former metal recycling site. Dr. Lear's responsibilities included the set-up and initial operation of the stabilization system, oversight of the installation of the HBW and solidification of spoils, and the evaluation and monitoring of performance data for both the stabilization treatment and barrier wall installation.
  • ISS Treatment at a Former MGP Site Camden, New Jersey. Technical Director for the excavation, transportation and disposal of 49,000 cy of MGP-impacted soils and the stabilization of 23,000 cy of soils from a depth of 12 to 30 ft below ground surface. This was the first MGP site in NJ where ISS treatment was approved by the NJDEP. Dr. Lear conducted negotiations with the NJDEP, developed the stabilization formula assisted with set-up and initial operation of the stabilization system, and evaluated and monitored performance data.
  • West End Mercury Project Oak Ridge. Tennessee. Subject Matter Expert for the removal of mercury-impacted sediments from the West End sewer lines and the subsequent separation of mercury from those sediments, followed by the treatment of sediments to render them non-hazardous under RCRA. Dr. Lear provided expertise on the physical separation of mercury, sediment material handling/processing, sediment treatment and safe operations involving mercury-impacted soils. He also assisted in the design, set-up and operation of the mercury separation and sediment treatment system while evaluating and monitoring performance data.
  • Refinery Impoundment Sediment and Soil Stabilization Paulsboro, New Jersey. Technical Director for stabilization of 19,000 cy of impacted sediment and underlying soils at two stormwater retention impoundments at an operating refinery. Dr. Lear was responsible for developing the stabilization formula, assisting with set-up of the stabilization system, and evaluating and monitoring performance data.
  • Pesticide-Contaminated Sediment Stabilization Portland, Oregon. Technical Director for the stabilization of 21,000 cy of pesticide and VOC-contaminated sediment at a former pesticide manufacturing facility. Dr. Lear oversaw on-site pilot testing, assisted with the set-up and initial operation of the stabilization system, and evaluated and monitored performance data.
  • Former MGP Site Treatment White Plains, New York. Technical Director for the ISS treatment of 25,000 cy of NAPL-contaminated soils at a former MGP site. Dr. Lear oversaw on-site pilot testing, assisted with the set-up and initial operation of the stabilization system, and evaluated and monitored performance data.
  • Lead-Contaminated Soil Stabilization Beaver, Pennsylvania. Technical Director for the stabilization of 50,000 cy of lead-contaminated soil, debris and glass. Dr. Lear developed a real-time QC program to monitor and adjust the stabilization formulation to allow for adjustments based on changing waste characteristics, oversaw on-site pilot testing, assisted with set-up and initial operations of the stabilization system, and evaluated and monitored performance data.
  • Pesticide-Contaminated Soil Stabilization. Technical Director for the stabilization of 5,000 cy of pesticide-contaminated soil at a former pest control facility. Dr. Lear's responsibilities included the development of the stabilization formula, assisting with set-up and initial operations of the stabilization system, and evaluation and monitoring of performance data.
  • Hanford Sludge Treatment Project Richland, Washington. Technical Consultant for the removal, treatment and packaging of 50 cy of remote-handled transuranic waste at the DOE Hanford site. Dr. Lear provided technical consulting for the evaluation and selection of removal and treatment alternatives, reviewed the design work by others and provided technical comments.
  • Demonstration of Radioactive Decontamination of Common Building Materials Knoxville, Tennessee. Technical Manager for the demonstration of decontamination of common building materials following detonation of a "dirty" bomb. Dr. Lear developed the methodologies for simulating contamination, verification of that contamination and verification of decontamination of various material surfaces. He successfully executed the demonstration decontamination of both porous and non-porous surfaces.
  • Lead-Contaminated Soil Stabilization Benton Harbor, Michigan. Technical Manager for the stabilization of 70,000 cy of lead-contaminated soil, debris and battery casings. Dr. Lear was responsible for developing the stabilization formulation and technical specifications for the stabilization reagents, assisting in the set-up and initial operation of the stabilization system, overseeing on-site pilot testing, and evaluating and monitoring performance data.
  • Phosphate Plant Emergency Water Treatment Riverton, Florida. Technical Manager for the accelerated treatment and off-site disposal of 250-million gallons of low pH waters from a phosphate fertilizer plant following a hurricane event. Dr. Lear developed and implemented a 2-million gallon per day liming plant including a novel combination of limestone and quicklime that reduced reagent costs, assisted in the set-up and initial operation of the plant, and evaluated and monitored performance data for process enhancement and optimization.
  • Fox River OU2-OU5 Sediment Treatment Design Green Bay, Wisconsin. Technical Manager for the design of the sediment treatment system for the 3.5-million cy of PCB-contaminated sediment in OU2-OU5 of the Fox River. Dr. Lear was responsible for overseeing sediment and elutriate treatability testing and providing technical management and support to the sediment treatment design team from basis of design through 60%. He advocated the use of desanding to separate non-contaminated sand for re-use to minimize the final disposal volume.
  • Fine Fractions Stabilization Front Royal, Virginia. Technical Manager for the excavation, treatment and off-site disposal of 12,000 cy of arsenic- and antimony-contaminated soil and sediment. Dr. Lear conducted treatability testing and developed the mix design, developed the work plans and treatment procedures for full-scale treatment involving the use of an excavator to mix 200 cy batches, provided technical support for full-scale treatment, and evaluated and monitored performance data for treatment activities.
  • SWMU 22 Soil Stabilization at the Sunflower Army Ammunition Plant DeSoto, Kansas. Technical Manager for the stabilization of soil contaminated with lead, nitrocellulose and nitroglycerin at an Army ammunition plant. The project included direct push sampling to delineate areas contaminated with greater than 10% by volume explosives. Dr. Lear was responsible for developing the stabilization formulation and technical specifications for reagents, developing the work plan and procedures for full-scale treatment, assisting with set-up and initial stabilization system operation, oversight of on-site pilot testing, and evaluating and monitoring performance data.
  • Treatment of Gypstack Water Mulberry, Florida. Technical Manager for the treatment and off-site disposal of 160-million gallons of low pH phosphate waters from a closed phosphate fertilizer plant. Dr. Lear developed and implemented a 3-million gallon per day liming plant including a novel combination of limestone and quicklime that reduced reagent costs by 60%, assisted in the set-up and initial operation of the plant, and evaluated and monitored performance data for process enhancement and optimization.
  • Acid Mine Drainage Treatment Iron Mountain, California. Technical Lead for the treatment of acid mine drainage and restoration of mine tailings at the Iron Mountain Mine. Dr. Lear developed an alternative liming process, which reduced reagents costs by 50%.
  • Pond 26 Stabilization Boundbrook, New Jersey. Technical Manager for the stabilization of 45,000 cy of still bottoms and tars from a former chemical plant. Dr. Lear was responsible for conducting treatability testing to determine the mix design, developing work plans, treatment procedures and technical specifications, providing technical support for the pilot- and full-scale treatment, and evaluating and monitoring performance data on the excavation and treatment activities.
  • Former Henry Wood and Sons Paint Factory Wellesley, Massachusetts. Technical Manager for the excavation, treatment and on-site disposal of 45,000 cy of hexavalent chromium-contaminated soil and paint sludge. Dr. Lear conducted treatability testing to determine the mix design, oversaw the development of work plans, treatment procedures and technical specifications for the full-scale treatment, provided technical support for in-situ processes, and evaluated and monitored performance data on excavation and treatment activities.
  • Mercury Remediation Chicago, Illinois. Technical Manager for the inspection, cleanup and final clearance of mercury-impacted residences under the direction of the Illinois Attorney General and EPA Region V. Dr. Lear developed work plans, cleanup procedures and technical specifications for the mercury vapor analyzers and mercury extraction reagents. He also evaluated and monitored performance date on inspection, cleanup and final clearance activities, and provided expert witness opinion and testimony on the applicable means and methods for remediation of mercury contamination.
  • New Pretreatment Plant Design Riverside, California. Technical Manager for the design of a new Pretreatment Plant at the Stringfellow Superfund site. Dr. Lear served as the technical leader of the design team, evaluating treatment technologies and treatment trains. The team selected technologies for bench-scale testing and oversaw on-site treatability testing, worked together to select the most promising treatment trains and develop lifecycle costs based on bench-scale results, developed and implemented the pilot-scale testing program, and completed the basis of design and conceptual design.
  • Carbon Disulfide Holding Pond Remediation Versailles, Pennsylvania. Technical Lead for the remediation of holding ponds contaminated with carbon disulfide at the Flexsys facility. Dr. Lear developed the technical approach for the separation of carbon disulfide from the holding pond sludge and evaluated and monitored performance data for on-site treatment activities.
  • Square D Groundwater OU1 Bordentown, New Jersey. Technical Manager for the in-situ geochemical fixation of copper and other metals in the groundwater at a former manufacturing facility. Dr. Lear developed the fixation treatment and injection plan for the site, interfaced with state regulators to allow the use of an innovative technology, and evaluated and monitored the pilot test data which allowed no further action to be required at the site.
  • Sunflower Army Ammunition Plant SWMU 10 and 11 Soil Stabilization DeSoto, Kansas. Technical Manager for the stabilization of 75,000 cy of soil contaminated with lead, nitrocellulose and nitroglycerin at an Army ammunition plant. Dr. Lear was responsible for conducting treatability testing to determine the stabilization formulation and developing the technical specifications for the stabilization reagents. He also developed the work plan and procedures for full-scale treatment, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data. Dr. Lear was instrumental in getting the treated soil accepted as daily cover at a local landfill, eliminated T&D costs for the project.
  • Silos 1 & 2 Stabilization Fernald, Ohio. Technical Consultant for the stabilization of 5,000 cy of uranium ore processing residue at a DOE facility. Dr. Lear provided technical consulting for the Fernald Silos 1 & 2 Remediation project, reviewed the design work by others and provided technical comments, and provided technical consulting and support on the stabilization processing during start-up and operation of the facility.
  • Willow Run Creek PCB Stabilization Washtenaw County, Michigan. Technical Lead for the in-situ stabilization of 451,000 cy of PCB-contaminated soil and sediment. Dr. Lear developed the stabilization formulation and the technical specifications for the stabilization reagents, assisted in set-up and initial operations of the stabilization system, evaluated dust control methods and assisted in the design and implementation of the dust control/treatment system, provided technical support for full-scale operations, and evaluated and monitored performance data.
  • Bayway Sludge Lagoon Stabilization Linden, New Jersey. Technical Manager for the in-situ solidification of 120,000 cy of oil sludge and tars contained in 14 lagoons and sand filter impoundments at the Sludge Lagoon Operable Unit. Dr. Lear was responsible for conducting treatability testing, developing work plans, technical procedures and technical specifications, providing technical support for the in-situ treatment, and evaluating and monitoring performance data.
  • Ash Pit Stabilization Johnston Atoll. Technical Manager for the stabilization of 36,000 cy of ash contaminated with lead on Johnston Atoll. The project involved the first CAMU issued by EPA Region IX. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents and system, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data.
  • American Creosote Soil Stabilization Jackson, Tennessee. . Technical Manager for the stabilization of 48,000 cy of soil contaminated with arsenic, polyaromatic hydrocarbons, pentachlorophenol and dioxins at a form wood preserving site. This project was the first to utilize a novel risk-based performance criteria for leachable dioxins in the treated material. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents and system, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, provided technical support for full-scale treatment, and evaluated and monitored performance data.
  • MCB Camp Pendleton DRMO Scrap Yard Stabilization Oceanside, California. Technical Manager for the stabilization of 39,000 cy of soil and sludge contaminated with explosives and metals and was the first organic stabilization project in EPA Region IX. Organic stabilization of the soil was less than 50% of the cost for bioremediation. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents and system, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data.
  • Umatilla Army Depot TNT Burial and Burn Area Stabilization Hermiston, Oregon. responsible for daily implementation and enforcement of HASP on project involving the dewatering and excavation of two ponds contaminated with lead and mercury. All excavated soils were screened, processed through a crushing plant, and loaded into rail containers for offsite disposal. Performed exposure monitoring, conducted daily inspections, and submitted required reports. Also collected Quality Assurance samples, prepared correspondence, and performed all project administrative functions.
  • Grasse River PCB Sediment Treatment Messina, New York. Technical Lead for the dewatering of PCB-contaminated sediment from the dredge stream at the Grasse River project. Dr. Lear provided technical assistance for the design and operation of the desanding and dewatering system for dredged sediment and evaluated and monitored performance date for these operations.
  • Beaumont Wastewater Impoundment Solidification Beaumont, Texas. Technical Lead for the in-situ stabilization of 550,000 cy of TPH-contaminated sludge. Dr. Lear oversaw the development of the stabilization formulation, assisted in set-up and initial operations of the stabilization system, evaluated dust control methods and assisted in the design and implementation of the dust control/treatment system, provided technical support for full-scale operations, and evaluated and monitored performance data.
  • Pollard Pond Solidification Richmond, California. Technical Lead for the development, design and operation of an on-site neutralization and stabilization process to treat 150,000 cy of waste at a former landfill located at a major northern California refinery. The waste consisted primarily of acid sludge tar (AST), dredged bay mud (DBM) and interface layer (a combination of the two). Dr. Lear was responsible for overseeing the development of the treatment process to neutralize the AST and solidify the combination of neutralized AST and the DBM. He produced final treated product that met the performance specifications, assisted in set-up and initial operations of the stabilization system, evaluated dust control methods and assisted in the design and implementation of the dust control/treatment system, provided technical support for full-scale operations, and evaluated and monitored performance data.
  • X-231B Demonstration Project Portsmouth, Ohio. Technical Lead for the demonstration of in-situ stabilization, chemical oxidation and steam stripping on soil contaminated with volatile organics, radionuclides and metals at DOE's facility. This was the first demonstration of in-situ treatment by the DOE. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data.
  • Wastewater Sludge Stabilization Flint, Michigan. Technical Lead for the stabilization of 550,000 cy of soil and sludge contaminated with metals from the on-site wastewater treatment plant. The soil and sludge were classified as F006 wastes. Dr. Lear developed the stabilization formula and the technical specifications for the stabilization reagents including an innovative treatment for sludge contaminated with an organo-nickel complex, assisted in set-up and initial operation of the stabilization system, oversaw on-site pilot testing, and evaluated and monitored performance data.

Publications

  • P.R. Lear, C. Archibald, and C. Brown. "On-Site Treatment of Soils with Leachable Mercury During Mine Remediation Projects." Proceedings of the Bettering Environmental Stewardship and Technology (BEST) 2016 Conference, Whistler, British Columbia, Canada, 2016.
  • P.R. Lear. "ISS: Does The Choice of Equipment Matter." Proceedings of the Tenth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Palm Springs, CA, 2016.
  • P.R. Lear. "Recent ISS Activities for the Treatment of Chlorinated Organics." Proceedings of the Tenth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Palm Springs, CA, 2016.
  • P.R. Lear. "In-Situ Stabilization at MGP Site A Cost Effective and Practical Remedial Alternative." Midwest Energy Association Environmental Learning Conference. Colorado Springs, CO, 2015.
  • P.R. Lear. "Recent ISS Activities for the Treatment of Organics." Proceedings of the 14th Remediation Technology Symposium.. Banff, Alberta, Canada, 2015.
  • P.R. Lear. "Soil Mixing for In-Situ Stabilization Does the Choice of Equipment Matter?" Proceedings of the Bettering Environmental Stewardship and Technology (BEST) 2015 Conference, Whistler, British Columbia, Canada, 2015.
  • P.R. Lear. "ISS: Does the Choice of Equipment Matter?" Proceedings of the Fifth International Symposium and Exhibition on the Remediation of Manufactured Gas Plant Sites (MGP 2015). Providence, RI, 2015.
  • P.R. Lear. "Leachability Criteria for ISS at MGP Sites." Proceedings of the Fifth International Symposium and Exhibition on the Remediation of Manufactured Gas Plant Sites (MGP 2013). Savannah, GA, 2013.
  • P.R. Lear. "Developing Leachability Criteria for In-Situ Stabilization at MGP Sites." Proceedings of the First RE3 Conference. Atlantic City, NJ, 2013.
  • P.R. Lear. "Stabilization of Metals, Explosives, and Propellants from Former Army Ammunition Plants." Proceedings of the Eighth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Monterey, CA, 2012.
  • P.R. Lear. "Stabilization of Refinery Stormwater Sediments to Meet Groundwater Standards." Proceedings of the Eighth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Monterey, CA, 2012.
  • P.R. Lear. "Stabilization of Pesticides in Soils and Sediments." Proceedings of the Eighth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Monterey, CA, 2012.
  • P.R. Lear. "Health-Based Leaching Criteria for the ISS Treatment of Contaminated Soils at Former MGP Sites." Proceedings of the Fourth International Symposium and Exhibition on the Remediation of Manufactured Gas Plant Sites (MGP 2012). Chicago, IL, 2012.
  • Wolfenden, L. Saska, and P.R. Lear. "Test Program for Selecting Technologies for Groundwater Treatment at a Hazardous Waste Site." Proceedings of the Fifth International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Monterey, CA, 2008.
  • P.R. Lear, R.T. Greene, J.A. Isham, R. Martin, and C.J. Norton. "Laboratory Demonstration of Radiological Decontaminated Using TechXtract RadPro." Proceedings of the WM'07 Conference. Tucson, AZ, 2007.

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