In-situ Remediation Services

Gregg Drilling’s Remediation Team utilizes their industry knowledge and experience to design and maintain a fleet of custom mobile injection systems. Combined with an array of pumping, tooling, and other design options, the team has the capability to accurately and cost effectively mix and inject in-situ remedial compounds and support various site remediation solutions.

High Performance Injection Rigs

Gregg’s mobile injection systems are fully self-contained and have integrated operator work stations, safety equipment, mixers, pumps, secondary containment, water storage, hydraulics, power, pressure regulators, and flow and pressure monitoring equipment. Gregg provides integrated mixing and pumping systems that can achieve injection rates between 0.1-100 GPM and can regulate injection pressure between 0-1500 PSI. With the use of Gregg’s multi-point manifolds, reagents can be delivered individually or simultaneously to up to 20 direct push points and/or injection wells.

  • Enhanced Aerobic Biodegradation
  • Enhanced Anaerobic Bioremediation
  • Enhanced Reductive Dechlorination (ERD)
  • Bioaugmentation
  • In Situ Chemical Oxidation (ISCO)
  • In Situ Chemical Reduction (ISCR)
  • In Situ Sorption/Bioremediation
  • Permeable Reactive Barrier
  • Combined Remedies
  • Groundwater Recirculation

Injection Tooling

With the use of our specially designed top-down, bottom-up, pressure-activated, or directional injection tools, we can improve vertical distribution and emplacement of remedial compounds. With the combination of our tooling and methodology, we are able to provide a cleaner and more precise injection process that allows us to place reagents within a wide range of lithologies.

Remediation compound neutrality

Proven safety performance

Unsurpassed injection expertise

Project management on all injection projects

Monitoring and reporting of critical injection parameters

Project specific Health and Safety Plans

Custom designed and dedicated injection equipment

Injection Testing to minimize risks of full-scale remediation

Integration of high resolution site characterization (HRSC) data


Gregg’s vast experience drilling throughout California and exceptional safety rating provides the confidence and trust our clients have learned to value.

Gregg constantly strives to maintain one of the highest safety ratings across California. Recently Gold Shovel Certified, Gregg is constantly improving our safety program and equipment to provide our clients the highest quality service available.

Gregg’s employees have some of the most extensive safety training available and are able to work on refineries, military sites, railroads and confined spaces.

We’re ready for you

With over 35 years experience drilling in California and surrounding states, Gregg Drilling can handle any size project. We hope to demonstrate our value through quality equipment, knowledgeable and experienced personnel and our exceptional safety standards.

Additional Services