CalGEM & Regional Water Board · Since 1999

California Class II UIC Permitting & Compliance

Numeric Solutions prepares technically defensible Underground Injection Control applications and project-by-project reviews that satisfy CalGEM and Regional Water Board requirements—reducing operator cost and approval time. Founded in Ventura in 1999.

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Full-service delivery

From application to approval

One team carrying every UIC project element—geology, engineering, the injection plan, and the regulatory strategy to get it through review.

Geologic Study

Detailed geologic framework models—structure and isopach maps, cross sections, type logs, and reservoir and fluid-property analysis—proving injection-zone confinement and USDW protection.

Engineering & AOR

Area of Review (AOR) and Zone of Endangering Influence (ZEI) determination, injection-pressure and MASP modeling, wellbore diagram generation, and P&A and offset-well analysis confirming zonal isolation.

Injection Plan

Project purpose, volumes, facility and flowline mapping, and water-well review—assembled into the complete CalGEM / Water Board application package.

Regulatory Strategy

We anticipate and resolve agency objections, drawing on long-standing CalGEM relationships to move projects through review efficiently.

Track record

Statewide Class II experience

Projects large and small—from a single disposal well to fields with more than fifty injectors—across every major California oil & gas basin.

60+

California Class II UIC projects permitted or reviewed since the 2019 regulations update

25+

operators served across the Ventura, Santa Maria, San Joaquin, Salinas, and Los Angeles basins

1–50+

injection wells per project—single-well disposal to large water and steam floods

project types: water disposal, waterflood, cyclic steam, steam flood, gas storage, and gas pressure maintenance

Map of California showing Numeric Solutions Class II UIC project areas

Each dot marks a field with a Numeric Class II UIC project

Beyond Class II, Numeric has authored Class VI (15+), Class I, and aquifer-exemption applications — depth across the full UIC spectrum.

How we work

A predictable path to a permitted project

Scope & data review

We assess the field, wells, and prior submittals to define exactly what the application requires.

Technical studies

Geologic framework, AOR and pressure modeling, and the injection plan—built to withstand review.

Application assembly

A complete, internally consistent CalGEM / Water Board package, ready to submit.

Review & approval

We carry the project through agency review and requests for additional data to approval.

Who you work with

Senior practitioners, not handoffs

John Harris

President

Over 25 years in oil & gas E&P, reserves, and energy finance. Founder of Numeric (1999); leads the firm’s asset-evaluation and permitting practice.

Eric White, PG

Vice President / Geologist

California Professional Geologist (#9675) with 13+ years across oil & gas and CCS. Leads Numeric’s Class II UIC practice—geologic modeling, AOR/ZEI analysis, and application authorship—with 50+ CalGEM project reviews overseen.

Paul T. Codd, PE

Vice President / Engineering

Professional Engineer with 35+ years of oil & gas operations experience. Directs the injection, pressure, and facility engineering behind Numeric’s UIC submittals.