ABOUT US

W

e began our business assisting clients with water permitting and compliance, so it’s no surprise that over 30 years later our wastewater engineers and scientists continue to lead the industry.

We are consistently selected to work on the most challenging NPDES permit issues in EPA Region VI. In fact, we were the first environmental firm in the U.S. to obtain an NPDES/LPDES permit for a merchant power plant under Phase I of the Clean Water Act 316(b) regulations.

We have successfully completed numerous Toxicity Reduction Evaluations (TREs) including developing the treatment solutions to address toxicity sources.

Services

  • NPDES Permitting & Compliance Support
  • Compliance Plans
  • Water Quality Standards Screening
  • Modeling (Water Quality, Mixing Zone, Hydraulic)
  • Toxicity Reduction Evaluations (TREs)
  • Water-Effect Ratio Studies
  • Use Attainability Studies
  • Data Management & Reporting
  • 316(b) Evaluations & Comprehensive Demonstration Studies
  • Storm Water/Wastewater Treatment
  • Drainage Studies & Stream Surveys
  • Enforcement/Litigation Support

WATER QUALITY

W

e began our business assisting clients with water permitting and compliance, so it’s no surprise that over 30 years later our wastewater engineers and scientists continue to lead the industry.

We are consistently selected to work on the most challenging NPDES permit issues in EPA Region VI. In fact, we were the first environmental firm in the U.S. to obtain an NPDES/LPDES permit for a merchant power plant under Phase I of the Clean Water Act 316(b) regulations.

We have successfully completed numerous Toxicity Reduction Evaluations (TREs) including developing the treatment solutions to address toxicity sources.

Services

  • NPDES Permitting & Compliance Support
  • Compliance Plans
  • Water Quality Standards Screening
  • Modeling (Water Quality, Mixing Zone, Hydraulic)
  • Toxicity Reduction Evaluations (TREs)
  • Water-Effect Ratio Studies
  • Use Attainability Studies
  • Data Management & Reporting
  • 316(b) Evaluations & Comprehensive Demonstration Studies
  • Storm Water/Wastewater Treatment
  • Drainage Studies & Stream Surveys
  • Enforcement/Litigation Support

OUR TEAM

Chad Cristina, P.E.

Water Quality Program Manager

DIRECT: 225-923-6923
EMAIL: Chad.Cristina@c-ka.com
BRIEF BIO

Dr. Cristina is a professional engineer and the Program Manager of CK’s Water Quality Program. His work areas focus on Clean Water Act permitting and compliance. Dr. Cristina has developed expertise in 316(b) cooling water intakes compliance in both the onshore and offshore arenas and is currently developing 316(b) permitting submittals for both arenas. Dr. Cristina is heavily involved in CK’s Toxicity Reduction Evaluation (TRE) projects and is currently managing two industrial TRE efforts. Dr. Cristina also specializes in industrial wastewater treatment and statistical process control to reduce the quantities of toxic effluents, identified through TRE and other investigations, from entering receiving waters.

Doug LaBar

Senior Environmental Scientist

DIRECT: 225-923-6920
EMAIL: Doug.LaBar@c-ka.com
BRIEF BIO

Mr. LaBar is a recognized expert in National Pollutant Discharge Elimination (NPDES)/Louisiana Pollutant Discharge Elimination System (LPDES) permitting and compliance. He is involved in all phases of NPDES/LPDES permitting including preparation of permit applications and resolving complex permitting and compliance issues. He has a strong regulatory background in water quality including expertise with state and federal water quality regulations, receiving stream assessments, drainage studies, wastewater treatment, and application of water quality standards. Mr. LaBar is also a recognized expert in 316(b) of the Clean Water Act. He is experienced in 316(b) permitting and regulatory applicability determinations, data collection and evaluations, biological assessments, and engineering feasibility studies and technology evaluations.

David Jessup, P.E.

Senior Environmental Engineer

DIRECT: 225-923-6936
EMAIL: David.Jessup@c-ka.com
BRIEF BIO

Mr. Jessup has 39 years of experience in civil/environmental engineering specializing in water quality permitting and planning. His water quality planning and permitting experience includes: LPDES/NPDES planning and permitting; receiving stream assessments; feasibility/alternative studies; compliance/enforcement; antidegradation; antibacksliding; reasonable potential analysis; TMDLs; technology-based and water quality-based effluent limitations (TBEL/WQBEL); WET testing/screening; diffusers; compliance schedules; stormwater permitting and compliance (SWPPPs, SPCC plans, construction, etc.). Additionally, he has successfully conducted site selection, fatal flaw screening, groundwater investigations, feasibility studies and remediation under the CWA, RCRA, HSWA, CERCLA and SARA involving solid and hazardous waste.

Jeff Ratcliff

Senior Environmental Scientist

DIRECT: 225-923-6939
EMAIL: Jeff.Ratcliff@c-ka.com
BRIEF BIO

Mr. Ratcliff has over 16 years of multi-media environmental regulatory compliance experience with a primary focus on National Pollutant Discharge Elimination (NPDES)/Louisiana Pollutant Discharge Elimination System (LPDES) permitting and compliance. While at CK, Mr. Ratcliff has focused on industrial wastewater/storm water issues and his work is primarily comprised of Clean Water Act (CWA) permitting/studies, enforcement/compliance support, and compliance plan development.  He has also performed consulting and field services under the RCRA, EPCRA, and CAA programs.

Alex Sheffield, P.E.

Senior Environmental Engineer

DIRECT: 225-923-6922
EMAIL: Alex.Sheffield@c-ka.com
BRIEF BIO

As a Senior Environmental Engineer with CK Associates (engineering services provided through C-K Associates, LLC), Mr. Sheffield has focused on industrial wastewater/storm water issues and his work is primarily comprised of Clean Water Act (CWA) permitting/studies, enforcement/compliance support, and compliance plan development. He has also performed consulting and field services under the RCRA, CERCLA, and CAA programs.

James Durbin

Senior Environmental Scientist

DIRECT: 225-923-6925
EMAIL: James.Durbin@c-ka.com
BRIEF BIO

Mr. Durbin, a Sr. Environmental Scientist with CK’s Water Quality Program, leads, directs and manages its offshore oil and gas E&P permitting and compliance team, which includes NPDES Program Management services. He has over 22 years of experience in managing and conducting multi-disciplined environmental projects for offshore oil and gas operations which, coupled with his knowledge of offshore oil and gas processes, enables him to understand and solve the complex challenges this industry faces.
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Jesse Bertrand

Environmental Scientist

DIRECT: 337-313-5047
EMAIL: Jesse.Bertrand@c-ka.com
BRIEF BIO

Mr. Bertrand is an Environmental Scientist with CK’s Water Quality Team. He has experience in the application of environmental issues in the petrochemical, petroleum refining and manufacturing industry as well as the private and public sectors. Mr. Bertrand has multi-media experience including water quality, air quality, ecology, risk assessment, waste management, infrastructure integrity, potable water and spill response. He has drafted regulatory documents for agency and client use.

David Hawley, P.E.

Environmental Engineer

DIRECT: 225-923-6480
EMAIL: David.Hawley@c-ka.com
BRIEF BIO

Mr. Hawley is a professional engineer with CK’s Water Quality Team.  He is a Professional Engineer with registrations in Louisiana, Kansas, Texas and Mississippi. Mr. Hawley has experience with multi-media environmental projects including site investigation and remediation, environmental compliance, and construction management, and water treatment. His technical focus is groundwater remediation system design, implementation, and operation.