Services


Air Quality
CK’s Air Quality Permitting and Compliance team consists of almost 40 experienced professionals across four offices. We are experts in navigating the ever-increasingly complex and evolving air quality regulations. We work closely with our clients to interpret and implement these intricate requirements, ensuring worry-free air permitting and compliance. Our team of former industry staff are adept at preparing sites for regulatory inspections and helping to respond to findings or enforcement proceedings. We enjoy an excellent reputation with the permitting agencies, and our relationships can help expedite our clients’ immediate needs. For clients where “first to market” can be critical to the success of a project, CK’s ability to write quality permit applications and facilitate their review with regulatory staff helps ensure this success.
Our Air Expertise includes:
- Title V (Part 70) Air Permit Application Preparation
- Prevention of Significant Deterioration (PSD) Permit Application Preparation
- Nonattainment New Source Review Permit Application Preparation
- Ambient Air Dispersion Modeling for NAAQS and Air Toxics Standards
- State (Minor Source) Air Permitting
- Greenhouse Gas (GHG) Reporting
- Environmental Assessment Statements (EAS) (IT Decision Response)
- Offshore AQS Emission Evaluations
- Compliance Plans and Documentation
- Semiannual and Annual Compliance Reporting and Certifications
- Auditing
- Regulatory Determinations
- Stack Testing Assistance
- Risk Management Program Development (40 CFR Part 68)
- Litigation Support
- SARA 311, 312 & 313 Reporting
- Benzene Waste Operations NESHAP (BWON) Program Evaluations and Compliance
- Annual Emissions Inventory Reporting
- Environmental Justice Evaluations
Ecological
CK offers cost-effective approaches designed to conserve resources, promote sustainability, and ensure compliance with regulations, including the Clean Water Act, state oil and gas regulations, OPA 90, FERC, NRDA, and more. From new developments to existing assets, we support master plans and policy development nationwide.
Our Ecological Expertise Includes:
- Waters of the US (WOTUS) Delineations & Assessments
- USACE General & Nationwide Permitting
- USACE Standard (i.e., Individual) Permitting
- Threatened & Endangered Species
- Protected Species Assessments & Surveys
- LDENR Coastal Use Permitting
- Greenfield Facility Investigations & Permitting
- Biodiversity Baselines & Adaptive Management
- Compensatory Mitigation & Restoration
- Natural Resource Damage Assessments (NRDA)
- Shoreline Cleanup Assessment Techniques (SCAT)
- Environmental Impact Assessment (EIA)
- Environmental Impact Statement (EIS)
- Section 404 & Section 10 Permitting
- Section 408 Permissions
- Levee District Letter of No Objection (LONO)
- Critical Issues Analysis (CIA)
- Desktop WOTUS/Wetland Assessment
- Cultural/Archeological Resources
- Environmental Due Diligence
- Environmental Permitting and Compliance
- Environmental Risk Evaluation
- Habitat Assessments
- Site and Route Evaluation
- Species Assessments
- Biological Assessment
- Environmental Compliance
- Environmental Studies


Risk, Remediation, & Waste
CK’s multidisciplinary team of geologists, toxicologists, engineers, and scientists specialize in addressing contaminated property issues, from pre-acquisition through remediation and redevelopment. We understand the intricate relationship between environmental risks, regulatory obligations, and economic impacts, and we tailor practical approaches to your needs.
Whether identifying potential liabilities during site acquisition or assessing and remediating chemical releases at existing facilities, CK provides actionable, risk-based cleanup alternatives. We also offer expert support in disputes involving contamination and exposure.
Our Risk, Remediation & Waste Management Expertise includes:
- Consultation on Release Sites subject to Risk-Based Corrective Action Programs
- RECAP (Risk Evaluation/Corrective Action Program)
- TRRP (Texas Risk Reduction Program)
- Soil & Groundwater Assessments
- Groundwater Modeling & Hydrogeologic Studies
- Solid Waste Master Plans
- Landfill Siting & Design
- Solid & Hazardous Waste Facility Permitting & Compliance
- Litigation Support
- Transactional Due Diligence for Commercial and Industrial Assets
- Mangement of Commerical Real Estate Due Diligence Programs
- Brownfields & voluntary remediation
- Solid waste planning
- Storage tanks & spill prevention
- Adaptive Management
- Fate and Transport Models
- Forensic Investigations
- Solid Waste Disposal
- Spill Response
- Waste Management
- Phase I And II Site Assessments
- Permitting and Compliance
- Remedial Planning and Coordination
- Solid and Hazardous Waste
- Hazard Mitigation Planning
Water Quality
With over 30 years of leadership in water permitting and compliance, CK remains a trusted partner in tackling complex water quality challenges. We were the first U.S. firm to secure an NPDES/LPDES permit for a merchant power plant under the Clean Water Act 316(b) regulations and continue to lead innovative solutions in water quality management.
Our team excels in NPDES permitting, compliance strategies, and toxicity reduction evaluations.
Our Water expertise includes:
- Louisiana/Texas/National Pollutant Discharge Elimination System Permitting & Compliance Support
- Compliance Plans (Spill Prevention, Control and Countermeasure [SPCC], Storm Water Pollution Prevention [SWPP], Best Management Plans [BMP], Facility Response Plans [FRP], etc.)
- 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
- Offshore NPDES Program Management
- Water quality monitoring
- Water Quality Management
- Industrial Wastewater Treatment
- Hydrogeologic Studies

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Litigation Support
CK Associates (CK) maintains a staff of experienced, credentialed professionals with expertise in biology, chemistry, engineering, geology, hydrogeology, toxicology, and wetlands ecology. We provide technical support for site investigations, remediation design and implementation, human health risk assessments, ecological risk assessments, wetlands delineation, habitat assessments, endangered species assessments, Natural Resource Damage Assessments (NRDA), and regulatory issues pertaining to the Clean Air Act (CAA), Clean Water Act (CWA), Resource Conservation and Recovery Act (RCRA), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Endangered Species Act, and Oil Pollution Act (OPA).
CK experts are supported by over 75 technical staff with extensive knowledge and experience in environmental science and engineering, along with expertise in the application of geospatial tools to environmental projects. CK is an employee‐owned, multimedia environmental consulting firm that has been serving the needs of industry across the United States since 1981. Resumes and references for CK experts are available upon request.
Drone & GIS
CK utilizes cutting edge drone technologies using Small Unmanned Aircraft Systems (UAS) to assist clients in solving complex environmental issues. UAS technology offers a rapid, high quality remote sensing data acquisition platform suitable for numerous applications including aerial photography/videography, real-time inspection, and 3-D mapping. Contact one of our FAA 14CFR Part 107 Certified UAS Pilots to see how CK can provide UAS technology to enhance your project or facility needs.
Our Drone Services complement CK’s main service areas with Aerial Photography and Video Capture, Orthomosaic Imagery, Coastal Planning and Erosion Monitoring, Construction Monitoring Activities (Pre, During and Post Construction), Emergency Response, Phase I Delineations, Litigation Support Videography, Environmental Compliance, Drainage Assessment / Mapping, and Topographic Mapping.
