Interested in a Compliance Management Solution? Watch our quick explainer video to see how we can help.

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Air emissions testing & monitoring

Our emissions testing professionals analyze, evaluate, and monitor process & point source emissions from thousands of operations in various industries around the world.

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Continuous Emissions Systems & Service

Mostardi Platt’s emissions monitoring expertise extends beyond just hardware and software to full service regulatory support in the emissions monitoring realm.

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Environmental Health & Safety (EH&S)

From EHS auditing and training to on-site/ongoing support services, Mostardi Platt has the expertise and experience to provide the turn-key services needed to provide business solutions to your organization.

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Environmental Assessment & Remediation

Mostardi Platt is well equipped to handle all of your company’s environmental assessment needs from initial due diligence evaluations all the way through to site characterization and closure.

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Permitting & Consulting

Our experienced professionals provide expertise in the identification of applicable regulations, preparation and submittal of permit applications, conceptual air quality control system design, dispersion modeling studies, noise impact analysis, and regulatory agency liaison and negotiation.

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Compliance Management Process

Mostardi Platt’s CMP® is a secure, cloud-based EHS Compliance Management tool designed to generate and monitor a comprehensive task schedule to meet the unique needs of each individual client.

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Regulatory Support

Mostardi Platt’s emissions monitoring expertise extends beyond just hardware and software to full service regulatory support in the emissions monitoring realm. We routinely offer these regulatory support services on a contract or an as-needed basis:

  • Continuous Emissions Monitoring Systems (CEMS)/Continuous Opacity Monitoring Systems (COMS) Standard Operating Procedures
  • Reporting Services – Quarterly CEMS Reports, Electronic Data Reporting (EDR), Other Periodic or One-Time Reporting Events
  • Quality Assurance/Quality Control (QA/QC) Manual and Monitoring Plan Preparation and Updates
  • Monitoring System Audits – Operational, Maintenance, and Reporting


Mostardi Platt’s engineers and technicians maintain and repair monitoring systems supplied by any vendor to ensure maximum availability for our clients. The customized on-site services that we provide include complete system operation and maintenance, periodic routine maintenance, quarterly audits, and emergency maintenance. We also provide in-house bench testing and repair services.

  • Complete System Operation and Maintenance
  • Quarterly Quality Assurance Audits (Linearity Testing, Cylinder Gas Audits, Opacity Audits, Relative Accuracy Audits, etc.)
  • Routine System Maintenance per Manufacturers’ Recommendations
  • Emergency Maintenance/Repairs and in-house Gas Analyzer Repairs for Thermo Fisher (c series, i series, and iQ series), California Analytical, Servomex, and Teledyne Monitor Labs (Sensor E)
  • Performance Specification Testing (Calibration Error and Drift, Cycle Response Time, Linearity, etc.)
  • Flow Monitor Calibration/Curve Development

Continuous Emissions Systems & Service

Mostardi Platt stocks a full range of CEMS spare/replacement parts and consumables critical to operating monitoring systems of all makes and models. We are committed to providing the highest quality and most suitable parts to our clients for each and every installation. Rather than offering a part that will provide only a short-term repair, we focus on solving any past issues as well as avoiding any potential problems by providing the right part for the right application.

  • Original Factory Parts for most vendors
  • Second Sourcing for Consumables
  • Same-day Shipping Available – Stocking Arrangements Available
  • Rental Analyzers, System Components, Temporary Systems

System Integration

Mostardi Platt assists clients in meeting their regulatory and industrial requirements by engineering, designing, integrating, and installing turn-key Continuous Emissions Monitoring Systems (CEMS). For those clients with existing CEMS, we provide upgrade options to address a full range of issues such as new regulatory requirements, unsupported equipment, underperforming equipment, aging system components, etc. Our CEMS specialists possess years of experience in handling:

  • Complete CEMS Integration – straight-extractive, dilution-extractive, and in-situ systems
  • Continuous Opacity Monitoring Systems (COMS)
  • Ambient Air Quality and Meteorological Monitoring Systems
  • Data Acquisition and Handling Systems (DAHS)
  • Emissions Analyzers (from all vendors)

Alternative Monitoring

Mostardi Platt was responsible for the development of the first Predictive Emissions Monitoring System (PEMS) to gain regulatory approval. Since the introduction of this first system in 1987, Mostardi Platt has become well-known in the industry for its development and implementation of both predictive and parametric emissions monitoring systems. We offer a full range of alternative monitoring systems to fulfill the many regulatory requirements faced by our clients:

  • Performance Specification 16 (PS-16) Compliant PEMS for Subpart Db Boilers and Other Sources
  • Parametric Monitoring Systems
  • Case-by-Case Regulatory Approval Alternative Monitoring Systems
  • Compliance Assurance Monitoring Systems, including Electro Static Precipitator (ESP) Modeling


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