Resources
Resources
Technical references and information to support your opacity monitoring, filter testing, and equipment needs.
Technical References
Regulatory and Standards References
EPA Performance Specification 1 — Opacity
Specifications and test procedures for continuous opacity monitoring systems at stationary sources, along with supporting EPA guidance.
EPA Quality Assurance Procedures
Includes Procedure 3, covering quality assurance requirements for continuous opacity monitoring systems at stationary sources.
EPA Method 9 — Visual Opacity
Information on visually determining the opacity of emissions from stationary sources, including field manuals and training references.
Filter Testing and Certification
Cal Check provides NIST-traceable filter testing and certification services. For questions about testing your existing filters, replacement filters, or equipment compatibility, contact us to discuss your requirements.
When contacting us, please include your monitor manufacturer and model, filter identification, and any service deadlines.
Training and Technical Support
For assistance with opacity audits, equipment use, data review, or troubleshooting, contact Cal Check to discuss your needs and available training options.
Sending Equipment for Service
Please contact us before shipping to confirm service requirements and scheduling. Include your company name, contact information, equipment identification, and a description of the requested service.
Ship To
Cal Check, Attn: Kieth Boyd, 177 Wembury Lane, Troutman, NC 28166