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Road Construction

Industrial Hygiene Consulting Services

Advancing Safer and Healthier Work Environments


Delta Bay Consultants is a DBE-certified (minority-owned) occupational/environmental health & safety consulting firm based in Northern California. We provide comprehensive Industrial Hygiene services, delivering customized solutions that:

  • Promote employee health, safety, and comfort

  • Increase worker productivity

  • Satisfy regulatory requirements

  • Minimize company risk

  • Enhance the overall working environment

  • Ultimately raise the bottom line

All Occupational Health & Safety and Litigation Support services are provided by a Certified Industrial Hygienist (CIH)—certified by the Board for Global EHS Credentialing (formerly the American Board of Industrial Hygiene).





Comprehensive industrial hygiene consulting, involving exposure/risk investigations and programs to identify, mitigate, and control workplace and site hazards and stressors. Services include indoor air quality investigations; air and surface contaminant sampling; noise monitoring; chemical, physical, and biological hazard assessments; evaluations of engineering & administrative controls, PPE, and work practices; sampling plans & monitoring strategies; contaminant & hazard control systems; compliance audits; and document peer review.


Occupational health & safety training, programs, and plans on an extensive range of industrial hygiene topics—including Illness & Injury Prevention; Hazard Communication; Emergency Response; Respiratory Protection; Confined Space Safety; PPE; Hearing Conservation; Lab Safety; Material Handling & Storage; Bloodborne Pathogens; Fire Prevention; Lead and Asbestos Compliance; COVID-19; Valley Fever; and Ergonomics.


On-site assessments of work practices, hygiene, and ventilation effectiveness with regard to COVID-19 exposures in the workplace. Services also include air and surface sampling for viral contamination, the development of COVID-19 Compliance Plans (which ensure regulatory compliance with Cal/OSHA and the California Department of Public Health), and employee health & safety training. 


Identification, control, and mitigation of hazards related to construction industry projects involving roadways, bridges, dams, tunnels, commercial buildings, utilities, and industrial facilities. Services include the development of regulatory agency-required public works plans—e.g., Lead Compliance Plans, Asbestos Compliance Plans, Health & Safety Plans, Dust Control Plans, and Public Safety Plans—as well as air, soil, noise, and heat stress monitoring; field work oversight; on-site safety training, and ergonomics assessments.


Expert witness testimony (via  deposition, courtroom, and legal opinion document) for legal claims related to occupational illnesses & injuries (including Workers Compensation). Other services include legal research; collection of supporting data, including contaminant sampling; document review (industrial hygiene and technical reports, medical records, lab results, chemical data); third-party reviews of previous investigations; and report writing.


Copy editing, substantive editing, and formatting of technical and scientific documentation—for the fields of engineering, geosciences, natural resources, environmental planning, transportation, energy, utilities, and industrial hygiene. Additional services include style guide and document template development; word processing; document production; résumé writing/design; marketing materials; and website content.



Team Peter

Principal Industrial Hygienist

Peter is a Certified Industrial Hygienist with over four decades of experience in occupational health & safety and public health. Peter performs air and noise monitoring; conducts indoor air quality investigations; develops industrial hygiene programs and plans; evaluates administrative & engineering controls, PPE, ergonomics, and work practices; conducts EHS training; acts as a technical resource; and provides expert witness services for illness & injury claims.​

​Peter holds an M.S. degree and has the following professional certifications: (1) CIH (#5151-CP  Board for Global EHS Credentialing®); (2) HAZWOPER (OSHA); (3) TWIC® (TSA); and (4) DBE (#45793  Caltrans).

Team Bo

Office Manager / Editor

Bo is a technical editor with 39 years of experience in editing, formatting, word processing, and producing environmental, technical, and scientific documents. Bo's editing services range from basic proofreading for grammar, spelling, punctuation, and formatting to substantive editing involving voice, structure, logic, internal consistency, and clarity of expression. Bo is a recognized expert in documentation related to the fields of engineering, geosciences, environmental planning (CEQA/NEPA), natural resources, energy, transportation, and industrial hygiene.

Bo also manages the Delta Bay Consultants office.

Team Layne.png

Virtual Assistant

Layne is a powerhouse and administrative whiz with 15+ years of experience in providing outstanding support to various companies/agencies throughout a variety of industries.


For Delta Bay Consultants, Layne is a "fixer," providing general admin and tech support, conducting online research, and performing various other clerical and organizational tasks.

Layne's professional background covers the fields of insurance, allied health, dental, retail, food service (restaurant and bakery), local government, and higher education.

Team Toby Lenny.png


Toby & Lenny (our in-house security force) keep the workplace free from intruders and hazardous materials.

As Pest Control Officer, Toby effectively eradicates all manner of vermin at our office. Utilizing his uncanny reflexes, relentless approach, and "can do" attitude, he gets the job done.

As Package Inspector with 14 years of investigative experience under his collar, Lenny maintains the safety of our office by opening and inspecting every delivery. Even the strongest packing material is no match for his power and ingenuity.

Our Track Record

Over the past 40 years, we have helped hundreds of satisfied clients:

  • Improve their workplace and site safety conditions

  • Meet (and often exceed) the regulatory criteria and guidance of OSHA, MSHA, EPA, NIOSH, ACGIH, Cal/OSHA, Cal-EPA, Caltrans, regional air quality districts and water quality boards, and local public works agencies

  • Successfully litigate occupational injury & illness claims

  • Enhance the quality of their technical and environmental documents



Mailing Address:

Delta Bay Consultants

PO Box 2385

Antioch, CA 94531

Industrial Hygiene & Legal Inquiries:

Peter Jaramillo, CIH

(925) 984-6561

Admin & Technical Editing Inquiries:

Bo Dash

(925) 457-4246



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