New clients are as important as our existing. Referral fees offered for new clients.



 Our comprehensive approach includes a project plan with surveying/sampling, cost analysis, and contractor procurement assistance where and when required. We also offer oversight of demolition and or abatement activities to keep the project in compliance of federal and local regulations.  

  • Asbestos Surveys
  • Asbestos Operations & Maintenance (O&M) Programs
  • Invitation for Asbestos Bid Document
  • Third Party Asbestos Abatement Air Monitoring and/or Oversight



Horizon Contractors is a small business consulting company specializing in asbestos site assessments, and consulting services. Companies of all sizes and from diverse markets have turned to Horizon Contractors and its previously affiliated company Horizon Contacting, LLC to complete their Projects on time and on budget.

David Perkins founded the Horizon Companies,  and initially provided Asbestos Abatement services and general contracting services soon after in the late 90s and early 2000s.  Now under the Horizon Contractors umbrella, we can offer inspections and surveys as a single service to clients with focus on customer service to each and every one of our clients.

Through the years, Horizon has been driven to offer our clients a complete range of environmental, contracting and  consulting solutions.  We partner with our clients to understand their businesses and apply best environmental practices to complete projects in a cost-effective and timely manner. 

It is our belief that no job is too big or too small.

We embrace those projects which present challenges to other firms and maintain the goals of the client at each stage of the project. We also understand that no firm can provide all services and we maintain longstanding and trusted partnerships with companies who provide complementary offerings to complete your projects in budget and on time.


Asbestos is a mineral fiber that occurs in rock and soil. Because of its fiber strength and heat resistance asbestos has been used in a variety of building construction materials for insulation and as a fire retardant. Asbestos has also been used in a wide range of manufactured goods, mostly in building materials (roofing shingles, ceiling and floor tiles, paper products, and asbestos cement products), friction products (automobile clutch, brake, and transmission parts), heat-resistant fabrics, packaging, gaskets, and coatings.

Most uses of asbestos are not banned. A few are banned under existing regulations.

Where asbestos may be found:

  • Attic and wall insulation produced containing vermiculite
  • Vinyl floor tiles and the backing on vinyl sheet flooring and adhesives
  • Roofing and siding shingles
  • Textured paint and patching compounds used on walls and ceilings
  • Walls and floors around wood-burning stoves protected with asbestos paper, millboard, or cement sheets
  • Hot water and steam pipes coated with asbestos material or covered with an asbestos blanket or tape
  • Oil and coal furnaces and door gaskets with asbestos insulation
  • Heat-resistant fabrics
  • Automobile clutches and brakes


EPA-  Asbestos National Emissions Standards for Hazardous Air pollutants (NESHAP). You will hear a lot about NESHAP and the Federal, State and Local requirements . See the EPA link below for additional information about NESHAP and the EPA. Horizon Contractors is dedicated to educate you on these requirements/regulations and protect the contractor(s),clients and owners of every project from any potential violations that may result in fines.

STATE (Arizona)-  ADEQ's Asbestos NESHAP Program does not have any additional requirements apart from the federal standard. The ADEQ oversees come outlining counties and can assist in more local authorities when required.

LOCAL (Maricopa County)-  The Maricopa County Air Quality Department regulates all asbestos renovation and demolition within Maricopa County. That covers all demolitions and regulated renovation activities containing friable asbestos-containing material greater than or equal to 160 square feet, 260 linear feet, or 35 cubic feet. This is determined by an Asbestos Hazard Emergency Response Act (AHERA) certified asbestos building inspector prior to demolition or renovation.

Asbestos Regulations Brochure (Maricopa)-

OSHA (Federal and State)-  

Asbestos hazards are addressed in specific OSHA standards for the construction industry. These sections highlights OSHA standards, Federal Register notices (rules, proposed rules), directives (instruction to OSHA staff), letters of interpretation (official letters of interpretation of the standards), and national consensus standards related to asbestos.


Construction Industry (29 CFR 1926)

Its our intention to guide you through these standard to protect you, the workers and your project from issues that can arise related to asbestos exposure.

 Outreach Department of is an advocacy group that provides extensive information on asbestos and the diseases it causes. review the guide on why asbestos abatement should be left to professionals, a resource to help people understand why it's dangerous to remove asbestos on their own. Please take a look at it and let me know what you think!  


By invitation only