Western Environmental Services
Services
Services estimated based on license classification. Claimed businesses can customize their service list.
About the D40 — D40 License
A D40 (D40) licensed contractor in California is authorized to perform specialized work in their trade area. California's Contractors State License Board (CSLB) requires contractors in this classification to meet education, experience, and examination requirements before receiving their license. When hiring a D40 contractor, always verify their license is active and in CLEAR status, confirm they carry adequate insurance, and get a detailed written contract before work begins. Licensed contractors must maintain a $25,000 contractor bond and comply with all applicable building codes and regulations.
About the HAZ — Hazardous Substance Removal License
The HAZ (Hazardous Substance Removal) license covers the removal, remediation, and disposal of hazardous materials including lead paint, contaminated soil, underground storage tanks, and other environmental contaminants. This is a critical environmental and public health trade regulated by multiple state and federal agencies including Cal/EPA, DTSC, and Cal/OSHA. HAZ contractors must follow strict containment, handling, and disposal protocols to protect workers, the public, and the environment. California has some of the most stringent hazardous material regulations in the nation. When hiring a HAZ contractor, verify all required certifications, ensure they have experience with your specific type of contamination, and confirm they use licensed disposal facilities. Documentation and proper chain of custody for hazardous materials are essential.
💡 Tips for Hiring a D40 Contractor
- Always verify the contractor license is active on the CSLB website
- Get at least three written estimates before making a decision
- Never pay more than 10% or $1,000 down (whichever is less) per California law
- Get a detailed written contract specifying scope, timeline, and payment terms
- Verify the contractor carries general liability and workers compensation insurance
✅ Verify This License
Always verify contractor licensing directly with the Contractors State License Board (CSLB) before hiring. You can look up license #922840 to confirm it is active and check for any complaints or disciplinary actions.
Check on CSLB.ca.gov →🏢 Are you Western Environmental Services?
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Claim This Page →Frequently Asked Questions
Do I need a licensed D40 contractor in California?
Yes. California law requires a licensed contractor for any d40 work valued at $500 or more. Licensed contractors must pass exams, maintain bonding, and carry insurance. Hiring unlicensed contractors puts you at risk.
What does a D40 license cover?
A D40 (D40) license authorizes the contractor to perform specialized d40 work in California. The specific scope is defined by the CSLB. Verify the license covers the work you need before hiring.
What does a HAZ license cover?
A HAZ license covers the removal, remediation, and disposal of hazardous materials including lead, contaminated soil, underground storage tanks, and environmental contaminants. It requires compliance with Cal/EPA, DTSC, and Cal/OSHA regulations.
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