100+ Free CHMM Practice Questions

The IHMM CHMM exam contains 140 multiple-choice questions with four answer options per question. The exam is completed in 3 hours. Some questions may be unscored pilot items used to validate future exam forms, but candidates cannot distinguish them during the test.

The CHMM uses scaled scoring from 0 to 1,000. A minimum scaled score of 700 is required to pass. The scaled score accounts for slight variations in difficulty across exam forms. Your raw score (questions answered correctly) is converted to a scaled score before results are reported.

CHMM candidates must hold a bachelor's degree or higher from an accredited college or university plus at least 4 years of professional-level work experience in hazardous materials management. International degrees require an equivalency evaluation from a NACES-approved organization. Third-party employment verification is required.

The CHMM (Certified Hazardous Materials Manager) is IHMM's senior management-level credential requiring a bachelor's degree plus 4 years of management-scope experience. The CHMP (Certified Hazardous Materials Practitioner) is the practitioner-level credential focused on hands-on technical work, with lower education and experience requirements. CHMM holders are also recognized as EPA Environmental Professionals under 40 CFR §312.10 — enabling them to sign Phase I ESA reports for CERCLA All Appropriate Inquiries.

The CHMM costs $175 (nonrefundable application fee) plus $360 (exam fee) for a total initial cost of $535. After passing, an annual certification maintenance fee of $160 applies. Retake fees are $160 for the 2nd and 3rd attempts within a 12-month period. A $100 rescheduling fee applies if the appointment is changed within 72 hours.

CHMM certification is valid for 5 years. Recertification requires 200 Certification Maintenance Points (CMPs): 100 CMPs from professional work experience in hazardous materials management, and 100 CMPs from professional development activities such as continuing education, conferences, publications, teaching, or IHMM volunteer service. Failure to earn 200 CMPs requires retaking the exam ($360 fee).

The CHMM is a management-level exam covering 12 domains. Heavily tested areas include RCRA (hazardous waste generator categories, manifests, LDRs, TSDFs), CERCLA/SARA (PRP liability, reportable quantities, risk assessment), EPCRA (Sections 302-313), DOT 49 CFR (hazard classes, placarding, shipping papers), OSHA HAZWOPER (1910.120) and PSM (1910.119), and Clean Air/Water Act compliance. Expect scenario-based management-level application questions.

Yes. EPA recognizes the CHMM credential under 40 CFR §312.10 as qualifying holders as 'Environmental Professionals' for purposes of CERCLA All Appropriate Inquiries (Phase I Environmental Site Assessments). This recognition allows CHMMs to sign and supervise Phase I ESA reports — a significant professional privilege not held by practitioners without this credential.