CITADEL ENVIRONMENTAL
Licensed Professional: Mark Kevin Drollinger
At a Glance
About CITADEL ENVIRONMENTAL
Serving Glendale and surrounding areas in California, Mark Kevin Drollinger operates as a full-service radon company. Holds dual NRPP and NRSB certifications, covering both measurement and mitigation. Services include radon measurement, radon mitigation, mitigation system installation. Dual national certification demonstrates commitment to professional standards.
Credentials & Verification
NRPP Radon Mitigation Specialist License
Licensed to design and install radon mitigation systems
Issuing Body
National Radon Proficiency Program (NRPP)
License Type
Professional License
Status
Current through October 2027Verified against NRSB, NRPP public databases · Last checked April 2026 · Report incorrect information
Contact & Location
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