★ DEKON Project Case Study · January 2025
Category II Asbestos Flooring Removal Under EPA Region 9 Oversight
Federal Subcontract · Northwestern NM Region · 5-Day Project · NESHAP Compliant
Project Overview
DEKON Environmental Services was engaged as a subcontractor under federal prime oversight (U.S. EPA Region 9) to remove approximately 630 square feet of asbestos-containing tile, mastic, and underlayment from a structure in the northwestern New Mexico region.
Pre-mobilization, DEKON processed the required NESHAP notification and overnighted it to the U.S. EPA Region 9 office in San Francisco — meeting the regulatory pre-notification window required for Category II non-friable asbestos abatement.
The project was executed by a two-person AHERA-certified crew using full containment, negative air pressure, two-stage decontamination, and two-stage bag-out protocols. Final clearance air sampling confirmed all asbestos hazards were removed below regulatory thresholds. Waste was manifested through a national hazardous waste hauler for licensed ACM disposal.
Project Information
Project Type
Category II Non-Friable Asbestos Flooring Removal
Location
Northwestern New Mexico region — federal subcontract
Oversight
U.S. EPA Region 9 via federal prime contracting
Scope
~630 sq ft asbestos-containing tile, mastic, and underlayment removal
Duration
5 field days (January 2025)
Regulatory
EPA NESHAP 40 CFR Part 61 Subpart M · OSHA 29 CFR 1926.1101 · AHERA · NM NESHAP
Outcome
Zero incidents · clearance air samples passed first attempt · manifested disposal complete
Daily Execution Timeline
Pre-mob ~3 weeks out
NESHAP regulatory notification. Notification processed and overnighted to the U.S. EPA Region 9 office in San Francisco. 10-day pre-notification window confirmed compliant.
Day 1
Mobilization & setup. Crew on-site. Site-Specific Health and Safety Plan and JSA reviewed. Critical barriers installed. Two-stage decontamination room and two-stage bag-out room erected. Negative air machine staged.
Day 2
Removal Phase A. JSA reviewed. Removal of flooring and underlayment commenced. Approximately 300 sq ft removed and double-bagged with 6-mil polyethylene per AHERA protocol.
Day 3
Removal Phase B + bag-out. JSA reviewed. Remaining ~330 sq ft tile, mastic, and underlayment removed and double-bagged. Bag-out phase initiated through two-stage barrier system. All waste staged in secondary containment.
Day 4
Detail clean & clearance sampling. Detail phase completed (HEPA, wet wipe, visual inspection). Two air pumps deployed, calibrated to 9 lpm against external calibrated manometer. Sample run time 2.5 hours for required 1,350 mL clearance volume.
Day 5
Demobilization & manifest. Containment dismantled. Final bagging and equipment load-out. All ACM waste labeled and manifested for transport to a licensed ACM disposal facility.
Scope of Work Delivered
- NESHAP regulatory notification processed and submitted to U.S. EPA Region 9 within required pre-notification window
- Site-Specific Health and Safety Plan (HASP) and daily JSA developed and reviewed with crew each shift
- Critical barrier installation — full containment with poly sheeting around the work area
- Two-stage decontamination room & two-stage bag-out room erected per AHERA/OSHA requirements
- Negative air machine with HEPA filtration maintaining inward airflow throughout abatement
- Wet-method removal of 630 sq ft tile, mastic, and underlayment with double-bagging in 6-mil poly
- Clearance air sampling — 2 calibrated pumps at 9 lpm, 1,350 mL sample volume, results below regulatory thresholds
- Waste manifesting to a licensed ACM disposal facility with full chain-of-custody documented
Why This Project Demonstrates DEKON's Capabilities
This project is a clean example of DEKON's federal-grade asbestos abatement workflow: regulatory notification, full engineering controls, AHERA-certified personnel, calibrated clearance sampling, and licensed waste disposition — all executed under EPA Region 9 oversight through a federal prime subcontract.
It closed on schedule, with zero incidents, and clearance air samples passed on the first attempt. It represents the kind of repeatable, documented, audit-ready delivery DEKON provides on every task order under federal subcontract.
★ Project Outcome
"Asbestos hazards properly removed and mitigated — confirmation air samples provide clear proof of compliance."
Zero Incidents·Clearance Passed First Attempt·EPA Region 9 Notified & Closed