Recycling and solid waste operations generate occupational noise from shredders, balers, compactors, and transfer station operations that routinely exceed OSHA's 90 dBA PEL. Materials recovery facilities (MRFs), transfer stations, and collection vehicle operations are the primary noise-exposed environments. The sector is underinspected relative to its noise exposure profile, meaning many facilities operate without compliant hearing conservation programs. According to CDC/NIOSH, 22 million U.S. workers face hazardous occupational noise annually.
Soundtrace delivers in-house audiometric testing and noise monitoring for recycling & solid waste operations — ANSI S3.1-compliant with licensed audiologist review.
Noise Sources and TWA Ranges
| Equipment / Process | Typical Level | Typical 8-hr TWA | OSHA Status |
|---|---|---|---|
| MRF shredder / trommel screen | 95–110 dBA | 92–102 dBA | Exceeds PEL |
| Baler operations | 90–105 dBA | 88–98 dBA | At or above PEL |
| Glass crushing / processing | 95–110 dBA | 92–100 dBA | Exceeds PEL |
| Transfer station tipping floor (active) | 88–100 dBA | 85–95 dBA | At or above action level; approaches PEL |
| Collection vehicle (compaction cycle at curbside) | 88–95 dBA | 85–92 dBA | At or above action level during loading |
| Landfill heavy equipment (enclosed cab) | 78–88 dBA | 78–86 dBA | Modern enclosed cabs typically below AL; older equipment monitor |
| Sort line / picking station | 82–95 dBA | 82–92 dBA | Varies by material type and line speed |
OSHA 1910.95 Requirements
All recycling & solid waste workers at or above the 85 dBA action level must be enrolled in the full six-element OSHA 1910.95 hearing conservation program. Workers above the 90 dBA PEL require documented engineering controls assessment. See: audiometric testing for employers: complete guide.
Collection vehicle driver monitoring
Collection vehicle drivers are exposed to compaction cycle noise during loading operations. Noise levels during active compaction cycles at curbside often reach 88–95 dBA. Over a full collection shift involving hundreds of stops, the cumulative dose can approach or exceed the action level. Spot measurements at the yard do not capture the driver's actual TWA — dosimetry during a representative collection route is required.
MRF sort line workers
MRF sort line workers sort materials on fast-moving conveyor lines with background noise from shredders, blowers, and compactors. The combination of continuous line noise and periodic high-noise events from glass breaking, metal objects, and equipment impacts creates a complex noise environment where area monitoring may not accurately represent individual worker TWAs. Personal dosimetry by sort line position is preferred.
Workers’ Compensation Defense
Occupational hearing loss WC claims require complete audiometric records from hire to claim date. A pre-employment baseline audiogram is the most critical document. See: workers’ compensation for occupational hearing loss.
In-house audiometric testing for recycling & solid waste operations
Soundtrace delivers OSHA-compliant audiometric testing and noise monitoring — automated STS detection, 30-year cloud retention, and licensed audiologist supervision.
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