10.3 Health Hazards, Environmental Controls & Incident Reporting

Health Hazards, Environmental Controls & Incident Reporting

Quick Summary: General contractors must manage toxic occupational health hazards and environmental mandates alongside physical safety. This requires compliance with the Hazard Communication Standard (HazCom 2012 / GHS) featuring 16-section SDS formats, meeting the Respirable Crystalline Silica Standard (29 CFR § 1926.1153) via Table 1 engineering controls, adhering to strict OSHA Part 1904 Recordkeeping and emergency reporting triggers (8 hours for fatalities, 24 hours for hospitalizations/amputations/eye losses), and managing soil disturbance under Arkansas DEQ NPDES General Permit ARR150000.

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1. Hazard Communication Standard (29 CFR § 1926.59 / § 1910.1200)

Aligned with the United Nations' Globally Harmonized System of Classification and Labelling of Chemicals (GHS), the Hazard Communication Standard ensures that the hazards of all chemicals produced or imported are evaluated and transmitted to employers and workers.

The Five Core Elements of HazCom

Every commercial construction general contractor must establish and maintain a written HazCom program containing five required elements:

1. Written Program: A documented jobsite plan detailing how labeling, SDS distribution, and worker training are administered across all trades.
2. Chemical Inventory List: A master index of all hazardous chemicals known to be present on the jobsite (solvents, curing compounds, adhesives, fuels, compressed gases).
3. Safety Data Sheets (SDS): Maintaining physical or electronic SDS sheets that are readily accessible to workers during every work shift without barrier (cannot be locked in a trailer office or behind restricted passwords).
4. Standardized Container Labeling: Ensuring all chemical containers on site bear compliant GHS labels.
5. Employee Training: Conducting training prior to initial assignment and whenever a new chemical hazard is introduced to the worksite.

The Standardized 16-Section SDS Format

Under GHS, all chemical manufacturers must prepare Safety Data Sheets in a standardized, uniform 16-section sequence:

Standardized GHS 16-Section Safety Data Sheet Structure:
Section 1: Identification (Chemical identity, manufacturer contact, emergency phone)
Section 2: Hazard(s) Identification (GHS classification, signal words, hazard statements)
Section 3: Composition/Information on Ingredients (Chemical names, CAS numbers, percentages)
Section 4: First-Aid Measures (Symptoms, acute/delayed effects, treatment recommendations)
Section 5: Fire-Fighting Measures (Extinguishing media, specific hazards, protective gear)
Section 6: Accidental Release Measures (Containment, spill cleanup, personal precautions)
Section 7: Handling and Storage (Safe handling practices, incompatible materials)
Section 8: Exposure Controls/Personal Protection (OSHA PELs, ACGIH TLVs, engineering controls, PPE)
Section 9: Physical and Chemical Properties (Appearance, odor, flash point, vapor density)
Section 10: Stability and Reactivity (Chemical stability, hazardous decomposition products)
Section 11: Toxicological Information (Routes of exposure, acute/chronic toxicity, carcinogenicity)
Section 12: Ecological Information (Non-mandatory EPA environmental impact)
Section 13: Disposal Considerations (Non-mandatory EPA waste disposal guidance)
Section 14: Transport Information (Non-mandatory DOT shipping names, UN numbers)
Section 15: Regulatory Information (Non-mandatory federal and state safety/environmental laws)
Section 16: Other Information (Date of SDS preparation, last revision history)

GHS Container Label Elements

All shipped containers and secondary containers must display six mandatory elements:

• Product Identifier: Chemical name or code number matching the SDS.
• Signal Word: Indicates the relative severity of hazard. There are only two signal words: "DANGER" for severe hazards, and "WARNING" for less severe hazards.
• Hazard Statements: Standardized phrases describing the nature of the hazard (e.g., "Fatal if swallowed," "Causes severe skin burns and eye damage").
• Precautionary Statements: Standardized advice on prevention, response, storage, and disposal (e.g., "Keep away from heat/sparks/open flames. Wear protective gloves").
• GHS Pictograms: Black hazard symbols enclosed within a red square set on a point (diamond border). OSHA enforces 8 health and physical hazard pictograms (Health Hazard, Flame, Exclamation Mark, Gas Cylinder, Corrosion, Exploding Bomb, Flame Over Circle, Skull & Crossbones; the Environmental pictogram is non-mandatory under OSHA).
• Manufacturer Information: Name, address, and emergency telephone number.
• Secondary Container Exemption: A secondary container (such as a spray bottle or solvent can) does not require a label if it is filled from a properly labeled primary container and is intended only for the immediate use of the employee who performed the transfer during that single work shift.

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2. Personal Protective Equipment (29 CFR Part 1926 Subpart E)

General Employer Duties & Hazard Assessment

Under Subpart E, the employer must assess the jobsite to identify physical and health hazards requiring personal protective equipment (PPE). PPE is legally defined as the last line of defense; employers must implement engineering and administrative controls first wherever feasible.

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3. Respirable Crystalline Silica Standard (29 CFR § 1926.1153)

Crystalline silica is a basic component of soil, sand, granite, concrete, brick, and mortar. When workers cut, grind, crush, or drill these materials, they generate microscopic respirable crystalline silica dust. Inhaling these fine particles causes incurable, disabling, and potentially fatal diseases including silicosis, lung cancer, chronic obstructive pulmonary disease (COPD), and kidney disease.

Exposure Limits

• Permissible Exposure Limit (PEL): 50 micrograms per cubic meter of air (50 µg/m³) calculated as an 8-hour Time-Weighted Average (TWA).
• Action Level: 25 µg/m³ calculated as an 8-hour TWA. Exposure at or above the action level triggers medical surveillance and air monitoring.

The Table 1 Compliance Pathway

OSHA established a flexible compliance mechanism under Table 1: Specified Exposure Control Methods When Working with Materials Containing Crystalline Silica. If a general contractor or subcontractor fully and properly implements the engineering controls, work practices, and respiratory protection specified in Table 1 for their specific construction task, the employer is legally exempt from conducting independent air monitoring and is not held to the 50 µg/m³ PEL.

Key Table 1 Equipment & Engineering Control Requirements:
┌────────────────────────────────────────┬─────────────────────────────────────────────────────────────┐
│ Construction Tool / Task               │ Specified Table 1 Engineering & Work Practice Controls       │
├────────────────────────────────────────┼─────────────────────────────────────────────────────────────┤
│ Stationary Masonry Saws                │ Equipped with integrated water delivery system that         │
│                                        │ continuously feeds water to the blade. No respirator needed.│
├────────────────────────────────────────┼─────────────────────────────────────────────────────────────┤
│ Handheld Power Saws                    │ Continuous integrated water feed. If used outdoors ≤ 4 hrs: │
│ (Cut-off saws cutting concrete/masonry)│ No respirator. If indoors or > 4 hrs outdoors: APF 10 mask. │
├────────────────────────────────────────┼─────────────────────────────────────────────────────────────┤
│ Handheld Grinders                      │ Equipped with commercially manufactured shroud and cyclonic │
│ (Surface grinding, tuckpointing)       │ vacuum system with 99.97% HEPA filter and filter cleaner.    │
├────────────────────────────────────────┼─────────────────────────────────────────────────────────────┤
│ Walk-Behind Saws                       │ Equipped with integrated water feed system. No respirator   │
│ (Slab joint cutting)                   │ required for outdoor operation.                             │
├────────────────────────────────────────┼─────────────────────────────────────────────────────────────┤
│ Rotary Hammers & Rock Drills           │ Shroud with HEPA vacuum dust collector OR continuous water.  │
└────────────────────────────────────────┴─────────────────────────────────────────────────────────────┘

Written Exposure Control Plan & Housekeeping Mandates

Contractors disturbing silica-containing materials must maintain a written exposure control plan identifying a designated Competent Person, tasks involving silica, engineering controls, and housekeeping rules:

• Banned Housekeeping Practices: Dry sweeping and dry brushing are strictly prohibited where they can contribute to employee silica exposure, unless wet sweeping or HEPA vacuuming is demonstrated to be infeasible.
• Compressed Air Restrictions: Using compressed air to clean clothing or surfaces contaminated with silica dust is completely prohibited unless the compressed air is used in conjunction with a ventilation system that effectively captures the dust cloud.
• Medical Surveillance: Employers must provide baseline and triennial (every 3 years) medical examinations (chest X-ray, spirometry lung function test) at no cost to employees who are required to wear a respirator under the silica standard for 30 or more days per year.

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4. OSHA Recordkeeping & Mandatory Incident Reporting (29 CFR Part 1904)

Recordkeeping Scope & Exemptions

• Small Employer Exemption: Employers with 10 or fewer employees across the entire corporate entity at all times during the preceding calendar year are exempt from routinely maintaining OSHA Form 300 injury logs (unless explicitly notified in writing by OSHA or the Bureau of Labor Statistics).
• High-Hazard Construction Rule: Construction (NAICS Code 23) is classified as a high-hazard industry. All construction contractors with 11 or more employees must maintain Part 1904 injury and illness records.

The Three OSHA Recordkeeping Forms

What Constitutes a "Recordable" Injury?

An injury or illness is recordable if it is work-related, results in a new case, and meets one or more criteria:

1. Death;
2. Days away from work;
3. Restricted work activity or transfer to another job;
4. Medical treatment beyond first aid;
5. Loss of consciousness; or
6. Significant injury or illness diagnosed by a physician or licensed health care professional.

First Aid vs. Recordable Medical Treatment (29 CFR § 1904.7(b)(5)(ii)):
• First Aid (NOT Recordable):
  - Non-prescription medications at non-prescription strength
  - Tetanus immunizations
  - Cleaning, flushing, or soaking surface wounds
  - Butterfly bandages or Steri-Strips (wound closures that do not involve sutures)
  - Hot or cold therapy (ice packs)
  - Temporary non-rigid supports (elastic bandages, wraps)
  - Eye patches
  - Removing foreign bodies from the eye using only irrigation or a cotton swab
  - Using finger guards
• Medical Treatment (Recordable):
  - Prescription medications (or non-prescription drugs prescribed at prescription strength)
  - Surgical sutures (stitches), staples, or medical tissue adhesives
  - Rigid braces, casts, or splints to immobilize bones/joints
  - Physical therapy directed by a licensed healthcare provider
  - Removing foreign bodies embedded in the eye (requiring surgical instruments)

Mandatory Emergency Incident Reporting Triggers (29 CFR § 1904.39)

Regardless of company size, all employers must report catastrophic incidents directly to OSHA:

• Workplace Fatalities: Must report to OSHA within 8 hours of learning of any work-related fatality resulting from a work-related incident.
• Inpatient Hospitalizations, Amputations, or Loss of an Eye: Must report to OSHA within 24 hours of learning of the work-related inpatient hospitalization of one or more employees, an amputation, or the loss of an eye.
• How to Report: By telephone to the Little Rock Area Office, by calling the 24-hour national hotline (1-800-321-OSHA / 1-800-321-6742), or through OSHA's online electronic reporting portal.

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5. Arkansas DEQ Stormwater Regulations (NPDES Permit ARR150000)

In Arkansas, environmental protection on construction jobsites is administered by the Division of Environmental Quality (DEQ) within the Arkansas Department of Energy and Environment. Under the federal Clean Water Act (NPDES program) and the Arkansas Water and Air Pollution Control Act, stormwater discharges from construction activities are strictly regulated.

Permitting Tiers under General Permit ARR150000

Construction projects involving clearing, grading, or excavating that disturb 1 acre or more of total land area (or less than 1 acre if part of a larger common plan of development) must obtain NPDES stormwater coverage:

Arkansas DEQ Construction Stormwater Permitting Tiers:
┌──────────────────────────────────────┬──────────────────────────────────────┐
│ Small Construction Site              │ Large Construction Site              │
│ (1 Acre to Less than 5 Acres)        │ (5 Acres or Greater)                 │
├──────────────────────────────────────┼──────────────────────────────────────┤
│ • Automatic coverage granted         │ • Formal submission to DEQ required  │
│ • Must prepare complete SWPPP        │ • Notice of Intent (NOI) + $200 fee  │
│ • Must post Notice of Coverage (NOC) │ • Must submit SWPPP to DEQ ≥ 30 days │
│   at entrance to jobsite             │   prior to ground disturbance        │
│ • No fee or NOI submittal to DEQ     │ • Cannot break ground until formal   │
│   prior to starting work             │   permit approval letter is issued   │
└──────────────────────────────────────┴──────────────────────────────────────┘

Stormwater Pollution Prevention Plan (SWPPP) & Best Management Practices (BMPs)

Every permitted project must have a site-specific written SWPPP developed and fully implemented prior to ground disturbance:

• Erosion and Sediment Controls (BMPs):
  • Stabilized Construction Entrance: A pad of crushed aggregate (minimum 2- to 3-inch stone, 6 inches deep, 50 feet long) placed at all site egress points to prevent tracking mud onto public roads.
  • Perimeter Sediment Barriers: Properly trenched silt fences, straw wattles, or rock check dams along drainage contours.
  • Concrete Washout Facility: Dedicated, lined, leak-proof pit or container for concrete truck chutes; strictly zero discharge to surface waters or ground.
• Mandatory Inspection Frequencies: The general contractor's designated inspector must conduct formal, documented site inspections either:
  1. Once every 7 calendar days; OR
  2. Once every 14 calendar days AND within 24 hours of a rainfall event of 0.25 inches or greater. (Most Arkansas commercial contractors adopt the 7-day schedule to ensure regulatory compliance). Inspection reports must be retained with the on-site SWPPP for at least 3 years.
• Final Stabilization: Coverage terminates only when all disturbed areas achieve final stabilization—defined as uniform, perennial vegetative cover with a density of at least 70% of the native background vegetative cover, after which a formal Notice of Termination (NOT) can be filed with DEQ.

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6. Real-World Arkansas Contractor Scenario

Scenario: Logistics Distribution Center in West Memphis (Crittenden County)

Delta Commercial Contractors Inc. broke ground on a 12-acre distribution warehouse near the I-40 corridor in West Memphis. The project involved deep earthmoving, extensive exterior concrete paving, and interior masonry block partitions.

Chronology of Compliance Audits & Field Actions:
1. Environmental Permitting (DEQ ARR150000):
   - Because disturbance was 12 acres (≥ 5 acres), Delta submitted an NOI, $200 fee, and SWPPP
     to DEQ 35 days before earthwork commenced, securing its permit tracking number.
   - Following a severe 1.8-inch Mississippi Delta thunderstorm, the inspector inspected all
     perimeter silt fences within 24 hours, logging sediment accumulation exceeding 50% capacity
     and dispatching a crew to shovel and reset the fabric.
2. Occupational Health Compliance (Silica 29 CFR § 1926.1153):
   - Subcontractor crews cutting slab control joints were observed dry-sawing without dust suppression.
   - Delta's site superintendent intervened, halting the operation.
   - The subcontractor replaced dry saws with Table 1 walk-behind saws featuring integrated continuous
     water delivery, eliminating the need for independent air monitoring.
3. Safety Incident & Reporting Trigger (29 CFR Part 1904):
   - During structural steel erection, a rigger suffered an amputated fingertip when a choker
     cable slipped on an unloading truck. The incident occurred on Tuesday at 9:00 AM.
   - Delta's safety director notified the OSHA Little Rock Area Office at 1:30 PM (within 4.5 hours,
     well within the 24-hour statutory deadline for amputations).
   - Delta completed Form 301 and entered the case on Form 300 within 48 hours.