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Inspection Detail
Inspection: 303675425 - Concrete Works Of Colorado, Inc.
Inspection Information - Office: Denver Area Office
Site Address:
Concrete Works Of Colorado, Inc.
2537 Pearl St.
Boulder, CO 80301
Mailing Address:
3550 East 160th Avenue, Brighton, CO 80601
Union Status: NonUnion
SIC:1611
NAICS: 0
Inspection Type: Accident
Scope: Partial
Advanced Notice: N
Ownership: Private
Safety/Health: Safety
Close Conference: 05/24/2001
Emphasis: N:Trench, S:Construction
Case Closed: 08/02/2001
| Type | Activity Nr | Safety | Health |
|---|---|---|---|
| Accident | 101571693 | ||
| Referral | 201575040 | Yes | Yes |
| Violations/Penalties | Serious | Willful | Repeat | Other | Unclass | Total |
|---|---|---|---|---|---|---|
| Initial Violations | 3 | 3 | ||||
| Current Violations | 2 | 2 | ||||
| Initial Penalty | $10,500 | $0 | $0 | $0 | $0 | $10,500 |
| Current Penalty | $4,900 | $0 | $0 | $0 | $0 | $4,900 |
| FTA Penalty | $0 | $0 | $0 | $0 | $0 | $0 |
| # | Citation ID | Citaton Type | Standard Cited | Issuance Date | Abatement Due Date | Current Penalty | Initial Penalty | FTA Penalty | Contest | Latest Event | Note |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 01001 | Serious | 19260021 B02 | 05/25/2001 | 07/15/2001 | $1,750 | $3,500 | $0 | I - Informal Settlement | ||
| 2. | 01002 | Serious | 19260651 B03 | 05/25/2001 | 06/12/2001 | $3,500 | $3,500 | $0 | I - Informal Settlement | Citation has been deleted. | |
| 3. | 01003 | Serious | 19260651 K01 | 05/25/2001 | 06/12/2001 | $3,500 | $3,500 | $0 | I - Informal Settlement | Citation has been deleted. | |
| 4. | 01004A | Serious | 19260651 B03 | 05/25/2001 | 06/12/2001 | $3,150 | $0 | $0 | Q - National Office Adjustment | ||
| 5. | 01004B | Serious | 19260651 K01 | 05/25/2001 | 06/12/2001 | $0 | $0 | $0 | Q - National Office Adjustment |
Investigation Summary
The contractor was excavating from the road way toward the right of way line to install new sidewalks and curb and gutter. This activity was one element of a street widening project. Employee #1, on the Grad-all XL 2300, was making a cut into the driveway of a home with a 5-ft flat bottom bucket and caught the gas line. Unknown to the construction workers, the pipe had separated at two locations, at the curb line and under the garage apron of the home. The gas seeped into the garage where the heater and furnace were located. After the concentration of natural gas exceeded the Lower Explosive Limit (LEL), the gas reached an ignition source, the pilot light either on the furnace or the water heater. This caused the natural gas explosion at approximately 11:52 a.m. on January 31, 2001. The explosion resulted in three hospitalizations and a total loss of the home.
Keywords: BURN, PILOT LIGHT, HEAT, NATURAL GAS, EXPLOSION, GAS LEAK
| # | Inspection | Age | Sex | Degree of Injury | Nature of Injury | Occupation |
|---|---|---|---|---|---|---|
| 1 | 303675425 | Hospitalized injury | Burn/Scald(Heat) | Industrial truck and tractor equipment operators | ||
| 2 | 303675425 | Hospitalized injury | Burn/Scald(Heat) | Construction laborers | ||
| 3 | 303675425 | Hospitalized injury | Burn/Scald(Heat) | Supervisors, material moving equipment operators |