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2005 Gulf-Coast Hurricane Response

OSHA Silica Monitoring Data

Please Note:
The 8-hour OSHA Permissible Exposure Limit (PEL) for Respirable Dust containing quartz is determined individually for each sample, using the following formula:

PEL = 10mg/m3 ÷ (%SiO2+2), where %SiO2 refers to the amount of quartz measured in that sample.

This calculated PEL is compared with the Respirable Dust sample result to determine whether there is an overexposure. If there is no quartz found in a sample, the PEL for that Respirable Dust sample is 5.0 mg/m3, equivalent to the Particulates Not Otherwise Regulated PEL. The PEL for respirable dust containing quartz varies depending on the concentration of quartz in the sample. The higher the concentration of quartz the lower the PEL. For additional information, see crystalline silica (quartz) and the OSHA PEL.

a = Results reported are time weighted averages for the actual sampling period.
b = For comparative purposes only, the TWA > PEL box is checked Y if the actual TWA is greater than the OSHA
8-hour PEL.  Does not necessarily represent a legal PEL violation. For additional information, see Information on Sampling Results.
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
11/15/05 NA AL debris collection  Equipment Operator: Heavy  Personal 177 0.000 ND 5.000   
11/15/05 NA AL debris collection  Equipment Operator: Skidsteer/Bobcat  Personal 178 0.040 100.00 0.098   
11/10/05 GULFPORT AL site clearing  Equipment Operator: Heavy  Personal 96 0.170 ND 5.000   
11/10/05 GULFPORT AL site clearing  Quality Assurance Inspector  Personal 88 0.000 ND 5.000   
11/10/05 GULFPORT AL site clearing  Chainsaw Operator  Personal 97 0.079 ND 5.000   
11/10/05 OCEAN SPRINGS AL debris collection  Equipment Operator: Heavy  Personal 169 0.150 31.00 0.303   
11/10/05 OCEAN SPRINGS AL debris collection  Equipment Operator: Heavy  Personal 172 0.190 ND 5.000   
11/09/05 WAYNESBORO AL debris collection  Equipment Operator: Heavy  Personal 66 0.000 ND 5.000   
11/09/05 TYLERTOWN AL NA  Quality Assurance Inspector  Personal 152 0.062 ND 5.000   
11/09/05 NA AL debris reduction  Equipment Operator: Heavy  Personal 166 0.110 40.00 0.238   
11/09/05 TYLERTOWN AL debris reduction  Quality Assurance Inspector  Personal 180 0.059 ND 5.000   
11/09/05 WIGGINS AL debris reduction  Equipment Operator: Heavy  Personal 115 0.046 ND 5.000   
11/08/05 NA AL debris reduction  Equipment Operator: Heavy  Personal 128 0.240 23.00 0.400   
11/08/05 PIKE COUNTY AL debris reduction  Equipment Operator: Heavy  Personal 118 0.000 ND 5.000   
11/07/05 NA AL NA  Equipment Operator: Heavy  Personal 108 0.000 ND 5.000   
11/07/05 LAMAR COUNTY AL debris reduction  Quality Assurance Inspector  Personal 150 0.000 ND 5.000   
11/07/05 LAMAR COUNTY AL debris reduction  Spotter  Personal 117 0.210 30.00 0.313   
11/07/05 MCNEILL AL debris reduction  Equipment Operator: Heavy  Personal 150 0.086 ND 5.000   
11/06/05 BEAUMONT AL debris reduction  Equipment Operator: Heavy  Personal 138 0.120 ND 5.000   
11/06/05 BEAUMONT AL debris reduction  Quality Assurance Inspector  Personal 121 0.000 ND 5.000   
11/06/05 BOND AL debris reduction  Quality Assurance Inspector  Personal 126 0.000 ND 5.000   
10/06/05 NA AL debris reduction  Equipment Operator: Heavy  Personal 125 0.012 ND 5.000   
09/29/05 NA AL NA  Laborers, except construction (8769)  Area 355 0.073 ND 5.000   
09/28/05 NA AL Debris Reduction  Quality Assurance Inspector  Area 230 0.180 ND 5.000   
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
09/27/05 NA AL Sand Removal  Equipment Operator: Heavy  Area 121 0.100 ND 5.000   
09/27/05 NA AL Sand Removal  Equipment Operator: Heavy  Personal 128 0.170 ND 5.000   
09/27/05 NA AL Debris Reduction  Quality Assurance Inspector  Area 60 0.000 ND 5.000   
09/27/05 NA AL Debris Reduction  Equipment Operator: Heavy  Area 60 0.000 ND 5.000   
09/26/05 NA AL Sand Removal  Equipment Operator: Heavy  Personal 58 0.190 ND 5.000   
09/21/05 NA AL Sand Removal  Equipment Operator: Heavy  Personal 184 0.035 ND 5.000   
09/21/05 NA AL Sand Removal  Equipment Operator: Heavy  Area 60 0.000 ND 5.000   
09/21/05 NA AL Sand Removal  Equipment Operator: Heavy  Area 90 0.380 ND 5.000   
09/21/05 NA AL Debris Reduction  Equipment Operator: Heavy  Area 87 0.460 ND 5.000   
09/21/05 NA AL Debris Reduction  Equipment Operator: Heavy  Area 60 0.130 ND 5.000   
09/21/05 NA AL Debris Reduction  Quality Assurance Inspector  Area 105 0.000 ND 5.000   
08/24/06 NA LA NA  Laborers, except construction (8769)  Personal 53 1.000 34.00 0.278  Y 
08/23/06 NA LA NA  Laborers, except construction (8769)  Personal 51 0.000 ND 5.000   
08/22/06 NA LA NA  Laborers, except construction (8769)  Personal 80 0.000 ND 5.000   
08/22/06 NA LA NA  Laborers, except construction (8769)  Personal 108 0.000 ND 5.000   
08/15/06 NA LA NA  Equipment Operator: Heavy  Personal 89 0.000 ND 5.000   
08/15/06 NA LA NA  Waste/Debris Collector  Personal 75 0.000 ND 5.000   
08/14/06 NA LA NA  Equipment Operator: Skidsteer/Bobcat  Personal 55 0.210 ND 5.000   
08/14/06 NA LA NA  Quality Assurance Inspector  Personal 33 0.000 ND 5.000   
08/11/06 SLIDELL LA debris collection  Spotter  Personal 145 0.057 ND 5.000   
08/11/06 SLIDELL LA debirs collection  Truck Driver: Heavy/Tractor-Trailer  Personal 99 0.340 ND 5.000   
08/11/06 SLIDELL LA debris collection  Equipment Operator: Skidsteer/Bobcat  Personal 132 0.000 ND 5.000   
08/11/06 SLIDELL LA debris collection  Spotter  Personal 149 0.000 ND 5.000   
08/11/06 SPRINGS LA debris collection  Quality Assurance Inspector  Personal 144 0.094 ND 5.000   
08/04/06 BRAITHWATE LA sand removal  Equipment Operator: Heavy  Personal 180 0.120 ND 5.000   
08/03/06 NEW ORLEAS LA demolition  Hazardous Materials Removal Worker  Personal 51 0.000 ND 5.000   
08/02/06 TAMMANY LA demolition  Hazardous Materials Removal Worker  Personal 26 0.470 ND 5.000   
08/01/06 NEW ORLEANS LA debirs collection  Hazardous Materials Removal Worker  Personal 55 0.180 ND 5.000   
07/29/06 NEW ORLEANS LA debirs collection  Waste/Debris Collector  Personal 39 0.340 ND 5.000   
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
07/27/06 AVONDALE LA debirs collection  Equipment Operator: Skidsteer/Bobcat  Personal 73 0.270 ND 5.000   
07/26/06 NEW ORLEANS LA debirs reduction  Quality Assurance Inspector  Personal 365 0.000 ND 5.000   
07/26/06 MERAVE LA demolition, debris collection  Hazardous Materials Removal Worker  Personal 76 0.160 ND 5.000   
07/26/06 ARABI LA demolition  Laborers, except construction (8769)  Personal 120 0.089 ND 5.000   
07/26/06 NEW ORLEANS LA debirs collection  Waste/Debris Collector  Personal 165 0.083 ND 5.000   
07/25/06 NEW ORLEANS LA unique debirs removal  Environmental Science & Protection Techs, Including Health  Personal 120 0.410 ND 5.000   
07/19/06 ARABI LA demolition  Construction Laborer  Personal 380 0.053 ND 5.000   
07/19/06 ARABI LA demolition  Construction Laborer  Personal 384 0.031 ND 5.000   
07/19/06 SLIDELL LA demolition  Waste/Debris Collector  Personal 298 0.200 19.00 0.476   
07/19/06 SLIDELL LA demolition  Waste/Debris Collector  Personal 326 0.180 31.00 0.303   
07/14/06 NEW ORLEANS LA unique debris removal  Waste/Debris Collector  Personal 240 0.000 ND 5.000   
07/11/06 AVONDALE LA debirs collection  Spotter  Personal 65 0.000 ND 5.000   
07/11/06 AVONDALE LA debirs collection  Spotter  Personal 60 0.270 ND 5.000   
07/06/06 NEW ORLEANS LA demolition  Truck Driver: Heavy/Tractor-Trailer  Personal 70 0.000 ND 5.000   
07/05/06 HARAHAN LA demolition  Truck Driver: Heavy/Tractor-Trailer  Personal 76 0.250 ND 5.000   
07/05/06 ARIBI LA demolition  Truck Driver: Heavy/Tractor-Trailer  Personal 60 0.000 ND 5.000   
06/29/06 CARYSS LA debirs collection  Laborers, except construction (8769)  Personal 230 0.041 ND 5.000   
06/23/06 ARABI LA demolition  Environmental Science & Protection Techs, Including Health  Personal 124 0.049 ND 5.000   
06/23/06 ARABI LA demolition  Construction Laborer  Personal 105 0.000 ND 5.000   
06/20/06 MATAIRE LA demolition  Laborers, except construction (8769)  Personal 146 0.000 ND 5.000   
06/20/06 MATAIRE LA demolition  Equipment Operator: Heavy  Personal 151 0.000 ND 5.000   
06/20/06 GRAND ISLE LA debris collection  Waste/Debris Collector  Personal 159 0.085 ND 5.000   
06/20/06 SLIDELL LA demolition  Equipment Operator: Heavy  Personal 279 1.400 5.60 1.306  Y 
06/20/06 SLIDELL LA demolition  Equipment Operator: Heavy  Personal 183 1.400 5.70 1.306  Y 
06/20/06 SLIDELL LA site clearing  Equipment Operator: Skidsteer/Bobcat  Personal 120 1.900 11.00 0.769  Y 
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
06/20/06 SLIDELL LA demolition  Equipment Operator: Heavy  Personal 254 0.390 ND 5.000   
06/19/06 ARAB LA site clearing  Laborers, except construction (8769)  Personal 110 0.110 ND 5.000   
06/19/06 EMPIRE LA NA  Laborers, except construction (8769)  Personal 233 0.090 ND 5.000   
06/16/06 NO LA debris collection  Flagman  Personal 274 0.037 ND 5.000   
06/16/06 NA LA demolition  Construction Laborer  Personal 126 0.053 ND 5.000   
06/15/06 METARIE LA demolition  Spotter  Personal 166 0.160 ND 0.544   
06/15/06 METARIE LA demolition  Spotter  Personal 156 0.160 27.00 0.544   
06/15/06 METAIRIE LA demolition  Equipment Operator: Skidsteer/Bobcat  Personal 324 0.280 ND 5.000   
06/14/06 ARABI LA debris collection  Laborers, except construction (8769)  Personal 98 0.140 ND 5.000   
06/08/06 SULPHUR LA demolition  Truck Driver: Heavy/Tractor-Trailer  Personal 120 0.000 ND 5.000   
06/06/06 PLAQUEMINE PARRISH LA leveee upgrades  Equipment Operator: Heavy  Personal 212 0.120 ND 5.000   
06/06/06 PLAQUEMINE PARRISH LA levee upgrades  Equipment Operator: Heavy  Personal 231 0.000 ND 5.000   
06/05/06 AVONDALE LA debris reduction  Laborers, except construction (8769)  Personal 122 0.000 ND 5.000   
06/03/06 SLIDELL LA debirs reduction  Spotter  Personal 218 0.250 12.00 0.714   
05/31/06 NA LA debris collection  Spotter  Personal 224 0.420 ND 5.000   
05/20/06 VENICE LA debirs collection  Equipment Operator: Skidsteer/Bobcat  Personal 265 0.100 ND 5.000   
05/20/06 VENICE LA debirs collection  Equipment Operator: Skidsteer/Bobcat  Personal 275 0.350 ND 5.000   
05/20/06 NA LA debirs reduction  Equipment Operator: Heavy  Personal 231 0.050 ND 5.000   
05/20/06 ST. BERNARD LA debirs reduction  Equipment Operator: Heavy  Personal 242 0.160 ND 5.000   
05/20/06 COVINGTON LA debirs collection  Flagman  Personal 300 0.140 ND 5.000   
05/20/06 COVINGTON LA debris collection  Quality Assurance Inspector  Personal 286 0.068 ND 5.000   
05/19/06 SLIDELL LA debirs collection  Equipment Operator: Heavy  Personal 219 0.150 ND 5.000   
05/19/06 SLIDELL LA debris collection  Equipment Operator: Heavy  Personal 246 0.240 ND 5.000   
05/18/06 NEW ORLEANS LA debris collection  Waste/Debris Collector  Personal 158 0.100 ND 5.000   
05/17/06 NEW ORLEANS LA unique debris removal  Hazardous Materials Removal Worker  Personal 120 0.000 ND 5.000   
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
05/16/06 NA LA NA  Laborers, except construction (8769)  Personal 220 0.150 ND 5.000   
05/16/06 NA LA demolition  Equipment Operator: Heavy  Personal 272 0.100 35.00 0.270   
05/12/06 NA LA NA  Diver  Personal 310 0.000 ND 5.000   
05/10/06 SLIDEL LA debris reduction  Quality Assurance Inspector  Personal 254 0.060 ND 5.000   
05/10/06 COVINGTON LA debris collection  Waste/Debris Collector  Personal 234 0.000 ND 5.000   
05/08/06 NEW ORLEANS LA debris reduction  Equipment Operator: Skidsteer/Bobcat  Personal 333 0.094 ND 5.000   
05/08/06 NEW ORLEANS LA debirs reduction  Flagman  Personal 316 0.059 ND 5.000   
05/06/06 BURAS LA demolition  Equipment Operator: Heavy  Personal 131 0.078 ND 5.000   
05/05/06 NA LA NA  Pile-Driver Operator  Personal 280 0.000 ND 5.000   
05/03/06 CHALMETTE LA debris collection  Hazardous Materials Removal Worker  Personal 297 0.096 ND 5.000   
05/03/06 NEW ORLEANS LA debris collection  Truck Driver: Heavy/Tractor-Trailer  Personal 327 0.047 ND 5.000   
05/01/06 NEW ORLEANS LA debris collection  Waste/Debris Collector  Personal 201 0.000 ND 5.000   
04/27/06 CHALMETTE LA maritime port restoration  Crane Operator  Personal 313 0.053 ND 5.000   
04/24/06 CHALMETTE LA debirs reduction  Spotter  Personal 189 0.290 ND 5.000   
04/24/06 EMPIRE LA debris reduction  Hazardous Materials Removal Worker  Personal 189 0.000 ND 5.000   
04/22/06 NA LA levee restoration  Construction Laborer  Personal 218 0.240 ND 5.000   
04/22/06 NA LA levee restoration  Construction Laborer  Personal 215 0.038 ND 5.000   
04/22/06 NA LA unique debris removal  Waste/Debris Collector  Personal 202 0.000 ND 5.000   
04/22/06 AVONDALE LA NA  Laborers, except construction (8769)  Personal 219 0.073 ND 5.000   
04/21/06 BURAS LA debirs collection, unique debris removal  Hazardous Materials Removal Worker  Personal 249 0.000 ND 5.000   
04/21/06 BURAS LA debris collection  Waste/Debris Collector  Personal 312 0.043 ND 5.000   
04/21/06 NEW ORLEANS LA unique debris removal  Waste/Debris Collector  Personal 315 0.025 ND 5.000   
04/20/06 BURAS LA NA  Laborers, except construction (8769)  Personal 257 0.030 ND 5.000   
04/19/06 NEW ORLEAN LA debris collection  Waste/Debris Collector  Personal 473 0.067 ND 5.000   
04/19/06 NEW ORLEANS LA debirs collection  Flagman  Personal 446 0.092 ND 5.000   
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
04/14/06 NEW ORLEANS LA debirs collection  Equipment Operator: Skidsteer/Bobcat  Personal 65 0.000 ND 5.000   
04/13/06 NEW ORLEANS LA NA  Equipment Operator: Heavy  Personal 353 0.110 ND 5.000   
04/13/06 NA LA debris collection  Equipment Operator: Skidsteer/Bobcat  Personal 412 0.076 ND 5.000   
04/12/06 BURAS LA demolition  Waste/Debris Collector  Personal 135 0.110 ND 5.000   
04/12/06 NA LA demolition, debris collection  Spotter  Personal 125 0.100 ND 5.000   
04/12/06 NA LA debirs collection  Flagman  Personal 206 0.000 ND 5.000   
04/11/06 NEW ORLEANS LA debris collection  Waste/Debris Collector  Area 575 0.270 9.20 0.893   
04/11/06 NEW ORLEANS LA debris collection  Waste/Debris Collector  Personal 570 0.098 ND 5.000   
04/11/06 BURAS LA demolition  Hazardous Materials Removal Worker  Personal 480 0.053 ND 5.000   
04/11/06 BURAS LA demolition  Hazardous Materials Removal Worker  Personal 479 0.069 ND 5.000   
04/11/06 BURAS LA debirs collection  Shovel Crew  Personal 481 0.016 ND 5.000   
04/08/06 NA LA debirs collection  Flagman  Personal 485 0.032 ND 5.000   
04/07/06 NA LA debris collection  Equipment Operator: Skidsteer/Bobcat  Personal 452 0.240 9.60 0.862   
04/07/06 CHALMETTE LA debris collection  Equipment Operator: Heavy  Personal 131 0.000 ND 5.000   
04/06/06 NEW ORLEANS LA debris reduciton  Waste/Debris Collector  Personal 116 0.000 ND 5.000   
04/06/06 NA LA demolition  Construction Laborer  Personal 270 0.053 ND 5.000   
04/06/06 BURAS LA demolition  Construction Laborer  Personal 60 0.000 ND 5.000   
04/06/06 NEW ORLEANS LA debirs reduction  Hazardous Materials Removal Worker  Personal 91 0.000 ND 5.000   
04/06/06 NA LA demolition  Flagman  Personal 362 0.000 ND 5.000   
04/05/06 NA LA NA  Hazardous Materials Removal Worker  Personal 298 0.077 ND 5.000   
03/31/06 BURAS LA demolition  Construction Laborer  Personal 180 0.130 ND 5.000   
03/29/06 VENICE LA demolition   Hazardous Materials Removal Worker  Personal 367 0.100 ND 5.000   
03/25/06 NA LA demolition  Laborers, except construction (8769)  Personal 159 0.000 ND 5.000   
03/23/06 VENICE LA demolition  Laborers, except construction (8769)  Personal 111 0.000 ND 5.000   
03/23/06 NA LA demolition  Hazardous Materials Removal Worker  Personal 213 0.063 ND 5.000   
Sample Date City where sample was collected State Work Operation Occupation Smpl Type Time Respirable Dust TWAb mg/m3 Crystalline Silicaa (Quartz)c %b PEL mg/m3 (based on formula) TWA > PEL
03/22/06 NA LA demolition  Waste/Debris Collector  Personal 326 0.029 ND 5.000   
03/22/06 NA LA demolition  Waste/Debris Collector  Personal 326 0.061 ND 5.000   
03/17/06 AVONDALE LA n/a  Flagman  Personal 315 0.044 ND 5.000   
03/17/06 NA LA NA  Laborers, except construction (8769)  Personal 150 0.220 18.00 0.500   
03/17/06 LAKE CHARLES LA debris collection  Flagman  Personal 210 0.039 ND 5.000   
03/17/06 LAKE CHARLES LA debirs collection  Flagman  Personal 220 0.000 ND 5.000   
03/17/06 NA LA unique debirs removal  Equipment Operator: Heavy  Personal 174 0.200 17.00 0.526   
03/17/06 OLD GENTILLY LA unique debirs removal  Equipment Operator: Heavy  Personal 181 0.000 ND 5.000   
03/16/06 SLIDELL LA NA  Laborers, except construction (8769)  Personal 210 0.039 ND 5.000   
03/16/06 BURAS LA demolition  Hazardous Materials Removal Worker  Personal 225 0.055 ND 5.000   
03/16/06 NA LA NA  Hazardous Materials Removal Worker  Personal 225 0.140 ND 5.000   
03/16/06 NA LA NA  Laborers, except construction (8769)  Personal 414 0.051 ND 5.000   
03/16/06 NA LA NA  Equipment Operator: Heavy  Personal 313 0.000 ND 5.000   
03/15/06 GIBSTOWN LA NA  Hazardous Materials Removal Worker  Personal 150 0.000 ND 5.000   
03/15/06 NA LA demolition  Hazardous Materials Removal Worker  Personal 291 0.065 ND 5.000   
03/15/06 BUNAS LA demolition  Hazardous Materials Removal Worker  Personal 291 0.000 ND 5.000   
03/14/06 ST TAMMARY PARISH LA NA  Laborers, except construction (8769)  Personal 194 0.028 ND 5.000   
03/14/06 NA LA debirs reduction  Equipment Operator: Heavy  Personal 270 0.180 ND 5.000   
03/13/06 NO LA debris collection  Waste/Debris Collector  Personal 122 0.000 ND 5.000   
03/13/06 NA LA debris collection  Waste/Debris Collector  Personal 350 0.190 ND 5.000   
03/13/06 NA LA debris reduction  Equipment Operator: Heavy  Personal 309 0.061 ND 5.000   
03/11/06 NA LA NA  Laborers, except construction (8769)  Personal 285 0.077 ND 5.000   
03/11/06 NEW ORLEANS LA debris collection  Equipment Operator: Skidsteer/Bobcat  Personal 230 0.072 ND 5.000   
03/11/06 NA LA