- Importance Core-
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Verify depths and alignments of boring positions.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Operate controls to stabilize machines and to position and align drills.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Operate machines to flush earth cuttings or to blow dust from holes.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Record drilling progress and geological data.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
- Importance Supplemental-
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Document geological formations encountered during work.
Perform pumping tests to assess well performance.
Withdraw drill rods from holes, and extract core samples.
Retract augers to force discharge dirt from holes.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Signal crane operators to move equipment.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
- Relevance of Task Core-
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Operate controls to stabilize machines and to position and align drills.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Operate machines to flush earth cuttings or to blow dust from holes.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Verify depths and alignments of boring positions.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Record drilling progress and geological data.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
- Relevance of Task Supplemental-
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
Document geological formations encountered during work.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Withdraw drill rods from holes, and extract core samples.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Design well pumping systems.
Perform pumping tests to assess well performance.
Signal crane operators to move equipment.
Retract augers to force discharge dirt from holes.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
-Daily Frequency of Task (Categories 1-7) Core-
Record drilling progress and geological data.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Verify depths and alignments of boring positions.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Operate controls to stabilize machines and to position and align drills.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
-Daily Frequency of Task (Categories 1-7) Supplemental-
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Document geological formations encountered during work.
-Hourly or more Frequency of Task (Categories 1-7) Core-
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Operate controls to stabilize machines and to position and align drills.
Operate machines to flush earth cuttings or to blow dust from holes.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Verify depths and alignments of boring positions.
Record drilling progress and geological data.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
-Hourly or more Frequency of Task (Categories 1-7) Supplemental-
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Retract augers to force discharge dirt from holes.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Withdraw drill rods from holes, and extract core samples.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Document geological formations encountered during work.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Signal crane operators to move equipment.
-More than monthly Frequency of Task (Categories 1-7) Core-
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Verify depths and alignments of boring positions.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Operate machines to flush earth cuttings or to blow dust from holes.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Operate controls to stabilize machines and to position and align drills.
Record drilling progress and geological data.
-More than monthly Frequency of Task (Categories 1-7) Supplemental-
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Signal crane operators to move equipment.
Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
Document geological formations encountered during work.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Retract augers to force discharge dirt from holes.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Withdraw drill rods from holes, and extract core samples.
-More than weekly Frequency of Task (Categories 1-7) Core-
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Operate machines to flush earth cuttings or to blow dust from holes.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Operate controls to stabilize machines and to position and align drills.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Verify depths and alignments of boring positions.
Record drilling progress and geological data.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
-More than weekly Frequency of Task (Categories 1-7) Supplemental-
Signal crane operators to move equipment.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Perform pumping tests to assess well performance.
Retract augers to force discharge dirt from holes.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Document geological formations encountered during work.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
-More than yearly Frequency of Task (Categories 1-7) Core-
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Record drilling progress and geological data.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Operate machines to flush earth cuttings or to blow dust from holes.
Operate controls to stabilize machines and to position and align drills.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Verify depths and alignments of boring positions.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
-More than yearly Frequency of Task (Categories 1-7) Supplemental-
Perform pumping tests to assess well performance.
Signal crane operators to move equipment.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
Retract augers to force discharge dirt from holes.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Withdraw drill rods from holes, and extract core samples.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Document geological formations encountered during work.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
-Several times daily Frequency of Task (Categories 1-7) Core-
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Verify depths and alignments of boring positions.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Record drilling progress and geological data.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Operate controls to stabilize machines and to position and align drills.
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Operate machines to flush earth cuttings or to blow dust from holes.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Retrieve lost equipment from bore holes, using retrieval tools and equipment.
-Several times daily Frequency of Task (Categories 1-7) Supplemental-
Document geological formations encountered during work.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Retract augers to force discharge dirt from holes.
Signal crane operators to move equipment.
Withdraw drill rods from holes, and extract core samples.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
-Yearly or less Frequency of Task (Categories 1-7) Core-
Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
Operate controls to stabilize machines and to position and align drills.
Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
Select the appropriate drill for the job, using knowledge of rock or soil conditions.
Record drilling progress and geological data.
Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
Start, stop, and control drilling speed of machines and insertion of casings into holes.
Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
Verify depths and alignments of boring positions.
Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
Drive trucks, tractors, or truck-mounted drills to and from work sites.
Monitor drilling operations, checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
Operate machines to flush earth cuttings or to blow dust from holes.
Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
-Yearly or less Frequency of Task (Categories 1-7) Supplemental-
Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
Signal crane operators to move equipment.
Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
Document geological formations encountered during work.
Withdraw drill rods from holes, and extract core samples.
Retract augers to force discharge dirt from holes.
Place and install screens, casings, pumps, and other well fixtures in order to develop wells.
Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
Perform pumping tests to assess well performance.
Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.