Includes the clearing of land, building of lease roads, slush pits, levees or fire walls, the laying or taking up of flow lines and water lines, installing of central pumping units, acidizing of wells and lease beautification work.

Code 6216 applies to oil field specialist contractors engaged in well maintenance operations at oil lease sites.  This classification includes but is not limited to well maintenance, dirt construction operators, oil treating service, oil field roustabout services, pumpers, and tank cleaning services.

Dirt construction operators use earthmoving equipment and perform services such as excavation, ditch digging and construction of dikes and dams.

Oil treating operations include heat treating of subgrade oil stored in tank batteries and the cleaning of auxiliary equipment using steam cleaning equipment.

Tank cleaning service consists of removal of paraffin and residue from the interior of tank batteries and spreading the residue on oil lease roads.

Tank truck operations servicing oil well sites are classified to this classification.  These employers deliver specialty brine water that is used to facilitate the removal of cuttings during the drilling process.  The water is placed into a frac tank near the drilling rig and which the driller will draw from during the drilling process.  These employers will usually remove waste water from these sites, which is a by-product of the drilling process.  The waste water is generally in a containment pit where suction hoses are installed.  The water is pumped into the tank truck and taken to a designated disposal site.