Holocene drilling performs complete well decommissioning services. We can decommission (AKA well abandonment) steel or PVC water wells up to 12” in diameter and hundreds of feet deep. Water wells are typically perforated with a standard perforation tool, and then filled with grout. Holocene has a variety of high capacity grout mixers and pumps for efficiency. Water wells will be decommissioned in compliance with Washington Administrative Code (WAC) 173-160-381, standards for decommissioning a (water) well by licensed drillers.
PVC monitoring wells of any diameter can be chipped in place or grouted in place. We can also drill out PVC wells up to 10” in diameter. Holocene has developed a unique in-house 2” perforation tool that can easily perforate 2” PVC monitoring wells in place. PVC wells up to 12” diameter can also be perforated. Monitor wells will be decommissioned in compliance with Washington Administrative Code (WAC) 173-160-460, decommissioning process for resource protection wells.