Baseline Groundwater Sampling

On January 7, 2013, the Colorado Oil and Gas Conservation Commission (COGCC) approved Rule 609, Statewide Groundwater Baseline Sampling and Monitoring.  AGW has extensive experience with baseline sampling activities for the oil and gas industry and is assisting our clients in complying with the mandatory, statewide sampling program, which became effective on May 1, 2013.  AGW has extensive experience with baseline sampling activities for the oil and gas industry and assists our clients with Rule 609 compliance, or with sampling requirements under the revised Rule 318A.e.(4) for the Greater Wattenberg Area.

AGW can offer competitive sampling and laboratory costs for your program. 

The new rule includes the following components:

  • Initial baseline samples and subsequent monitoring samples shall be collected from all available water sources, up to a maximum of four (4), within a one-half (1/2) mile radius of a proposed Oil and Gas Well, Multi-Well Site, or Dedicated Injection Well.
  • Initial sampling shall be conducted within 12 months prior to setting conductor pipe in a well or the first well on a multi-well site, or commencement of drilling a Dedicated Injection Well; one subsequent sampling event shall be conducted at the initial sample locations between 6 and 12 months, and a second subsequent sampling event shall be conducted between 5 and 6 years following completion of the well or dedicated injection well, or the last well on a multi-well site.
  • Copies of all final laboratory analytical results shall be provided to the COGCC Director in an electronic data deliverable format, and to the water well owner or landowner within three (3) months of collecting the samples.