| Environmental | Form: (04)
400483934
10/21/2013 | Visual monitoring and observations will made and recorded along West Divide Creek from surface water monitoring stations DCS-1 to DCS-8 during groundwater sampling activities and other routine site visits. |
| Environmental | Form: (04)
400483934
10/21/2013 | In the event that visual monitoring and observation of the surface water features indicate anomalies; or that samples collected from monitoring wells (including sentinel and down gradient monitoring wells) indicate increasing concentrations of BTEX, Encana shall institute a contingency plan. This plan may include increased sampling frequency of surface water and monitoring wells and potential activating the air sparging system. Other contingency plans may be warranted. |
| Environmental | Form: (04)
400483934
10/21/2013 | The air sparging system shall remain intact and be able to be operational. This can be evaluated over the next 6-12 months. |
| Environmental | Form: (04)
400483934
10/21/2013 | Continue with quarterly groundwater monitoring and sampling for BTEX and Dissolved Methane at Monitoring Well/Sampling Locations MW-2, MW-3, MW-17, MW-12, MW-8, MW-20, and MW-22.
Continue to provide updated monitoring reports on a quarterly basis.
|
| Environmental | Form: (04)
400483934
10/21/2013 | Monitoring wells MW-6, MW-7, MW-9, MW-11, MW-14, MW-15, MW-16, MW-18, MW-21, MW-23, MW-24, MW-25, MW-26, and MW-27, can be abandoned in accordance with the State Engineers practice and procedures. |
| Engineer | Form: (06)
401132849
11/02/2016 | 1) Prior to initiation of plugging operations, a bradenhead test shall be performed. If any pressure remains at the conclusion of the test or any liquids were present call COGCC Engineer for sampling requirements and changes to the plugging procedure. Form 17 shall be submitted within 10 days of the test.
2) Provide 48 hour notice of plugging MIRU via electronic Form 42.
3) Properly abandon flowlines per Rule 1103. File electronic Form 42 when flowline abandonment is complete. |
| Engineer | Form: (04)
401149471
11/18/2016 | 1) Shut in bradenhead after pumping cement. Check bradenhead pressure after weekend shut down, tag cement top and report bradenhead pressure to COGCC area engineer. |
| Environmental | Form: (04)
401536034
02/08/2018 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
401561615
11/19/2018 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
401787664
11/19/2018 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
401923287
03/18/2019 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
401938954
03/18/2019 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
401971166
03/18/2019 | Continue quarterly monitoring and sampling. |
| Environmental | Form: (04)
402210355
02/20/2020 | Based on review of the information provided, it appears that no further monitoring is necessary at this time and COGCC approves the abandonment of monitoring wells (MW-2, MW-4, MW-8, MW-12, MW-17, and MW-22) in accordance to the Division of Water Resources guidelines. REM 1815 shall remain open until the Operator demonstrates that the monitoring wells have properly been abandoned. |
| | Form: (04)
402354200
03/27/2020 | Based on a review of the information provided, it appears that no further action is necessary at this time and COGCC approves the closure request. Should conditions at the site indicate contaminant concentrations in soils exceeding COGCC standards, or, if surface or groundwater is found to be significantly impacted, further investigation and/or remediation activities may be required at the site. |