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Catalog Record: 2019 Final Spring Breakup Monitoring Reports and Culvert Reports for GMT1, GMT2 and Colville River Delta (CRD)
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CPAI
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2019 Final Spring Breakup Monitoring Reports and Culvert Reports for GMT1, GMT2 and Colville River Delta (CRD)

GMT1/MT6 Spring Breakup Monitoring and Hydrological Assessment: Prior assessments were completed by Michael Baker International for 2003,2005, 2007, 2009,2010, 2011, 2013 and 2014. The 2019 report is the 3rd year of post-construction monitoring and assessment along the GMT1/MT6 access road and pad that were constructed in 2017. Field work included stage and discharge measurements at key locations. Observations of ice jams, ice road crossing degradation, drainage structure performance and post-breakup floodwater effects on infrastructure were recorded.

Colville River Delta Spring Breakup Monitoring and Hydrological Assessment: This assessment represents the 28th consecutive year of spring breakup monitoring in the Colville River Delta. Breakup and downstream flow of river ice typically occurs during a three week period in May and June and historically causes flooding. Water surface elevations and discharge were measured at key locations. Event was documented with visual observations and photography. Following breakup roads, pads and drainage structures were assessed for erosion and damage.

GMT1 and GMT2 Culvert Monitoring: This report addresses culvert performance and evaluation of areas where additional culverts of modifications to existing culverts are necessary to maintain natural drainage. This meets hydrology monitoring requirements of the U.S. Army Corps of Engineers permits for GMT1/MT6 and GMT2/MT7. These permits require annual access road culvert monitoring reports to be submitted for three years post-construction. Spring breakup monitoring began on April 19 and concluded on June 5, 2019. The GMT1/MT6 access road, pad and a portion of the pipeline were constructed, and 71 culverts were installed during the winter of 2016-17. One culvert was installed in Sept 2017. This is the third and final year of required reporting. The GMT2 access road and pad and 80 culverts were installed during the winter of 2018-2019. This is the first year of reporting.

Complete
2019-04-19
2019-09-11

Data and Resources

  • Download

    Download :: Colville River Delta 2019 Spring Breakup Monitoring and Hydrological Assessment

    2019 CRD Spring Breakup Monitoring and Hydrological Assessment Final.pdf (40.3 MB)

  • Download

    Download :: GMT1 and MT6 2019 Spring Breakup Monitoring and Hydrological Assessment

    2019 GMT1-MT6 Spring Breakup Summer Monitoring Hydrological Final.pdf (27.6 MB)

  • Download

    Download :: GMT1 2019 Spring Breakup Culvert Monitoring Report

    2019_FINAL_GMT1_Spring_Breakup_Culvert_Monitoring_Report.pdf (38.4 MB)

  • Download

    Download :: GMT2 2019 Spring Breakup Culvert Monitoring Report

    2019_FINAL_GMT2_Spring_Breakup_Culvert_Monitoring_Report.pdf (37 MB)

Status: Complete
Start Date: 2019/04/19
Type: Report
End Date: 2019/09/11
Data Types: Report
Primary Contacts
Name: CPAI Environmental Studies Coordinator
Email: n1798@conocophillips.com
Primary Organizations
Type
Michael Baker Coorporation
Industry/Consultants

Funding Organization
Type
ConocoPhillips
Industry/Consultants

Regions
North Slope

Collections
ConocoPhillips Environmental Studies

Direct Record Link
http://catalog.northslopescience.org/catalog/entries/8987-
Direct Full Map Link
http://catalog.northslopescience.org/catalog/entries/8987-/map