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Thomes Avenue Mercury Spill

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EPA START contractor monitoring for mercury along drainage.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1215908<br />Longitude: -104.812180888889<br />Tags: Story Map
EPA START contractor sampling towards Crow Creek for mercury.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1222169<br />Longitude: -104.811352888889<br />Tags: Story Map
EPA START contractor sampling downstream in Crow Creek for mercury.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.12205615<br />Longitude: -104.811188166667<br />Tags: Story Map
EPA START contractor monitoring for mercury in storm drain.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1218388888889<br />Longitude: -104.811822222222<br />Tags: Story Map
Sample containers drawn from Crow Creek.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1221844833333<br />Longitude: -104.811264972222<br />Tags: Story Map
Sample containers drawn from along Crow Creek.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1221202833333<br />Longitude: -104.811189055556<br />Tags:
EPA contractor monitoring for mercury along drainage.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1216138888889<br />Longitude: -104.812522222222<br />Tags: Story Map
Location of mercury spill at W 5 St and Deming Dr<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.121952<br />Longitude: -104.811544583333<br />Tags: Story Map
EPA response truck on site.<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.1217027777778<br />Longitude: -104.812180555556<br />Tags: Story Map
EPA ERRS contractor vacuuming up visible mercury in the background.<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.1217027777778<br />Longitude: -104.812180555556<br />Tags: Story Map
Visible mercury seen along drainage.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.1217027777778<br />Longitude: -104.812186111111<br />Tags: Story Map
EPA ERRS contractor vacuuming visible mercury.<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.1216805555556<br />Longitude: -104.812186111111<br />Tags: Story Map
Vacuum operations removing visible mercury.<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.12168517<br />Longitude: -104.81214862<br />Tags: Story Map
EPA START contractor monitoring opposite side of street from spill area.<br />Date Taken: 9/10/2019<br />Category: Assessment<br />Latitude: 41.12191308<br />Longitude: -104.8121535<br />Tags: Story Map
Visible Mercury<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.12168517<br />Longitude: -104.81214862<br />Tags:
Screening drainage area after vacuum operations and Mercon-X application<br />Date Taken: 9/10/2019<br />Category: Post-Removal<br />Latitude: 41.12190867<br />Longitude: -104.81165222<br />Tags: Story Map
Pipe completely removed. Excavated to about 5 ft bgs. Elevated Hg reading observed from hole.<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.12170338<br />Longitude: -104.81221573<br />Tags: Story Map
Vac truck excavation of Manhole 02 (MH02)<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.12170863<br />Longitude: -104.81214598<br />Tags: Story Map
Cheyenne Board of Public Utilities jackhammering/removing valve box at Manhole 02 (MH02)<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.1216423<br />Longitude: -104.8122766<br />Tags: Story Map
START personnel screening the Vac truck air filters for mercury vapors after it had been used to clean out a valve box. No mercury was detected<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.1359746555556<br />Longitude: -104.833157583333<br />Tags:
Spill source post removal<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.12169453<br />Longitude: -104.81242871<br />Tags:
MH02<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.121746<br />Longitude: -104.812212<br />Tags:
Post removal screening<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.12189608<br />Longitude: -104.81163151<br />Tags:
Groundwater infiltrating MH-02 excavation<br />Date Taken: 9/10/2019<br />Category: Removal<br />Latitude: 41.121746<br />Longitude: -104.812212<br />Tags:
Screening vac truck<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.1360457777778<br />Longitude: -104.833216083333<br />Tags:
Soil stockpile<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.13607013<br />Longitude: -104.83317995<br />Tags:
Covered soil and drums for disposal.<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.13604284<br />Longitude: -104.83307309<br />Tags:
Vac truck<br />Date Taken: 9/11/2019<br />Category: Post-Removal<br />Latitude: 41.13604284<br />Longitude: -104.83307309<br />Tags:
Cap to MH-01. Log book used for scale. <br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12174963<br />Longitude: -104.81218728<br />Tags:
Utilities view from NW corner of intersection<br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12161882<br />Longitude: -104.8122232<br />Tags:
BHE utility marking<br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12161882<br />Longitude: -104.8122232<br />Tags:
View toward spill area <br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12174387<br />Longitude: -104.81204055<br />Tags:
Utilities <br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12161882<br />Longitude: -104.8122232<br />Tags:
Utilities view from NE corner of intersection<br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12161882<br />Longitude: -104.8122232<br />Tags:
Intersection of W 5 St and Thomes Ave<br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12164238<br />Longitude: -104.81217203<br />Tags:
Cap on MH-03 and view toward spill area<br />Date Taken: 9/19/2019<br />Category: Post-Removal<br />Latitude: 41.12166195<br />Longitude: -104.81237762<br />Tags:





EPA START contractor monitoring for mercury along drainage. EPA START contractor sampling towards Crow Creek for mercury. EPA START contractor sampling downstream in Crow Creek for mercury. EPA START contractor monitoring for mercury in storm drain. Sample containers drawn from Crow Creek. Sample containers drawn from along Crow Creek. EPA contractor monitoring for mercury along drainage. Location of mercury spill at W 5 St and Deming Dr EPA response truck on site. EPA ERRS contractor vacuuming up visible mercury in the background. Visible mercury seen along drainage. EPA ERRS contractor vacuuming visible mercury. Vacuum operations removing visible mercury. EPA START contractor monitoring opposite side of street from spill area. Visible Mercury Screening drainage area after vacuum operations and Mercon-X application Pipe completely removed. Excavated to about 5 ft bgs. Elevated Hg reading observed from hole. Vac truck excavation of Manhole 02 (MH02) Cheyenne Board of Public Utilities jackhammering/removing valve box at Manhole 02 (MH02) START personnel screening the Vac truck air filters for mercury vapors after it had been used to clean out a valve box. No mercury was detected Spill source post removal MH02 Post removal screening Groundwater infiltrating MH-02 excavation Screening vac truck Soil stockpile Covered soil and drums for disposal. Vac truck Cap to MH-01. Log book used for scale. Utilities view from NW corner of intersection BHE utility marking View toward spill area Utilities Utilities view from NE corner of intersection Intersection of W 5 St and Thomes Ave Cap on MH-03 and view toward spill area