Laserfiche WebLink
IRCUD Well 5-4 Technical Memorandum <br />December 9, 2016 <br />Page 2 of 4 <br />JLA Geosciences, Inc. <br />the 2016 video were also present in the 2009 video, but the amount of scaling and growth was more <br />substantial in the 2016 video. A comparison of observations made during both the 2016 and 2009 well <br />videos are presented in the table below: <br />Depth <br />(Feet BPL) <br />7 <br />Observation <br />Top of casing joint is cracked and separated <br />2016 Well <br />Video <br />X <br />2009 Well <br />Video <br />X <br />27 <br />Top of casing joint is cracked and separated <br />X <br />X <br />26 <br />Bottom of casing joint is cracked and separated. <br />Grout is visible behind casing. <br />X <br />X <br />38 <br />Visible crack in casing. <br />Vertical scaling/growth on casing is extending <br />downward. Growth on the casing is more substantial in <br />the 2016 video. <br />X <br />X <br />46 <br />Casing joint appears separated with grout visible behind <br />casing. Vertical scaling/growth visible on casing <br />extending downward. Growth on the casing is more <br />substantial in the 2016 video. <br />X <br />X <br />52 <br />Casing is visually cleaner looking with less <br />scaling/growth <br />X <br />X <br />279 <br />Approximately 1 feet above a casing joint a <br />scaling/growth feature is visible extending upward <br />around the entire circumference of the well casing. <br />Well Casing below the ring appears to be irregular and <br />broken. Growth on the casing is more substantial in the <br />2016 video. <br />X <br />X <br />280 <br />Casing joint appears to be in good condition. <br />X <br />X <br />391-369 <br />Vertical scaling/growth visible on casing extending <br />upward. Growth on the casing is more substantial in the <br />2016 video. <br />X <br />X <br />415 <br />Base of PVC Casing <br />X <br />X <br />419-425 <br />Large chunks of grout lodged in the borehole. <br />Grout appears to have fallen out from behind the base <br />casing <br />X <br />X <br />640 <br />Water in the borehole is visually less clear <br />X <br />X <br />711 <br />Total Depth <br />X <br />X <br />jlageosciences.com <br />P107 <br />