Laserfiche WebLink
III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made during the <br />inspection. Comments also describe any enforcement actions taken during the inspection and the facts or <br />evidence supporting the enforcement action. <br />One bag of Kwik-Plug was slowly emptied into the borehole, Again, the tag weight was lowered into <br />the hole to determine the depth to the top of the plugged casing section, which was now at 330 feet. <br />The coiled pipe was lowered down the borehole to the bottom of the plugged hole. The pumper on the <br />cement truck was connected to the other end of the coiled pipe on the large spool. <br />During the operation up to this point, the cement was mixing in the cement truck. The cement mixture <br />was weighed to ensure that there was proper hydration of the cement. When the cement mixture was <br />properly hydrated, 200 gallons of the cement mixture were injected into the coiled pipe and down the <br />borehole. This amount of cement filled the coiled pipe as well as 100 feet of the borehole. Ahead of the <br />cement injection, water was run to wet the pipe and hydrate the Kwik-Plug that was sitting on top of <br />the inflatable packer. When the pumping of the cement was finished, the injection pipe was raised <br />about 80 feet. Then, another 100 gallons of cement were injected into the borehole through the pipe, <br />which filled the borehole by another 100 feet. In this way, the end of the injection pipe was never <br />above the cement in the borehole. <br />Unfortunately, with about 100 feet of borehole remaining to be filled, the coiled pipe burst due to <br />excessive internal pressure. Apparently, small chips of hardened cement got past the two screeners on <br />the cement truck and clogged up the coiled pipe in several locations. The borehole sealing operation <br />had to be suspended until the pipe was repaired. The consultant described the remaining steps in the <br />sealing process. Once the cement hardened in the borehole, the tag weight would be used to determine <br />the new bottom of the partially sealed borehole. Cement would be injected into the borehole, making <br />sure that the injection pipe outlet end never got above the cement that was being injected. Once the <br />borehole casing was completely filled with cement, the casing would be covered in three feet of dirt <br />and marked with a stake. The field inspection was terminated at this point. <br />c:/word/bowie2/insp0905b <br />