Several lower outlets in small retention dams high in the Sierra mountains required assessment. Hibbard Inshore flew the ROV and dive equipment to the area by helicopter. A diver burned open the trash rack and inserted the crawler. The crawler inspected several of the steel lower outlets while flooded visually and with a UT gauge. The crawler also inspected one of the dry outlets visually and measured the alignment using a pipe laser and a target on the crawler. The alignment was performed to determine if the pipe could be lined.
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