NGA 71 Excavation and Backfilling: Student Manual Exam Questions And Correct Answers

Dial _________ to reach the Call Before You Dig Notification Center and start the utility marking process before excavation - Answer G. 811 A ________________ is required before any kind of proposed excavation or emergency excavation can take place - Answer C. locate request Under normal circumstances, if the Call Before You Dig Notification Center is notified at 10:00 AM on Monday, you can begin excavation at 7:00 AM the following ________________. - Answer D. Thursday A hazardous leak is an example of a situation that may require a(n) ________________. - Answer J. emergency excavation Unless otherwise specified in company-specific procedures or state or local requirements, the tolerance zone is ________________ inches. - Answer A. 24 Soil used for backfill should be clean and ________________. - Answer B. dry Using a backhoe for compaction could result in poor compaction or ________________. - Answer H. pipe damage If utility markings are not legible, you should contact 811 Call Before You Dig and the ________________ if known before excavating. - Answer E. utility Municipal electric systems - Answer G. safety red Oil and gas distribution and transmission - Answer F. high visibility safety yellow Cable television - Answer C. safety alert orange Potable water - Answer H. safety precaution blue Sewer and storm drainage systems - Answer B. safety green