Under the EPA Construction General Permit (CGP), when is NPDES construction-stormwater permit coverage generally required for a New Mexico utility-line project?
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Question · Easy
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What is the primary purpose of a Stormwater Pollution Prevention Plan (SWPPP) on a GF-9 utility project?
A 0.4-acre water-main extension is Phase 2 of a subdivision whose total planned disturbance is 6 acres. Which stormwater statement is correct?
Question · Medium
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Who is the NPDES permitting authority for construction-stormwater CGP coverage on most New Mexico lands?
Where should a silt fence generally be installed to trap sediment from a utility spoil pile?
Why do SWPPPs require a stabilized construction entrance or exit on a tracked-up utility job?
How should concrete-truck washout from manhole bases or thrust blocks be handled on a permitted construction site?
For a routine EPA CGP site that is not discharging to a sensitive water, which inspection schedule is an allowed option?
Question · Hard
When may a contractor generally file a Notice of Termination and drop temporary stormwater controls on a CGP site?
What is the purpose of inlet protection at a curb inlet downstream of an open utility trench?
In urban-stormwater practice (ASCE-type water-quality design), why is the first flush of runoff from a newly disturbed right-of-way a special concern?
A GF-9 crew will refuel a rubber-tired backhoe on a CGP site. Which practice matches typical SWPPP good housekeeping?
When must the operator’s EPA CGP Notice of Intent generally be effective relative to starting earth-disturbing work?
Under OSHA 29 CFR 1926.652, when must each employee in an excavation be protected by an adequate cave-in protective system?
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OSHA’s excavation standard defines a competent person as someone who can identify existing and predictable hazards and who also:
A simple-slope trench in Type C soil is 8 feet deep with a 3-foot-wide bottom. Using OSHA’s maximum allowable Type C slope of 1½ horizontal to 1 vertical, what is the minimum top width?
What is OSHA’s maximum allowable simple slope for Type B soil in an excavation less than 20 feet deep?
A 22-foot-deep utility excavation will be sloped. Who must design the sloping or shielding system?
In a trench 4 feet or deeper, OSHA requires a stairway, ladder, ramp, or other safe egress so that no employee has more than how much lateral travel to reach it?
How far from the edge of an excavation must spoil, materials, and equipment be kept under OSHA 1926.651(j)(2) unless a retaining device is used?
When must the atmosphere in an excavation be tested before employees enter, if oxygen deficiency or a hazardous atmosphere could reasonably be expected?
When must a competent person inspect an excavation under OSHA 1926.651(k)?
For Type A soil, OSHA Appendix B allows a short-term maximum slope of ½:1 (63°) only when the excavation is no deeper than:
Employees must not work in an excavation with accumulated or accumulating water unless:
On a critical-path method (CPM) schedule, the critical path is the sequence of activities that:
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Total float on a scheduled activity is best described as:
A trench will yield 1,200 bank cubic yards (BCY). The soil swells 20 percent when excavated and later shrinks 10 percent from bank volume when compacted in the trench. How many loose cubic yards (LCY) must be hauled, and how many compacted cubic yards (CCY) will occupy the trench?
A written change order on a public utility contract is used to:
Why must pipe, fitting, and bedding submittals be approved before those materials are installed?
Temporary traffic control for an open utility trench in a public street should be set up according to which national standard, as adopted or referenced by New Mexico?
A backhoe loads trucks on a 3.0-minute cycle and averages 1.50 loose cubic yards per cycle. Using a 50-minute efficiency hour, what is the production?
What information should as-built (record) drawings for a completed utility line typically capture?
A survey benchmark on a utility project is:
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On a sewer or manhole drawing, invert elevation is the elevation of:
How many feet of pipeline lie between Station 12+40 and Station 18+15?
A grade stake at the trench centerline reads existing ground 5,210.40 and proposed invert 5,204.15. The pipe OD is 16 inches and the specified bedding below the invert is 6 inches. How deep must the excavation be below existing ground to the bedding subgrade?
Offset stakes are set beside a utility alignment primarily so that:
A plan notes a 4:1 side slope on a canal bank the utility line will cross. That slope means:
A manhole rim is elevation 5,124.50. The plans require 8.25 feet from rim to outgoing invert. What is the outgoing invert elevation?
Under New Mexico One Call practice (NMSA 62-14 and NM 811), how much advance notice must an excavator give before a standard (non-emergency) excavation?
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New Mexico’s tolerance zone requires the excavator to keep the cutting edge of mechanical equipment, including mechanical boring, how far from the marked edge of an underground facility until the line is exposed by hand or vacuum methods?
Under NMSA 62-14-5.1 and the APWA uniform color code, which color marks gas, oil, steam, or other gaseous materials?
What does white temporary marking indicate on a New Mexico excavation site?
How long are New Mexico locate markings valid after the two-working-day marking period ends?
When may a New Mexico excavator begin a standard excavation after calling 811?
If a GF-9 crew nicks a coated steel gas main or cuts a tracer wire, what must they do first?
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