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2026 Statistics
Key Facts: NM CID GF-1 Exam
70 Q
Official Combined Questions
PSI NM Contractor Bulletin 4/3/2026
75%
Passing Score Each Portion
PSI NM Contractor Bulletin 4/3/2026
USD 68.88
Specialty Exam Fee
PSI NM Contractor Bulletin 4/3/2026
NM CID GF-1 is GF Core (40 Q, free) plus a 30-question airports specialty, 75% each, USD 68.88 (bulletin 4/3/2026).
Sample NM CID GF-1 Practice Questions
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1Under the federal NPDES Construction General Permit, construction stormwater coverage is required when earth-disturbing activity will disturb which minimum area?
A.One acre or more, or less than one acre if part of a larger common plan of development or sale that will disturb one acre or more
B.5,000 square feet, regardless of a larger plan of development
C.Five acres or more only if the site discharges to a named river
D.Ten acres or more on airport property only
Explanation: The Clean Water Act NPDES construction-stormwater program, implemented through EPA's Construction General Permit (CGP), covers construction activity that disturbs one acre or more, and smaller sites that are part of a larger common plan of development or sale that will ultimately disturb one acre or more. Airport grading, haul roads, and stockpile areas count toward that acreage. Coverage is not limited to five- or ten-acre sites.
2In New Mexico (outside Indian country), which agency currently issues the Construction General Permit that authorizes stormwater discharges from a one-acre airport grading project?
A.The New Mexico Environment Department under a fully delegated state CGP
B.The New Mexico Construction Industries Division
C.The U.S. Environmental Protection Agency, using the federal CGP (NMR100000)
D.The Federal Aviation Administration under AC 150/5370-10
Explanation: New Mexico is one of the few states where EPA remains the NPDES permitting authority for construction stormwater. The 2022 federal CGP, permit number NMR100000, is the authorization used on most non-tribal New Mexico construction sites, including airport earthwork. CID issues contractor licenses and building permits; it does not issue NPDES stormwater permits. FAA AC 150/5370-10 Item C-102 specifies temporary erosion control on AIP work but does not replace the CGP.
3Before earth-disturbing work begins on a CGP-regulated airport site, the operator must prepare which document describing site-specific erosion, sediment, and pollution-prevention controls?
A.A Stormwater Pollution Prevention Plan (SWPPP)
B.A Construction Safety and Phasing Plan (CSPP)
C.A Contractor Quality Control Program (CQCP) only
D.An FAA Form 7460-1 obstruction notice
Explanation: The CGP requires each operator to develop and implement a Stormwater Pollution Prevention Plan that identifies operators, discharge points, and the erosion, sediment, and pollution-prevention controls that will be used. The SWPPP must be on site and updated as conditions change. A CSPP addresses airfield operational safety, a CQCP addresses material quality, and Form 7460-1 addresses airspace, not stormwater.
4Per the EPA CGP, sediment that has accumulated against a perimeter control such as a silt fence must be removed before it reaches which height?
A.The top of the fence fabric, regardless of height
B.One-quarter of the above-ground height of the perimeter control
C.One-half of the above-ground height of the perimeter control
D.The full height of the control plus 6 inches of freeboard
Explanation: EPA's CGP requires operators to remove sediment before it has accumulated to one-half the above-ground height of a perimeter control. Waiting until the fabric is overtopped allows sediment-laden water to leave the site. Item C-102 on FAA projects uses the same maintenance concept: perimeter BMPs must remain functional.
5On a New Mexico airport project authorized under the 2022 EPA CGP, when must downgradient sediment controls for the initial clearing and grading be installed?
A.After the first measurable storm so the designer can see the flow paths
B.Only after the subgrade has been proof-rolled
C.Only at final stabilization, just before the Notice of Termination
D.By the time earth-disturbing activities in that portion of the site have begun, unless infeasible
Explanation: The CGP requires that downgradient sediment controls for initial clearing, grading, and excavating be installed and made operational by the time those earth-disturbing activities begin, unless infeasible. Putting silt fence or equivalent controls in after the first storm, or waiting until proof-roll or closeout, leaves the site unprotected during the highest-erosion period.
6Under the 2022 EPA CGP, if a portion of a site will remain idle and the operator is not limiting concurrent disturbance to 5 acres or less, temporary stabilization of that portion generally must be completed within how many calendar days after stabilization is initiated?
A.3 calendar days
B.14 calendar days
C.7 calendar days
D.30 calendar days
Explanation: The 2022 CGP keeps a two-track stabilization deadline. Sites that keep concurrent disturbance at 5 acres or less may complete stabilization within 14 calendar days. If concurrent disturbance exceeds 5 acres, completion is required within 7 calendar days after stabilization is initiated. Initiation itself must begin immediately when earth-disturbing work has permanently or temporarily ceased on that portion of the site.
7Which FAA specification item covers temporary air and water pollution, soil erosion, and siltation control on an AIP-funded airport project?
A.Item C-102 Temporary Air and Water Pollution, Soil Erosion, and Siltation Control
B.Item C-100 Contractor Quality Control Program
C.Item P-152 Excavation, Subgrade, and Embankment
D.Item T-901 Seeding
Explanation: AC 150/5370-10 Item C-102 is the guide specification for temporary air and water pollution, soil erosion, and siltation control. It is the contract vehicle for silt fence, check dams, inlet protection, and similar BMPs on AIP work. C-100 is the contractor QC program, P-152 is earthwork, and T-901 is permanent seeding used for final vegetative cover.
8On a CGP-regulated site, where may concrete washout water from paving or miscellaneous concrete work be discharged?
A.Into the nearest storm inlet after it is filtered through a silt sack
B.Onto a vegetated infield if the wash water is less than 50 gallons
C.Into a lined, leak-proof washout containment area so that it does not reach storm drains or waters
D.Into the airport sanitary sewer without owner approval
Explanation: The CGP pollution-prevention requirements prohibit discharging concrete washout water to storm drains, surface waters, or the ground in a way that can reach waters of the United States. Washout must occur in a properly designed, leak-proof containment (a lined pit or manufactured washout) and the hardened residue must be disposed of as solid waste. A silt sack in an inlet is not authorized treatment for high-pH wash water.
9For most active CGP sites in New Mexico, one acceptable routine inspection schedule is at least every 14 calendar days and within 24 hours after a storm event that produces how much rainfall?
A.0.10 inch
B.0.50 inch
C.1.00 inch
D.0.25 inch
Explanation: The 2022 EPA CGP allows a 14-day routine inspection schedule paired with an inspection within 24 hours of a storm that produces 0.25 inch or more of rain. Operators may instead inspect every 7 calendar days. The 0.50-inch trigger used in some other state permits is not the EPA CGP value.
10Storm-inlet protection on an airport reconstruction project is intended primarily to do which of the following?
A.Keep sediment and construction debris out of the drainage system and receiving waters
B.Increase the design capacity of the existing storm-drain pipe
C.Replace the need for perimeter controls upslope of the inlet
D.Serve as the only stabilization method on a 10-acre disturbed area
Explanation: Inlet protection is a sediment-control BMP that intercepts soil and debris before they enter storm drains that discharge to waters or to the airfield drainage system. It does not increase hydraulic capacity, and it is a last line of defense, not a substitute for upslope perimeter controls or timely stabilization.
About the NM CID GF-1 Exam
The New Mexico CID GF-1 Airports classification requires the shared GF Core plus the GF-1 specialty examination. GF Core is 40 questions in 100 minutes with no charge. GF-1 Airports is 30 questions in 75 minutes for USD 68.88. Each portion requires 75% (bulletin updated 4/3/2026). Specialty references include Soils and Foundations (Liu/Evett) and FAA Advisory Circular AC 150/5370-10. This English-language MCQ bank is a study aid, not an official PSI form.
Assessment
GF Core plus GF-1 Airports specialty, retained as one classification identity.
Time Limit
175 minutes (100 + 75)
Passing Score
75% on GF Core (30 of 40) and 75% on GF-1 (23 of 30)
Exam Fee
USD 68.88 (GF Core has no charge) (PSI Services LLC (for New Mexico Construction Industries Division))
NM CID GF-1 Exam Content Outline
57%
GF Core
Stormwater, OSHA, project management, surveying, NM One Call, building code/inspections (40 official items)
43%
GF-1 Airports Specialty
Sitework, runways, FAA regulations, lighting (30 official items)
How to Pass the NM CID GF-1 Exam
What You Need to Know
- Passing score: 75% on GF Core (30 of 40) and 75% on GF-1 (23 of 30)
- Assessment: GF Core plus GF-1 Airports specialty, retained as one classification identity.
- Time limit: 175 minutes (100 + 75)
- Exam fee: USD 68.88 (GF Core has no charge)
Keys to Passing
- Work through all 100 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
NM CID GF-1 Study Tips from Top Performers
1Runways are 15 of 30 specialty items. Study FAA AC 150/5370-10 with GF Core stormwater and NM One Call.
2This bank is an English-language MCQ study aid, not an official PSI form
Frequently Asked Questions
Do I take a separate GF Core exam?
Yes. PSI requires all GF candidates to take the shared GF Core (40 questions, no charge) plus the classification specialty. This bank treats them as one GF-1 identity.