Which construction activity is not covered under the CGP?

Which construction activity is not covered under the CGP?

• A. Routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility.
• B. Grading for new construction.
• C. Installation of new features not altering the original design.
• D. Landscaping improvements.

Answer: (A)

The main idea here is that the Construction General Permit (CGP) regulates stormwater from activities that disturb soil for new construction or significant site changes. Routine maintenance that keeps an existing facility as it was designed—maintaining its original line and grade, hydraulic capacity, or original purpose—does not create new disturbance or change the facility, so it falls outside the CGP. That’s why routine maintenance to preserve the original configuration is the best answer: it doesn’t count as new construction or a modification that would trigger CGP requirements. The other activities involve altering the site or creating new soil disturbance. Grading for new construction changes the land surface and is a clear construction activity under CGP. Installing new features is a modification that typically disturbs soil, which brings it under CGP coverage. Landscaping improvements usually involve soil disturbance as well and can fall under CGP if the project meets the established thresholds.

The main idea here is that the Construction General Permit (CGP) regulates stormwater from activities that disturb soil for new construction or significant site changes. Routine maintenance that keeps an existing facility as it was designed—maintaining its original line and grade, hydraulic capacity, or original purpose—does not create new disturbance or change the facility, so it falls outside the CGP.

That’s why routine maintenance to preserve the original configuration is the best answer: it doesn’t count as new construction or a modification that would trigger CGP requirements.

The other activities involve altering the site or creating new soil disturbance. Grading for new construction changes the land surface and is a clear construction activity under CGP. Installing new features is a modification that typically disturbs soil, which brings it under CGP coverage. Landscaping improvements usually involve soil disturbance as well and can fall under CGP if the project meets the established thresholds.