AIRPORTS DESK REFERENCE
CHAPTER 6. CONSTRUCTION IMPACTS
INTRODUCTION. Airport construction may cause various environmental effects
primarily due to dust, aircraft and heavy equipment emissions, storm water runoff containing sediment and/or spilled or leaking petroleum products and noise. In most
cases, these effects are subject to Federal, State, or local ordinances or regulations. While the long-term impacts of the proposed action are usually greater than construction impacts, sometimes construction may also cause significant short-term impacts. Descriptions of the many construction impacts associated with airport actions are often covered in the descriptions of other environmental impact categories. Therefore, to avoid repeating information in chapters of an environmental assessment (EA) or environmental impact statement (EIS) that address a specific environmental resource, a document’s construction
impacts chapter, if one is prepared, should describe the general types and natures of construction-related impacts and the measures proposed to minimize potential, construction-induced adverse effects.
APPLICABLE STATUTES AND IMPLEMENTING REGULATIONS.
At the Federal level, construction impacts often concern water and air quality effects and, to a lesser extent, noise. The National Pollutant Discharge Elimination System (NPDES) permitting program contained in 40 Code of Federal Regulations (CFR) Part 122 addresses construction disturbances of 1 acre or more. General Conformity regulations in 40 CFR Part 93, Subpart B, address construction effects in nonattainment or maintenance areas. See Chapters 1 and 20 of this Desk Reference for more information on evaluating project effects on air quality and water quality, respectively. For other resources, analyses done to meet Federal laws, regulations, and guidelines would govern how to assess construction effects on those resources.
APPLICABLE STATUTES AND IMPLEMENTING REGULATIONS
SUMMARY DESCRIPTION Part 122.26(a)(9) requires an NPDES permit for storm water discharges due to “small construction activity” (i.e., disturbing 1 acre, but less than 5 acres).
40 CFR, Part 122, NPDES
Part 122.26(a)(1)(ii) requires an NDPES permit for storm water discharges due to construction activities disturbing at least 5 acres of land.
U.S. Environmental Protection Agency (EPA) or a state to which EPA has delegated NPDES authority.
In both instances, the discharge must be covered under an NPDES industrial storm water permit, unless another individual or general NPDES permit already covers the construction discharge.