Res 2001-006 - Laserfiche WebLink

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According to correspondence received from the Texas Natural Resource Conservation Commission (TNRCC), Caldwell and Hayes Counties are in attainment for six criteria air pollutants as designated by EPA pursuant to Section 107 of the Clean Air Act, therefore "General Conformity does not apply". Also, the proposed development plan would result in short -term air emissions resulting from the actual construction activities, although these actions pose no significant impact upon air quality standards. During construction of proposed development items, steps should be taken to minimize the amount of particulate matter (dust) generated, including incidental emissions caused by strong winds, as well as tracking of dirt off the construction sites by machinery and trucks. Permits may be required for ancillary construction facilities such as concrete or asphalt batch plants involved in the improvement projects. WATER QUALITY Airport activities can have a major impact on water quality. The Clean Water Act provides the authority to establish water quality standards, control discharges into surface and subsurface waters, develop waste management treatment plans, and issue permits for discharges and for dredged or fill materials. Construction of the proposed improvements will result in an increase in impermeable surfaces and a resulting increase in surface runoff from both landside and airside facilities. The proposed development might result in short-term impacts on water quality, particularly suspended sediments, during and shortly after precipitation events during the construction phase. Recommendations established in FAA Advisory Circular 150/5370-10 Standards for Specifying Construction of Airports, Item P-156, Temporary Air and Water Pollution, Soil Erosion and Siltation Control should be incorporated in project design specifications to mitigate potential impacts. These standards include temporary measures to control water pollution, soil erosion, and siltation through the use of fiber mats, gravel, mulches, slope drains, and other erosion control methods. In accordance with Section 402(p) of the Clean Water Act, a National Pollution Discharge Elimination System (NPDES) General Permit is required from the Environmental Protection Agency. NPDES requirements apply to industrial facilities, including airports and all construction projects that disturb five or more acres ofland. With regard to construction activities, the City of San Marcos and all applicable contractors will need to comply with the requirements and procedures of the NPDES General Permit, including the preparation of a Notice of Intent and a Stormwater Pollution Prevention Plan, prior to the initiation of project construction activities. A-7