environmental assessment us border patrol, tucson sector

5-312345678910111213141516171819202122232425262728293031323334353637383940414243445.5 AIR QUALITYBMPs will include suitable fencing to restrict traffic within the project area in order to reducesoil disturbance. Soil watering will be utilized to minimize airborne particulate matter createdduring construction activities. Bare ground will be covered with hay or straw to lessen winderosion between facility construction and landscaping. After the construction is completed, allareas with vehicle traffic will be paved or treated to reduce the potential for fugitive dust, andlandscaping will be designed to prevent or lessen wind fugitive dust creation. Additionally, allconstruction equipment and vehicles will be kept in good operating condition to minimizeexhaust emissions.5.6 WATER RESOURCESStandard construction procedures will be implemented to minimize the potential for erosion andsedimentation during construction. All ground disturbance work will cease during heavy rainsand will not resume until conditions are suitable for the movement of equipment and material.Because the impact area is greater than 1 acre, as part of the NPDES permit process, a SWPPP,and NOI will be submitted to the USEPA/AZDEQ prior to the start of construction.Sedimentation and pollution of surface waters by fuels, oils, and lubricants will be minimizedthrough the implementation of the SWPPP. The construction of the proposed FOB willincorporate the proper stormwater retention measures, including a retention pond. All fuel tankswill be double-walled to prevent leaks from entering the groundwater. Proper wastewaterdisposal will be accomplished by using an on-site wastewater treatment system.5.7 NOISEDuring the construction phase, short-term noise impacts are anticipated. All OSHA requirementswill be followed. To lessen noise impacts on the local wildlife communities, construction willonly occur during daylight hours, whenever possible. All motor vehicles will be maintained toreduce the potential for vehicle-related noise.To minimize disturbances from helicopter use, the USBP will review landing and takeoff routesto determine what actions could be taken, such as alternating or rotating routes, and timing theuse of different routes to reduce noise effects on wildlife or residents in the San BernardinoValley. All helicopters will be maintained and operated to reduce the potential for engine-relatednoise.5.8 SOLID AND HAZARDOUS WASTESCare will be taken to avoid impacting the project area with hazardous substances (e.g., antifreeze,fuels, oils, lubricants) used during construction. Although catch pans will be used whenrefueling, accidental spills could occur as a result of maintenance procedures to constructionequipment. However, the amount of fuel, lubricants, and oil is limited, and equipment necessaryto quickly contain any spills will be present when refueling.Douglas FOB EADraftAugust 2011