SBCT Final EIS - Govsupport.us

Chapter 5 – Environmental Consequencesbe removed from any part of the installation without written authorization from a duly appointedUSAG Alaska representative.If contaminated soils, drums, unexploded ordnance or unusual debris are found on or around the worksite, the agency or contractor shall stop work immediately and notify the local Range Control Officerand Public Works Environmental Office. Work at this site will be suspended until Range Controlclears the area. Contaminated soils or groundwater must be tested, stockpiled for removal, and takenoff-site for remediation as soon as possible based on funding availability. All military units using thesites will be required to possess and have available appropriate spill response materials for the typesand quantities of hazardous materials/substances they may transport. All spills/releases at DonnellyTraining Area or Fort Richardson will be reported to Fort Wainwright or Fort Richardson’s FireDepartment and Environmental Departments, respectively. The USAG Alaska EnvironmentalDepartment will make the appropriate notifications to the Alaska Department of EnvironmentalConservation (ADEC). All appropriate remediation measures will be accomplished.5.3.2.2 Impacts from Range ConstructionSignificant Impacts Mitigable to Less than SignificantImpact 2: Soil Erosion Resulting from Range Construction Activities. Construction of new weaponstraining ranges at FRA is expected to cause direct, short-term, localized soil erosion impacts whenground surfaces are disturbed to construct weapons training range features. Upgrading an existingrange to the required MPMG range would involve only existing disturbed ground, and upgrading theUAC would not require any new ground disturbance. Potential increases in soil erosion caused byrange construction would be temporary because construction of the structures and other featuresassociated with weapons training ranges would create bare land only periodically. Additionally, theArmy would construct stormwater runoff control structures as necessary as part of standard BMPs,which would divert water from the construction sites. Other standard range-maintenance measuressuch as road grading, target repair, and berm recontouring, would reduce erosion. Compared toexisting conditions, increased soil erosion resulting from range construction activities is expected tobe short-term, local, and less than significant. With implementation of standard construction, BMPsand the land management practices specified in the USARAK INRMP and ITAM annual work plan.Regulatory and Administrative Mitigation 2: Implementation of standard construction BMPs and theland management practices specified in the USARAK INRMP and ITAM annual work plan wouldreduce these impacts to less than significant.Less than Significant ImpactsVolcanic and Seismic Hazards. Similar to cantonment construction, construction of new ranges onFRA are not expected to have any effect on the frequency of volcanic eruptions or earthquakes;therefore, the impact would be the hazards associated with the ranges being constructed in areas inwhich volcanic and seismic hazards exist. The impacts associated with seismic and volcanic hazardsduring range construction are considered less than significant because existing warning systems aregenerally expected to provide the possibility of warning of an earthquake or eruption such thatpersonnel and equipment would likely have time to evacuate.Exposure to Soil Contaminants. Because of the nature and type of training conducted in the past(especially prior to 1986), previously unidentified contamination could be found. All work involvingthe modification of facilities or excavation of any kind shall be coordinated via the USAG-AK "WorkClearance Permit" a minimum of five working days prior to mobilization to the site. CoordinationFebruary 2008 5-74 2/25th SBCT Final EIS