Operational Range Assessment Program (ORAP) Phase II ... - E2S2

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Groundwater Results All transportable analytes below background and/or human screening criteria at range/installation boundary in surficial aquifer and within the deeper production wells Lithology indicated low hydraulic conductivity in surficial aquifer even near surface water bodies Data evaluation complete – report development underway
Lessons Learned in Proving the Concept • Application of Worst Case Scenario application • Similarities in models of source, pathway, and receptor between watersheds allowed for a focused approach • Establishing a baseline for storm event sampling • Installation of rain gauges, transducers and barometers in multiple watersheds identified parameters necessary for true storm transport • Comparison of multi-seasonal benthic sampling results • Multi-seasonal approach added value – very dry “dry” season • BMI habitat and SEM-AVS sediment analysis provided additional weight of evidence to support analytical data • Benefits of USEPA Method 1638 - only method to achieve QL 3x below screening criteria at site specific hardness
Page 1 and 2: Operational Range Assessment Progra
Page 3 and 4: ORAP Assessments use a phased appro
Page 5 and 6: Phase II Quantitative Assessment
Page 7 and 8: ORAP Phase II Pilot USAG Fort Jacks
Page 9 and 10: Surface Water System Study Overview
Page 11 and 12: Surface Water System Study Findings
Page 13 and 14: Groundwater System Study Overview
Page 15 and 16: Groundwater System Results Areal Ex
Page 17 and 18: Overall Phase II Recommendations -
Page 19 and 20: Installation Overview / Fast Facts
Page 21 and 22: Surface Water System Approach ‣Wo
Page 23 and 24: Surface Water System Results Surfac
Page 25: Groundwater Approach

Operational Range Assessment Program (ORAP) Phase II ... - E2S2

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