FINAL VAPOR INTRUSION STUDY REPORT FOR JOINT BASE ELMENDORF–RICHARDSON RESTORATION PROGRAM SITES, ALASKA Prepared for: Department of the Air Force 722 ESS/PKB 2261 Hughes Avenue, Suite 163 Lackland Air Force Base, TX 78236-9853 Contract FA8903-08-D-8772 Task Order 0066 Prepared by: HydroGeoLogic, Inc. 581 Boston Mills Road, Suite 600 Hudson, OH 44236 June 2018 FINAL VAPOR INTRUSION STUDY REPORT FOR JOINT BASE ELMENDORF–RICHARDSON RESTORATION PROGRAM SITES, ALASKA Prepared for: Department of the Air Force 722 ESS/PKB 2261 Hughes Avenue, Suite 163 Lackland Air Force Base, TX 78236-9853 Contract FA8903-08-D-8772 Task Order 0066 Prepared by: HydroGeoLogic, Inc. 581 Boston Mills Road, Suite 600 Hudson, OH 44236 June 2018 This page was intentionally left blank. TABLE OF CONTENTS Page 1.0 INTRODUCTION ................................................................................. 1-1 1.1 SCOPE OF WORK ....................................................................... 1-1 1.2 PROJECT OBJECTIVES ............................................................... 1-2 1.3 PROJECT ORGANIZATION .......................................................... 1-2 2.0 BACKGROUND ................................................................................... 2-1 2.1 JBER REGULATORY HISTORY .................................................... 2-1 2.1.1 Installation History ............................................................ 2-1 2.1.2 Regulatory Background ...................................................... 2-2 2.1.3 National Priorities Listing ................................................... 2-3 2.2 JBER PHYSICAL SETTING ........................................................... 2-5 2.2.1 Climate .......................................................................... 2-5 2.2.2 Regional Geology.............................................................. 2-5 2.2.3 Surficial Geology .............................................................. 2-6 2.2.4 JBER-E Hydrogeology ....................................................... 2-7 2.2.5 JBER-R Hydrogeology ....................................................... 2-8 2.2.6 Surface Water .................................................................. 2-9 3.0 INITIAL SCREENING ........................................................................... 3-1 3.1 BUILDING LOCATION EVALUATION ........................................... 3-1 3.2 BUILDING USE EVALUATION ..................................................... 3-2 3.3 BUILDING DESIGN AND CONSTRUCTION EVALUATION ............... 3-2 3.4 POTENTIAL BUILDINGS OF INTEREST LIST ................................. 3-3 3.5 CHEMICALS OF INTEREST ......................................................... 3-3 4.0 BUILDING SURVEYS ........................................................................... 4-1 4.1 BUILDING SURVEY PROCEDURES .............................................. 4-1 4.2 BUILDING SURVEY COMPLETION STATUS .................................. 4-2 4.3 BUILDING SURVEY FINDINGS .................................................... 4-3 4.3.1 High Priority ................................................................... 4-3 4.3.2 Moderate Priority .............................................................. 4-4 4.3.3 Low Priority .................................................................... 4-4 5.0 BUILDINGS OF INTEREST .................................................................... 5-1 5.1 JBER-E BUILDINGS OF INTEREST ................................................ 5-1 5.1.1 Site CG704 ..................................................................... 5-1 5.1.2 Site DP098 ...................................................................... 5-2 5.1.3 Site FT023 ...................................................................... 5-2 5.1.4 Site SD029 ...................................................................... 5-3 5.1.5 Site SS022 ...................................................................... 5-3 5.1.6 Site ST032 ...................................................................... 5-3 5.1.7 Site ST036 ...................................................................... 5-3 Air Force Civil Engineer Center i TABLE OF CONTENTS (continued) Page 5.1.8 Site ST037 North .............................................................. 5-4 5.1.9 Site ST037 South .............................................................. 5-5 5.1.10 Sites ST037 Slammer Avenue/TU091 ..................................... 5-6 5.1.11 Site ST048 ...................................................................... 5-7 5.1.12 Site ST068 ...................................................................... 5-8 5.2 JBER-R BUILDINGS OF INTEREST ................................................ 5-8 5.2.1 Site DA089 ..................................................................... 5-8 5.2.2 Site TU064 ...................................................................... 5-9 6.0 DATA QUALITY OBJECTIVES .............................................................. 6-1 6.1 STATE THE PROBLEM ............................................................... 6-1 6.2 IDENTIFY THE GOALS OF THE STUDY ........................................ 6-2 6.3 IDENTIFY INFORMATION INPUTS ............................................... 6-3 6.4 DEFINE THE BOUNDARIES OF THE STUDY .................................. 6-3 6.5 DEVELOP THE ANALYTIC APPROACH ........................................ 6-4 6.6 SPECIFY PERFORMANCE OR ACCEPTANCE CRITERIA .................. 6-5 6.7 DEVELOP THE DETAILED PLAN FOR OBTAINING DATA ............... 6-6 7.0 FIELD DATA COLLECTION SUMMARY ................................................. 7-1 7.1 FIELD SAMPLING PROGRAM IMPLEMENTATION ......................... 7-1 7.2 GENERAL IMPLEMENTATION .................................................... 7-1 7.2.1 Field Staffing ................................................................... 7-1 7.2.2 VI Sample Duration ........................................................... 7-1 7.2.3 Atmospheric Conditions and Ambient Air Monitoring ................. 7-2 7.2.4 VI Sample Documentation ................................................... 7-2 7.2.5 VI Sampling Equipment Protection ........................................ 7-3 7.3 FIELD SAMPLING PROCEDURES ................................................. 7-3 7.3.1 Ambient Air .................................................................... 7-4 7.3.2 Soil Gas ......................................................................... 7-4 7.3.2.1 Sub-Slab Soil Gas Sampling ................................... 7-4 7.3.2.2 Near-Slab Soil Gas Sampling .................................. 7-5 7.4 JBER-E SITES SAMPLING DESIGN AND RATIONALE...................... 7-5 7.4.1 Site CG704 ..................................................................... 7-6 7.4.1.1 Building 8691 ..................................................... 7-6 7.4.2 Site DP098 ...................................................................... 7-6 7.4.2.1 Building 18220 ................................................... 7-6 7.4.2.2 Building 18224 ................................................... 7-6 7.4.3 Site FT023 ...................................................................... 7-7 7.4.3.1 Building 17534 ................................................... 7-7 7.4.4 Site SD029 ...................................................................... 7-7 7.4.4.1 Building 16716 ................................................... 7-7 7.4.5 Site SS022 ...................................................................... 7-7 Air Force Civil Engineer Center ii TABLE OF CONTENTS (continued) Page 7.4.5.1 Building 12755 ................................................... 7-7 7.4.6 Site ST032 ...................................................................... 7-8 7.4.6.1 Building 13272 ................................................... 7-8 7.4.7 Site ST036 ...................................................................... 7-8 7.4.7.1 Building 27369 ................................................... 7-8 7.4.8 Site ST037 North .............................................................. 7-8 7.4.8.1 Building 6211 ..................................................... 7-8 7.4.8.2 Building 7228 ..................................................... 7-9 7.4.8.3 Building 7265 ..................................................... 7-9 7.4.8.4 Building 7309 ..................................................... 7-9 7.4.8.5 Building 8288 ................................................... 7-10 7.4.8.6 Building 8326 ................................................... 7-10 7.4.9 Site ST037 South ............................................................ 7-10 7.4.9.1 Building 4228 ................................................... 7-10 7.4.9.2 Building 4230 ................................................... 7-11 7.4.9.3 Building 4314 ................................................... 7-11 7.4.9.4 Buildings 5208A/5211A ...................................... 7-11 7.4.9.5 Building 5223 ................................................... 7-12 7.4.10 Sites ST037 Slammer Avenue/TU091 ................................... 7-12 7.4.10.1 Building 7535 ................................................... 7-12 7.4.10.2 Building 8515 ................................................... 7-12 7.4.10.3 Building 8559 ................................................... 7-13 7.4.10.4 Building 8574 ................................................... 7-13 7.4.11 Site