Fort Indiantown Gap, Pennsylvania Military M unitions Munitions Response Response Program Program coc et A rea Remedi l a I nvesti tiga tig tion

Transcription

1 Fort Indiantown Gap, Pennsylvania Military Munitions Response Program Ricochet Area Remedial Investigation Community Interest Group Meeting 6 October M

2 Overview Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Remedial Investigation Objectives Remedial Investigation Results Next Step Feasibility Study 2

3 Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and Military Munitions Response Program (MMRP) Flow Chart CERCLA Preliminary Assessment Site Inspection Remedial Investigation Feasibility Study GOALS Identify Releases Needing Further Investigation Characterize Site, Risk Assessment Evaluate Alternatives & Identify Preferred Remedy Note: CERCLA activities after Remedial Investigation contingent upon risk evaluation Current Stage of MMRP Work Contracted to WESTON Proposed Plan Public Comment Decision Document Remedial Design Remedial Action Propose Selected Remedy Public Participation Authorize Selected Remedy Design/Work Plan for Remedy Implement Chosen Remedy 3

4 Remedial Investigation Objectives Investigate the Ricochet Area to determine: The nature and extent of munitions and explosives of concern (MEC). If MEC is present, assess the explosive safety hazards. Characterize the nature and extent of munitions constituents (MC) metals and explosives contamination. Perform a hazard assessment for MEC and a baseline risk assessment for MC. 4

5 Graphical CSM 5

6 Visual Surveys with Analog Instrumentation Transect Survey Adjacent to Rail Trail Survey in Stony Creek 6

7 Analog Instrumentation Transects Analog Transect Personnel with GPS Analog Transect Personnel 7

8 DGM Grid Data Collection Geophysical Data Collection 8

9 Geophysical Survey Grids 50x50 ft Grid; Geophysically Mapped 100x100 ft Grid; Geophysically Mapped 9

10 DGM Grid Data Reacquisition Reacquiring DGM Anomalies Investigating DGM Anomalies 10

11 Summary Map DGM Grid Size 11

12 UXO Items 75-mm Armor Piercing High Explosive 75-mm High Explosive 12

13 75-mm HE Projectiles with M51A5 Fuze 13

14 Unexploded Ordnance (UXO) Item Recovered 75-mm Projectile Sand Bags around Item After Detonation 14

15 Cold Spring Firing Point Fuze shipping containers, 155-mm rotating band covers and 155-mm lifting lugs excavated in Area E Discarded military munitions (DMM) MK-2A4 primers excavated in Area E (1 out of packaging, 3 still in original packaging). 15

16 Munitions Items Recovered 16

17 Munitions Density Maps Predictive model of number items per acre Model based on 100 square meter sample size Scenarios modeled 75 mm HE, 75 mm APHE and 155 mm HE (MEC Only) MEC and select munitions debris (items w/ energetics) MEC and all munitions debris 17

18 Density Map of MEC DRAFT Estimated Density per Acre (from VSP) 18

19 Density Map of MEC and Select Munitions Debris* DRAFT Estimated Density per Acre (from VSP) * Only Munitions Debris with energetic components that functioned properly 19

20 Density Map of MEC and All Munitions Debris DRAFT Estimated Density per Acre (from VSP) 20

21 Cultural and Archeological Resources Rattling Run Stony Valley Rausch Gap 9 Miles at the Site 21

22 Other Items Recovered Total Estimated Pounds: 313 lbs 22

23 Other Items Recovered 23

24 Biological - Plants American Holly 24

25 Biological - Snakes 25

26 Remedial Investigation Schedule Remedial Investigation Report Draft (15 Oct 2010) Draft Final (17 Jan 2011) Final (~ April 2011) Feasibility Study Draft (19 Nov 2010) Draft Final (~ Feb 2011) Final (~ June 2011) Proposed Plan (~ June 2011) Decision Document (~ August 2011) Remedial Action ( ) 26

27 Next Step - Feasibility Study Feasibility Study (FS) has been initiated. Currently assembling remedial cleanup technologies and alternatives to be evaluated. Draft Alternatives to be presented at next CIG meeting. 27

28 3R s Remember the 3Rs: Recognize Retreat Report 28