| Action Date |
Action |
Description |
DEC Staff |
| 3/26/1993 |
Update or Other Action |
DOD & ADEC joint Technical Memorandum of understanding signed concerning the Basewide Groundwater (gw) signed by: ADEC Jennifer Roberts RPM & USAF Joseph Williamson Chief Environmental Programs & Restoration. Due to the basewide gw study & the FY92 field work that occurred at Operable Units (OUs) 1, 2, & 5 it appears a large portion of the gw flows into OU5 (attach. 1-contour map). Based on this fact, Elmendorf (EAFB) will move all upgradient gw into the OU5 Feasibility Study, Proposed Plan & Record of Decision (ROD). This means addressing all gw from upgradient sources (CERCLA (ST20, Ous 3&4) & OUs 1 & portions of OU2) & SERA) at OU5 instead of at each individual source area (see attach. 2-Area Map). Sites with free phased product would be looked at to see if there is an available technology to clean them up in a cost effective way. Soil contamination would be addressed at the source areas. NOTE: addressed at the source areas is interpreted by ADEC as removal through excavation or active treatment systems (e.g. high vacuum extraction, bioventing, etc...).
Also included in the file is the AF memo: Restricted Use of the Shallow Aquifer on EAFB signed by William R. Hanson P.E. GM-14 Chief Environmental Flight dated October 17, 1996 Memorandum for 3 SPTG/CEC/CEO from 3 SPTG/CEV
1) Due to the contamination & commitments to EPA/DEC the use of the shallow aquifer for any purpose on is not allowed. Attached Facilities Board minutes-03/29/1994 0930 Item 9 has Mr. William Hanson, briefing the Board on the policy to not use the shallow aquifer due to contamination. The Board approved this policy. Minutes approved by Thomas R. Case Brigadier General USAF Commander. The IRP has RODs for OUs 3 & 6 which require, the aquifer remain unused. 2) Personnel in the review process within CES must be aware of these policies & review them on a recurring basis. It is imperative this restriction be recognized & observed during engineer reviews & operations. |
Jennifer Roberts |
| 4/21/1995 |
Update or Other Action |
Air Force Memorandum to John Halverson re: UST meeting. Elmendorf AFB will accomplish the following actions regarding UST projects. These actions are based upon conversation between, John Mahaffey, Larry Opperman and yourself.
1) EAFB will make every effort to accomplish clean closure of a UST removal if possible. 2) UST removal locations requiring cleanup action will be transferred into the State Elmendorf Environmental Restoration Agreement (SERA). A list of sites requiring cleanup will be coordinated with your office. 3) The presumptive remedy for contaminated UST sites in the outwash plain only will be bioventing technolgy. 4) Contaminated soils exceeding cleanup levels may be placed back into the excavation only if the site assessment (SA) indicates a need for further action. 5) Contaminated UST sites not in the outwash plain will require further investigation to determine appropriate cleanup options. 6) We (Elmendorf) will make every attempt possible to assure new USTs or new aboveground tanks are not installed in any way that would hamper future access for cleanup. 7) The project will first accomplish removal of all the USTs. SA information will be used to prioritize sites for cleanup using existing project funds. Additional funding will be requested to complete cleanup if available. Sites not addressed for cleanup due to exhausted funding will be placed in SERA Phase IV.
John Halverson signed memorandum on April 21, 1995. Memorandum submitted by Douglas G. Tarbett, Maj. USAF, Chief Environmental Compliance (CCs 3 WG/JA and 3 SPTG/CE). |
John Halverson |
| 6/21/1996 |
Site Added to Database |
|
Former Staff |
| 6/21/1996 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 76530 (Added by System) |
Louis Howard |
| 10/15/1996 |
Underground Storage Tank Site Characterization or Assessment |
UST Decommissioning and Site assessment - AFID 245 Bldg. 22-045 DRAFT Repair 17 Underground Storage Tanks Contract # F41624-94-D-8070 Delivery Order # 0006. The report documents a 500 gallon waste oil removal AFID 245. Piping to UST could not be found during removal. No contamination was found in two samples from excavation (6' wide by 10' long by 6' deep) above Level "C" criteria. However, stockpile was not sampled and was put back into excavation. Recommedations-Based on the results of field screening and laboratory analyses of soil samples collected in the vicinity of the excavated UST it is recommended that this site be closed with no further action. |
Louis Howard |
| 10/16/1996 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 6/30/1997 |
Update or Other Action |
Site Evaluation and Bioventing Studies for SERA Phase V Sites 1997 Work Plan (FINAL). Document includes: ST509, 510 (AFID 105), 511 (AFID 310), 512 (AFID 326), 513 (AFID 390), 514 (AFID 475), 515 (AFID 580), 516 (AFID 154), 517 (AFID 179), 518 (AFID 245), 519 (AFID 890), 520 (AFIDs 39, 40, & 41), 521 (STMP 426), 522 (STMP 431), 523 (AFID 16), 524 (149), 525 (AFID 330), 526 (AFIDs 700A & 700B), AST 527 (AFID 814), ST528 (AFID 857), 529 (AFIDs 878a & 878b), 530 (AFID 893), 531 (STMP 240) (STMP 240), 532 (STMP 243), 533 (STMP 245 & 246), 534 (STMP 300), 535 (STMP 428), 536 (above ground tanks at Madbull Area I), 537 (above ground tank at Madbull Area II).
The excavated soil was not sampled, and was used to backfill the excavation. However, there was no odor of contamination in the stockpile, and the highest contamination detected by the PID was 1.8 ppm. No contamiantion above Level "C" was found at the bottom of the excavation. Recommendation-This site will be recommended for closure with no further action. |
Louis Howard |
| 12/5/2003 |
Site Closure Approved |
Followup investigation confirmed that no soil contamination is present at the site above Method Two migration to groundwater cleanup criteria-site closed out. |
Louis Howard |
| 6/30/2004 |
Update or Other Action |
RECKEY has automatically been generated. |
Former Staff |
| 12/5/2007 |
Update or Other Action |
Staff commented on the Site Closure Confirmation Request, Environmental Compliance Program, Elmendorf AFB, Alaska dated November 6, 2007 for twenty-three (23) sites submitted by the Air Force’s Environmental Compliance Program. This request was to confirm the sites have met all applicable State of Alaska cleanup regulations.
The UST removal and site assessment were completed in 1996. The UST was in good condition, with some rust, but no obvious holes. Two analytical soil samples were collected from the bottom of the tank excavation, at approximately 5.5 feet bgs. The maximum DRO concentration was 35 milligrams per kilogram (mg/kg) and the maximum RRO concentration was 430 mg/kg. Arsenic, chromium, and lead were detected below 18 AAC 75 Method Two criteria or within background ranges for Elmendorf AFB soil. PCBs were detected at a maximum of 0.047 mg/kg. ADEC concurred that no further remedial action was necessary in a 2003 letter to the Air Force.
ADEC still concurs no further remedial action is required at ST518 and a “Site Closure Approved” action will be entered. ADEC is basing its decision on the most current and complete data provided by the Air Force. ADEC reserves its rights, under: 18 AAC 75 Oil and Other Hazardous Substances Pollution Control regulations (as amended through December 26, 2006), 18 AAC 78 Underground Storage Tank regulations (as amended through October 27, 2006) and Alaska Statute 46.03 to require additional investigation, cleanup, or containment, if subsequent information indicates that: additional contamination remains at the site which was previously undiscovered and presents an unacceptable risk to human health, safety, or welfare, or the environment.
Please note, per 18 AAC 75.325(i), department approval is required prior to disposing of soil or water from a site that is, or has been, subject to the site cleanup rules. |
Louis Howard |
| 7/7/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 76530 name: autogenerated pm edit - Elmendorf - AFID 245 ST518 |
Louis Howard |
