| 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 |
AF memo: 18 April 1995 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. EAFB will make every effort to accomplish a clean closure of a UST removal site if possible.
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. The presumptive remedy for contaminated UST sites in the outwash plain only will be bioventing technology. Contaminated soils exceeding cleanup levels may be placed back into the excavation only if the site assessment (SA) indicates a need for further cleanup action.
Contaminated UST sites not in the outwash plain will require further investigation to determine appropriate cleanup options. We 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. The project will first accomplish removal of all of the USTs. SA information will be used to proritize 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 into SERA Phase IV. John Halverson signed on April 21, 1995. Memo was signed by Douglas G. Tarbett, Maj, USAF, Chief, Environmental Compliance. CC: 3 WG/JA and 3 SPTG/CE. |
John Halverson |
| 8/14/1995 |
Update or Other Action |
On February 21, 1995, staff sent the Air Force a letter with comments on site assessment reports prepared by EA Engineering for USTs it closed or upgraded during 1994. The reports were not complete and ADEC requested they be amended to provide the necessary information. Without the complete site asessment reports ADEC is unable to make determinations on site closure or the neeed for additional investigation or corrective action. Until information is submitted, the Air Force has not met its site assessment obligations and may be in violation of release investigation and corrective action requirements.
On March 28, 1995, ADEC sent the Air Force another letter providing comments on site assessment reports prepared by Haliburton NUS and Harding Lawson. Several of the sites may be appropriate for no further action decisions after additional information is provided. However, until it is submitted, ADEC cannot make such determinations.
The 1994 UST tightness testing results report, dated January 1995, identified the following problems: Tank#530 at building 11-530, failed the initial tightness test and after flanges and seals were replaced the system tested tight. ADEC has no record of a site assessment or release investigation at this site. |
Louis Howard |
| 9/5/1995 |
Site Added to Database |
|
Former Staff |
| 9/5/1995 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 76209 ADD; Site added to database. |
Louis Howard |
| 9/30/1995 |
Update or Other Action |
AFID 530: The old UST from Wing Headquarters has been removed. The generator is currently being supplied by a temporary tank. The new 500 gallon UST was installed on Saturday Sept. 30, 1995. The interstitial monitoring probe has to be backordered. All other piping will be installed by October 10, 1995. |
Louis Howard |
| 10/15/1996 |
Underground Storage Tank Site Characterization or Assessment |
Site assessment report showed that soil samples obtained from UST excavation and soil stockpiles did not exceed level "B" criteria. However, a data gap was identified that no GRO/BTEX or PAH analytical data was collected at the site. JP-5, JP-8, Jet A and JP-4 require analyses for GRO, DRO, BTEX, and PAHs. Piping from building to UST was not field screened nor sampled. |
Louis Howard |
| 3/25/1998 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 10/13/1998 |
Update or Other Action |
Staff reviewed the September 8, 1995, closure of UST, AFID # 530, located at building 11-530 (Wing HQ Building) on Elmendorf AFB. Review of the site assessment reports received November 10, 1995 and January 20, 1998, prepared by ASRC Construction Company, Inc. Facility ID 0-001525, tank #173.
The Department of Environmental Conservation (ADEC) has received and reviewed both the draft and final site assessment reports documenting the closure of the above mentioned regulated underground storage tank (UST). The reports summarize the information collected during closure of the 750-gallon JP-8 UST used to supply fuel for an emergency generator.
The Department is requesting the Air Force to submit additional information regarding field and confirmation sampling of the piping excavation. The information presented in the draft and final reports indicate the distribution piping was removed, but no data was presented showing field screening or confirmation sampling was performed in accordance with 18 AAC78.090(d)(2)(B)(v).
Please either submit a work plan describing how and where the Air Force plans to investigate the piping trench for possible contamination, or provide information showing the distribution line was adequately assessed for the presence of contamination. |
Tim Stevens |
| 7/12/2001 |
Update or Other Action |
Two borings placed at the site to determine the presence of contamination above cleanup levels. Soil sample results were below cleanup levels. However, the boring placement was not in the area of the piping location so no sampling or field screening of soil in the former piping location was conducted. |
Louis Howard |
| 12/5/2003 |
Site Closure Approved |
Contamination was found to be below level "A" criteria and site shall be considered closed out. |
Louis Howard |
| 12/5/2003 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 76209 name: autogenerated pm edit - Elmendorf - AFID 530 ST906 |
Louis Howard |
| 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 was excavated and removed and the UST site assessment was conducted in 1995. Five confirmation samples were collected from the bottom of the excavation and three from the soil stockpile. All results were below Alaska Department of Environmental Conservation (ADEC) 18 AAC 75, Method One, Category A cleanup criteria. 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 ST906 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 |
