| Action Date |
Action |
Description |
DEC Staff |
| 3/23/1993 |
Update or Other Action |
DOD, EPA and ADEC joint Technical Memorandum of understanding signed concerning the Base-wide Groundwater (GW) signed by: EPA Marcia Combes, ADEC Jennifer Roberts RPM and USAF Joseph Williamson Chief Environmental Programs & Restoration. Due to the base-wide GW study and the FY92 field work that occurred at Operable Units (OUs) 1, 2, and 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 and Record of Decision (ROD). This means addressing all GW from upgradient sources (CERCLA (ST20, OUs 3 and 4) and OUs 1 and portions of OU2) and 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...). |
Louis Howard |
| 11/29/1993 |
Enforcement Agreement or Order |
Janice Adair Regional Administrator Southcentral Regional Office signs the November 29, 1993 Underground Storage Tank Agreement. The Parties enter this Agreement to perform necessary inventory, registration, upgrading or closure, and tightness testing associated with USTs at Elmendorf. All draft final work plans for field work must be submitted to ADEC a minimum of 30 days prior to the start of field work or construction. Site Assessment draft reports for closures must be submitted to ADEC within 60 days after completion of field work.
All reports of confirmed leaking USTs, or the need for further investigation, will be forwarded to 3 SPTG/CEVR (or its) successor organization) for possible inclusion into the SERA*. Initial
abatement activities required under 18 AAC 78.230 will be conducted by the Air Force prior to
transfer of any site to the SERA.
*SERA=Environmental Restoration Agreement between ADEC and the Air Force dated October 1992.
Discovered USTs-All USTs discovered during the life of this Agreement will be addressed under this Agreement and will be added to Attachment A. The Air Force will notify ADEC by next day mail of any discovery within five days of the discovery of an UST, unless release notification is required under 18 AAC 78 220, in which case those provisions will control.
Installation: Any new USTs installed by the Air Force shall be installed in accordance with 40 CFR 280 and 18 AAC 78.022 through 18 AAC 78.090 and will have leak detection, corrosion protectlon, overfill protectIon, and spill protection. The Air Force will notify ADEC at least 30 days prior to initiating installation of an UST. UST installation work will be conducted by a certified UST worker as required by 18 AAC 78.030 and 18 AAC 78.400.
Release Detection: The Air Force shall install and perform release detection in accordance with
the schedules outlined in Attachment A. If release detection is not installed or the tank not
previously permanently closed by the date in Attachment A, the Air Force will close the tank in
accordance with the closure requirements in 18 AAC 78. All tightness testing performed to
satisfy these requirements will be conducted bv a certified UST worker as required bv 18 AAC
78.030 and 78.400
Operation and Maintenance of Corrosion Protection: The Air Force shall meet the requirements of 18 AAC 78.045 and 40 CFR 280.31 for any steel USTs, that have corrosion protection systems The testing of the corrosion protection systems shall be done by a certified UST worker as required by 18 AAC 78.400.
Site Assessment or System Tig:htness Test: The Air Force shall either conduct a system tightness test on all regulated USTs located at the Base or permanently close the USTs in accordance with Attachment A. If site assessments or system tests have been conducted, the Air Force shall submit proof of compliance by the deadlines set in Attachment A. All tightness testing work will be conducted by a certified UST worker as required by 18 AAC 78.400.
Release Investigation and Corrective Action: Release investigations, interim corrective action and corrective action on petroleum contamination identified in work conducted pursuant to this Agreement is not within the scope of this Agreement. These activities will be conducted pursuant to the Environmental Restoration Agreement between ADEC and the Air Force dated October 1992. |
Janice Adair |
| 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 technology. 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). |
Louis Howard |
| 5/10/1995 |
Update or Other Action |
Shannon & Wilson Inc. on behalf of Knik Construction and the US Army CORPS of Engineers sent a request of disposal of waste soils from UST closures on Elmendorf AFB. Fire Pit Tank #435: One 22,000 gallon UST (#435) was removed at the fire training area on October 7, 1994. The UST reportedly stored waste jet fuel (JP-4 and JP-8). NOTE: Wide Cut Type (JP 4 and Jet B) fuels are mixtures of gasoline and kerosene distillate fractions with an approximate boiling range of 35°-315°C (95°-600°F). The chief difference between JP-4 and Jet B is that JP-4 contains the three mandatory additives while Jet B does not unless requested during procurement. These jet fuels are called wide-cut because the kerosene is cut with gasoline. They are also called wide-range, because of the wide range of boiling temperatures. These distillate-type turbine fuels originated in the USA where readily available gasoline fractions were used to supplement the basic kerosene type of fuel during 1951 to 1995.
JP-8 was first introduced at NATO bases in 1978, also called NATO F-34, and is currently the US Air Force's primary fuel and the primary fuel for US Navy shore-based aviation. JP-8 is very similar to Jet A-1. JP-8, however, contains an icing inhibitor, corrosion/lubricity enhancer and anti-static additive. Conversion to JP-8 was virtually complete in 1995 and was accomplished for fire safety and combat survivability reasons.
Analysis of the soil excavated was limited to DRO, GRO and BTEX. On October 7, 1994, approximately 110 cubic yards of soil were generated during the removal of the UST. Both the high level and medium level contaminated stockpiles contained about 30 cubic yards and were stored in a short term storage cell constructed with a perimeter berm of native soil, a non-woven geotextile fabric pad, and two layers of 10 mil reinforced polyethylene. Approximately 50 cubic yards of suspected clean soil were placed in two piles on a single layer of 10 mil reinforced plastic sheeting. |
Louis Howard |
| 6/7/1995 |
Update or Other Action |
John Halverson sent correspondence to Larry Opperman USAF re: Disposal of waste soil from UST Closures, Elmendorf AFB (request from Shannon & Wilson dated May 9, 1995). We are unable to locate information on tanks with UST# 25 at Bldg. 42-335 and UST# 30 at the fire pit. After further research we determined the proper tank numbers (UST registration numbers) are #335 for the UST at Bldg. 42-335 and #435 at the UST at the fire training pit. As we discussed, you are coordinating with the Corps of Engineers to ensure proper UST registration numbers are used in all future UST closure notices, site assessment reports, and post closure notices. In order for the AF to show compliance with the registration requirements, proper UST numbers must be used on all forms and reports. Also, please ensure the contractors working with regulated USTs at Elmendorf have a copy of the UST Compliance Agreement as stipulated in paragraph 75 of the Agreement. The department has not receibed site assessment reports for closure at these tanks. As we have discussed, the Agreement calls for submittal of draft site assessment reports within sixty (60) days of a UST being removed from the ground or closed in place. The department requests submittal of site asssessment reports for all USTs removed to date under the contract with Knik Construction. The department has reviewed the request for approval to treat the 209 cubic yards of soil from these USTs, information in our UST files, and the fire training pit (OU4 under CERCLA) and approves the request. |
Louis Howard |
| 7/6/1995 |
Update or Other Action |
ASR sends notification of treatment of 377.12 tons of soils and post remedial analysis showing it meets Level "A" cleanup levels. |
Louis Howard |
| 8/23/1995 |
Update or Other Action |
Draft UST Closure Assessment Delivery Order 0006 Fire Pit Tank 30 (AFID 435) dated February 1995 received. Site has contaminated soil remaining in ground. Contaminants exceeding action levels are DRO, GRO, and BTEX. Page 5 Para. 2: Placement of 5 cubic yards of suspected clean soil placed back in excavation. Page 5 Para. 3: Placement of two 12' sections of slotted PVC plastic pipe on both ends of excvation at depths of 8'-10' when contamination was noted at 12' or greater. Page 6 Para. 2: Headspace screening, metal lids were punctured and a FID probe inserted. Unknown if the sample lids were made of aluminum foil or not.
Page 7 4.0 Lab Analysis: Report stated that samples of sludge removed from tank were tested for a variety of anlytes, including lead. Assumption made was results of testing indicated that none of the parameters tested for were not contaminants likely to be released from UST.
Figure 2
Sample locations indicated on Fig. #2 show two "clean" soil stockpiles. However, only one sample result was reported, sample ID 94ELM 212sl, to confirm soils in the two stockpiles were clean. Given there were two "clean" soil stockpiles, each of less than 50 cy., a minimum of four lab samples should have been submitted to confirm the "clean" status of the soils contained in these stockpiles. Even if the two piles were combined creating one pile of 70 cy., three soil samples should have been taken and submitted to the laboratory. |
Louis Howard |
| 10/1/1995 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77676 |
Former Staff |
| 10/1/1995 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 10/1/1995 |
Site Added to Database |
|
Former Staff |
| 10/21/2002 |
Update or Other Action |
Jennifer Roberts (DEC Federal Facilities) sent a letter to Joe Williamson dissolving the State Elmendorf Environmental Restoration Agreement. The Alaska Department of Environmental Conservation (DEC) has reviewed the issue of abolishing the State Elmendorf Environmental Restoration Agreement (SERA) per your recommendation. Elmendorf Air Force Base and DEC entered into the SERA in 1992. The agreement was developed as a tool to bring the Base into compliance with Alaska's regulations addressing underground storage tanks, oil and other hazardous substance releases and solid waste.
Since that time, Elmendorf has made significant progress in investigating and cleaning up historic contamination problems. Many of the sites covered by the SERA have been successfully cleaned up and closed. Cleanup is underway at the remaining sites. Additionally, Alaska has amended the regulations addressing fuel storage tanks, oil and other hazardous substance spills and solid waste. We concur with you that the SERA is no longer a necessary or beneficial. This letter serves as notice that DEC will end oversight on environmental work at Elmendorf by using the SERA. Instead, it is understood that the sites and programs formerly addressed by SERA: solid waste, underground storage tanks (UST), and oil and other hazardous substance discharges will be addressed in accordance with 18 AAC 60, 18 AAC 78 and 18 AAC 75. |
Louis Howard |
| 3/5/2007 |
Exposure Tracking Model Ranking |
|
Former Staff |
| 3/6/2007 |
Site Closure Approved |
See CS DB Reckey 199321X136502 Elmendorf OU4 FT23 Fire Training Area (CERCLA Site) for further actions. Remedy in place and operating as designed. |
Louis Howard |
| 8/14/2014 |
Update or Other Action |
As a former Fire Training Area, PFCs will need to be analyzed for at this site.
At several other sites, ADEC is requesting that Air Force address Perfluorinated compounds (PFCs) as soon as possible. In 1970, the Air Force (nationwide) began using Aqueous Film Forming Foam (AFFF) fire fighting agents containing PFCs to extinguish petroleum fires. AFFF can contain and degrade into perfluorooctane sulfonate (PFOS), and may further degrade into perfluorooctoanoic acid (PFOA). During fire training, equipment maintenance, and use, AFFF was released directly to the environment.
In accordance with 18 AAC 75.340(g) , ADEC has calculated cleanup levels for PFOS and PFOA. Using the numerical factors presented in EPA’s Office of Water which established a provisional health advisory for PFOS and PFOA to protect against the potential risk from exposure of these chemical through drinking water provisional health advisory, a subchronic RfDs was extrapolated by ADEC and subsequently used in the current EPA Regional Screening Levels equations for Alaska site-specific risk based cleanup levels in soil and groundwater. Values maybe updated by ADEC as more current and relevant toxicity information are presented and reviewed.
EPA has recently published draft RfDs for chronic exposure, and we have calculated new cleanup levels using that data and the equations in the 2008 ADEC Cleanup Levels Guidance.
Under 40" Zone
PFOS direct contact 2.38 mg/kg, MTGW 2.09 mg/kg, Table C 0.0011 mg/L
PFOA direct contact 1.58 mg/kg MTGW 0.51 mg/kg Table C 0.00073 mg/L |
Louis Howard |
