| Action Date |
Action |
Description |
DEC Staff |
| 6/1/1983 |
Update or Other Action |
Wells at Elmendorf AFB and some at Fort Richardson.
Well Bldg ft. depth yield
1 23-990 16' Shallow 1350 gpm in use South of North-South Runway
2 22-001 850' Artesian 840 gpm in use South of West Power Plant
4 65-600 78' Shallow 7 gpm in use Returnagain Six Mile Lake
8 52-140 252' Artesian 12 gpm in use EMS Office Loop Road
16 32-189 228' Artesian 95 gpm in use Standby Diesel Plant
25 63-320 155' Artesian 9 gpm in use Underground Six Mile Lake
27 62-250 210' Artesian 12 gpm in use Receiver Site
29 42-500 406' Artesian 40 gpm in use C.A.P.
39 35-750 141' Artesian 115 gpm in use Transmitter Ft. Richardson
40 5-800 209' Artesian 228 gpm in use AAC 5-800
41 52-820 56' Shallow 12 gpm in use Hillberg Lake Ski Bowl
42 11-200 225' Artesian 139 gpm in use DAC Building
43 24-800 159' Artesian 54 gpm in use USAF Hospital
46 63-621 60' Shallow 10 gpm in use Chalet MAC Six Mile Lake
47 63-740 23' Shallow 16 gpm in use CE Shady Lane Six Mile Lake
49 52-560 130' Shallow Artesian 16 gpm in use Green Lake Rec Area
50 BLM - - - in use Oil Well Road
51 63-501 - - in use 6981st Rec Area Six Mile Lake
52 23-100 166' Artesian 36 gpm in use Golf Course Pro Shop
53 62-145 125' Artesian 8 gpm in use EMS Ammo Storage Six Mile Lake
23 33-358 71' Shallow 36 gpm inactive Riding Stables
32 52-725 246' Artesian 12 gpm inactive Gun Site No. 1
34 53-125 186' Artesian 12 gpm inactive Gun Site No. 10
45 63-552 40' Shallow 50 gpm inactive Ranch Six Mile Lake
48 63-612 109.5' Artesian 30 gpm inactive Field Maint. Six Mile Lake
54 62-140 - - inactive EMS Six Mile Lake
2 old 33-000 78' Shallow 30 gpm inactive Old Round House
3 23-400 153' Artesian 104 gpm inactive Artesian Village, South
6 44-544 314' Artesian 40 gpm inactive Old 625 Radar
30 62-700 142' Artesian 18 gpm inactive Fish Camp D Battery
31 24-500 158' Artesian 60 gpm inactive BLM Old C Battery
- 64-560 - - - inactive -
35 44-705 405' Artesian 12 gpm inactive Site No. 3
36 24-025 189' Artesian 12 gpm inactive Site No. 5
4 old 23-396 45' Shallow 35 gpm abandoned Artesian Village, North
14 73-400 60' Shallow 12 gpm abandoned Old AFSC Receiver Site
20 52-812 70' Shallow 9 gpm abandoned Hillberg Lake (Resident)
- - 202' Artesian 12 gpm abandoned Site No. 6
- - 189' Artesian 12 gpm abandoned Site No. 2
44 63-615 87' Shallow 20 gpm abandoned Six Mile Lake, 21st Trans
NOTE: Three wells on Hospital Lin: 1. 1000 gpm 2. 1000 gpm 3. 800 gpm (Source Installation Documents 1983). |
Louis Howard |
| 5/17/1988 |
Update or Other Action |
On 17 May 1988, according to USAF records, a heating oil leak resulted from a failed cap elbow
in the piping system connecting the UST to Building 62-250 (now Bldg. 27369 Aircom Revr). Workers collected eight 55-gallon drums of contaminated soil from this location, primarily from above the UST, before cleanup activities were halted due to rain.
The remaining work was scheduled for the next day, although no report of final cleanup was found. A domestic water supply well (Base Well 27), located near the tank, showed low levels of hydrocarbons (70 parts per billion [ppb]) in a water sample collected 2 days after the leak was noticed. |
Louis Howard |
| 10/2/1992 |
Update or Other Action |
State Elmendorf Environmental Restoration Agreement signed. The agreement is designed to remedy environmental contamination due to past practices at the Base and avoid the expense of formal enforcement proceedings. The Air Force will perform the following tasks, if applicable: contamination site assessment work and field work plans, solid waste closure plans meeting the requirements of 18 AAC 60.410, solid waste closure corrective action options, POL (petroleum, oil, and lubricants)/LUST (leaking underground storage tank) contamination site assessment work plans and reports, groundwater monitoring, interim remedial or corrective actions, and final corrective actions.
The agreement addresses the following program areas: solid waste, underground storage tanks (USTs), and petroleum oil and lubricants (POL) spills.
LUST sites will be remediated pursuant to 18 AAC 78, POL sites will be remediated to levels set forth in 18 AAC 75 (non-LUST petroleum); the interim soil guidance for non-UST soil cleanup levels, dated July 17, 1991; the guidance for storage, remediation, and disposal of non-UST petroleum contaminated soils dated July 29, 1991; and for water the applicable water standards set out in 18 AAC 70; and the applicable federal regulatory requirements for maximum contaminant levels for drinking water; and interim guidance for surface water and groundwater cleanups dated September 26, 1990. ADEC and USAF agree to review new ADEC guidance within 60 days of its formal adoption. The parties agree to incorporate new guidance into future remediation actions. Solid waste sites will be remediated pursuant to levels identified in 18 AAC 60.315 and 18 AAC 60.035(4). |
Louis Howard |
| 3/26/1993 |
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...). |
Jennifer Roberts |
| 2/4/1994 |
Update or Other Action |
1994 SERA Phases 1A & 1B Site Assessment report includes site ST36. ST36, the site of a diesel leak, is located on a hilltop to the west of Spring Lake on the north end of Elmendorf AFB. ST36 is on the west side of a radar control Building (62-250), north of an emergency generator Building (62-255), and northwest of site ST66. An UST (Tank No. 250) of unknown capacity and age currently services Building 62-250 with heating oil via underground piping. Results: The groundwater sample collected from Base Well 27 did not have measurable concentrations of hydrocarbon compounds. The groundwater sample collected from well 56WL01 had 40 mg/L of DRO, 4.7 ug/L benzene, 16 ug/L toluene, 29 ug/L ethylbenzene and 100 ug/L xylenes (no PAHs were analyzed for in soil or water). Soil: 15' bgs 56BH01: 2,200 mg/kg DRO and 67.5' bgs 3,800 mg/kg.
A site investigation of site ST66, located within 75 feet of this site, is to be conducted upon
removal of two diesel USTs and a 500-gallon aboveground diesel tank. Two additional wells will
be installed at site ST66. The water table elevations from these wells may allow for three-point
analysis of the groundwater flow direction. The groundwater flow direction can then be used to
determine the direction of contaminant migration. Sampling of Base Well 27 and the monitoring wells should continue to determine if the drinking water has been affected by the release and if concentrations of contaminants dissolved in the groundwater are changing. Following the site ST66 investigation, remedial technologies should be reviewed to diminish the concentrations of hydrocarbons in the soils at site ST36. |
Louis Howard |
| 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 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 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 |
| 6/16/1995 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77754 |
Former Staff |
| 6/16/1995 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 6/16/1995 |
Site Added to Database |
|
Former Staff |
| 7/31/1995 |
Update or Other Action |
SERA Phase II Site Assessment Report FINAL Volume I of II Dated July 1995. Contract# F65501-93-D0003 Delivery Order No. 5017. Site ST66 Bldg. 62-255 Diesel Leak IRPIMS Site I.D. 50 had 7 boreholes and 3 wells completed. Two 5,000 gallon diesel USTs are located at ST66; both supply fuel to emergency generators in 62-255. A 500 gallon AST is also located in this area. The 3 tanks are scheduled to be removed in 1995. The STMP lists different reference numbers for the tanks at ST66: Tank 255 = STMP 249, Tank 256 = STMP 250, Unnumbered AST = STMP 257, and Unnumbered 2,000 gallon UST at site ST36 = STMP 510. The only notable concentrations of petroleum hydrocarbons were encountered in soil samples collected from 24.5 ft. bgs in 50WL03. This sample had DRO and GRO exceeding ADEC Level "A" cleanup standards. No contamination was detected in groundwater samples collected from the wells at ST66. Level "B" appears to be the cleanup level for the site. The extent of the contamination at ST66 has been determined & shown to be limited to a small zone at 50WL03.
The soil contamination identified in 50WL03 does not appear to be spatially related to the contamination identified at ST36. Contamination at ST36 could possibly have migrated laterally to the location of 50WL03 following the piping that runs between the 2 locations. The 5,000 gallon USTs &/or associated piping are implicated as the probably source. However, the limited extent of the contamination suggests that the source could be an intermittent or low volume leak. The disparity in water levels observed between the aquifer identified at ST36 (approximately 66' bgs) & ST66 (approximately 24' bgs & intermittent) indicates there is a perched aquifer at ST66. Recommendations: Based on the soil contamination identified at ST66, an active remediation system is recommended. A bioventing system is recommended, and bioventing feasibility treatability studies were conducted at sites ST66 & ST36 in the spring of 1995. |
Louis Howard |
| 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. |
Jennifer Roberts |
| 3/15/2007 |
Exposure Tracking Model Ranking |
|
Former Staff |
| 3/16/2007 |
Site Closure Approved |
See CS DB Reckey 199121X106002 Elmendorf ST66 Bldg. 27365 for further actions. |
Louis Howard |
