| Action Date |
Action |
Description |
DEC Staff |
| 8/6/1991 |
Enforcement Agreement or Order |
Federal Facility Compliance Agreement RCRA Docket No. 1090-01-27-6001 issued. It was initiated by a Notice of Noncompliance dated December 28, 1990, RCRA 42 USC 6901 et seq.
Building 32-050 Corrosion Control: The 1990 inspection revealed two (2) large sand blasting filters wrapped in plastic stored in the hazardous waste accumulation area. The filters were hazardous waste, EPA hazardous waste code D008, but were not labeled, "Hazardous Waste". The 1989 inspection revealed five (5) drums of blaster dust determined to be high in lead, EPA hazardous waste code D008, which were not labeled "Hazardous Waste" and were not marked with the date accumulation began. These omissions are violations of Permit Condition C.1., which requires'compliance with 40 C.F.R. § 262.34 at hazardous waste accumulation areas, and 40 C.F.R. S§ 262.34(a)(2) and (3) which require that all hazardous waste accumulation containers be clearly marked with the words "Hazardous Waste" and with the date accumulation began.
The 1990 inspection revealed one (1) open drum of methyl ethyl ketone labeled "Hazardous Waste", EPA hazardous waste code F005. Waste was not.being added to, or removed from the drum. This open drum is a violation of Permit Condition C.1., which requires compliance with 40 C.F.R. § 262.34 at hazardous waste accumulation areas, and 40 C.F.R. § 262.34(a)(1) which requires compliance with 40 C.F.R. Part 265, Subpart I. 40 C.F.R. Part 265.173 is within Subpart I, and requires that hazardous waste containers must be closed except when it is
necessary to add or remove waste. |
Rich Sundet |
| 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 any necessary assessment, monitoring, remediation, and closure of the sites. The agreement addresses the following program areas: solid waste, underground storage tanks (USTs), and petroleum oil and lubricants (POL) spills. |
Louis Howard |
| 2/3/1993 |
Notice of Violation |
Svendt Brandt-Erichsen sent NOV to Colonel Rodney P. Kelley Wing Commander for EAFB based on findings from the past 2 RCRA compliance evaluation inspections conducted on 8/27-29/91 and 9/28-30/92 by EPA and ADEC. During 1991 inspection EAFB failed to make adequate hazardous waste determinations for containers of solid waste at the Corrosion Control Shop Building 32-050 (now known as Building 6263 on Gibson Avenue not Elm street), on two 55 gallon drums of the collected waste fines (residue) from the sandblasting booth.
Responses to NOV by Air Force to be sent to Rich Sundet, Dan Garcia or Geof Kany. Within 30 days of receipt of this Notice (February 3, 1993 letter) Elmendorf submit a report stating what measures have been or are proposed to be taken, to correct and control the violations outlined in this Notice. In addition, your response must describe the measures taken to prevent these violations from recurring. |
Rich Sundet |
| 3/26/1993 |
Update or Other Action |
DOD and ADEC joint Technical Memorandum of understanding signed concerning the Base wide Groundwater (GW) signed by: 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...).
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 and 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 and 6 which require, the aquifer remain unused. 2) Personnel in the review process within CES must be aware of these policies and review them on a recurring basis. It is imperative this restriction be recognized and observed during engineer reviews and operations. |
Jennifer Roberts |
| 1/5/1995 |
Update or Other Action |
ADEC letter to Dept. Of Air Force (J. Williamson and C. Mayer) from J. Halverson RE: SERA Phase III Site Assessment Work Plans, Preliminary Draft Dec. 1994. Section 1.2 Last Paragraph: The text refers to studies ENSR reviewed prior to preparation of the draft site assessment work plan. It contains a reference to a 1994 site investigation by the US Army Corps of Engineers at the Corrosion Control Facility, SS80. ADEC is unable to locate a copy of the investigation report and thus are not able to fully evaluate the appropriateness of work proposed for the site. A copy of the Corps of Engineers report has been requested from Mr. Mayer. |
Louis Howard |
| 3/15/1995 |
Update or Other Action |
ADEC (J. Halverson) sent the Dept. Of Air Force (J. Williamson & C. Mayer 3 SUG/CEVR) a letter RE: SERA Phase III Site Assessment Work Plans, Draft February 1995. As previously noted, the department does not have a copy of the Corps of Engineers report documenting the previous investigation results at this site. Review of the existing information should be completed prior to approving an additional work plan. |
John Halverson |
| 4/18/1995 |
Update or Other Action |
Air Force Memorandum to John Halverson (ADEC) re: 18 April 1995 UST meeting.
1. Elmendorf AFB will accomplish the following actions regarding UST projects. These actions are based upon conversation between, John Mahaffey, Larry Opperman and yourself.
a. EAFB will make every effort to accomplish clean closure of a UST removal if possible.
b. 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.
c. The presumptive remedy for contaminated UST sites in the outwash plain only will be bioventing technology.
d. Contaminated soils exceeding cleanup levels may be placed back into the excavation only if the site assessment (SA) indicates a need for further action.
e. Contaminated UST sites not in the outwash plain will require further investigation to determine appropriate cleanup options.
f. 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.
g. 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 |
| 8/11/1995 |
Update or Other Action |
ADEC (John Halverson) sent letter to Air Force (L. Opperman) RE: Disposition of petroleum contaminated soil generated during underground storage tank (UST) Closures at Elmendorf AFB. I met with you and Mr. John Mahaffey on April 18, 1995, to discuss UST closures planned at Elmendorf this summer and the issue of how contaminated soil would be handled. We agreed that if "clean closure" could be reached through excavation, all contaminated soil should be removed and taken to an off-site treatment facility. We also agreed that petroleum contaminated soil could be placed back in the ground, on the condition bioventing systems would be installed starting this year, if clean closure was not feasible. However, it has become apparent the Air Force has not been able to implement corrective action at leaking underground storage tank sites in a timely manner.
Therefore, our April 21, 1995 agreement on soil management must be revoked. Starting immediately, the department requests that all contaminated soil removed from the ground during closure or upgrade of USTs be completely contained in accordance with our petroleum contaminated soil stockpiling guidelines referenced in the UST regulations. Please notify your project managers, the Army Corps of Engineers project manager and all of your UST contractors of this change. The rationale behind the need to contain all excavated petroleum contaminated soil is provided below.
Failure to implement Corrective Action-Tank #805, at building 24-805, failed a tightness test in 1994 and was removed from the ground. Tanks #96-104 were also removed from the ground in 1994. Petroleum contaminated soil was excavated during removal of the tanks. The Air Force requested approval to place contaminated soil back in the ground at both sites. Department approval was granted on the condition corrective action be started at each site no later than June 30, 1995. The Air Force had committed to doing this work under Phase IV of the SERA. However, we have been informed that contracts for SERA Phase IV have not yet been awarded, work plans have not been developed, and it does not appear the field work will be started this year. This is a violation of the corrective action requirements outlined in the UST regulations and our prior agreements.
Management Action Plan (MAP) for transfer of LUST sites into the SERA-On several occasions the department has requested a formalized process for transfer of leaking UST sites from the UST agreement into the SERA. The January 3 1, 1995 annual UST report states that a MAP was being prepared to formalize such a process and that a copy would be forwarded to us as soon as it was completed. We have not received a copy of the MAP. Numerous LUST sites have been identified during the past two years and transfer of sites between the UST and SERA compliance agreements has not been working. It appears the UST agreement needs to be amended to address release investigation and corrective action requirements. Based on the above and the fact that funding for DoD environmental cleanups is being reduced, we are no longer in a position to allow contaminated soil to be placed back in the ground with the hope it will be remediated in a timely manner.
|
John Halverson |
| 10/25/1996 |
Update or Other Action |
Final Results of SERA Phase III Investigation
Source Area SS80-Source Area SS80 currently an open field located south of the flight line, west of Taxiway 12, and south of Acacia Drive. Figure 1 shows the location of the site on ElmendorfAFB and Figure 5 shows the site layout. Aerial photographs and historical records indicate that a building was located on the northeast corer and a warehouse was located on the northwest corner of the site until 1972.
During a geotechnical foundation investigation, petroleum hydrocarbons were found at concentrations up to 1,800 mg/kg DRO and semivolatile organic compounds (SVOCs) at concentrations up to 311 mg/kg in the surface soils. Groundwater is approximately 15 feet bgs. SS80 is scored level B on the Alaska Clean-Up Matrix Score sheet in Figure 6.
Results of Follow-On Investigation at SS80-Table 5 gives the results of the analytical testing of the soil borings. Table 6 gives the results of the analytical testing of the samples taken by hand augering. SS80 is not contaminated by gasoline or Diesel fuel. It is, however, contaminated by hydrocarbons which eluted within the lubricating oil retention time window, and the pattern they produced resembled that for lubricating oil.
During this follow-on investigation, a total of 16 samples were analyzed. All of the samples, with the exception of Hand Auger (HA) 02, gave comparable readings. HA02 contained 5,540 mg/kg of unknown organics in the diesel range. This reading is over 5.5 times as high as the next highest reading during this round of sampling, and over three times as high as the highest reading in the original round of sampling.
In order to remove possible anomalies, the highest and lowest readings were not used in the statistics in both the initial round of sampling and this follow-on investigation. [Throwing out "outliers" and averaging concentrations are not allowed under current regulations-see note below] (See Tables 7 and 8.).
This procedure reduces the standard deviation of the initial round of sampling by 14%, and reduces the standard deviation of the follow-on round of sampling by 78%. Using this method, the average contamination has been biodegraded from 430 mg/kg to 226 mg/kg in the approximately three years between sampling events. This is equivalent to a biodegradation rate of 0.19 mg/kg/day.
During the initial investigation, all of the contamination found was less than five feet below ground surface. The only sample from a boring during the follow-on investigation that was above ACM level B was taken at a depth of 2.5 to 5 ft. in SB02. All of the hand auger samples during the follow-on investigation were taken at depth of less than 3 ft. At this shallow depth the soil should continue have sufficient air exchange with the atmosphere for aerobic degradation of the POL to continue.
Recommendation for future actions at SS80-Not using the highest and lowest readings, the average soil contamination at SS80 is 226 mg/kg. Since all the readings in excess of ACM level B have been within five feet of the ground surface, the aerobic biodegradation of the hydrocarbon should continue.
If the current rate of biodegradation continues, the average contamination at SS80 will be less than 200 mg/kg (ACM level B) in approximately six months. It is recommended that no action be taken at SS80 at this time, and that the surface soil at SS80 be resampled in two years to confirm that the expected biodegradation is continuing. During the next sampling event, a sample should be taken from the vicinity of HA02 to determine whether this area is still highly contaminated.
Note to file: 18 AAC 75.380 Final Reporting Requirements and site closure - The department will determine final compliance with the
(1) applicable soil cleanup levels, based on sampling results from onsite contaminated soil and from contaminated soil moved offsite for treatment or disposal, and based on the MAXIMUM concentrations detected, unless the department approves an appropriate statistical method, in which case compliance will be based on the mean soil concentration at the 95th percent upper confidence limit; approval of a statistical method will be based on
(A) the number and location of samples taken;
(B) whether large variations in hazardous substance concentrations relative to the mean concentration exist; and
(C) whether a large percentage of concentrations are below the method
detection limit. |
John Halverson |
| 10/25/1996 |
Update or Other Action |
Final Results of SERA Phase III Investigation
Source Area SS80-Source Area SS80 currently an open field located south of the flight line, west of Taxiway 12, and south of Acacia Drive. Figure 1 shows the location of the site on ElmendorfAFB and Figure 5 shows the site layout. Aerial photographs and historical records indicate that a building was located on the northeast corer and a warehouse was located on the northwest corner of the site until 1972. During a geotechnical foundation investigation, petroleum hydrocarbons were found at concentrations up to 1800 mg/kg DRO and semivolatile organic compounds (SVOCs) at concentrations up to 311 mg/kg in the surface soils. Groundwater is approximately 15 feet bgs. SS80 is scored level B on the Alaska Clean-Up Matrix Score sheet in Figure 6.
Results of Follow-On Investigation at SS80-Table 5 gives the results of the analytical testing of the soil borings. Table 6 gives the results of the analytical testing of the samples taken by hand augering. SS80 is not contaminated by gasoline or Diesel fuel. It is, however, contaminated by hydrocarbons which eluted within the lubricating oil retention time window, and the pattern they produced resembled that for lubricating oil.
During this follow-on investigation, a total of 16 samples were analyzed. All of the samples, with the exception of Hand Auger (HA) 02, gave comparable readings. HA02 contained 5,540 mg/kg of unknown organics in the diesel range. This reading is over 5.5 times as high as the next highest reading during this round of sampling, and over three times as high as the highest reading in the original round of sampling. In order to remove possible anomalies, the highest and lowest readings were not used in the statistics in both the initial round of sampling and this follow-on investigation. (See Tables 7 and 8.)
This procedure reduces the standard deviation of the initial round of sampling by 14%, and reduces the standard deviation of the follow-on round of sampling by 78%. Using this method, the average contamination has been biodegraded from 430 mg/kg to 226 mg/kg in the approximately three years between sampling events. This is equivalent to a biodegradation rate of 0.19 mg/kg/day.
During the initial investigation, all of the contamination found was less than five feet below ground surface. The only sample from a boring during the follow-on investigation that was above ACM level B was taken at a depth of 2.5 to 5 ft. in SB02. All of the hand auger samples during the follow-on investigation were taken at depth of less than 3 ft. At this shallow depth the soil should continue have sufficient air exchange with the atmosphere for aerobic degradation of the POL to continue.
Recommendation for future actions at SS80-Not using the highest and lowest readings, the average soil contamination at SS80 is 226 mg/kg. Since all the readings in excess of ACM level B have been within five feet of the ground surface, the aerobic biodegradation of the hydrocarbon should continue. If the current rate of biodegradation continues, the average contamination at SS80 will be less than 200 mg/kg (ACM level B) in approximately six months.
It is recommended that no action be taken at SS80 at this time, and that the surface soil at SS80 be resampled in two years to confirm that the expected biodegradation is continuing.
During the next sampling event, a sample should be taken from the vicinity of HA02 to determine whether this area is still highly contaminated. |
Louis Howard |
| 11/4/1996 |
Document, Report, or Work plan Review - other |
ADEC letter sent to Air Force (C. Mayer) re: SERA Phase III Projects-Sept. 4, 1996 Memo from Radian Corporation. Based on Radian's memo it appears the sites (with the exception of SS80) will not require further investigation or remediation.
The memo recommends revising the existing site assessment reports to state that the site specific soil cleanup matrix values have not been exceeded. Submitting an addendum to the reports would be one acceptable method of revising the reports.
Regarding SS80, Radian proposed using the average concentration of DRO measured in site samples to evaluate the need for further action. Typically, the department has not used average concentrations of contaminants to determine whether further investigation or cleanup is necessary. The concern typically being that a hot spot in soil may be a conduit where contaminants have or may leach to the groundwater. However, in this case soil impacts are below the ground surface (no dermal exposure pathway other than during subsurface soil work) and groundwater has not been impacted. Therefore, it appears reasonable to consider the average rather than the highest concentration. |
John Halverson |
| 1/21/1997 |
Update or Other Action |
ADEC letter to Air Force (C. Mayer) re: Final Results SERA Phase III Investigation, Technical Memorandum dated October 25, 1996. SS80: At this site, soil sampling shows that the area between soil borings AP3708, HA02, HA03, AP3791, AP3700 and AP3703 contains elevated concentrations of diesel range organics (DRO) in the surface and shallow subsurface soil. In 1993, surface soil samples collected from AP3703 contained polynuclear aromatic hydrocarbons (PAHs) at concentrations two to three orders or magnitude above risk based screening concentrations. Also in 1993, soil samples collected from five feet below the ground surface at AP3700 contained elevated concentrations (two to three orders of magnitude above risk based screening values) of PAHs. In 1996, a surface soil sample collected at HA02, the closest location to AP3703, contained more than 5,000 mg/kg diesel range organics. The soil samples collected in 1996 were not analyzed for PAHs.
During the planning stages for this site assessment, the Air Force had other plans that called for constructing a building over part of the site. The construction would have removed some contaminated surface and shallow subsurface soil, which would have been sent to an approved treatment facility. The building and associated parking area would have created a cap over any residual contaminated soil beneath them. However, the construction project has been cancelled.
The technical memo contains a comparison of analytical results from 1993 and 1996, which indicates diesel range organics (DRO) have decreased. The highest 1996 sample result is from HA02, the location closest to the highest 1993 results, but it is identified as an outlier in the 1996 data. Thus, it is not so clear that contaminant concentrations have decreased. While it appears soil contamination at the site have not caused a groundwater contamination problem, additional work is warranted.
The department requests a corrective action plan to be prepared that at a minimum includes the following:
1) installing additional soil borings within the area bounded by the borings referenced above and collecting soil samples for analysis to quantify DRO and PAHs (soil samples should be collected from the surface, five feet below the ground surface and from greater depths especially at the location of the former borings AP3703 and 3700);
2) installing and sampling from a monitoring well to be located directly downgradient from AP3700; and
3) documenting in Elmendorf's real estate records the area where residual soil contamination exists and noting that during any future construction or development, any contaminated soil encountered must be properly managed (in accordance with 18 AAC 75). Alternatively, a corrective action plan could be submitted calling for a limited removal action followed by confirmation sampling. Following such a removal and after it is shown that any remaining contaminants are at or below acceptable concentrations, a no further action decision document could be prepared and signed. |
John Halverson |
| 2/11/1997 |
Site Added to Database |
Site added by Shannon and Wilson, Inc. |
S&W-Miner |
| 2/11/1997 |
Update or Other Action |
UPD action added by Shannon and Wilson, Inc. on 02/11/1997. Air Force Relative Risk Evaluation Worksheet dated 8/18/95 indicated FS (Feasibility Study?) is the current phase. |
S&W-Miner |
| 10/31/1997 |
Update or Other Action |
Supplemental Workplan for SERA Phase III field investigation and treatability study to the 1996 Basewide Support for bioventing studies. SS80 was originally investigated by the Corps of Engineers when the site was being considered as the location for a new building. 1,800 mg/kg DRO in the surface soil (boring AP-3708). The investigation also found up to 41 mg/kg of polynuclear aromatic hydrocarbons (PAH) (phenanthrene at boring AP-3700), in the soils. 1996 SERA III investigation found DRO in shallow surface soils at concentrations lower than the 1993 investigation. At a meeting in February 1997, representatives of ADEC recommended additional testing for elevated levels of PAHs and furans at SS80. This workplan addresses sampling for PAHs, DRO and furans. |
John Halverson |
| 7/11/2000 |
Cleanup Plan Approved |
Staff commented on the environmental cleanup plan for SS80 soil removal and approved plan as submitted. |
Louis Howard |
| 11/13/2000 |
Document, Report, or Work plan Review - other |
Staff reviewed and commented on report for the removal of contaminated soils at the site. 15 cubic yards of soil were removed. Confirmation soil sampling revealed remaining contamination is below most stringent applicable cleanup criteria.
Recommend site closure be pursued. If any information is presented in the future that indicates contamination from this source area is above established cleanup levels and/or poses an unacceptable risk to human health, safety or welfare or to the environment, then ADEC reserves its rights to require additional assessment and/or corrective action. |
Louis Howard |
| 1/17/2001 |
Update or Other Action |
Technical Document to support no further remedial action declaration.
The US Army Corps of Engineers originally investigated SS80 in 1993 when the site was being considered as the location for a new building. That investigation found up to 1,800 mg/kg of diesel range organics (DRO) in the surface soil (boring AP-3708). The investigation also found up to 41 mg/kg of polynuclear aromatic hydrocarbons (PAH) (Phenanthrene at boring AP-3700), in the soils.
This site was further investigated as part of the State-Elmendorf Restoration Agreement (SERA) Phase III investigation which was conducted in accordance with the Alaska Department of Environmental Conservation (ADEC) guidance on Underground Storage Tanks (18 AAC 78 as amended through November 3, 1995). This investigation found that DRO was still in the shallow surface soil. At a meeting in February 1997, representatives of ADEC recommended additional testing for elevated levels of PAHs and furans at SS80. Six borings were advanced at SS80 in the summer of 1997. Listed below are the contaminants at SS80 that exceeded Method Two cleanup levels from the ADEC 18 AAC 75 Oil and Hazardous Substances Pollution Control Regulations (as amended through January 22, 1999).
Analytical results of soil samples from 1993, 1996, and 1997 were compared to cleanup standards
presented in U.S. Environmental Protection Agency (USEPA) Region III risk based concentrations for soil ingestion and dermal contact at an industrial area. Based on this comparison, the following conclusions were reached regarding soil at SS80:
1. Analytical results for volatile organic compounds (VOCs) and gasoline range organics (GRO) showed that the concentrations of VOCs and GRO in soil were less than the cleanup standards; therefore, these contaminants are not of concern at SS80.
2. Deep soil samples (>5 feet below ground surface) did not contain contamination over the cleanup standards.
3. Analytical results for DRO showed that the concentrations in the shallow soil were above Method Two Interim Cleanup Levels for petroleum hydrocarbon soil with potential for migration to groundwater. The highest result for DRO in the shallow soil was 4,560 mg/kg. This DRO could emit vapors or be ingested, which could be harmful to human health. ADEC does not allow for any responsible party to determine cleanup levels based on aromatic or aliphatic breakdowns at this time since there is not an accepted standard method for these analyses. For the surface soil, the dermal risk is considered to be less than the ingestion risk.
4. The above listed semivolatile organic chemicals were detected in the 0 to 5 feet below ground surface interval in excess of cleanup standards.
This decision is based on the following references:
a. Site SS80 from SERA Phase III Site Assessment Work Plans, Final, Apr 95
b. Technical Memorandum, Final Results of SERA Phase III Investigation, 25 Oct 96
c. Alaska Department of Environmental Conservation's (ADEC) 21 Jan 97 Ltr
d. Technical Memorandum, Final Results of SERA Phase III Investigation at Source Area SS80, 2
Feb 98
e. Decision Document for SS80, signed 25 Feb 99
f. Summary Report Contaminated Soil Removal, Source Area SS80, Final, Dec 00
DESCRIPTION OF THE SELECTED REMEDY
Cleanup activities were agreed upon and specified in the SS80 Decision Document signed by the Air Force and the Alaska Department of Environmental Conservation in February 1999. The fieldwork included excavating and removing soil from a five-foot wide by five-foot long by five-foot deep area centered around each of three soil borings locations. The excavated soil was transported to a soil thermal remediation contractor for treatment and disposal. The excavations were backfilled with clean soil and the surface was restored.
DECLARATION
Soil sample analytical results from the treated soil indicated that the soil was successfully remediated. Analytical results from soil samples collected from the margins of the excavated areas indicate that the remaining soil has non-detectable or very low concentrations of GRO and PAH which are below the Method 2 cleanup levels. These sample results indicate that the remaining soil does not pose a threat to human health and the environment through ingestion, inhalation, or migration to groundwater and that the conditions set forth in the SS80 Decision Document have been met. |
Louis Howard |
| 1/31/2001 |
Site Closure Approved |
ADEC signed a "Technical Document to Support No Further Remedial Action Declaration" for ERP SS80 which is currently an open field located south of Fighter Drive and east of Gibson Avenue on Elmendorf Air Force Base. Cleanup activities were agreed upon and specified in a SS80 Decision Document signed in February 1999. Field work included excavating and removing soil from a five foot wide by five foot long deep area centered around each of three soil boring locations. Excavated soil was transported to a soil thermal remediation contractor for treatment and disposal. Excavation was backfilled with clean soil and surface restored.
Soil sample results indicate that the remaining soil is below Method 2 cleanup levels. Site is closed. |
Louis Howard |
| 7/7/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 73747 name: auto-generated pm edit Elmendorf SS80 Bldg 6263 |
Louis Howard |
