| Action Date |
Action |
Description |
DEC Staff |
| 6/11/2003 |
Meeting or Teleconference Held |
MEMORANDUM FOR FILE FROM: 3 CES/CEVR SUBJECT: Minutes, Remedial Project Manager Meeting, 11 June 2003
A quarterly meeting of the remedial project managers (RPMs) convened at 1430 on 11 Jun 03 in the Environmental Flight (CEVR) conference room, Building 5312. Mr. Louis Howard (Alaska Department of Environmental Conservation (ADEC), Mr. Kevin Oates (Environmental Protection Agency (EPA) - Anchorage), Mr. Gary Fink (CEVR), Mr. Joe Williamson (CEVR), Ms. Donna Baumler (CEVR), and Ms. Doris Thomas (Public Affairs (3WG/PA) attended. Mr. Claude Mayer (CEVR) joined the meeting via teleconference. Mr. Jim Klasen (Legal (11AF/JACE) was attending a training course and was unable to attend.
DP98, Land Use Control Issues (Ms. Baumler). Ms. Baumler stated that the Land Use Control (LUC} Management Action Plan (MAP) was completed in January. It has been updated to include information for DP98. A signature page for the Environmental Protection Committee (EPC) Chairman also has been added. In the future, we plan to have a wing instruction to assist in the enforcement of the MAP. Ms Baumler provided copies of the DP98 inserts which incorporate Mr. Howard's review comments regarding continuous implementation of institutional controls. The MAP will go to the EPC Chairman for signature and should be ready for distribution by the end of the month.
DP98, 2 Jul Meeting for Proposed Plan (Mr Mayer). Mr Mayer stated that the proposed 2 Jul date
would coincide with the date comments were due from agencies and would provide an opportunity to
meet with the contractor to resolve any issues.
Mr. Oates commented that the date would work with his schedule and reminded us that he would be gone in 31 days. He agreed that the meeting would be beneficial. Mr. Oates made a few remarks about the Proposed Plan. He said some new issues have arisen in the last few years, such as groundwater analysis of 1,4-Dioxane. This chemical was sometimes used as a stabilizer for different types of ethenes. Mr. Howard stated that detection requires a different method of analysis from the type we currently use.
Mr. Williamson said that we would add the new analysis to the Basewide Groundwater Monitoring Program next year. |
Louis Howard |
| 4/1/2016 |
Update or Other Action |
Draft UFP-QAPP received for review and comment on several sites with also include this one. Site CG111 - The Johnson Avenue Plume Site is located on Joint Base Elmendorf-Richardson (JBER)-
Elmendorf (JBER-E), in Anchorage, Alaska. CG111 is located southeast of Site CG521 (also known as
ST805-806, which is the former location of two 100-gallon diesel underground storage tanks [USTs]), and consists of an unknown source area identified during the 2013 investigation at CG521. Fuel hydrocarbons are present in the smear zone over a large area along Johnson Avenue.
Soil samples were collected in 2013 from 16 locations in and around site CG111 and submitted for
laboratory analysis of DRO; GRO; residual-range organics (RRO); benzene, toluene, ethylbenzene, and xylenes (BTEX); volatile organic compounds (VOCs); polyaromatic hydrocarbons (PAHs); extractable petroleum hydrocarbons (EPH); and volatile petroleum hydrocarbons (VPH).
One soil boring will be drilled in the suspected source area (CG111-SB01) near previous location
13CG521-SB03 to evaluate the vertical extent of contamination at the highest GRO detection and to
collect soil samples for GRO, DRO, RRO, VOCs (including low level ethylene dibromide [EDB]), PAHs, VPH, EPH, and lead analyses. Nine additional soil borings (CG111-SB02 through CG111-SB10) will be drilled north, east, south, and west of existing contaminated borings to evaluate the lateral and vertical extent of contamination. Samples will be analyzed for GRO, DRO, RRO, petroleum-related VOCs (including EDB), PAHs, and lead. Groundwater samples will be collected at each of the borings just below the water table and analyzed for GRO, DRO, RRO, petroleum-related VOCs (including EDB), PAHs, and lead. The groundwater sample from the suspected source area will also be analyzed for full VOCs (low-level).
Based on the results of the soil and groundwater samples collected during Phase 1, up to five monitoring wells may be installed at selected locations to evaluate the nature and extent of groundwater contamination. Proposed monitoring wells locations will be discussed with the United States Air Force (USAF) and ADEC before installation (via meeting or conference call).
Groundwater samples will be collected from each well and analyzed for GRO, DRO, RRO, petroleum related VOCs (including EDB), PAHs, and lead. Groundwater samples from the source area well(s) will also be analyzed for EPH and VPH.
See site file for additional informaiton |
Louis Howard |
| 4/11/2016 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 4/12/2016 |
Document, Report, or Work plan Review - other |
Staff commented on the UFP-QAPP for several sites.
Main comments were regarding the HRC usage. The HRC approach will not be accepted by ADEC, for site closure in cases where groundwater exceeds Table C cleanup levels for groundwater, regardless of the risk results calculated by the HRC. In these cases, the migration to groundwater cleanup level for soil applies until such time where a minimum number of groundwater monitoring events demonstrates compliance with Table C.
After groundwater is demonstrated to meet Table C, then the HRC results for soil may be considered by ADEC as long as they do not exceed the maximum allowable concentrations, or the more stringent of the direct contact or outdoor inhalation values from Table B1 in the 0-15’ soil interval. ADEC reserves the right to require action if contamination in soil is acting as a continuing source for groundwater contamination, regardless of the levels detected in soil, the depth of contamination, and/or the risks calculated by the HRC.
For unknown sources , ADEC will require that 10% (minimum of one per matrix plus necessary QA/QC samples) of all samples (soil and groundwater) be analyzed for EDB, 1,2-DCA and PCBs from the highest field screening results for soil and groundwater sample from the well closest to the highest soil field screening result, if not the same location.
See site file for additional information. |
Louis Howard |
| 4/13/2016 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79899 name: CG111 Johnson Avenue Plume |
Louis Howard |
| 9/20/2016 |
Site Characterization Workplan Approved |
The Alaska Department of Environmental Conservation (ADEC) has reviewed the work plan for Sites CG111 (Johnson Avenue Plume), CG112 (Wewak) and SS113 (Hatchery North). ADEC has reviewed the work plan and will approve the document as a final version for implementation. |
Louis Howard |
| 9/23/2016 |
Document, Report, or Work plan Review - other |
Staff received the memo to the site file for LF004 OU6. Staff agreed the document may be finalized with the one minor change of frequency of debris removal at LF004 (Operable Unit 6) from annually to once every three years. Tidal activity has been reduced since the completion of the Port of Anchorage Expansion; therefore, the timeframe for debris removal can be reduced. Five-year reviews will assess whether the remedy for LF04 remains protective of human health and the environment. ADEC has no comments on the document and it may be finalized, pending resolution of any comments EPA may have on it. |
Louis Howard |
| 7/28/2017 |
Update or Other Action |
Draft Site Characterization report received for review and comment. No potential risks to ecological receptors were observed, and there is no petroleum hydrocarbon contamination in surface soil (and is therefore less than 0.5 acres) Exposure pathways and routes for ecological receptors are considered insignificant, and receptors are unlikely to be affected by the minimal volume or concentrations of remaining COPCs.
The nature and extent of contamination in soil and groundwater at CG111 has been sufficiently
delineated to move to a cleanup plan. Based on the risk evaluation, the GRO concentration in soil in the southwest portion of the site does not pose a risk to human health or the environment and it is expected that the concentration would typically decrease further to the southwest. The groundwater has been delineated to ADEC cleanup levels,
See site file for additional information.
|
Louis Howard |
| 9/18/2017 |
Document, Report, or Work plan Review - other |
Staff commented on the draft Site Characterization report. Main comments were regarding the need for using the most current July 1, 2017 18 AAC 75 regulations for cleanup and risk screening levels and to investigate any other theoretical referenced sources of contamination (e.g. the fuel tank farm). Final comment was regarding the status of samples associated with sample data package 16F064 that was referenced, but no case narrative or results were presented in the document describing their absence.
See site file for additional information. |
Louis Howard |
| 7/2/2018 |
Update or Other Action |
Final Site Characterization report for CG111 - Johnson Avenue Plume received. The main soil source area begins at approximately 10' bgs, extends vertically to 25' bgs, & covers an area of 10.4 acres (1,100' long by 550' wide) for a volume of 9,060,500 cubic feet or 335,600 cubic yards. A separate groundwater (GW) contaminant plume consisting of DRO and mercury above screening levels is present in the eastern portion of the site. DRO, 1,1,2,2-PCA, 1,2,4-Trimethylbenzene, 1,4-Dichlorobenzene, 2-Hexanone, benzene, naphthalene, trichloroethene, and mercury are COCs in GW. CG111 will be included in the 2020 JBER optimized remediation contract (ORC) for further investigation/remediation. Cumulative hazard quotient, residential scenario = 2 (above 1) and excess lifetime cancer risk for residential scenario = 2 x 10-4 (above 1x10-5). Main contributors: 1,1,2,2-Tetrachloroethane for ELCR & various volatile organic compounds plus mercury for HQ exceedances in GW.
See site file for additional information. |
Louis Howard |
| 4/12/2021 |
Document, Report, or Work plan Review - other |
DEC submitted comments on Draft JBER Basewide UFP-QAPP dated February 2021. |
William Schmaltz |
| 5/19/2021 |
Document, Report, or Work plan Review - other |
DEC Reviewed and approved of Basewide Uniform Federal Policy - Quality Assurance Project Plan. QAPP summarizes general activities for a 5 year period on JBER. |
William Schmaltz |
