| Action Date |
Action |
Description |
DEC Staff |
| 7/21/1993 |
Document, Report, or Work plan Review - other |
Letter to Mr. Craig Valentine, United States Air Force, 611 CES/CEVC RE: ADEC/STP review of the August 1999, UST Post-Closure Reports, Tatalina LRRS. Facility ID 769, Tanks # 769-1 (AFID 3024), 769-2 (AFID 76-200), 769-3 (AFID 3055), 769-4 (AFID 3065), 769-5 (AFID 769-6), & 769-6 (AFID 769-7).
On December 21, 1999, The Alaska Department of Environmental Conservation, Storage Tank
Program (ADEC) received UST Post-Closure Sampling Reports for six underground storage
tanks (USTs), formerly located at the Tatalina Long Range Radar Station, located near Tokatna,
Alaska. The ADEC has completed a review of the documents and has the following comments:
General Comments:
- At ADEC's request, the Air Force conducted post-closure investigations of six USTs that
were thought to have been removed from the ground in 1987, as part of the close-out of the
radar station lower camp. In accordance with the approved work plan, if the investigation of
the former tank location indicated a tank was not present the tank was assumed to have been
removed from the ground, and no soil samples were required. If a tank was located, it was
excavated and the surrounding soil was field screened and confirmation samples were
collected and analyzed.
Specific Comments
- Tank 769-1. A metal scan of the ground around the surveyed tank location was performed
using a Schonstedt GA-25B Magnetic Locator. The metal scan found one tank that was
excavated and determined to be a former septic tank. Soils below the tank were field screened
to determine the presence of petroleum contamination. The field screening results (PID
readings of 0.0 units) indicated no petroleum contamination was present. As a result of this
investigation, the ADEC is not requesting the Air Force to do any further investigation of the
former UST. The ADEC UST database will be updated to show the tank was removed from
the ground and no contamination was noted during the investigation.
- Tank 769-2. Results of soil samples collected in the vicinity of the former UST indicate
petroleum contamination is present exceeding ADEC cleanup levels for DRO and GRO
contaminants. It is my understanding that additional release investigation and corrective
action is underway and is being coordinated through the ADEC Contaminated Sites Program.
The ADEC UST database will be updated to show the UST was removed from the ground,
contamination was found above ADEC cleanup levels, and corrective action is being
coordinated through the Contaminated Sites Program.
- Tank 769-3. A metal scan survey of the former UST area was conducted and no metal
anomalies were noted. In accordance to the approved workplan no soil samples were
collected. The ADEC UST database will be updated to show the tank status as closed and
removed from the ground.
- Tank 769-4. The ADEC issued a no further action for this UST on July 28, 1999. As part of
the August 1999 investigative work, the Air Force was asked to inspect the 70 cy stockpile
associated with this tank closure to see if other soils were added to it. The report indicates
that stockpile is 24 feet wide by 33 feet long by 2.25 feet, containing approximately 70 cy.
ADEC has determined the stockpiled soil is not a treat to the environment and recommends
the stockpile be dismantled and the soils placed in non-environmental sensitive areas.
- Tanks 769-5 & 6. Soil samples collected in the vicinity of former tanks 769-5, and 769-6
indicated contamination is present exceeding ADEC cleanup levels for DRO & GRO
contaminants. It is my understanding that additional release investigation and corrective
action is underway and is being coordinated through the ADEC Contaminated Sites Program.
The ADEC UST database will be updated to show the USTs were removed from the ground,
contamination was noted above ADEC cleanup levels, and corrective action is being
coordinated through the Contaminated Sites Program. |
Tim Stevens |
| 6/17/1999 |
Document, Report, or Work plan Review - other |
ADEC Letter to Craig Valentine, 611 Air Support Group, Environmental Compliance Section. Subject: Draft Work Plan Underground Storage Tank Post Closure Investigations, Tatalina LRRS, Alaska.
The Alaska Department of Environmental Conservation (ADEC), DoD Oversight group, received the Draft Work Plan Underground Storage Tank Post Closure Investigations (dated June 4, 1999) on June 4, 1999. We have completed our review & provided comments below. Please note that although a copy of the Site Safety & Health Plan is appreciated, the Department does not review these plans; a trained Industrial Hygienist should be consulted regarding the contents & completeness of the plan.
Specific comments
1. (pg. 1-2) Table: The associated building for ADEC Tank ID 769- 5 & -6 should be corrected to Building 76-200 instead of Building 26-200.
2. (pg. 1-3) 1.3 Site History: Building 76-200 should be located on the site figures. & for reference purposes the SpilllLeak No.5 identification should be related to the current site identification.
3. (pg. 1-9) Figure 1-2:
- A figure legend is necessary.
- Include a discussion on the red dashed lines throughout the Lower Camp site; these lines appear to connect SS-003 POL Tank Farm to individual USTs within the Lower Camp site. If a fuel pipeline system was utilized, then investigation & appropriate sampling per 18 AAC 78 Underground Storage Tanks (as amended through January 22, 1999) is required.
- Please note that there is an inconsistency between the RIlFS investigation & this workplan regarding the location of a UST near Building 3015. The RI/FS indicated that a UST was located near Building 3015, & subsequently Boring BH7 was placed to investigate this UST. However, this workplan does not identify this UST, & no investigation or reporting requirements are anticipated. This inconsistency should be addressed prior to the start of fieldwork.
4. (pg. 2-4) 2.3.1 Confinned Presence / Absence of USTs:
- Include infonnation on equipment calibration & maintenance.
- It is stated that the excavations will be backfilled with the excavated material, & that the excavated material will not be field screened or sampled. The excavated material should be field screened with appropriate field screening equipment, placed on a liner during the excavation activities, & observations need to be recorded within a field notebook & described within the Post Closure Investigations report.
If no tank is encountered & no soil contamination is evident through field screening, & visual & olfactory observations of the excavated soil an excavation pit, then simply recording this information is sufficient. However, if a tank is encountered then the requirements of 18 AAC 78 & associated guidance documents need to be followed & documented accordingly. See "3.3 Field Activities at Each UST Location" below for additional comments.
- It is stated that one boring will be placed between 10 feet & 20 feet off to the side of the tank's center, & one boring will be placed between 10 feet & 20 feet past the tank edge as the demolition debris allows. These borings need to be placed as close to the tank center & tank edges as possible. & if the tank fill port location is undetermined, then three borings are necessary.
- It is stated that if demolition debris prevents borings as specified above, no borings will be drilled. Since the locations of debris & fill material are unknown, the next course of action should be use of the excavator to determine if the tank is present or has been previously removed.
5. (pg. 2-4) 2.4 Soil Boring: It is stated that the soil from the samplers will be examined & characterized. The soil should be classified using the Unified Soil Classification System (USCS).
6. (pg. 3-1) 3.1 Field Activities: Field screening, & soil sampling (excavation & split-spoon) SOPs should be described within this &/or another appropriate section. Also, the sample handling & shipping should be clearly discussed.
7. (pg. 3-3) Table 3-3:
- The analytical methods for BTEX on soil & water are different; provide the rationale for 8260 on soil, & 8021 b for water.
- The analytical method 8260 should have the qualifying "b" following the method number.
- The analytical method 8270 SIMs should have the qualifying "c" following the method number.
8. (pg. 3-4) Table 3-4:
- The Method 2 inhalation soil cleanup level for ORO is 12,500 mg/kg not 5,000 mg/kg.
- The Method 2 ingestion soil cleanup level for total xylenes is 213,000 mg/kg not 103,000 mg/kg.
- Include the typical PQL numbers or range of numbers for BTEX.
- Include the Method 2 soil cleanup levels for lead.
For additional information see site file. |
Gretchen Pikul |
| 6/22/1999 |
Document, Report, or Work plan Review - other |
Review letter sent to Craig Valentine, United States Air Force, 611 CES/CEVC by ADEC (Tim Stevens). RE: ADEC Storage Tank Program review of the "Draft Post Closure Investigation, Tatalina Long Range Radar Site" work plan, Tatalina LRRS, Alaska; Facility ID 769.
The Alaska Department of Environmental Conservation (ADEC), Storage Tank Program (STP) has
reviewed the "Draft Post Closure Investigation, Tatalina Long Range Radar Site" work plan
submitted by Montgomery Watson on June 4, 1999.
General Comments: The Department has the following general comments about the work covered
under the proposed work plan. According to records filed by the Air force the five underground
storage tanks (USTs) covered under this work plan where closed in 1987.
However, the Air force was not able to confirm the USTs were removed from the ground or filed with inert material, as required by industry standards. The purpose of the proposed work is to investigate whether the five tanks still exist and to gather soil contamination information if the tanks are found.
It is the Department's interpretation of the federal UST regulations that ifan UST was closed - removed from the ground or filled with an inert material - prior to 1988, a site assessment is not required unless the Department has information that would lead it to believe that contamination exists and is a threat to human health or the environment.
Therefore, if after using the best technology available, the Air force is unable to locate the USTs, the Department will not require a site assessment (soil sampling) for these tanks. If the USTs are located, and contain product, the Air force must be prepared to emptied the tanks, store the fuel in a safe manner until it can be disposed of properly and conduct a site assessment of excavations.
Specific Comments:
Section 2.2.2: Please justify the limit of two metal anomalies at each UST location. If the location of the anomalies is the location where the UST is thought to be located the Air force must thoroughly investigate the area.
Section 2.3.1: If the USTs are found and contain product, the Airforce must be prepared to remove and safety stored the product until it can be properly disposed of and be prepared to do a site assessment of the UST excavations. If the USTs are located, soil borings must be drilled within two feet of the tank and samples collected from within two feet of the bottom of the tank.
It appears the Air force does not plan to do a site assessments if the tanks are found. At a minimum, the Department is requesting the Airforce to field screen soil from the UST excavations. Field screening will be used to determine if additional work is warranted at the site. If a site assessment of the USTs is not plan at this time the Department is requesting the Airforce to submit a schedule to indicate when the site assessments would be done.
If debris is present, placing borings 10 to 20 feet from the center of the debris will not provide the Airforce or the Department with enough useful information. If the tank is present or is thought to exist at the center of the debris, samples collected from borings placed 10 to 20 feet away most likely would not find evidence of a release, unless the borings are very deep, or the contamination hit a soil confining layer and moved in the direction of the boring.
If the location where the tanks are thought to exist has a lot of debris, the Airforce should either dig test pits to determine if the tank is present.
Table 3.3: The analytical method proposed for PAHs should be SW 8260C.
Section 3.3.1- UST Site 769-1: If tanks are not found in the location where they are thought to exist, the Air force is not required to collect confirmation samples. However, field screening of excavated soil is appropriate to determine if a threat to human health or the environment exists.
Section 3.3.4: The Airforce has not presented information in this work plan as to how it plans to "inspect" the 70 CY stockpile generated from the removal of UST 769-4. If the Air force plans to dispose of the soil, three confirmation soil samples must be collected from the stockpile. The stockpile must be field screened at a rate of one field screening for every 10 cy of soil.
The three confirmation samples must be collected from the area where the three highest field-screening results occurred. Confirmation samples must be analyzed from BTEX and GRO using AK 101 or a combination of AK 101 and 8260B. |
Tim Stevens |
| 7/28/1999 |
Update or Other Action |
Review letter sent to Craig Valentine, United States Air Force, 611 CES/CEVC. Re: ADEC/STP review of the final release investigation report for UST #004 (Airforce ID 3065), Tatalina Long-Range Radar Site, Tatalina, Alaska; Facility ID 769 [NOTE TO FILE: this is UST 769-4].
The Alaska Department of Environmental Conservation (ADEC), Storage Tank Program (STP) has reviewed the release investigation report documenting soil and water data gathered during the September 18th and 19th, 1994 release investigation of the former underground storage tank (UST) site. The release investigation was requested by the Department after contamination was found during the 1993 closure of the 275-gallon regulated gasoline UST.
Based on information and laboratory data contained in the release investigation report, no further action is required by the Department. The 70 cy of soil stockpiled as part of the UST closure may be dismantled and the soil reused on site, as long as it is not place in wet lands or an environmentally sensitive area.
In the future, should contaminated soil or groundwater be discovered on site that exceeds
state cleanup standards, appropriate site assessment and cleanup will be required in accordance
with applicable State regulations. |
Tim Stevens |
| 12/21/1999 |
Update or Other Action |
Final Post-Closure Report, ADEC UST NO. 769-1 769-2, 769-3, 769-4, 796-5, 769-6, Tatalina LRRS, Alaska dated December 20, 1999 received by staff on December 21, 1999.
Pursuant to Contract No. DACA85-98-D-007, the United States Army Engineer District, Alaska (Alaska District), contracted Montgomery Watson to confirm the removal of six underground storage tanks (USTs) at the Tatalina Long Range Radar Site (LRRS) and perform site assessments for any tanks found. Montgomery Watson's UST Post-Closure Investigation Work Plan, Tatalina LRRS (August 13, 1999) described the project background, investigative approach, field effort, sampling plan, and quality assurance project plan. This post-closure letter report specifically describes the results of the investigation of Alaska Department of Environmental Conservation (ADEC) UST No. 769-1, 769-2, 769-3, UST No. 769-4 Stockpile, 769-5 and 769-6.
On April 30, 1986, ADEC UST Nos. 769-1, -2, -3, -5, and -6 were registered temporarily out of service. In 1987, the United States Air Force (USAF) performed a demolition of the Lower Camp at Tatalina LRRS. All the buildings associated with ADEC UST Nos. 769-1, -2, -3, -5, and -6 were removed. The records of the demolition did not specify if the USTs were removed, but removal of tanks no longer in use was the standard procedure at the time, according to Lawrence Willey, the USAF demolition supervisor.
The ADEC UST No. 769-4 Stockpile investigated is located at the landfill on the north side of the road between the Lower camp and the Airstrip. A site plan of the ADEC UST No. 769-4 Stockpile is shown on the attached Figure 2. Between October 27, 1993 and November 8, 1993, ADEC UST No. 769-4, formerly located adjacent to Building 3065, was removed. Approximately 70 cubic yards of soil was placed in the ADEC UST No. 769-4 Stockpile. A Post-Closure Site Assessment for the UST was (missing page after this).
NOTES TO FILE:
769-1 Potential No Further Action
769-2 Diesel range organics (DRO) 14,000 mg/kg Gasoline range organics 1,400 mg/kg Cleanup under IRP and the CS Program
769-3 Possible NFA, need more information about metal anomaly found explain text found on page 3.
769-4 NFA was issued on 7/27/1999.
769-5 DRO 682 mg/kg Talk with CS Program (G. Pikul) about cleanup of this UST site and 769-2. Does CS Program believe contamination is being addressed.
|
Tim Stevens |
| 4/28/2000 |
Document, Report, or Work plan Review - other |
Review letter sent to Mr. Craig Valentine, United States Air Force, 611 CES/CEVC by ADEC (Tim Stevens). Re: ADEC/STP review of the August 1999, UST Post-Closure Reports, Tatalina LRRS.
Facility ID 769, Tanks # 769-1 (AFID 3024), 769-2 (AFID 76-200), 769-3 (AFID 3055), 769-4
(AFID 3065), 769-5 (AFID 769-6), & 769-6 (AFID 769-7).
On December 21, 1999, The Alaska Department of Environmental Conservation, Storage Tank
Program (ADEC) received UST Post-Closure Sampling Reports for six underground storage
tanks (USTs), formerly located at the Tatalina Long Range Radar Station, located near Tokatna,
Alaska. The ADEC has completed a review of the documents and has the following comments:
General Comments:
- At ADEC's request, the Air Force conducted post-closure investigations of six USTs that were thought to have been removed from the ground in 1987, as part of the close-out of the radar station lower camp. In accordance with the approved work plan, if the investigation of the former tank location indicated a tank was not present the tank was assumed to have been removed from the ground, and no soil samples were required. If a tank was located, it was excavated and the surrounding soil was field screened and confirmation samples were collected and analyzed.
Specific Comments.
- Tank 769-1. A metal scan of the ground around the surveyed tank location was performed
using a Schonstedt GA-25B Magnetic Locator. The metal scan found one tank that was excavated and determined to be a former septic tank. Soils below the tank were field screened to determine the presence of petroleum contamination. The field screening results (PID readings of 0.0 units) indicated no petroleum contamination was present. As a result of this investigation, the ADEC is not requesting the Air Force to do any further investigation of the former UST. The ADEC UST database will be updated to show the tank was removed from the ground and no contamination was noted during the investigation.
NOTE TO FILE: non-qualifying status designation is granted until such time new information indicates contamiantion exists that exceeds cleanup levels and/or is a risk to human health, welfare, safety and of the environment.
- Tank 769-2. Results of soil samples collected in the vicinity of the former UST indicate
petroleum contamination is present exceeding ADEC cleanup levels for DRO and GRO contaminants. It is my understanding that additional release investigation and corrective action is underway and is being coordinated through the ADEC Contaminated Sites Program. The ADEC UST database will be updated to show the UST was removed from the ground, contamination was found above ADEC cleanup levels, and corrective action is being coordinated through the Contaminated Sites Program.
- Tank 769-3. A metal scan survey of the former UST area was conducted and no metal anomalies were noted. In accordance to the approved workplan no soil samples were collected. The ADEC UST database will be updated to show the tank status as closed and removed from the ground.
NOTE TO FILE: non-qualifying status will given until such time new information indicates contamiantion exists that exceeds current cleanup levels and/or is a risk to human health, welfare, safety and of the environment.
- Tank 769-4. The ADEC issued a no further action for this UST on July 28, 1999. As part of the August 1999 investigative work, the Air Force was asked to inspect the 70 cy stockpile associated with this tank closure to see if other soils were added to it. The report indicates
that stockpile is 24 feet wide by 33 feet long by 2.25 feet, containing approximately 70 cy.
ADEC has determined the stockpiled soil is not a threat to the environment and recommends
the stockpile be dismantled and the soils placed in non-environmental sensitive areas. NOTE TO FILE: Cleanup complete designation is granted until such time new information indicates contamiantion exists that exceeds current cleanup levels and/or is a risk to human health, welfare, safety and of the environment.
- Tanks 769-5 & 6. Soil samples collected in the vicinity of former tanks 769-5, and 769-6
indicated contamination is present exceeding ADEC cleanup levels for DRO & GRO contaminants. It is my understanding that additional release investigation and corrective action is underway and is being coordinated through the ADEC Contaminated Sites Program. The ADEC UST database will be updated to show the USTs were removed from the ground, contamination was noted above ADEC cleanup levels, and corrective action is being coordinated through the Contaminated Sites Program. |
Tim Stevens |
| 4/28/2002 |
Site Closure Approved |
See previous entry for details. |
Gretchen Pikul |
| 2/1/2006 |
Update or Other Action |
File number issued 2655.38.017. |
Aggie Blandford |
| 2/3/2021 |
Update or Other Action |
Bulk action entry - all Tatalina LRRS sites x-referenced with the general file, 2655.38.001, on this date. |
Cascade Galasso-Irish |
