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Site Report: Alaska Marine Lines - Mt. Roberts St.


Site Name: Alaska Marine Lines - Mt. Roberts St.
Address: 100 Mt. Roberts Street, Juneau, AK 99801
File Number: 1513.26.079
Hazard ID: 26523
Status: Cleanup Complete
Staff: ,
Latitude: 58.287056
Longitude: -134.390988
Horizontal Datum:WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Problems/Comments

The UST was excavated without incident and the tank and all of the lines appeared in good condition. There were no visible, olfactory, or other indicators that a release had occurred. The tank had been pumped of fuel prior to removal and no residual fuel or sludge was present during closure activities. Soils were field screened using a photoionization detector (PID) during the excavation and field screening results indicated that no soils had been impacted by tank operation activities. No samples were submitted for laboratory analysis. ADEC regulations regarding UST assessment during a closure by removal require the collection of analytical samples from specified locations. A follow-up release investigation was required per 18 AAC 78.090, due to the fact that no laboratory samples were collected when the tank was removed. On May 22, 2015, Nortech mobilized to the site to collect the necessary samples for tank closure. Soils were field screened using a PID and again, no evidence of contamination was found. A total of three (3) soil samples for laboratory analysis were collected, with a sample collected from below the fill end, below the dispenser, and on the downslope side of where the tank had been located. A duplicate soil sample was also collected and these were analyzed for diesel range organics (DRO), gasoline range organics (GRO), residual range organics (RRO), and benzene, toluene, ethylbenzene, and xylenes (BTEX). The sample results were below their respective 18 AAC 75.341, default Method Two cleanup levels.

Action Information

Action Date Action Description DEC Staff
2/16/2016 Site Added to Database A new site has been added to the database Nathan Maxwell
2/16/2016 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST site created in CSP database for source area UST #4, 79881 Nathan Maxwell
2/19/2016 Potentially Responsible Party/State Interest Letter Sent PRP letter this date. Danielle Duncan
2/19/2016 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79881 name: UST #4 Danielle Duncan
2/22/2016 Update or Other Action Sent a work plan request letter this date after discussing the site needs with Lyden Transport. In order to complete the regulated UST closure for the site, the ADEC requests that the material once-excavated, now in place in the footprint of the former UST be sampled according to 18 AAC 78.090 (2)(A)(i) where the surface area of an individual tank is less than 250 square feet – at least two borings or test pits must be made from which analytical soil samples are collected – this is a minimum requirement. The Underground Storage Tanks Procedures Manual requires that field screening occur and that soil samples having the highest field screening results be selected for laboratory analysis. Based on the data in the report, please have at least 2 soil samples and 1 duplicate analyzed for diesel range organics (DRO) and benzene, toluene, ethylbenzene, and xylenes (BTEX). Danielle Duncan
3/31/2016 Update or Other Action Sent request for work plan certified 7014 2120 0001 4209 6649 Danielle Duncan
4/27/2016 Report or Workplan Review - Other Rec'd Nortech's letter report "Re: Regulated Tank Closure at the Alaska Marine Lines Facility, 100 Mt. Roberts, Juneau, AK. 99801" this date. Danielle Duncan
5/23/2016 Site Characterization Report Approved Approved the letter report regarding post-UST closure sampling activities. No DRO nor BTEX were detected in the samples. The ADEC will close the site out in the next few weeks. Danielle Duncan
6/27/2016 Cleanup Complete Determination Issued A follow-up release investigation was required per 18 AAC 78.090, due to the fact that no laboratory samples were collected when the tank was removed. On May 22, 2015, Nortech mobilized to the site to collect the necessary samples for tank closure. Soils were field screened using a PID and again, no evidence of contamination was found. A total of three (3) soil samples for laboratory analysis were collected, with a sample collected from below the fill end, below the dispenser, and on the downslope side of where the tank had been located. A duplicate soil sample was also collected and these were analyzed for diesel range organics (DRO), gasoline range organics (GRO), residual range organics (RRO), and benzene, toluene, ethylbenzene, and xylenes (BTEX). The sample results were below their respective 18 AAC 75.341, default Method Two cleanup levels. Danielle Duncan
6/27/2016 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79881 UST #4. Danielle Duncan
8/1/2016 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Administrative action addition for grant reporting purposes. Evonne Reese

Contaminant Information

Name Level Description Media Comments
DRO < Method 2 Most Stringent Soil

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Missing Location Data

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