Site Report: Allen Marine Shipyard
| Site Name: | Allen Marine Shipyard |
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| Address: | 5303 Halibut Point Road, (Fraction Lot 4 US Survey 3670 and Alaska Tideland Survey 684 Tract A), Sitka, AK 99835 |
| File Number: | 1525.38.058 |
| Hazard ID: | 27325 |
| Status: | Active |
| Staff: | Stacee Henderson, 9072628202 stacee.henderson@alaska.gov |
| Latitude: | 57.128332 |
| Longitude: | -135.381775 |
| Horizontal Datum: | WGS84 |
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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
On April 01, 2002, three composite samples were collected from the Allen Marine Shipyard. The samples were collected from the maintenance shop floor (shop), the marine railway area (sandblast area) and a test pit area (test pit) west of the marine rail structure. Contamination was identified near the Allen Marine Shipyard based on the following sample results and observations. A composite soil sample results collected from the marine railway sandblasting area indicate arsenic, chromium, and cadmium (7.6 mg/kg) at concentrations exceeding ADEC cleanup levels (depth of samples not provided). The maintenance shop contained diesel range organics at 1,900 mg/kg, residual range organics at 13,000 mg/kg, arsenic from 41 to 512 mg/kg, and chromium from 67 to 102 mg/kg. An oil layer, appearing to be bunker oil, in the test pit on the property had high headspace readings. In sediment samples seaward of the Allen Marine Shipyard, elevated levels of arsenic 1,060 mg/kg, copper 2,940 mg/kg, lead 1,910 mg/kg, zinc 7,590 mg/kg, tributyltin 13 mg/kg, benz(a)pyrene 2.6 mg/kg, and tri-n-butyltin 13 mg/kg, and detections of polychlorinated biphenyls (PCBs). Stained areas (6 inches to 2 feet in diameter) were observed in the maintenance shop and sandblasting grit, which had the appearance of black sand, was observed covering most of the area between the concrete marine rails.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 7/5/1991 | Document, Report, or Work plan Review - other | Hazardous Waste Inspection Report. Inspection took place on 2/27/1991. | Julie Fix |
| 1/1/2002 | Document, Report, or Work plan Review - other | Phase I ESA, Phase II ESA, intertidal sediment sampling and an eelgrass survey conducted by Golder for AKDOT. | Julie Fix |
| 6/1/2003 | Document, Report, or Work plan Review - other | Final "Site Data Review and Risk Screening for Starrigavan Bay Sediments" submitted by SLR AK. | Julie Fix |
| 3/1/2021 | Document, Report, or Work plan Review - other | On March 01, 2021 ADEC received "Sediment and Shellfish Sampling Report Starrigavan Bay Sitka, Alaska" dated February 2021. The report summarizes investigations of the presence of contamination by collecting clam specimens in nine locations and by collecting sediment samples in six locations. These field activities were performed during July of 2020. | Rachael Petraeus |
| 4/5/2021 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 4/20/2021 | Potentially Responsible Party/State Interest Letter | On April 20, 2021 ADEC sent out PRP letter to David Allen. | Rachael Petraeus |
| 5/11/2021 | Update or Other Action | May 11, 2021 PM change to Julie Fix. | Rachael Petraeus |
| 5/18/2021 | Document, Report, or Work plan Review - other | Final revised "Sediment and Shellfish Sampling Report Starrigavan Bay Sitka, AK” report received. Report approval letter sent on 11/24/2021. | Julie Fix |
| 1/2/2022 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 80761 name: Maintenance Shop | Julie Fix |
| 1/2/2022 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 81135 name: Sandblasting Area | Julie Fix |
| 1/2/2022 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 81136 name: Intertidal Area | Julie Fix |
| 3/14/2022 | Update or Other Action | Email from the Sitka Tribe. Courtesy notification of the tribe's plan to create a new site at the Starrigavan estuary and clamming area through the tribal Brownfields Inventory with the Brownfields Tribal Response Program. The tribe is concerned with the elevated levels of arsenic and cadmium found in clams in this area (near the Sitka Sportsman's Association and Allen Marine Shipyard sites) and would like to continue investigating. Updated stakeholders tab with new point of contact information for Sitka Tribe. | Julie Fix |
Contaminant Information
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Requirements
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There are no documents for this site report.
No associated sites were found.