Skip to content Skip to content

Site Report: Hilcorp Endicott SM 605 Spill (BPX)

Site Name: Hilcorp Endicott SM 605 Spill (BPX)
Address: Endicott Island , Prudhoe Bay, AK 99734
File Number: 300.38.187
Hazard ID: 3262
Status: Cleanup Complete - Institutional Controls
Staff: Andrea Carlson, 9074515174 andrea.carlson@alaska.gov
Latitude: 70.354167
Longitude: -147.958333
Horizontal Datum:

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

High-level alarm and block valve failed while fueling a fire pump day tank. Overfill resulted in diesel spill of 200 gallons on 6/6/99 near middle of pad. Excavation of about 80yd of contaminated soil 6/17/99 together with soil tests for DRO/BTEX delineated the spill area. DRO and BTEX detected in one of 5 samples. Diesel contaminated soil removed is in a lined pit awaiting thermal remediation. As of 7/12/99 excavation was open waiting for ADEC determination. Some diesel contamination (5yd) remains under Skid 605 and removal threatens structure. Spill number 99399915702 PERP file number 300.02.080

Action Information

Action Date Action Description DEC Staff
7/12/2000 Site Added to Database Diesel contamination. Former Staff
7/21/2000 Site Ranked Using the AHRM Module at center of Pad. 5 cubic yards of DRO contaminated soil under Module is unlikely to impact surface water or tundra related receptors. Bruce Wanstall
3/21/2007 Exposure Tracking Model Ranking Bill O'Connell
11/10/2008 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with the BPX Endicott Skid Module (SM) 605 Spill located at Endicott Island, Alaska. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action will be required as long as the site is in compliance with established institutional controls. Bill O'Connell
11/10/2008 Institutional Control Record Established Institutional Controls established and entered into the database. Bill O'Connell
12/8/2011 Update or Other Action The visual inspection of this site originally slated for 2011 will be conducted in 2012. Bill O'Connell
6/12/2012 Institutional Control Compliance Review An IC review was conducted on this site, the reminder/tracking system was updated, and the staff assigned was changed from Bill O'Connell to IC Unit. Evonne Reese
6/19/2013 Document, Report, or Work plan Review - other Date of receipt of 2012 Visual Site Assessment Monitoring report. Visual inspection took place on July 14, 2012. No sheen or other visual evidence of petroleum presence in the area around or beneather SM 605. Keather McLoone
10/6/2014 Institutional Control Update Current project manager chooses to retain management of the site at this time. Kristin Thompson
12/17/2014 Potentially Responsible Party/State Interest Letter Letter to Hilcorp as new operator. Keather McLoone
6/1/2015 Update or Other Action Email communication on today's date clarifying third party requirement for visual monitoring requirement due to be conducted in 2015. Keather McLoone
12/15/2015 Document, Report, or Work plan Review - other Date of receipt of Endicott SM 605 Spill - 2015 Visual Site Assessment Monitoring Report. A visual inspection of the site was conducted on 8/15/15 in which no evidence of hydrocarbon odor, sheening or staining was observed. ADEC report response letter will concur that the next visual monitoring report should be conducted by Hilcorp in 2018. Keather McLoone
9/28/2016 Update or Other Action At this time, the project manager chooses to retain management of this site which has institutional controls. IC Unit
6/5/2018 Document, Report, or Work plan Review - other Reviewed Work Plan titled 2018 MPU A & B PAD COMPLIANCE MONITORING, MPU B & C PAD THERMISTOR MONITORING, AND EMPI SKID MODULE 605 INSPECTION, dated May 22, 2018. The work plan proposes monitoring at the 605 spill site. ADEC issued a work plan approval via email on June 5, 2018. A report is due by January 2019. Joshua Barsis
1/15/2019 Document, Report, or Work plan Review - other Reviewed the Endicott SM 605 Spill - 2018 Site Inspection, dated December 27, 2018. A visual inspection of the site was conducted on 8/03/18 in which no evidence of hydrocarbon odor, sheening or staining was observed. ADEC will not require further site inspections beyond 2018. Joshua Barsis

Contaminant Information

Name Level Description Media Comments
DRO > Method 1 (Arctic only) Soil

Control Type

Type Details
Other Periodic reporting every three years to ADEC on site status is required.

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
When Contaminated Soil is Accessible, Remediation Should Occur When skid module is moved or Endicott Island is decommissioned, the soil must be removed

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close