| Action Date |
Action |
Description |
DEC Staff |
| 3/11/2005 |
Site Added to Database |
GRO and DRO. |
Sarah Cunningham |
| 7/7/2005 |
Site Characterization Report Approved |
Assessment approved 8/7/2003 by L. Nuechterlein to characterize the levels and extent of hydrocarbon contamination on the gravel pad. |
Sarah Cunningham |
| 7/7/2005 |
Update or Other Action |
Final Site Assessment Report received 7/15/2004. |
Sarah Cunningham |
| 7/7/2005 |
Site Ranked Using the AHRM |
Medium Priority. There is approximately 2,000 cubic yards of soil contaminated above 300ppm GRO or above 2,000 ppm DRO. Red Barn Pond is 100 feet to the northwest. |
Sarah Cunningham |
| 12/12/2007 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Grant Lidren |
| 12/1/2009 |
Document, Report, or Work plan Review - other |
Reviewed CAP for Kuparuk State #1 including Red Barn Storage Pad. Both gravel pads will be removed along with the site structures, and reserve pit waste will be capped in place. Data from previous assessments found DRO up to 2,150 mg/kg at one of two areas of hydrocarbon impacts at Red Barn Pad and DRO up to 16,200 mg/kg on the north side of the Kuparuk State 1(KS1) Pad. Much of the contamination on the KS1 pad is centered around the well head suggesting contaminated material came from down hole and is E&P exempt. One small area of contaminated tundra was also noted west of the KS1 pad, but was shown to be very localized and due to the presence of healthy tundra vegetation, will not be addressed as part of the CAP. Asbestos, lead based paint, and PCB-and mercury-containing materials are also present in the Red Barn itself and will be removed and disposed of prior to the gravel pad work. Gravel at the pad will be categorized as clean, conditional use, restricted use, or contaminated based on a combination of existing data and new sample analyses as required. If gravel stockpiling is necessary, stockpiles will be sampled for characterization purposes prior to reuse. Once the gravel pad is removed, confirmation samples will be collected to document the cleanup efforts and for use in developing institutional controls, if required. Clean and conditional use gravel with DRO less than 500 mg/kg will be used onsite as reserve pit backfill, restricted use and contaminated gravel will be transported to the East Dock landfarm for treatment. |
Bill O'Connell |
| 5/12/2010 |
Update or Other Action |
CAP Addendum reviewed. During debris removal activities at a location referred to as Red Barn Pond, located just north of the access road where it enters the pad, a 'flash' and small fire occurred, presumably after disturbing petroleum products that remained in a crushed drum as it was being removed from the pond. Activities were halted and an investigation into the cause is being conducted. In an effort to determine the extent of the problem, Oasis will be collected soil samples under a CAP Addendum. The addendum calls for composite waste characterization samples to be collected from soil adhering to debris that has already been removed from the pond, and discete soil samples to be collected from the pond excavation area. Further action at the site will be based on the results of the soil samples. |
Bill O'Connell |
| 7/29/2010 |
Document, Report, or Work plan Review - other |
Reviewed Red Barn Pad Corrective Action Plan Addendum #2. Waste characterization samples collected from the debris pile contained TCLP lead concentrations above RCRA limits, indicating the soil must be treated as hazardous waste. Additionally during excavation of the Red Barn Pad itself, sacks of what appeared to be drilling additives were found buried in the gravel pad. Samples of the material failed TCLP limits for chromium and the segregated material from this location will also be treated as hazardous waste. ACM and LBP contained in the Red Barn Structure and ATCO trailers will be disposed of at the Fairbanks landfill, non ACM and LBP material will be disposed of at the Oxbow landfill. Additional activities included in this addendum include debris removal and disposal, and additional delineation and sampling of lead and chromium impacted areas. The remaining tasks from the initial CAP include gravel pad and roadway removal and mitigation of the remaining debris in the pond. |
Bill O'Connell |
| 9/14/2010 |
Document, Report, or Work plan Review - other |
Reviewed Red Barn Corrective Action Plan Addendum #3. This addendum is necessary to provide for the delineation and characterization of lead and chromium impacted material on the Red Barn Pad. Lead contaminated soil was found in association with debris that was excavated from the debris pond and temporarily stored on the pad. Chromium impacts are associated with drilling mud containing chromium that was left on the pad. Since Addendum #2 was issued, the debris pond stockpile has been removed along with culverts and fuel storage area liners. In August 2010, field screening was conducted using an XRF in the areas of suspected impact to guide the collection of analytical samples. TCLP analysis indicated three samples exceeded the TCLP limit for chromium. Barium was also found above background concentrations but did not exceed TCLP limits. Sampling of suspected lead contaminated soil indicated one area with lead concentrations likely to exceed TCLP.
Chromium impacted areas will be excavated, stockpiled, and sampled to determine disposal requirements. Soil with TCLP results that exceed TCLP will be disposed of at a RCRA landfill in the lower 48. Chromium impacted soils that pass TCLP will be disposed of at the DS4 G&I Plant. Confirmation samples will be collected and analyzed only from areas exhibiting elevated chromium concentrations. Lead contaminated soil will be segregated and disposed of in the same manner. The Phase II data indicates hydrocarbons are not contaminants of concern in this area and will not be analyzed for in confirmation samples.
|
Bill O'Connell |
| 9/21/2010 |
Site Visit |
Site visit with BPXA and consultant |
Bill O'Connell |
| 11/23/2010 |
Update or Other Action |
Reviewed Corrective Action Plan Addendum #4. Snow will be removed from the chromium impacted area as normal and will not require any special handling. Soil samples from the chromium impacted area will be analyzed for Chromium III and Chromium VI, soil with chrome III below the arctic zone cleanup level will be used as fill. |
Bill O'Connell |
| 5/7/2012 |
Document, Report, or Work plan Review - other |
Reviewed Red Barn Storage Pad Corrective Action Report. Activities conducted at the site from April 2010 to February 2011 included removal and disposal of the Red Barn structure and two trailers, debris removal and disposal, and the removal of the entire gravel pad, including areas impacted by hydrocarbons, lead, and chromium. The former airstrip at the site was removed around 2003. The lead contamination was associated with debris that was removed from the Red Barn Pond and chromium was associated with unused sacks of drilling additives that were found buried in the Red Barn pad. To evaluate the extent of impact from these metals, a grid was placed over the entire area suspected to be impacted and field screening was conducted using x-ray fluorescence (XRF). 30 analytical samples were collected, three of which exceeded the TCLP limit for chromium indicating the material was considered hazardous waste under RCRA. Based on the results of field screening and analytical sampling, the lead and chromium impacted areas were excavated and stockpiled for disposal. A total of 62 cubic yards (cy) of chromium characteristic hazardous waste was containerized and disposed of at a permitted facility. Approximately 175 cy of non hazardous material containing chromium was disposed of at the grind and inject facility and approximately 215 cy of material containing chromium less than 500 mg/kg was used onsite as backfill below tundra grade. The entire gravel pad was removed to tundra grade. Approximately 5,700 cy of clean gravel was excavated and used as backfill at the adjacent Kuparuk State #1 reserve pit. 36,300 cy of clean gravel were excavated and hauled to N Pad, W Pad, or Dead Arm Pit for future reuse. Potentially restricted use gravel with DRO concentrations above 500 mg/kg in Phase II sampling was excavated, placed into 200 cy stockpiles, and sampled to determine reuse. One of the six stockpiles contained DRO above 500 mg/kg and was transported to East Dock Landfarm for treatment along with 3,250 cy of contaminated gravel and tundra from other areas of the pad. The remainder of the stockpiles were transported to Term Well C for use as reserve pit backfill. Confirmation soil samples collected following excavation activities contained DRO up to 1,870 mg/kg. Confirmation sampling at the lead and chromium impacted areas contained lead up to 179 mg/kg and chromium (as chromium III) up to 32,700 mg/kg. Excavated areas were backfilled with gravel to near tundra grade, then topped with 6-12 inches of organic overburden to promote revegetation of the site. Areas where excavation was less than one foot below tundra grade were backfilled with overburden only. Following debris removal, the entire Red Barn Pond was also backfilled with overburden.
|
Bill O'Connell |
| 5/11/2012 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 75030 name: Historic spills/dumping |
Bill O'Connell |
| 5/11/2012 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75030 Historic spills/dumping. |
Bill O'Connell |
| 5/31/2012 |
Cleanup Complete Determination Issued |
The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with BPX Red Barn Storage Pad located in the Greater Prudhoe Bay Area approximately 2.5 miles south of Spine Road near W Pad. 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 this site will be closed. |
Bill O'Connell |
| 9/2/2015 |
Document, Report, or Work plan Review - other |
Date of receipt of letter report entitled Red Barn Pad – Sheen Observation August 2015. ADEC was notified verbally on August 20th of sheen observed at this site. Letter report states that on August 15th Alaska Clean Seas (ACS) returned to the site to further investigate a previously observed sheen. The sheen was determined to be potential petrogenic and a sample collected and submitted to Arctic Fox who then sent it to TestAmerica for TPH analyses which was19 mg/L. ADEC comment letter sent September 3rd. Site will be revisited and sampled in September 2015. |
Keather McLoone |
| 12/15/2015 |
Document, Report, or Work plan Review - other |
Date of receipt of Red Barn Pad - September 2015 Sheen Inspection and Sampling Report. During a mid-August 2015 site visit to the site for restoration activities, a potential hydrocarbon sheen was observed near the western edge of the former pad. ACS returned to the site on August 15th to attempt to gather more information such as an opinion regarding whether the sheen was petrogenic or not and concluded it was petrogenic. They were also to collect a water sample if the sheen was petrogenic but instead placed booms around the pond containing the sheen. ERM returned to the site on September 15th 2015 to conduct a sheen inspection and collect surface water samples for BTEX/PAH. After collecting samples, sediments were disturbed to determine how heavy the sheen "could" get and only one location created a moderate to heavy sheen. TAH/TAqH results did not exceed criteria. The report recommends that additional monitoring occur next summer and ADEC concurs. |
Keather McLoone |
| 8/15/2016 |
Document, Report, or Work plan Review - other |
Reviewed a document submitted by ERM on behalf of BP entitled Work Plan – Greater Prudhoe Bay Contaminated Sites Inspections and Technical Support, and dated August 12, 2016. Activities described in the work plan mainly consist of sheen monitoring. If a sheen is observed, up to two surface water samples will be collected. |
Joshua Barsis |
| 3/8/2017 |
Document, Report, or Work plan Review - other |
Reviewed the Inspection and Technical Support Report, dated February 24, 2017 for the BPX Red Barn Storage Pad site. This site was closed on May 25, 2012; however during a site visit in August of 2015 related to site restoration activities, a hydrocarbon sheen was observed on surface water near the western end of the former pad. This monitoring report describes the continued surface water inspection and sampling activities that were completed in 2016, and also includes a work plan for the 2017 activities.
A visual inspection of the surface water was completed on August 21, 2016. Several sheens were observed during this effort, all of which were determined to be biogenic in nature. Petroleum sheening was observed following shovel sheen testing at several locations along the perimeter of the surface water body. Two surface water samples were collected from the locations with the heaviest sheen (named SW-04 and SW-05). Water samples were submitted for analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX) and polycyclic aromatic hydrocarbons (PAHs) to allow for the calculation of both total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH). None of the sample results exceeded the Alaska Water Quality Standards (AWQS) for TAH or TAqH.
ADEC requested that the 2017 report be submitted by April 1, 2018. |
Joshua Barsis |
| 6/6/2018 |
Document, Report, or Work plan Review - other |
Reviewed the Inspection and Technical Support Report, dated May 8, 2018 for the BPX Red Barn Storage Pad site. This site was closed on May 25, 2012; however during a site visit in August of 2015 related to site restoration activities, a hydrocarbon sheen was observed on surface water near the western end of the former pad. This monitoring report describes the continued surface water inspection and sampling activities that were completed in 2017, and also includes a work plan for the 2018 activities.
A visual inspection of the surface water was completed on August 6, 2017. Petroleum sheening was observed following shovel sheen testing at several locations along the perimeter of the surface water body. Two surface water samples were collected from the locations with the heaviest sheen (named SW-01 and SW-02). Water samples were submitted for analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX) and polycyclic aromatic hydrocarbons (PAHs) to allow for the calculation of both total aromatic hydrocarbons (TAH) and total aqueous hydrocarbons (TAqH). None of the sample results exceeded the Alaska Water Quality Standards (AWQS) for TAH or TAqH. This report is approved.
Proposed 2017 activities include continued visual inspection (before and after shovel sheen testing) and collection of up to two surface water samples, provided that petroleum sheens are observed. Based on the information provided to date, ADEC determined that no further sheen monitoring or analytical testing is required at this time.
|
Joshua Barsis |
