| Action Date |
Action |
Description |
DEC Staff |
| 6/4/1991 |
Site Added to Database |
Diesel contaminant. |
Former Staff |
| 5/14/1996 |
Site Ranked Using the AHRM |
Initial ranking, by Shannon and Wilson. |
S&W |
| 5/24/2004 |
Update or Other Action |
File number assigned and entered into the Fileroom DB and CS DB. |
Alyce Hughey |
| 7/26/2005 |
GIS Position Updated |
Using Figure 1 from a Site Investigation Report BRU 221-23 Former North Stockpile Site, Beluga River Field, from ARCO, dated June 10, 1994, in conjunction with TopoZone Pro, entered the coordinates for this site. Metadata include No Topo Basemap, TopoZone Pro Street Map, Black and White Aerial Photo, on a Medium Size Map, View Scale 1:10,000, Coordinate Datum NAD83. High degree of confidence in accuracy of location. |
Alyce Hughey |
| 2/6/2006 |
Update or Other Action |
File name changed from ARCO Drill Site Beluga River 221-23 to Beluga River 221-23 on 2-6-06 per Don Fritz. |
Alyce Hughey |
| 6/24/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Don Fritz |
| 2/4/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 71635 name: Beluga River 221-23 |
Bianca Reece |
| 11/16/2011 |
Update or Other Action |
Site transferred from Don Fritz to Peter Campbell per Paul Horwath. |
Alyce Hughey |
| 5/6/2013 |
Update or Other Action |
Based on ADEC review of the file, DRO soil and groundwater contamination remains at the site in the area of the former north stockpile and within the east side of the pad. The extent of contamination has not been determined for this site. ADEC sent a letter requested further environmental site characterization work be conducted at this site. Once the extent of contamination has been determined, ADEC will evaluate if the site meets current ADEC site closure requirements. |
Peter Campbell |
| 3/20/2019 |
Workplan Requested |
Based on ADEC review of the file, DRO soil and groundwater contamination remains at the site in the area of the former north stockpile and the east side of the pad. The extent of contamination has not been determined. ADEC sent a letter (May 6, 2013) requesting further environmental site characterization work be conducted. Once the extent of contamination has been determined, ADEC will evaluate if the site meets current ADEC site closure requirements.
The goal of the assessment should be to determine if contaminates are expanding into the wetlands.
|
Peter Campbell |
| 4/20/2021 |
Workplan Requested |
Reiterate requirement for work plan from 2019. |
Peter Campbell |
| 4/21/2021 |
Workplan Requested |
In 1991 Diesel seepage was noted at the edge of a gravel pad. Amount of contamination is unknown. Based on ADEC review of the file, DRO soil and groundwater contamination remains at the site in the area of the former north stockpile and the east side of the pad. The extent of contamination has not been determined. ADEC sent a letter (May 6, 2013) requesting further environmental site characterization work be conducted. Once the extent of contamination has been determined, ADEC will evaluate if the site meets current ADEC site closure requirements.
|
Peter Campbell |
| 1/25/2022 |
Document, Report, or Work plan Review - other |
The 2021
Interim Groundwater Monitoring Report recommends closing the site and opening a new project to address subsurface soil and groundwater contamination. ADEC will not close the project site but will update the project scope so that the history of the site can be managed as a continuation of the project in our file system. Require that Hilcorp prepare a work plan to conduct a Phase I and Phase II assessment of the site to determine the horizontal and vertical extent of soil and groundwater and surface water contamination, both on and off pad. |
Peter Campbell |
| 6/23/2022 |
Document, Report, or Work plan Review - other |
Present a cover letter in the work plan that identifies the name and address of qualified environmental professional who prepared the work plan.
Name and address of person who the work plan is prepared for at Hilcorp.
Where is the reserve pit on Figure A3? It is referenced in the text on page 6 in the work plan.
Identify who is responsible for identifying and managing impacted soils prior to the QEP arriving on site?
The Field Sampling Guidance document has been updated to 2022. Please update your references and review the new guidance document.
Section 3.0. PID screening is not an option for determining if soils are clean. A PID may be used to segregate soils, but only laboratory testing is a valid method to determine the fate of soils. Using an arbitrary number of 20ppmV as a cut off is not valid. See ADEC Field Sampling Guidance 2022. Soils exhibiting odor, field screening detections, staining or other indicators of contamination will be subject to laboratory testing.
Page 7, 1st paragraph. The Field Sampling Guidance document states “the work plan will identify the collection sampling and frequency of sample.” Please include in these factors in this work plan.
|
Peter Campbell |
| 8/3/2023 |
Workplan Requested |
Request a work plan for the assessment of impacted soils not associated with a known source, identified during the course of the Stockpile assessment. |
Peter Campbell |
| 8/22/2023 |
Meeting or Teleconference Held |
Four soil borings are to advanced to groundwater. One soil boring be moved closer to the well head.
The objective is to determine the source of potential subsurface impact.
Soil samples collected from each boring: one from 0-2 ft bgs, and one from the smear zone (approximately 5 ft bgs), or from the location with the highest PID reading.
If staining, olfactory evidence, or PID readings indicate potential contamination in the subsurface, a grab groundwater sample will be collected using Geoprobe Screen Point 16 (SP-16) groundwater sampler.
Recommended that the borings be moved from the former stockpile location to assess the well head. |
Peter Campbell |
| 8/30/2023 |
Document, Report, or Work plan Review - other |
2022 Groundwater Monitoring Report Approval |
Peter Campbell |
| 9/13/2023 |
Site Characterization Workplan Approved |
Work plan review. Determine the source and the vertical and horizontal extent of soil and groundwater contamination focusing on the well head area. Install four soil borings and collect grab groundwater samples if field observations identify contamination in subsurface soil.
|
Peter Campbell |
