| Action Date |
Action |
Description |
DEC Staff |
| 1/1/1987 |
Interim Removal Action Approved |
(Old R:Base Action Code = SC - Site Control (Emergency Response)). Contaminated area fenced and marked. Exact date of action unknown, but prior to 2/24/87. |
Former Staff |
| 9/1/1987 |
Preliminary Assessment Approved |
New Horizons Construction Co., Inc. conducted an investigation and sampling for Alascom in 1987 (date of action based on date report received) which determined that a PCB spill had occurred at this site. Aroclor 1260 was found in levels ranging from 0 - 59,000 ppm. Extent of contamination and possible migration of contamination needs to be determined. |
Former Staff |
| 9/15/1989 |
Update or Other Action |
(Old R:Base Action Code = FI - Field Inspection (General)). Ecology and Environment identified the likely sources of PCB contamination as four oil-filled heating element wells in the water storage tank. Report states that dispersion should be minimal due to low precipitation, lack of surface water and depth to groundwater. Primary dispersion to be expected through wind-borne dusts and surface run-off. |
Former Staff |
| 12/1/1989 |
Update or Other Action |
(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Ecology and Environment estimate soil contamination at 46 - 800 cubic yards. Recommend that the contaminated site be removed and undergo off site incineration. |
Former Staff |
| 2/27/1991 |
Site Added to Database |
PCB contamination at former military site. |
Former Staff |
| 3/12/1991 |
Site Ranked Using the AHRM |
Initial ranking. |
Former Staff |
| 5/1/1991 |
Update or Other Action |
(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed cleanup plan by Corps of Engineers which proposed removing 50 - 100 cubic yards PCBs. RP proposes establishing onsite lab to monitor for any additonal PCB contaminated soils. Armstrong requested that all PCB contamination be determined at the site and subsequently be removed. |
Ed Armstrong |
| 9/8/1992 |
Update or Other Action |
(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs. |
Jeff Peterson |
| 1/5/1994 |
Update or Other Action |
(Old R:Base Action Code = CORR - Correspondence (General)). Manifests received showing that hazardous wastes had been shipped and received by the disposal facility. |
Bob Couch |
| 1/19/1994 |
Site Ranked Using the AHRM |
Reranked. |
Former Staff |
| 5/21/1996 |
Update or Other Action |
(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Received and commented on Draft Project Management Plan for the Remedial Investigation at Pedro Dome RRS. ADEC Staff had no comment for the ACOE on this document. |
Clint Adler |
| 5/21/1996 |
Update or Other Action |
(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Staff received Draft Project Management Plan (Remedial Investigation) Federal Contract DACA85-94-D-0009 Delivery Order # 0016. |
Clint Adler |
| 6/19/1996 |
Update or Other Action |
(Old R:Base Action Code = FI - Field Inspection (General)). Staff observed Shannon and Wilson's efforts to locate previous excavation extents as indicated by presence of plastic liner. Test Pit locations and historic excavation limits were observed as shown figure 3 of Project Management Plan. |
Clint Adler |
| 6/20/1996 |
Site Characterization Workplan Approved |
(Old R:Base Action Code = MPA - Management Plan Approval). Staff approved Management Plan in an e-mail to Stephen Parker of COE. See computer network files for copy of e-mail. |
Clint Adler |
| 12/6/1999 |
Interim Removal Action Approved |
Interim removal action performed in 1998. PCB soil removal around former water tank. Approximately 400 cubic yards removed. No record of work plan submittal or approval in file. |
Jeff Brownlee |
| 6/19/2000 |
Update or Other Action |
Staff reviewed and commented on an Interim Removal Action Report for removing PCB impacted soils. Approximately 180 cubic yards of PCB impacted soils with concentrations between 15 and 270 mg/kg were removed from an area of two previous PCB removals. The spill was caused from leaking heaters in a fire-suppression water storage tank at this former White Alice Site. The heaters used PCB oil for the heat transfer fluid. Confirmation sampling indicates that cleanup levels were still not achieved at depth or in surface soils and further removal will be needed. |
Jeff Brownlee |
| 3/2/2001 |
Update or Other Action |
File number updated from 100.23.017 to 100.38.106. |
Mitzi Read |
| 4/11/2001 |
Update or Other Action |
Staff reviewed and commented on Pedro Dome, Final Remedial Action Report, PCB Soil Excavation and Treatment. Jeff Brownlee commented on draft and staff made additional comments. Action entered by Sarah Riddle.
(dated December 4, 2000) |
Patrice Buck |
| 7/10/2002 |
GIS Position Updated |
Plotted latitude and longitude coordinates and found them to be acceptable for associated property or address. |
Heather Goldman |
| 9/18/2006 |
Update or Other Action |
A new CS site has been created called "AT&T/Alascom Pedro Dome Repeater site" to handle the remaining non-PCB contamination in the soils. This will be handled under the State and Private Sites Division. |
Deborah Williams |
| 10/30/2006 |
Conditional Closure Approved |
Results of a risk analysis indicated that low levels of PCB contamination do not pose an unacceptable risk to human health or the environment. The risk analysis covered a 1/4 acre area around a former above-ground water storage tank, the associated pump house and a nearby drainage swale. The Corps removed contaminated soil on three separate occasions; the final removal went to bedrock at 8 feet below ground surface. Groundwater and surface water are either not present or present at an undetermined depth (at least 100 feet or more feet bgs). The cumulative cancer risk was 7 X 10E-6 and the Hazard Index with inhalation, ingestion and dermal exposure was 0.78. These numbers are below ADEC's criteria of 10E-5 and 1.0. No soil at this location shall be excavated or moved without notification and approval by ADEC. Other contamination at this site is being addressed be the current property owner, ScottishPower Holdings, Inc. Please refer to th AT&T Alascom Pedro Dome Repeater Site in the CS Database for additional actions at this site. The new file number is 108.38.202 and new RecKey number is 1987310100101. |
Sharon Richmond |
| 10/30/2006 |
Institutional Control Record Established |
Soil around the former above-ground water storage tank, associated pump house and drainage swale (approximately 1/4 acre; see file 100.38.106 for map showing actual location) will not be excavated or removed without notification and approval by ADEC. |
Sharon Richmond |
| 10/30/2006 |
Conditional Closure Approved |
ADEC has determined that No Department of Defense Action is Indicated (NDAI) is required for PCBs at this site. The Corps of Engineers has excavated PCB contaminated soil to bedrock. THe calculated cumulative cancer risk was 7 x 10E-6, which is below the ADEC standard of 1 x 1-E-6. Tha Hazard Index was 0.78, which is below ADEC's standard of 1. Please see file number 108.38.202 for more information. |
Sharon Richmond |
| 3/13/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Sharon Richmond |
