Site Report: ADOT&PF Yakutat Airport Borrow Pit A
|Site Name:||ADOT&PF Yakutat Airport Borrow Pit A|
|Address:||Yakutat Airport, Yakutat, AK 99689|
|Staff:||Jessica Morris, 9072693077 Jessica.Morris@alaska.gov|
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.
Yakutat Airport Borrow Pit A was entered on the Contaminated Sites Database as a PERP Southeast Area Response Team site transfer. When buried drums were encountered, DOT halted any further material extraction and reported the release to DEC. SART approved a DOT Phase I site investigation work plan. The Phase I found that soil contamination included tar, Chevron 325 solvent (mineral oil), gasoline and benzene, toluene, ethylbenzene and total xylenes (BTEX) petroleum compounds. SART approved a Phase II work plan for the environmental consultant to field screen excavated soil for petroleum contamination and segregate contaminated soil between liners in an on-site stockpile. The consultant estimated the volume of the stockpile at 1,125 cubic yards. SART transferred the site to the Contaminated Sites Program (CS) to evaluate groundwater for contamination. CS requested that DOT make arrangements with an environmental consultant to install several groundwater monitoring wells and collect samples for laboratory testing. DEC approved the well installation plan submitted by SBL for DOT requesting samples be analyzed for gasoline (GRO), diesel (DRO) and residual (RRO) range hydrocarbons and BTEX hydrocarbon compounds. One sample was also analyzed for polynuclear aromatic hydrocarbon compounds (PAH).
|Action Date||Action||Description||DEC Staff|
|10/12/2005||Site Added to Database||Petroleum products release to subsurface soil.||Bruce Wanstall|
|10/12/2005||GIS Position Updated||Lat long data was calculated for the site and entered. Metadata include ARCGIS Statewide Locator with satellite photograph used to generate location oriented to North American Datum (NAD) 83. Coordinates projected on USGS 1:24,000 topographic map are saved at ‘n-svrfle’ G:\SPAR\Spar-Contaminated Sites\38 Case Files (Contaminated Sites)\1530 Yakutat\1530.38.015 Yakutat Airport Borrow Pit A.||Bruce Wanstall|
|10/12/2005||Site Ranked Using the AHRM||Direct contact, groundwater ingestion, surface water ingestion, wild foods ingestion, and inhalation of outdoor air/ fugitive dust Exposure Pathways are complete for the drum site and the contaminated soil stockpile.||Bruce Wanstall|
|10/13/2005||Spill Transferred from Prevention Preparedness and Response Program||Case transfer; spill number not known at this time.||Bruce Wanstall|
|10/13/2005||Update or Other Action||Monitoring well installation, sampling and analysis workplan reviewed; approval letter sent.||Bruce Wanstall|
|11/7/2005||Update or Other Action||ledger code assigned||Bruce Wanstall|
|12/12/2005||Site Characterization Report Approved||2005 Monitoring Well Sampling Report recieved; lab report reviewed and approved; water samples from one of two wells exceeded applicable Table C groundwater cleanup levels for residual range hydrocarbons. 2-methylnaphthalene and naphthalene (PAHs) were detected in the parts per billion range; diesel range hydrocarbons were detected below cleanup levels.||Bruce Wanstall|
|9/26/2007||Exposure Tracking Model Ranking||Controlling pathway is groundwater ingestion. The 2004 removal action by ADOT was monitored by ADEC project management and is thought to have brought any off-site migration of residual contamination under control. Monitoring wells are in-place and sampling has indicated that residual contamination is currently stable and unlikely to migrate to anadromous surface water streams or drinking water wells some distance away; periodic future monitoring is recommended. Soil cleanup has recovered the drum sources and associated contaminated material is stored in a secure area on airport property in a covered and lined stockpile.||Bruce Wanstall|
|4/1/2012||Exposure Tracking Model Ranking||A new updated ranking with ETM has been completed for source area 74961 drums.||Bruce Wanstall|
|6/30/2015||Update or Other Action||NAD 83 location coordinates updated by PM using CS Web Map, site figure in the file, and personal knowledge of the site and area. Additional groundwater monitoring may be warranted.||Bruce Wanstall|
|9/27/2017||Meeting or Teleconference Held||A teleconference with ADEC and ADOT&PF was held to gain familiarity with the site. ADOT&PF is working to gather information and provide site files to ADEC.||Jessica Morris|
There are no documents for this site report.