Site Report: Former Eastwind Construction Yard

Site Name:	Former Eastwind Construction Yard
Address:	151 West 100th Ave (formerly 101 East 100th Ave), Anchorage, AK 99515
File Number:	2100.26.220
Hazard ID:	24032
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	61.131898
Longitude:	-149.882417
Horizontal Datum:	WGS84

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.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

Diesel fuel contamination was identified in soil and groundwater associated with a diesel underground storage tank system (UST) that was removed in 1989. During the UST removal an estimated 7,000 gallons of diesel fuel and contaminated water were pumped from the tank into a nearby drainage ditch which flowed into a wetland located to the west of the UST property. The highest concentrations of contaminants in soil were located off-property at one of the dams constructed during the spill response containment (Dam #3). During the spill response about 20 gallons of diesel fuel was recovered. In 1990, the current property owner Eastwind entered into a Compliance Order By Consent (COBC) with the DEC for the release investigation, cleanup, and monitoring of the diesel fuel contamination at this site. Later in 1990, 127 tons of contaminated soil was excavated from the drainage ditch and transported off property for treatment and disposal. In 1993, three groundwater monitoring wells were installed and sampled. The monitoring wells had up to 15 milligrams per liter (mg/l) DRO. Groundwater monitoring continued until 1999, in 1999 there was up to 3.47 mg/l DRO in the groundwater with depth to groundwater 11 to 15 feet below ground surface. In 1994, 1995, and 1996 additional contaminated soil was excavated from the Dam #3 area and transported off-property for thermal treatment. Up to 5,100 mg/kg DRO was left after the excavation work in 1996. In 2012 eleven soil borings and three replacement monitoring wells were installed and sampled. The groundwater in these monitoring wells had up to 0.575 mg/l DRO. The samples from the soil borings had up to 1,900 mg/kg DRO and 0.0315 mg/kg benzene. Later in 2012, 7,629 tons of contaminated soil was excavated from the former UST area and transported off property for thermal treatment. During the excavation work, about 13,000 gallons of contaminated water with up to 8.9 mg/l DRO was pumped from the excavation for disposal in the sanitary sewer system in accordance with a discharge permit. After the removal of the contaminated soil and groundwater, samples from the monitoring wells did not contain detectable concentrations of DRO, GRO, or benzene and confirmation soil samples collected from the excavation did not contain contaminants above the most stringent migration to groundwater cleanup levels. In 2013, a review of the as-built drawing from the C Street extension project indicated the Dam #3 area was now under the paved roadway. Later in 2013 the monitoring wells were decommissioned in accordance with an approved plan. F.K.A. L55.59. Another area of soil and groundwater contamination exists at the property. See file number 2100.38.539.

Action Information

Action Date	Action	Description	DEC Staff
10/24/1989	Underground Storage Tank Site Characterization or Assessment	Reviewed a phase 1 site assessment report for UST removal.	Former Staff
11/3/1989	Leaking Underground Storage Tank Release Confirmed - Petroleum	LUST Site created in CSP for source area ID 77611 Diesel fuel discharged into drainage ditch and soil and groundwater contamination found associated with UST.	Former Staff
11/3/1989	Site Added to Database		Former Staff
11/3/1989	Leaking Underground Storage Tank Emergency Response	By 11/14/89 Eastwind Construction recovered about 20 gallons of an estimated 7,000 gallon spill. Berms used to help contain fuel movement.	Former Staff
11/3/1989	Site Visit	During site visit during tank removal, Scott Home, ADEC staff, discovered an enormous amount of diesel fuel draining into a ditch from the site's tank area.	Former Staff
11/4/1989	Leaking Underground Storage Tank Cleanup Initiated - Petroleum		Former Staff
11/7/1989	Release Investigation	Diesel contamination from Eastwind tank verified from wetland samples.	Former Staff
12/13/1989	Leaking Underground Storage Tank Corrective Action Underway	Initial corrective action plan was found to be unacceptable by ADEC. A revised plan was approved on 1/29/90.	Former Staff
12/14/1989	Document, Report, or Work plan Review - other	Results of samples collected during underground storage tank excavation obtained. Results indicated that additional soil and possibly groundwater remediation needed.	Former Staff
1/24/1990	Document, Report, or Work plan Review - other	Remedial action plan originally submitted on 12/13/89 was revised and accepted.	Former Staff
4/26/1990	Update or Other Action	A Compliance Order by Consent (COBC) is signed for this site for the cleanup and investigation of the contamination at this property. The COBC states that its terms are binding on any future lessees or owners of the property. If the COBC is violated the DEC can require a bond to be posted payable to the State of Alaska to complete remediation of the contamination.	Robert Weimer
7/2/1990	Document, Report, or Work plan Review - other	Contaminated soil disposal plan for UST site No. 1. Disposal of stockpile No. 1 with Alaska Pollution Control. Stockpile #2 at the Anchorage Regional Landfill. ADEC approves of plan in writing on 7/12/90.	Former Staff
8/6/1990	Update or Other Action	Alaska Pollution Control processed 41 tons of contaminated soil from UST Site No. 1 area. The Anchorage Regional Landfill also received 86 tons of contaminated soil from UST Site No. 1 area.	Former Staff
8/9/1990	Document, Report, or Work plan Review - other	Monitoring well location and sampling plan for UST Site No. 2. ADEC conditionally approves plan.	Former Staff
11/23/1990	Update or Other Action	Anchorage Sand & Gravel (AS&G) treated 854 tons of contaminated soil from the UST Site No. 2 area.	Former Staff
1/25/1991	Update or Other Action	VECO purchases "old" Eastwind and this property. VECO forms "new" Eastwind to purchase "old" Eastwind's personal property and name.	Robert Weimer
5/25/1993	Update or Other Action	Plan submitted to excavate contaminated soils, take confirmatory samples, and assess groundwater for contamination at the discharge point	Former Staff
10/1/1993	Document, Report, or Work plan Review - other	1993 Groundwater monitoring event of the one monitoring well. 15 mg/l DRO in the groundwater.	Robert Weimer
3/31/1994	Update or Other Action	Corrective action plan to excavate contaminated soils at several locations and have it thermally treated at CleanSoils.	Former Staff
3/31/1994	Document, Report, or Work plan Review - other	Some contaminated soil at dam # 3 was excavated and has been transported to Clean Soils for thermal treatment. Additional contamination remains at dam # 3 and other locations at the site.	Former Staff
10/1/1994	Document, Report, or Work plan Review - other	1994 Groundwater monitoring event. Up to 5.1 mg/l DRO in the groundwater. Two additional monitoring wells were installed in 1994. At total of 3 monitoring wells are at the site. These 3 monitoring wells are located to the northwest and west of the building.	Robert Weimer
11/15/1994	Document, Report, or Work plan Review - other	Some on-property and off-property (to the west) sampling was conducted. Contamination remains both on and off property.	Former Staff
9/26/1995	Update or Other Action	Reviewed a corrective action workplan to attempt to excavate out the remaining soil contamination.	Former Staff
1/3/1996	Document, Report, or Work plan Review - other	January 3, 1996 groundwater monitoring event. Up to 19 mg/l DRO in the groundwater. Depth to groundwater was between 10 and 12 feet below ground surface.	Robert Weimer
4/4/1996	Update or Other Action	"New" Eastwind merges with Norcon Inc. and is now a division of Norcon Inc. Norcon Inc. is now an RP for the contamination at this site.	Robert Weimer
4/10/1996	Document, Report, or Work plan Review - other	Reviewed a release investigation report. This release investigation identified contamination remaining near former tank area and off property in wetland area.	Former Staff
4/19/1996	Document, Report, or Work plan Review - other	April 19, 1996 groundwater monitoring event. Up to 12 mg/l DRO in the groundwater. Depth to groundwater was 12 to 14 feet below ground surface.	Robert Weimer
5/6/1996	Site Characterization Report Approved	November 5, 1995 assessment at the Dam#3 location located off property to the west of the Eastwind/Veco property. A total of 44.6 tons of contaminated soil was excavated at 3 locations and thermally treated. Up to 490 mg/kg DRO was left in the three excavation areas. The samples were only analyzed for DRO. Contamination was left above cleanup levels in 7 locations sampled including base and sidewall samples. In addition 4 cubic yards of contaminated soil was excavated and thermally treated at the hydraulic spill area near the on property building. Confirmation samples taken from the hydraulic spill excavation met site cleanup levels for DRO.	Robert Weimer
8/5/1996	Update or Other Action	Department of Law issues a letter to Norcon/VECO not to fill in a ditch until ADEC has had a chance to review the information submitted on August 1, 1996.	Robert Weimer
8/6/1996	Update or Other Action	Meeting between ADEC, Department of Law, and VECO/Norcon regarding the site. A meeting follow up letter was sent be Department of Law on August 13, 1996. VECO/Norcon is requested not to grade over contaminated area, to conduct further investigation in that area, to assess the west berm area for contamination, to submit a report on site sampling, and to submit a plan for completion of the investigation and cleanup of the site.	Robert Weimer
8/8/1996	Document, Report, or Work plan Review - other	August 8, 1996 groundwater monitoring event. Up to 2.9 mg/l DRO in the groundwater. Depth to groundwater was 7 to 10 feet below ground surface.	Robert Weimer
10/15/1996	Document, Report, or Work plan Review - other	October 15, 1996 groundwater monitoring event. Up to 2.4 mg/l DRO in the groundwater. Depth to groundwater was 6 to 9 feet below ground surface.	Robert Weimer
11/19/1996	Update or Other Action	ADEC approves reducing groundwater monitoring to annually for monitoring wells MW-2 and MW-3, and quarterly for MW-1.	Robert Weimer
11/26/1996	Site Characterization Report Approved	September 10, 1996 assessment at the Dam#3 location located off property to the west of the Eastwind/Veco property. A total of 8.18 tons of contaminated soil was excavated at 3 locations and thermally treated. Up to 5,100 mg/kg DRO was left in the three excavation areas. The samples were only analyzed for DRO. Contamination was left above cleanup levels in 7 of the 10 locations sampled including base and sidewall samples. Groundwater was encountered at 3 feet below ground surface.	Robert Weimer
12/4/1996	Update or Other Action	ADEC letter to VECO/Norcon requesting corrective action plan for the site.	Robert Weimer
5/6/1997	Document, Report, or Work plan Review - other	May 6, 1997 groundwater monitoring event. Up to 6.1 mg/l DRO in the groundwater. Depth to groundwater was 8 to 12 feet below ground surface.	Robert Weimer
7/28/1997	Document, Report, or Work plan Review - other	July 28, 1997 groundwater monitoring event. Up to 3.1 mg/l DRO in the groundwater. Depth to groundwater was 6 to 9 feet below ground surface.	Robert Weimer
11/20/1997	Update or Other Action	ADEC sends Notification of Intent to Cost Recover Letter to EASTWIND, INC.	Former Staff
12/9/1997	Update or Other Action	Returned letter from Eastwind PO Box 11-1990 in Anchorage. Sent to 6400 Rowenna Street in Anchorage. New address is attn: Tom McKee, veco/Eastwind P.O. Box 190947 Anchorage AK 99519.	Former Staff
1/23/1998	Update or Other Action	ADEC sends Notification to Cost Recovery letter to the current owner Veco/Eastwind.	Robert Weimer
5/1/1998	Document, Report, or Work plan Review - other	May 1, 1998 Groundwater monitoring event. Up to 5.9 mg/l DRO in the groundwater. Depth to groundwater was 6 to 11 feet below ground surface.	Robert Weimer
7/29/1998	Document, Report, or Work plan Review - other	July 29, 1998 Groundwater monitoring event. Up to 3.4 mg/l DRO in the groundwater. Depth to groundwater was 5 to 8 feet below ground surface.	Robert Weimer
8/25/1998	Update or Other Action	ADEC letter requesting corrective action plan to be submitted by 9/16/98.	Robert Weimer
4/12/1999	Update or Other Action	ADEC letter again requesting corrective action plan (to be submitted by 5/12/99).	Robert Weimer
4/30/1999	Document, Report, or Work plan Review - other	April 30, 1999 Groundwater monitoring event. Up to 3.47 mg/l DRO in the groundwater. Depth to groundwater was 11 to 15 feet below ground surface.	Robert Weimer
12/1/1999	Update or Other Action	ADEC sends Warning Letter to VECO for failure to provide corrective action plan. ADEC requests corrective action plan and site status update by 2/1/00. The warning letter notes that there is evidence that since VECO purchased the property there have been releases of petroleum from the site to the adjacent property to the west (Marten's), the on going release was confirmed by VECO's consultant (DOWL) in their 1996 report.	Daniel Rogers
9/9/2002	Update or Other Action	ADEC letter requesting the submittal, by October 9, 2002, of a corrective action plan and for groundwater monitoring (of all three monitoring wells for BTEX, GRO, and DRO) at the site.	Robert Weimer
4/19/2005	Site Characterization Report Approved	Groundwater sampling on the adjacent property located to the south (10300 King Street) found 2.24 mg/L DRO in the groundwater. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.	Robert Weimer
9/22/2005	Update or Other Action	Groundwater sampling on the adjacent property located to the south (10300 King Street) found 2.86 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. Depth to groundwater was 5.44 to 7.54 feet below ground surface. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.	Robert Weimer
12/7/2005	Site Characterization Report Approved	Groundwater sampling on the adjacent property located to the south (10300 King Street) found 3.16 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.	Robert Weimer
4/4/2006	Update or Other Action	ADEC letter requesting groundwater monitoring for BTEX, GRO, and DRO by 5/15/06, and release investigation workplan to define the extent of the groundwater contamination and soil contamination at Dam #3 by 6/1/06.	Robert Weimer
5/22/2006	Update or Other Action	Letter from RP's attorney alleges that NORCON property to the south (10300 King Street, file number 2100.38.463) was impacted in the past from a property to the east owned by Alaska Petroleum Co. and not from the 101 East 100th street site.	Robert Weimer
12/18/2006	Update or Other Action	Reviewed ADEC and CORPS files and could find no documentation of contamination coming from the Alaska Petroleum Co. site or any other site in the area on to the 101 East 100th site or the NORCON site to the south.	Robert Weimer
12/19/2006	Update or Other Action	Talked with the Municipality of Anchorage staff and they could find no documentation of contamination coming from the Alaska Petroleum Co. site or any other site in the area on to the 101 East 100th site or the NORCON site to the south. Based on available data it appears that the NORCON property is being impacted by the 101 East 100th site.	Robert Weimer
12/20/2006	Site Characterization Report Approved	Groundwater sampling on the adjacent property located to the south (10300 King Street) found 4.0 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.	Robert Weimer
2/7/2007	Exposure Tracking Model Ranking	Site ranked on the new Exposure Tracking Model (ETM). The ETM is a new site ranking system that looks at, based on available data, the potential exposure pathways for the contamination remaining at the site.	Robert Weimer
9/20/2007	Update or Other Action	Based on Deed records this property was purched by AEL Anchorage LLC (Terry Draegar, ESQ.) on this date. As purchaser they are bound by the terms of the existing COBC. AEL Anchorage LLC also owns the east site of the property that is another contaminated site. See file number 2100.38.435.	Robert Weimer
11/2/2007	Site Characterization Report Approved	Groundwater sampling on the adjacent property located to the south (10300 King Street) found 3.85 mg/L DRO, 1.06 mg/l RRO, <0.5 ug/l benzene, and <0.05 mg/l GRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.	Robert Weimer
10/28/2011	Update or Other Action	To date ADEC has not received the requested groundwater monitoring for BTEX, GRO, and DRO of the site monitoring wells, and the release investigation workplan to define the extent of the groundwater contamination and soil contamination at Dam #3. The Dam #3 area may have been effected by utility and/or road work associated with the extension of C Street.	Robert Weimer
12/9/2011	Meeting or Teleconference Held	Meeting with property owners representative and their consultant to discuss the site history, the contaminated sites in the area, and site work to be conducted. The consultant will contact DOWL to survey in the locations of dam #3 including vertical and information whether/how much the area was excavated/filled during the road work, and survey the location of the site monitoring wells. He will assess the condition of the monitoring wells. He will then provide a report of the results and provide a work plan for conducting confirmation sampling at dam#3 and the sampling of the groundwater. The owner representative will also contact Target about Target sampling the monitoring wells on the Target store property. The owners representative said that when Target purchased the store property Target agreed to be responsible for all contamination on the Target property.	Robert Weimer
1/27/2012	Update or Other Action	Talked with RPs consultant. He will submit the results of his research and work plan for the requested site work.	Robert Weimer
3/9/2012	Document, Report, or Work plan Review - other	ADEC reviewed the February 2012 "Sampling and Analysis Work Plan for Property Located at 101 East 100th Avenue" submitted by TELLUS, Ltd. on behalf of AEL Anchorage LLC. The work plan proposes to collect soil and groundwater samples to help assess for remaining contamination for the above referenced site. The work plan as proposed in not approved. The Department requests that AEL Anchorage LLC submit a revised work plan by March 31, 2012 that includes the following modifications: 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells are to remain for future sampling. 3. For the replacement monitoring well area at each boring location analytical soil samples need to be collected at the soil/water interface and the other depth most likely to be contaminated based on field readings and observations. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample most likely to have the highest contamination based on field readings and observations of all of the 3 monitoring well area borings is to be also be analyzed for PAHs, including a field duplicate for BTEX, GRO, DRO, and PAHs. 4. Each of the replacement monitoring well area borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater sample from the monitoring well in this area most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs, including a field duplicate for PAHs, BTEX, GRO, and DRO. All of the monitoring wells are to remain for future sampling. 5. No silica gel cleanup is to be conducted on any samples prior to analysis. 6. The three damaged existing monitoring wells will need to be properly decommissioned in accordance with current ADEC guidance. 7. The purge/development water is not approved for disposal on-site. All drill cuttings and purge/development water will need to be properly containerized for treatment and disposal under a separate request. 8. The final report will need to include complete copies of all field notes. 9. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 10. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.	Robert Weimer
4/9/2012	Document, Report, or Work plan Review - other	ADEC reviewed the March 2012 "Sampling and Analysis Work Plan for Property Located at 101 East 100th Avenue" submitted by TELLUS, Ltd. on behalf of AEL Anchorage LLC. The work plan proposes to collect soil and groundwater samples to help assess for remaining contamination for the above referenced site. The work plan is conditionally approved: 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells are to remain for future sampling. 3. The replacement monitoring wells need to remain for future sampling. 4. The three damaged existing monitoring wells will need to be properly decommissioned in accordance with current ADEC guidance. 5. The final report will need to include complete copies of all field notes. 6. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 7. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.	Robert Weimer
4/17/2012	Site Visit	Morning site visit to observe the soil sampling and installation of the first replacement monitoring well. Discuss problems with the volatile sampling procedures in the first soil boring with the consultant. Surveyor was on site to mark the location of Dam #3 in the C Street right-of-way. Elevated field readings and fuel odor in soils at the 12-15' interval.	Robert Weimer
4/18/2012	Site Visit	Afternoon site visit to observe monitoring well development. Discuss volatile sampling procedures with the consultant. Discussed with consultant his field observations and soil sampling from the three soil borings sampled. They did rush analysis on the soil samples from the first soil boring and expect the results by Friday. They plan to submit a work plan for drilling and sampling additional soil borings to help define the extent of the contamination identified in the first soil boring.	Robert Weimer
4/18/2012	Document, Report, or Work plan Review - other	Between April 17, 2012 and April 18, 2012 three replacement monitoring wells were installed and soil samples were collected. Up to 848 mg/kg DRO, 138 mg/kg GRO, some detectable PAHs below cleanup levels, and <0.0125 mg/l benzene in the soil samples collected. As discussed with the consultant during the site visit there were problems observed with the volatile sampling procedures in the first soil boring (MWA) that will bias low the sampling results.	Robert Weimer
4/20/2012	Document, Report, or Work plan Review - other	April 20, 2012 groundwater monitoring event. The three replacement monitoring wells (MWA, MWB, and MWC) were sampled for DRO, GRO, PAH (1 monitoring well) and BTEX. Up to 0.575 mg/l DRO, <0.05 mg/l GRO, <0.5 ug/l benzene, and 0.248 ug/l naphthalene. Groundwater flow direction was to the west. Depth to groundwater was about 1 to 7 feet below ground surface.	Robert Weimer
4/24/2012	Document, Report, or Work plan Review - other	Between April 23, 2012 and April 24, 2012 eleven soil borings were sampled at the site to help define the extent of the contamination at the site. Up to 1,900 mg/kg DRO, 172 mg/kg GRO, and 0.0315 mg/kg benzene in the soil samples collected.	Robert Weimer
5/30/2012	Site Characterization Workplan Approved	DEC review of May 2012 Remedial Action Work Plan for the property located at 101 East 100th Avenue, Anchorage, Alaska. Within this plan, you proposed to excavate contaminated soil from the source area excluding overburdened soil from 0 to 5 feet below ground surface. The excavation area is anticipated to be triangular shaped and is estimated to measure 75 feet by 75 feet by 55 feet. Once hydrocarbon soil is re-encountered with the source area, the excavated impacted material will be loaded directly into side dump trailers and trucked to Alaska Soil Recycling for thermal treatment. Discrete soil sampling procedures will be implemented within the excavation pit and sidewalls to assess whether all contaminated soil has been removed. Collected soil samples slated for laboratory analysis will be analyzed for GRO, DRO, and BTEX. Groundwater monitoring well MW A will be decommissioned and replaced with monitoring well MW A1. All three existing wells will be re-sampled following the well replacement to be analyzed for GRO, DRO, and BTEX. Also requested approval to dispose of investigative derived waste (soil and groundwater). Clean soil and groundwater will be disposed of on-site while contaminated soil drill cuttings will be incorporated into excavated contaminated soil slated to be thermally treated at ASR. The subject work plan is approved under the following conditions: 1. Tellus, Ltd, will adhere to our Laboratory Data and Quality Assurance Policy (Tech Memo 06-002) when collecting and evaluating laboratory analytical data. We posted a technical memorandum on environmental laboratory analytical data requirements at http://www.dec.state.ak.us/spar/csp/guidance/tm_lab_qa.pdf and laboratory data review checklist at http://www.dec.state.ak.us/spar/csp/guidance/lab_checklist.pdf. Please note that the laboratory data review checklist must be completed for every laboratory analytical data deliverable received. Laboratory data deliverables that are missing the chain of custodies and/or sample receipt forms are insufficient to complete the laboratory data review checklist. 2. Tellus, Ltd, will adhere to our November 2011 Monitoring Well Guidance, November 2002 Underground Storage Tank Procedures Guidance and our May 2010 Draft Field Sampling Guidance when conducing site characterization and cleanup. We posted these Guidance’s at http://dec.alaska.gov/spar/guidance.htm#csp. 3. All drill cuttings collected to date will be assumed to be contaminated due to questions regarding the quality/integrity of the soil GRO and BTEX data. These cutting will be incorporated into soil scheduled to be thermally treated at Alaska Soil Recycling. 4. Tellus, Ltd will analyze at least one soil and one groundwater sample for PAHs in accordance with DEC approved methods.	Robert Weimer
6/12/2012	Document, Report, or Work plan Review - other	Preliminary water sample results from the groundwater pumped from the soil excavation into holding tanks. Up to 8.90 mg/l DRO, 0.517 mg/l GRO, 2.96 ug/l toluene, 25.1 ug/l ethylbenzene, and 44.4 ug/l xylenes. They are looking at getting a dicharge permit from AWWU to discharge the contaminated water into the sanitary sewer. About 13,000 gallons of contaminated water have been pumped into the holding tanks to date.	Robert Weimer
7/12/2012	Update or Other Action	On July 12, 2012 a replacement monitoring well MWAA was installed to replace monitoring well MWA that was removed during the excavation conducted at the site in June/July 2012.	Robert Weimer
8/10/2012	Document, Report, or Work plan Review - other	DEC reviewed the site release investigation information provided to date emailed RP's attorney and they are still missing items 1, 2, 5, and 7 (determining groundwater gradient for each monitoring event) in the April 9, 2012 conditional approval letter (see attached and copied below). The information in item 7 is very important in evaluating whether seasonally the existing 3 monitoring wells are adequate to characterize the groundwater contamination at the site. 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The proposed supplemental work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. The supplemental work plan for the Dam #3 location is to be submitted no later than May 1, 2012. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of these monitoring wells are to remain for future sampling. 5. The final report will need to include complete copies of all field notes. 7. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.	Robert Weimer
9/7/2012	Document, Report, or Work plan Review - other	July 28, 2012 groundwater monitoring event. The three replacement monitoring wells (MWAA - replacement well for monitoring well MWA, MWB, and MWC) were sampled for DRO, GRO, and BTEX. Up to <0.391 mg/l DRO, <0.05 mg/l GRO, and <0.5 ug/l benzene. Groundwater flow direction was to the southwest. Depth to groundwater was about 2 to 4 feet below ground surface. Due to the size of the contaminated soil excavation and the variability in groundwater flow direction, the three existing site monitoring wells are not adequate to assess for groundwater contamination at this site. Additional monitoring wells and additional groundwater monitoring events are needed to assess the nature and extent of the groundwater contamination at this site.	Robert Weimer
9/7/2012	Document, Report, or Work plan Review - other	July 2012 Remedial Action Report. Between June 8, 2012 and June 30, 2012 7,629.79 tons of contaminated soil was excavated and hauled off-site for thermal treatment at ASR. The excavation was approximately 14,000 square feet at the surface as of July 2, 2012. The depth of the excavation ranged between 13 feet and 25 feet below ground surface. Approximately 3 feet of clean overburden soil was removed and reused as backfill. Up to 745 mg/kg DRO in the samples collected from the base of the excavation, and up to 2,960 mg/kg DRO in the samples collected from the excavation sidewalls. Additional soil was removed from those areas. 61 analytical samples were collected from the base of the excavation and 51 analytical samples were collected from the sidewalls. One additional analytical sample was collected from each of the 4 locations (2 base and 2 sidewall) that had soil above cleanup levels. Excavation base sampling was not done in accordance with the conditionally approved plan. For an excavation of 14,000 square feet at least 148 field screening locations are required but only 60 were collected. In addition for the two excavation base locations where additional soil was excavated those areas did not have the required base/sidewall field screening and analytical sampling to assess the area excavated. Only one field screening and one analytical sample was collected. The eastern portion (approximately 5,200 square feet) of the excavation base required at least 52 field screening and 21 analytical samples, but had only 13 field screening and 13 analytical samples collected. Sidewall sampling was not done in accordance with the conditionally approved plan. Field screening was not conducted every 10 linear feet of sidewall and not done at multiple depths/areas of most likely contamination. The height of the sidewalls ranged between 13 and 25 feet and no field screening conducted at the soil water interface. Field screening samples were only collected at the depth sampled. There were not analytical samples collected for each 20 foot section of sidewall as required. In addition for the two sidewall locations where additional soil was excavated those areas did not have the required field screening sidewall and analytical sampling to assess the areas excavated. Only one field screening and one analytical sample was collected.	Robert Weimer
9/11/2012	Update or Other Action	DEC letter to AEL Anchorage LLC noting that the site work done in June/July 2012 was not done in accordance with the conditionally approved work plan. Due to the size of the contaminated soil excavation and the variability in groundwater flow direction during the April 2012 and July 2012 groundwater monitoring events, the three existing site monitoring wells are not adequate to assess for groundwater contamination at this site. Additional monitoring wells and additional groundwater monitoring events are needed to assess the nature and extent of the groundwater contamination at this site. The Department requests that AEL Anchorage LLC submit a work plan by October 1, 2012 that includes the following: 1. As requested previously, the Dam #3 location needs to be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers in 1989 and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples need to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings need to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells need to remain for future sampling. 3. For the on property excavation area base and sidewalls, supplemental analytical soil samples need to be collected to complete the assessment of that area in accordance with the conditionally approved remedial action plan. Each of analytical samples need to be analyzed for BTEX, GRO, and DRO, with at least 10 percent of soil samples most likely to have the highest contamination based on field readings and observations to be also be analyzed for PAHs, including 10 percent field duplicates for BTEX, GRO, DRO, and PAHs. 4. Additional monitoring wells need to be installed around the perimeter and in the down gradient directions of the on property excavation. These monitoring wells and the existing monitoring wells need to have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater sample from the monitoring well in this area most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs, including a field duplicate for PAHs, BTEX, GRO, and DRO. All of the monitoring wells need to remain for future sampling. 5. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 6. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements. The Department also requests that AEL Anchorage LLC submit by October 1, 2012 documentation for the treatment and disposal of the contaminated water that was removed from the excavation.	Robert Weimer
9/12/2012	Meeting or Teleconference Held	Meeting with owners representative to discuss the DEC September 11, 2012 letter regarding the site work done in June/July 2012 and the additional site work needed to evaluated the site for closure. Follow up meeting scheduled for September 13, 2012 with the consultant so they can prepare a work plan to conduct requestded site work in the DEC September 11, 2012 letter.	Robert Weimer
9/13/2012	Meeting or Teleconference Held	Meeting with owners representative and the consultant to discuss the DEC September 11, 2012 letter regarding the site work done in June/July 2012 and the additional site work needed to evaluated the site for closure. The consultant will prepare a work plan to conduct requestded site work in the DEC September 11, 2012 letter. The consultant will also double check the location of the dam #3 with the old and current air photos.	Robert Weimer
9/20/2012	Site Characterization Workplan Approved	The September 2012 Supplemental Sampling Analysis Work Plan (with the figure provided on September 19, 2012) is approved with the following conditions: 1. The monitoring well installation and development needs to be done in accordance with the November 2011 Monitoring Well Guidance and 18 AAC 78. The field notes need to be of sufficient detail to demonstrate this. 2. The field sampling needs to be done in accordance with the May 2010 Draft Field Sampling Guidance and 18 AAC 78. The field notes need to be of sufficient detail to demonstrate this. 3. All monitoring well borings and sidewall borings are to be sampled and logged every 2.5 feet (or continuous) from ground surface. 4. All excavation base boring analytical samples are to be collected from the top 2 feet of native soils below the 2012 backfill. 5. All excavation base boring sample locations with visual or olfactory or PID readings over 1.1 units will be submitted to the lab for analysis. 6. The soil water interface soil sample and the other most likely contaminated depth (based on visual or olfactory or PID readings) will need to be submitted to the lab for analysis from each monitoring well boring and sidewall boring. 7. For the sidewall boring SW26A the total depth needs to be at least 25 feet. 8. All sidewall borings are to be drilled in non 2012 backfilled soils. 9. Only drill cuttings from the 2012 backfill soil can be reused as backfill in the borings. 10. All borings need to be properly backfilled/sealed so they do not create a preferential pathway to groundwater. 11. As per the DEC letter of September 11, 2012 the Dam #3 location needs to be assessed and monitored in the future, and a work plan for that assessment, including a schedule for conducting that work, is to be submitted by October 1, 2012. 12. Additional quarterly groundwater monitoring of all current and future monitoring wells is required. The next quarterly monitoring event for monitoring wells MW-A, MW-B, and MW-C needs to be conducted by October 28, 2012. 13. Based on the results of the assessment and monitoring additional release investigation, corrective action, and monitoring may be required. The work plan proposes installing 5 additional monitoring wells along the perimeter of the 2012 excavation and to sample 20 borings within and along the 2012 excavation area.	Robert Weimer
9/21/2012	Site Visit	Site visit to observe supplemental assessment work.	Robert Weimer
10/12/2012	Update or Other Action	DEC requested a site map showing the proposed monitoring well locations for the Dam #3 Area and a copy of the original and new survey data/notes used to locate the proposed Dam #3 Area.	Robert Weimer
11/30/2012	Meeting or Teleconference Held	Meeting with the new property owner representative(Alpha Marine Services LLC that purchased the property on 11/9/2012) and his consultant to discuss past site work and the soil with petroleum odors found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. They did not go deeper than 10 feet in that boring. He will have has consultant submit a plan for the assessment of that area and a plan for the staging and possible on property treatment of excavated contaminated soil next summer. They plan to construct a building on the northeast portion of the property in early 2013. The initial sampling will be for an unknown contaminant.	Robert Weimer
12/3/2012	Site Characterization Workplan Approved	Plan approved to collect two soil samples from a soil boring next to where petroleum odors were found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. They plan to collect one soil sample from the depth most likely contaminated and one soil sample at a deeper depth to help characterize the vertical extent of the contamination. The soil samples will be for analyzed as an unknown contaminant. They plan to sample on December 3rd or 4th.	Robert Weimer
12/21/2012	Update or Other Action	DEC provided the following comments to the RPs consultant regarding work that still needed to be done to evaluate this site for closure. 1. As we have discussed previously the Dam #3 location is off property to the west of C Street. As per the DEC letter of September 11, 2012 the Dam #3 location needs to be assessed and monitored. A work plan for that assessment, including a schedule for conducting that work, is to be submitted by January 28, 2013. 2. Additional quarterly groundwater monitoring of all monitoring wells for BTEX, GRO, and DRO, depth to groundwater and groundwater flow direction is required. We need at least 4 quarterly groundwater monitoring events from each monitoring well. The next quarterly monitoring event for monitoring wells MW-A through MW-H needs to be conducted by January 28, 2013. 3. Based on the results of the assessment and monitoring additional release investigation, corrective action, and monitoring may be required.	Robert Weimer
1/18/2013	Site Characterization Report Approved	On December 3, 2012 two soil samples were collected from a soil boring next to where petroleum odors were found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. The soil boring was drilled to 20 feet below ground surface (bgs). Groundwater was encountered at 9.7 feet bgs. Silty sand fill was enountered down to 15 feet bgs, and a moist sandy silt at 15 feet bgs. The soil sample collected at the soil/water interface had a hydrocarbon odor and PID reading of 450 ppm, 0.215 mg/kg benzene, 22.3 mg/kg GRO, 85.2 mg/kg DRO, and 76.0 mg/kg RRO. Detectable PAH's were below cleanup levels, and PCBs, and chlorinated solvents were non-detect. The soil sample collected at 14 feet bgs had PID reading of 0.2 ppm, 0.00483 mg/kg benzene, 0.856 mg/kg GRO, <13.9 mg/kg DRO, and <13.9 mg/kg RRO. PAH's, PCBs, and chlorinated solvents were non-detect. Report approved. Next step is to conduct a release investigation to identify the nature and extent of the soil and groundwater contamination in that area. The DEC is requesting a work plan be submitted by 2/15/2013.	Robert Weimer
6/7/2013	Update or Other Action	DEC sent a request to the RP's consultant and the RP's representative for information regarding the Dam #3 area. DEC had not received the information requested back on October 26, 2012. We need the correct Dam #3 location surveyed in and information from the road project work as to whether any soil was removed from that area for the road work. If soil was removed from the Dam #3 area then to what depth was the soil excavated, and the depth of any fill that was placed in the Dam #3 area after excavation.	Robert Weimer
6/12/2013	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 77611 diesel tank spill.	Robert Weimer
7/10/2013	Document, Report, or Work plan Review - other	DEC approves work plan for the decommissioning of the on-property monitoring wells in the area of the diesel contamination excavation. DEC requested that once the well decommissioning has been completed a hardcopy final corrective action report be submitted (as specified in 18 AAC 78.276). The report needs to include documentation on the monitoring well decommissioning and updated Conceptual Site Model (CSM) to reflect current site conditions.	Robert Weimer
7/10/2013	Update or Other Action	RPs consultant provided additional information regarding the former dam#3 locaton. They have reviewed the ADOT as-builts for the C Street construction. Based on the RPs consultant's review it is their opinion that at least 5 feet of the 1989 original ground surface was removed during the roadway's construction. Based on the 1989 diagram the former dam#3 location would be under the paved C Street roadway.	Robert Weimer
8/29/2013	Cleanup Complete Determination Issued	DEC issues Corrective Action Complete letter for the 1989 diesel UST contamination.	Robert Weimer
8/7/2015	Update or Other Action	This file has been archived at Alaska Archive Barcode: 795759 Box 388	Susan Carberry

Action Date

Action

Description

DEC Staff

10/24/1989

Underground Storage Tank Site Characterization or Assessment

Reviewed a phase 1 site assessment report for UST removal.

Former Staff

11/3/1989

Leaking Underground Storage Tank Release Confirmed - Petroleum

LUST Site created in CSP for source area ID 77611 Diesel fuel discharged into drainage ditch and soil and groundwater contamination found associated with UST.

Former Staff

11/3/1989

Site Added to Database

Former Staff

11/3/1989

Leaking Underground Storage Tank Emergency Response

By 11/14/89 Eastwind Construction recovered about 20 gallons of an estimated 7,000 gallon spill. Berms used to help contain fuel movement.

Former Staff

11/3/1989

Site Visit

During site visit during tank removal, Scott Home, ADEC staff, discovered an enormous amount of diesel fuel draining into a ditch from the site's tank area.

Former Staff

11/4/1989

Leaking Underground Storage Tank Cleanup Initiated - Petroleum

Former Staff

11/7/1989

Release Investigation

Diesel contamination from Eastwind tank verified from wetland samples.

Former Staff

12/13/1989

Leaking Underground Storage Tank Corrective Action Underway

Initial corrective action plan was found to be unacceptable by ADEC. A revised plan was approved on 1/29/90.

Former Staff

12/14/1989

Document, Report, or Work plan Review - other

Results of samples collected during underground storage tank excavation obtained. Results indicated that additional soil and possibly groundwater remediation needed.

Former Staff

1/24/1990

Document, Report, or Work plan Review - other

Remedial action plan originally submitted on 12/13/89 was revised and accepted.

Former Staff

4/26/1990

Update or Other Action

A Compliance Order by Consent (COBC) is signed for this site for the cleanup and investigation of the contamination at this property. The COBC states that its terms are binding on any future lessees or owners of the property. If the COBC is violated the DEC can require a bond to be posted payable to the State of Alaska to complete remediation of the contamination.

Robert Weimer

7/2/1990

Document, Report, or Work plan Review - other

Contaminated soil disposal plan for UST site No. 1. Disposal of stockpile No. 1 with Alaska Pollution Control. Stockpile #2 at the Anchorage Regional Landfill. ADEC approves of plan in writing on 7/12/90.

Former Staff

8/6/1990

Update or Other Action

Alaska Pollution Control processed 41 tons of contaminated soil from UST Site No. 1 area. The Anchorage Regional Landfill also received 86 tons of contaminated soil from UST Site No. 1 area.

Former Staff

8/9/1990

Document, Report, or Work plan Review - other

Monitoring well location and sampling plan for UST Site No. 2. ADEC conditionally approves plan.

Former Staff

11/23/1990

Update or Other Action

Anchorage Sand & Gravel (AS&G) treated 854 tons of contaminated soil from the UST Site No. 2 area.

Former Staff

1/25/1991

Update or Other Action

VECO purchases "old" Eastwind and this property. VECO forms "new" Eastwind to purchase "old" Eastwind's personal property and name.

Robert Weimer

5/25/1993

Update or Other Action

Plan submitted to excavate contaminated soils, take confirmatory samples, and assess groundwater for contamination at the discharge point

Former Staff

10/1/1993

Document, Report, or Work plan Review - other

1993 Groundwater monitoring event of the one monitoring well. 15 mg/l DRO in the groundwater.

Robert Weimer

3/31/1994

Update or Other Action

Corrective action plan to excavate contaminated soils at several locations and have it thermally treated at CleanSoils.

Former Staff

3/31/1994

Document, Report, or Work plan Review - other

Some contaminated soil at dam # 3 was excavated and has been transported to Clean Soils for thermal treatment. Additional contamination remains at dam # 3 and other locations at the site.

Former Staff

10/1/1994

Document, Report, or Work plan Review - other

1994 Groundwater monitoring event. Up to 5.1 mg/l DRO in the groundwater. Two additional monitoring wells were installed in 1994. At total of 3 monitoring wells are at the site. These 3 monitoring wells are located to the northwest and west of the building.

Robert Weimer

11/15/1994

Document, Report, or Work plan Review - other

Some on-property and off-property (to the west) sampling was conducted. Contamination remains both on and off property.

Former Staff

9/26/1995

Update or Other Action

Reviewed a corrective action workplan to attempt to excavate out the remaining soil contamination.

Former Staff

1/3/1996

Document, Report, or Work plan Review - other

January 3, 1996 groundwater monitoring event. Up to 19 mg/l DRO in the groundwater. Depth to groundwater was between 10 and 12 feet below ground surface.

Robert Weimer

4/4/1996

Update or Other Action

"New" Eastwind merges with Norcon Inc. and is now a division of Norcon Inc. Norcon Inc. is now an RP for the contamination at this site.

Robert Weimer

4/10/1996

Document, Report, or Work plan Review - other

Reviewed a release investigation report. This release investigation identified contamination remaining near former tank area and off property in wetland area.

Former Staff

4/19/1996

Document, Report, or Work plan Review - other

April 19, 1996 groundwater monitoring event. Up to 12 mg/l DRO in the groundwater. Depth to groundwater was 12 to 14 feet below ground surface.

Robert Weimer

5/6/1996

Site Characterization Report Approved

November 5, 1995 assessment at the Dam#3 location located off property to the west of the Eastwind/Veco property. A total of 44.6 tons of contaminated soil was excavated at 3 locations and thermally treated. Up to 490 mg/kg DRO was left in the three excavation areas. The samples were only analyzed for DRO. Contamination was left above cleanup levels in 7 locations sampled including base and sidewall samples. In addition 4 cubic yards of contaminated soil was excavated and thermally treated at the hydraulic spill area near the on property building. Confirmation samples taken from the hydraulic spill excavation met site cleanup levels for DRO.

Robert Weimer

8/5/1996

Update or Other Action

Department of Law issues a letter to Norcon/VECO not to fill in a ditch until ADEC has had a chance to review the information submitted on August 1, 1996.

Robert Weimer

8/6/1996

Update or Other Action

Meeting between ADEC, Department of Law, and VECO/Norcon regarding the site. A meeting follow up letter was sent be Department of Law on August 13, 1996. VECO/Norcon is requested not to grade over contaminated area, to conduct further investigation in that area, to assess the west berm area for contamination, to submit a report on site sampling, and to submit a plan for completion of the investigation and cleanup of the site.

Robert Weimer

8/8/1996

Document, Report, or Work plan Review - other

August 8, 1996 groundwater monitoring event. Up to 2.9 mg/l DRO in the groundwater. Depth to groundwater was 7 to 10 feet below ground surface.

Robert Weimer

10/15/1996

Document, Report, or Work plan Review - other

October 15, 1996 groundwater monitoring event. Up to 2.4 mg/l DRO in the groundwater. Depth to groundwater was 6 to 9 feet below ground surface.

Robert Weimer

11/19/1996

Update or Other Action

ADEC approves reducing groundwater monitoring to annually for monitoring wells MW-2 and MW-3, and quarterly for MW-1.

Robert Weimer

11/26/1996

Site Characterization Report Approved

September 10, 1996 assessment at the Dam#3 location located off property to the west of the Eastwind/Veco property. A total of 8.18 tons of contaminated soil was excavated at 3 locations and thermally treated. Up to 5,100 mg/kg DRO was left in the three excavation areas. The samples were only analyzed for DRO. Contamination was left above cleanup levels in 7 of the 10 locations sampled including base and sidewall samples. Groundwater was encountered at 3 feet below ground surface.

Robert Weimer

12/4/1996

Update or Other Action

ADEC letter to VECO/Norcon requesting corrective action plan for the site.

Robert Weimer

5/6/1997

Document, Report, or Work plan Review - other

May 6, 1997 groundwater monitoring event. Up to 6.1 mg/l DRO in the groundwater. Depth to groundwater was 8 to 12 feet below ground surface.

Robert Weimer

7/28/1997

Document, Report, or Work plan Review - other

July 28, 1997 groundwater monitoring event. Up to 3.1 mg/l DRO in the groundwater. Depth to groundwater was 6 to 9 feet below ground surface.

Robert Weimer

11/20/1997

Update or Other Action

ADEC sends Notification of Intent to Cost Recover Letter to EASTWIND, INC.

Former Staff

12/9/1997

Update or Other Action

Returned letter from Eastwind PO Box 11-1990 in Anchorage. Sent to 6400 Rowenna Street in Anchorage. New address is attn: Tom McKee, veco/Eastwind P.O. Box 190947 Anchorage AK 99519.

Former Staff

1/23/1998

Update or Other Action

ADEC sends Notification to Cost Recovery letter to the current owner Veco/Eastwind.

Robert Weimer

5/1/1998

Document, Report, or Work plan Review - other

May 1, 1998 Groundwater monitoring event. Up to 5.9 mg/l DRO in the groundwater. Depth to groundwater was 6 to 11 feet below ground surface.

Robert Weimer

7/29/1998

Document, Report, or Work plan Review - other

July 29, 1998 Groundwater monitoring event. Up to 3.4 mg/l DRO in the groundwater. Depth to groundwater was 5 to 8 feet below ground surface.

Robert Weimer

8/25/1998

Update or Other Action

ADEC letter requesting corrective action plan to be submitted by 9/16/98.

Robert Weimer

4/12/1999

Update or Other Action

ADEC letter again requesting corrective action plan (to be submitted by 5/12/99).

Robert Weimer

4/30/1999

Document, Report, or Work plan Review - other

April 30, 1999 Groundwater monitoring event. Up to 3.47 mg/l DRO in the groundwater. Depth to groundwater was 11 to 15 feet below ground surface.

Robert Weimer

12/1/1999

Update or Other Action

ADEC sends Warning Letter to VECO for failure to provide corrective action plan. ADEC requests corrective action plan and site status update by 2/1/00. The warning letter notes that there is evidence that since VECO purchased the property there have been releases of petroleum from the site to the adjacent property to the west (Marten's), the on going release was confirmed by VECO's consultant (DOWL) in their 1996 report.

Daniel Rogers

9/9/2002

Update or Other Action

ADEC letter requesting the submittal, by October 9, 2002, of a corrective action plan and for groundwater monitoring (of all three monitoring wells for BTEX, GRO, and DRO) at the site.

Robert Weimer

4/19/2005

Site Characterization Report Approved

Groundwater sampling on the adjacent property located to the south (10300 King Street) found 2.24 mg/L DRO in the groundwater. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.

Robert Weimer

9/22/2005

Update or Other Action

Groundwater sampling on the adjacent property located to the south (10300 King Street) found 2.86 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. Depth to groundwater was 5.44 to 7.54 feet below ground surface. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.

Robert Weimer

12/7/2005

Site Characterization Report Approved

Groundwater sampling on the adjacent property located to the south (10300 King Street) found 3.16 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.

Robert Weimer

4/4/2006

Update or Other Action

ADEC letter requesting groundwater monitoring for BTEX, GRO, and DRO by 5/15/06, and release investigation workplan to define the extent of the groundwater contamination and soil contamination at Dam #3 by 6/1/06.

Robert Weimer

5/22/2006

Update or Other Action

Letter from RP's attorney alleges that NORCON property to the south (10300 King Street, file number 2100.38.463) was impacted in the past from a property to the east owned by Alaska Petroleum Co. and not from the 101 East 100th street site.

Robert Weimer

12/18/2006

Update or Other Action

Reviewed ADEC and CORPS files and could find no documentation of contamination coming from the Alaska Petroleum Co. site or any other site in the area on to the 101 East 100th site or the NORCON site to the south.

Robert Weimer

12/19/2006

Update or Other Action

Talked with the Municipality of Anchorage staff and they could find no documentation of contamination coming from the Alaska Petroleum Co. site or any other site in the area on to the 101 East 100th site or the NORCON site to the south. Based on available data it appears that the NORCON property is being impacted by the 101 East 100th site.

Robert Weimer

12/20/2006

Site Characterization Report Approved

Groundwater sampling on the adjacent property located to the south (10300 King Street) found 4.0 mg/L DRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.

Robert Weimer

2/7/2007

Exposure Tracking Model Ranking

Site ranked on the new Exposure Tracking Model (ETM). The ETM is a new site ranking system that looks at, based on available data, the potential exposure pathways for the contamination remaining at the site.

Robert Weimer

9/20/2007

Update or Other Action

Based on Deed records this property was purched by AEL Anchorage LLC (Terry Draegar, ESQ.) on this date. As purchaser they are bound by the terms of the existing COBC. AEL Anchorage LLC also owns the east site of the property that is another contaminated site. See file number 2100.38.435.

Robert Weimer

11/2/2007

Site Characterization Report Approved

Groundwater sampling on the adjacent property located to the south (10300 King Street) found 3.85 mg/L DRO, 1.06 mg/l RRO, <0.5 ug/l benzene, and <0.05 mg/l GRO in the groundwater. Groundwater flow direction was toward the southwest. This contamination appears to be coming from the VECO site. See CS file number 2100.38.463.

Robert Weimer

10/28/2011

Update or Other Action

To date ADEC has not received the requested groundwater monitoring for BTEX, GRO, and DRO of the site monitoring wells, and the release investigation workplan to define the extent of the groundwater contamination and soil contamination at Dam #3. The Dam #3 area may have been effected by utility and/or road work associated with the extension of C Street.

Robert Weimer

12/9/2011

Meeting or Teleconference Held

Meeting with property owners representative and their consultant to discuss the site history, the contaminated sites in the area, and site work to be conducted. The consultant will contact DOWL to survey in the locations of dam #3 including vertical and information whether/how much the area was excavated/filled during the road work, and survey the location of the site monitoring wells. He will assess the condition of the monitoring wells. He will then provide a report of the results and provide a work plan for conducting confirmation sampling at dam#3 and the sampling of the groundwater. The owner representative will also contact Target about Target sampling the monitoring wells on the Target store property. The owners representative said that when Target purchased the store property Target agreed to be responsible for all contamination on the Target property.

Robert Weimer

1/27/2012

Update or Other Action

Talked with RPs consultant. He will submit the results of his research and work plan for the requested site work.

Robert Weimer

3/9/2012

Document, Report, or Work plan Review - other

ADEC reviewed the February 2012 "Sampling and Analysis Work Plan for Property Located at 101 East 100th Avenue" submitted by TELLUS, Ltd. on behalf of AEL Anchorage LLC. The work plan proposes to collect soil and groundwater samples to help assess for remaining contamination for the above referenced site. The work plan as proposed in not approved. The Department requests that AEL Anchorage LLC submit a revised work plan by March 31, 2012 that includes the following modifications: 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells are to remain for future sampling. 3. For the replacement monitoring well area at each boring location analytical soil samples need to be collected at the soil/water interface and the other depth most likely to be contaminated based on field readings and observations. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample most likely to have the highest contamination based on field readings and observations of all of the 3 monitoring well area borings is to be also be analyzed for PAHs, including a field duplicate for BTEX, GRO, DRO, and PAHs. 4. Each of the replacement monitoring well area borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater sample from the monitoring well in this area most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs, including a field duplicate for PAHs, BTEX, GRO, and DRO. All of the monitoring wells are to remain for future sampling. 5. No silica gel cleanup is to be conducted on any samples prior to analysis. 6. The three damaged existing monitoring wells will need to be properly decommissioned in accordance with current ADEC guidance. 7. The purge/development water is not approved for disposal on-site. All drill cuttings and purge/development water will need to be properly containerized for treatment and disposal under a separate request. 8. The final report will need to include complete copies of all field notes. 9. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 10. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.

Robert Weimer

4/9/2012

Document, Report, or Work plan Review - other

ADEC reviewed the March 2012 "Sampling and Analysis Work Plan for Property Located at 101 East 100th Avenue" submitted by TELLUS, Ltd. on behalf of AEL Anchorage LLC. The work plan proposes to collect soil and groundwater samples to help assess for remaining contamination for the above referenced site. The work plan is conditionally approved: 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells are to remain for future sampling. 3. The replacement monitoring wells need to remain for future sampling. 4. The three damaged existing monitoring wells will need to be properly decommissioned in accordance with current ADEC guidance. 5. The final report will need to include complete copies of all field notes. 6. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 7. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.

Robert Weimer

4/17/2012

Site Visit

Morning site visit to observe the soil sampling and installation of the first replacement monitoring well. Discuss problems with the volatile sampling procedures in the first soil boring with the consultant. Surveyor was on site to mark the location of Dam #3 in the C Street right-of-way. Elevated field readings and fuel odor in soils at the 12-15' interval.

Robert Weimer

4/18/2012

Site Visit

Afternoon site visit to observe monitoring well development. Discuss volatile sampling procedures with the consultant. Discussed with consultant his field observations and soil sampling from the three soil borings sampled. They did rush analysis on the soil samples from the first soil boring and expect the results by Friday. They plan to submit a work plan for drilling and sampling additional soil borings to help define the extent of the contamination identified in the first soil boring.

Robert Weimer

4/18/2012

Document, Report, or Work plan Review - other

Between April 17, 2012 and April 18, 2012 three replacement monitoring wells were installed and soil samples were collected. Up to 848 mg/kg DRO, 138 mg/kg GRO, some detectable PAHs below cleanup levels, and <0.0125 mg/l benzene in the soil samples collected. As discussed with the consultant during the site visit there were problems observed with the volatile sampling procedures in the first soil boring (MWA) that will bias low the sampling results.

Robert Weimer

4/20/2012

Document, Report, or Work plan Review - other

April 20, 2012 groundwater monitoring event. The three replacement monitoring wells (MWA, MWB, and MWC) were sampled for DRO, GRO, PAH (1 monitoring well) and BTEX. Up to 0.575 mg/l DRO, <0.05 mg/l GRO, <0.5 ug/l benzene, and 0.248 ug/l naphthalene. Groundwater flow direction was to the west. Depth to groundwater was about 1 to 7 feet below ground surface.

Robert Weimer

4/24/2012

Document, Report, or Work plan Review - other

Between April 23, 2012 and April 24, 2012 eleven soil borings were sampled at the site to help define the extent of the contamination at the site. Up to 1,900 mg/kg DRO, 172 mg/kg GRO, and 0.0315 mg/kg benzene in the soil samples collected.

Robert Weimer

5/30/2012

Site Characterization Workplan Approved

DEC review of May 2012 Remedial Action Work Plan for the property located at 101 East 100th Avenue, Anchorage, Alaska. Within this plan, you proposed to excavate contaminated soil from the source area excluding overburdened soil from 0 to 5 feet below ground surface. The excavation area is anticipated to be triangular shaped and is estimated to measure 75 feet by 75 feet by 55 feet. Once hydrocarbon soil is re-encountered with the source area, the excavated impacted material will be loaded directly into side dump trailers and trucked to Alaska Soil Recycling for thermal treatment. Discrete soil sampling procedures will be implemented within the excavation pit and sidewalls to assess whether all contaminated soil has been removed. Collected soil samples slated for laboratory analysis will be analyzed for GRO, DRO, and BTEX. Groundwater monitoring well MW A will be decommissioned and replaced with monitoring well MW A1. All three existing wells will be re-sampled following the well replacement to be analyzed for GRO, DRO, and BTEX. Also requested approval to dispose of investigative derived waste (soil and groundwater). Clean soil and groundwater will be disposed of on-site while contaminated soil drill cuttings will be incorporated into excavated contaminated soil slated to be thermally treated at ASR. The subject work plan is approved under the following conditions: 1. Tellus, Ltd, will adhere to our Laboratory Data and Quality Assurance Policy (Tech Memo 06-002) when collecting and evaluating laboratory analytical data. We posted a technical memorandum on environmental laboratory analytical data requirements at http://www.dec.state.ak.us/spar/csp/guidance/tm_lab_qa.pdf and laboratory data review checklist at http://www.dec.state.ak.us/spar/csp/guidance/lab_checklist.pdf. Please note that the laboratory data review checklist must be completed for every laboratory analytical data deliverable received. Laboratory data deliverables that are missing the chain of custodies and/or sample receipt forms are insufficient to complete the laboratory data review checklist. 2. Tellus, Ltd, will adhere to our November 2011 Monitoring Well Guidance, November 2002 Underground Storage Tank Procedures Guidance and our May 2010 Draft Field Sampling Guidance when conducing site characterization and cleanup. We posted these Guidance’s at http://dec.alaska.gov/spar/guidance.htm#csp. 3. All drill cuttings collected to date will be assumed to be contaminated due to questions regarding the quality/integrity of the soil GRO and BTEX data. These cutting will be incorporated into soil scheduled to be thermally treated at Alaska Soil Recycling. 4. Tellus, Ltd will analyze at least one soil and one groundwater sample for PAHs in accordance with DEC approved methods.

Robert Weimer

6/12/2012

Document, Report, or Work plan Review - other

Preliminary water sample results from the groundwater pumped from the soil excavation into holding tanks. Up to 8.90 mg/l DRO, 0.517 mg/l GRO, 2.96 ug/l toluene, 25.1 ug/l ethylbenzene, and 44.4 ug/l xylenes. They are looking at getting a dicharge permit from AWWU to discharge the contaminated water into the sanitary sewer. About 13,000 gallons of contaminated water have been pumped into the holding tanks to date.

Robert Weimer

7/12/2012

Update or Other Action

On July 12, 2012 a replacement monitoring well MWAA was installed to replace monitoring well MWA that was removed during the excavation conducted at the site in June/July 2012.

Robert Weimer

8/10/2012

Document, Report, or Work plan Review - other

DEC reviewed the site release investigation information provided to date emailed RP's attorney and they are still missing items 1, 2, 5, and 7 (determining groundwater gradient for each monitoring event) in the April 9, 2012 conditional approval letter (see attached and copied below). The information in item 7 is very important in evaluating whether seasonally the existing 3 monitoring wells are adequate to characterize the groundwater contamination at the site. 1. As requested previously, the Dam #3 location must be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The proposed supplemental work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples are to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. The supplemental work plan for the Dam #3 location is to be submitted no later than May 1, 2012. 2. Each of the Dam #3 borings are to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of these monitoring wells are to remain for future sampling. 5. The final report will need to include complete copies of all field notes. 7. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements.

Robert Weimer

9/7/2012

Document, Report, or Work plan Review - other

July 28, 2012 groundwater monitoring event. The three replacement monitoring wells (MWAA - replacement well for monitoring well MWA, MWB, and MWC) were sampled for DRO, GRO, and BTEX. Up to <0.391 mg/l DRO, <0.05 mg/l GRO, and <0.5 ug/l benzene. Groundwater flow direction was to the southwest. Depth to groundwater was about 2 to 4 feet below ground surface. Due to the size of the contaminated soil excavation and the variability in groundwater flow direction, the three existing site monitoring wells are not adequate to assess for groundwater contamination at this site. Additional monitoring wells and additional groundwater monitoring events are needed to assess the nature and extent of the groundwater contamination at this site.

Robert Weimer

9/7/2012

Document, Report, or Work plan Review - other

July 2012 Remedial Action Report. Between June 8, 2012 and June 30, 2012 7,629.79 tons of contaminated soil was excavated and hauled off-site for thermal treatment at ASR. The excavation was approximately 14,000 square feet at the surface as of July 2, 2012. The depth of the excavation ranged between 13 feet and 25 feet below ground surface. Approximately 3 feet of clean overburden soil was removed and reused as backfill. Up to 745 mg/kg DRO in the samples collected from the base of the excavation, and up to 2,960 mg/kg DRO in the samples collected from the excavation sidewalls. Additional soil was removed from those areas. 61 analytical samples were collected from the base of the excavation and 51 analytical samples were collected from the sidewalls. One additional analytical sample was collected from each of the 4 locations (2 base and 2 sidewall) that had soil above cleanup levels. Excavation base sampling was not done in accordance with the conditionally approved plan. For an excavation of 14,000 square feet at least 148 field screening locations are required but only 60 were collected. In addition for the two excavation base locations where additional soil was excavated those areas did not have the required base/sidewall field screening and analytical sampling to assess the area excavated. Only one field screening and one analytical sample was collected. The eastern portion (approximately 5,200 square feet) of the excavation base required at least 52 field screening and 21 analytical samples, but had only 13 field screening and 13 analytical samples collected. Sidewall sampling was not done in accordance with the conditionally approved plan. Field screening was not conducted every 10 linear feet of sidewall and not done at multiple depths/areas of most likely contamination. The height of the sidewalls ranged between 13 and 25 feet and no field screening conducted at the soil water interface. Field screening samples were only collected at the depth sampled. There were not analytical samples collected for each 20 foot section of sidewall as required. In addition for the two sidewall locations where additional soil was excavated those areas did not have the required field screening sidewall and analytical sampling to assess the areas excavated. Only one field screening and one analytical sample was collected.

Robert Weimer

9/11/2012

Update or Other Action

DEC letter to AEL Anchorage LLC noting that the site work done in June/July 2012 was not done in accordance with the conditionally approved work plan. Due to the size of the contaminated soil excavation and the variability in groundwater flow direction during the April 2012 and July 2012 groundwater monitoring events, the three existing site monitoring wells are not adequate to assess for groundwater contamination at this site. Additional monitoring wells and additional groundwater monitoring events are needed to assess the nature and extent of the groundwater contamination at this site. The Department requests that AEL Anchorage LLC submit a work plan by October 1, 2012 that includes the following: 1. As requested previously, the Dam #3 location needs to be assessed for soil and groundwater contamination. This area has been surveyed in by DOWL Engineers in 1989 and marked on site maps and aerial photos. The Department is requesting that the location of the Dam #3 sampling conducted on September 10, 1996 be accurately identified so those areas can be assessed for soil and groundwater contamination. The work plan needs to include a site map showing the areas to be assessed and survey data used to choose those locations. At least three soil borings completed as monitoring wells are requested to help assess this area. In each boring location analytical soil samples need to be collected at the soil/water interface and other depth deeper than the soil/water interface most likely to be contaminated based on field readings and observations. If soil shallower than the soil/water interface appears more contaminated than the other two depths based on field readings and observations then a third analytical sample will need to be collected from that boring. Each of analytical samples need to be analyzed for BTEX, GRO, and DRO. The soil sample of the Dam #3 borings most likely to have the highest contamination based on field readings and observations is also to be analyzed for PAHs. 2. Each of the Dam #3 borings need to be completed as monitoring wells, and have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater in the Dam #3 monitoring well most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs. All of the monitoring wells need to remain for future sampling. 3. For the on property excavation area base and sidewalls, supplemental analytical soil samples need to be collected to complete the assessment of that area in accordance with the conditionally approved remedial action plan. Each of analytical samples need to be analyzed for BTEX, GRO, and DRO, with at least 10 percent of soil samples most likely to have the highest contamination based on field readings and observations to be also be analyzed for PAHs, including 10 percent field duplicates for BTEX, GRO, DRO, and PAHs. 4. Additional monitoring wells need to be installed around the perimeter and in the down gradient directions of the on property excavation. These monitoring wells and the existing monitoring wells need to have groundwater samples collected and analyzed for BTEX, GRO, and DRO. The groundwater sample from the monitoring well in this area most likely to have the highest contamination based on field readings and observations is to be also be analyzed for PAHs, including a field duplicate for PAHs, BTEX, GRO, and DRO. All of the monitoring wells need to remain for future sampling. 5. The ADEC project manager, Robert Weimer is to be notified at least 3 days prior to when the field work is to be conducted so ADEC staff can have an opportunity to observe the field work. 6. All of the monitoring wells installed need to be surveyed so the groundwater gradient can be determined and be included in the report, along with depth to groundwater measurements. The Department also requests that AEL Anchorage LLC submit by October 1, 2012 documentation for the treatment and disposal of the contaminated water that was removed from the excavation.

Robert Weimer

9/12/2012

Meeting or Teleconference Held

Meeting with owners representative to discuss the DEC September 11, 2012 letter regarding the site work done in June/July 2012 and the additional site work needed to evaluated the site for closure. Follow up meeting scheduled for September 13, 2012 with the consultant so they can prepare a work plan to conduct requestded site work in the DEC September 11, 2012 letter.

Robert Weimer

9/13/2012

Meeting or Teleconference Held

Meeting with owners representative and the consultant to discuss the DEC September 11, 2012 letter regarding the site work done in June/July 2012 and the additional site work needed to evaluated the site for closure. The consultant will prepare a work plan to conduct requestded site work in the DEC September 11, 2012 letter. The consultant will also double check the location of the dam #3 with the old and current air photos.

Robert Weimer

9/20/2012

Site Characterization Workplan Approved

The September 2012 Supplemental Sampling Analysis Work Plan (with the figure provided on September 19, 2012) is approved with the following conditions: 1. The monitoring well installation and development needs to be done in accordance with the November 2011 Monitoring Well Guidance and 18 AAC 78. The field notes need to be of sufficient detail to demonstrate this. 2. The field sampling needs to be done in accordance with the May 2010 Draft Field Sampling Guidance and 18 AAC 78. The field notes need to be of sufficient detail to demonstrate this. 3. All monitoring well borings and sidewall borings are to be sampled and logged every 2.5 feet (or continuous) from ground surface. 4. All excavation base boring analytical samples are to be collected from the top 2 feet of native soils below the 2012 backfill. 5. All excavation base boring sample locations with visual or olfactory or PID readings over 1.1 units will be submitted to the lab for analysis. 6. The soil water interface soil sample and the other most likely contaminated depth (based on visual or olfactory or PID readings) will need to be submitted to the lab for analysis from each monitoring well boring and sidewall boring. 7. For the sidewall boring SW26A the total depth needs to be at least 25 feet. 8. All sidewall borings are to be drilled in non 2012 backfilled soils. 9. Only drill cuttings from the 2012 backfill soil can be reused as backfill in the borings. 10. All borings need to be properly backfilled/sealed so they do not create a preferential pathway to groundwater. 11. As per the DEC letter of September 11, 2012 the Dam #3 location needs to be assessed and monitored in the future, and a work plan for that assessment, including a schedule for conducting that work, is to be submitted by October 1, 2012. 12. Additional quarterly groundwater monitoring of all current and future monitoring wells is required. The next quarterly monitoring event for monitoring wells MW-A, MW-B, and MW-C needs to be conducted by October 28, 2012. 13. Based on the results of the assessment and monitoring additional release investigation, corrective action, and monitoring may be required. The work plan proposes installing 5 additional monitoring wells along the perimeter of the 2012 excavation and to sample 20 borings within and along the 2012 excavation area.

Robert Weimer

9/21/2012

Site Visit

Site visit to observe supplemental assessment work.

Robert Weimer

10/12/2012

Update or Other Action

DEC requested a site map showing the proposed monitoring well locations for the Dam #3 Area and a copy of the original and new survey data/notes used to locate the proposed Dam #3 Area.

Robert Weimer

11/30/2012

Meeting or Teleconference Held

Meeting with the new property owner representative(Alpha Marine Services LLC that purchased the property on 11/9/2012) and his consultant to discuss past site work and the soil with petroleum odors found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. They did not go deeper than 10 feet in that boring. He will have has consultant submit a plan for the assessment of that area and a plan for the staging and possible on property treatment of excavated contaminated soil next summer. They plan to construct a building on the northeast portion of the property in early 2013. The initial sampling will be for an unknown contaminant.

Robert Weimer

12/3/2012

Site Characterization Workplan Approved

Plan approved to collect two soil samples from a soil boring next to where petroleum odors were found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. They plan to collect one soil sample from the depth most likely contaminated and one soil sample at a deeper depth to help characterize the vertical extent of the contamination. The soil samples will be for analyzed as an unknown contaminant. They plan to sample on December 3rd or 4th.

Robert Weimer

12/21/2012

Update or Other Action

DEC provided the following comments to the RPs consultant regarding work that still needed to be done to evaluate this site for closure. 1. As we have discussed previously the Dam #3 location is off property to the west of C Street. As per the DEC letter of September 11, 2012 the Dam #3 location needs to be assessed and monitored. A work plan for that assessment, including a schedule for conducting that work, is to be submitted by January 28, 2013. 2. Additional quarterly groundwater monitoring of all monitoring wells for BTEX, GRO, and DRO, depth to groundwater and groundwater flow direction is required. We need at least 4 quarterly groundwater monitoring events from each monitoring well. The next quarterly monitoring event for monitoring wells MW-A through MW-H needs to be conducted by January 28, 2013. 3. Based on the results of the assessment and monitoring additional release investigation, corrective action, and monitoring may be required.

Robert Weimer

1/18/2013

Site Characterization Report Approved

On December 3, 2012 two soil samples were collected from a soil boring next to where petroleum odors were found at 10 feet below ground surface in one of the geotechnical borings in the northeast portion of the property. The soil boring was drilled to 20 feet below ground surface (bgs). Groundwater was encountered at 9.7 feet bgs. Silty sand fill was enountered down to 15 feet bgs, and a moist sandy silt at 15 feet bgs. The soil sample collected at the soil/water interface had a hydrocarbon odor and PID reading of 450 ppm, 0.215 mg/kg benzene, 22.3 mg/kg GRO, 85.2 mg/kg DRO, and 76.0 mg/kg RRO. Detectable PAH's were below cleanup levels, and PCBs, and chlorinated solvents were non-detect. The soil sample collected at 14 feet bgs had PID reading of 0.2 ppm, 0.00483 mg/kg benzene, 0.856 mg/kg GRO, <13.9 mg/kg DRO, and <13.9 mg/kg RRO. PAH's, PCBs, and chlorinated solvents were non-detect. Report approved. Next step is to conduct a release investigation to identify the nature and extent of the soil and groundwater contamination in that area. The DEC is requesting a work plan be submitted by 2/15/2013.

Robert Weimer

6/7/2013

Update or Other Action

DEC sent a request to the RP's consultant and the RP's representative for information regarding the Dam #3 area. DEC had not received the information requested back on October 26, 2012. We need the correct Dam #3 location surveyed in and information from the road project work as to whether any soil was removed from that area for the road work. If soil was removed from the Dam #3 area then to what depth was the soil excavated, and the depth of any fill that was placed in the Dam #3 area after excavation.

Robert Weimer

6/12/2013

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 77611 diesel tank spill.

Robert Weimer

7/10/2013

Document, Report, or Work plan Review - other

DEC approves work plan for the decommissioning of the on-property monitoring wells in the area of the diesel contamination excavation. DEC requested that once the well decommissioning has been completed a hardcopy final corrective action report be submitted (as specified in 18 AAC 78.276). The report needs to include documentation on the monitoring well decommissioning and updated Conceptual Site Model (CSM) to reflect current site conditions.

Robert Weimer

7/10/2013

Update or Other Action

RPs consultant provided additional information regarding the former dam#3 locaton. They have reviewed the ADOT as-builts for the C Street construction. Based on the RPs consultant's review it is their opinion that at least 5 feet of the 1989 original ground surface was removed during the roadway's construction. Based on the 1989 diagram the former dam#3 location would be under the paved C Street roadway.

Robert Weimer

8/29/2013

Cleanup Complete Determination Issued

DEC issues Corrective Action Complete letter for the 1989 diesel UST contamination.

Robert Weimer

8/7/2015

Update or Other Action

This file has been archived at Alaska Archive Barcode: 795759 Box 388

Susan Carberry

Contaminant Information

Name	Level Description	Media	Comments
BTEX	< Method 2 Most Stringent	GroundwaterSoilSoilGroundwaterGroundwaterSoil

Name

Level Description

Media

Comments

BTEX

< Method 2 Most Stringent

GroundwaterSoilSoilGroundwaterGroundwaterSoil

Control Type

Type	Details
No ICs Required

Type

Details

No ICs Required

Requirements

Description	Details
Advance approval required to transport soil or groundwater off-site.

Description

Details

Advance approval required to transport soil or groundwater off-site.

closure letter

Hazard ID	Site Name	File Number
25985	Commercial Property - 151 West 100th Avenue	2100.38.539
3004	Former Quality Fabrication	2100.38.198

Missing Location Data

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Alaska Department of Environmental Conservation

Site Report: Former Eastwind Construction Yard

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

closure letter

Missing Location Data

State of Alaska Department of Environmental Conservation