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Site Report: Residence - 9209 & 9211 Sharon Street

Site Name: Residence - 9209 & 9211 Sharon Street
Address: 9209 & 9211 Sharon Street, Juneau, AK 99801
File Number: 1513.38.087
Hazard ID: 25794
Status: Active
Staff: Bill O'Connell, 9072693057 bill.oconnell@alaska.gov
Latitude: 58.387798
Longitude: -134.584961
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.

Problems/Comments

This site includes two separate spills from a duplex (9209 and 9211 Sharon Street). Both diesel releases were from above ground home heating oil tanks, one adjacent to each unit. The first spill occurred at 9211 in December of 2006 and was estimated at approximately 30 gallons. The second spill at 9209 occurred in December of 2008 and an estimated 200 gallons were released. In August 2011, following initial response actions, sampling indicated an increase in surface soil contamination above DEC cleanup levels at the 9211 spill location which may be associated with a sump draining in the crawlspace of one or both locations. Since the initial response, the diesel range organics (DRO) contaminated soil has been remediating in place using nutrient ports. In September of 2015, the west side (9211 Sharon St.) had remediated and no further treatment was necessary in that area. Results of September 2015 sampling indicated that the east side of the property (9209 Sharon St.) had DRO concentrations of approximately 4,950 mg/kg and will continue in-situ treatment.

Action Information

Action Date Action Description DEC Staff
1/3/2012 Spill Transferred from Prevention Preparedness and Response Program Spill transferred by PERP staff Scot Tiernan. Spill no. 06119934104; spill date = 12/7/06; location = 9211 Sharon Street; substance = diesel; quantity = ~30 gallons. Mitzi Read
1/3/2012 Spill Transferred from Prevention Preparedness and Response Program Spill transferred by PERP staff Scot Tiernan. Spill no. 08119936501; spill date = 12/30/08; PERP file no. 1513.02.338; location = 9209 Sharon Street; substance = diesel; quantity = ~200 gallons. Mitzi Read
1/12/2012 Site Added to Database A new site has been added to the database Mitzi Read
1/18/2012 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79231 name: 2 Aboveground Heating Oil Tanks Mitzi Read
4/20/2012 Site Visit ADEC staff performed a site visit. Inspected at 9209 Sharon Street active addition of fertilizer into pvc piping in the impacted area. No apparent signs of contamination was visible or observed. Roadside draining ditch abuting the property appeared to be burned. Denise Elston
4/7/2014 Update or Other Action Spoke with homeowner re: fertilzer remediation on his property and he said that addition of fertilizer is on-going and that he plans to re-sample in the fall. Danielle Duncan
7/18/2014 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79231 2 Aboveground Heating Oil Tanks. Danielle Duncan
8/10/2015 Update or Other Action Sent request for sampling via certified mail this date in preparation for site closure. Danielle Duncan
8/11/2015 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79231 2 Aboveground Heating Oil Tanks. Danielle Duncan
9/1/2015 Document, Report, or Work plan Review - other Rec'd Nortech's report "RE: November 2014 Annual Soil Sampling Assessment" this date via email. Danielle Duncan
9/16/2015 Site Characterization Report Approved Approved Nortech's report "Re: November 2014 Annual Soil Sampling Assessment 9209 and 9211 Sharon Street Juneau, Alaska." The west side of the duplex has remediated to undetectable levels of DRO however a vapor barrier is still in place and I requested that when they sample the east side of the property where contamination remains, that they investigate the vapor intrusion hazard. DRO levels on the east side of the property are 4,440-4,950 mg/kg. Petroleum vapors have never been detected on the east side of the property. The site is being remediated using nutrient ports and will continue to do so. Nortech plans on sampling the site again. Danielle Duncan
9/30/2015 Meeting or Teleconference Held The RP stopped by the office with concerns about his bill and I brought his concerns to the attention of the billing department. The RP will continue adding fertilizer to the nutrient ports and may add a couple more ports to speed up the process. The RP is against excavation due to trees in the area that the RP does not want to cut down. We don't plan on sampling again until late 2016 or early 2017. Danielle Duncan
10/31/2016 Update or Other Action Spoke to the homeowner - RegenOx application continues and we will check back in the spring. Danielle Duncan
9/12/2017 Document, Report, or Work plan Review - other Recently, 5 soil borings were made in locations previously sampled at up to 5 feet below ground surface. A photoionization detector (PID) was used to field screen soils. PID readings ranged from 2-929 ppm. Two soil samples and a duplicate were collected from sampling locations S3 and S4 and analyzed for DRO. The resulting concentrations were non-detect to 381 mg/kg at 2 feet below ground surface. The 18 AAC 75 Method 2 cleanup level for the over-40 inch precipitation zone for DRO is 230 mg/kg. The Report indicates that the impacted soil has not yet remediated to below ADEC Method 2 cleanup levels. The ADEC recommends that remediation continue and sampling occur again next year after the submittal of a work plan. Danielle Duncan
1/3/2019 Site Characterization Report Approved Reviewed the Site Assessment Report dated December 2018. Diesel range organics in soil does not meet cleanup levels and must be delineated. Additionally, due to the presence of petroleum contamination at the groundwater interface, the groundwater must be investigated for contamination above cleanup levels in 18 AAC 75.345 Table C. Danielle Duncan
1/24/2019 Meeting or Teleconference Held Meeting with Nortech and the responsible party re: data gaps and potential groundwater contamination. Nortech will prepare additional information and/or figures and we will regroup and discuss closure options then. Danielle Duncan
6/24/2019 Site Characterization Workplan Approved Approved the Perched Water Sampling and Analysis Plan this date. A temporary groundwater sampling point will be installed to determine whether groundwater contamination is present. A limited number of soil samples will also be collected. Danielle Duncan
1/31/2020 Site Characterization Report Approved The Alaska Department of Environmental Conservation’s (ADEC) Contaminated Sites Program reviewed and approved the “Perched Water Site Assessment Report: 9209 Sharon Street” (report) dated January 13, 2020 by NORTECH, Inc. (NORTECH). The documented field work was conducted in October 3, 2019 and generally consisted of advancing four soil borings and completing one boring as a groundwater sampling well. Proposed activities for the 9209 Sharon Street Property in 2020 include collecting a groundwater sample for laboratory analysis of DRO. ADEC approves this proposed groundwater sample collection for laboratory analysis in 2020 and recommends the sample be collected in spring 2020. Amy Rodman
10/13/2022 Meeting or Teleconference Held Teleconference with consultant Nortech to discuss site updates. Nortech is planning on returning to the property in the spring for another round of groundwater sampling. Will submit a workplan in the spring 2023. Flannery Ballard

Contaminant Information

Name Level Description Media Comments

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Description Details

No associated sites were found.

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
Physical Location: 410 Willoughby