| Action Date |
Action |
Description |
DEC Staff |
| 5/13/2004 |
Offsite Soil or Groundwater Disposal Approved |
ADEC received a release notification and request by Shannon & Wilson to transport an estimated 1,280 cubic yards of DRO-impacted soil to Alaska Soil Recycling (ASR) in Anchorage for thermal remediation. The release notification stated that contaminated soil had been excavated and stockpiled by Davis Contractors and sampled by Shannon & Wilson in November 2003 with results of 9,000 mg/kg DRO in the sample collected from the stockpile. The stockpile was not thermally remediated at ASR; instead it was combined later with soil excavated in May 2004 for a total estimated volume of 1,500 stockpiled at the site, and with an additional estimated 8,500 cubic yards of soil approved for treatment by landfarming at a site on Trunk Road in Palmer. |
Eileen Olson |
| 5/17/2004 |
Potentially Responsible Party/State Interest Letter |
ADEC letter with cost recovery notification and request for copies of reports or other documentation relating to contaminant releases or sources at the property that have not been previously submitted to the Department. Letter subject is "Petroleum hydrocarbon contamination at Eureka Street parcel north of 3900 C Street" etc. Contamination is apparently associated with a past heating oil system that served mobile homes and was discovered during excavation for installation of a water line. |
Eileen Olson |
| 5/17/2004 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 74974 name: Underground heating oil tanks & piping |
Eileen Olson |
| 5/19/2004 |
Document, Report, or Work plan Review - other |
ADEC received and approved a work plan titled "Impacted Soil Segregation, American Landscaping, Lang Road, Anchorage, Alaska". Several thousand cubic yards of geotechnically unsuitable material from the Centerpoint site were transported to American Landscaping in fall 2003 for storage over the winter. The soil was found to be contaminated when soil processing by the landscaping firm began in spring 2004, when a customer who received a home delivery of soil from American Landscaping complained that the soil was contaminated. The plan describes proposed soil screening and segregation activities for identifying and removing impacted soil from the American Landscaping property. |
Eileen Olson |
| 5/20/2004 |
Site Visit |
Site visit to American Landscaping during sampling by Shannon & Wilson. |
Eileen Olson |
| 5/26/2004 |
Update or Other Action |
On May 21, 24 26 and 28 ADEC received laboratory results packages for soil sampling of potentially impacted soil at American Landscaping. |
Eileen Olson |
| 6/17/2004 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approved an initial plan dated June 17, 2004 to transport soil excavated from Centerpoint site to Trunk Road parcel for landspreading. Recommended notification of any nearby neighbors. Required visual monitoring of soil to ensure no excess stormwater runoff or fugitive dust. |
Eileen Olson |
| 7/16/2004 |
Document, Report, or Work plan Review - other |
ADEC issued a conditional approval letter for landfarming of diesel-contaminated soil on a property on Trunk Road in Palmer owned by a subsidiary (Trunk Road Investors) of the company (JL Properties) that owns the construction site and former mobile home park where the contaminated soil originated. |
Eileen Olson |
| 7/16/2004 |
Offsite Soil or Groundwater Disposal Approved |
Approximately 10,000 cubic yards of DRO-contaminated soil from this site will be remediated by landfarming at a site in Palmer. |
Eileen Olson |
| 9/13/2004 |
Update or Other Action |
Received report titled "Impacted Soil Segregation, American Landscaping, Lang Street, Anchorage, Alaska" prepared by S&W. The report documents soil sampling and segregation activities at the landscaping firm's business south of O'Malley Road that received ~8,500 cy (729 truckloads) of soil excavated from the Centerpoint subdivision property. Following the sampling and segregation activities an initial approximately 2,900 cubic yards of DRO-impacted soil were transported to a Trunk Rd. site in Palmer for remediation by landspreading. (The report does not include sampling of stockpiled soil at the originating former mobile home park site). |
Eileen Olson |
| 10/1/2004 |
Document, Report, or Work plan Review - other |
ADEC received a report for contaminated soil that was delivered to a residence titled "Soil Sampling, 300 Vila Circle, Anchorage, Alaska" dated July 19, 2004 and prepared by Shannon & Wilson. The report states that on May 17, 2004 Shannon & Wilson was notified by Davis Constructors that contaminated soil was delivered to American Landscaping, then sold to Jim's Topsoil and ordered by a homeowner from Jim's, with the result that 4 cy of contaminated soil was delivered to a residential property on Vila Circle. The soil was field screened and an analytical sample taken before being returned to the Centerpoint site; the result was 344 mg/kg DRO. Confirmation field screening and sampling was done at the location where the contaminated soil was removed, with a single analytical sample containing 232 mg/kg DRO, of which all but 76 mg/kg was determined to be biogenic. |
Eileen Olson |
| 10/27/2004 |
Update or Other Action |
ADEC received "Remediation Report, Trunk Road Landfarm Site, Palmer Alaska" dated October 2004. Report describes soil remediated at the Palmer location including ~1,500 CY of soil from the Centerpoint site that was excavated, stockpiled and sampled in fall 2003 and spring 2004; 2,900 CY of DRO-impacted soil that was segregated from a total volume of ~8,000 CY that were transported to American Landscaping's yard in fall 2003. Later additional soil from American Landscaping and the originating site was transported to the Palmer location for a total estimated quantity of 10,000 cubic yards. |
Eileen Olson |
| 3/3/2005 |
Site Added to Database |
DRO |
Sarah Cunningham |
| 3/3/2005 |
GIS Position Updated |
TopoZone Pro. NAD27 |
Sarah Cunningham |
| 5/9/2005 |
Document, Report, or Work plan Review - other |
ADEC determined that landfarmed soil at the Trunk Road property in Palmer has met the cleanup level based on a review of chromatograms received this date for final sampling. Chromatograms were reviewed by ADEC Chemist Earl Crapps who determined that the soil has a biogenic component and has met the DRO cleanup level. |
Eileen Olson |
| 5/11/2005 |
Document, Report, or Work plan Review - other |
ADEC review letter with subject line "Request for workplan to complete characterization of Eureka Street parcel north of 3900 C Street and Review of Remediation Report, Trunk Road Landfarm Site, Palmer, Alaska'” dated October 2004. The letter granted no further remedial action status for landfarmed soil at the Trunk Road property in Palmer with the condition that ADEC be notified of offsite transport of the soil. |
Eileen Olson |
| 6/15/2005 |
Document, Report, or Work plan Review - other |
ADEC letter conditionally approving a site characterization workplan dated 6/14/2005, received 6/15/2005, that proposes installation of three monitoring wells and soil sampling. ADEC's letter acknowledges that investigation is necessarily limited by the structures and buried utilities on the property but notes that it is not clear that the locations of the wells are optimal or sufficient in number in terms of characterizing the remaining contamination at the site, so that the Department may require further characterization depending on the results of the planned work and on a review of the contaminant source areas. ADEC also requested that a soil sample be collected at the soil-groundwater interface in each of the three monitoring wells. |
Eileen Olson |
| 8/10/2007 |
Update or Other Action |
ADEC letter requesting completion of site characterization according to approved work plan. |
Eileen Olson |
| 8/16/2007 |
Document, Report, or Work plan Review - other |
ADEC received and approved a request by the RP's consultant to extend the work completion deadline from the requested Sept. 30, 2007 deadline until October 31, 2007. |
Eileen Olson |
| 9/17/2007 |
Update or Other Action |
ETM ranking. |
Eileen Olson |
| 1/14/2008 |
Update or Other Action |
ADEC received notification from Alaska Soil Recycling that ASR received 3 - 55 gallon drums of contaminated soil from the Centerpoint site. Ltr requests closure letter by ADEC on behalf of the RP with respect to the soils since the soil will be co-mngled with soils of similar contaminants under ASR's agreement w/ADEC. |
Eileen Olson |
| 2/22/2008 |
Offsite Soil or Groundwater Disposal Approved |
Approved thermal treatment of 3-55 gallon drums of investigation derived waste (IDW) delivered to ASR. All responsibility for contaminated soil transferred to ASR according to ASR's approved facility operations plan, so no further action or documentation by the responsible party is required with respect to the IDW. |
Eileen Olson |
| 4/3/2008 |
Update or Other Action |
ADEC received a report "Site Characterization, Tract B...February 1, 2008" that reported the installation of three borings completed as monitoring wells in a landscaped area of the site. Groundwater samples were collected from each well, and one soil sample was collected from each boring for DRO and BTEX analysis. The October 19, 2007 groundwater results for the three wells, placed approximately 150 feet apart in the shape of a triangle documented minor groundwater contamination not exceeding 18 AAC 75.345 cleanup levels (e.g., containing 0.562, 0.679 and 1.29 mg/L DRO respectively for B1MW, B2MW and B3MW; and the wells were non-detect for BTEX with the exception of xylenes, which were detected below the cleanup level in B1MW and B3MW). Soil sample results for the sample containing the highest concentration of DRO in groundwater, B3MW, had detectable xylenes and non-detectable DRO, but the DRO detection limit was over 1,000 mg/kg so that DRO concentrations in soil may have exceeded cleanup levels for that sample. |
Eileen Olson |
| 5/20/2008 |
Document, Report, or Work plan Review - other |
ADEC issued a review letter for the site characterization report received April 3, 2008. The letter requests a plan to complete site characterization and requests that the next groundwater event take place within 45 days after receipt of the letter. ADEC’s letter also notes that the locations of the excavations for the approximately 10,000 cubic yards of contaminated soil excavated from the site that were landfarmed at the Trunk Road property in Palmer have not been provided to ADEC, nor have the results of excavation confirmation sampling, if any, been reported to ADEC. The letter further requests that the requested plan include figures showing the locations of the existing wells, past excavations of contaminated soil, and the former locations of fuel storage tanks or systems. The letter also referenced and reiterated the statement in ADEC's letter dated June 15, 2005 that the information was required to determine whether the proposed wells were optimally located or sufficient in number to characterize the remaining contamination. |
Eileen Olson |
| 5/20/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Eileen Olson |
| 6/11/2008 |
Document, Report, or Work plan Review - other |
Following a telephone conversation this date, approved the consultant's request to extend the deadline from June 29 to July 29, 2008 for conducting the first quarterly monitoring event at the site based on the difficulty of obtaining information on the extents of excavations at the site. |
Eileen Olson |
| 7/18/2008 |
Update or Other Action |
Received "Work Plan for Conducting 2008-2009 Quarterly Groundwater Monitoring, Tract B, Centerpoint Subdivision" proposing four quarterly monitoring events with the first event to be conducted August 1, 2008. |
Eileen Olson |
| 8/1/2008 |
Document, Report, or Work plan Review - other |
ADEC email to consultant re non-objection to proceeding with groundwater sampling but noting the plan does not address ADEC's requests in letters dated May 20, 2008 and June 15, 2005 regarding the need for locations where contaminated media was excavated and where samples were collected. Email response same date from consultant that additional characterization will be done under a different work plan, and that consultant possesses a drawing with hand-drawn, approximate boundaries of excavation that was done when new water main and other utilities were installed. |
Eileen Olson |
| 8/5/2008 |
Update or Other Action |
ADEC letter sent requesting site characterization work plan by Sept. 15, 2008 with work to begin by Oct. 8, 2008, and conditionally approving groundwater monitoring plan for existing monitoring wells, with possible changes to the schedule following additional site characterization.
|
Eileen Olson |
| 9/17/2008 |
Update or Other Action |
ADEC received "Work Plan to Conduct Limited Phase II Environmental Site Assessment, Tract B, Centerpoint Subdivision, Anchorage" dated September 12, 2008. The proposed field activities include only soil investigation by drilling up to six borings and collecting soil samples for field screening and chemical testing. For planning purposes the consultant assumed that the six boreholes will be advanced to a depth of 15 feet below ground surface (bgs), or until groundwater is encountered. Groundwater is expected at about 9 feet bgs, based on previous well installations at the site. No groundwater investigation is proposed. Discussion with consultant, require site information repeatedly requested in previous correspondence prior to review. |
Eileen Olson |
| 10/24/2008 |
Update or Other Action |
ADEC received a report titled "First Event: Quarterly Groundwater Monitoring, Tract B, Centerpoint Subdivision". The report documented the sampling of the three wells at the site on October 18, 2007 in accordance with the work plan dated June 15, 2005. The wells were installed in April 2007 and results from sampling at the time of installation are reported in the Shannon & Wilson report received 4/3/2008. Soil and groundwater samples were analyzed for DRO and benzene, toluene, ethylbenzene, and xylenes (BTEX). None of the samples contained concentrations greater than the applicable ADEC cleanup levels listed in 18 AAC 75. Documentation was not provided showing where the borings/monitoring wells were placed relative to all contaminated soil excavations. |
Eileen Olson |
| 3/27/2009 |
Update or Other Action |
Shannon & Wilson staff notified ADEC by email on March 27, 2009 that staff had made two attempts to locate the three monitoring wells at the Centerpoint site but could not locate them, stating “We made another attempt to locate the wells for the first quarter of 2009, but we still could not locate them, either with a magnetometer or with our field notes and swing ties measurements. We believe that the wells were destroyed when another contractor prepared the area for laydown locations prior to commencing construction of new structure on site.” Shannon & Wilson’s email proposed terminating the groundwater monitoring on the site based on the previous monitoring results. Shannon & Wilson staff had initially reported verbally in December 2008 to ADEC that they could not find the monitoring wells. Discussion with consultant re need for information regarding source of excavated 10,000 cy of contaminated soil from the site as it relates to monitoring well locations and site investigation; monitoring wells not shown to be representative of potentially contaminated area particularly with respect to groundwater flow direction. ADEC unable to approve site characterization plan (see 9/17/2008 entry) without requested information, and continued groundwater monitoring question is moot since all wells were apparently destroyed. |
Eileen Olson |
| 9/10/2013 |
Document, Report, or Work plan Review - other |
ADEC letter issued requesting information and site characterization work plan following file review. Information requested includes to scale figure showing the perimeter of the area(s) where petroleum hydrocarbon impacted soil was excavated during JL Properties’ activities on the site prior to 2005; Phase I environmental assessment and any other relevant reports, photographs, field notes and other documentation prepared by environmental consultants or other on-site workers not previously submitted to ADEC; other reports, data and photographs relevant to the environmental status of the site not previously submitted, including records of excavation for structures and utilities at the site (this may include as-builts); information regarding previous site use and former structures and fuel systems at the site, including aerial photographs showing the former mobile home park structures if these are not provided in the Phase I report; and documentation that the three monitoring wells installed on October 19, 2007 and sampled once on August 8, 2008 were decommissioned in accordance with ADEC guidance. Shannon & Wilson reported in an email dated March 27, 2009 that they could not locate the wells and believed they were destroyed during contractor site work.
|
Eileen Olson |
| 10/24/2013 |
Meeting or Teleconference Held |
Staff met with owner and consultant representatives to discuss site history, data gaps and the next steps toward completing characterization with the owner stating that the goal is site closure. The Phase I report requested by ADEC has apparently been lost. Consultant indicated they had no historical information with respect to the prior land use; that is, the type of heating oil system used at the former trailer park and whether or not the park was served by drinking water wells, and if so, have they been decommissioned, etc. Consultant noted that 2 of 3 monitoring wells were located. |
Eileen Olson |
| 3/27/2014 |
Document, Report, or Work plan Review - other |
ADEC letter conditionally approving plan to install and sample three monitoring wells. Plan was received March 24, 2014. |
Eileen Olson |
| 6/27/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 74974 Underground heating oil tanks & piping. |
Eileen Olson |
| 7/1/2014 |
Cleanup Complete Determination Issued |
Cleanup complete status granted with standard conditions and condition that monitoring wells be decommissioned and documentation provided to ADEC of same. |
Eileen Olson |
| 8/11/2014 |
Update or Other Action |
ADEC received a well decommissioning report dated August 7, 2014 by email on Aug. 11, 2014. Decommissioning and notification to ADEC was required by the Cleanup Complete decision document. The report documents the July 9, 2014 decomissioning of five groundwater monitoring wells (B1MW, B3MW, B4MW, B5MW and B6MW) at the site. Shannon & Silson was not able to locate well B2MW during prvious site rec9onnaissance activities including searching with a metal detector and assumed that well was lost. No other monitoring wells remain at the site. |
Eileen Olson |
