State of Oregon: Department of Environmental Quality

This report shows data entered as of October 3, 2023 at 8:03:02 AM

This report contains site details, organized into the following sections: 1) Site Photos (appears only if the site has photos); 2) General Site Information; 3) Site Characteristics; 4) Substance Contamination Information; 5) Investigative, Remedial and Administrative Actions; and 6) Site Environmental Controls (i.e., institutional or engineering controls; appears only if DEQ has applied one or more such controls to the site). A key to certain acronyms and terms used in the report appears at the bottom of the page.

Note: DEQ may have posted online documents related to this site. If so, they would be available for viewing or downloading on ECSI Summary Page

Go to DEQ's Facility Profiler to see a site map as well is information on what other DEQ programs may be active at this site.

Environmental Cleanup Site Information (ECSI) Database Site Summary Report - Details for Site ID 1723, Eugene Manufactured Gas Plant (Former)

Site Photos
Click to View Photo	Picture Date	Caption	Size
View Photo	08/30/2019	Site Location	214 Kb
View Photo	08/30/2019	EWEB MGP Cleanup Site Map	95 Kb
View Photo	09/05/2019	Site Remediation Fact Sheet, Page 1	449 Kb
View Photo	09/05/2019	Site Remediation Fact Sheet, Page 2	140 Kb

General Site Information

Site ID: 1723

Site Name: Eugene Manufactured Gas Plant (Former)

CERCLIS No:

Address:

700 block of E 8th Ave. (north of 8th) Eugene 97401

County: Lane

Region: Western

Other location information:

Investigation Status:

Listed on CRL or Inventory

Brownfield Site: No

NPL Site: No

Orphan Site: No

Study Area: No

Property:

Twnshp/Range/Sect: 17S , 3W , 32

Tax Lots:

Latitude: 44.0518 deg.

Longitude: -123.0824 deg.

Site Size: 1.5 acres

Other Site Names:


	Eugene Water and Electric Board - MGP
	EWEB Manufactured Gas Plant

Site Characteristics
General Site Description:
Site History:
Contamination Information:	(7/26/95 KNA/SAS) Information gathered during cleanup/investigation at the U of Oregon Riverfront Research Park (ECSI #1018) suggested the presence of contamination in soils at the EWEB former MGP. This was confirmed when EWEB provided DEQ a copy of a work plan that included site sampling data. The EWEB document indicated that petroleum products, metals, and PAHs were present in soils. It is believed that the contamination resulted from past operations at the MGP. Spring 1998 groundwater investigation confirmed on-site NAPL and contaminated groundwater downgradient from the site. (11/9/99 M5M/VCS) Summer 1999 investigation of underground structures confirms presence of tar waste in abandoned tar tank.
Manner and Time of Release:	Past practices associated with the manufactured gas plant.
Hazardous Substances/Waste Types:	PAHs, metals, and petroleum products
Pathways:
Environmental/Health Threats:	Soil and groundwater impact identified.
Status of Investigative or Remedial Action:	(7/17/96 MJM/VCS) EWEB joined VCP in February 1996 in an effort to address on-site contamination at the site. Currently negotiating an intergovernmental agreement and scope of work with EWEB. (7/6/98 M5M/VCS) EWEB completed an independent assessment of site groundwater conditions in 5/98 including the installation and sampling of five monitoring wells. (11/13/98 M5M/VCS) EWEB has proposed a source area investigation. (2/10/99 M5M/VCS) Intergovernmental Agreement signed 11/25/98. Phase I Remedial Investigation Work Plan received 12/98, approved 1/99. EWEB preparing to investigate source areas on-site. (11/9/99 M5M/VCS) Source investigation identified liquid tar waste present in abandoned tar tank. Removal completed 11/99. (3/28/00 M5M/VCS) Draft Beneficial Use Report submitted and received in March 2000. (6/29/00 M5M/VCS) Comments on draft beneficial use report made in April 2000. Draft Phase 1 RI Report submitted in June 2000. (9/25/00 M5M/VCS) Comments on Draft Phase 1 RI Report made in September 2000. (12/19/00 M5M/VCS) Response to RI comments received and reviewed in December 2000. (10/3/01 ALS/VCS) Risk Assessment work plan is to be submitted in October 2001. Groundwater monitoring is being conducted on semi-annual basis to monitor site conditions. DEQ approved the Human Health Risk Assessment, Ecological Risk Assessment and the RI. EWEB is currently preparing the Feasibility Study for soils at the site. Remedial alternatives include no action, engineering and institutional controls, limited soil removal with engineering and institutional controls, and excavating a large portion of the site to the depth of groundwater. EWEB is currently incorporating changes to their Draft Focused Feasibility Study recommended by the DEQ in 1/05. (2/15/05 - GCB) (07/21/14 SJS/VCS) A staff report has been prepared recommending remedial action. This recommendation will be presented fro public comment in September of 2014. (01/27/15 SJS/VCP) RODs have been approved for the main portion of the site and for the Cul-deSac area. The recommended remedial action includes:Excavation and off-site disposal of high-concentration residuals/waste at the first gas plant structure and the small relief holder; assessment and removal for similar residuals/waste from the vaults at the large gas holder; Engineering controls consisting of (1) a cap and (2) bank stabilization action; Institutional controls consisting of an Easement & Equitable Servitude restricting property use, and development of a site management plan (SMP); Inspection and maintenance of the Site conditions and features according to the SMP. (7/25/2016 cjr) Preliminary Bank Stabilization Design submitted for comments; Upland remedial design (90%) approved March 2016. (8/31/2017 cjb) 90% Upland Removal design plan submitted April 2017, comments sent 8/25 (no changes); 90% Bank Stabilization plan submitted June 2017, engineer review completed (no significant changes). Approval for final design on bank stabilization provided 8/31/2017. (5/29/20 DEH) EWEB completed the upland and shorline remedial actions required under the RODs in fall of 2019. In May 2020 the Site Management PLan was prepared and approved by DEQ
Data Sources:	(1) Initial Site Investigation Work Plan, Former Manufactured Gas Plant Site, Eugene, Oregon, 7/95, prepared by PTI Environmental Services. (2) Initial Site Investigation Report, Former MGP Site, Eugene, Oregon, 2/96, prepared by PTI. (3) Results from Focused Groundwater Investigation, Eugene Former MGP Site, 8/98, prepared by Exponent. (4) Phase I Remedial Investigation Work Plan, Former MGP Site, Eugene, Oregon, 11/98, prepared by Exponent (5) Draft Phase 1 Remedial Investigation Report, 6/00, prepared by Exponent. (6) Final Phase 1 Remedial Investigation Report, 12/00, prepared by Exponent.

Substance Contamination Information
Substance	Media Contaminated	Concentration Level	Date Recorded
BENZO(a)ANTHRACENE	Soil	Max conc. to date: 220mg/kg
BENZO(a)PYRENE	Soil	Max Conc. to date: 210 mg/kg
CHRYSENE	Soil	Max conc. to date: 210 mg/kg
CHRYSENE	Soil	Max conc. to date: 210 mg/kg

Investigative, Remedial and Administrative Actions
Action	Start Date	Compl. Date	Resp. Staff	Lead Pgm
Institutional Control (Primary Action)	08/06/2020	08/06/2020	Donald Hanson
View Full Report Showing Action History

Site Environmental Controls
Control Description	Begin Date	End Date	Last Reviewed By	Last Review Date
Easement Equitable Servitude	08/06/2020		Don Hanson	08/06/2020
	Comments: EES restricts/requires the following: - Restricts groundwater use (no groundwater use) - Requires inspection and maintenance of asphalt cap per the Site Management Plan - Requires shoreline maintenance and inspection per the Site Management Plan - Restricts residential use of any type (No residential use) - Buildings meant for human occupancy except if additional assessment is conducted, and with DEQ approval.
Cap, non-engineered	08/06/2020		Don Hanson	08/06/2020
	Comments: EES recorded 8/6/2020 stipulates: Except upon prior written approval from DEQ, Owner may not conduct or allow operations or conditions on the Property or use of the Property in any way that might penetrate the cap or associated appurtenances currently in place over the upland portion of the Property or jeopardize the cap's protective function as an engineering control that prevents exposure to contaminated soil, including without limitation any excavation, drilling, scraping, or uncontrolled erosion. Associated appurtenances may include concrete paving, geomembrane-lined facilities, and other DEQ-approved protective covers over contamination. Owner will maintain the cap and any associated appurtenances to the cap in accordance with the Site Management Plan approved in writing by DEQ on June 24, 2020, along with any future changes to the Site Management Plan approved by DEQ.
Contamination left in place, Soil	08/06/2020		Don Hanson	08/06/2020
	Comments: EES recorded 8/6/2020 stipulates: Except upon prior written approval from DEQ, Owner may not conduct or allow operations or conditions on the Property or use of the Property in any way that might penetrate the cap or associated appurtenances currently in place over the upland portion of the Property or jeopardize the cap's protective function as an engineering control that prevents exposure to contaminated soil, including without limitation any excavation, drilling, scraping, or uncontrolled erosion. Associated appurtenances may include concrete paving, geomembrane-lined facilities, and other DEQ-approved protective covers over contamination. Owner will maintain the cap and any associated appurtenances to the cap in accordance with the Site Management Plan approved in writing by DEQ on June 24, 2020, along with any future changes to the Site Management Plan approved by DEQ.
Periodic montioring & reporting, other categories	08/06/2020		Don Hanson	08/06/2020
	Comments: Shoreline inspectino and maintenance. EES recorded 8/6/2020 stipulates: Owner shall conduct shoreline inspections, bank stabilization measures, and reporting, as prescribed in the DEQ-approved Site Management Plan

Key to Certain Acronyms and Terms in this Report:

CERCLIS No.: The U.S. EPA's Hazardous Waste Site identification number, shown only if EPA has been involved at the site.
Region: DEQ divides the state into three regions, Eastern, Northwest, and Western; the regional office shown is responsible for site investigation/cleanup.
NPL Site: Is this site on EPA's National Priority List (i.e., a federal Superfund site)? (Y/N).
Orphan Site: Has DEQ's Orphan Program been active at this site? (Y/N). The Orphan Program uses state funds to clean up high-priority sites where owners and operators responsible for the contamination are absent, or are unable or unwilling to use their own resources for cleanup.
Study Area: Is this site a Study Area? (Y/N). Study Areas are groupings of individual ECSI sites that may be contributing to a larger, area-wide problem. ECSI assigns unique Site ID numbers to both individual sites and to Study Areas.
Pathways: A description of human or environmental resources that site contamination could affect.
Lead Pgm: This column refers to the Cleanup Program affiliation of the DEQ employee responsible for the action shown. SAS or SAP = Site Assessment; VCS or VCP = Voluntary Cleanup; ICP = Independent Cleanup; SRS or SRP = Site Response (enforcement cleanup); ORP = Orphan Program.

You may be able to obtain more information about this site by contacting Donald Hanson at the Western regional office or via email at don.hanson@deq.oregon.gov. If this does not work, you may contact Ximena Cruz Cuevas (503) 229-6811, or via email at ximena.cruzcuevas@deq.state.or.us or contact the Western regional office.