1120 SW 5th Avenue, Room 1000, Portland, OR 97204
These sites are located along the Willamette River along the eastern edge of the subwatershed.
ACF Industries, 5.98 acres, ID#794, 12160 NW St. Helens Rd., status is remedial investigation
Railroad tank cars were rinsed out at this site. Discharge of wastewater to the ground, particularly to a nearby wetland, and leaking underground settling tanks occurred from 1965-1980. In February 1991 6,800 cubic yards of soil were removed. Hazard substances include petroleum hydrocarbons, phenols, oil and grease, possible halogenated organic contaminants such as PCBs, PCP, and other chlorinated SVOCs, chlorinated pesticides or herbicides. Soil and groundwater sampling was completed in October and November 2001. Results are expected in early 2002.
PGE-Harborton Substation, 79.38 acres, ID# 2353, 12500 NW Marina Way, status is remedial investigation
An industrial site used for electrical power regulation and transmission, electrical component storage (PCB-containing devices), general equipment storage, treated wood pole storage, and formerly for power generation (principally with natural gas and No. 2 diesel fuel). The site is generally flat, and surrounded on three sides by wetland areas and the Willamette River. A perimeter berm was constructed to prevent runoff from the developed portion of the site from discharging into the surrounding wetlands. Specific manner and time of release is unclear; however, diesel fuel release and oil spills on uplands portion of site. Possible TPH and/or PAH releases at former gas turbine operating area. Diesel fuel has been reportedly released to the site's southwestern wetlands area. TPH and PAHs have been detected in soil and/or groundwater at the site. It does not appear PGE Harborton is a current or historic source of contaminants to the river.
Linnton Oil Fire Training Ground, ID#1189, NW Marina Way, status is operation and maintenance.
High levels of petroleum contamination have been detected at the site. Significant contamination exists in the main training area, the drainage ditch and the two ponds. Diesel, heavy oil and gasoline-range hydrocarbons have been detected in soil samples. TPH concentrations of up to 26,000 mg/L have been detected in soil. Up to 550 ug/L of benzene has been detected in groundwater. Chlorinated solvents, arsenic, and PAHs have also been detected in groundwater at the site above DEQ standards. As of April 2000, groundwater monitoring is being conducted and a deed restriction for site institutional controls is being negotiated with the City and BPA.
Georgia-Pacific-Linnton Fiber Terminal, 21.51 acres, ID# 2370, 12222 NW Marina Rd., status is closeout activities on completed project.
The G-P site is fully fenced and mostly paved, and located along the western bank of the Willamette River. BN-SF railroad tracks and a former ACF railcar repair facility (ECSI #794) are along the site's western boundary. A wetlands area and the former Linnton Oil Fire Training Grounds (ECSI #1189) are along the site's northern boundary. The PGE Harborton electrical substation site (ECSI #2353) is further to the north. The Owens-Corning/Trumbull Asphalt facility is along the site's southern boundary. Weston sampling results from the Portland Harbor Sediment Study revealed elevated concentrations of thallium, PAHs, arsenic and iron in river sediments at the downstream end of the G-P dock, and elevated concentrations of thallium, PAHs, mercury, and pentachlorophenol in sediments collected about 340 feet further downstream. Contaminated wash water from the former ACF railcar repair facility located west of the G-P facility is believed to have overflowed onto the northwest corner of the G-P property between 1965 and 1980. Source(s) of river sediment contamination unclear at this time.
Owens Corning-Linnton, 43 acres, ID# 1036, 11444 NW St. Helens Rd., status is expanded preliminary assessment.
The site has been used for different operations, including a wholesale lumberyard, a wood-treating facility, and most recently a planing mill. In 1989, a prospective purchaser hired Century West Engineering to investigate the site. Century West found stained soils, uncharacterized drums, and a gasoline UST. Investigations continued into 1990. The underground tank was removed, and petroleum contaminated soils were aerated on-site. A monitoring well installed up gradient of the tank excavation showed petroleum in groundwater, including up to 150 ppb benzene. The contamination was believed to originate from the adjacent GATX facility. (See ECSI #1096 for more information.) The stained soils and wood-treating areas had high levels of TPH and moderate levels of metals and PCP, but the contamination was spatially limited. (The drums were apparently removed by the site owner, Owens-Corning Fiberglass.) As of June 1999 Weston sampling results from the Portland Habor Sediment Study revealed arsenic, thallium, dioctylphthalates, DDT, PAHs, and methylnaphthalene in river sediments adjacent to the site.
Olympic Pipeline Company, ID#2374, 11400 NW St. Helens Rd. (from RM 3.5 to RM 7.9), status is site screening recommended.
Historic petroleum leaks reported. Olympic Pipeline operates three delivery facilities with above ground structures (valves, tanks, etc.) in the Portland area. Based on initial sampling results from a river sediment quality study, Olympic Pipe Line Company's petroleum pipeline has been identified as a potential source of contamination to the Portland Harbor. A Site Assessment Review Notice was sent on March 5, 1999. A response from Olympic Pipe Line Co. is expected in June 1999. A site screening is scheduled (level II priority).
GATX St. Helens Rd. Facility/Kinder Morgan Liquid Terminals, 15.97 acres, ID# 1096, 11400 NW St. Helens Rd., status is remedial investigation.
The GATX Terminal lies at the northeast corner of the community of Linnton, on a narrow strip of land between the Willamette River and the Portland Hills. The site has 34 tanks with a total storage capacity of about 20 million gallons. The largest and oldest tanks were installed in 1918, and the newest in 1955. GATX is a bulk-oil storage facility located along the west bank of the Willamette River in Portland. The 15.9-acre site has been operated as a petroleum storage, transfer and terminal facility since 1903. In March 1990, benzene and xylenes were detected in MW-1, a monitoring well located on the adjacent Linnton Planing Mill site, 30 feet north of the GATX property. This well was installed as part of a leaking underground storage tank (LUST) investigation conducted on the Linnton Planing Mill site and was located 50-75 feet upgradient of the tank excavation. Water collected from this excavation revealed BTEX constituents. However, since MW-1 was located hydraulically upgradient of the tank excavation, DEQ recommended sampling to determine if GATX was the source of contamination in MW-1. Continued sampling of MW-1 indicated a dramatic decline in contaminant levels, coinciding with the removal of the LUST. It is not clear if this contamination is a result of a tank release or potential releases at the GATX facility. (10/11/99 SMF) Oil was observed seeping to the river from the GATX facility in 1982, 1994, and 1995. Petroleum discharges to the river were reported after a 1994 diesel pipeline leak. Subsequent subsurface investigations at the site have encountered free petroleum on site groundwater. Groundwater has been contaminated with gasoline, diesel fuel, BTEX, MTBE, chlorobenzene, and various dichlorobenzenes. River sediments at the GATX facility are contaminated with substances similar to those that have been handled at GATX. Specific hazardous substances include: Benzene, xylenes, toluene, ethylbenzene, gasoline, diesel fuel, MTBE, chlorobenzene, dichlorobenzenes. Willamette River sediments: carbazole, bis(2-ethyl-hexyl)phthalate, thallium, dibenzofuran, p-cresol, antimony, barium, and other metals.
West Coast Adhesive Co, 10.73 acres, Site ID# 333, 11104 NW Front Ave., status is remedial action recommended.
DEQ investigated a complaint concerning odors and red substance on the ground after a spill occurred in 1986. In 1990, after West Coast Adhesives (WCA) discontinued operations and dismantled its tanks and other site structures, Glacier Park Company and Burlington Northern initiated surface and subsurface investigations on the property, including the northern portion where WCA had operated. The investigation on the WCA site consisted of six test pits/ trenches and four monitoring wells. High levels of formaldehyde and phenolic resins were found in soil, leading to the contractor's recommendation to remove up to 1,250 cubic yards of soil from this area. The contractor also found formaldehyde in at least one monitoring well. More recent sampling results (1/94) showed much lower levels of formaldehyde and phenols in subsurface soils, and a corresponding decrease in groundwater concentrations of formaldehyde. Other environmental concerns identified at the Burlington Northern site as a whole include a small area where an oily sludge was dumped, and three other areas containing stockpiles of sandblast grit. TCLP analyses of the sandblast material showed no detectable concentrations of cadmium, chromium, or lead. Specific hazardous substances include phenol, formaldehydes, oil-range hydrocarbons.
RK Storage and Warehousing, Site ID# 2376, 10225 NW Front Ave., status is state basic preliminary assessment.
Weston sampling results from the Portland Harbor Sediment Study revealed thallium in river sediments adjacent to the site. Documented on-site contamination has included formaldehyde, phenolics, and petroleum; thallium was found at elevated levels in river sediments near the site.
Babcock Land Company, 1.9 acres, Site ID# 2361, 9933 NW 107th Ave., status is state basic preliminary assessment.
Based on initial sampling results from a river sediment quality study, the Babcock Land Company property has been identified as a potential source of contamination to the Portland Harbor. A Site Assessment Review Notice was sent on March 8, 1999. Response from Babcock Land Company was received on April 16, 1999. A site screening is scheduled (level II priority). (10/8/99 TG/SAP) Strategy Recommendation for medium priority Preliminary Assessment. Slightly elevated antimony and di-n-octyl phthalate concentrations in adjacent sediments do not correlate with site activities. Site characterization and remedial activities conducted in 1990 - 1997 for Burlington Northern Railroad showed negligible contamination in a foundry sand pile. The pile was disposed of at an off-site landfill.
Columbia River Sand and Gravel, 25.48 acres, Site ID# 2351, 10504 NW St. Helens Rd., status is site screening is recommended.
Site included in Strategy Recommendation for Linnton Plywood Association (property owner) SEE ECSI #2373.
Mobil Oil Terminal, 24.23 acres, Site ID# 137, 9420 NW St. Helens Rd., status is remedial action.
The facility has been used for bulk storage and dispensing of fuel oils, gasolines, and diesel fuels since 1928. Prior to 1970, petroleum sludges from above-ground storage tanks were discharged onto the ground during periodic tank cleanings. In the late 1960s, petroleum sheens began to appear on the surface of the Willamette River adjacent to the site. Mobil has tried to control the release by constructing a slurry wall along the riverbank. In March 1985, 46,116 gallons of petroleum were spilled at the site. All but 11,004 gallons were recovered. Mobil entered DEQ's Voluntary Cleanup program in January 1992. Manner and Time of Release: Periodic discharging of petroleum sludges to ground from 1928 to 1970. Spill on March 10, 1985; possibly other spills.
Time Oil Linnton Terminal, 9 acres, Site ID# 1989, 9400 NW St. Helens Rd., status is state basic preliminary assessment.
In September 1988, approximately 1,000 gal. of gasoline spilled from an overfilled above-ground storage tank. Most product remained within the diked area around the tank farm, but penetrated into the ground. Some soil removal occurred, and Time Oil installed monitoring wells outside of the diked area in 1989. Another gasoline release occurred in July 1992, this time 250 gal., also within the containment area. Following soil removal, a boring to a depth of 16 feet showed gasoline concentrations in subsurface soil at up to 9,000 ppm. Groundwater monitoring in 1994 and 1995 showed BTEX levels declining with time, as well as TPH in the gasoline/diesel range. (GMW 6/5/97) Recent groundwater monitoring data show BTEX at non-detect levels, or at levels below MCLs in all wells. Additionally, based on non-detect BTEX and TPH results from vapor samples extracted from this spill area between 3/97 and 5/97, it appears that residual soil contamination may not be significant. Further soil sampling would be needed to confirm this. (11/18/99 TG/SAP) Weston sampling results from the Portland Harbor Sediment Study revealed thallium, PAHs, and butylbenzylphthalate in river sediments. Specific hazardous substances include Gasoline and other petroleum hydrocarbons, including BTEX on-site. In adjacent Willamette River sediments: thallium, butylbenzylphthalate, and PAHs.
Foss Maritime/Brix Maritime, 4.46 acres, Site ID# 2364, 9030 NW St. Helens Rd., status is remedial investigation.
Weston sampling results from the Portland Harbor Sediment Study revealed PAHs, thallium and butylbenzylphthalate in river sediments adjacent to the site. (11/20/01 RGS/VCP) Soil and groundwater sampling performed during the Preliminary Assessment indicated the presence of TPH, benzene, ethylbenzene, xylenes, naphthalene, PAHs, and 1,2,4-trimethylbenzene on-site. (12/23/02 RGS/VCP) A pre-remedial investigation was initiated in summer 2002. The monitoring wells were installed. NAPL was observed in one well. Additional wells will be installed.
Hendren Tow Boats, Site ID# 2389, 8444 NW St. Helens Rd., status is expanded preliminary assessment.
No details are available.
US Army Corps of Engineers - Portland Mooring, 13.4 acres, Site ID# 1641, 8010 NW St. Helens Rd., status is refer to program.
The site has been in operation since 1904, serving as a maintenance port for Corps of Engineers vessels. Contamination of Willamette River sediments has occurred partly as a result of site activities such as vessel maintenance (sandblasting, scaling, repair and painting, for example), and spills from vessels in dock and from refueling operations. Some of the sediment contamination may have resulted from migration from upstream sites such as Elf-Atochem, Rhone-Poulenc, Gould, and Gasco. In any case, Willamette River sediment sampling between 1988 and 1994 has shown elevated levels of PAHs, pesticides, and metals, including tributyl tin. Sediment contamination at the upstream end of the site was significant enough that the Corps abandoned plans to dredge this area. Specific hazardous substances include Petroleum hydrocarbons, PAHs, PCBs, and metals, including tributyl tin.
GASCO, 35 acres, Site ID# 84, 7900 NW St. Helens Rd., status is remedial investigation.
Portland Gas and Coke Company (GASCO) apparently purchased the site in the 1880s, and built a gasification plant by 1913. All waste products from the gasification operations were discharged directly to the Willamette River until 1925. After 1925, tars were separated from the wastewater in settling ponds. When the plant was shut down in 1956 by GASCO's successor company, Northwest Natural Gas (NWNG), an estimated 30,000 cubic yards of coal tar had accumulated in the ponds. The ponds were buried under 10 feet of fill in 1973. Part of the site was then sold to Wacker Siltronic Corporation (see ECSI #183). Koppers Company leased an 8-acre portion of the site from NWNG in 1965 and built a coal-tar distillation plant. Waste streams of creosote and pitch were cooled and solidified in storage tanks, and apparently dumped into an on-site disposal pit. (The plant shut down in 1973 and has only been used for the bulk transfer of creosote oil and coal tar pitch since 1977). In December 1993, NWNG signed up for DEQ's Voluntary Cleanup Program. In August 1994, NWNG signed an agreement with DEQ to conduct a Remedial Investigation and Feasibility Study (RI/FS) at the site. An RI/FS workplan was submitted to DEQ in January 1995 and approved in August 1995. Wastewater from tar stills and unusable petroleum by-products were discharged to the Willamette River, farmed on portion of site, or disposed of in settling ponds on-site. Lampblack and spent iron oxide waste stored in large on-site waste piles. Time of release: 1913 to 1977. Specific hazardous substances include tars, oil, creosote, phenols, polynuclear aromatic hydrocarbons, BTEX and lead.