Environmental Cleanup Site Information (ECSI) Database
Site Summary Report - Details for Site ID 795, Shadybrook Landfill   

This report shows data entered as of May 24, 2013 at 2:40:58 PM

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.

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.

Site Photos
Click to View Photo	Picture Date	Caption	Size
View Photo	04/18/2013	vegetation on former shooting range	748 Kb
View Photo	04/18/2013	vegetation on former shooting range	758 Kb
View Photo	04/18/2013	vegetation on former shooting range	766 Kb
View Photo	04/18/2013	same	762 Kb
View Photo	04/18/2013	same	751 Kb
View Photo	04/18/2013	vegetated soil pile	755 Kb
View Photo	04/18/2013	new soil cap graded	72 Kb
View Photo	04/18/2013	new graded soil cap	73 Kb
View Photo	04/18/2013	new graded soil cap	64 Kb
View Photo	04/18/2013	same	74 Kb
View Photo	04/18/2013	erosion controls	96 Kb
View Photo	04/18/2013	new graded soil cap	66 Kb
View Photo	04/18/2013	same	66 Kb
View Photo	04/18/2013	same	66 Kb
View Photo	04/18/2013	same	63 Kb
View Photo	04/18/2013	same	97 Kb
View Photo	04/18/2013	same	97 Kb
View Photo	04/18/2013	same	89 Kb
View Photo	04/18/2013	same	93 Kb
View Photo	04/18/2013	same	78 Kb
View Photo	04/18/2013	same	61 Kb
View Photo	04/18/2013	same	45 Kb
View Photo	04/18/2013	same	80 Kb
View Photo	04/18/2013	same	45 Kb
View Photo	04/18/2013	same	44 Kb
View Photo	04/18/2013	same	74 Kb
View Photo	04/18/2013	same	61 Kb
View Photo	04/18/2013	same and Craig Ware	64 Kb
View Photo	04/18/2013	same	61 Kb
View Photo	04/18/2013	same	74 Kb
View Photo	04/18/2013	same	91 Kb
View Photo	04/18/2013	same	77 Kb
View Photo	04/18/2013	same	67 Kb
View Photo	04/18/2013	same	76 Kb
View Photo	04/18/2013	same	85 Kb

General Site Information
Site ID: 795	Site Name: Shadybrook Landfill		CERCLIS No:
Address:	27800 NW Truitt Rd. (approximate address) North Plains 97133
	County: Washington		Region: Northwest
Other location information:	About four miles northeast of North Plains, near the eastern hill crest overlooking McKay Creek drainage. Off Shadybrook Road, near the terminus of Truitt Road.
Investigation Status:	Listed on CRL or Inventory
	Brownfield Site: No	NPL Site: No	Orphan Site: No	Study Area: No
Property:	Twnshp/Range/Sect: 2N , 2W , 29		Tax Lots: 500 and 200 (T2N/R2W-S29)
	Latitude: 45.6343 deg.	Longitude: -122.9561 deg.	Site Size: 40 acres
Other Site Names:	Washington County Landfill

Site Characteristics
General Site Description:
Site History:	Originally an unregulated open burning dump. Later used as Washington County's primary solid waste disposal site. Closed in 1971, then used as a firearm target range until 1988.
Contamination Information:	(5/17/96 SMF/SAS) Shadybrook was a county-owned landfill that operated from 1955 to 1971 (operating as an open dump until 1962). The landfill was unlined, and the landfill surface undulates dramatically. The site has had several fires due to spontaneous combustion, the top layers are collapsing, and there have been odor problems. There have been leachate problems since the landfill was open. "Orange" leachate discharges to Jesus Creek through active seeps in a ravine near the landfill, and from the landfill itself. Orange deposits have been noted as far downstream as Jackson Road. Water quality has been analyzed a number of times, but hazardous constituents have not been characterized. The Washington County Sheriff's Office used the northeast part of the site as a target shooting range from 1971 to 1988. Spent lead bullets are present in surface and shallow subsurface soils in this part of the site. Lead from the bullets may contribute to groundwater contamination. Historic rodenticide application may have contaminated site or Jesus Creek. (11/12/04 AC/SRP) Fire debris buried at site was from a farm supply business and may have contained bulk pesticides. Fire debris generally contains elevated PAHs.
Manner and Time of Release:	Leachate originating from unlined sanitary landfill and spent lead bullets. Time of release: 1953 to present.
Hazardous Substances/Waste Types:	Unknown - county landfill. Spent lead bullets on soil surface, and in shallow subsurface soils near northeast end of site - bullets contain leachable lead. Lead also detected in groundwater discharging to Jesus Creek from off-site seeps. Also, a sizeable rat population at the landfill was completely eliminated and did not return following the county’s rodenticide application during the winter of 1962. It is not known which rodenticide was used, although its apparent effectiveness suggests the product was highly toxic, persistent, and widely applied. There is concern that residual rodenticide may still be present at the site, and in nearby Jesus Creek. Fire debris was brought to the landfill from a Hillsboro Farmers’ Coop fire. Although placed at an isolated location, the fire debris had not been properly buried and covered. Fire debris derived leachate apparently intercepted the stream on neighboring property through subsurface migration. Tests indicated that the surface water was discolored but non-toxic. Following the discovery, the county applied much more cover to the debris burial site, and excavated two leachate interception channels. There is no indication of how the county tested the contaminated surface water’s toxicity. The fire debris’ isolated burial location suggests it might have had unique characteristics that warranted special handling and confinement. Like most fire debris, the waste probably contained high concentrations of polynuclear aromatic hydrocarbons (PAHs). We do not known if the waste contained other toxic materials such as bulk pesticides or pesticide-treated seed grain. The fire debris leachate could have contained a broad variety of toxic substances.
Pathways:	A Christmas tree farm borders the site along its western boundary. The areas to the immediate north, east, and south are forested. Individual residences are located nearby to the northwest and west, and more distantly to the south and southwest. An undeveloped county park is located to the northeast. Somewhat weathered "No Trespassing" signs are posted, but the fencing is nearly gone. Jesus Creek and area groundwater are used for domestic purposes. Jesus Creek is contaminated with metals which could affect a downstream domestic surface water intake. Groundwater contamination could represent a threat for nearby domestic wells. Lead in surface soils could represent a windblown or stormwater runoff threat for nearby residences.
Environmental/Health Threats:
Status of Investigative or Remedial Action:	(5/17/96 SMF/SAS) Landfill wastes have not been well characterized, so the full range of potential contaminants to local groundwater or surface water has not been defined. Spent lead bullets should be removed from the site. Approximately 50 pounds of lead bullets were removed from soils by prison work crew, although lead-contaminated soil and additional spent bullets may remain. (5/10/12 AC/SRS) The former shooting range had unacceptable concentrations of lead in soil. A soil cap was installed over the lead impacted soil. The cap was completed in September 2011. See GeoDesign, 2012. Construction Completion Report, Interim Remedial Action Measure. January 18.
Data Sources:	1) April 1990 "Potential Contamination by the Shadybrook Landfill" report. 2) Laboratory Data from the Oregon Sanitary Authority (1968-1971). 3) Laboratory Data from DEQ (1995). 4) Inspection reports. 5) Complaint form. 6) Site Sampling and Assessment Report, by ATC Environmental, 2/7/96, 7) Summary of spent bullet removal activities, by GeoDesign, May 2003. 8) Surface water and groundwater seep sampling report, by GeoDesign, December 2002. 9) September 20, 2004 Work Plan, Phase 1 Remedial Investigation, Former Shadybrook Landfill. 10) June 2005, Ecological Risk Assessment, SEE, Shadybrook Landfill. 11) Draft Remedial Investigation Report, July 5, 2005. 12) Interim Remedial Action Measures Work Plan, January 20, 2006. 13) June 19, 2006; Interim Remedial Action Measures Work Plan, Shadybrook Landfill. 14) June 28, 2006; RI Report Addendum. 15) Phase 2 Remedial Investigation, October 17, 2007. 16) Groundwater and Surface Soil Characterization, Former Shooting Range at the Former Shadybrook Landfill, January 26, 2007. 17) Interim Remedial Action Measure Final Design Document, October 6, 2008. 18) October 17, 2009; Addendum 1 - Phase 2 RI Report. 19) Human Health and Ecological Risk Assessment, December 2010.

Substance Contamination Information
Substance	Media Contaminated	Concentration Level	Date Recorded
ALUMINUM	Groundwater	20 ppm in groundwater seeps that feed Jesus Creek.	8/25/1995
BARIUM	Groundwater	0.50 ppm in groundwater seeps to Jesus Creek	8/25/1995
BARIUM	Surface Water	0.05 ppm in Jesus Creek surface water. 0.30 ppm in west ravine surface water.	8/25/1995
CHROMIUM	Groundwater	0.02 ppm in groundwater seeps that feed Jesus Creek.	8/25/1995
IRON	Surface Water	1.15 ppm in upstream Jesus Creek surface water	9/5/2002 8:15:22 AM
LEAD	Groundwater	0.01 mg/l in groundwater seeps 8/25/95. 0.025 mg/l in seeps 9/11/96.	8/25/1995
LEAD	Other	920 mg/l leachable lead in surface soils. 1.2- to 32 mg/l leachable lead in two samples collected a 1 foot bgs in 1,000 square foot shooting range.	8/25/1995
LEAD	Soil	Eight soil samples with range of 690- to 4,200 ppm in 1,000 square foot shooting range area. Preliminary Remediation Goal for lead in residential soils is 400 ppm. DEQ Level II soil Eco Risk Screening Levels: 16 ppm for birds, 50 ppm for plants.	9/11/1996
LEAD	Surface Water	Surface water concentration (0.03 ppm) exceeds DEQ Level II Ecological Risk Assessment Screening Benchmark Value for freshwater aquatic life of 0.0025 ppm.	9/11/1996
MANGANESE	Groundwater	2.3 ppm in groundwater seeps that drain to Jesus Creek, east side of landfill. DEQ Eco Level II Screening Value for freshwater aquatic life is 0.12 ppm.	8/25/1995
MANGANESE	Surface Water	0.14 ppm in Jesus Creek Surface Water; 1.0 ppm in surface water in site's west ravine. DEQ Level II Eco Screening Value for freshwater aquatic life is 0.12 ppm.	8/25/1995

Investigative, Remedial and Administrative Actions
Action	Start Date	Compl. Date	Resp. Staff	Lead Pgm
No Further Action (Conditional)  (Primary Action)	04/18/2013		Anna Coates	VCP
View Full Report Showing Action History

Site Environmental Controls
Control Description	Begin Date	End Date	Last Reviewed By	Last Review Date
Cap, engineered	09/30/2011	09/30/2011	Anna Coates	09/27/2012
	Comments: Soil cap construction over former shooting range began in August 2011 and was completed by the end of September 2011. Elevated lead concentrations were covered with a minimum of 3 feet of clean soil.
Cap, engineered	02/15/2013		NA
	Comments: Soil cap over approximate 22 acre Washington County former Shadybrook municipal solid waste landfill.

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 Anna Coates at the Northwest regional office or via email at coates.anna@deq.state.or.us. If this does not work, you may contact Gil Wistar at (503) 229-5512, or via email at wistar.gil@deq.state.or.us or contact the Northwest regional office.

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