Conceptual Site Mode and Phase 2 Work Plan

Transcription

1 Conceptual Site Mode and Phase 2 Work Plan Pacific Property Holdings Site 1512 NE 67th Ave Portland, Oregon DEQ Site ID 6142 HydroCon Project Number: Prepared for: Tronghuy Pham Pacific Property Holdings, LLC 3024 NE Rocky Butte Road Portland, OR October 24, 2016 Prepared by: HydroCon, LLC 510 Allen Street, Suite B Kelso, Washington p: (360) f: (360)

2 Table of Contents 1.0 INTRODUCTION Description of Property Adjacent Properties Site History UST Decommissioning Phase Site Geology and Hydrogeology BENEFICIAL WATER AND LAND USE SURVEYS Beneficial Water Use Survey Surface Water Public Water Supply Water Well Survey Beneficial Land Use Survey Summary of Beneficial Water and Land Use Surveys UTILITY EVALUATION CONCEPTUAL SITE MODEL CONSTITUENTS OF POTENTIAL CONCERN PHASE 2 WORK PLAN Permits Health and Safety Plan Underground Utility Locates SOIL SAMPLING Advancement of Soil Borings ANALYTICAL PROGRAM REPORTING QUALIFICATIONS... 12

3 List of Figures Figure 1 Vicinity Map Figure 2 Site Location Map Figure 3 Proposed Boring Map Figure 4 Well Survey Map Figure 5 Zoning Map List of Tables Table 1 Summary of Historical Soil Analytical Results Table 2 Conceptual Site Model Appendices Appendix A Aerial Photos Appendix B UST Documentation and Limited Phase 2 Environmental Site Assessment Report Appendix C Well Logs Appendix D Utility Maps

4 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October INTRODUCTION This Phase 2 Work Plan (work plan) was prepared for Pacific Property Holdings property (site) located at 1512 NE 67 th Avenue, Portland, Oregon (Figure 1). The Oregon Department of Environmental Quality s (DEQ) Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Site (RBDM) guidance document (DEQ, 2003) provides the framework for this plan. The data presented in this work plan was used to evaluate the need for additional assessment. The site owner is currently in the process of a sales transaction of the site property. In the past the site was a service station that dispensed gasoline and diesel fuel. The underground storage tanks (USTs) were decommissioned in March The site was provided a no further action (NFA) letter from the DEQ in March The potential buyer completed a due diligence environmental assessment in July 2016 due to the historical use of the property and documented release that occurred at the site. The assessment detected contaminated soil in fill material under the site that was not related to the former UST system or release (further details of this discovery is provided below). Based on these findings the buyer has requested a site wide NFA determination from the DEQ prior to completing the sale. The buyer intends to develop the site as a self storage facility. On September 30, 2016 the site was entered in to the DEQ voluntary cleanup program to expedite the pathway toward receiving a site wide NFA. This work plan summarizes existing data regarding petroleum impacts and lead contamination that have occurred at the site as the result of historical site use. HydroCon has developed a Conceptual Site Model (CSM) that described potentially complete exposure pathways and receptors for soil and groundwater at the site. Constituents of potential concern (COPCs) were assessed to direct the next phase of site characterization. This Work Plan also addresses data gaps identified through the process of preparing the CSM. 1.1 Description of Property The subject site is located on the east side of 67 th Avenue in Portland, Oregon. The Multnomah County Assessor s Office identifies the subject site as Tax lot ID 1N2E29CD 700 within Section 29 of Township 1 North and Range 2 East of the Willamette Meridian (Figure 1). The site is currently a gravel lot used for staging construction materials (gravel and pipes) for work conducted on behalf of the City of Portland Bureau of Environmental Services. No buildings or permanent structures are on the site. 1.2 Adjacent Properties The site is bordered to the north by Pacific Supermarket and to the west by residential apartments. East of the property are multifamily dwellings. South and east of the site are railway lines and Interstate Highway 84. Adjacent properties are shown on Figure 2. 1 P age

5 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October Site History Site history described in this section is based on the review of the Phase I Environmental Site Assessment dated July 12, 2016 prepared for the buyer. The Phase I provided an aerial photo review for the years 1935, 1939, 1940, 1948, 1951, 1956, 1961, 1970, 1974, 1980, 1986, 1990, 1994, 2001, 2005, 2010, and Copies of the aerial photos are presented in Appendix A. The review of the aerial photos indicates that the property was vacant until the service station building was noted on the 1956 photo. Fill material is observed at the site on photos from 1935, 1939 and The site operated as a fueling service station from the early 1950s through the 1970s. The Phase I reported that the site operated as Early Bird Service and Gas from 1965 to 1970 and was vacant in In 1981 Fairway Auto Upholsterers operated a business at the site and in 1985 Sedon Market & Groceries conducted business at the site. It is unclear when fueling operations were discontinued at the site, however it is known that the UST system was decommissioned by removal in March of UST Decommissioning On March 14, 1990, seven USTs were decommissioned by removal. The two 275 gallon USTs were located east of the station building and five USTs (ranging from 3,000 gallons to 8,000 gallons) were located in a common excavation south of the station building. The UST were reported to be in good condition with no evidence of leaks or spills or groundwater in the excavation. Soil samples were collected from the bottom of the UST excavations and analyzed for total petroleum hydrocarbons (TPH) by EPA Method 418,1. TPH results ranged from 73 parts per million (ppm) to 3,880 ppm from the UST excavation. Further analysis was conducted on sample C-1 that was collected at a depth of 15 feet bgs using a different analytical method (TPH-Hydrocarbon Identification (HCID) scan). The initial TPH result using EPA Method was 2,350 mg/kg. Results of the HCID analysis indicated that gasoline and diesel were not detected above their respective laboratory method reporting limits. The soils encountered were reported to have a decayed odor or possibly a sewage odor. Soil type was described as a fill material that included garbage, tree limbs, tree stumps, railroad ties, license plates and large rocks. Soil/fill material was excavated to a depth of 20 feet below ground surface (bgs) near the station building. The excavation was discontinued due to the risk of undermining the building. A soil sample was collected from the east corner of the building at a depth of 21 feet bgs and detected TPH at 1,140 ppm. A soil sample collected from the west corner at a depth of 20 feet bgs was nondetect for TPH. Excavated soil was stockpiled east of the UST excavation. The DEQ requested additional test pits and analysis at the site. On January 31, 1991 two test pits (Pit #1 and Pit #2) were excavated east of the UST excavation to depths of 19 feet bgs. The Pit #1 sample was collected from a depth of 16 feet bgs and analyzed by TPH with a result of 1,300 ppm. The sample from Pit #2 was collected from a depth of 16 feet bgs and analyzed by TPH-HCID. No gasoline or diesel was detected in this sample. The laboratory noted the sample contains some late eluting chemicals which may be a light oil, but which do not produce a typical petroleum-type fingerprint. One soil sample from the stockpiled soil was analyzed for benzene, toluene, ethylbenzene and total xylenes 2 P age

6 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 (BTEX) using EPA Method Analytical results indicated that only trace xylenes (less than 0.15 ppm) were detected in the sample. Based on the BTEX results the stockpiled soil was used as surface fill east of the service station building. The DEQ concluded that the TPH detected in the soil was not a result of a release from the UST system and are erroneous due to the decayed mattered in the fill material. The DEQ provided a NFA letter for the site on March 4, Copies of the soil sampling reports and DEQ NFA letter are provided in Appendix B Phase 2 On July 27, 2016 a Phase 2 environmental assement was conducted at the site as part of a due diligence for the potential buyer. Results are summarized in the Limited Phase 2 Environmental Site Assessment Report prepared by NW EnviroSearch, Inc. dated September 7, A copy of the Phase 2 report is attached in Appendix B of this work plan. The Phase 2 site activities included the advancement of six soil borings (B-1 through B-6) and the collection of soil samples. Soil borings B-1, B-2 and B-3 were advanced in the area of the former UST excavation. Soil boring B-4 was advance in the vicinity of the former fuel dispenser island. Soil boring B-5 was located in the central portion of the site and soil boring B-6 was located on the eastern portion of the site. The maximum depth explored was 30 feet bgs. Groundwater was not encountered during the drilling activities. Soil boring locations are shown on Figure 3 and in Appendix B. The boring logs indicate that the fill material is generally 20 feet thick. However, at boring location B-5 the boring was advanced to a depth of 25 feet and fill material was still observed. The fill material included wood waste, metal, stained sandy soil and oily paper. Native soils were assumed to be sands and silts at depth. Soil samples were collected at a depth of 20 feet bgs from borings B1, B-2 and B-3 (located at the former UST excavation). They were analyzed for gasoline range hydrocarbons by NWTPH-Gx, diesel and oil range hydrocarbons by NWTPH-Dx, Polynuclear Aromatic Hydrocarbons (PAHs), by EPA Method 8720D and full list volatile organic compounds (VOCs) by EPA Method 8260B. The samples collected from borings B-2 and B3 were also analyzed for total metals and toxicity characteristic leaching procedure (TCLP) metals. All three soil samples were non detect for the diesel range hydrocarbons. Oil range hydrocarbons were detected in all three samples ranging from 1,250 mg/kg to 2,920 mg/kg. The laboratory noted that these results were elevated due to the presence of individual analyte peaks in the quantitation range that are not representative of the fuel pattern reported. Gasoline range hydrocarbons were detected from the soil samples B-2 and B-3 at concentration of 528 mg/kg and 642 mg/kg respectively. PAHs and VOCs were detected in all three borings, however BTEX and chlorinated compounds were not detected. Lead was detected at concentrations of 1,650 mg/kg (B-2) and 2,920 mg/kg (B-3). To evaluate the leaching potential of the metals TCLP follow-up analysis was conducted on the samples. Lead TCLP results were reported at 25.9 mg/l (B-2) and 8.12 mg/l (B-3). 3 P age

7 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 The soil sample collected from boring B-4, located in the vicinity of the former dispenser island, was analyzed by TPH-Gx and TPH-Dx. The sample was collected at a depth of 4 feet bgs. Gasoline and diesel range hydrocarbons were not detected. Oil ranged hydrocarbons were detected at a concentration of 1,040 mg/kg. The soil sample collected from boring B-5, located in the center of the site, was analyzed by TPH-Gx and TPH-Dx. The sample was collected at a depth of 10 feet bgs. Gasoline and diesel range hydrocarbons were not detected. Oil ranged hydrocarbons were detected at a concentration of 1,590 mg/kg. Soil samples analyzed from boring B-6 were collected from 20 feet bgs and 28 feet bgs. Both soil samples were analyzed by TPH-Gx and TPH-Dx. Gasoline and diesel range hydrocarbons were not detected in the samples. Oil range hydrocarbons were detected at 4,140 mg/kg and 1,510 mg/kg. The laboratory noted that the 4,140 mg/kg results were elevated due to the presence of individual analyte peaks in the quantitation range that are not representative of the fuel pattern reported. Follow-up analysis for the sample collected at 20 feet bgs included PAHs, VOCs and metals. PAHs and VOCs were detected, however BTEX and chlorinated compounds were not detected. Lead was detected at a concentration of 805 mg/kg. The lead TCLP result was reported at 1.23 mg/l. The Phase 2 report provided a comparison of the results to the DEQ Urban Residential and Occupational generic risk based concentrations (RBC) cleanup/screening levels (Table 1). The oil range hydrocarbons concentrations detected were below all of the RBC screening levels. The gasoline range hydrocarbons detected in borings B-2 and B-3 and one VOC (1,2,4-Trimethylbenzene) exceed the Urban Residential Vapor Intrusion into Buildings and Leaching to Groundwater pathways. Lead and Arsenic detected in borings B-2, B-3 and B-6 exceed the Soil Ingestion, Dermal Contact and Inhalation RBCs for Urban Residential and Occupational receptors. Lead concentrations also exceeded the Soil Ingestion, Dermal Contact and Inhalation RBCs for Construction/excavation worker and Leaching to Groundwater pathways. PAHs detected in borings B-2, B-3 and B-6 exceeds the Soil Ingestion, Dermal Contact and Inhalation RBCs for Construction/Excavation Worker, Urban Residential and Occupational receptors. The Phase 2 report also noted that the TCLP lead results in two of the samples collected at a depth of 20 feet bgs have leachable lead concentrations above the RCRA hazardous waste level of 5 mg/l. If the soil in this area is removed from the site, the soil would need to be handled as hazardous waste. 1.4 Site Geology and Hydrogeology The site is located on the north slope of the Sylvan Gulch. The gulch was formed 13,000 to 15,000 years ago during the Missoula Ice Age Floods that covered the Portland Basin with approximately 400 feet of water. Based on the review of the aerial photos and the results of the Phase 2 Environmental Site Assessment the upper 20 to 30 feet of the site covered with non engineered fill and debris. The fill consist of sands and gravel, wood waste, metal and paper refuse. Hydrocon reviewed the logs of deep 4 P age

8 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 borings that were advance approximately 1,200 feet northeast of the site. The borings were drilled for NW Natural Gas for cathodic protection. The borings indicate that below the fill material is unconsolidated sediments consisting of sand, gravels and boulders to depths of approximately 30 to 60 feet bgs. Consolidated sediments or cemented gravel are encountered at depths from 60 feet bgs to 400 feet bgs. Base on the review of irrigation well logs within a half mile of the site, groundwater is anticipated to be at a depth greater than 120 feet below the site. Groundwater in the consolidate gravel aquifer is reported to be flowing to the north and northeast under the site (USGS 1993). 2.0 BENEFICIAL WATER AND LAND USE SURVEYS Beneficial land and water use assessments are key elements in determining the applicable clean-up levels at a site as they identify current and reasonably likely future land and water uses at the site and in the vicinity. The land use assessment reveals potential receptors and the water use assessment helps identify potential exposure pathways. Procedures for such assessments are outlined in the DEQ Guidance Document for Conducting Beneficial Water Use Determinations at Environmental Cleanup Sites. The DEQ does not specify a radius of search for the beneficial water use assessment, but defines the search to be within the locality of the facility, which is defined as follows: Any point where a human or an ecological receptor contacts or is reasonably likely to come into contact with facility-related hazardous substances. The locality of the facility takes into account the likelihood of contamination migrating over time so it is typically larger than the facility. Previous environmental investigations outlined in Section 1.3 were primarily intended to evaluate the contamination extent to onsite soil. Groundwater was not encounter during the investigations and is anticipated to be greater than 140 feet below the site. Based on the information in Section 1.3, the estimated locality of the facility includes the fill area of the site; however to be conservative, the beneficial water survey included properties within 0.5 miles of the site and beneficial land survey includes properties adjacent to the site. The methods and findings of the land and water use surveys are presented below. 2.1 Beneficial Water Use Survey The beneficial water use assessment includes evaluation of surface water and groundwater exposure pathways within the locality of the facility. As noted above, the area evaluated includes water use within 0.25 miles of the site Surface Water Bodies of surface water are not located adjacent to the site. The closest surface water body is the Columbia Slough located approximately 2.5 miles northeast of the site. The Willamette River is located approximately 3.5 mile southwest of the site. 5 P age

9 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October Public Water Supply The subject site and adjacent properties are supplied by the City of Portland. According to the City of Portland, the primary source of municipal drinking water for the City of Portland is the Bull Run Watershed located east of the City. The Bull Run Watershed is also supplemented by groundwater from the Columbia South Shore Well Field located in NE Portland during the summer and fall months. The subject site is located approximately 2 miles southwest of the well head protection area for this well field Water Well Survey In order to assess the presence of active water supply wells in the vicinity of the site, HydroCon utilized the Well Log database available from the Oregon Water Resources Department (OWRD). The well log database is organized by the Public Land Survey System (PLSS, i.e. township, range, section) and includes water supply wells, monitoring wells, and geotechnical holes. Listed monitoring and geotechnical holes are not used to extract water for beneficial use, and are therefore not considered as beneficial water uses by the DEQ. The well log database provides PLSS well location information including township, range, section, and in some cases quarter section and quarter-quarter (Q-Q) section. In some cases, address information is also provided. HydroCon used address information (when available) to map wells and location descriptions on the well logs. If the address was not available, measurements and section descriptions provided were used to estimate the location of the wells. The site is located near the southern portion of the southwest quarter of Section 29 of Township 1 North and Range 2 East of the Willamette Meridian. A well log search included a query of Section 29 and Section 32 south of the site. The well search did not identify any domestic water supply wells within 0.25 miles of the subject site. The well search did identify three irrigation wells and one industrial well. Well details are presented below and the approximate locations are shown on Figure 4. Copies of well logs are presented in Appendix C. Irrigation wells MULT 1222 and MULT 1223 are located approximately 1,500 to 2,000 feet north of the site. The wells are owned by the City of Portland Bureau of Parks. Well log MULT 1222 (Bureau of Parks Well #3) was installed in 1969 and is described to be located at the Rose City Golf Course. The well is cased from the surface to a depth of 417 feet bgs. The first water bearing zone encountered during drilling was at a depth of 198 feet bgs. The well casing is perforated at 195 to 205 feet bgs, 352 to 356 feet bgs and 370 to 416 feet bgs. Static water in the well measured in March 1969 was 160 feet bgs. Well MULT 1223 (Bureau of Parks Well #2) was installed in 1968 and is described to be located at in the same quarter section as Well MULT The well is cased from the surface to a depth of 263 feet bgs. The first water bearing zone encountered during drilling was at a depth of 218 feet bgs. The well casing is perforated at 215 to 222 feet bgs, 224 to 235 feet bgs and 244 to 256 feet bgs. Static water in the well measured in June 1968 was 141 feet bgs. 6 P age

10 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 Well MULT 1227 is owned by the Board of County Commissioners and is located approximately 1,800 feet southwest of the site. The well was constructed in 1951 to a total depth of 240 feet bgs and is used as an irrigation well. The well is cased from the surface to a depth of 228 feet bgs. Static water level in the well was reported to be 130 feet bgs. Well MULT 1228 is owned by Fred Myer, Inc. and is located 2,400 feet south of the site. The well was constructed in 1962 and is registered as an industrial well. The well is cased from the surface to 295 bgs. The first water bearing zone encountered was at 182 feet bgs. The well casing is perforated at 185 to 200 feet bgs, and 265 to 280 feet bgs. Static water in the well measured in September 1961 was 150 feet bgs. 2.2 Beneficial Land Use Survey HydroCon reviewed the City of Portland zoning designations available through the City s website (PortlandMaps.com) to assess the current and reasonably anticipated future land uses at the site. The site and properties to the north and east of the site are currently zoned General Commercial (CG) which is intended to provide opportunities for commercial development. The properties west of the site are zoned as Residential 2,000 (R2A) and properties southwest of the site are zoned as EG2. The property south and east of the site consists of rail lines and Interstate Highway 84. A description of the zoning adjacent to the site and at the site is described below. General Commercial (CG) zone The General Commercial (CG) zone is intended to allow auto-accommodating commercial development in areas already predominantly built in this manner and in most newer commercial areas. The zone allows a full range of retail and service businesses with a local or regional market. Industrial uses are allowed but are limited in size to avoid adverse effects different in kind or amount than commercial uses and to ensure that they do not dominate the character of the commercial area. Development is expected to be generally auto-accommodating, except where the site is adjacent to a transit street or in a Pedestrian District. The zone s development standards promote attractive development, an open and pleasant street appearance, and compatibility with adjacent residential areas. Development is intended to be aesthetically pleasing for motorists, transit users, pedestrians, and the businesses themselves. Residential 2,000 (R2) zone The R2 zone is a low density multi-dwelling zone. It allows approximately 21.8 dwelling units per acre. Density may be as high as 32 units per acre if amenity bonus provisions are used. Allowed housing is characterized by one to three story buildings, but at a slightly larger amount of building coverage than the R3 zone. The major types of new development will be duplexes, townhouses, row houses and garden apartments. These housing types are intended to be compatible with adjacent houses. Generally, R2 zoning will be applied near Major City Traffic Streets, Neighborhood Collector and District Collector streets, and local streets adjacent to commercial areas and transit streets. 7 P age

11 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 General Employment (EG2) zones The General Employment zones implement the Mixed Employment map designation of the Comprehensive Plan. The zones allow a wide range of employment opportunities without potential conflicts from interspersed residential uses. The emphasis of the zones is on industrial and industriallyrelated uses. Other commercial uses are also allowed to support a wide range of services and employment opportunities. The development standards for each zone are intended to allow new development which is similar in character to existing development. The intent is to promote viable and attractive industrial/commercial areas. EG2 areas have larger lots and an irregular or large block pattern. The area is less developed, with sites having medium and low building coverages and buildings which are usually set back from the street. EG2 zoned lands will generally be on larger areas than those zoned EG1. A zoning map of the site and the surrounding properties is included as Figure Summary of Beneficial Water and Land Use Surveys Based on the findings of the Beneficial Water Use survey, the surface water and groundwater beneficial assessments, it appears that surface water over 2.5 miles from the site and groundwater is not used for beneficial purposes onsite. Wells identified are not in the locality of the facility. The nearest downgradient well (MULT 1222) is located approximately 2,000 feet north of the site. Based on the nearby well logs, the groundwater under the site is anticipated to be at a depth greater than 140 feet bgs. Based on the findings of the Beneficial Land Use survey, it is possible that the site could be used for residential purposes; however, the future development of the site is planned to be a Self Storage Facility and it is unlikely that the site will not be used for residential purposes in the foreseeable future. As a result, only occupational receptors appear to be potentially complete at the site and residential and urban residential receptors will not be considered further. 3.0 UTILITY EVALUATION A subsurface utility evaluation was conducted in the site vicinity to evaluate the potential for a construction and/or excavation worker to come in contact with impacted soil. Utilities such as water, sanitary sewer, and storm sewer were evaluated since the location of these utilities are generally known by City agencies and the depth of these utilities can exceed 10 feet bgs, although water utilities are generally not deeper than 5 feet bgs. Other utilities including: cable, telephone, gas, electrical, and irrigation were not evaluated since these utilities are generally buried no deeper than approximately 3 feet bgs. HydroCon reviewed information available on the City of Portland website Portlandmaps.com. A map of the City s sewer, water systems and 1954 plumbing inspection report were downloaded and presented in Appendix D. The water and sewer utilities are located under NE 67 th Avenue. Depth of the water line is unknown. The depth of the sewer line under the street ranges from 8 feet bgs north of the site to 24 8 P age

12 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 feet bgs south of the site. The plumbing inspection report from 1954 indicates the sewer connection was accessed through the northwest corner of the site. Currently there are no known underground utilities that are under the site. The site currently has no sewer of water utility services. The depth of future utility services at the site is unknown. Impacts to site soils have been identified during previous investigations at depths ranging from 4 to 28 feet bgs. The concentrations of contaminants detected in soil exceeded the construction and excavation worker RBCs at depths of 20 feet in borings B-1, B-2, B-3 and B-6. There is the potential that construction or excavation workers may encounter impacted soil at shallower depths on site. Additional shallow soil data is needed to evaluate this pathway. 4.0 CONCEPTUAL SITE MODEL A CSM is a site-specific evaluation of potential contaminant sources, exposure pathways, and receptors applicable to the site based on the distribution of constituents, and current and reasonably likely future land and water uses. Exposure pathways, based on DEQ s RBDM guidance document (DEQ, 2003), were assessed for the site utilizing soil data, hydrogeologic data, and current and potential future land and water uses. A CSM for the site is illustrated in Tables 2. The site is zoned General Commercial (CG) and is not currently being utilized for residential purposes. It is unlikely that the site will be used for urban residential purposes in the foreseeable future due to the property owner s plan to sell the property with the intent of the buyer to develop the site as a Self Storage Facility. The gasoline contaminated soil on the southern portion of the site (soil borings B-2 and B-3) exceeds the RBC for Urban Residential Vapor Intrusion into Buildings. The location of these borings is greater than 120 feet from a potential urban residential receptor located west of the site. Gasoline detected in soil boring B-1 was below the RBC for Urban Residential Vapor Intrusion into Buildings. Boring B-1 is located approximately 90 feet from an urban residential receptor located west of the site. The vapor intrusion pathway for urban residential is incomplete. Therefore the following potential receptors for the site are future occupational workers, construction and excavation workers. The site and adjoining properties are connected to the municipal water supply, and there are no wells utilized for domestic purposes at the site or on properties within 0.50 miles. As a result, all residential receptors and the Ingestion & Inhalation from Tapwater and Leaching to Groundwater exposure pathways were excluded from this CSM. Groundwater under the site is estimated to be at a depth greater than 140bgs. It is reasonably unlikely that groundwater is contaminated from the fill material under the site. The following exposure pathways appear to be potentially complete for occupational, and construction and excavation worker receptors. 9 P age

13 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 Soil: Soil Ingestion, Dermal Contact, and Inhalation (RBCss); Volatilization to Outdoor Air (RBCso); and Vapor Intrusion into Buildings (RBCsi). 5.0 CONSTITUENTS OF POTENTIAL CONCERN The COPCs for the site were selected based on the detection of petroleum hydrocarbon-related constituents and metals in soil at the site as described in Sections 1.3 and presented on Table 1. The COPCs in soil include: Gasoline range petroleum hydrocarbons Oil range petroleum hydrocarbons PAHs Metals (Arsenic and Lead) detected above the ingestion pathway RBCs on Table 1, BTEX Naphthalene Iso-Propylbenzene 1,2,4-Trimethylbenzene and 1,3,5-Trimethylbenzene 1,2-dibromoethane (EDB) and 1,2-dichloroethane (EDC) 6.0 PHASE 2 WORK PLAN Based on the review of the past soil assessments discussed in Section 1.3 and the CSM results in Section 4.0 the following data gaps have been identified. Shallow soil data (0-5 feet bgs) is needed to assess the potential for unacceptable risk to site contaminants and soil analytical from native soils below the contaminated fill to characterize the nature and extent of the fill material. The proposed soil borings are shown on Figure Permits No permits will be required for the safe completion of field activities for this scope of work. 6.2 Health and Safety Plan HydroCon will prepare a site specific health and safety plan (HASP) to govern health and safety protocols used during this investigation. Work will be performed using Occupational Safety and Health Administration (OSHA) Level D work attire consisting of hard hats, safety glasses, protective gloves, and protective boots. 10 P age

14 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October Underground Utility Locates Prior to any subsurface work an effort will be made in locating all underground utilities in the area. This includes calling the Oregon One Call service, a minimum two days prior to sampling activities. Also a private utility locating service will be contracted to locate any private underground utilities that may not be marked by the public locating service and clear selected boring locations. 7.0 SOIL SAMPLING 7.1 Advancement of Soil Borings Ten borings (HC-1 through HC-10) will be advanced to further define the extent of petroleum and metals contamination. The proposed boring locations are shown on Figure 3. Soil borings HC-1 through HC-6, HC-11 and HC-12 will be advanced in five-foot intervals to a completion depth of approximately 30 feet bgs or until native soil is encountered, whichever comes first. Soil boring HC-7 through HC-10 will be advance to a total depth of 5 feet bgs and located east of the former station building location to assess the area where the soil/fill that was spread from the former UST excavation and stockpile. If there are no field indications of the soil being contaminated a soil sample will be collected from 4 to 5 foot bgs interval. Continuous soil samples will be collected using a five-foot long macro core tube sampler equipped with new, clear polyethylene liners. Each sample core will be inspected for lithologic composition, and field screened for the presence of petroleum hydrocarbons (stain, odor, and organic vapors with a PID). Boring logs detailing the lithology, field screening results, and sample depths will be included in the subsurface investigation report. Up to three soil samples will be collected from each boring. A soil sample from 0 to 5 feet bgs will be collected from each boring. A soil sample will be collected from the depth with the highest PID reading located at the depth of the fill material (approximately 20 feet bgs), and a sample will be collected from the native soil (if encountered) or near the bottom of the borehole. The samples will be submitted to the laboratory based on sampling objectives (i.e., depth, soil type) and field screening results. The selected soil samples will be removed from the polyethylene tubing using a new pair of disposable gloves and placed directly into labeled laboratory prepared jars and sealed with Teflon-lined lids. Soil samples will be placed into laboratory supplied containers (utilizing 5035A field preservation) and immediately placed in an ice filled cooler along with chain-of-custody documentation for shipment to APEX labs in Portland, Oregon. All drilling and sampling tools will be decontaminated between boring locations using a hot water pressure washer. All water generated during decontamination procedures will be placed in a labeled 55-gallon drum and stored on site pending disposal to a licensed disposal facility. 8.0 ANALYTICAL PROGRAM A maximum of 28 soil samples will be collected to laboratory analysis. All of the collected samples will be analyzed for the following suite of parameters: 11 P age

15 Conceptual Site Model and Phase 2 Work Plan Pacific Holdings Property Portland Oregon October 2016 Gasoline Range Total Petroleum Hydrocarbons (GRPH) by Northwest Method NWTPH-Gx; Diesel Range (DRPH) and Motor Oil Range (ORPH) Total Petroleum Hydrocarbons by Northwest Method NWTPH-Dx with silica gel cleanup BTEX, naphthalene, EDB, EDC, Iso-Propylbenzene, 1,2,4-Trimethylbenzene and 1,3,5- Trimethylbenzene by EPA Method If diesel or oil range hydrocarbons are detected, follow up analysis will be for Polynuclear Aromatic Hydrocarbons (PAHs), by EPA Method 8720D Arsenic and Lead by EPA Method 6020 If Lead or Arsenic is detected above 100 mg/kg the sample analyzed for TCLP Metals by EPA Method REPORTING Upon the completion of field work and receipt of the analytical results, HydroCon will prepare a report documenting field activities and methodologies, the analytical results, and recommendations for additional investigation (if necessary) or site closure. Results will be compared to RBCs for the following pathways for occupational, construction and excavation workers. Soil Ingestion, Dermal Contact, and Inhalation (RBCss); Volatilization to Outdoor Air (RBCso); and Vapor Intrusion into Buildings (RBCsi) QUALIFICATIONS HydroCon s services will be performed in a manner consistent with generally accepted practices of the profession undertaken in similar studies in the same geographical area during the same time period. HydroCon makes no warranties, either expressed or implied, regarding the findings, conclusions or recommendations. Please note that HydroCon does not warrant the work of laboratories, regulatory agencies, or other third parties supplying information used in the preparation of the report. Findings and conclusions resulting from these services will be based upon information derived from the on-site activities and other services performed under this scope of work; such information is subject to change over time. Certain indicators of the presence of hazardous substances, petroleum products, or other constituents may have been latent, inaccessible, unobservable, nondetectable or not present during these services, and we cannot represent that the site contains no hazardous substances, toxic materials, petroleum products, or other latent conditions beyond those identified during this monitoring. Subsurface conditions may vary from those encountered at specific sampling locations or during other surveys, tests, assessments, investigations, or exploratory services; the data, interpretations and findings are based solely upon data obtained at the time and within the scope of these services. 12 P age

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17 SITE NOTE(S): 1. USGS, MOUNT TABOR QUADRANGLE OREGON 7.5 MINUTE SERIES (TOPOGRAPHIC) W N S E 501 Allen St Suite B, Kelso WA Ph: (360) DATE: DWN: JH CHK: BP APPROVED: BP PRJ. MGR: DB PROJECT NO: FIGURE 1 SITE LOCATION PACIFIC PROPERTY HOLDINGS, LLC 1512 NE 67TH AVENUE PORTLAND, OR

18 APARTMENT COMPLEX NE 67TH AVENUE PACIFIC SUPERMARKET SITE DUPLEX HOMES INTERSTATE HIGHWAY 84 NE HALSEY STREET TUFF SHED C:\Users\jonathanh\Drafting Temp\ \ dwg LEGEND PROPERTY BOUNDARY W N S E 510 Allen St. Suite B Kelso, WA 98626, Ph(360) DATE: DWN: JH CHK: BP APPROVED: BP PRJ. MGR: DB PROJECT NO: FIGURE 2 SITE LOCATION MAP PACIFIC PROPERTY HOLDINGS, LLC 1512 NE 67TH AVENUE PORTLAND, OR

19 HC11 HC1 EDGE OF FORMER ASPHALT HC5 B5 B6 HC7 HC2 B4 HC9 HC8 HC3 FORMER DISPENSER ISLAND FORMER STATION BUILDING HC6 HC10 HC4 B1 B3 B2 C:\Users\jonathanh\Drafting Temp\ \ dwg HC1 B1 LEGEND PROPERTY BOUNDARY PROPOSED BORING LOCATION BORINGS BY ENVIROSEARCH, INC ( ) FORMER UST PIT N W E S HC Allen St. Suite B Kelso, WA 98626, Ph(360) DATE: DWN: JH CHK: BP APPROVED: BP PRJ. MGR: DB PROJECT NO: FIGURE 3 PROPOSED BORING MAP PACIFIC PROPERTY HOLDINGS, LLC 1512 NE 67TH AVENUE PORTLAND, OR

20 MULT1223 MULT1222 SITE MULT1227 MULT1228 NOTE(S): 1. USGS, MOUNT TABOR QUADRANGLE OREGON 7.5 MINUTE SERIES (TOPOGRAPHIC) W N S E 501 Allen St Suite B, Kelso WA Ph: (360) DATE: DWN: JH CHK: BP APPROVED: BP PRJ. MGR: DB PROJECT NO: FIGURE 4 WELL SURVEY MAP PACIFIC PROPERTY HOLDINGS, LLC 1512 NE 67TH AVENUE PORTLAND, OR

21 SITE C:\Users\jonathanh\Drafting Temp\ \ dwg LEGEND PROPERTY BOUNDARY INTERSTATE HIGHWAY 84 N W E S 510 Allen St. Suite B Kelso, WA 98626, Ph(360) DATE: DWN: JH CHK: BP APPROVED: BP PRJ. MGR: DB PROJECT NO: FIGURE 5 ZONING MAP PACIFIC PROPERTY HOLDINGS, LLC 1512 NE 67TH AVENUE PORTLAND, OR

22 NE Halsey Site---Soil Data Table 1 Units of Measure: mg/kg (PPM=Parts Per Million) Soil Samples Collected 7/27/16 Via GeoProbe DEQ RBC Values Urban Residential Soils DEQ RBC Values Construction Worker DEQ RBC Values Excavation Worker DEQ RBC Values Occupational Soils DEQ DEQ & EPA 1 Volatil. 1 Vapor METHOD Ingest, Leaching to Ingest, Contact To B-1-20 B-2-20 B-3-20 B-4-4 B-5-10 B-6-20 B-6-28 Intrusion 1 Ingest, contact, 1 Ingest, contact Contact 1 1 Vapor Portland Basin Volatil. To 1 Leaching to Intrusion Background REPORTING Inhalation ANALYSIS ANALYTE OR PARAMETER mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg (RBC) Ground Outdoor into Bldg. LIMIT mg/kg Air (RBC) (RBC) Water (RBC) Inhalation (RBC) Inhalation (RBC) Outdoor Air Ground Water Inhalation (RBC) into Bldg. (RBC) Concentrations (RBC) (RBC) mg/kg mg/kg mg/kg mg/kg mg/kg for Metals in mg/kg mg/kg mg/kg mg/kg Soils Diesel Range Organics ND ND ND ND ND ND ND 2,200 >Max >Max 9,500 4,600 >Max 14,000 >Max >Max >Max - NWTPH-Dx Oil Range Organics NWTPH-Gx Gasoline Range Organics ND ND ND 12.7 ND 2,500 5, ,700 >Max 20,000 69,000 >Max Total Metals by EPA 6020 (ICPMS) TCLP Metals by EPA 6020 (ICPMS) PAHS/ Semivolatile Organic Compounds by EPA 8270D VOC s Volatile Organic Compounds by EPA 8260B Antimony nt nt nt 3.39 nt NV NV NV ~ NV NV NV NV NV ~ Arsenic nt nt nt 9.65 nt 1.0 NV NV ~ NV NV ~ 8.8 Beryllium nt ND nt nt nt 310 NV NV ~ NV NV ~ Cadmium nt nt nt 3.89 nt 160 NV NV ~ 350 9,700 1,100 NV NV ~ 0.63 Chromium nt nt nt 27.4 nt 230,000 NV NV ~ 530,000 >Max >Max NV NV ~ 76 Copper nt nt nt 144 nt 6200 NV NV ~ NV NV ~ 34 Lead nt nt nt 805 nt 400 NV NV NV NV Mercury nt nt nt nt 47 NV NV ~ 110 2, NV NV ~ 0.23 Nickel nt nt nt 24 nt 3100 NV NV ~ NV NV ~ 47 Selenium nt ND ND nt nt ND nt Silver nt ND nt nt ND nt 780 NV NV ~ 1,800 49,000 5,800 NV NV ~ 0.82 Thallium nt ND ND nt nt ND nt Zinc nt nt nt 579 nt Arsenic nt ND ND nt nt ND nt 5.0 Barium nt nt nt 1.15 nt 100 Cadmium nt ND ND nt nt ND nt 1.0 Chromium nt ND ND nt nt ND nt 5.0 Not Applicable: RBC screening values do not exist for TCLP Metals Lead nt nt nt 1.23 nt 5.0 Mercury nt ND ND nt nt ND nt 0.2 Selenium nt ND ND nt nt ND nt 1.0 Silver nt ND ND nt nt ND nt 5.0 Acenaphthene ND ND nt nt ND nt 9,400 >Max >Max >Csat 21, ,000 70,000 >Max >Max >Csat - Acenaphthylene nt nt nt Anthracene ND nt nt nt 47,000 >Max >Max >Csat 110,000 >Max 350,000 >Max >Max >Csat - Benz(a)anthracene nt nt 1.97 nt 0.34 >Csat >Csat >Csat >Csat Benzo(a)pyrene nt nt 3.49 nt NV NV NV NV >Csat - Benzo(b)fluoranthene nt nt 4.55 nt 0.34 NV NV >Csat NV NV >Csat Benzo(k)fluoranthene nt nt 1.24 nt 3.4 NV NV >Csat 240 6, NV NV >Csat - Benzo(g,h,i)perylene nt nt 3.95 nt Chrysene nt nt 3.96 nt 34 NV NV >Csat 2,400 67, NV NV >Csat - Dibenz(a,h)anthracene ND nt nt nt NV NV >Csat NV NV >Csat - Dibenozofuran ND ND ND nt nt ND nt Fluoranthene nt nt 6.63 nt 4,800 NV NV >Csat 10, ,000 30,000 NV NV >Csat - Fluorene ND nt nt nt 6,300 >Max >Max >Csat 14, ,000 47,000 >Max >Max >Csat - Indeno(1,2,3-cd)pyrene nt nt 3.22 nt 0.34 NV NV >Csat NV NV >Csat - 1-Methylnaphthalene ND nt nt nt Methylnaphthalene ND nt nt 0.33 nt Naphthalene nt nt 1.08 nt , Phenanthrene nt nt 3.98 nt Pyrene nt nt 8.4 nt 3,600 >Csat >Csat >Csat 7, ,000 23,000 >Csat >Csat >Csat - Benzene ND ND nt nt ND nt , n- Butylbenzene ND nt nt ND nt sec- Butylbenzene ND nt nt ND nt tert- Butylbenzene ND nt nt ND nt Ethylbenzene ND ND 0.08 nt nt ND nt ,700 49, Isopropylbenzene (Cumene) ND nt nt ND nt 7,000 >Csat >Csat , ,000 57,000 >Csat >Csat >Csat - 4-Isopropyltoluene ND nt nt nt Naphthalene ND ND nt nt ND nt , n-propylbenzene ND nt nt ND nt Toluene ND ND ND nt nt nt 12,000 >Csat >Csat , ,000 88,000 >Csat >Csat 490-1,2,4-Trimethylbenzene ND nt nt ND nt ,000 54,000 2, ,3,5-Trimethylbenzene ND ND 0.31 nt nt ND nt 1,600 >Max >Max 110 3,500 98,000 12,000 >Max >Max Xylene s total ND nt nt ND nt 2,900 >Csat ,000 >Csat 560,000 25,000 >Csat >Csat NOTE: Other VOC s were analyzed and were found to be ND (non-detect). See the full lab report attached in the Appendices of the report. Notes: mg/kg and mg/l are equivalent to parts per million (ppm) ND indicates analyte not detected above method reporting limit nt indicates analyte not tested - indicates no state cleanup criteria currently exists for specific detection limits >Max indicates that the constituent RBC for this pathway is calculated as greater than 1,000,000 mg/kg or 1,000,000 mg/l. Therefore, this substance is deemed not to pose risks in this scenario. NV indicates that this chemical is considered nonvolatile for purposes of the exposure calculations. >Csat indicates that soil RBC exceeds the limit of three-phase equilibrium partitioning. Soil concentrations in excess of Csat indicate that free product might be present. 1 DEQ Risk Based Concentration (RBC) for soils: Urban Residential, Occupational, Construction and Excavation Worker (Updated 11/01/2015) ~ indicates Leaching- to- Groundwater RBC s are not provided for most inorganic chemicals All other PAH/ SVOC s and VOC s that were tested were found to be Not Detected. See laboratory report for further details. Chromium (III) RBC Standard used for Chromium. Analytical detection limits vary. See laboratory reports for specific detection limits. 9/7/2016 RCRA Hazardous Waste Threshold Not Applicable Not Applicable

23 Oregon Department of Environmental Quality RBDM Conceptual Site Model Table 2 Conceptual Site Model Pacific Property Holdings Portland, Oregon HydroCon Project Number PRIMARY SOURCES PRIMARY RELEASE MECHANISMS SECONDARY SOURCES TRANSPORT MECHANISMS TERTIARY SOURCES EXPOSURE ROUTES Urban Residential POTENTIAL RECEPTORS Occupational Construction & Excavation Current Future Current Future Current Future Surface Soils Subsurface Soils Particles/Volatiles Air (Outdoor) Inhalation Ingestion Dermal Contact Particles/Volatiles Air (Outdoor) Inhalation Ingestion Dermal Contact UST/Fill material Leaking Volatilization Air (Outdoor) Air (Indoor) Inhalation Inhalation Leaching Groundwater Ingestion Vol. Inhalation Vol. at the Tap Air (Indoor) Inhalation Ingestion Groundwater Volatilization Air (Outdoor) Air (Indoor) Inhalation Inhalation Volatilization Air (Excavation) Dermal Contact Inhalation Notes: + This route is a primary source of exposure. - There is no exposure by this route. Discharge Surface Water (3)

24 APPENDIX A AERIAL PHOTOS

25 1935 Aerial Photo

26 1939 Aerial Photo

27 1940 Aerial Photo

28 1948 Aerial Photo

29 19 51 Aerial Photo

30 1956 Aerial Photo

31 1961 Aerial Photo

32 1964 Aerial Photo

33 1970 Aerial Photo

34 Aerial Photo

35 1980 Aerial Photo

36 1986 Aerial Photo

37 1990 Aerial Photo

38 1994 Aerial Photo

39 Coogle earth feet~ meters 90

40 Coogle earth feet~ ITEters 90

41 Coogle earth feet~ meters 90 ~o/0

42 Coogle earth 90 rreters~ feet~============300

43 APPENDIX B UST REPORTS AND LIMITED PHASE 2 ENVIRONMENTAL SITE ASSESSMENT REPORT

44

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48

49

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65 Limited Phase 2 Environmental Site Assessment Report SITE Northeast Halsey Site 1512 NE 67th Avenue Portland, Oregon FOR: West Coast Self-Storage 39 Castledown Road Pleasanton, CA Attn. Mr. Steve Tangney Vice President, Real Estate Prepared By: NW EnviroSearch, Inc. P.O. Box 1290 Oregon City, Oregon Michael W. Gibson Senior CHMM, WSO-CSS Tim O'Gara, R.G., Project Geologist envirosearch@ bctonline.com NWES Project# September 7th,

66 EXECUTIVE SUMMARY This report documents the work performed to evaluate the environmental conditions of the soils at the former gas/service station property located at 1512 NE 67th A venue, Portland, Oregon. The work was performed at the request of the client, West Coast Self-Storage, Attn. Mr. Steve Tangney (Vice President). The Phase 2 Environmental Site Assessment investigation has been performed to investigate environmental concerns noted in the NW EnviroSearch, Inc. Phase 1 Environmental Site Assessment (ESA) report (June 2016) for the subject site. In summary the Phase 1 ESA noted that during the decommissioning of UST' s at the Site in the late 1990's and subsequent soils removal work, DEQ issued a No Further Action (NFA) determination for the work, however as noted in the Phase 1 ESA report, regulatory standards have changed greatly since the late 1990's. The following is an excerpt from the Phase 1 ESA recommendations: Due to potential 'vapor intrusion to indoor or outdoor air' which was not regulated and was not evaluated in 1990, we recommend that a limited Phase 2 Environmental Site Assessment be peiformed to address this potential risk. Accordingly a Limited Phase 2 ESA was approved by West Coast Self-Storage to complete additional 'due-diligence' environmental assessment tasks and the work was completed in the field July 27, Soil sampling activities occurred onsite as planned, with a total of 6 boring locations; 3 in the former tanks/ust area, 1 in former Fuel Island, one north of the former gas/service station and one northeast of the former building. Seven soil samples were analyzed as per the original Work Plan and the following is a summary of those findings, with results compared to DEQ Urban Residential (commercial zoning) and Occupational RBC screening levels. SOIL Diesel: 7 soil samples were analyzed and all were ND (non-detect for Diesel). Petroleum lube oils: 7 samples were analyzed and all detected lube oil petroleum, mostly at the 20' depth and shallower and one sample deeper (28') and those levels of petroleum were below applicable DEQ screening values. Gasoline: 7 samples analyzed with 4 having ND results and three with lower levels of gasoline. However, 2 samples in the former tanks/ust location had gasoline concentrations at 20' deep that are above the Vapor Intrusion into Buildings and Leaching to Ground Water pathways. However, these are not considered to a 'completed risk pathway' as ground water is 70' below ground surface (bgs) and the contamination is at 20' deep, with the soils creating a 'cap' over that layer of gasoline contamination, mitigating the vapor risk. Note; there are no buildings currently onsite. Total 8-Metals: 3 samples were analyzed and Arsenic, Lead and Mercury were found to be above DEQ screening values or background levels. a. Arsenic was present above the DEQ Urban Residential and Occupational Ingestion, Contact, Inhalation pathway and only above the background levels in one sample, (however, the DEQ Portland Basin Background Concentrations for Metals in Soils memo indicated the detected Arsenic levels in two of the

67 samples analyzed are well below background for this region and thus deemed to be naturally occurring). b. Mercury was only above background levels and was below all DEQ RBC screening values. c. Lead was elevated well above both the Urban Residential and Occupational screening values for all listed pathways. As such, TCLP leachable lead analysis was also performed and two of the three samples results had leachable lead above the RCRA hazardous waste level of 5 mglkg (25.9 and 8.12) at 20' deep in the former tanks/ust area. This is not indicative of tanks related contamination, but older fill soils brought to the Site, based upon the depth, lube oils present and other observations of materials in the soils. NOTE: the soils are only deemed a hazardous waste if removed; thereafter all RCRA regulations for handling, storage and disposal would apply. They do not apply if no excavation/removal activities occur. It is also notable that lead is very stable in soils at this depth of 20' and well above ground water and thus not deemed to be a likely risk to ground water (50' separation) or human use of the Site surface. VOC's (solvents) and PAH's (semi-volatile compounds in petroleum) were analyzed in four of the seven samples. Six PAH's and one VOC (no chlorinated VOC's) were found to be above Ingestion, Contact, Inhalation and Leaching to Ground Water soil pathways. 1,2,4-Trimethylbenzene in a 20' deep sample was above the Vapor Intrusion into Buildings screening value, however as noted above, with the lower levels and 20' of soil cap, the vapor risk is mitigated. Recommendations: The DEQ issued NFA (No Further Action) for the Site is limited to the regulatory standards of the late 1990's and can no longer be considered representative of the Site or the former fuel tanks area, due to current and more extensive data for the tanks area and the Site in general. The data has indicated that fill soil brought onto the Site near the 20' depth, prior to the gas/service station use, are the primary contributor to Site contamination. Based upon the data and current regulations we offer the following recommendations: 1. The Site needs to be entered into the DEQ's Voluntary Cleanup Program for oversight and review of the environmental conditions and obtaining DEQ direction/guidance in what additional assessment is needed for the Site to meet regulatory standards for issuance of a Site wide No Further Action determination and thereafter development and use. 2. Additional soil sampling, lab analysis and risk assessment will be required to meet DEQ's regulatory requirements. 3. If any soils are removed from the area around 20' deep (investigations, pilings installation, et' cetera); due to the elevated lead levels, any soils removed from that depth area may need to be handled, managed as RCRA hazardous waste (pending confirmation lab analysis of accumulated soils). End of Summary ii

68 Table of Contents Executive Summary Introduction & Purpose Site Background Site Location and Description Regulatory History Site Investigation Summarized Scope ofwork Site Investigation Soil Sample Results Conclusions and Recommendations ~imitations... ll TAB~ES Table 1 NE Halsey Site: Soil Data APPENDICES Appendix A o Figure 1: USGS Topo Area Map o Figure 2: Site Map Appendix B o Project Photos: 1-10 o Boring Logs Appendix C o Lab Analysis Report: Apex Lab iii

69 Limited Phase 2 Environmental Site Assessment Report NE Halsey Site 1.0 Introduction & Purpose This report has been prepared at the request of the client, West Coast Self-Storage, Attn. Mr. Steve Tangney, VP of Real Estate, to perform additional Phase 2 ESA (Environmental Site Assessment) investigational tasks at the undeveloped gravel lot identified as the 'NE Halsey Site', located at 1512 NE 67th A venue, Portland, Oregon. The work was performed to investigate suspect and known environmental conditions per ASTM, industry and regulatory (Oregon Department of Environmental Quality) due-diligence procedures. West Coast Self-Storage, as part of their thorough due-diligence process in considering the property for purchase and development, contracted with NW EnviroSearch, Inc. (NWES) to perform the initial Phase 1 Environmental Site Assessment (ESA) research for the Site and that report had recommended additional environmental investigations in the form of a Phase 2 ESA to investigate known or possible environmental concerns associated with the past UST tanks removal area and use of the Site as a gas/service station many years ago. The following is a summary excerpt from that Phase 1 ESA report recommendations: Recommendations: We have performed a Phase I Environmental Site Assessment in conformance with the scope and limitations of ASTM Practice E of the 'Northeast Halsey Site', 1512 NE 6th Avenue, Portland, Oregon 97213, the property. Any exceptions to, or deletions from, this practice are described in Section 1.5 of this report. This assessment has revealed evidence of potential recognized environmental conditions that requires further assessment, as noted below. Recommendations: 1. Due to potential 'vapor intrusion to indoor or outdoor air' which was not regulated and was not evaluated in 1990, we recommend that a limited Phase 2 Environmental Site Assessment be performed to address this potential risk and include: a. Subsurface soil sampling and lab analysis at 3 or 4 locations in the area of the former UST's and where contamination is still present. b. Analyze the 3 or 4 soil samples for: VOC's (EPA 8260 Volatile Organic Compounds) and SVOC's/PAH's (EPA 8270 Semi- Volatile, Polynuclear Aromatic Hydrocarbons) as well as NWTPH-Gx and Dx (gasoline/diesel/oil). c. Compare the lab data to DEQ Urban Residential (commercial zoned sites) Vapor screening criteria to determine if a potential risk is present. The purpose of this Phase 2 ESA work is to gather additional environmental data regarding the past tanks/ust area petroleum contamination conditions and other areas of the Site to determine if the current environmental conditions of the Site meet current DEQ regulatory standards for a No Further Action determination for the entire Site and how this relates to potential development of the Site by West Coast Self-Storage. 4

70 2.0 Site Background 2.1 Site Location and Description The Site is located at 1512 NE 67th A venue in the northeast region of Portland, with the gravel lot located on the east side of NE 6ih. The Site is zoned commercial, in an area of mixed commercial, multi-tenant residential and nearby single family residential homes. The Site is currently being used on a short term basis by a construction company for storage of project materials for a nearby construction project for the City of Portland. 2.2 Regulatory History The regulatory history of the Site is primarily limited to the former UST' s that were decommissioned via removal in the late 1990's. During the course of that work apparently the tanks were removed, some petroleum contaminated soils removed and the remaining contamination along the south side of the Site, allowed to remain. DEQ issued the Site a No Further Action designation based upon the requirements of that era and the data provided to DEQ, by the contractor. Note; at that time Vapor Intrusion and Leaching to Ground Water as well as other risk assessment criteria were not regulated, as they have been for the past several years. 3.0 Site Investigation The following outlines the scope of the work performed and the lab analysis results. 3.1 Summarized Scope of Work The scope of work included: 1. Call and complete a 'public utilities' locate request. 2. Arrive onsite and perform private utilities locate activities around In general locations where drilling/soil sampling will be performed. 3. GeoProbe Drill Rig Soils Sampling: Soils to be screened via sample cores from the surface to the bottom of the boring depth, which will vary depending upon the location and any findings during the screening activity. Depth of borings will range from surface to 20' in general locations, deeper as needed and based upon subsurface soil conditions. Three borings to be advanced in the former area of tanks/ust' s at the south end of the Site (per drawing provided to us from DEQ files). One boring in the former fuel island area and two borings out from the north and west sides of the former gas/service station building to assess for possible past spillage or used oil dumping activities. 4. All samples collected will be field screened and assessed during sampling. Then the samples will be taken via Chain of Custody to Apex Labs in Tigard, OR ('third party lab') for analysis as per industry, DEQ and EPA standard procedures. 5. Lab analysis methods will vary depending upon the field screening results. Lab analysis may include some or all of the following: o NWTPH-Gx (quantification of gasoline range petroleum). 5

71 o NWTPH-Dx (quantification of diesel and lube oil range petroleum). o EPA 8260B Volatile Organic Compounds: basically a solvent scan for paint, fuel and auto repair related solvents and VOC's in petroleum. o EPA 8270 for Semi-volatiles/Polynuclear Aromatic Hydrocarbons, which are carcinogenic and non-carcinogenic petroleum constituent compounds. o Total 8-Metals: only for samples where Dx lube oil range petroleum is detected above DEQ RBC Occupational screening values. In addition, if elevated Total Metals levels are encountered additional metals testing via TCLP (leachable metals) to be performed to determine if levels exceed RCRA hazardous waste thresholds. 6. After approximately 2 to 2.5 weeks of analysis time the lab analysis data will be reviewed and the results compared to DEQ and EPA regulatory screening/cleanup standards (DEQ RBC/RBDM & EPA Region Preliminary Remediation Guidelines) for commercial zoned sites and land uses. 7. Once the borings are completed, they will be 'closed' as per State of Oregon standards which includes the following: backfill with Bentonite to seal the boring. 8. A final report then be developed which to include the documentation of field work and initial assessment findings, lab analysis results and the comparison of the data to regulatory standards. NW EnviroSearch, Inc. (NWES) will then provide conclusions and recommendations based upon the findings, regulatory standards and professional expertise. 3.2 Site Investigation Area Geology According to the USDA Soil Conservation Service, the original soils at this site are very deep, moderately well drained soils on old terraces. The soils were formed in mixed, very loamy alluvium. The soils at the site were found to be mainly silts and silty sands during drilling. It was obvious that imported fill had been placed in several locations. This fill overlies the native soils The site terraces mentioned by the USDA were formed on glacial outburst flood sediments. The silty sediments were seen during drilling to be at least 30 feet thick, and overlie a coarse sand and gravel formation known as the Willamette Aquifer. The Willamette Aquifer is up to 600 feet thick beneath the site. The top of the water table beneath the site is reported to be around 70 feet below grade. Water in the aquifer is moving towards the north-northeast. According to Oregon Water Resources Department records there are no water wells within a mile of the site Field Sampling A total of six borings were advanced during the course of the Site assessment activities. 6

72 Borings B-1, B-2 and B-3 were placed in an area that had previously held underground fuel tanks in the southwest portion of the site. Boring B-1 (see Figure 2 Site Map) was the most westerly of the three and B-3 was the most easterly. B-1 encountered silty black sand with occasional wood chips from feet below grade. The soils in this portion of the boring also had a relatively strong hydrocarbon odor. The staining and odor extended down to 24 feet below grade, where the soil changed to a brown silt that was apparently not impacted. The boring was stopped at 25 feet below grade. Boring B-2 was placed to the east of B-1, in the area of the former tanks!ust nest. Stained soil that appeared to be (color and petroleum odor) contaminated was encountered from 18 to 23 feet below grade based on the black color and distinct hydrocarbon odor. No wood was detected in this boring. The stained soil ended at 13 feet below grade. Below that point, to a maximum depth of 25 feet, the soil was a brown sand, with the petroleum odor ending at 25' bgs (below ground surface). Boring B-3 was in the eastern portion of the former tank pit area. At a depth of 18 feet, the soil was stained black and had a strong hydrocarbon odor. In a section between feet below grade, we encountered several pieces of wood, pieces of metal parts, gaskets and other rubble. The stained soils continued down to 24.5 feet below grade, which was apparently the lower extend of the contamination. The final 6 inches of soil from the boring was a tan sand that did not have any hydrocarbon odors. Boring B-4 was placed in an area that had been a fuel dispenser island, along the western side of the Site (NE 67th Ave). The boring in this location was located to determine if there was any release from former fuel dispenser piping or surface spill that led from the tanks to the former island. Because we were only looking for shallow spills, this boring was only extended down to 5 feet below grade. Light staining was detected from feet below grade, but there was no hydrocarbon odors associated with it. Boring B-5 was located slightly north of the former gas/service station building that had once been on this site. The boring location was chosen to document what was beneath the center area of the site and north adjacent to the former gas/service station. The upper 2 feet of soil was a silty sand. Below that, and extending down to the bottom of the boring at 25 feet, we found silty black sand that was stained and had a distinct hydrocarbon odor. In addition, we detected much rubble that included various wood pieces, sawdust, metal pieces, and even oil soaked paper. We were not able to get a clean bottom sample (no observed contamination or petroleum odor) from this location, even though the boring extended down to 25 feet below grade. Boring B-6 was the final boring. It was located on the northeastern side of the former gas/service station building at the site. Once again, rubble consisting of wood chips sawdust gasket material, and metal pieces were intermingled with the stained silty soil. The soil had a strong hydrocarbon odor. This material was found down to a depth of 20 feet below grade. 7

73 Below the 20-foot level, the soil was sandy silt. It was brown and had a minor hydrocarbon odor. This changed to a tan sand with no odor at a depth of 29 feet below grade. Boring Logs for B-1 through B-6 are contained in Appendix B Soil Sample Results A total of 7 soil samples were collected via GeoProbe drill rig (7/27/2016) for analysis. Samples were collected by the Project Geologist using clean nitrile gloves into glass jars with Teflon lids, supplied by the lab. The samples were labeled and delivered via chain-of-custody to the lab the same day they were sampled. Lab results are summarized in the attached Table 1, document, with results compared to applicable DEQ and EPA criteria. Diesel: 7 soil samples were analyzed and all were ND (non-detect for Diesel). Petroleum lube oils: 7 samples were analyzed and all detected lube oil petroleum, mostly at the 20' depth and shallower and one sample deeper (28') and those levels of petroleum were below applicable DEQ screening values. Gasoline: 7 samples analyzed with 4 having ND results and three with lower levels of gasoline. However, 2 samples in the former tanks/ust location had gasoline at 20' deep had levels of gasoline above the Vapor Intrusion into Buildings and Leaching to Ground Water pathways. However, these are not considered to a 'completed risk pathway' as ground water is 70' below ground surface (bgs) and the contamination is at 20' deep, with the soils creating a 'cap' over that layer of gasoline contamination, mitigating the vapor risk. Note; there are no buildings currently onsite. Total 8-Metals: 3 samples were analyzed and Arsenic, Lead and Mercury were found to be above DEQ screening values or background levels. 1. Arsenic was present above the DEQ Urban Residential and Occupational Ingestion, Contact, Inhalation pathway and only above the background levels in one sample, (however, the DEQ Portland Basin Background Concentrations for Metals in Soils memo indicated the detected Arsenic levels in two of the samples analyzed are well below background for this region and thus deemed to be naturally occurring). 2. Mercury was only above average background levels and was below all DEQ RBC screening values. 3. Lead was elevated well above both the Urban Residential and Occupational screening values for all listed pathways. As such, TCLP leachable lead analysis was also performed and two of the three samples results had leachable lead above the RCRA hazardous waste level of 5 mglkg (25.9 and 8.12) at 20' deep in the former tanks/ust area. This is not indicative of tanks related contamination, but older fill soils brought to the Site, based upon the depth, lube oils present and other observations of materials in the soils. NOTE: the soils are only deemed a hazardous waste if removed; thereafter all 8

74 RCRA regulations for handling, storage and disposal would apply. They do not apply if no excavation/removal activities occur. It is also notable that lead is very stable in soils at this depth of 20' and well above ground water and thus not deemed to be a likely risk to ground water (50' separation) or human use of the Site surface. VOC's (solvents) and PAH's (semi-volatile compounds in petroleum) were analyzed in four of the seven samples. Six PAH's and one VOC (no chlorinated VOC's) were found to be above Ingestion, Contact, Inhalation and Leaching to Ground Water soil pathways. 1,2,4-Trimethylbenzene in a 20' deep sample was above the Vapor Intrusion into Buildings screening value, however as noted above, with the lower levels and 20' of soil cap, the vapor risk is mitigated. The full lab analysis report is contained in Appendix B. 4.0 Conclusions and Recommendations Conclusions The soil sampling and analysis data indicated there is contamination in the former tanks/ust area along the southern portion of the Site that exceeds current DEQ Vapor Intrusion into Buildings and Leaching to Ground Water risk screening pathways. Also, the data indicated that there is historic fill at and near the 20' depth throughout the areas sampled (2/3rds of the Site) that is contaminated with primarily lube oil, lead as well as the PAH/SVOC's and one VOC (no chlorinated compounds) that are constituents in petroleum lube oils. Primarily the lead and the PAH' s/svoc' s and VOC are above several of the generic soil screening pathways. The data indicates the Site is contaminated with multiple compounds not addressed or covered by DEQ's late 1990's NFA (No Further Action) determination for the Site and thus the Site is deemed to be 'contaminated' and requires further sampling and risk assessment activities with DEQ oversight before a full Site wide NFA can be issued for all contaminants that are present. Because the worst of the contamination appears to be around the 20' depth, it is likely that the contamination will be able to remain in-place, once reviewed and approved by DEQ. However, because of the elevated lead present and the 'loose configuration' of the fill soils, it may be necessary to have a Soil Management Plan in-place to properly handle, store and dispose of those soils that may be encountered or removed in the development of the Site, up to and possibly including RCRA designation of those limited soils as a hazardous waste for lead (D008 EP A/DEQ code). Recommendations: 1. The Site needs to be entered into the DEQ's Voluntary Cleanup Program for oversight and review of the environmental conditions and obtaining DEQ direction/guidance in what additional assessment is needed for the Site to meet regulatory standards for issuance of a Site wide No Further Action determination 9

75 and thereafter development and use. Depending upon DEQ's schedule, this process will likely take about a year or so of total time (waiting to enter the program, completing the DEQ processes and final review and DEQ approval time for the NFA). 2. Additional soil sampling, lab analysis and risk assessment will be required to meet DEQ's regulatory requirements (best performed after the current tenant is no longer present so that the entire Site can be evaluated as directed by DEQ). 3. If any soils are removed from the area around 20' deep (investigations, pilings installation, et' cetera); due to the elevated lead levels, any soils removed from that depth area may need to be handled, managed as RCRA hazardous waste (pending confirmation lab analysis of accumulated soils). This completes the Phase 2 Environmental Site Assessment work for the NE Halsey Site. If you have any questions or comments, please contact us at envirosearch@bctonline or via phone at Respectfully Submitted: )}1m1v!JJ\ ~ '/.~1 ~../ ;p.., '.. I -. /#.:. Tim -O ~da;~, R.G Project Geologist 10

76 Limitations This report represents NW EnviroSearch, Inc.'s (NWES) professional opinion and judgment, which is dependent upon the information obtained during performance of consulting and field services. No investigation can be thorough enough to exclude the presence of hazardous substances at a given site; therefore, if specific hazardous substance(s) are not identified during an assessment, such a finding should not be construed as a guarantee of the absence of such substance(s) on the property, but rather the results of services performed within the project scope of work, cost and other limitations. The conclusions and recommendations of this report are made based on readily available information including, for example, observed conditions existing at the Site and laboratory test results of the submitted samples. It must be recognized that changes can occur in subsurface conditions due to the site use or other reasons. Furthermore, the distribution of hazardous substance concentrations in the soil or ground water can vary spatially and over time. The results of chemical analysis are valid as of the date and at the sampling location only. NWES cannot be held accountable for the accuracy of the test data from an independent laboratory or for any analyte quantities falling below the recognized standard detection limits for the method utilized by the independent laboratory. Only specific hazardous substances were tested for and other substances may or may not be present in soil at the Site and our investigation was limited to the soil and one ground water sample with no air sampling performed. Any opinions presented apply to Site conditions existing at the time of the performance of services. NWES is unable to report on or accurately predict events which may impact the Site following performance of the described services, whether occurring naturally or caused by external forces. NWES assumes no responsibility for conditions it is not authorized to investigate or conditions not generally recognized as environmentally unacceptable at the time services are performed. References: USGS Professional Paper 1424-A- Geologic Framework of the Willamette Lowland Aquifer System USGS Professional Paper 1424-B- Hydrogeologic Framework of the Willamette Lowland Aquifer System USDA Soil Conservation System- Soil Survey of Multnomah County, Oregon Water well location information taken from Oregon Water Resources Department records DEQ RBC Site Screening Criteria EPA and DEQ RCRA CFR 40 Hazardous Waste Determination standards. 11

77 Limited Phase 2 Environmental Site Assessment Report SITE Northeast Halsey Site 1512 NE 67 th Avenue Portland, Oregon TABLES Table 1 NE Halsey Site: Soil Data Tables Prepared For: West Coast Self-Storage 39 Castledown Road Pleasanton, CA Attn. Mr. Steve Tangney Vice President, Real Estate N W E N V I R O S E A R C H, I N C.

78 NE Halsey Site---Soil Data Table 1 Units of Measure: mg/kg (PPM=Parts Per Million) Soil Samples Collected 7/27/16 Via GeoProbe DEQ RBC Values Urban Residential Soils DEQ RBC Values Construction Worker DEQ RBC Values Excavation Worker DEQ RBC Values Occupational Soils DEQ DEQ & EPA 1 Volatil. 1 Vapor METHOD Ingest, Leaching to Ingest, Contact To B-1-20 B-2-20 B-3-20 B-4-4 B-5-10 B-6-20 B-6-28 Intrusion 1 Ingest, contact, 1 Ingest, contact Contact 1 1 Vapor Portland Basin Volatil. To 1 Leaching to Intrusion Background REPORTING Inhalation ANALYSIS ANALYTE OR PARAMETER mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg (RBC) Ground Outdoor into Bldg. LIMIT mg/kg Air (RBC) (RBC) Water (RBC) Inhalation (RBC) Inhalation (RBC) Outdoor Air Ground Water Inhalation (RBC) into Bldg. (RBC) Concentrations (RBC) (RBC) mg/kg mg/kg mg/kg mg/kg mg/kg for Metals in mg/kg mg/kg mg/kg mg/kg Soils Diesel Range Organics ND ND ND ND ND ND ND 2,200 >Max >Max 9,500 4,600 >Max 14,000 >Max >Max >Max - NWTPH-Dx Oil Range Organics NWTPH-Gx Gasoline Range Organics ND ND ND 12.7 ND 2,500 5, ,700 >Max 20,000 69,000 >Max Total Metals by EPA 6020 (ICPMS) TCLP Metals by EPA 6020 (ICPMS) PAHS/ Semivolatile Organic Compounds by EPA 8270D VOC s Volatile Organic Compounds by EPA 8260B Antimony nt nt nt 3.39 nt NV NV NV ~ NV NV NV NV NV ~ Arsenic nt nt nt 9.65 nt 1.0 NV NV ~ NV NV ~ 8.8 Beryllium nt ND nt nt nt 310 NV NV ~ NV NV ~ Cadmium nt nt nt 3.89 nt 160 NV NV ~ 350 9,700 1,100 NV NV ~ 0.63 Chromium nt nt nt 27.4 nt 230,000 NV NV ~ 530,000 >Max >Max NV NV ~ 76 Copper nt nt nt 144 nt 6200 NV NV ~ NV NV ~ 34 Lead nt nt nt 805 nt 400 NV NV NV NV Mercury nt nt nt nt 47 NV NV ~ 110 2, NV NV ~ 0.23 Nickel nt nt nt 24 nt 3100 NV NV ~ NV NV ~ 47 Selenium nt ND ND nt nt ND nt Silver nt ND nt nt ND nt 780 NV NV ~ 1,800 49,000 5,800 NV NV ~ 0.82 Thallium nt ND ND nt nt ND nt Zinc nt nt nt 579 nt Arsenic nt ND ND nt nt ND nt 5.0 Barium nt nt nt 1.15 nt 100 Cadmium nt ND ND nt nt ND nt 1.0 Chromium nt ND ND nt nt ND nt 5.0 Not Applicable: RBC screening values do not exist for TCLP Metals Lead nt nt nt 1.23 nt 5.0 Mercury nt ND ND nt nt ND nt 0.2 Selenium nt ND ND nt nt ND nt 1.0 Silver nt ND ND nt nt ND nt 5.0 Acenaphthene ND ND nt nt ND nt 9,400 >Max >Max >Csat 21, ,000 70,000 >Max >Max >Csat - Acenaphthylene nt nt nt Anthracene ND nt nt nt 47,000 >Max >Max >Csat 110,000 >Max 350,000 >Max >Max >Csat - Benz(a)anthracene nt nt 1.97 nt 0.34 >Csat >Csat >Csat >Csat Benzo(a)pyrene nt nt 3.49 nt NV NV NV NV >Csat - Benzo(b)fluoranthene nt nt 4.55 nt 0.34 NV NV >Csat NV NV >Csat Benzo(k)fluoranthene nt nt 1.24 nt 3.4 NV NV >Csat 240 6, NV NV >Csat - Benzo(g,h,i)perylene nt nt 3.95 nt Chrysene nt nt 3.96 nt 34 NV NV >Csat 2,400 67, NV NV >Csat - Dibenz(a,h)anthracene ND nt nt nt NV NV >Csat NV NV >Csat - Dibenozofuran ND ND ND nt nt ND nt Fluoranthene nt nt 6.63 nt 4,800 NV NV >Csat 10, ,000 30,000 NV NV >Csat - Fluorene ND nt nt nt 6,300 >Max >Max >Csat 14, ,000 47,000 >Max >Max >Csat - Indeno(1,2,3-cd)pyrene nt nt 3.22 nt 0.34 NV NV >Csat NV NV >Csat - 1-Methylnaphthalene ND nt nt nt Methylnaphthalene ND nt nt 0.33 nt Naphthalene nt nt 1.08 nt , Phenanthrene nt nt 3.98 nt Pyrene nt nt 8.4 nt 3,600 >Csat >Csat >Csat 7, ,000 23,000 >Csat >Csat >Csat - Benzene ND ND nt nt ND nt , n- Butylbenzene ND nt nt ND nt sec- Butylbenzene ND nt nt ND nt tert- Butylbenzene ND nt nt ND nt Ethylbenzene ND ND 0.08 nt nt ND nt ,700 49, Isopropylbenzene (Cumene) ND nt nt ND nt 7,000 >Csat >Csat , ,000 57,000 >Csat >Csat >Csat - 4-Isopropyltoluene ND nt nt nt Naphthalene ND ND nt nt ND nt , n-propylbenzene ND nt nt ND nt Toluene ND ND ND nt nt nt 12,000 >Csat >Csat , ,000 88,000 >Csat >Csat 490-1,2,4-Trimethylbenzene ND nt nt ND nt ,000 54,000 2, ,3,5-Trimethylbenzene ND ND 0.31 nt nt ND nt 1,600 >Max >Max 110 3,500 98,000 12,000 >Max >Max Xylene s total ND nt nt ND nt 2,900 >Csat ,000 >Csat 560,000 25,000 >Csat >Csat NOTE: Other VOC s were analyzed and were found to be ND (non-detect). See the full lab report attached in the Appendices of the report. Notes: mg/kg and mg/l are equivalent to parts per million (ppm) ND indicates analyte not detected above method reporting limit nt indicates analyte not tested - indicates no state cleanup criteria currently exists for specific detection limits >Max indicates that the constituent RBC for this pathway is calculated as greater than 1,000,000 mg/kg or 1,000,000 mg/l. Therefore, this substance is deemed not to pose risks in this scenario. NV indicates that this chemical is considered nonvolatile for purposes of the exposure calculations. >Csat indicates that soil RBC exceeds the limit of three-phase equilibrium partitioning. Soil concentrations in excess of Csat indicate that free product might be present. 1 DEQ Risk Based Concentration (RBC) for soils: Urban Residential, Occupational, Construction and Excavation Worker (Updated 11/01/2015) ~ indicates Leaching- to- Groundwater RBC s are not provided for most inorganic chemicals All other PAH/ SVOC s and VOC s that were tested were found to be Not Detected. See laboratory report for further details. Chromium (III) RBC Standard used for Chromium. Analytical detection limits vary. See laboratory reports for specific detection limits. 9/7/2016 RCRA Hazardous Waste Threshold Not Applicable Not Applicable

79 Limited Phase 2 Environmental Site Assessment Report SITE Northeast Halsey Site 1512 NE 67 th Avenue Portland, Oregon Appendix A o Figure 1: USGS Topo Area Map o Figure 2: Site Map Prepared For: West Coast Self-Storage 39 Castledown Road Pleasanton, CA Attn. Mr. Steve Tangney Vice President, Real Estate Appendix A N W E N V I R O S E A R C H, I N C.

80 ~ DELORME Topo North America 10 Figure 1 Area USGS Topo Map z f ' ~ 0:: > fii_ Nf.I:II.INCQCK_ct Nf_ULLA~tO.OK... NEJ:ii\NCOCK.SI > H vi R uj 2l Data use subject to license. Delorme. Topo North America r 1 o. TN ~ MN (15.4 E) Scale 1 : 4,000 ~~ :~~..,~- ~ ~ 1 = ft Data Zoom 15 6

81 Site Map Figure 2

82 Limited Phase 2 Environmental Site Assessment Report SITE Northeast Halsey Site 1512 NE 67 th Avenue Portland, Oregon Appendix B o Project Photos: 1-10 o Boring Logs Prepared For: West Coast Self-Storage 39 Castledown Road Pleasanton, CA Attn. Mr. Steve Tangney Vice President, Real Estate Appendix B N W E N V I R O S E A R C H, I N C.

83 Photo 1) View to the northeast across NE 67 th, showing most of the Site that is currently leased by a construction company for supplies/materials storage for a nearby project. Photo 2) Looking east across the Site from NE 67 th gas/service station building/fuel island area. and the former location of the

84 Photo 3) View to the southern portion of the Site and the former tanks nest/ust s (near gravel pile) where removal occurred of the tanks and some soils many years ago. Photo 4) Locates markings onsite and the general area of B-6.

85 Photo 5) Sample of soil cores showing petroleum staining. Photo 6) Variations in soils onsite related to fill soils imported to the Site, contamination/staining of some deeper soils and limited debris.

86 Photo 7) Another example of a soil core, showing variations as well as petroleum staining. Photo 8) Close-up photo showing debris in fill, common at deeper depths; including aluminum metal pieces and some wood bark debris.

87 Photo 9) Additional soil core example and staining. Photo 10) All 6 borings were closed as per State of Oregon standards.

88 Project: NE Halsey Project Location: Project Number: Date(s) Drilled Drilling Method Drill Rig Type Groundwater Level and Date Measured Borehole Backfill Logged By Tim O'Gara, R.G. Drill Bit Size/Type Drilling Contractor Sampling Method(s) Location Log of Boring B-1 Checked By Sheet 1 of 1 Total Depth of Borehole Approximate Surface Elevation Hammer Data ~.5 Q s I 1 ~ I I= 1 ~ E l.~ ;:, i' c: r- z ~ ~ Q) Q) ~ ' 0. ~ a E E Jl co co ~ w C/) (/) oi 0 c:: ~ Cl)! Q) 0:::: C) -~= co c: ~} ~ ~25 :E SP SM SM ML - C) 0..J _g.c a. ~ MATERIAL DESCRIPTION.. : : ~...- Medium Sand, tan. no odor staining starts at 8 feet -. ::: ~.... : ~..... il :... =- -. : - :.:~ - ': :: ::- - ~..r- :. :r- ::-. :..... ~.. : 'r-. Medium Sand and Silt, gray, stained. but no hydrocarbon r- odor ~ - ''. 'r Silty Sand, black, wood chips, hydrocarbon odor.... Silt, brown, no hydrocarbon odor? 'r-.. :r- :. : 'r-. 'r- 'r- 'r- ~. 'r REMARKS AND OTHER TESTS

89 Project: NE Halsey Project Location: Project Number: Log of Boring B-2 Sheet 1 of 1 ~~=) Logged By Tim O'Gara, R.G. Checked By Drilling Drill Bit Total Depth Method Size/Type of Borehole Drill Rig Drilling Approximate Type Contractor Surface Elevation Groundwater Level Sampling Hammer and Date Measured Method(s) Data Borehole Backfill Location B c s - II).8 'iii E l ~ ~ I ~ c: 1- z 0) i!!!~ (I) Cl. 0) ~.9 iij (.) ~ c: :c 1S. E E E ~.!! Q. as as C'O ~ ~ jjj CI'J Cf) ~:0 ~ (!) - 0 SP MATERIAL DESCRIPTION Medium Sand. tan to brown.. ~ :~ ~...,~... ~ :: ~.. r- ~ :::f-. ~: :r... r.:,f-. ~ :: ~.. - ~... :-: - 5- ':-.:~,...,..., : :: - - :..~f f ': :r~ -.. It f- '..... ~ :::... :..., - SM Silty Sand, dark brown. no odor ~ -. ~.! -. ~. j.. SM Silty Sand. black, hydrocarbon odor 0 I. ~ ~ I SP... Medium to fine sand, brown, no hydrocarbon odor. ~:-. rf-. ~ J :: t;: ~! - I. f ~ i - 30 ~ (.) REMARKS AND OTHER TESTS

90 Project: NE Halsey Project Location: Project Number: Date(s) Drilled Drilling Method Drill Rig Type Groundwater Level and Date Measured Borehole Backfill Logged By Tim OIGara, R.G. Drill Bit Size/Type Drilling Contractor Sampling Method(S) Location Log of Boring B-3 Checked By Sheet 1 of 1 Total Depth of Borehole Approximate Surface Elevation Hammer Data ~ -'1.!I! Cl I t I J I!;;: ~ j e ~ i ~ (,) - Q) l c:: l!....q E - ;:, z j ~ l Q) ~ E E ' ' w c en en B c:: s In c;; ~ C) -[~!I 8. >- t- 15 c.s ' ::E sw SM sw -SP - ~...I (,) :c c. ~ (!) ::. ' MATERIAL DESCRIPTION Silty Sand, tan, no hydrocarbon odor. moist at 15 ft. ::.~ :::~ ::.~ ~ -... ::: ::.- - ::: ~ ~ : : : ' Silty Sand, black, mise, wood, metal parts, gaskets, etc I 1- - ~ Sand, black, strong hydrocarbon odor I I ::.... : :::-... ::.' ~ :::... : : : ' :::I ',.. Sand, tan. no hydrocrbon odor -.. REMARKS AND OTHER TESTS

91 Project: NE Halsey Project Location: Project Number: Log of Boring 8-4 Sheet 1 of 1 Date(s} Drilled Drilling Method Drill Rig Type Groundwater Level and Date Measured Borehole BaCkfill Logged By Tim O'Gara, R.G. Drill Bit Size/Type Drilling Contractor Sampling Method(s) Location Checked By Total Depth of Borehole Approximate Surface Elevation Hammer Data i'! ~ i' ~ c: ~ ~ E ~ ~ z.q 4) ~.&; Q. 2 e e ~ '5. 4) 4) co co w c rn rn c: s! 1/J u; 4) 01 0:::: Cl.s (ij.~ :.~ 't:.&; Q. E ~ ~ co e ~:0 :E (!) SM ~ ~ ~ 1- ~ 1- MATERIAL DESCRIPTION Sily Sand, light stain, but no odor at ft REMARKS AND OTHER TESTS! j 0 J I j J ;,:=: I ~ I ~ (.) ~ ~ ~ 1- ~ ~ ~ ~ 1- - ~ - ~ '

92 Project: NE Halsey Project Location: Project Number: Date(s) Drilled Drilling Method Drill Rig Type Groundwater Level and Date Measured Borehole Backfdl Logged By Tim O'Gara, R.G. Drill Bit Size/Type Drilling Contractor Sampling Method(s) Location Log of Boring 8-5 Checked By Sheet 1 of 1 Total Depth of Borehole Approximate Surface Elevation Hammer Data l c::! 0 ;o::l.8 E -G) :::1 z ~ &: -! -! ~ a E E s Cl) w 0 ~ (J) - ' c:: ill 1/) iii Cl) ~ C) ~.9 ni.q i~ I: &: Q. ' e E ~ ~ ~:0 ~ (!) SM ~ Silty Sand, tan MATERIAL DESCRIPTION. REMARKS AND OTHER TESTS! j 0 I I J 1!;;: j i.~ t- 1 ~ SM SM Silty Sand and misc. rubble (wood chips, metal pieces, t- etc.) black. hydrocarbon odor ~ Silty Sand. black, misc. rubble, consisting of wood chips, ~ sawdust, metals pieces, oil contaminated paper did not hit clean bottom in this boring at 25 ft f f- -

93 Project: NE Halsey Project Location: Project Number: Oate(s) Drilled Drilling Method Drill Rig Type Groundwater Level and Date Measured Borehole Backfill Logged By Tim O'Gara, R.G. Drill Bit Size/Type Drilling Contractor Sampling Method(s) Location Log of Boring 8-6 Sheet 1 of 1 Checked By Total Depth of Borehole Approximate Surface Elevation Hammer Data ~ :1 0 I I J 1 I ~ CJ - i.q E :I c: z l I! a! ~! w E ~ ~ ~ c: -m u; Q) 0:: Cl ~~ E ~ ~:0! ~...I n; (.) c: :c Q..$ (\:1 e ::! (.!) SM SM SM ML sw... - Silty Sand, some gravel. tan MATERIAL DESCRIPTION Silty Sand, black, some wood and metal rubble, mild - hydrocarbon odor. ~. ~ - ~ - ~ - ~ - - ~ - ~ Silty Sand, rubble, increasing wood waste and chips, metal pieces at 20 ft, hydrocarbon odor Sandy Silt brown, minor hydrocarbon odor -. - ~. ~... - ~ Sand, tan, no odor.... REMARKS AND OTHER TESTS

94 Limited Phase 2 Environmental Site Assessment Report SITE Northeast Halsey Site 1512 NE 67 th Avenue Portland, Oregon Appendix C o Lab Analysis Report: Apex Lab Prepared For: West Coast Self-Storage 39 Castledown Road Pleasanton, CA Attn. Mr. Steve Tangney Vice President, Real Estate N W E N V I R O S E A R C H, I N C. Appendix C

95 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax Thursday, August 18, 2016 Mike Gibson NW EnviroSearch P.O. Box 1290 Oregon City, OR RE: NE Halsey / [none] Enclosed are the results of analyses for work order A6G0944, which was received by the laboratory on 7/27/2016 at 11:10:00AM. Thank you for using Apex Labs. We appreciate your business and strive to provide the highest quality services to the environmental industry. If you have any questions concerning this report or the services we offer, please feel free to contact me by at: pnerenberg@apex-labs.com, or by phone at Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 1 of 51

96 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Sample ID Laboratory ID Matrix Date Sampled Date Received B-1-20 B-2-20 B-3-20 B-4-4 B-5-10 B-6-20 B-6-28 A6G Soil 07/27/16 08:17 07/27/16 11:10 A6G Soil 07/27/16 08:38 07/27/16 11:10 A6G Soil 07/27/16 09:02 07/27/16 11:10 A6G Soil 07/27/16 09:27 07/27/16 11:10 A6G Soil 07/27/16 09:38 07/27/16 11:10 A6G Soil 07/27/16 10:10 07/27/16 11:10 A6G Soil 07/27/16 10:28 07/27/16 11:10 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 2 of 51

97 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL CASE NARRATIVE Work Order: A6G0944 Amended Report Revision 1: This report supersedes all previous reports. Analysis of total metals on samples B-2-20, B-3-20, and B-6-20 were requested to be added after the previous report version had been completed. Philip Nerenberg Lab Director 8/18/16 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 3 of 51

98 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed Diesel ND mg/kg dry 5 07/28/16 08:10 Oil Surrogate: o-terphenyl (Surr) Recovery: 99 % Limits: % B-2-20 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 1 07/28/16 08:51 Oil Surrogate: o-terphenyl (Surr) Recovery: 96 % Limits: % B-3-20 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 5 07/28/16 08:10 Oil Surrogate: o-terphenyl (Surr) Recovery: 100 % Limits: % B-4-4 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 5 07/28/16 08:51 Oil Surrogate: o-terphenyl (Surr) Recovery: 97 % Limits: % B-5-10 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 5 07/28/16 09:31 Oil Surrogate: o-terphenyl (Surr) Recovery: 94 % Limits: % B-6-20 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 5 07/28/16 10:11 Oil Surrogate: o-terphenyl (Surr) Recovery: 98 % Limits: % B-6-28 (A6G ) Matrix: Soil Batch: Diesel ND mg/kg dry 1 07/28/16 11:12 Oil Surrogate: o-terphenyl (Surr) Recovery: 98 % Limits: % Method NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx Notes F-03 S-05 F-03 F-03 S-05 S-05 S-05 F-03 S-05 F-03, Q-42 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 4 of 51

99 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed Gasoline Range Organics ND mg/kg dry 50 07/28/16 17:53 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 99 % Limits: % 1 1,4-Difluorobenzene (Sur) 90 % Limits: % B-2-20 (A6G ) Matrix: Soil Batch: Gasoline Range Organics mg/kg dry 50 07/28/16 18:50 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 136 % Limits: % 1 1,4-Difluorobenzene (Sur) 93 % Limits: % B-3-20 (A6G RE1) Matrix: Soil Batch: Gasoline Range Organics mg/kg dry /29/16 18:35 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 96 % Limits: % 1 1,4-Difluorobenzene (Sur) 89 % Limits: % B-4-4 (A6G ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 07/28/16 19:49 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1 1,4-Difluorobenzene (Sur) 92 % Limits: % B-5-10 (A6G ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 07/28/16 20:17 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1 1,4-Difluorobenzene (Sur) 92 % Limits: % B-6-20 (A6G ) Matrix: Soil Batch: Gasoline Range Organics mg/kg dry 50 07/28/16 20:44 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1 1,4-Difluorobenzene (Sur) 93 % Limits: % B-6-28 (A6G ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 07/28/16 21:11 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 99 % Limits: % 1 1,4-Difluorobenzene (Sur) 92 % Limits: % Method NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) Notes V-15 V-15 F-13 V-15 F-13 V-15 V-15 V-15 V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 5 of 51

100 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed Acetone ND ug/kg dry 50 07/28/16 17:53 Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloropropane ND Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND Method 5035/8260B Notes Q-31 V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 6 of 51

101 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed cis-1,3-dichloropropene ND ug/kg dry 50 trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Methylene chloride ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 111 % Limits: % 1 Toluene-d8 (Surr) 97 % Limits: % 4-Bromofluorobenzene (Surr) 108 % Limits: % Method 5035/8260B Notes V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 7 of 51

102 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-2-20 (A6G ) Matrix: Soil Batch: Date Analyzed Acetone ND ug/kg dry 50 07/28/16 18:50 Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloropropane ND Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND Method 5035/8260B Notes Q-31 V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 8 of 51

103 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-2-20 (A6G ) Matrix: Soil Batch: Date Analyzed cis-1,3-dichloropropene ND ug/kg dry 50 trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene 4-Isopropyltoluene Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Methylene chloride ND Naphthalene ND n-propylbenzene Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 114 % Limits: % 1 Toluene-d8 (Surr) 96 % Limits: % 4-Bromofluorobenzene (Surr) 109 % Limits: % Method 5035/8260B Notes R-02 V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 9 of 51

104 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-2-20 (A6G RE1) Matrix: Soil Batch: Date Analyzed Method 1,2,4-Trimethylbenzene ug/kg dry /29/16 19: /8260B Notes V-15 Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 108 % Limits: % 1 Toluene-d8 (Surr) 97 % Limits: % 4-Bromofluorobenzene (Surr) 108 % Limits: % B-3-20 (A6G ) Matrix: Soil Batch: Acetone ND ug/kg dry 50 07/28/16 19:18 Benzene Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloropropane ND Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND /8260B M-02 Q-31 V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 10 of 51

105 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-3-20 (A6G ) Matrix: Soil Batch: Date Analyzed trans-1,2-dichloroethene ND ug/kg dry 50 1,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene Hexachlorobutadiene ND Hexanone ND Isopropylbenzene 4-Isopropyltoluene Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Methylene chloride ND Naphthalene n-propylbenzene Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride ND m,p-xylene o-xylene Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 113 % Limits: % 1 Method 5035/8260B Notes V-15 R-02 R-02 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 11 of 51

106 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-3-20 (A6G ) Matrix: Soil Batch: Date Analyzed Surrogate: Toluene-d8 (Surr) Recovery: 99 % Limits: % 1 4-Bromofluorobenzene (Surr) 108 % Limits: % B-6-20 (A6G ) Matrix: Soil Batch: Acetone ND ug/kg dry 50 07/28/16 20:44 Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloropropane ND Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND Method 5035/8260B 5035/8260B Notes V-15 V-15 Q-31 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 12 of 51

107 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution B-6-20 (A6G ) Matrix: Soil Batch: Date Analyzed 1,3-Dichloropropane ND ug/kg dry 50 2,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Methylene chloride ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 113 % Limits: % 1 Toluene-d8 (Surr) 98 % Limits: % 4-Bromofluorobenzene (Surr) 105 % Limits: % Method 5035/8260B Notes V-15 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 13 of 51

108 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 10 07/28/16 16:30 Acenaphthylene Anthracene ND Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene ND Dibenzofuran ND Fluoranthene Fluorene ND Indeno(1,2,3-cd)pyrene Methylnaphthalene ND Methylnaphthalene ND Naphthalene Phenanthrene Pyrene Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 89 % Limits: % p-terphenyl-d14 (Surr) 110 % Limits: % Method EPA 8270D (SIM) Notes M-02 M-02 M-02 M-02 B Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 14 of 51

109 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution B-2-20 (A6G ) Matrix: Soil Batch: Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene Date Analyzed ug/kg dry 10 07/28/16 16:59 Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 91 % Limits: % p-terphenyl-d14 (Surr) 117 % Limits: % Method EPA 8270D (SIM) Notes M-02 M-02 M-02 M-02 B-02 B B Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 15 of 51

110 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution B-3-20 (A6G ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 10 07/28/16 17:28 Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran ND Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 89 % Limits: % p-terphenyl-d14 (Surr) 115 % Limits: % Method EPA 8270D (SIM) Notes M-02 M-02 M-02 M-02 B-02 B B Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 16 of 51

111 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution B-6-20 (A6G ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 10 07/28/16 17:57 Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran ND Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 83 % Limits: % p-terphenyl-d14 (Surr) 108 % Limits: % Method EPA 8270D (SIM) Notes M-02 M-02 M-02 M-02 B-02 B B Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 17 of 51

112 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte B-2-20 (A6G ) Batch: Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Result MDL Reporting Limit Matrix: Soil Units Dilution Date Analyzed mg/kg dry 10 08/17/16 19:07 Selenium ND Silver ND Thallium ND Zinc B-3-20 (A6G ) Batch: Antimony Arsenic Matrix: Soil mg/kg dry 10 08/17/16 19:10 Beryllium ND Cadmium Chromium Copper Lead Mercury Nickel Selenium ND Silver Thallium ND Zinc Method EPA 6020A EPA 6020A Notes B-6-20 (A6G ) Matrix: Soil Batch: Antimony Arsenic Beryllium Cadmium Chromium mg/kg dry 10 08/17/16 19:13 EPA 6020A Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 18 of 51

113 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte B-6-20 (A6G ) Copper Lead Mercury Nickel Result MDL Reporting Limit Matrix: Soil Units Dilution Date Analyzed mg/kg dry 10 Selenium ND Silver ND Thallium ND Zinc Method EPA 6020A Notes Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 19 of 51

114 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS TCLP Metals by EPA 6020 (ICPMS) Analyte B-2-20 (A6G ) Batch: Result MDL Reporting Limit Matrix: Soil Units Dilution Date Analyzed Arsenic ND mg/l 5 08/03/16 19:21 Barium Cadmium ND Chromium ND Lead Mercury ND Selenium ND Silver ND B-3-20 (A6G ) Batch: Matrix: Soil Arsenic ND mg/l 5 08/03/16 19:24 Barium Cadmium ND Chromium ND Lead Mercury ND Selenium ND Silver ND B-6-20 (A6G ) Batch: Matrix: Soil Arsenic ND mg/l 5 08/03/16 19:28 Barium Cadmium ND Chromium ND Lead Mercury ND Selenium ND Silver ND Method 1311/6020A 1311/6020A 1311/6020A Notes Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 20 of 51

115 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Analyte Result MDL Reporting Limit Units Dilution B-1-20 (A6G ) Matrix: Soil Batch: Date Analyzed Method % Solids % by Weight 1 07/29/16 08:32 EPA 8000C Notes B-2-20 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C B-3-20 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C B-4-4 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C B-5-10 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C B-6-20 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C B-6-28 (A6G ) Matrix: Soil Batch: % Solids % by Weight 1 07/29/16 08:32 EPA 8000C Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 21 of 51

116 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 3546 (Fuels) Blank ( BLK1) Prepared: 07/27/16 13:41 Analyzed: 07/27/16 19:22 NWTPH-Dx Diesel ND mg/kg wet Oil ND Surr: o-terphenyl (Surr) Recovery: 106 % Limits: % Dilution: 1x LCS ( BS1) Prepared: 07/27/16 13:41 Analyzed: 07/27/16 19:41 NWTPH-Dx Diesel mg/kg wet % Surr: o-terphenyl (Surr) Recovery: 108 % Limits: % Dilution: 1x Duplicate ( DUP2) Prepared: 07/27/16 15:27 Analyzed: 07/28/16 10:11 Soil QC Source Sample: B-6-28 (A6G ) NWTPH-Dx Diesel ND mg/kg dry ND % Oil % Surr: o-terphenyl (Surr) Recovery: 101 % Limits: % Dilution: 1x F-03, Q-04 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 22 of 51

117 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Blank ( BLK1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 11:49 NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg wet Surr: 4-Bromofluorobenzene (Sur) Recovery: 95 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 89 % % LCS ( BS2) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 11:22 NWTPH-Gx (MS) Gasoline Range Organics mg/kg wet % Surr: 4-Bromofluorobenzene (Sur) Recovery: 99 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 91 % % Duplicate ( DUP1) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 18:21 V-15 QC Source Sample: B-1-20 (A6G ) NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg dry *** 30% Surr: 4-Bromofluorobenzene (Sur) Recovery: 104 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 91 % % Duplicate ( DUP2) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 21:38 V-15 QC Source Sample: B-6-28 (A6G ) NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg dry *** 30% Surr: 4-Bromofluorobenzene (Sur) Recovery: 103 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 92 % % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 23 of 51

118 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Blank ( BLK1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:55 NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg wet Surr: 4-Bromofluorobenzene (Sur) Recovery: 96 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 94 % % LCS ( BS2) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:28 NWTPH-Gx (MS) Gasoline Range Organics mg/kg wet % Surr: 4-Bromofluorobenzene (Sur) Recovery: 94 % Limits: % Dilution: 1x 1,4-Difluorobenzene (Sur) 95 % % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 24 of 51

119 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 11: /8260B Acetone ND ug/kg wet Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloroprop ND ane Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND Q-31 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 25 of 51

120 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 11:49 cis-1,2-dichloroethene ND ug/kg wet trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methyl-2-pentanone ND (MiBK) Methyl tert-butyl ether ND (MTBE) Methylene chloride ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 26 of 51

121 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Blank ( BLK1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 11:49 1,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surr: 1,4-Difluorobenzene (Surr) Recovery: 110 % Limits: % Dilution: 1x Toluene-d8 (Surr) 99 % % 4-Bromofluorobenzene (Surr) 106 % % Soil LCS ( BS1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 10: /8260B Acetone ug/kg wet % Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane Chlorotoluene Chlorotoluene ,2-Dibromo-3-chloroprop ane Dibromochloromethane Q-31 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 27 of 51

122 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil LCS ( BS1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 10:55 1,2-Dibromoethane (EDB) ug/kg wet Dibromomethane ,2-Dichlorobenzene ,3-Dichlorobenzene ,4-Dichlorobenzene Dichlorodifluoromethane ,1-Dichloroethane ,2-Dichloroethane (EDC) ,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene ,2-Dichloropropane ,3-Dichloropropane ,2-Dichloropropane ,1-Dichloropropene cis-1,3-dichloropropene trans-1,3-dichloropropene Ethylbenzene Hexachlorobutadiene Hexanone Isopropylbenzene Isopropyltoluene Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) Methylene chloride Naphthalene n-propylbenzene Styrene ,1,1,2-Tetrachloroethane ,1,2,2-Tetrachloroethane Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 28 of 51

123 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A LCS ( BS1) Prepared: 07/28/16 09:00 Analyzed: 07/28/16 10:55 Tetrachloroethene (PCE) Toluene ,2,3-Trichlorobenzene ,2,4-Trichlorobenzene ,1,1-Trichloroethane ,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane ,2,3-Trichloropropane ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene Surr: 1,4-Difluorobenzene (Surr) Recovery: 108 % Limits: % Dilution: 1x Toluene-d8 (Surr) 98 % % 4-Bromofluorobenzene (Surr) 105 % % Duplicate ( DUP1) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 18:21 V-15 QC Source Sample: B-1-20 (A6G ) 5035/8260B Acetone ND ug/kg dry *** 30% Benzene ND ND % Bromobenzene ND ND % Bromochloromethane ND ND % Bromodichloromethane ND ND % Bromoform ND ND % Bromomethane ND ND % 2-Butanone (MEK) ND ND % n-butylbenzene ND ND % sec-butylbenzene ND ND % tert-butylbenzene ND ND % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 29 of 51

124 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Duplicate ( DUP1) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 18:21 V-15 Soil QC Source Sample: B-1-20 (A6G ) Carbon tetrachloride ND ND % Chlorobenzene ND ND % Chloroethane ND ND % Chloroform ND ND % Chloromethane ND ND % 2-Chlorotoluene ND ND % 4-Chlorotoluene ND ND % 1,2-Dibromo-3-chloroprop ND ND % ane Dibromochloromethane ND ND % 1,2-Dibromoethane (EDB) ND ND % Dibromomethane ND ND % 1,2-Dichlorobenzene ND ND % 1,3-Dichlorobenzene ND ND % 1,4-Dichlorobenzene ND ND % Dichlorodifluoromethane ND ND % 1,1-Dichloroethane ND ND % 1,2-Dichloroethane (EDC) ND ND % 1,1-Dichloroethene ND ND % cis-1,2-dichloroethene ND ND % trans-1,2-dichloroethene ND ND % 1,2-Dichloropropane ND ND % 1,3-Dichloropropane ND ND % 2,2-Dichloropropane ND ND % 1,1-Dichloropropene ND ND % cis-1,3-dichloropropene ND ND % trans-1,3-dichloropropene ND ND % Ethylbenzene ND ND % Hexachlorobutadiene ND ND % 2-Hexanone ND ND % Q-31 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 30 of 51

125 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Duplicate ( DUP1) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 18:21 V-15 QC Source Sample: B-1-20 (A6G ) Isopropylbenzene ND ug/kg dry --- ND % 4-Isopropyltoluene ND ND % 4-Methyl-2-pentanone ND ND % (MiBK) Methyl tert-butyl ether ND ND % (MTBE) Methylene chloride ND ND % Naphthalene ND ND % n-propylbenzene ND ND % Styrene ND ND % 1,1,1,2-Tetrachloroethane ND ND % 1,1,2,2-Tetrachloroethane ND ND % Tetrachloroethene (PCE) ND ND % Toluene ND ND % 1,2,3-Trichlorobenzene ND ND % 1,2,4-Trichlorobenzene ND ND % 1,1,1-Trichloroethane ND ND % 1,1,2-Trichloroethane ND ND % Trichloroethene (TCE) ND ND % Trichlorofluoromethane ND ND % 1,2,3-Trichloropropane ND ND % 1,2,4-Trimethylbenzene ND ND % 1,3,5-Trimethylbenzene ND ND % Vinyl chloride ND ND % m,p-xylene ND *** 30% o-xylene ND ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 112 % Limits: % Dilution: 1x Toluene-d8 (Surr) 96 % % 4-Bromofluorobenzene (Surr) 108 % % Duplicate ( DUP2) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 21:38 V-15 Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 31 of 51

126 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Duplicate ( DUP2) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 21:38 V-15 Soil QC Source Sample: B-6-28 (A6G ) 5035/8260B Acetone ND ug/kg dry ND % Benzene ND ND % Bromobenzene ND ND % Bromochloromethane ND ND % Bromodichloromethane ND ND % Bromoform ND ND % Bromomethane ND ND % 2-Butanone (MEK) ND ND % n-butylbenzene ND ND % sec-butylbenzene ND ND % tert-butylbenzene ND ND % Carbon tetrachloride ND ND % Chlorobenzene ND ND % Chloroethane ND ND % Chloroform ND ND % Chloromethane ND ND % 2-Chlorotoluene ND ND % 4-Chlorotoluene ND ND % 1,2-Dibromo-3-chloroprop ND ND % ane Dibromochloromethane ND ND % 1,2-Dibromoethane (EDB) ND ND % Dibromomethane ND ND % 1,2-Dichlorobenzene ND ND % 1,3-Dichlorobenzene ND ND % 1,4-Dichlorobenzene ND ND % Dichlorodifluoromethane ND ND % 1,1-Dichloroethane ND ND % 1,2-Dichloroethane (EDC) ND ND % Q-31 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 32 of 51

127 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Duplicate ( DUP2) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 21:38 V-15 QC Source Sample: B-6-28 (A6G ) 1,1-Dichloroethene ND ug/kg dry --- ND % cis-1,2-dichloroethene ND ND % trans-1,2-dichloroethene ND ND % 1,2-Dichloropropane ND ND % 1,3-Dichloropropane ND ND % 2,2-Dichloropropane ND ND % 1,1-Dichloropropene ND ND % cis-1,3-dichloropropene ND ND % trans-1,3-dichloropropene ND ND % Ethylbenzene ND ND % Hexachlorobutadiene ND ND % 2-Hexanone ND ND % Isopropylbenzene ND ND % 4-Isopropyltoluene % 4-Methyl-2-pentanone ND ND % (MiBK) Methyl tert-butyl ether ND ND % (MTBE) Methylene chloride ND ND % Naphthalene ND ND % n-propylbenzene ND ND % Styrene ND ND % 1,1,1,2-Tetrachloroethane ND ND % 1,1,2,2-Tetrachloroethane ND ND % Tetrachloroethene (PCE) ND ND % Toluene ND *** 30% 1,2,3-Trichlorobenzene ND ND % 1,2,4-Trichlorobenzene ND ND % 1,1,1-Trichloroethane ND ND % 1,1,2-Trichloroethane ND ND % Trichloroethene (TCE) ND ND % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 33 of 51

128 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Duplicate ( DUP2) Prepared: 07/27/16 14:10 Analyzed: 07/28/16 21:38 V-15 QC Source Sample: B-6-28 (A6G ) Trichlorofluoromethane ND ND % 1,2,3-Trichloropropane ND ND % 1,2,4-Trimethylbenzene ND *** 30% 1,3,5-Trimethylbenzene ND ND % Vinyl chloride ND ND % m,p-xylene ND ND % o-xylene ND *** 30% Surr: 1,4-Difluorobenzene (Surr) Recovery: 113 % Limits: % Dilution: 1x Toluene-d8 (Surr) 97 % % 4-Bromofluorobenzene (Surr) 100 % % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 34 of 51

129 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11: /8260B Acetone ND ug/kg wet Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND ,2-Dibromo-3-chloroprop ND ane Dibromochloromethane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 35 of 51

130 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:55 cis-1,2-dichloroethene ND ug/kg wet trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methyl-2-pentanone ND (MiBK) Methyl tert-butyl ether ND (MTBE) Methylene chloride ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 36 of 51

131 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Blank ( BLK1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:55 1,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surr: 1,4-Difluorobenzene (Surr) Recovery: 113 % Limits: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 103 % % LCS ( BS1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11: /8260B Acetone ug/kg wet % Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane Chlorotoluene Chlorotoluene ,2-Dibromo-3-chloroprop ane Dibromochloromethane Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 37 of 51

132 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A Soil LCS ( BS1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:01 1,2-Dibromoethane (EDB) ug/kg wet Dibromomethane ,2-Dichlorobenzene ,3-Dichlorobenzene ,4-Dichlorobenzene Dichlorodifluoromethane ,1-Dichloroethane ,2-Dichloroethane (EDC) ,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene ,2-Dichloropropane ,3-Dichloropropane ,2-Dichloropropane ,1-Dichloropropene cis-1,3-dichloropropene trans-1,3-dichloropropene Ethylbenzene Hexachlorobutadiene Hexanone Isopropylbenzene Isopropyltoluene Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) Methylene chloride Naphthalene n-propylbenzene Styrene ,1,1,2-Tetrachloroethane ,1,2,2-Tetrachloroethane Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 38 of 51

133 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260B Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 5035A LCS ( BS1) Prepared: 07/29/16 09:14 Analyzed: 07/29/16 11:01 Tetrachloroethene (PCE) Toluene ,2,3-Trichlorobenzene ,2,4-Trichlorobenzene ,1,1-Trichloroethane ,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane ,2,3-Trichloropropane ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene Surr: 1,4-Difluorobenzene (Surr) Recovery: 113 % Limits: % Dilution: 1x Toluene-d8 (Surr) 96 % % 4-Bromofluorobenzene (Surr) 101 % % Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 39 of 51

134 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 3546 Soil Blank ( BLK1) Prepared: 07/27/16 15:23 Analyzed: 07/28/16 10:13 EPA 8270D (SIM) Acenaphthene ND ug/kg wet Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Dibenzofuran ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Methylnaphthalene ND Methylnaphthalene Naphthalene Phenanthrene ND Pyrene ND B-02 B B Surr: 2-Fluorobiphenyl (Surr) Recovery: 92 % Limits: % Dilution: 1x p-terphenyl-d14 (Surr) 108 % % LCS ( BS1) Prepared: 07/27/16 15:23 Analyzed: 07/28/16 10:42 EPA 8270D (SIM) Acenaphthene ug/kg wet % Acenaphthylene % Anthracene % Benz(a)anthracene % Benzo(a)pyrene % Benzo(b)fluoranthene % Benzo(k)fluoranthene % Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 40 of 51

135 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 3546 Soil LCS ( BS1) Prepared: 07/27/16 15:23 Analyzed: 07/28/16 10:42 Benzo(g,h,i)perylene % Chrysene % Dibenz(a,h)anthracene % Dibenzofuran % Fluoranthene % Fluorene % Indeno(1,2,3-cd)pyrene % Methylnaphthalene % Methylnaphthalene % Naphthalene % Phenanthrene % Pyrene % B-02 B B Surr: 2-Fluorobiphenyl (Surr) Recovery: 83 % Limits: % Dilution: 1x p-terphenyl-d14 (Surr) 99 % % Matrix Spike ( MS1) Prepared: 07/27/16 15:23 Analyzed: 07/28/16 18:26 QC Source Sample: B-6-20 (A6G ) EPA 8270D (SIM) Acenaphthene ug/kg dry % Acenaphthylene % Anthracene % Benz(a)anthracene % Benzo(a)pyrene % Benzo(b)fluoranthene % Benzo(k)fluoranthene % Benzo(g,h,i)perylene % Chrysene % Dibenz(a,h)anthracene % Dibenzofuran % Fluoranthene % Fluorene % Indeno(1,2,3-cd)pyrene % Q-02 Q-03 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 41 of 51

136 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 3546 Matrix Spike ( MS1) Prepared: 07/27/16 15:23 Analyzed: 07/28/16 18:26 Soil QC Source Sample: B-6-20 (A6G ) 1-Methylnaphthalene % Methylnaphthalene % Naphthalene % Phenanthrene % Pyrene % B-02 B B Q-03 Q-03 Surr: 2-Fluorobiphenyl (Surr) Recovery: 81 % Limits: % Dilution: 10x p-terphenyl-d14 (Surr) 105 % % Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 42 of 51

137 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 3051A Soil Blank ( BLK1) Prepared: 08/17/16 10:50 Analyzed: 08/17/16 18:37 EPA 6020A Antimony ND mg/kg wet Arsenic ND Beryllium ND Cadmium ND Chromium ND Copper ND Lead ND Mercury ND Nickel ND Selenium ND Silver ND Thallium ND Zinc ND LCS ( BS1) Prepared: 08/17/16 10:50 Analyzed: 08/17/16 19:01 EPA 6020A Antimony mg/kg wet % Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Thallium Zinc Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 43 of 51

138 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS TCLP Metals by EPA 6020 (ICPMS) Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 1311/3015 Soil Blank ( BLK1) Prepared: 08/03/16 12:58 Analyzed: 08/03/16 19: /6020A Arsenic ND mg/l Barium ND Cadmium ND Chromium ND Lead ND Mercury ND Selenium ND Silver ND LCS ( BS1) Prepared: 08/03/16 12:58 Analyzed: 08/03/16 19: /6020A Arsenic mg/l % Barium Cadmium Chromium Lead Mercury Selenium Silver TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP TCLP Matrix Spike ( MS1) Prepared: 08/03/16 12:58 Analyzed: 08/03/16 19:31 QC Source Sample: B-6-20 (A6G ) 1311/6020A Arsenic mg/l ND % Barium Cadmium ND Chromium ND Lead Mercury ND Selenium ND Silver ND Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 44 of 51

139 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS TCLP Metals by EPA 6020 (ICPMS) Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch EPA 1311/3015 Soil Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 45 of 51

140 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 QUALITY CONTROL (QC) SAMPLE RESULTS Percent Dry Weight Reporting Analyte Result MDL Limit Units Dil. Spike Amount Source Result %REC %REC Limits RPD RPD Limit Notes Batch Total Solids (Dry Weight) Soil Duplicate ( DUP1) Prepared: 07/28/16 11:09 Analyzed: 07/29/16 08:32 QC Source Sample: B-4-4 (A6G ) EPA 8000C % Solids % by Weight % No Client related Batch QC samples analyzed for this batch. See notes page for more information. Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 46 of 51

141 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 SAMPLE PREPARATION INFORMATION Diesel and/or Oil Hydrocarbons by NWTPH-Dx Prep: EPA 3546 (Fuels) Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method NWTPH-Dx Sampled 07/27/16 08:17 Prepared 07/27/16 15:27 Initial/Final 10.92g/5mL Initial/Final 10g/5mL Factor 0.92 A6G Soil NWTPH-Dx 07/27/16 08:38 07/27/16 15: g/5mL 10g/5mL 0.93 A6G Soil NWTPH-Dx 07/27/16 09:02 07/27/16 15: g/5mL 10g/5mL 0.98 A6G Soil NWTPH-Dx 07/27/16 09:27 07/27/16 15: g/5mL 10g/5mL 0.98 A6G Soil NWTPH-Dx 07/27/16 09:38 07/27/16 15: g/5mL 10g/5mL 0.97 A6G Soil NWTPH-Dx 07/27/16 10:10 07/27/16 15: g/5mL 10g/5mL 0.93 A6G Soil NWTPH-Dx 07/27/16 10:28 07/27/16 15: g/5mL 10g/5mL 0.98 Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method NWTPH-Gx (MS) Sampled 07/27/16 08:17 Prepared 07/27/16 14:10 Initial/Final 5.277g/5mL Initial/Final 5g/5mL Factor 0.95 A6G Soil NWTPH-Gx (MS) 07/27/16 08:38 07/27/16 14: g/5mL 5g/5mL 1.00 A6G Soil NWTPH-Gx (MS) 07/27/16 09:27 07/27/16 14: g/5mL 5g/5mL 0.86 A6G Soil NWTPH-Gx (MS) 07/27/16 09:38 07/27/16 14: g/5mL 5g/5mL 0.98 A6G Soil NWTPH-Gx (MS) 07/27/16 10:10 07/27/16 14: g/5mL 5g/5mL 0.97 A6G Soil NWTPH-Gx (MS) 07/27/16 10:28 07/27/16 14: g/5mL 5g/5mL 0.94 Batch: A6G RE1 Soil NWTPH-Gx (MS) 07/27/16 09:02 07/27/16 14: g/5mL 5g/5mL 0.84 Volatile Organic Compounds by EPA 8260B Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method 5035/8260B Sampled 07/27/16 08:17 Prepared 07/27/16 14:10 Initial/Final 5.277g/5mL Initial/Final 5g/5mL Factor 0.95 A6G Soil 5035/8260B 07/27/16 08:38 07/27/16 14: g/5mL 5g/5mL 1.00 A6G Soil 5035/8260B 07/27/16 09:02 07/27/16 14: g/5mL 5g/5mL 0.84 A6G Soil 5035/8260B 07/27/16 10:10 07/27/16 14: g/5mL 5g/5mL 0.97 Batch: A6G RE1 Soil 5035/8260B 07/27/16 08:38 07/27/16 14: g/5mL 5g/5mL 1.00 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 47 of 51

142 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 SAMPLE PREPARATION INFORMATION Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Prep: EPA 3546 Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method EPA 8270D (SIM) Sampled 07/27/16 08:17 Prepared 07/27/16 15:23 Initial/Final 10.28g/5mL Initial/Final 10g/5mL Factor 0.97 A6G Soil EPA 8270D (SIM) 07/27/16 08:38 07/27/16 15: g/5mL 10g/5mL 0.94 A6G Soil EPA 8270D (SIM) 07/27/16 09:02 07/27/16 15: g/5mL 10g/5mL 0.98 A6G Soil EPA 8270D (SIM) 07/27/16 10:10 07/27/16 15: g/5mL 10g/5mL 0.94 Total Metals by EPA 6020 (ICPMS) Prep: EPA 3051A Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method EPA 6020A Sampled 07/27/16 08:38 Prepared 08/17/16 10:50 Initial/Final 0.475g/50mL Initial/Final 0.5g/50mL Factor 1.05 A6G Soil EPA 6020A 07/27/16 09:02 08/17/16 10: g/50mL 0.5g/50mL 1.06 A6G Soil EPA 6020A 07/27/16 10:10 08/17/16 10: g/50mL 0.5g/50mL 1.08 TCLP Metals by EPA 6020 (ICPMS) Prep: EPA 1311/3015 Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method 1311/6020A Sampled 07/27/16 08:38 Prepared 08/03/16 12:58 Initial/Final 5mL/50mL Initial/Final 5mL/50mL Factor 1.00 A6G Soil 1311/6020A 07/27/16 09:02 08/03/16 12:58 5mL/50mL 5mL/50mL 1.00 A6G Soil 1311/6020A 07/27/16 10:10 08/03/16 12:58 5mL/50mL 5mL/50mL 1.00 Percent Dry Weight Prep: Total Solids (Dry Weight) Sample Default RL Prep Lab Number Batch: A6G Matrix Soil Method EPA 8000C Sampled 07/27/16 08:17 Prepared 07/28/16 11:09 Initial/Final 1N/A/1N/A Initial/Final 1N/A/1N/A Factor NA A6G Soil EPA 8000C 07/27/16 08:38 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA A6G Soil EPA 8000C 07/27/16 09:02 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA A6G Soil EPA 8000C 07/27/16 09:27 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA A6G Soil EPA 8000C 07/27/16 09:38 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA A6G Soil EPA 8000C 07/27/16 10:10 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA A6G Soil EPA 8000C 07/27/16 10:28 07/28/16 11:09 1N/A/1N/A 1N/A/1N/A NA Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 48 of 51

143 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 Qualifiers: Notes and Definitions B Analyte detected in an associated blank at a level above the MRL. (See Notes and Conventions below.) B-02 Analyte detected in an associated blank at a level between one-half the MRL and the MRL. (See Notes and Conventions below.) F-03 The result for this hydrocarbon range is elevated due to the presence of individual analyte peaks in the quantitation range that are not representative of the fuel pattern reported. F-13 The chromatographic pattern does not resemble the fuel standard used for quantitation M-02 Due to matrix interference, this analyte cannot be accurately quantified. The reported result is estimated. Q-02 Spike recovery is outside of established control limits due to matrix interference. Q-03 Spike recovery and/or RPD is outside control limits due to the high concentration of analyte present in the sample. Q-04 Spike recovery and/or RPD is outside control limits due to a non-homogeneous sample matrix. Q-31 Estimated Results. Recovery of Continuing Calibration Verification sample below lower control limit for this analyte. Results are likely biased low. Q-42 Matrix Spike and/or Duplicate analysis was performed on this sample. % Recovery or RPD for this analyte is outside laboratory control limits. (Refer to the QC Section of Analytical Report.) R-02 The Reporting Limit for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. S-05 Surrogate recovery is estimated due to sample dilution required for high analyte concentration and/or matrix interference. TCLP This batch QC sample was prepared with TCLP or SPLP fluid from preparation batch V-15 Sample aliquot was subsampled from the sample container. The subsampled aliquot was preserved in the laboratory within 48 hours of sampling. Notes and Conventions: DET ND NR dry RPD MDL Analyte DETECTED Analyte NOT DETECTED at or above the reporting limit Not Reported Sample results reported on a dry weight basis. Results listed as 'wet' or without 'dry'designation are not dry weight corrected. Relative Percent Difference If MDL is not listed, data has been evaluated to the Method Reporting Limit only. WMSC Water Miscible Solvent Correction has been applied to Results and MRLs for volatiles soil samples per EPA 8000C. Batch QC Unless specifically requested, this report contains only results for Batch QC derived from client samples included in this report. All analyses were performed with the appropriate Batch QC (including Sample Duplicates, Matrix Spikes and/or Matrix Spike Duplicates) in order to meet or exceed method and regulatory requirements. Any exceptions to this will be qualified in this report. Complete Batch QC results are available upon request. In cases where there is insufficient sample provided for Sample Duplicates and/or Matrix Spikes, a Lab Control Sample Duplicate (LCS Dup) is analyzed to demonstrate accuracy and precision of the extraction and analysis. Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 49 of 51

144 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch P.O. Box 1290 Project: NE Halsey Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 Blank Policy Apex assesses blank data for potential high bias down to a level equal to ½ the method reporting limit (MRL), except for conventional chemistry and HCID analyses which are assessed only to the MRL. Sample results flagged with a B or B-02 qualifier are potentially biased high if they are less than ten times the level found in the blank for inorganic analyses or less than five times the level found in the blank for organic analyses. For accurate comparison of volatile results to the level found in the blank; water sample results should be divided by the dilution factor, and soil sample results should be divided by 1/50 of the sample dilution to account for the sample prep factor. Results qualified as reported below the MRL may include a potential high bias if associated with a B or B-02 qualified blank. B and B-02 qualifications are not applied to J qualified results reported below the MRL. --- QC results are not applicable. For example, % Recoveries for Blanks and Duplicates, % RPD for Blanks, Blank Spikes and Matrix Spikes, etc. *** Used to indicate a possible discrepancy with the Sample and Sample Duplicate results when the %RPD is not available. In this case, either the Sample or the Sample Duplicate has a reportable result for this analyte, while the other is Non Detect (ND). Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 50 of 51

145 Apex Labs AMENDED REPORT S.W. Garden Place Tigard, OR Phone Fax NW EnviroSearch Project: NE Halsey P.O. Box 1290 Project Number: [none] Reported: Oregon City, OR Project Manager: Mike Gibson 08/18/16 18:21 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Philip Nerenberg, Lab Director Page 51 of 51

146 APPENDIX C WELL LOGS

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151 APPENDIX D UTILITY MAPS

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153 PortlandMaps Page 1 of 3 9/27/2016 SEWER - TV INSPECTION Upstream Address Downstream Address Area Subarea Location District Map Number As Built Install Date Service Status Owner Main Type Pipe Type Pipe Shape Pipe Size Pipe Length Slope Upstream Depth Downstream Depth Upstream Elevation Downstream Elevation Comments Inspection Number Work Order Number 1700 NE 67TH AVE *AT NE BROADWAY 6700 NE HALSEY ST *AT NE 67TH AV STARK S156 LTR NORT IN BES CSML COMBINED GRAVITY MAIN VARIES VARIABLE MATERIAL CIRC CIRCULAR (PIPE)

154 PortlandMaps Page 2 of 3 9/27/2016 Activity Asset ID Address Started Project Weather Completed Operator Flow Depth Reverse Format Media Number Index To Top Distance Joint Length Tv Distance Root Score Root Rating Structural Score Structural Rating Inspection Comments Summary Recommendations SMNFT SMN ABD587 TO ABH NE 67TH AVE 08/27/1979 C 08/27/ N FAIR GRADE AND ALIGN, GOOD PIPE R = 4 Associated Readings Setup From To Clock From Clock To Type Code Description Comments B BEG IN INSPECTION - BEGIN MH AT NE BROADWAY B CMT IN INSPECTION - SEE COMMENTS B CMT IN INSPECTION - SEE COMMENTS BEGIN LONG CRACK END LONG CRACK B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE HL CIRC

155 PortlandMaps Page 3 of 3 9/27/2016 Setup From To Clock From Clock To Type Code Description Comments B WYE LT LATERAL - FACTORY WYE B MVSP CH CHANGE IN PIPE - CHANGE MATERIAL VSP VSP B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B TAP LT LATERAL - FIELD TAP? TAP OR HOLE IN TOP 6^ B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B CMT IN INSPECTION - SEE COMMENTS HL CIRC B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B WYE LT LATERAL - FACTORY WYE B END IN INSPECTION - END MH AT NE HALSEY ST.

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