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Phase II Environmental Site Assessment Report r PHASE IF ENVIRONMENTAL SITE ASSESSMENT REPORT 14.7-Acre Property 13360 and 13560 SW Hall Boulevard Tigard, Oregon December 2,2002 Prepared for: Ramis, Crew, Corrigan, & Bachrach, LLP Portland, Oregon Prepared by: Hahn and Associates, Inc. Portland, Oregon _ HAI Project No. 5927 TABLE OF CONTENTS 1. Introduction.................................................................................... 1 2. Background.................................................................................... 1 3. Field Activities ................................................................................ 2 3.1 Geophysical Survey.................................................................... 2 3.2 Soil Sampling Procedures............................................................. 2 4. Analytical Tests............................................................................... 3 5. Results and Discussion....................................................................... 3 5.1 Geophysical Survey Results........................................................... 3 5.2 Soil Testing Results.................................................................... 3 6. Conclusions and Recommendations........................................................ 4 7. Limitations..................................................................................... 4 GLOSSARY OF ABBREVIATIONS TABLES 1 Summary of Analytical Results for Soil Samples FIGURES 1 Location Map 2 Site Map 3 Sample Location Map 4 Arsenic Concentrations in Surficial Soil APPENDICES A Geophysical Survey Summary Report,by GeoPotential Dated September 7, 2002 B Laboratory Reports and Chain-of-Custody Documentation HAHN AND ASSOCIATES, INC. HAHN AND ASSOCIATES, INC. ENVIRONMENTAL CONSULTANTS December 2,2002 Mr. Dominic Colleta Ramis, Crew, Corrigan, & Bachrach, LLP 1727 NW Hoyt Street Portland, Oregon 97209 HAI Project No. 5927 SUBJECT: Report on Phase II Environmental Site Assessment Activities; 14.7-Acre Property, 13360 and 13560 SW Hall Boulevard, Tigard, Oregon Dear Mr. Colleta: 1. Introduction At your request, Hahn and Associates, Inc. (HAI) has completed Phase II Environmental Site Assessment (ESA) activities at the above-referenced site (Figure 1). The investigation activities were conducted to determine potential impacts to soil from agricultural chemicals at the property, as well as determine the presence of potential abandoned USTs beneath the site. 2. Background In July 2002,HAI conducted a Phase I ESA'of the subject property. The Phase I report identified the following Recognized Environmental Conditions (RECs), as defined by American Society for Testing and Materials (ASTM) Practice E1527-00, that warranted Phase II investigation: • The central portion of the subject property was used as an orchard from at least 1940 to 1953. The pesticides historically used in the orchard area are not known. Pesticide residues may be present in the near-surface soils of the subject property as a result of the past usage of agricultural chemicals. • An unidentified riser pipe was observed protruding the ground approximately 60 feet south of the northern residence. Neither the property owner nor the property residents were aware of the function of the pipe. -- • Neither the property owner nor the property residents were aware of the original heat sources of the two property residences;therefore, the presence of heating oil USTs at the property cannot be ruled out. • A household waste disposal area was reported at the northern portion of the subject property, south of the current residence,but was not observed during the site investigation. The type and quantity of materials that may have been discarded in this area are unknown. ' Hahn and Associates, Inc. (2002). A Phase I Environmental Site Assessment, 14.7-Acre Residential Property, 13360 - 13560 SW Hall Boulevard, Tigard, Oregon (HAI Project No. 5861). July 26, 2002. 434 NW 6th AVENUE,SUITE 203•PORTLAND,OREGON 97209-3651 503/796-0717 OFFICE • 503/227-2209 FAX www.hahnasoc.com Recycled/Recyclable HAHN AND ASSOCIATES, INC. Phase II Environmental Site Assessment Page 2 of 5 14.7-Acre Property December 2,2002 13360 and 13560 SW Hall Boulevard HAI Project No.5927 Tigard, Oregon The Phase II ESA activities discussed herein were designed to address the above- mentioned RECs, and involved investigation of near surface soils for agricultural chemicals at the site of the former orchard, as well as the completion of a geophysical survey in the vicinity of the riser pipe, residences, and household waste disposal area. 3. Field Activities 3.1 Geophysical Survey On September 5, 2002, GeoPotential, of Gresham, Oregon, conducted geophysical survey activities on accessible portions of the subject property to assess for the presence of potential abandoned USTs in the vicinity of the unidentified riser pipe and residences, and at the potential household waste disposal area. Furthermore, at the request of Ramis, Crew, Corrigan, & Bachrach, LLP, GeoPotential also completed a survey at a probable well location adjacent to the residence at 13560 SW Hall Boulevard and of a depression in the former orchard area. A combination of magnetic and ground penetrating radar geophysical equipment was used. The results of the geophysical survey indicated the presence of an abandoned water well adjacent to the southern residence at 13560 SW Hall Boulevard, and a magnetic anomaly that was interpreted to be caused by a water line in the vicinity of the abandoned water well. The unidentified riser pipe was determined to be an abandoned water line. No USTs were interpreted to be beneath the surveyed areas of the property. No metallic debris was detected in the suspected household waste disposal area, nor was the disposal area identified. _ Further, no water well was identified at the depression in the former orchard area. The results of the survey conducted by GeoPotential and a map are included in Appendix A. 3.2 Soil Sampling Procedures On September 5, 2002, eight soil samples were collected from native soils within the former orchard area at the subject site over a depth range of 0.25 to 1.5 feet bgs. The sample locations (Figure 3) were chosen based on a systematic random sampling procedure in accordance with U.S. Environmental Protection Agency (EPA) protocol, as defined in Test Methods for the Evaluation of Solid Wastes, (SW-846), Physical Chemical Methods, Third _ Edition, Volume II, dated November 1986. These protocols are designed to generate data that is representative of an area of concern. The protocol requires a sufficient number of samples be collected to represent the variability of the concentrations of contaminants in the soil. Additionally, two background soil samples were collected from the northern portion of the property that was not historically used as an orchard, to determine natural background levels for selected metals (Figure 3). All sample locations were dug by hand using a decontaminated shovel, and the samples _ were collected with a decontaminated stainless steel trowel. Upon collection, each soil sample was immediately placed in a 9-ounce sample jar and capped with a teflon-lined lid. The sample jars were then labeled and transferred to a chilled container for shipment to the analytical laboratory. Standard sampling protocols, including the use of chain-of- custody documentation, were followed for all sampling procedures. HAHN AND ASSOCIATES, INC. Phase II Environmental Site Assessment Page 3 of 5 14.7-Acre Property December 2,2002 13360 and 13560 SW Hall Boulevard HAI Project No.5927 Tigard, Oregon All soil sampling equipment was decontaminated before each sample was collected by using a detergent solution wash, and two potable water rinses,in order to prevent cross- contamination. 4. Analytical Tests The ten soil samples were shipped with chain-of-custody documentation in sealed and chilled containers to Specialty Analytical located in Tualatin, Oregon, whereupon the laboratory prepared four composite samples from the eight discrete soil samples collected in the former orchard area. The composite sample description is indicated in Table 1. The background soil samples were not composited. .,. The composite soil samples were analyzed for organochlorine pesticides by EPA Method 8081A,chlorinated herbicides by EPA Method 8151, and selected total metals that were common agricultural chemicals (arsenic, copper, lead, and mercury) by EPA Method _ 6010/7000 Series. The background soil samples were analyzed for the indicated metals only. Furthermore, as described in Section 5.2, follow-up analyses for arsenic (only) were conducted on the two discrete samples comprising composite sample—013. The results of the soil analytical testing are summarized on Table 1. The laboratory reports and chain-of-custody documentation for the soil sampling activities are included in Appendix B. .. 5. Results and Discussion 5.1 Geophysical Survey Results The geophysical survey results indicate: 1)USTs were not detected at the subject property, 2) one water well was identified adjacent to the southern residence, and 3)the reported household waste disposal area was not located. 5.2 Soil Testing Results Analytical testing of the four composite, near surface, soil samples from the former orchard area did not indicate the presence of organochlorine pesticides or chlorinated herbicides (Table 1). The composite soil samples in the former orchard area identified the presence of arsenic at concentrations ranging from 2.83 to 21.5 parts per million(ppm), copper(6.47 to 9.96 ppm), and lead(3.7 to 7.59 ppm)in near-surface soils at depths of 0.25 to 1.5 feet bgs (Table 1). Mercury was not detected in any of the soil samples. The detected copper and lead levels were well below EPA Region 9 Preliminary Remediation Goals (PRGs) for residential _ soil, and within the range of natural background levels. However, the detected arsenic concentrations exceed EPA PRGs for residential soils. Due to the elevated arsenic identified in composite sample—013 (21.5 ppm), follow-up analyses of the two discrete soil samples that had been combined to form this composite sample(samples—003 and—004) were conducted. Results of these follow-up analyses confirmed the presence of arsenic at elevated concentrations in these soils, with 18.7 ppm and 26.1 ppm identified in soil samples -003 and—004, respectively(Figure 4). r HAHN AND ASSOCIATES, INC. Phase II Environmental Site Assessment Page 4 of 5 14.7-Acre Property December 2,2002 13360 and 13560 SW Hall Boulevard HAI Project No. 5927 Tigard, Oregon Based on site-specific background data for arsenic (up to 2.64 ppm), and naturally occurring background arsenic levels in area soils (typically below 7 ppm), it appears the arsenic concentrations in samples -003 (18.7 ppm), -004(26.1 ppm),-012 (9.07 ppm)and-013 (21.5 ppm) are elevated above background levels. The source for the elevated arsenic in soil is not known, but may be due to historic applications in the orchard area. 6. Conclusions and Recommendations The geophysical survey of the subject property did not indicate the presence of USTs adjacent to the residences nor at the unidentified riser pipe. The suspected household waste disposal area was not located. An abandoned water well was identified adjacent to the southern residence. It should be determined if the water well has been properly abandoned. Analytical testing of samples collected from near-surface soils in the former orchard area at the subject property indicates organochlorine pesticides, chlorinated herbicides, copper, lead, and mercury were not detected at levels of concern. However, the detected arsenic concentrations in soil of the former orchard area exceed risk screening criteria, and are greater than the arsenic levels detected in the background soil samples. Therefore, further evaluation of near surface soils in the orchard area is recommended to determine the extent of elevated arsenic in soil, as well as to determine if the arsenic in soil poses an unacceptable risk to human health under future development scenarios. As a precaution to ., avoid potential unacceptable health risks posed by long-term exposure to arsenic in soils, a possible remedy for soils in the former orchard area would be to cover or cap the areas of concern with other surface material (e.g. clean soil or pavement) in order to minimize potential exposure. 7. Limitations The samples discussed in this report were collected, analyzed, and interpreted following the standards of care, skill, and diligence ordinarily provided by a professional in the performance of similar services as of the time the services were performed. This report and the conclusions and/or recommendations contained in it are based solely upon physical sampling and analytical activities that were conducted. The data presented in this report document only the concentrations of the target analytes in the particular sample -- and not the property as a whole. If there are any comments or questions, please contact the undersigned or Mr. Roger Brown. Thank you for the opportunity to be of service. Respectfully, Derek C. Sandoz Environmental Scientist attachments HAHN AND ASSOCIATES, INC. Phase II Environmental Site Assessment Page 5 of 5 14.7-Acre Property December 2,2002 13360 and 13560 SW Hall Boulevard HAI Project No.5927 Tigard, Oregon Glossary of Abbreviations bgs below ground surface EPA U. S. Environmental Protection Agency ESA Environmental Site Assessment HAI Hahn and Associates, Inc. OAR Oregon Administrative Rules ppm parts per million —' RECs recognized environmental conditions PRGs Preliminary Remediation Goals HAHN AND ASSOCIATES, INC. TABLE 1 - Summary of Analytical Results for Soil Samples Phase II Environmental Site Assessment 14.7-Acre Property 13360-13560 SW Hall Boulevard Tigard,Oregon HAI Project No. 5927 Composite Discrete Sample Sample Analytical Results Sample Sample Date Depth mg/kg(ppm) Number' Numbers' Total Metals by EPA 6010/7000 Series Organochlorine Pesticides by Chlorinated EPA Method 8081A Herbicides by (feet bgs) Other EPA Method Arsenic Copper Lead Mercury DDT Pesticides 8151 Orchard Area Samples 011 001,002 5-Sep-02 0.25- 1.5 2.83 9.96 7.59 ND>0.0157 ND>0.040 ND ND 012 003,004 5-Sep-02 0.25- 1.5 21.5 6.47 6.39 ND>0.0167 ND>0.040 ND ND - 003 5-Sep-02 0.25- 1.5 18.7 - - - - 004 5-Sep-02 0.25- 1.5 26.1 - - - - - 013 005,006 5-Sep-02 0.25- 1.5 9.07 6.74 3.70 ND>0.0167 ND>0.040 ND ND 014 007,008 5-Sep-02 0.25- 1.5 ND>2.00 9.27 6.21 ND>0.0157 ND>0.040 ND ND Background Samples 009 5-Sep-02 0.25- 1.5 ND>2.00 10.6 7.32 ND>0.0167 - - 010 5-Sep-02 0.25- 1.5 2.64 11.2 7.49 ND>0.0167 - - - Reference Level 2--> 0,39 2;900, 400. 23. 1.7 - Note: -=not analyzed EPA=US Environmental Protection Agency ND=not detected above detection limit indicated bgs=below ground surface mg/kg=milligrams per kilogram ppm=part per million DDT=dichlorodiphenyltrichloroethane 1=Sample number prefix:5927-020905- 2=Reference Levels based on EPA Region 9 Preliminary Remediation Goals(PRGs)-Residential Soil(November 2000) Bold=Detected concentration exceeds Reference Level Updated: 10/14/02 JSB Page 1 of 1 File Name:5927-01 Pesticide Rslts HAHN AND ASSOCIA'T'ES,INC. SUBJECT PROPERTY `'• ova'_ •.V I••.: '{•s''Jri.• •! .`v � !� '� • �� -� `mss_ • �� • ' • Ira •� � �� ` // 11 � �p'y,,•v -. K..',. �t,Q (< + �-' � �T x _ 'pig `y �� ..'r• a V !93 ,sw,^i,onl L wan RD - •1. r. • '� r ' ,. •' . TTtLIf , - �I 3 til, '.. i —�::�=-._.�� - �, -7s, `r � � ..hailer ��•fi• i a i 0 2000 4000 N Approximate Scale in Feet Note: Base Map from the Beaverton, Oregon(1984)USGS 7.5-Minute Quadrangle Contour Interval: 10 Feet HAI Project HAHN AND ASSOCIATES Location Map FIGURE No. 5927 INCORPORATED ENVIRONMENTAL CONSULTANTS Phase II ESA September 2002 434 NW SIXTH AVENUE,SUITE 203 14.7-Acre Property PORTLAND,OREGON 97209 13360-13560 SW Hall Boulevard 503/796-0717 Tigard, Oregon I N --] 0 200 400 Tax Lot 600 Approximate Scale in Feet LEGEND IN, aSubject Property 0 I Former Orchard Area Existing Structures J Northern Residence ti (13360 SW Hall Blvd.) . . . . . . . . . . . . . Reported Household -------------- Waste Disposal Area Unidentified Riser Pipe TL 690 - --- - - - - - - --- ---------------- - ----------- Depression Tax Lot 100 ---------------------------------------------------------------------- --------- I F-1 Southern Residence (13560 SW Hall Blvd.) Tax Lot 200 Abandoned Water Well HAI Project HAHN AND ASSOCIATES, Site Map FIGURE No. 5927 INCORPORATED ENVIRONMENTAL CONSULTANTS Phase II ESA Activities September 2002 434 NW SIXTH AVENUE,SUITE 203 14.7-Acre Property 2 PORTLAND, OREGON 97209 13360 and 13560 SW Hall Boulevard 503/796-0717 Tigard, Oregon I N 7 0 200 400 Tax Lot 6\00 1 Approxi I mate I Scale in Feet 010 O 009 LEGEND 0 Subject Property 0 • Former Orchard Area Existing Structures 001 Soil Sample Locations O (Sample No. Prefix: 5927-020905-) ti 004- 10, TL 690 ------------------------------------------------I----------------- Tax Lot 100 ---------------------------------------------------------------------- --------- ti Tax Lot 200 HAI Project HAHN AND ASSOCIATES, Sample Location Map FIGURE No. 5927 INCORPORATED ENVIRONMENTAL CONSULTANTS Phase II ESA Activities September 2002 434 NW SIXTH AVENUE,SUITE 203 14.7-Acre Property 3 PORTLAND, OREGON 97209 13360 and 13560 SW Hall Boulevard 503/796-0717 Tigard, Oregon 1N7 0 200 400 Tax Lot 600 ,44—i Approximate Scale in Feet 010 0 2.64 009 Estimated Area with LEGEND 0 . 1/1-1 Arsenic>Background ND>2.0 Subject Property -(0 0 Former Orchard Area Existing Structures 001 Soil Sample Locations 0 (Sample No.Prefix: ? 5927-020905-) .......... Arsenic concentration 9.07 at 0.25-1.5 feet bgs in Parts per million "00i'-%,",-' '062 -00;3"-- ND Not detected above laboratory reporting 2610 level ,'?005' TL 690 -1---------- --- 9.07 ----------------------------- ND>2.0 Tax Lot 100 ----------------------------------------------------------------------1—-------- Tax Lot 200 ti HAI Project HAFT AND ASSOCIATES, Arsenic Concentrations in FIGURE No. 5927 INCORPORATED Surficial Soil �7 ENVIRONMENTAL CONSULTANTS Phase II ESA Activities A September 2002 434 NW SIXTH AVENUE,SUITE 203 14.7-Acre Property 4 PORTLAND, OREGON 97209 13360 and 13560 SW Hall Boulevard 503/796-0717 Tigard, Oregon APPENDIX A Geophysical Survey Summary Report By GeoPotential,Dated September 7,2002 HAHN AND ASSOCIATES G,eoPotentia1, ENVIRONMENTAL & EXPLORATION GEOPHYSICS O437 N.E. LIBERTY AVE. GRESHAM, OR 97030•PH (503)665-7520•FAX(503)492-4404 E-Mail: geopotential@aol.com SUMMARYREPORT SUBSURFACE MAPPING SURVEY FOR UNDERGROUND STORAGE TANKS RESIDENCES 13360&13560 SW HALL BOULEVARD TIGARD, OREGON CLIENT.• HAHNAND ASSOCIATES 434 NE 6'AVENUE SUITE 203 PORTLAND, OR 97209-3600 September 7,2002 HAI Work Order No.A135-5927-1 GeoPotential Project Number 4170 CONTENTS SUMMARY--PAGE 3 INTRODUCTION—PAGE 3 SURVEY OBJECTIVES---PAGE 3 SURVEY SITE---PAGE 3 TIMING--PAGE 3 SURVEY EQUIPMENT--PAGE 4 PROCEDURE---PAGE 4 RESULTS-PAGE 4 LIMITATIONS---PAGE 5 FIGURES SITE MAP APPENDICES APPENDIX A-MAGNETOMETER SURVEYS---PAGE 6 APPENDIX B-GROUND PENETRATING RADAR SURVEYS---PAGE 7 -2- SUMMARY A geophysical survey was conducted in the vicinity of two Residences located at 13360 and 13560 SW Hall Boulevard in Tigard,Oregon for the purpose of detecting underground storage tanks and other features that may be of environmental interest at the Sites.A magnetometer and electromagnetic scan was used to identify subsurface metallic objects and inspect possible debris pits. Ground penetrating radar(GPR) Surveys were then conducted to locate an abandoned water well and a sinkhole. INTRODUCTION Subsurface mapping surveys are geophysical surveys utilizing geophysical data and methods to detect and locate natural and manmade subsurface features. The Aqua-Tronics A6 Tracer and the Schonstedt magnetic gradiometer were used to scan for buried metallic objects. Follow-up surveys using ground-penetrating radar(GPR)are often used to help determine the source of magnetic and electromagnetic anomalies.GPR Surveys are also useful for identifying buried non-metallic objects such abandoned water wells and pits. SURVEY OBJECTIVES The survey objectives at this Site were to locate and possibly identify buried ferriferous objects at the Site, in particular underground storage tanks(USTs),to locate an abandoned water well,investigate a sinkhole and possible debris pits. SURVEY SITE The Site consisted of the vicinity of two Residences located at 13360 and 13560 SW Hall Boulevard in Tigard,Oregon(see SITE MAP). The Site is approximately 14.6 acres,however the area included in the magnetic and electromagnetic scan for USTs consisted of a 20-foot strip around the exterior of the buildings located on the SITE.No surface features indicated a UST other then a single standing pipe located to the southeast of the 13360 residence. Disturbed soil zones in the vicinity of the standing pipe indicated possible debris pits. A sinkhole located on the boundary between tax lots 100 and 200 indicated a possible former water well. Historical information obtained by HAI indicated an abandoned water well located to the southeast of the 13560 residence. TIMING Ralph Soule and Nikos Tzetos of GeoPotential conducted fieldwork on September 5,2002. Derek Sandoz of Hahn coordinated the fieldwork.The report was written by Ralph Soule,and then mailed to Hahn on September 7,2002. -3- SURVEY EQUIPMENT The following geophysical instruments were used to conduct the survey: • HEATH SURE-LOCK PIPE&CABLE LOCATOR(P&C SURVEY) • MALA RAMAC GROUND PENETRATING RADAR SYSTEM WITH A 500 MHZ ANTENNA (GPR SURVEY) • AQUA-TRONICS A6 ELECTROMAGNETIC TRACER(EMA6 SURVEY) • SCHONSTEDT GA52 MAGNETIC GRADIOMETER(GA52 SURVEY) This equipment and the procedures used to meet the survey objectives of this project have been proven effective in detecting buried metallic objects such as utilities,USTs and buried steel drums. GPR Surveys are used to locate non-metallic buried objects.P&C Surveys are used to locate buried utilities and piping. PROCEDURE A P&C Survey of the standing pipe was conducted. The interior basement of the 13360 residence was inspected for product lines.Access to the basement of the 13560 Residence was not available. EMA6&GA52 Surveys were conducted in an approximate 20-foot strip around the exterior of buildings. In some instances blackberry bushes and surface obstructions prevented contiguous coverage. GA52 and EMA6 Surveys were conducted over disturbed soil zones at the 13360 Residence. A P&C Survey was conducted for a water line entering the southwest comer of the 13560 Residence. A GPR Survey was conducted over a suspected water well at the 13560 Residence. A GPR Survey was conducted over the sinkhole located in the field to the Northeast of the 13560 Residence. RESULTS The RESULTS are shown on the SITE MAP.Results were marked on the SITE with marking paint. The standing pipe was found to extend to Hall Boulevard and is most likely an abandoned water line. No product lines or other evidence for oil heating was found in the basement of the 13360 Residence. -_ The UST Surveys detected no USTs. The Surveys of the disturbed soil zones detected no metallic debris. The P&C Survey of the water line led to an area of intersecting water lines.A GPR Survey of this area indicated an abandoned water well as shown on the SITE MAP. The GPR Survey of the sinkhole did not produce any evidence that this feature was a water well. -4- LIMITATIONS Geophysical surveys consist of interpreting geophysical responses from subsurface features. Since a variety of subsurface features can produce identical geophysical responses it is necessary to confirm the geophysical interpretation with intrusive investigations such as excavating or drilling.In addition many subsurface features may produce no geophysical response.The use of this SUBSURFACE MAPPING SURVEY is the sole responsibility of the CLIENT. Ralph Soule September 7,2002 GeoPotential -5- !• 1 1 7" 'n n + , e , _ r � 4 h'ld�ix• � _. t 460r— .._ �..• g �» 13360 r,. , � � ea , sr r, rw ♦t `R� It SINKHOLE t � m 2 `ice °.�: •� s� Y _ • ..;� tis • , y— M1 v 1356'0"' k f r � rA-' WATER WELL ' Y. 11-j IM I GeoPotential • • •, ENVIRONMENTAL&EXPLORATION GEOPHYSICS Residences 13360-13560 SW Hall Blvd. 437 N.E.LIBERTY AVE.GRESHAM,OR 97030-PH(503)665-7520-FAX(503)4924404 Tigard,Oregon E-MAIL GeoPotential@aol.com • SepSUBSURFACE MAPPING SURVEYtember 6,2002 • 41MIHahn and Associates,Inc. APPENDIX A MAGNETOMETER SURVEYS The earth's magnetic field, measured in "nano Teslas"(nT), behaves like a bar magnet, with the strongest magnetic field located at the poles, and the weakest field located near the equator. In the United States, the average field intensity varies widely, however, the average value is about 50,000 NT. Also, like the magnetic field around the bar magnet, the earth's magnetic field is inclined. This inclination varies between 60 and 75 degrees, generally depending upon the latitude of the measuring location. The earth's magnetic field varies constantly and, during sunspot activity, quite dramatically. A magnetometer is an electronic device that measures the intensity of the earth's magnetic field. Naturally occurring geologic features and buried ferrous metal objects such as underground storage tanks, drums, ordnance,pipes and debris filled trenches produce both horizontal and vertical disturbances to the earth's local magnetic field. The objects causing these "anomalies"can be detected quickly and reliably using portable magnetometers. The intensity of an anomaly is a function of the mass, size and depth of burial of the object. As a rule of thumb, single drums buried several feet below the surface produce anomalies of about 200 nT relative to the normal undisturbed background and can be detected at a horizontal distance of about 15 feet, while large caches of drums can produce anomalies of marry thousands of nT and may be detectable 50 feet away. Magnetometers generally measure horizontal variations in the local magnetic field. A magnetic gradiometer is a variant of the magnetometer that measures both the horizontal and the vertical magnetic field at each survey point. It consists of two identical sensors located vertically on a staff and having a fixed separation. The intensity of the magnetic f eld caused by a buried metal object varies inversely with the distance between the object and the sensor. The relative intensities measured simultaneously at each sensor are used to determine the relative depth of burial of an object. Relative depth estimates of buried metal objects can be made using a single sensor. In general,for a given mass object, the deeper the object is buried, the lower the amplitude and the wider the anomaly. Shallowly buried objects produce higher amplitude anomalies with closely spaced contour lines. Magnetic surveys can only detect ferrous metal objects and cannot be used to idents the buried object. Estimates of the total mass of a buried object are difficult due to the physical properties of the object and other factors. Interference caused by observed surface metal objects limits the accuracy of the survey. The anomalies produced by fences,power lines, cars and buildings can easily mask the anomaly caused by an underground target. Magnetic surveys are cost effective. Using the standard"step and wait"magnetometer, data from approximately 1000 points can be obtained in one field day corresponding to between 1 acre and about 5 acres depending on site conditions and survey goals. More modern cesium magnetometers collect up to 10 readings per second continuously, thus the operator can proceed without stopping. Many modern magnetometers use an audible signal to call attention to anomalous data as it is obtained. At some sites metallic objects can be detected and marked in the field at the time of the survey. The use of a second, automatically recording"base station"magnetometer is highly recommended due to temporal variations in the earth's magnetic field. These changes must be removed from the field data before an accurate interpretation can be made,particularly when searching for small-buried objects. Magnetic data are most commonly presented in two contour maps. The TOTAL MAGNETIC FIELD CONTOUR MAP shows the horizontal magnetic field and, therefore, the areal extent of anomalies. The GRADIOMETER CONTOUR MAPS show the vertical magnetic field and indicate the relative depth of burial of the objects causing those anomalies. Color versions of these maps maybe produced showing only the magnetic highs and lows. -6- APPENDIX-B GROUND PENETRATING RADAR SURVEYS Ground Penetrating Radar(GPR) uses high frequency radio waves directed into the ground to acquire information about the subsurface. The energy radiated into the ground is reflected back to the antenna by features having significantly different electrical properties to that of the surrounding material. The greater the contrast, the stronger the reflection. Typical reflectors include water table, bedrock, bedding, fractures, voids, contaminant plumes and man-made objects such as UST's and utilities. Data are digitally recorded or downloaded to a laptop computer for filtering and processing. GPR can be a valuable tool to accurately locate both metallic and non-metallic UST's and utilities, buried drums and hazardous material even below reinforced concrete floors and slabs. GPR can delineate _ trenches and excavations and, under some conditions, it can be used to locate contaminant plumes. It has been used as an archaeological tool to look for buried artifacts. It can accurately profrle fresh water lake bottoms either from a boat or from a frozen lake surface. GPR can locate voids below roads and runways. GPR has numerous engineering applications. It can be used in non-destructive testing of engineering material,for example, locating rebar in concrete structures and determining the thickness of concrete and other structural material. _ GPR is often used in conjunction with magnetometer surveys. Magnetometer Surveys are veryfast and large areas can be covered cost effectively. Often, magnetic anomalies can be marked in the field, then can be further investigated using ground penetrating radar. Under some conditions, although a UST itself may not be clearly visible in a GPR record, the excavation or trench in which the UST is buried is evident. When combined with other complimentary data, such as magnetometer data, it is safe to assume that a GPR "trench"with no clear GPR UST reflection, combined with a large "tank-shaped"magnetic anomaly indicates the presence of a UST. ADVANTAGES GPR provides continuous records along traverses which, depending on the goal of the survey, may be interpreted in the field. In clean, dry, sandy soil, reflections from targets as deep as 100 feet are possible. At flat, open sites,for reconnaissance purposes, the antenna can be towed behind a vehicle at several mph. Many GPR antennas are shielded and are unaffected by surface and overhead objects and power lines. The resolution of data is very high particularly for high frequency antennas. GPR can be used in conjunction with magnetic or EM surveys to accurately locate buried objects. Even under adverse site conditions, shallow, man-made objects generally can be detected. Fiberglass UST's can be detected using GPR. LIMITATIONS Subsurface objects can be detected but, in general, they cannot be identified. USTs and utilities have a characteristic reflection, however, large rocks and boulders have a similar reflection. The reflection visible in a GPR record is very complex and may be caused by small changes in the electrical properties of the soil. The target in mind may not produce it. - 7- Other methods may be necessary to aid in the interpretation of the data(use a magnetometer to detect a large metallic mass, then GPR to determine if the object is tank-like, or a utility locator to determine if there are feed lines and fill pipes leading to the object). Penetration of the GPR signal is "site specific"and its depth ofpenetration at a particular site cannot be _ predicted ahead of time. Near surface conductive material,such as salty or contaminated groundwater and wet, clay-rich soil, may attenuate the radar signal, limiting the effective depth of the survey to several feet. Adequate contrast between the ground and the target is required to obtain reflections. UST's may be missed if they are badly corroded. To determine the depth to an object without "ground truth'; assumptions must be made regarding soil properties. GPR may not be cost-effective for some projects. For a detailed survey mapping underground storage tanks and utilities, it may be necessary to collect data in orthogonal directions at 5-foot line spacing. To acquire the highest quality data,proper coupling between the antenna and the ground surface is necessary. Poor data may be obtained at sites covered with tall grass and brush. -8- APPENDIX B ... Laboratory Reports and Chain-of-Custody Documentation HAHN AND ASSOCIATES �o�030 HAHN AND ASSOCIATES,INC. Laboratory Semc A, 1 CHAIN OF CUSTODY Environmental Management 434 NW Sixth Avenue,Suite 203 a Portland OR 97209 Lab Project No. Chain of Custody No. (503)796-0717 a Fax(503)227-2209 Project Manager Liquid with Sediment Sample Samples Received at 4C (Y or N) Project No. Test Filtrate Test Sediment Test Both Appropriate Containers Used (Y or N) Project Name L Multi-Phase Sample Provide Verbal Results(Y or N) Collected by 57-- Test One(which) Test Separately Shake Provide Preliminary Fax Results sample N Prefix Matrix Analyses to be Performed y � 1� 3 W 3 o z Lab ID Sample N 1 Date Time Sample Description I 0 Remarks I c� /5/61 Loc, t I Q69, Lb C IOo z 3 1 ! ba ► ! �+ !085 � i► t l s I ! I ! I �, 11 033� loo i 001 oml b a i ,/ (e oZ to 7 1 , o I _ I Relinclutshediby Company H AHN&ASS6CTime : v Pany d 6 C. . eta( .4 . Company AA 1 Time ed y ompany 'v� Specialty Analytical 19761 S.W. 95th Place Tualatin,OR 97062 / (503)612-9007 Fax(503)612-8572 1 (877)612-9007 October 02, 2002 Derek Sandoz Hahn and Associates., Inc. 434 NW Sixth Avenue Suite 203 Portland, OR 97209 TEL: (503) 796-01717 FAX (503) 22 7-2209 RE: Tigard Libfury ; 5927 Dear Derek Sandoz: Order No.: !'209030 Specialty Nnalytical received 14 samples o.i 9/6%2002 for the analyscs prese.tted in the following report. There were no problems with the analysis and all data for associated QC met EPA or laboratory specifications except where noted in the Case Narrative, or as qualified with flags. R�salts apply only to the samples analyzed. Without approval of the laboratory; the reproJuction of this report is only pennirted in its entirety. If you have any cpestions regarding these tests, please feel free to call. Sincerely, Cindy D eview Project Manager Specialty Analytical,An Oregon Corporation Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/5927 Lab ID: 0209030-01 Collection Date: 9/5/2002 11:55:00 AM Client Sample ID: 5927-020905-001 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM Hold HOLD 1 9/9/2002 Lab ID: 0209030-02 Collection Date: 9/5/2002 12:08:00 PM Client Sample ID: 5927-020905-002 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM Hold HOLD 1 9/9/2002 Lab ID: 0209030-03 Collection Date: 9/5/2002 12:27:00 PM Client Sample ID: 5927-020905-003 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed TOTAL METALS BY ICP E6010 Analyst: sk Arsenic 18.7 2.00 mg/Kg 1 10/1/2002 Lab ID: 0209030-04 Collection Date: 9/5/2002 12:45:00 PM Client Sample ID: 5927-020905-004 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed TOTAL METALS BY ICP E6010 Analyst: sk Arsenic 26.1 1.92 mg/Kg 1 10/1/2002 Lab ID: 0209030-05 Collection Date: 9/5/2002 11:17:00 AM Client Sample ID: 5927-020905-005 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM Hold HOLD 1 9/9/2002 Page 1 of l 1 Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/5927 Lab ID: 0209030-06 Collection Date: 9/5/2002 10:51:00 AM Client Sample ID: 5927-020905-006 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM ._ Hold HOLD 1 9/9/2002 Lab ID: 0209030-07 Collection Date: 9/5/2002 10:33:00 AM Client Sample ID: 5927-020905-007 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM Hold HOLD 1 9/9/2002 Lab ID: 0209030-08 Collection Date: 9/5/2002 10:18:00 AM Client Sample ID: 5927-020905-008 Matrix: SOIL Analyses -- Result Limit Qual Units DF Date Analyzed HOLD PER CLIENT REQUEST PER CLIENT Analyst: ADM Hold HOLD 1 9/9/2002 Lab ID: 0209030-09 Collection Date: 9/5/2002 1:05:00 PM Client Sample ID: 5927-020905-009 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed TOTAL METALS BY ICP E6010 Analyst: sk Arsenic ND 2.00 mg/Kg 1 9/13/2002 Copper 10.6 1.00 mg/Kg 1 9/13/2002 Lead 7.32 2.00 mg/Kg 1 9/13/2002 MERCURY,TOTAL SW7471 Analyst: djm Mercury ND 0.0167 mg/Kg 1 9/7/2002 Page 2 of I I Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/5927 Lab ID: 0209030-10 Collection Date: 9/5/2002 1:24:00 PM Client Sample ID: 5927-020905-010 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed TOTAL METALS BY ICP E6010 Analyst: sk Arsenic 2.64 2.00 mg/Kg 1 9/13/2002 Copper 11.2 1.00 mg/Kg 1 9/13/2002 Lead 7.49 2.00 mg/Kg 1 9/13/2002 MERCURY,TOTAL SW7471 Analyst: djm Mercury ND 0.0167 mg/Kg 1 9/7/2002 Page 3 of 11 _ ` ~� Specialty Analytical Date: 02-Oct-02 ~� CLIENT: Hahn and Associates,Inc. Lab Order: 0209030 Project: Tigard Library/5927 ~� Lab ID: 0209030-11 Collection Date: 9/5/2002 Client Sample ID: 5927-020905-011 Matrix: SOIL _~ Analyses Result Limit QuaA |Doitm DF Date Analyzed TOTAL METALS BfICP E6010 Analyst: sh Arsenic 2.83 2.00 mg/Kg 1 3/13/2002 ~~ Copper 8.88 180 mg/Kg 1 9/13/2002 Lead 7.59 2,00 mg/Kg 1 8/13/2002 MERCURY,TOTAL SW7471 Anulyst: dHm Mercury No 0.0157 mg/Kg 1 917/2802 ORGANOCHLORINE PESTICIDES SVV8001A Analyst: bda ,~ 4,4'-DDD ND 40.0 pg/Kg 1 9x11/2002 4,4'-DDE ND *0.0 pg/Kg 1 9/11/2002 4.4''DDT ND ^V.O pg/Kg 1 9x11/2002 Aldrin ND 40.0 pg/Kg 1 9v11/2002 ~ alpha-BHC No 40.0 pg/Kg 1 8/11/2002 beta-BHC ND 40.0 ug/Kg 1 8/11/2002 Chlordane No 200 pg/Kg 1 9/11/2002 � delta-BHC ND 40.0 pg/Kg 1 8v11/2002 Dieldrin ND 40,0 pg/Kg 1 8/11/2002 EndoouNan| ND 40.0 pg/Kg 1 8/11/2082 ~ EndnouUanU ND 40.0 pg/Kg 1 9/11/2082 EndouuUanau|fate No 40.0 pg/Kg | 9111/2002 Endrin No 40.0 pg/Kg 1 9/11/2002 Endrin aldehyde No 40�O pg/Kg 1 9v11/2002 ~ Endrin ketone ND 40.0 pg/Kg 1 9V11/2002 gamma-BHC ND 40.0 ug/Kg 1 9/11/2002 Heptachlor ND 40.0 ug/Kg 1 9/11C002 ~ Heptachlor epoxide ND 40.0 pg/Kg / 9x11/2002 Methoxychlor ND 40.0 pg/Kg 1 8/11/2002 Toxaphene NO 200 pg/Kg 1 9/11/2002 , SunrDecech|omUiphany| 146 49'143 3 Y6REC 1 9/11/2002 SuncTetrad/|oo~m«y}eno 132 41.4'106 S Y6REC 1 9K11/2002 CHLORINATED HERBICIDES SV8151 Analyst: bda , 2.4.5-T ND 100 p3/KV 1 9120/2002 2.4.5-TP(Si}va* ND 100 pg/Kg 1 9/20/2002 2.4-D ND 200 ug/Kg 1 9/202002 2,4-DB ND 400 pg/Kg 1 9/20/2002 ^ 4'Nbmphono) ND 200 pg/Kg 1 9/20/2002 Dicmmbu ND 100 ug/Kg 1 9/2012002 nich!o,pmp ND 200 ug/Kg 1 9/302002 ' Dinoseb ND 200 pg/Kg I W20/2002 MCPA ND 40000 ug/Kg 1 9/20/2002 Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates,Inc. Lab Order: 0209030 Project: Tigard Library/5927 CHLORINATED HERBICIDES SW8151 Analyst: bda MCPP ND 40000 pg/Kg 1 9/20/2002 Pentachlorophenol ND 100 pg/Kg 1 9/20/2002 Sum 2,4-DCAA 63.4 40-140 %REC 1 9/20/2002 Page 5 of I I Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates,Inc. Lab Order: 0209030 Project: Tigard Library/5927 Lab ID: 0209030-12 Collection Date: 9/5/2002 Client Sample ID: 5927-020905-012 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed TOTAL METALS BY ICP E6010 Analyst: sk Arsenic 21.5 2.00 mg/Kg 1 9/13/2002 Copper 6.47 1.00 mg/Kg 1 9/13/2002 Lead 6.39 2.00 mg/Kg 1 9/13/2002 MERCURY,TOTAL SW7471 Analyst: djm Mercury ND 0.0167 mg/Kg 1 9/7/2002 ORGANOCHLORINE PESTICIDES SW8081A Analyst: bda 4,4"-DDD ND 40.0 pg/Kg 1 9/11/2002 4,4'-DDE ND 40.0 pg/Kg 1 9/11/2002 4,4"-DDT ND 40.0 pg/Kg 1 9/11/2002 Aldrin ND 40.0 pg/Kg 1 9/11/2002 alpha-BHC ND 40.0 pg/Kg 1 9/11/2002 beta-BHC ND 40.0 pg/Kg 1 9/11/2002 Chlordane ND 200 pg/Kg 1 9/11/2002 delta-BHC ND 40.0 pg/Kg 1 9/11/2002 Dieldrin ND 40.0 pg/Kg 1 9/11/2002 Endosulfan I ND 40.0 pg/Kg 1 9/11/2002 Endosulfan 11 ND 40.0 pg/Kg 1 9/11/2002 Endosulfan sulfate ND 40.0 pg/Kg 1 9/11/2002 Endrin ND 40.0 pg/Kg 1 9/11/2002 Endrin aldehyde ND 40.0 pg/Kg 1 9/11/2002 Endrin ketone ND 40.0 pg/Kg 1 9/11/2002 gamma-BHC ND 40.0 pg/Kg 1 9/11/2002 Heptachlor ND 40.0 pg/Kg 1 9/11/2002 Heptachlor epoxide ND 40.0 pg/Kg 1 9/11/2002 Methoxychlor ND 40.0 pg/Kg 1 9/11/2002 Toxaphene ND 200 pg/Kg 1 9/11/2002 Surr: Decachlorobiphenyl 124 49-143 %REC 1 9/11/2002 Sum Tetrachloro-m-xylene 108 41.4-106 S %REC 1 9/11/2002 CHLORINATED HERBICIDES SW8151 Analyst: bda 2,4,5-T ND 100 pg/Kg 1 9/20/2002 2,4,5-TP(Silvex) ND 100 pg/Kg 1 9/20/2002 2,4-D ND 200 pg/Kg 1 9/20/2002 2,4-DB ND 400 pg/Kg 1 9/20/2002 4-Nitrophenol ND 200 pg/Kg 1 9/20/2002 Dicamba ND 100 pg/Kg 1 9/20/2002 Dichlorprop ND 200 pg/Kg 1 9/20/2002 Dinoseb ND 200 pg/Kg 1 9/20/2002 MCPA ND 40000 pg/Kg 1 9/20/2002 Page 6 of 11 Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates,Inc. Lab Order: 0209030 Project: Tigard Library/5927 CHLORINATED HERBICIDES SW8151 Analyst: bda MCPP ND 40000 pg/Kg 1 9/20/2002 Pentachlorophenol ND 100 pg/Kg 1 9/20/2002 Sum 2,4-DCAA 74.0 40-140 %REC 1 9/20/2002 Page 7 of I I _ ~~ Specialty Analytical Date: 02-Oct-02 ~� CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/j927 ~� Lab ID: 028900-13 Collection Date: 9/5/2002 Client Sample ID: 5927'020905'013 Matrix: SOIL Analyses Result Limit Qual Units DF Date Analyzed � TOTAL METALS BYICP E6810 Analya : ek Arsenic 9.07 3.00 mg/Kg 1 8v13/2002 ~— Copper 6.74 1.00 mg/Kg 1 9/13/2002 Laud 3.70 2.00 mg/Kg 1 8/13/2002 MERCURY,TOTAL SW7471 Analyst: djm ~~ Mercury ND 0.0157 mQo<Q 1 917/2002 ORGANOCHLORINE PESTICIDES SW8081A Anolyot: bda 4.4''ODD ND *n.n pg/Kg 1 8/11/2002 ~~ 4,4'-DDE ND 40.0 pg/Kg 1 8/11/2002 4,4'-DDT ND 40,0 ug/KB 1 9/11/2002 Aldrin ND 40.0 pg/Kg 1 9/11/2002 ~~ alpha-BHC ND 40.0 pg/Kg 1 8/11x2002 beta-BHC ND 40.0 pg/Kg 1 9/11/2002 Chlordane ND 200 pg/Kg 1 9/11C2002 ~. delta-BHC ND 40.0 pg/Kg 1 9/11/2082 Dieldrin ND 40D pg/Kg 1 9/11/2002 EndoouUan| ND 40.8 pg/Kg 1 9/11/2002 EndvauUanU ND 48.0 pg/Kg 1 8/11/2003 ~ Endoeu|fanoulfate ND 40.0 pg/Kg 1 8/11/2002 Endrin ND 40.0 pp/Kg 1 9/11/2002 Endrin aldehyde ND *O.O pg/Kg 1 9/11/2002 ~ Endrin ketone ND 40.0 pg/Kg 1 9/11/2002 Qumma'81-IC ND 40.0 pg/Kg 1 9/11/2002 Heptachlor ND 40.0 pg/Kg 1 9/11/2002 ~ Heptachlor epoxide ND 40.0 pp/Kg 1 8/1112002 Methoxychlor ND 40.0 pp/Kg 1 9/11/2002 Toxaphene NQ 200 ug/Kg 1 8/11/2002 GurrDemoch|ombipneny| 114 49-1*3 Y6REC 1 8/11/2002 ~ Gun:Tetra ch|om'm«y|ene 98.8 41.4-106 %REC 1 9/11/2002 CHLORINATED HERBICIDES SW8151 Analyst: bda ~ 2.4`5-T ND 100 pg/Kg 1 9/202002 2.4.5'TP(3i|ve* ND 100 pg/Kg 1 9/202002 2.4'D ND 200 pg/KV 1 9/202002 u.*-oe ND 400 pg/Kg 1 9/20/2002 ~ 4'Nitrophano| ND 200 ug/Kg 1 9D0/2002 Divambu No 100 pg/Kg 1 91202002 Didh|unpmp ND 200 pg/KU 1 9/202002 ^ oinvmab NO 200 pg/Kg 1 9/202002 MCpA No 40000 pg/Kg 1 912012002 ^ Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates,Inc. Lab Order: 0209030 Project: Tigard Library/5927 CHLORINATED HERBICIDES SW8151 Analyst: bda MCPP ND 40000 pg/Kg 1 9/20/2002 Pentachlorophenol ND 100 pg/Kg 1 9/20/2002 Sum 2,4-DCAA 63.6 40-140 %REC 1 9/20/2002 Page 9 of I I Specialty Analytical Date: 02'(ct-02 ~~ CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/5g27 ~� Lab ID: 0209030'14 Collection Date: 9/5/2002 Client Sample ID: 5927'020905-014 Matrix: 8DlL Analyses Result Limit Quul lOoi$ DF Date Analyzed TOTAL METALS BYICP E6010 Analyot� mh Arsenic ND 2.00 mg/Kg 1 9v13/2002 Copper 927 1.00 mg/Kg 1 8/13/2002 Lead 621 2.00 mg/Kg 1 9V1312002 MERCURY,TOTAL SVV7471 Analyst: djm ~~ Mercury ND 0.0157 mg/Kg 1 9/7/2002 ORGANOCHLORINE PESTICIDES SWROBiA Analyst: bda 4.4''DDD ND 40.0 pg/Kg 1 911112002 ~~ 4,4'-DDE ND 40.0 pg/Kg 1 9/11/2002 4,4'-DDT ND 40.0 pg/Kg 1 8v11x2002 Aldrin ND *O.0 ug/Kg 1 e/11/2002 ~~ alpha-BHC ND 40.0 pg/Kg 1 9/11/2002 b$m'BMC ND *V.O pg/Kg 1 9/11/2002 Chlordane ND 200 pg/Kg 1 9/11/2002 ~. delta-BHC ND 40.0 pg/Kg 1 8/11/2002 Dieldrin ND 40.0 ug/Kg 1 3/11/2002 EndnuuKan| ND 40�0 pg/Kg 1 9/11/2002 Endnau|fon1| ND 40.0 pg/Kg 1 8/1112002 � Endnnuxansu|fate No *V.O pg/Kg 1 9/11/2002 Endrin ND 40.0 ug/Kg 1 9V11/2002 Endrin aldehyde ND 40.0 ug/Kg 1 9/11/2002 — Endrin ketone No 40.0 pg/no 1 3/11/2002 gamma-BHC NO «V.O ug/Kg 1 9/11/2002 Heptachlor ND 40.0 pg/Kg 1 8/11/2002 � Heptachlor epoxide ND «VO pg/KO 1 9/11/2002 Methoxychlor ND 40.0 pg/Kg 1 9/11/2002 Toxaphene ND 200 ug/Kg 1 9111/2002 Su,r:Decooh|ombiphany| 155 48'143 S Y6REC 1 9/11/2002 ~ DuncTeLnouh|om'm«y|ene 115 41 A-106 S Y6REC 1 8111/2002 CHLORINATED HERBICIDES SN8181 Analyst: bdm 2.4.5'T ND 100 pg/Kg 1 9/30/2002 ~ 2.4.5-TP(Silvex) No 100 pg/Kg 1 9/202002 2.4-D ND 200 ug/Kg 1 9120/2002 2.4-oa No 400 pg/Kg 1 9/20/2002 ~ 4-Nitmpxano| ND 200 pg/Kg 1 9120/2002 Dicmmba ND 100 pg/Kg 1 9/20/2002 Dich|ommp ND 200 pg/Kg 1 91202002 . Omuoeb ND 208 pg/Kg 1 9120/2002 MCPA ND 40000 pg/Kg 1 9/20/2002 ~ Page ]0ofl] Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates, Inc. Lab Order: 0209030 Project: Tigard Library/5927 CHLORINATED HERBICIDES SW8151 Analyst: bda MCPP ND 40000 pg/Kg 1 9/20/2002 Pentachlorophenol ND 100 pg/Kg 1 9/20/2002 Sum 2,4-DCAA 67.4 40-140 %REC 1 9/20/2002 Page 11 of I 1 I ► ► ► I I 1 I I I I I I I I I 1 1 I Specialty Analytical Date: 02-Oct-02 CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 6010_S Sample ID MBLK-7367 SampType: MBLK TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS-020913C Client ID: ZZZZZ Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146878 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic ND 2.00 Copper ND 1.00 Lead ND 2.00 Sample ID MBLK-7449 SampType: MBLK TestCode: 6010_S Units: mg/Kg Prep Date: 9/30/2002 Run ID: TJA IRIS_021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149121 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic ND 2.00 Lead ND 2.00 Sample ID LCS-7367 SampType: LCS TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS_020913C Client ID: ZZZZZ Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146879 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 101.3 2.00 100 0 101 85.3 112 0 0 Copper 51.31 1.00 50 0 103 92 115 0 0 Lead 101.9 2.00 100 0 102 86.9 112 0 0 Sample ID LCS-7449 SampType: LCS TestCode: 6010_S Units: mg/Kg Prep Date: 9/30/2002 Run ID: TJA IRIS-021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149122 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 95.51 2.00 100 0 95.5 85.3 112 0 0 Lead 95.19 2.00 100 0 95.2 86.9 112 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits page 1 of 12 � ► ► � � f � � 1 1 1 1 1 1 1 I I 1 I CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 6010_S Sample ID 0209030-09AMS SampType: MS TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS_020913C Client ID: 5927-020905-009 Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146876 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 102.5 2.00 100 1.97 101 75 112 0 0 Copper 60.43 1.00 50 10.65 99.6 77.9 122 0 0 Lead 105.4 2.00 100 7.32 98.1 75.8 108 0 0 Sample ID 0209177-01BMS SampType: MS TestCode: 6010_S Units: mg/Kg Prep Date: 9/30/2002 Run ID: TJA IRIS_021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149119 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 94.57 2.00 100 0 94.6 75 112 0 0 Lead 175.6 2.00 100 46.19 129 75.8 108 0 0 S,RP Sample ID 0209030-09AMSD SampType: MSD TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS_020913C Client ID: 5927-020905-009 Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146877 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 102.2 2.00 100 1.97 100 75 112 102.5 0.293 20 Copper 60.8 1.00 50 10.65 100 77.9 122 60.43 0.610 20 Lead 104.8 2.00 100 7.32 97.5 75.8 108 105.4 0.571 20 Sample ID 0209177-01BMSD SampType: MSD TestCode: 6010_S Units: mg/Kg Prep Date: 9/30/2002 Run ID: TJA IRIS-021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149120 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 93.2 2.00 100 0 93.2 75 112 94.57 1.46 20 Lead 144.4 2.00 100 46.19 98.2 75.8 108 175.6 19.5 20 Sample ID 0209030-09ADUP SampType: DUP TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS-020913C Client ID: 5927-020905-009 Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146875 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qua] Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 2 of 12 CLIENT: Hahn and Associates,Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 6010_S Sample ID 0209030-09ADUP SampType: DUP TestCode: 6010_S Units: mg/Kg Prep Date: 9/11/2002 Run ID: TJA IRIS_020913C Client ID: 5927-020905-009 Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146875 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 2.87 2.00 0 0 0 0 0 1.97 37.2 20 R Copper 11.48 1.00 0 0 0 0 0 10.65 7.50 20 Lead 6.94 2.00 0 0 0 0 0 7.32 5.33 20 Sample ID 0209177-01BDUP SampType: DUP TestCode: 6010_S Units: mg/Kg Prep Date: 9/30/2002 Run ID: TJA IRIS_021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149118 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 2.16 2.00 0 0 0 0 0 0 200 20 RF Lead 93.24 2.00 0 0 0 0 0 46.19 67.5 20 R Sample ID CCV SampType: CCV TestCode: 6010_S Units: mg/Kg Prep Date: Run ID: TJA IRIS_020913C Client ID: ZZZZZ Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146881 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 103.3 2.00 100 0 103 90 110 0 0 Copper 52.95 1.00 50 0 106 90 110 0 0 Lead 102.3 2.00 100 0 102 90 110 0 0 Sample ID CCV SampType: CCV TestCode: 6010_S Units: mg/Kg Prep Date: Run ID: TJA IRIS-021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149124 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 97.65 2.00 100 0 97.6 90 110 0 0 Lead 100.6 2.00 100 0 101 90 110 0 0 Sample ID ICV SampType: ICV TestCode: 6010_S Units: mg/Kg Prep Date: Run ID: TJA IRIS-020913C Client ID: ZZZZZ Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146880 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 3 of 12 / 1 1 1 1 1 1 1 1 1 / / i 1 1 ■ ■ ■ ■ CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 6010_S Sample ID ICV SampType: ICV TestCode: 6010_S Units: mg/Kg Prep Date: Run ID: TJA IRIS_020913C Client ID: ZZZZZ Batch ID: 7367 TestNo: E6010 Analysis Date: 9/13/2002 SegNo: 146880 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 99.11 2.00 100 0 99.1 90 110 0 0 Copper 50.75 1.00 50 0 102 90 110 0 0 Lead 100.7 2.00 100 0 101 90 110 0 0 Sample ID ICV SampType: ICV TestCode: 6010_S Units: mg/Kg Prep Date: Run ID: TJA IRIS_021001C Client ID: ZZZZZ Batch ID: 7449 TestNo: E6010 Analysis Date: 10/1/2002 SegNo: 149123 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Arsenic 98.3 2.00 100 0 98.3 90 110 0 0 Lead 102.3 2.00 100 0 102 90 110 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 4 of 12 i i I I I I I I I I I I I I I I I I I CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 8081A_S Sample ID MBLK-7369 SampType: MBLK TestCode: 8081A_S Units: pg/Kg Prep Date: 9/11/2002 Run ID: GCK_020911A Client ID: ZZZZZ Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146639 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4'-DDD ND 40.0 4,4'-DDE ND 40.0 4,4'-DDT ND 40.0 Aldrin ND 40.0 alpha-BHC ND 40.0 beta-BHC ND 40.0 Chlordane ND 200 delta-BHC ND 40.0 Dieldrin ND 40.0 Endosulfan I ND 40.0 Endosulfan II ND 40.0 Endosulfan sulfate ND 40.0 Endrin ND 40.0 Endrin aldehyde ND 40.0 Endrin ketone ND 40.0 gamma-BHC ND 40.0 Heptachlor ND 40.0 Heptachlor epoxide ND 40.0 Methoxychlor ND 40.0 Toxaphene ND 200 Surr: Decachlorobiphenyl 64720 5.00 33330 0 194 49 143 0 0 S Surr:Tetrachloro-m-xylene 18230 5.00 33330 0 54.7 41.4 106 0 0 Sample ID LCS-7369 SampType: LCS TestCode: 8081A_S Units: pg/Kg Prep Date: 9/11/2002 Run ID: GCK_020911A Client ID: ZZZZZ Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146640 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4'-DDT 209.7 40.0 166.7 0 126 45.7 152 0 0 Aldrin 153 40.0 166.7 0 91.8 37.7 126 0 0 Dieldrin 167.3 40.0 166.7 0 100 50.9 127 0 0 Endrin 173.7 40.0 166.7 0 104 40.8 123 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 5 of 12 CLIENT: Hahn and Associates,Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 8081A_S Sample ID LCS-7369 SampType: LCS TestCode: 8081A_S Units: pg/Kg Prep Date: 9/11/2002 Run ID: GCK_020911A Client ID: ZZZZZ Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146640 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual gamma-BHC 158 40.0 166.7 0 94.8 40 125 0 0 Heptachlor 153.7 40.0 166.7 0 92.2 41.1 124 0 0 Sample ID 0209030-11AMS SampType: MS TestCode: 8081A_S Units: pg/Kg Prep Date: 9/11/2002 Run ID: GCK_020911A Client ID: 5927-020905-011 Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146646 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4'-DDT 140 40.0 166.7 0 84 40.5 163 0 0 Aldrin 105.3 40.0 166.7 0 63.2 42.6 140 0 0 Dieldrin 118.3 40.0 166.7 0 71 43.7 142 0 0 Endrin 122.3 40.0 166.7 0 73.4 40.5 128 0 0 gamma-BHC 111 40.0 166.7 0 66.6 45.8 145 0 0 Heptachlor 111.7 40.0 166.7 0 67 43.6 152 0 0 Sample ID 0209030-11AMSD SampType: MSD TestCode: 8081A_S Units: pg/Kg Prep Date: 9/11/2002 Run ID: GCK_020911A Client ID: 5927-020905-011 Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146647 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4'-DDT 129.7 40.0 166.7 0 77.8 40.5 163 140 7.66 20 Aldrin 106.7 40.0 166.7 0 64 42.6 140 105.3 1.26 20 Dieldrin 114 40.0 166.7 0 68.4 43.7 142 118.3 3.73 20 Endrin 118 40.0 166.7 0 70.8 40.5 128 122.3 3.61 20 gamma-BHC 112.7 40.0 166.7 0 67.6 45.8 145 111 1.49 20 Heptachlor 112.3 40.0 166.7 0 67.4 43.6 152 111.7 0.595 20 Sample ID CCV-7369 SampType: CCV TestCode: 8081A_S Units: pg/Kg Prep Date: Run ID: GCK_020911A Client ID: ZZZZZ Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146641 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4'-DDD 91.67 40.0 83.33 0 110 85 115 0 0 4,4'-DDE 93.33 40.0 83.33 0 112 85 115 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPU outside accepted recovery lints Page 6 of 12 1 1 I 1 1 I I I I 1 1 1 1 1 1 1 � ► ► CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 8081A_S Sample ID CCV-7369 SampType: CCV TestCode: 8081A_S Units: pg/Kg Prep Date: Run ID: GCK_020911A Client ID: ZZZZZ Batch ID: 7369 TestNo: SW8081A Analysis Date: 9/11/2002 SegNo: 146641 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 4,4"-DDT 79.67 40.0 83.33 0 95.6 85 115 0 0 Aldrin 93.33 40.0 83.33 0 112 85 115 0 0 alpha-BHC 89 40.0 83.33 0 107 85 115 0 0 beta-BHC 91 40.0 83.33 0 109 85 115 0 0 delta-BHC 93 40.0 83.33 0 112 85 115 0 0 Dieldrin 89.67 40.0 83.33 0 108 85 115 0 0 Endosulfan 1 92.33 40.0 83.33 0 111 85 115 0 0 Endosulfan II 88.67 40.0 83.33 0 106 85 115 0 0 Endosulfan sulfate 83 40.0 83.33 0 99.6 85 115 0 0 Endrin 87.33 40.0 83.33 0 105 85 115 0 0 Endrin aldehyde 87 40.0 83.33 0 104 85 115 0 0 Endrin ketone 88.67 40.0 83.33 0 106 85 115 0 0 gamma-BHC 92.33 40.0 83.33 0 111 85 115 0 0 Heptachlor 91.33 40.0 83.33 0 110 85 115 0 0 Heptachlor epoxide 90.33 40.0 83.33 0 108 85 115 0 0 Methoxychlor 89.67 40.0 83.33 0 108 85 115 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 7 of 12 ► I I 1 I I I I 1 I I I 1 I I 1 I 1 I CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 8151_S Sample ID MBLK-7385 SampType: MBLK TestCode: 8151_S Units: pg/Kg Prep Date: 9/10/2002 Run ID: GCK_020920B Client ID: ZZZZZ Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148000 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qua[ 2,4,5-T ND 100 2,4,5-TP(Silvex) ND 100 2,4-D ND 200 2,4-DB ND 400 4-Nitrophenol ND 200 Dicamba ND 100 Dichlorprop ND 200 Dinoseb ND 200 MCPA ND 40000 MCPP ND 40000 Pentachlorophenol ND 100 Surr:2,4-DCAA 53850 0 66670 0 80.8 40 140 0 0 Sample ID LCS-7385 SampType: LCS TestCode: 8151_S Units: pg/Kg Prep Date: 9/10/2002 Run ID: GCK_020920B Client ID: ZZZZZ Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148001 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual 2,4,5-T 760.7 100 666.7 0 114 50 150 0 0 2,4,5-TP(Silvex) 764 100 666.7 0 115 50 150 0 0 2,4-D 721.3 200 666.7 0 108 50 150 0 0 Dichlorprop 742.7 200 666.7 0 111 50 150 0 0 Pentachlorophenol 902.7 100 666.7 0 135 50 150 0 0 Sample ID 0209030-14AMS SampType: MS TestCode: 8151_S Units: pg/Kg Prep Date: 9/10/2002 Run ID: GCK_020920B Client ID: 5927-020905-014 Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148007 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 2,4,5-T 477.3 100 666.7 0 71.6 50 150 0 0 2,4,5-TP(Silvex) 438 100 666.7 0 65.7 50 150 0 0 2,4-D 430.7 200 666.7 0 64.6 50 150 0 0 Dichlorprop 462.7 200 666.7 0 69.4 50 150 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits page 8 of 12 1 1 1 1 1 I 1 1 1 1 1 1 I I 1 1 1 I 1 CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: 8151_S Sample ID 0209030-14AMS SampType: MS TestCode: 8151_S Units: pg/Kg Prep Date: 9/10/2002 Run ID: GCK_020920B Client ID: 5927-020905-014 Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148007 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual Pentachlorophenol 494 100 666.7 0 74.1 50 150 0 0 Sample ID 0209030-14AMSD SampType: MSD TestCode: 8151_S Units: Ng/Kg Prep Date: 9/10/2002 Run ID: GCK_020920B Client ID: 5927-020905-014 Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148008 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 2,4,5-T 615.3 100 666.7 0 92.3 50 150 477.3 25.3 20 R 2,4,5-TP(Silvex) 606.7 100 666.7 0 91 50 150 438 32.3 20 R 2,4-D 576.7 200 666.7 0 86.5 50 150 430.7 29.0 20 R Dichlorprop 650.7 200 666.7 0 97.6 50 150 462.7 33.8 20 R Pentachlorophenol 695.3 100 666.7 0 104 50 150 494 33.9 20 R Sample ID CCV-7385 SampType: CCV TestCode: 8151_S Units: pg/Kg Prep Date: Run ID: GCK_020920B Client ID: ZZZZZ Batch ID: 7385 TestNo: SW8151 Analysis Date: 9/20/2002 SegNo: 148002 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual 2,4,5-T 358.7 100 333.3 0 108 85 115 0 0 2,4,5-TP(Silvex) 356.7 100 333.3 0 107 85 115 0 0 2,4-D 352.7 200 333.3 0 106 85 115 0 0 2,4-DB 358 400 333.3 0 107 85 115 0 0 4-Nitrophenol 345.3 200 333.3 0 104 85 115 0 0 Dicamba 352.7 100 333.3 0 106 85 115 0 0 Dichlorprop 355.3 200 333.3 0 107 85 115 0 0 Dinoseb 393.3 200 333.3 0 118 85 115 0 0 S MCPA 34360 40000 33330 0 103 85 115 0 0 MCPP 46990 40000 33330 0 141 85 115 0 0 S Pentachlorophenol 384 100 333.3 0 115 85 115 0 0 S Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 9 of 12 1 1 1 I I i I I I 1 I I I I I i I I I CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: HG—CTS Sample ID MB-7357 SampType: MBLK TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145988 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury ND 0.0167 Sample ID MBLKII SampType: MBLK TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 146014 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury ND 0.0167 Sample ID LCS-7357 SampType: LCS TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145987 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.2091 0.0167 0.208 0 101 86 113 0 0 Sample ID LCSII SampType: LCS TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 146013 Analyte Result PQL SPK value SPK Ref Val %REC Lowt-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.1953 0.0167 0.208 0 93.9 86 113 0 0 Sample ID 0208102-01BMS SampType: MS TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145990 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.198 0.0157 0.1949 0 102 47.3 131 0 0 Sample ID 0209030-11AMS SampType: MS TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: 5927-020905-011 Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145993 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 10 of 12 tI 1 1 1 1 I ! I 1 I 1 1 1 1 I I I 1 I CLIENT: Hahn and Associates, Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: HG—CTS Sample ID 0209030-11AMS SampType: MS TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: 5927-020905-011 Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145993 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.2012 0.0167 0.208 0 96.7 47.3 131 0 0 Sample ID 0208102-01BMSD SampType: MSD TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145991 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.2122 0.0167 0.208 0 102 47.3 131 0.198 6.92 20 Sample ID 0209030-11AMSD SampType: MSD TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: 5927-020905-011 Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145994 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.2151 0.0179 0.2229 0 96.5 47.3 131 0.2012 6.69 20 Sample ID 0208102-01BDUP SampType: DUP TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145989 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury ND 0.0139 0 0 0 0 0 0 0 20 Sample ID 0209030-IIADUP SampType: DUP TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: 5927-020905-011 Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 145992 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury ND 0.0179 0 0 0 0 0 0 0 20 Sample ID CCV SampType: CCV TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 146012 Analyte Result PQL SPK value SPK Ref Val %REC Lowl-imit HighLimit RPD Ref Val %RPD RPDLimit Qual Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank 3-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 11 of 12 ► ► ► i � 1 1 / 1 1 1 / 1 1 1 1 1 1 1 CLIENT- Hahn and Associates,Inc. ANALYTICAL QC SUMMARY REPORT Work Order: 0209030 Project: Tigard Library/5927 TestCode: HG—CTS Sample ID CCV SampType: CCV TestCode: HG—CTS Units: mg/Kg Prep Date: 9/7/2002 Run ID: CVAA_020907H Client ID: ZZZZZ Batch ID: 7357 TestNo: SW7471 Analysis Date: 9/7/2002 SegNo: 146012 Analyte Result PQL SPK value SPK Ref Val %REC LowLimit HighLimit RPD Ref Val %RPD RPDLimit Qual Mercury 0.1917 0.0167 0.208 0 92.1 90 110 0 0 Qualifiers: ND-Not Detected at the Reporting Limit S-Spike Recovery outside accepted recovery limits B-Analyte detected in the associated Method Blank J-Analyte detected below quantitation limits R-RPD outside accepted recovery limits Page 12 of 12 KEY TO FLAGS A. This sample contains a Gasoline Range Organic not identified as a specific hydrocarbon product. The result was quantified against gasoline calibration standards. Al. This sample contains a Diesel Range Organic not identified as a specific hydrocarbon product. The result was quantified against diesel calibration standards. A2. This sample contains a Lube Oil Range Organic not identified as a specific hydrocarbon product. The result was quantified against lube oil calibration standards. A3. Results determined to be non detect based on hydrocarbon pattern recognition. The product was carry-over from another hydrocarbon type. _ B. The blank exhibited a positive result greater than the reporting limit for this compound. C. The result confirmed by secondary column or GUMS analysis. CN. See case narrative. CR. Result for this analyte maybe biased due to interferences. Confirmation by GUMS or other technique is recommended. D. Surrogate was diluted outside reporting range. E. Result exceeds the calibration range for the compound. The result should be considered an estimate. F. The positive result for this hydrocarbon is due to single component contamination. The product does not match any hydrocarbon in the fuels library. G. Result may be biased high due to biogenic interferences.Silica gel clean-up recommended. H. Sample was analyzed outside recommended holding times. HT. At clients request,sample was analyzed outside method recommended holding time. J. The result for this analyte is between the MDL and the PQL,and should be considered an estimated concentration. K. Diesel result is biased high due to amount of oil contained in the sample. L. Diesel result is biased high due to amount of gasoline contained in the sample. M. Oil result is biased high due to amount of diesel contained in the sample. MC. Sample concentration is greater than 4x the spiked value;the spiked value is considered insignificant. MI. Outside control limits due to Matrix Interference. MSA. Value determined by Method of Standard Addition. N. Sample appears to contain biogenic material biasing quantification. O. Laboratory Control Standard(LCS)exceeded laboratory control limits,meets CCV criteria. Data meets EPA requirements. P. Detected levels of Methylene Chloride may be due to laboratory contamination,due to previous analysis or background levels. Q. Detection limits elevated due to sample matrix. R. RPD control limits were exceeded. RF. Duplicate failed,due to result being at or near method reporting limit. RP. Matrix spike values exceed established QC limits,post digestion spike is in control. S. Recovery outside control limits. The result for this parameter was greater than the maximum contaminant level or the TCLP regulatory limit. rev.October 23,2001