HomeMy WebLinkAboutMEP2003-00008 Monitoring Reports Surface Mining new TPN - MEP Reports - 2/28/2013 Port Orchard Sand and Gravel Co. Inc.
PO Box 181
Port Orchard, WA 98366
(360) 479-4626 • (253) 857-3006 • (206) 682-6349
February 28, 2013
Mason County
Department of Community Development
Planning Division
P.O. Box 279
Shelton, WA 98584
Re: Mason County Conditional Environmental Permit—
Case No.: MEP2003-00008, Issued 11/3/03, Parcelumim
To Whom It May Concern:
Port Orchard Sand & Gravel Company is the operator of the McEwan Prairie Surface Mine in
Mason County. In accordance with Condition #3 of Mason County Conditional Environmental
Permit MEP2003-00008, we submit the following:
• 2012 Annual Ground Water Monitoring Report prepared by GeoEngineers dated 02/25/13.
Should you have any questions or comments, please feel free to contact me at 253-833-
3705x460.
Sincerely,
ml"404
Mike Schuh
Enclosure
Cc: Dean Moergeli — Port Orchard Sand & Gravel Company
Phil Struck—Parametrix (via email)
2012 Annual Groundwater Monitoring
McEwan Prairie Facility
Mason County, Washington
for
Port Orchard Sand and Gravel Company
February 25, 2013
GEOENGINEER�
1101 South Fawcett Avenue, Suite 200
Tacoma, Washington 98402
253.383.4940
2012 Annual Groundwater Monitoring
McEwan Prairie Facility
Mason County, Washington
File No.1355-023-01
February 25,2013
Prepared for:
Port Orchard Sand and Gravel Company
400 Valley Avenue
Puyallup, Washington 98372
Attention: Mike Schuh
Prepared by:
GeoEngineers, Inc.
1101 South Fawcett Avenue,Suite 200
Tacoma,Washington 98402 0� VVBsh�
253.383.4940 ,�� '�r
&el W. Purdy, LG, LHG -
Hydrogoologist
Senior HydrogeoloLyist , sas `yam
(JOEL W.�AFRUYJI
Water and Natural Resources Director
Fisheries and Wetland Scientist
1Wf:WSW:tt
Disclaimer.Any electronic form,facsimile or hard copy of the original document(ernail,text,table,and/or figure),If provided,and any attachments are
only a copy of tho original document.The original document is storod by GeoEngineers,Inc.and will serve as the official document of record.
Copyright(D 2013 by GeoEngineers,Inc.All rights reserved,
GWENGINEER�
Table of Contents
INTRODUCTION..........................................................................................................................................1
GROUNDWATER MONITORING SCOPE AND METHODS..........................................................................1
GroundwaterLevels...............................................................................................................................2
GroundwaterQuality Monitoring...........................................................................................................2
SurfaceWater Monitoring.....................................................................................................................3
GroundwaterUse Monitoring................................................................................................................3
MONITORINGRESULTS.............................................................................................................................3
GroundwaterLevels...............................................................................................................................3
SurfaceWater Levels.............................................................................................................................4
GroundwaterQuality..............................................................................................................................4
GROUNDWATER FLOW DIRECTION AND SURFACE WATER INTERACTION...........................................5
SUMMARY..................................................................................................................................................6
RECOMMENDATIONS................................................................................................................................7
LIMITATIONS..............................................................................................................................................7
REFERENCES.............................................................................................................................................8
LIST OF FIGURES
Figure 1.Vicinity Map
Figure 2. Monitoring Locations
Figure 3. Groundwater Level Elevations in Piezometers P-1 through P-6
Figure 4. Groundwater Level Elevations in Monitoring Wells MW-1 through MW-4
Figure S.Annual and Monthly Precipitation at Wauna 3 SW Weather Station
Figure 6. Groundwater Level Elevations in Piezometers P-1 through P-6 Between 1998 and 2012
Figure 7.Surface Water Level Elevations in Wetlands A through D and Rex Lake
Figure 8. Groundwater Elevations on April 14, 2005
APPENDICES
Appendix A. Monitoring Well Logs
Figure A-1. Key to Exploration Logs
Figures A-2 through A-5. Log of Monitoring Wells
Appendix B. Field Procedures
Appendix C. Chemical Analytical Program
GWENGiNEER� February25,2013 i Page!
File No.1355-023.01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
INTRODUCTION
GeoEngineers, Inc. (GeoEngineers) has prepared this eighth-year monitoring report for Port Orchard
Sand and Gravel Company regarding the McEwan Prairie Surface Mine. The site, approximately
160 acres of undeveloped land, is located approximately 2 miles northwest of Shelton near Rex
Lake in Mason County, Washington. The site vicinity is shown on Figure 1. Approximately 94 of the
164-acre site may be used for aggregate mining. The purpose of our services is to assess the
hydrogeologic characteristics of the site and analyze the relationship between the groundwater
beneath the site and the surface bodies,specifically Rex Lake and wetlands on and adjacent to the
property. The monitoring of water use, groundwater levels and groundwater quality will be used to
assess the potential impacts of surface mining on groundwater and wetlands. We have prepared
this groundwater monitoring report based on information gathered from 2004 to 2012.
GeoEngineers developed a groundwater monitoring plan for the McEwan Prairie Surface Mine
based on the proposed monitoring plan presented in the May 2002 Supplemental Environmental
Impact Statement (SETS) and our discussions with Port Orchard Sand and Gravel Company. The
purpose of this annual groundwater monitoring report is to present the findings of 8.5 years of
monitoring of surface water wetlands, groundwater levels and groundwater quality.
GROUNDWATER MONITORING SCOPE AND METHODS
The goal of the monitoring is to provide an understanding of groundwater flow directions,
groundwater and surface water level fluctuations, groundwater quality, and groundwater/wetland
interactions and relationships. There are nine groundwater monitoring points on the McEwan
Prairie site. Six 1-inch-diameter PVC wells, herein referred to as piezometers P-1 through P-6, were
installed on January 23 and May 26, 1998 by others. Depths for these piezometers range from 26
to 64 feet below ground surface (bgs). Piezometer P-2 was removed at the end of 2007 because
of its location within the active mine area. The last water level measurement in P-2 was recorded
on October 25, 2007. Four 2-inch-diameter PVC monitoring wells were installed in August 2004 by
GeoEngineers to 40 feet bgs, with 10 feet of screen and aboveground monuments. These wells,
referred to as monitoring wells MW-1 through MW-4, were located along the perimeter of the
property to provide monitoring of boundary conditions. Each of the monitoring wells and
piezometers were surveyed by others to provide location and elevation control. A summary of the
monitoring points at the McEwan Prairie facility is shown in Table 1. A monitoring location map is
presented as Figure 2. Boring logs for monitoring wells MW-1 through MW-4 are presented in
Appendix A.
GEOENGINEER� February25,2013 Page 1
File No.1355-023-01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
TABLE 1. SUMMARY OF MONITORING POINTS AT MCEWAN PRAIRIE FACILITY
Ground Drilled Screened
Depth to Water on Water Level
on
Designation Elevation Depth Interval Depth of Casing 4/4/14/05 Below Top Elevanonation
(feet) (feet bgs) (feet bgs)
14/05
(feet) (feet)'
MW-1 294.1 40 28.5 - 38.5 15.85 259.23
MW-2 295.6 41 30 - 40 15.20 270.33
M W-3 291.0 40 30 - 40 26.54 268.53
M W-4 295.1 41 30 - 40 11.41 284.25
P-1 294.13 30 6 - 16 13.99 281.97
P-2 295.58 64 20 - 30 13.68 283.9
P-3 290.96 38 16 - 26 25.52 268.35
P-4 295.07 26 16 - 26 14.34 282.94
P-5 279.47 41 23 - 38 20.82 261.35
P-6 294.13 46 23 - 38 22.75 273.21
Note:
1 Elevations given in this report are relative to a surveyed benchmark datum,consistent with previous reports related to this
project. The datum is approximately 70 feet higher than the mean sea level datum reported in the U.S. Geologic Survey
Union quadrangle.
The monitoring plan calls for quarterly water quality sampling and bimonthly water level
measurements. Monitoring events for 2012 occurred on January 27, May 3, July 30 and
October 16.
Groundwater Levels
GeoEngineers and Port Orchard Sand and Gravel measured groundwater levels in the monitoring
wells and accessible piezometers previously installed on the property since August 26, 2004.
Groundwater levels were measured at a minimum of every quarter using calibrated water level
probes. Water levels were also collected during water quality sampling events. Water levels were
measured and recorded relative to the rim of the PVC casing and converted to elevations relative to
a surveyed site-specific datum.
In addition to the groundwater level measurements for this monitoring period, the water levels in
the piezometers P-1 through P-6 were also measured between February 1, 1998 and September
17, 2001. These groundwater levels are discussed later in this report.
Groundwater Quality Monitoring
GeoEngineers and Port Orchard Sand and Gravel collected quarterly samples of groundwater from
the monitoring wells for standard laboratory analyses for gasoline- and diesel-range hydrocarbons
(analytical methods NW-TPH-Gx and NW-TPH-Dx, respectively). We also collected in-field
measurements of temperature, pH, specific conductivity and turbidity. Dedicated sampling pumps
were originally installed in the monitoring wells in 2004. Eventually, all of the dedicated pumps
failed and subsequent samples were collected using disposable bailers through May 2012.
Page 2 February 25,2013 GeoEngineers,Inc.
File No.1355-023-01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
Beginning in October 2012, all wells were sampled using low-flow techniques and dedicated
sample tubing. Sampling techniques are described in Appendix B - Field Procedures.
The samples collected during the first two visits on September 3, 2004 and January 4, 2005 were
submitted to Analytical Resources, Inc. in Tukwila, Washington. The samples from the subsequent
visits on were submitted to Severn Trent Laboratories Seattle (STL Seattle) in Tacoma, Washington.
The samples from the October 25, 2007 event were submitted to both STL Seattle and Spectra
Laboratories in Tacoma, Washington. Samples from 2008 through 2012 were submitted to
Spectra Laboratories.
Surface Water Monitoring
Surface water monitoring within the on-site wetlands was also conducted by GeoEngineers and
Port Orchard Sand and Gravel personnel. Staff gages were installed in the four on-site wetlands
and at Rex Lake. The staff gages consist of 2-inch-diameter PVC pipe marked at 0.1-foot intervals.
Ground elevations for each staff gage were surveyed. Wetland monitoring was completed on the
same day as the groundwater monitoring. The water level heights were recorded at each
monitoring station and analyzed for fluctuations, interaction with groundwater and potential
changes in hydrology related to the mining operations.
Groundwater Use Monitoring
Groundwater use monitoring is a component of the monitoring plan. However, no water has been
withdrawn from the two existing water supply wells on site. When the wells are put into production,
flow-meter readings from the water supply wells will be recorded weekly by Port Orchard Sand and
Gravel personnel. GeoEngineers will develop a field worksheet to enter the information pertaining
to the water use at the site. This worksheet will be routinely collected by GeoEngineers and
entered into a spreadsheet for calculating water use. The evaluation of the water usage will be
included in future groundwater monitoring reports.
MONITORING RESULTS
Groundwater Levels
Hydrographs were developed for the piezometers and monitoring wells. For display purposes, the
water level elevations for the piezometers and monitoring wells were grouped together. The water
level elevations for the piezometers P-1 through P-6 are shown on Figure 3. The water level
elevations for the monitoring wells MW-1 through MW-4 are shown on Figure 4. Figures 3 and 4
illustrate the seasonal fluctuation within the shallow groundwater. Generally, the shallow
groundwater elevation rises between October and April during the wetter months and declines
between April and October during the drier months. This trend is evidence of the typical shallow
groundwater response to seasonal precipitation rates.
The seasonal changes in groundwater levels in the piezometers and monitoring wells have ranged
from between 2.3 and 10.4 feet bgs during the monitoring period. The timing of the water level
changes was generally the same at the monitoring points. One piezometer, P-3 (Figure 3), appears
to have a smaller response. However, this pattern is the result of the water levels in P-3 dropping
GEOENGINEER� February 25,20 13 Page
File No.1355-023-01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
below the bottom of the piezometer at approximately 28 feet bgs (Elevation 266 feet) during a
portion of the monitoring period.
Figure 5 shows the monthly and annual precipitation from National Oceanic and Atmospheric
Administration's (NOAA) Wauna 3W Minter Creek weather station, located approximately 22 miles
northwest of the site. Other NOAA weather stations located nearer to McEwan Prairie, such as
Grapeview or Shelton, were inactive during the monitoring interval. Note that months with missing
data at the Wauna station were replaced with 75 percent of the corresponding monthly total from
the more complete dataset at NOAA's Tacoma 1 station. The precipitation rates show that from
2001 to 2005, rainfall was near or below the annual average of 52.01 inches. In 2006, rainfall
was over 12 inches above average. In 2007 through 2009, rainfall was at or below average and
rainfall was above average for 2010. The rainfall for 2011 was slightly below average and rainfall
for 2012 was likely below normal,though historical records are not yet available for August through
December 2012. The historical water levels in the piezometers between 1998 and 2012 are
shown on Figure 6.
Surface Water Levels
A hydrograph was developed for the staff gages placed in Wetlands A through D and Rex Lake. The
surface water level elevations are shown on Figure 7. The hydrograph shows that surface water
occurs seasonally in the wetlands, mainly during the winter months. Water levels in Rex Lake
fluctuate with the seasons. Comparing the lowest and highest measured water levels of 2012,the
total fluctuation in Rex Lake was between relative Elevation 276.95 and 280.45 feet.
Groundwater Quality
There have been 31 groundwater quality sampling events for the quarterly monitoring program. A
summary of the results are presented in Table 2. The chemical analytical program is presented in
Appendix C. The laboratory analytical reports are available upon request. Petroleum hydrocarbons
were not detected in analyzed groundwater samples from all sampling events in 2012.
TABLE 2. SUMMARY OF GROUNDWATER QUALITY RESULT RANGES FROM MONITORING WELLS AT
MCEWAN PRAIRIE FACILITY
Parameter MW-3. MW-2 MW-3 MW-4
NW-TPH-Gx Gasoline(mg/L) NDl to 0.0632 ND to 0.0555 ND ND
NW-TPH-Dx Diesel-range(mg/L) ND to 0.146 ND to 0.263 ND to 0.1747 ND
NW-TPH-Dx Motor Oil-range(mg/L) ND ND to 0.334 ND ND to 0.415
pH 6.35 to 7.95 6.13 to 8.0 6.06 to 8.0 5.98 to 7.63
Temperature(0C) 8.99 to 10.2 9.14 to 11 8.49 to 12.2 9.2 to 11.4
Conductivity(pS) 65 to 127 50 to 113 50 to 112 46 to 116
Turbidity(NTU) 5 to 383 4 to 281 3 to 267 5 to 250
Notes:
1 ND=Not Detected Above Reporting Limits 5 August 8,2007
2 October 17,2006 6 January 20,2010
3 July 20,2006 7 July 20,2010
4 December 22,2006
Page 4 February 25,2013 GeoEngineers,Inc.
File No.1355-023-01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
Gasoline-range petroleum hydrocarbons were detected at concentrations less than the Model
Toxics Control Act (MTCA) Method A groundwater cleanup level (0.8 mg/L) in the sample collected
from MW-1 on October 17, 2006 (0.063 milligrams/liter [mg/L]). Gasoline-range petroleum
hydrocarbons were detected at concentrations less than the MTCA Method A groundwater cleanup
level (0.8 mg/L) in the sample collected from MW-2 on August 8, 2007 (0.055 mg/L). Gasoline-
range petroleum hydrocarbons were not detected in analyzed groundwater samples from all other
sampling events, including re-sampling events followingthe above-mentioned detections.
Diesel-range petroleum hydrocarbons were detected at concentrations less than the MTCA
groundwater cleanup level (0.5 mg/L) in the samples collected from MW-2 on July 20, 2006 (0.26
mg/L),from MW-3 on January 20, 2010 and from MW-1 on July 20, 2010. Diesel-range petroleum
hydrocarbons were not detected in analyzed groundwater samples from all other sampling events,
including re-sampling events following the above-mentioned detections.
Motor oil-range petroleum hydrocarbons were detected at concentrations less than the MTCA
groundwater cleanup level (0.5 mg/L) in the sample collected from MW-2 on December 22, 2006
(0.33 mg/L). Motor oil-range petroleum hydrocarbons were detected at concentrations less than
the MTCA groundwater cleanup level (0.5 mg/L) in the sample collected from MW-4 on August 8,
2007 (0.41 mg/L). Motor oil-range petroleum hydrocarbons were not detected in analyzed
groundwater samples from all other sampling events, including re-sampling events following the
above-mentioned detections.
To investigate the sample handling procedures as a potential source of the hydrocarbons, the use
of trip blanks were re-incorporated in the field sampling procedure starting with the December 20
and 22, 2006 sampling events. Diesel-range and gasoline-range petroleum hydrocarbons were not
detected in the trip blank samples. For the October 25, 2007 sampling event, duplicate samples
were submitted to both STL Seattle and Spectra Laboratories. Both labs reported that petroleum
hydrocarbons were not detected in any of the samples, despite diesel being detected in the
laboratory method blank at STL Seattle.
In-field measurements indicate that temperature, pH and specific conductivity results are generally
within expected ranges. Turbidity was highly variable as would be expected when withdrawing
water with high-flow pumps or bailers at prescribed rates and infrequent sampling intervals.
Turbidity is generally below 10 nephelometric turbidity unit (NTU) when using low-flow sampling
techniques.
GROUNDWATER FLOW DIRECTION AND SURFACE WATER INTERACTION
A potentiometric surface map was developed (Figure 8) using the groundwater elevations
measured on April 14, 2005 when groundwater and surface water levels were generally the
highest of 2005. The groundwater elevation contours shown on Figure 8 indicate that groundwater
flows from north to south with a horizontal gradient of 30 feet/mile. The water levels in Rex Lake
when compared to the closest monitoring point of piezometer P-1, located approximately 750 feet
to the west,show a similar timing and magnitude of response to precipitation trends(Figures 3 and
7). Rex Lake fluctuated approximately 3.5 feet in 2012. This suggests that Rex Lake is in
continuity with the shallow groundwater beneath the McEwan Prairie site.
GEOENGINEER� February 25,20 13 Pages
File No.1355.023.01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
Surface water elevations in the wetlands appear to generally correspond with groundwater
elevations in adjacent monitoring wells. Surface water in the wetlands appeared to respond to
rainfall trends with similar timing and magnitude as groundwater responses. This suggests that
the wetlands are in continuity with the shallow groundwater beneath the McEwan Prairie site.
SUMMARY
GeoEngineers and Port Orchard Sand and Gravel performed groundwater monitoring between
August 2004 and October 2012 at the McEwan Prairie Facility in general accordance with the
monitoring plan submitted in the May 2002. Petroleum hydrocarbons were not detected in
analyzed groundwater samples from all sampling events of 2012.
Groundwater and surface water levels are highest during the months of March and April and lowest
in the months of September and October based on the current and historical water monitoring.
Groundwater levels fluctuated approximately 4 to 10 feet in 2012. Rex Lake fluctuated
approximately 3.5 feet in 2012, similar in magnitude and timing with water levels in piezometer
P-1, the closest groundwater monitoring point. This water level response to rainfall trends in
groundwater monitoring points, Rex Lake and the wetlands indicates a hydraulic connection
between groundwater levels and on-site surface water levels.
Groundwater quality results show that in-field measurements of pH, turbidity, conductivity and
temperature are generally stable and fall within the expected range for natural groundwater in the
Puget Sound region (e.g., Garling and others, 1965). Analytical results indicate petroleum-range
hydrocarbons were detected in seven of the samples (approximately 2 percent of the analyses) at
concentrations less than the MTCA Method A cleanup levels since the inception of the monitoring
program.
Possible explanations for the detection of hydrocarbons in the samples include: 1) hydrocarbons
are present in shallow groundwater beneath the site; 2) hydrocarbons were introduced to the
samples during the sampling process; or 3) petroleum hydrocarbons were introduced in the
laboratory.
In our opinion, it is unlikely that the groundwater beneath the site has been impacted by
petroleum-range hydrocarbons from mining activities at the site. Non-mining sources of
contamination could be possible. Monitoring wells MW-1 and MW-2 are located adjacent to
residences. Activities related to those properties, along with possibly off-road vehicle traffic,
residential discharges, or other unauthorized anthropogenic activities could also be a source of
hydrocarbons.
Use of trip blanks (a sample filled at the laboratory that is carried along with the sample bottles to
and from the laboratory) were re-instigated for the December 2006 and other sampling events due
to the low level petroleum hydrocarbon detections at the site.
Petroleum hydrocarbons have been detected in the laboratory's method blank (a laboratory control
sample) for several of the sampling events. The method blank is used to determine if
contamination has been introduced through laboratory activities. As part of this investigation, we
Page 6 February 25,2013 GeoEngineers,Inc.
File No.1355-023-01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
have reproduced the analytical laboratory reports to include the method blank results above the
minimum detection limit.
Petroleum hydrocarbons were not detected in analyzed groundwater samples from the October 25,
2007 sampling event. Based on these and other non-detect results and the apparent randomness
of the detections, it is our opinion that the detections in the seven samples are not an indication of
a contaminated aquifer but more likely a result of sampling or laboratory contamination. After our
duplicate sampling on October 25, 2007, we changed laboratories to Spectra Laboratories due to
the common-place detections of petroleum hydrocarbons in laboratory method blanks at STL
Seattle.
The standard sampling procedure of purging 3 to 5 casing volumes of water results in stable field
parameters, but often the samples are turbid (NTU >100). Therefore, efforts were made to reduce
the turbidity of the samples by implementing low-flow groundwater sampling procedures outlined in
the EPA Ground Water Issue Paper, Low-Flow (Minimal Drawdown) Water Sampling Procedures
(Puls and Barcelona, 1996). Groundwater samples are obtained from the well using the technique
by pumping the monitoring wells at rates between 0.1 to 0.5 L/min (0.03 to 0.13 gpm). This
procedure is intended to reduce the disturbance of the aquifer. As a result of the new sampling
procedure,turbidity generally was less than 10 NTU.
RECOMMENDATIONS
GeoEngineers makes the following recommendations for McEwan Prairie monitoring based on the
analysis of information gathered:
■ Continue quarterly monitoring of water levels in the piezometers, monitoring wells and
wetlands. The most important months are April and October of each year, when the highest
and lowest water levels, respectively, usually occur. We recommend that groundwater and
surface water levels be measured in January,April,July and October of each year.
■ We recommend that water quality sampling interval should continue to be conducted twice a
year in April and October. If mining operations were to cease for more than six months, the
sampling can be conducted once per year in October until mining operations resume at the
site. A September 11, 2007 letter from Mason County Department of Community
Development stated that if there were no detections of hydrocarbons after a calendar year,
twice a year sampling would be allowed. No hydrocarbons were detected in 2008, 2009, 2011
and 2012. Twice-a-year sampling was implemented in 2012.
■ Continue low-flow sampling techniques to reduce the turbidity of samples by purging the wells
at pumping rates as low as 0.1 L/min.
LIMITATIONS
GeoEngineers has performed this groundwater and wetland monitoring in general accordance with
the scope and limitations of our proposal. Within the limitations of scope, schedule and budget,
our services have been executed in accordance with the generally accepted practices for
GEoENGINEER� February 25,2013 Page 7
File No.1355-023.01
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
groundwater and wetland monitoring in this area at the time this report was prepared. No warranty
or other conditions express or implied, should be understood.
This report has been prepared for the exclusive use of Port Orchard Sand and Gravel Company, and
authorized agents and regulatory agencies following the described methods and information
available at the time of the work. No other party may rely on the product of our services unless we
agree in advance to such reliance in writing. The information contained herein should not be
applied for any purpose or project except the one originally contemplated.
REFERENCES
Garling, M.E., Molenaar, D. and others. 1965. Water resources and geology of the Kitsap
Peninsula and Certain Adjacent Islands: Washington Division of Water Resources,
Water-Supply Bulletin 18, 309 p.
Mason County Department of Community Development. August 1999. Draft Environmental
Impact Statement, McEwan Prairie Surface Mine,Technical Appendices.
Parametrix. May 2002. Supplemental Environmental Impact Statement McEwan Prairie Surface
Mine. Prepared for Mason County Planning Department.
Parametrix. January 2003. Final Environmental Impact Statement McEwan Prairie Surface Mine.
Prepared for Mason County Planning Department.
Puls, R.W. and M.J. Barcelona, 1996. Low-Flow(Minimal Drawdown) Ground Water Sampling
Procedures. U.S. EPA, Ground Water Issue, Publication Number EPA/54O/S-95/504,
April 1996.
Page 8 February25,2013 GeoEngineers,Inc.
File No.1355-023-01
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Notes:
E. 1.The locations of all features shown are approximate.
5 2.This drawing is for information purposes. It is intended to McEwan Prairie Facility
assist in showing features discussed in an attached document.
° GeoEngineers,Inc.cannot guarantee the accuracy and content Mason County, Washington
= of electronic files. The master file is stored by GeoEngineers, /�
o Inc.and will serve the official record of this communication. G W E N G I N E E R SrFigure Data Sources:ESRI Data&Maps,Street Maps 2008. 1
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PVC-BASIS OF VERTICAL DATUM IS PER
j 2. ELEVATIONS FOR KETLAND STAFF GAGES ARE MASON BM SHOWN ON RrGHT dF
GROUND SURFACE AT BASE OF STAFF GAGE WAY PLANS MR 1dcEWAN PRAIRIE
O ROAD DATED FEBRUARY 17, 1967 Monitoring Locations
O
r7 Notes:
0 1.The locations of all features shown are approximate. MCEWan Prairie 113 Facility
Ln 2.This drawing is for information purposes.It is intended to assist in showing features discussed in an attached Mason County, Washington
document.GeoEngineers,Inc.can not guarantee the accuracy and content of electronic files.The master file is stored
by GeoEngineers,Inc.and will serve as the official record of this communication.
= Reference:Drawing is from Parametrix.2005 G E O E N G I N E E R Figure 2
S�
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- - - ....... - _....- ....-......•..... - - - ......----.............. ---------------- --.... - - i
i Piezometer
i ei'
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_.........
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1 i v e e Piezometer P-6
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(Q f0 (0 t0 (B fQ (C (6 f0
Date
2012 Annual Groundwater Groundwater Level Elevations
GEOENGINEERS Monitoring at McEwan Praire Facility in Piezometers P-1 Through Figure 3
Port Orchard Sand and Gravel P-6
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Date
2012 Annual Groundwater Groundwater Level Elevations
G EO E N G I N E E RS Monitoring at McEwan Praire Facility in Monitoring Wells MW-1 Figure 4
Port Orchard Sand and Gravel Through MW-4
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T T T T T T T T T T T T T
Date
2012 Annual Groundwater Annual and Monthly
S Monitoring at McEwan Praire Facility Precipitation at Wauna Figure 5
GEOENGINEER
Port Orchard Sand and Gravel 3 SW Weather Station
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-..y_._..........."---._._.._
o- o -o Wetland B
+- -+ Rex Lake
255 -- —-------- Wetland C -- --- __-- ------ ----__ - --_._._......_ _..:�..._-----
I •— • ---• Wetland D i
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;
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Date
2012 Annual Groundwater Surface Water Level Elevations
G EO E NG I N E E RS Monitoring at McEwan Praire Facility in Wetlands A Through D Figure 7
Port Orchard Sand and Gravel and Rex Lake
w
z
a
REX LAKE ' p _ - c"'=_'-� � N� _•'
STAFF GAUGE
GRND=278.45
CIO N1.58
4.0 l
N 0 278.35� E i0018DDJei4.o5
00 ---
BENCH MARK I'S3-15
=296.62 ' ��� Illl
1�`�• 281.97 -1 TOP., Pl',295.96 -�
1 -' MW-3 �' t
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E 1 329:95 !1 TOP CSG=295 43
J TOP 2 ft�C=295.07,
W-1 N 71223239
TOP 6- SING.295.53 �' �E 1001255.77
GRND=2 0
I ( E 1001S0
TOP-1._PVC 293.87 PtAM
68.3 V ++ PIT 1 U
GRNO=290.96'• � PT 2 UPLAN!'p 27a.
l N 712303.3a� 27
E 1000833.41
fI( MW-4�TON WELL 4 ; N 7 1513 k N 71 24.96
o I Q 284.25`TOP CSG=295 94--- 1 2.17
E-10 68.17 -_ F 1 2-
TOP 2-PIC=295.66 P-2 -
9 (" N-714430 36 283.90
I F 100078i.3s o P-2 ( 4 WETLAN "c'A267. 5 ' t
I{ j TOP - PVC 297.58 STAW-
GRN0-2 4.15----� r'
N { GRND�295.6 t
O f hl N 713471.30
T�17J1547.84r"� � � � � �PIT-J \SOIL I
I' E 1000611.58 f 1 E 000623.1 J ` PIT WET SUL 266.90
� �_268. � i t N,7106 .42;",j A TLAND *A-
GAUGE
7 416.98 1 E`1000 9.78
AFF"GAUGE 1 49:88'
266;59
282.94 TOP-um, D 1'PVC z97.2a I i e x TLANO �-
GRNO-295.1 I AFF GAUGE �. y
j E 1 .35Q57 N 713139.32 , 1` ON
E 1000295.62 , r' N 71094 4.79 7OP CSG?29`
E1000243.16 MW-11 ;TOP 2- FYC=275.08
N 710126.04
259.23 ( E 100064.04
ti f 261.35 ORNO-279.47
WETLAND e- 1 273.21 N 71077Z49,'
IEGEND ` STAFF GALIW GR D-284.649 ' + I TOP PYC CS -2959 f 899940.22
N 71J419.74 GRND=292.96
• MONlTDR1NG WELL 2004 E 09903 7B N 712fOQ3 `� �� �� `•1 �+
o ( ) E,699800 I 1
O PIEZOMETER (1998) ` I -MON WELL 2 l�
TOP CSG285.9800
,-
A WETLAND STAFF GAGE (1948)
C� �ts TOP 2-PY:r285.53
_MW-2 J N 711416.60
270.3$0 _F 999421.65
A WETLAND SURVEY POINT (2004)
O ---PROPERTY BOUNDARY --�_ 92
N
O NOTES
� ? �O 400 0 400
7. ELEYA71ONS FOR PlEZOMEIFRS(7998) ARE DATUM: HORIZONTAL DATUM IS NAD d.3/9i
Q AT TOP OF 1-PVIG BASIS OF VERTICAL DATUM IS PER O V
Feet
U 2. LIEVA71ONS FOR WETLAND STAFF GAGES ARE MASON BM SHOW ON RICNT OF
1-1 GROUND SURFACE AT BASE OF STAFF GALE WAY PLANS FOR McEWAN PRAIRIE
00 ROAD DATED FEBRUARY 17. 1987 Groundwater Elevations on April 14, 2005
1-1
Notes:
0 1.The locations of all features shown are approximate. Legend McEwan Prairie Facility
LO 2.This drawing is for information purposes.It is intended to assist in showing features discussed in an attached Groundwater contour(5 feet) Mason County, Washington
_ 285 - - - - -
document.GeoEngineers, Inc.can not guarantee the accuracy and content of electronic files.The master file is stored
by GeoEngineers,Inc.and will serve as the official record of this communication.
= Reference:Drawing is from Parametrix.2005 G W E N G I N E E R Figure 8
ry
O
�. - • -- - - APPENDIX A
Monitoring Well Logs
l
r
t.
� � 1
SOIL CLASSIFICATION CHART ADDITIONAL MATERIAL SYMBOLS
MAJOR DIVISIONS SYMBOLS TYPICAL SYMBOLS TYPICAL
GRAPH LETTER DESCRIPTIONS GRAPH LETTER DESCRIPTIONS
WELL-GRADED GRAVELS,GRAVEL-
CLEAN ° ° GW SAND MIXTURES — CC Cement Concrete
GRAVEL GRAVELS —AND O O POORLY-GRADED GRAVELS,
GRAVELLY (-ITTLE OR NO FINES) O O GRAVEL•SAND MIXTURES
SOILS o o GP AC Asphalt Concrete
COARSE o SILTY GRAVELS,GRAVEL•SAND-
GRAINED MORE THAN 50% GRAVELS WITH o GM SILT MIXTURES CR Crushed Rock/
OF COARSE FINES Quarry Spalls
SOILS FRACTION
RETAINED ON NO. (APPRECIABLE AMOUNT GC CLAYEY GRAVELS,GRAVEL-SAND-
4 SIEVEOF CLAY MIXTURES
� TS Topsoil/
Forest Duff/Sod
SW WELL-GRADED SANDS
CLEAN SANDS SAND-GRAVEL MIXTURES
MORE THAN 50% SAND
RETAINED ON NO. AND (LITTLE OR NO FlNES)
200 SIEVE SANDY S^P POORLY-GRADED SANDS,
SAND-GRAVEL MIXTURES �/ Measured groundwater level in
SOILS �7 �L
exploration,well,or piezometer
MORE THAN 50% SANDS WITH SM SILTY SANDS,SAND-SILT
OF COARSE MIXTURES Groundwater observed at time of
FRACTION FINES
PASSING NO.4 — exploration
SIEVE (APPRECIABLE AMOUNT �+�+ CLAYEY SANDS,SAND-CLAY
OF FINES) Jar MlxruREs = Perched water observed at time of
exploration
INORGANIC SILTS,ROCK FLOUR,
ML CLAYEYSILTS WITH SLIGHT � Measured free product in well or
INORGANIC CLAYS OF LOW TO — piezometer
SILTS MEDIUM PLASTICITY,GRAVELLY
AND LIQUID LIMIT CL CLAYS,SANDY CLAYS,SILTY CLAYS, Graphic Log Contact
GRAINED CLAYS
FINE LESS THAN 50 LEAN CLAYS
SOILS OL ORGANIC SILTS AND ORGANIC Distinct contact between soil strata or
SILTY CLAYS OF LOW PLASTICITY geologic units
INORGANIC SILTS,MICACEOUS OR Approximate location of soil strata
MORE THAN 50% MH DIATOMACEOUS SILTY SOILS change within a geologic soil Unit
PASSING NO.200 I I g g g
SIEVE
SILTS LIQUID LIMIT / ``l..l IIN�TGANICCLAYS OFHIGH Material Description Contact
GREATEND R THAN 50
CLAYS Distinct contact between soil strata or
OH ORGANIC CLAYS AND SILTS OF geologic units
MEDIUM TO HIGH PLASTICITY
____ Approximate location of soil strata
PEAT HUMUS,SWAMP SOILS WITH change within a geologic soil unit
HIGHLY ORGANIC SOILS PT HIGH ORGANIC CONTENTS
NOTE: Multiple symbols are used to indicate borderline or dual soil classifications
Laboratory/Field Tests
Sampler Symbol Descriptions %F Percent fines
AL Atterberg limits
. 2.4-inch I.D.split barrel CA Chemical analysis
CID Laboratory compaction test
Standard Penetration Test(SPT) CS Consolidation test
DS Direct shear
® Shelby tube HA Hydrometer analysis
MC Moisture content
® Piston MD Moisture content and dry density
OC Organic content
PM Permeability or hydraulic conductivity
Direct-Push PP Pocket penetrometer
® Bulk or grab SA Sieve analysis
9 TX Triaxial compression
UC Unconfined compression
VS Vane shear
Blowcount is recorded for driven samplers as the number
of blows required to advance sampler 12 inches(or Sheen Classification
distance noted). See exploration log for hammer weight
and drop. NS No Visible Sheen
SS Slight Sheen
A"P"indicates sampler pushed using the weight of the MS Moderate Sheen
drill rig. HS Heavy Sheen
NT Not Tested
NOTE: The reader must refer to the discussion in the report text and the logs of explorations for a proper understanding of subsurface conditions.
Descriptions on the logs apply only at the specific exploration locations and at the time the explorations were made;they are not warranted to be
representative of subsurface conditions at other locations or times.
KEY TO EXPLORATION LOGS
GMENGINEER� FIGUREA-1
Date(s) 08/26/04 Logged VRE Checked JWP
Drilled By By
Drilling Drilling Sampling
Contractor Holt Method HSA Methods Split Spoon
Auger HSA-4 inch Hammer 300 lb hammer/30 in drop HSA
Data Data p Equipment
ment
Total Well Ground Surface Groundwater
Depth(ft) 40 Elevation(ft) 27258 Elevation(ft) 254.18
Vertical MSL Datum/ Easting(x): 100064.04
Datum System Surveyed I Northing(y): 710126.04
SAMPLES WELL
CONSTRUCTION
2 a °' E J MATERIAL DESCRIPTION
_ o a 2.5'Stickup
m £ m E z u o c - Steel
a� a) 0 3 cc a a -0 N j surface
w :? o m a o o m monument
0 m co co CO CO c0 �E U p
GM Fine gravel with fine sand(loose to medium dense,moist)
o Surface seal
270 6 18 t
0
5
00
265 16 67 2 SM Brown silty fine sand with gravel and cobbles(dense to Schedule 40
very dense,moist) PVC casing
10
260 10 50/4" 3 Brownish gray silty fine sand/sandy silt with gravel and
occasional cobbles(very dense,moist)(till?)
15
Bentonite
seal
255 18 59 4 Gray silty fine sand to sandy silt with gravel and 1
occasional cobbles,1-inch seam of fine to medium sand
20 with trace silt at 18.6 feet(dense,moist)
250 6 50/6" 6 Gray silty fine sand to fine sandy silt with gravel(very
dense,wet)(till)
rn 25
N -
_N
11 245 6 50/6" 6 Gray silty fine sand with gravel(very dense,moist to wet)
Lu 30
a'
c�
g 240 11 5015" GP Fine gravel with sand(dense,wet)
° Gray silty fine sand with gravel,occasional gravel layers
35 ° (very dense,moist to wet)(till) Schedule 40
o PVC screen
z o
0 235 6 50/6" s SP-SM Gray fine to medium sand with silt(very dense,wet) end plug
o Fine to medium gravel with sand and silt(very dense,wet)
2 40
m
65
F_
w
230
O
a
0 45
Note:See Figure A-1 for explanation of symbols.
U
K
O
H
K
LOG OF MONITORING WELL MWA
Project: McEwan Prairie Surface Mine Groundwater Monitoring
LL
G EU E N G I N E E R Project Location: McEwan Prairie, Washington
Figure A-2
> Project Number: 1355-023-00 Sheet 1 of 1
Dates) 08/26/04 Logged VRE Checked JWP
Drilled By BY
Drilling Holt Drilling HSA Sampling $ Ilt Spoon
Contractor Method Methods p p
Auger HSA-4 inch Hammer 300 lb hammer/30 in drop Drilling HSA
Data Data Equipment
Total Well 41 Ground Surface 283 28 Groundwater 262 28
Depth(ft) Elevation(ft) Elevation(ft)
Vertical Datum/ Easting(x): 999421.65
Datum MSL System Surveyed Northing(y): 711416.6
SAMPLES WELL
z v CONSTRUCTION
c: W E o
w _ W o a = MATERIAL DESCRIPTION o 2.3'Stickup
io = d ° E Z 0 Steel
> a f6 > y m t n 0 a� C L surface
ul CD 0 Q o E m E o o Z'� monument
0 Of m cn (n (9 (0<n 2 U o
SM Brown silty fine sand with gravel,occasional cobbles
(loose,moist) —Surface seal
280
8 14 1
5
GM Fine gravel with sand(dense,moist)
275 6 47 z SM Gray silty fine sand with gravel and cobbles(dense,dry) Schedule a
PVC casing
10
SP-SM Brown medium sand with silt and gravel(dense to very
15 69 3 dense,dry)
270
15 Bentonite
seal
265 15 39 4 GP-GM Brown fine gravel with fine sand and silt(medium dense,
Sp-SM moist
20 Brown fine to medium sand with trace silt(medium stiff,
moist) 1
GP Fine gravel with fine sand(medium dense,wet)
260 18 27 s ° SP Fine to medium sand with trace silt(medium dense,wet)
m 25
N GM Sandy fine gravel(dense,wet)
t o
255 16 63 6
> o
W 30
GP Fine gravel with sand(dense,wet)
'a o
c�
0 18 65 °
N 250 : SP-SM Fine to medium sand with silt and gravel dense wet
0
o GP Fine gravel with sand(dense,wet)
35 Schedule 40
Jo PVC screen
z o
c245 17 81/11" 8 Fine gravel with sand(verydense wet
SP Fine to medium sand with trace silt(very dense,wet)
0
M 40 2 50/6" 9 End plug
in
U
W
0 240
o_
5 45
Note:See Figure A-1 for explanation of symbols.
v
0
0
LOG OF MONITORING WELL MW-2
Project: McEwan Prairie Surface Mine Groundwater Monitoring
Lu
Project Location: McEwan Prairie, Washington
FigureA-3
> Project Number: 1355-023-00 Sheet 1 of 1
Dats
Drilled) 08/26/04 Bygged VRE Byecked JWP
Drilling Holt Drilling HSA Sampling Split Spoon
Contractor Method Methods p p
Da Aug r HSA-4 inch Hammer 300 lb hammer/30 in drop Drilling HSA
DataEquipment
Total Well 41 Ground Surface 292 36 Groundwater 262.36
Depth(ft) Elevation(ft) Elevation(ft)
Vertical Datum/ Easting(x): 1001255.77
Datum MSL System Surveyed Northing(y): 712232.39
SAMPLES WELL
a) CONSTRUCTION
t 2 o a _ J MATERIAL DESCRIPTION o 2.7'Stick up
Z
@ ° o c Steel
a) Q > `� = a a m surface
t11 p� o .fin E m o f c monument
m in in 6 COW 1 gU p�
0 SM Brown silty fine sand with gravel(loose,dry to moist)
urface seal
290 3 16 t
5
285 6 15 z SM Brown silty medium to coarse sand with gravel(loose,dry
Schedule 40
to moist) PVC casing
10
280 4 23 3 GM Gravel with fine sand and occasional cobbles(medium
° dense,moist)
15
Bentonite
seal
0
275 8 1 4 GM Fine gravel with fine sand and coarse gravel(loose,dry to
° moist)
20
0
270 9 27 s SP Brown coarse sand with gravel(loose to medium dense,
SP dry to moist
Brown sand with trace silt and occasional gravel(loose to
N25 medium dense,dry to moist
N ° GP-GM Gravel with coarse sand and silt(dense,wet)
°
265 8 52 6 SM Brown silty coarse sand with gravel(dense,dry)
30 1
a
260 ° GP-GM Silty fine to coarse sand(very dense,wet)
11 50/4" 7 °
N O
O
N O
35 o Schedule 40
o PVC screen
z °
CL 0 255 18 77 g SM Silty fine to medium gravel(very dense,wet)
o SM Gray coarse sand with silt(very dense,wet)
m 40 End plug
in
v 250
ui
O
9z
0 45
Note:See Figure A-1 for explanation of symbols.
U
O
H
K
LOG OF MONITORING WELL MW-3
Project: McEwan Prairie Surface Mine Groundwater Monitoring
Lu
Project Location: McEwan Prairie, Washington
FigureA-4
> Project Number: 1355-023-00 Sheet 1 of 1
Date(s) 08/26/04 Logged VRE Checked JWP
Drilled By BY
Drillin DrillingSam lin
Contractor Holt Metho HSA Met od s Split Spoon
Auger HSA-4 inch Hammer 300 lb hammer/30 in drop Drilling HSA
Data Data Equipment
Total Well 41 Ground Surface 293 29 Groundwater 280 79
Depth(ft) Elevation(ft) Elevation(ft)
Vertical MSL Datum/ Surveyed Easting(x): 1000782.39
Datum System y Northing(y): 714430.36
SAMPLES WELL
a CONSTRUCTION
C v o N
s B o a = MATERIAL DESCRIPTION o 2.5'stickup
Co a`) ? E Z 0 " - Steel
a) o w in a n a.° N al � surface
w 0 aa) o = m c2 2 >, o o i'� monument
0 E tY m cn C15 0 0 to 20 0
SM Brown silty fine sand with gravel(loose,moist)
Surface seal
290 14 17 t SP-SM Brown silty medium to coarse sand with gravel(loose,dry)
5
SM-GM Brown coarse sand to fine gravel with silt(loose to
medium dense,dry)
285 9 34 2 Schedule 40
.:'T PVC casing
10
° GP-GM Brown fine gravel with fine sand and occasional cobbles
° (loose to medium dense,wet)
3 O
280 5 25 O -
O
15 o Bentonite
0 seal
0
275 8 28 4 SM Brown silty fine sand with fine gravel(medium dense,
Mwet)
20 0 GP Fine gravel with coarse sand(loose,wet)
270 9 22 5 ° SP Fine sand with trace silt and occasional gravel(loose,wet)
occasional seams of medium to coarse sand with silt
rn 25
N
SM-NE Gray silty fine sand/fine sandy silt with trace gravel and
0 6 silty fine sand with gravel seams(loose to medium
265 16 29 dense,wet)
Lu 30
GP Fine gravel with trace sand(loose to medium dense,wet)
18 24 SM Brown silty fine sand with gravel(loose to medium dense,
0 260 wet)
35 Schedule 40
PVC screen
zSP-SM Gray gravelly sand with silt,coarse sand seams(medium
255 8 24
8 dense,wet)
40 ° GP Fine gravel with trace sand(medium dense,wet) End lu
M P g
m
t--
U
W
0 250
a
0 45
Note:See Figure A-1 for explanation of symbols.
U
O
H
0
LOG OF MONITORING WELL MW-4
Project: McEwan Prairie Surface Mine Groundwater Monitoring
Lu
Project Location: McEwan Prairie, Washington
FigureA-5
Project Number: 1355-023-00 Sheet 1 of 1
APPENDIX B
Field Procedures
•
• f �
o
t
t
,
t
i
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
APPENDIX B
FIELD PROCEDURES
Water Level Measurements
The water level in each well was measured to the nearest one-hundredth (0.01) of a foot using an
electric water level indicator. The water level indicator was cleaned with distilled water rinse prior
to use in each well. The depth to water was measured from a specific measuring point at the top
of the well casing. Well casing elevations were surveyed relative to a site datum provided by
others. Water elevations were calculated for each monitoring well by subtracting the water depth
from the casing rim elevations.
Well Purging
Each well casing was purged using pumping equipment or disposable bailers. A water quality
measuring device (e.g. Horiba U-22)was used to measure geochemical parameters during purging.
Purging was terminated in each well and groundwater samples were obtained when at least
3 casing volumes were purged and conductivity, dissolved oxygen, pH, and temperature
measurements varied by no more than 10 percent for three consecutive readings.
Low-flow sampling techniques of Puls and Barcelona (1996) were implemented in 2011 to reduce
the disturbance of the aquifer by pumping the wells at rates between 0.1 and 0.5 L/min.
Samples were obtained in laboratory-prepared bottleware, labeled and placed in a cooler with ice
for transport under chain-of-custody documentation to Analytical Resources, Inc. in Tukwila,
Washington,STL Seattle, in Tacoma, Washington and Spectra Laboratories in Tacoma, Washington
for chemical analysis.
GEoENGINEERS February 25,2013 Page B-1
File No.1355-023.01
1
• ' ' �' APPENDIX C
Chemical Analytical Program
1
f
s
e
2012 ANNUAL GROUNDWATER MONITORING Mason County,Washington
APPENDIX C
CHEMICAL ANALYTICAL PROGRAM
Samples
Chain-of-custody procedures were followed during the transport of the field samples to the
accredited analytical laboratory. The samples were held in cold storage pending extraction and/or
analysis. The analytical results and quality control records are included in this appendix.
Analytical Data Review
The laboratory maintains an internal quality assurance program as documented in its laboratory
quality assurance manual. The laboratory uses a combination of blanks, surrogate recoveries,
duplicates, matrix spike recoveries, matrix spike duplicate recoveries, blank spike recoveries and
blank spike duplicate recoveries to evaluate the analytical results. The laboratory also uses data
quality goals for individual chemicals or groups of chemicals based on the long-term performance
of the test methods. The data quality goals were included in the laboratory reports. The laboratory
compared each group of samples with the existing data quality goals and noted any exceptions in
the laboratory report. Data quality exceptions documented by the accredited laboratory are
reviewed by GeoEngineers and are addressed in the "Data Quality Exception Summary" section of
this appendix.
Data Quality Exception Summary
Significant data quality exceptions were not noted in the laboratory reports. Based on our review of
the laboratory reports, it is our opinion that the analytical data are of acceptable quality for their
intended use in this study.
GEOENGINEERS� February 25,2013 Page C-1
File No.1355-023-01
ASPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
05/17/2012
Project: McEwan Prarie
GeoEngineers, Inc. Client ID: MW-1
1101 Fawcett Sample Matrix: Water
Suite 200 Date Sampled: 05/03/2012
Tacoma, WA 98402 Date Received: 05/04/2012
Spectra Project: 2012050155
Spectra Number: 1
Analyte Result Units Method
Diesel <100 µg/L NWTPH-D
Oil <500 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl 92 NWTPH-D
Toluene-dg 106 NWTPH-G
4-Bromofluorobenzene 96 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 1 of 4
a6/,pb
SPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
05/17/2012
Project: McEwan Prarie
GeoEngineers, Inc. Client ID: MW-2
1101 Fawcett Sample Matrix: Water
Suite 200 Date Sampled: 05/03/2012
Tacoma, WA 98402 Date Received: 05/04/2012
Spectra Project: 2012050155
Spectra Number: 2
Analyte Result Units Method
Diesel <100 µg/L NWTPH-D
Oil <500 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl 105 NWTPH-D
4-Bromofluorobenzene 97 NWTPH-G
Toluene-d8 103 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 2 of 4
a6/jjb
SPECTRA Laboratories
2221 Ross Way • Tacoma WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
05/17/2012
Project: McEwan Prarie
GeoEngineers, Inc. Client ID: MW-3
1101 Fawcett Sample Matrix: Water
Suite 200 Date Sampled: 05/03/2012
Tacoma, WA 98402 Date Received: 05/04/2012
Spectra Project: 2012050155
Spectra Number: 3
Anal to Result Units Method
Diesel <100 µg/L NWTPH-D
Oil <500 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl IN NWTPH-D
4-Bromolluorobenzene 100 NWTPH-G
Toluene-d8 106 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Labor tory Manager Page 3 of 4
Wijb
SPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
05/17/2012
Project: McEwan Prarie
GeoEngineers, Inc. Client ID: MW-4
1101 Fawcett Sample Matrix: Water
Suite 200 Date Sampled: 05/03/2012
Tacoma, WA 98402 Date Received: 05/04/2012
Spectra Project: 2012050155
Spectra Number: 4
AnalYte Result Units Method
Diesel <100 µg/L NWTPH-D
Oil <500 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl 101 NWTPH-D
4-Bromofluorobenzene 100 NWTPH-G
TolueneA8 106 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 4 of 4
Wjb
SPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
May 17,2012
Geo Engineers Method: NWTPH-G
1101 Fawcett Sample Matrix: Water
Suite 200 Units: ug/L
Tacoma,WA 98402 Spectra Project: 2012050155
Applies to Spectra# 1-4
HYDROCARBON ANALYSIS
QUALITY CONTROL RESULTS
DUPLICATE
Duplicate Sample# 2012050160-1
Date Analyzed: 5/7/2012
Sample Duplicate
Compound Result Result RPD
Gasoline <50 <50 0
METHOD BLANK
Date Analyzed: 5/7/2012
WTPH-G <50
Surrogate Recoveries:
Toluene-d8 107%
BFB 102%
SPECTRA LABORATORIES
Steven G. Hibbs, Laboratory Manager
JLECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectm-lab.com
May 17, 2012
Geo Engineers, Inc. Method: NWTPH-Dx
1101 Fawcett Sample Matrix: Water
Suite 200 Spectra Project: 20'12050155
Tacoma, WA 98402 Applies to Spectra#: 1
HYDROCARBON ANALYSIS
QUALITY CONTROL RESULTS
MS/MSD
Spiked Sample: Method Blank Date Extracted: 5/7/2012
Units: ug/L Date Analyzed: 5/8/2012
Dup.
Spike Spike Spike
Sample Amount Amount Percent Amount Percent %
Compound Result Added Found Recovery Found Recovery RPD
Diesel 0 2500 2180 87 2440 98 11
METHOD BLANK
Date Extracted: 5/9/2012 Date Analyzed: 5/16/2012
Units: ug/L
WTPH-D <100
Heavy Oils <500
Surrogate Recoveries:
p-terpbenyl 49%
SPECTRA LABORATORIES
Steven G. Hibbs, Laboratory Manager
CHAIN of CUSTODY
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JLECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
10/23/2012
Project: McEwan Prairie
Client ID: MW-1
Miles Sand and Gravel Sample Matrix: Water
P.O. Box 130 Date Sampled: 10/16/2012
Auburn, WA 98071-0130 Date Received: 10/17/2012
Spectra Project: 2012100433
Spectra Number: 1
Analyte Result Units Method
Diesel <110 µg/L NWTPH-D
Oil <550 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl 103 NWTPH-D
Toluene-d8 113 NWTPH-G
4-Bromofluorobe=ene 128 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 1 of 4
W jb
SPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
10/23/2012
Project: McEwan Prairie
Client ID: MW-2
Miles Sand and Gravel Sample Matrix: Water
P.O. Box 130 Date Sampled: 10/16/2012
Auburn, WA 98071-0130 Date Received: 10/17/2012
Spectra Project: 2012100433
Spectra Number: 2
Analyte Result Units Method
Diesel <105 µg/L NWTPH-D
Oil <525 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terphenyl 96 NWTPH-D
4-Bromofluorobenzene 124 NWTPH-G
Toluene-d8 116 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 2 of 4
a6/jjb
JLECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
10/23/2012
Project: McEwan Prairie
Client ID: MW-3
Miles Sand and Gravel Sample Matrix: Water
P.O. Box 130 Date Sampled: 10/16/2012
Auburn, WA 98071-0130 Date Received: 10/17/2012
Spectra Project: 2012100433
Spectra Number: 3
AnalYte Result Units Method
Diesel <105 µg/L NWTPH-D
Oil <525 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Terpbenyl 90 NWTPH-D
4-Bromofluorobenzene 126 NWTPH-G
Toluene-d8 113 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 3 of 4
a6/ijb
--,k—SPECTRA Laboratories
2221 Ross Way • Tacoma,WA 98421 • (253)272-4850 • Fax(253)572-9838 • www.spectra-lab.com
10/23/2012
Project: McEwan Prairie
Client ID: MW-4
Miles Sand and Gravel Sample Matrix: Water
P.O. Box 130 Date Sampled: 10/16/2012
Auburn, WA 98071-0130 Date Received: 10/17/2012
Spectra Project: 2012100433
Spectra Number: 4
Analyte Result Units Method
Diesel <105 µg/L NWTPH-D
Oil <510 µg/L NWTPH-D
Gasoline <50 µg/L NWTPH-G
Surrogate Recovery Method
p-Tecphenyl 100 NWTPH-D
4-Bromotluorobenzene 123 NWTPH-G
Toluene-d8 118 NWTPH-G
SPECTRA LABORATORIES
Steve Hibbs, Laboratory Manager Page 4 of 4
a6/jjb
CHAIN of CUSTODY
SPECTRA Laboratories -7 , � � PAGE_ of
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222] .RossWay • Tacom,,, WA 98421 * (253) 2724850 • Fax (253) 572-9838 • www.specti-a-lab.com STANDARD � '-RUSH
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PROJECT: HYDROCARBONS ORGANICS METALS OTHER
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