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ARCHIVED REPORTS_2011_17
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ARCHIVED REPORTS_2011_17
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Last modified
7/17/2020 3:53:37 PM
Creation date
7/3/2020 10:56:05 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
4400 - Solid Waste Program
File Section
ARCHIVED REPORTS
FileName_PostFix
2011_17
RECORD_ID
PR0440005
PE
4433
FACILITY_ID
FA0004516
FACILITY_NAME
FORWARD DISPOSAL SITE
STREET_NUMBER
9999
STREET_NAME
AUSTIN
STREET_TYPE
RD
City
MANTECA
Zip
95336
APN
20106001-3, 5
CURRENT_STATUS
01
SITE_LOCATION
9999 AUSTIN RD
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
Scanner
SJGOV\rtan
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FilePath
\MIGRATIONS\SW\SW_4433_PR0440005_9999 AUSTIN_2011_17.tif
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EHD - Public
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lysimeters were checked for soil-pore liquid on May 30, 2011, and Del-Tech reported <br /> that all lysimeters were dry. Of note, lysimeters LY-EIB, LY-E2B, D-93B, WMU-DOI, <br /> WW-D02, WMU-D02 (pan), and FU-03 could not be located or have been buried, <br /> while lysimeters LY-EIA and LY-E2A were reported to be plugged. <br /> Samples were collected by Del-Tech from each sample point containing sufficient liquid <br /> and submitted to BC Laboratories(BC) of Bakersfield, California, a state certified <br /> laboratory under contract to Forward. During the second quarter 2011 monitoring period, <br /> samples were analyzed for the routine monitoring parameters stipulated in RWQCB <br /> Order No. R5-2003-0049. Table 2-1 summarizes site monitoring parameters, analytical <br /> methods, and monitoring frequency. Water quality samples were also analyzed in the <br /> field for dissolved oxygen, turbidity,temperature, specific conductance, and pH and <br /> recorded on well data sheets. The groundwater monitoring wells and leachate monitoring <br /> points were sampled in accordance with the sampling and analysis procedures detailed in <br /> Appendix B. The well data sheets, laboratory data, certificates of analyses, and chain-of- <br /> custody records for the sampling program are included in Appendix C. The laboratory <br /> analyses and field results for groundwater monitoring wells, surface water stations, <br /> lysimeter and leachate sampling stations are summarized in Tables 2-2 through 2-7. <br /> 2.1.2 QA/QC Results <br /> The quality assurance/quality control (QA/QC)program completed for the second quarter <br /> 2011 water quality monitoring event included analyses of two laboratory method blanks, <br /> and one duplicate sample. Of note, one trip blank and two field blanks were also <br /> collected during the monitoring event and are reported under the Austin Unit QA/QC <br /> results in Section ').1.2. The method blanks were analyzed for all of the analytes included <br /> in the monitoring program. The results of the QA/QC program indicate that no VOCs <br /> were detected in any of the method blank samples. During the second quarter 2011 <br /> monitoring event, a duplicate sample was collected from well W-16 and labeled DUP. <br /> As shown on Table 2-2, for quantifiable concentrations greater than the PQL, the <br /> duplicate sample analyses yielded good correlation(within 8%) with the primary sample. <br /> Review of second quarter 2011 sampling dates and laboratory analytical certificates <br /> indicates that the laboratory analyses were completed within required holding times. <br /> Based on the results of the laboratory QA/QC analyses, it is concluded that the laboratory <br /> data generated for the second quarter 2011 monitoring period are generally acceptable <br /> and the water quality samples collected from the Forward Unit appear to be <br /> representative of water quality at the site. <br /> 2.1.3 Groundwater Elevations and Contours <br /> Prior to purging and sampling, each well was sounded for water depth using a weighted <br /> electronic sounder to an accuracy of 0.01 foot, and the static water level was recorded on <br /> a Well Data Sheet(Appendix Q. The groundwater elevations were calculated for each <br /> well by subtracting the depth-to-water measurement from the top-of-casing reference <br /> elevation. The current and historical groundwater elevation data for the Forward Unit is <br /> summarized in Table 2-3. <br /> D:\2011_0050\FA 2QII.docx <br /> 4 GeoLogic Associates <br />
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