1993-09-24_HYDROLOGY - M1977378

• Permit No: M1977378
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/24/1993
• Doc Name: Work Plan to Perform a Tracer Test
• From: Simon Hydro- Search
• To: Sunnyside Gold Corp
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

10.10 When using Part B, the analyst weight of dry solid material taken as a 14. References
should be aware of the purity of the sample. This slurry is mixed together for
reagents used to prepare standards. ten minutes using a magnetic stirring
Allowances must be made when the device. Filter the resulting slurry before 14.1 "Determination of Inorganic
solid materials are less than 99%pure injecting using a 0.45 µ membrane type Disinfection By-Products by Ion
filter. This can be the type that attaches Chromatography",J. Pfaff, C. Brockhoff.
11. Procedure directly to the end of the syringe. Care J. Am. Water Works Assoc., Vol 82, No.
should be taken to show that good 4, pg 192•
recovery and identification of peaks is
11.1 Tables 1 A and 1 B summarize the 14.2 Standard Methods for the
obtained with the users matrix through
recommended operating conditions for the use of spikes. Examination of Water and Wastewater,
the ion chromatograph. Included in this Method 4110B, "Anions by Ion Chroma-
table are estimated retention times that tography"proposed for the supplement
can be achieved by this method. Other 12. Calculation 17th Edition of Standard Methods.
columns,chromatographic conditions,
or detectors may be used if the require- 12.1 Prepare separate calibration 14.3 Dionex, System 4000 Operation
ments of Section 10.2 are met. curves for each anion of interest by and Maintenance Manual, Dionex
plotting peak size in area, or peak Corp., Sunnyvale, California 94086.
11.2 Check system calibration daily height units of standards against 1988.
and , if required, recalibrate as de- concentration values. Compute sample
scribed in Section 9. concentration by comparing sample 14.4 Method Detection Limit (MDL)as
peak response with the standard curve. described in 'Trace Analyses for
11.3 Load and inject a fixed amount of Wastewater,"J.Glaser, D. Foerst, G.
well mixed sample. Flush injection loop 12.2 Report results in mg/L. McKee, S.Quave,W. Budde, Environ-
thoroughly, using each new sample. mental Science and Technology,Vol.
Use the same size loop for standards 12.3 Report NO2 as N 15, Number 12, page 1426, December
and samples. Record the resulting peak NO3 as N 1981.
size in area or peak height units. An
automated constant volume injection HPO,,2- as P
system may also be used.
13. Precision and Accuracy-
11.4 The width of the retention time Method Detection Limit
window used to make identifications
should be based upon measurements
of actual retention time variations of 13.1 The method detection limit (MDL)
standards over the course of a day. is defined as the minimum concentra-
Three times the standard deviation of a tion of a substance that can be meas-
retention time can be used to calculate ured and reported with 99%confidence
a suggested window size for each that the value is above zero.The MDL
analyte. However,the experience of the concentrations listed in Table 1 A and
analyst should weigh heavily in the 1 B were obtained using reagent waters.
interpretation of chromatograms.
13.2 Single operator accuracy and
11.5 If the response for the peak precision for reagent, drinking and
exceeds the working range of the surface water, and mixed domestic and
system, dilute the sample with an industrial wastewater are listed in Table
appropriate amount of reagent water 2A and 2B.
and reanalyze.
13.3 Multiple laboratory accuracy and
11.6 If the resulting chromatogram fails precision data for reagent, drinking and
to produce adequate resolution,or if waste water using method A are given
identification of specific anions is for each anion in tables 3 through 9.
questionable,fortify the sample with an Data from nineteen laboratories were
appropriate amount of standard and used for this data.
reanalyze.
13.4 Some of the bias statements, for
Note: Retention time is inversely example chloride and sulfate, may be
proportional to concentration. Nitrate misleading due to spiking small
and sulfate exhibit the greatest amount increments of the anion into large
of change, although all anions are naturally occuring concentrations of the
affected to some degree. In some same anion.
cases this peak migration may produce
poor resolution or identification.
11.7 The following extraction should be
used for solid materials.Add an amount
of reagent water equal to ten times the
300.0-5 August 1991
I