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

i
9.2 For each analyte of interest, pre— to improve the separations or lower the 10.4 The laboratory should develop
pare calibration standards at a minimum cost of measurements. Each time such and maintain separate accuracy
of three concentration levels and a modifications to the method are made, statements of laboratory performance
blank by adding accurately measured the analyst is required to repeat the for each matrix being analyzed by the
volumes of one or more stock standards procedure in Section 10.2. laboratory. An accuracy statement for
(7.5)to a volumetric flask and diluting to the method is defined as R±s. The
volume with reagent water. If a sample 10.1.2 The laboratory should fortify and accuracy statement should be devel-
analyte concentration exceeds the analyze a minimum of 10%of all oped by the analyses of four aliquots of
calibration range the sample may be samples to monitor continuing labora- water or wastewater, as described in
diluted to fall within the range. If this is tory performance. A minimum of 10%of Section 10.2.2, followed by the calcula-
not possible then three new calibration all samples should be run in duplicate. tion of R and s.
concentrations must be chosen, two of
which must bracket the concentration of 10.2 Before performing any analyses, 10.5 Before processing any samples,
the sample analyte of interest. Each the analyst should demonstrate the the analyst must demonstrate through
attenuation range of the instrument ability to generate acceptable accuracy the analysis of an aliquot of reagent
used to analyze a sample must be and precision with this method, using a water that all glassware and reagent
calibrated individually. laboratory performance standard. interferences are under control. Each
time there is a change in reagents, a
9.3 Using injections of 0.1 to 1.0 mL 10.2.1 Select a representative check laboratory reagent blank must be
(determined by injection loop volume)of concentration for each analyte to be processed as a safeguard against
each calibration standard, tabulate peak measured. Using stock standards, laboratory contamination.
height or area responses against the prepare a laboratory performance check
concentration. The results are used to sample concentrate in reagent water 10.6 It is recommended that the
prepare a calibration curve for each 100 times more concentrated than the laboratory adopt additional quality
analyte. During this procedure, reten- selected concentrations. assurance practices for use with this
tion times must be recorded. method. The specific practices that are
10.2.2 Using a pipet, add 1.00 mL of most productive depend upon the
9.4 The calibration curve must be the check sample concentrate (10.2.1) needs of the laboratory and the nature
verified on each working day, or to each of a minimum of four 100-mL of the samples. Field duplicates may be
whenever the anion eluent is changed, aliquots of reagent water. Analyze the analyzed to monitor the precision of the
and after every 20 samples. If the aliquots according to the procedure in sampling technique. When doubt exists
response or retention time for any Section 11. over the identification of a peak in the
analyte varies from the expected values chromatogram, confirmatory techniques
by more than t10%, the test must be 10.2.3 Calculate the average percent such as sample dilution and fortification,
repeated, using fresh calibration recovery, (R), and the standard must be used. Whenever possible, the
standards. If the results are still more deviation(s)of the percent recovery, for laboratory should perform analysis of
than f10%, a new calibration curve the results. quality control check samples and
must be prepared for that analyte. participate in relevant performance
10.2.4 Using the appropriate data from evaluation sample studies.
9.5 Non-linear response can result Table 2,determine the recovery and
when the separator column capacity is single operator precision expected for 10.7 In order to verify that standards
exceeded (overloading). The response the method, and compare these results have been prepared correctly a
of the detector to the sample when to the values calculated in Section reference standard check should be
diluted 1:1, and when not diluted, 10.2.3. If the data are not comparable performed using a standard of known
should be compared. If the calculated within control limits(10.3.1), review concentration prepared by an independ-
responses are the same, samples of potential problem areas and repeat the ent source.
this total anionic concentration need not test.
be diluted. 10.8 With each batch of samples
10.3 The analyst must calculate processed analyze a single laboratory
10. Quality Control method performance criteria and define fortified blank containing each analyte
the performance of the laboratory for of concern at a concentration at or near
10.1 Each laboratory using this method each fortified concentration of analyte those used in the reagent water data in
should have a formal quality control being measured. Tables 2A or 2B. If more than 20
program. The minimum requirements of samples are run in a batch analyze one
this program consist of an initial 10.3.1 Calculate upper and lower LFB for every 20 samples. Evaluate the
demonstration of laboratory capability control limits for method performance accuracy by compairing to Tables 2A of
(10.2)and the analysis of fortified as follows: 2B. If acceptable data cannot be
samples as a continuing check on obtained, locate the problem and
performance. The laboratory should Upper Control Limit(UCL) = R +3 s correct it.
maintain performance records to define Lower Control Limit(LCL) = R -3 s
and document the quality of data that 10.9 At least quarterly, replicates of
are generated. where R and s are calculated as in LFBs should be analyzed to determine
Section 10.2.3. The UCL and LCL can the precision of the laboratory measure-
10.1.1 In recognition of the rapid be used to construct control charts that ments. Add these results to the on-
advances occurring in chromatography, are useful in observing trends in going control charts to document data
the analyst is permitted certain options performance. quality.