Site-Specific Health and Safety Plan (HASP) - Laschools.org

• Instrument run logs;
• Initial calibration data, raw and processed;
• Continuing calibration data, raw and processed;
• Raw data for all sample runs and QC runs;
• Summary of method detection limit determination, showing the seven individual
runs, their mean, and their standard deviation, but not including their raw data; and
• Surrogate spikes recoveries.
Data qualifiers are applied to analytical results during the data usability assessment,
based on adherence to method protocols and QA/QC limits.
The validation guidelines are defined in Tables 8-1 and 8-2 and were developed in
accordance with the National Functional Guidelines for Organic Data Review (USEPA,
1994a). Expanded criteria for the data usability guidelines were developed where
professional judgment is recommended within the USEPA guidelines. QC guidelines are
those specified in the analytical method protocols.
8.3.2 Data Reporting Qualifiers
The following definitions provide explanations of the USEPA (1994a) qualifiers to be
assigned to analytical results during data validation, as defined in Table 8-1. The data
qualifiers described are applied to organic results.
Qualifier Description
The analyte was analyzed for and is not present above the reported sample
U
quantitation limit.
J The analyte was analyzed for and was positively identified, but the
associated numerical value may not be consistent with the amount actually
present in the environmental sample. The data should be considered as a
basis for decision making and are usable for many purposes.
R The data are rejected as unusable for all purposes. The analyte was
analyzed for, but the presence or absence of the analyte was not verified.
Resampling and reanalysis are necessary to confirm the presence or
absence of the analyte.
UJ The analyte analyzed for was not present above the reported sample
quantitation limit. The associated numerical value may not accurately or
precisely represent the concentration necessary to detect the analyte in the
sample.
8.3.3 Assessment of Usability
Data usability will be assessed by the project chemist based on validation results to
determine the project PARCCs. The project chemist will perform data validation on at
least ten percent of the data, selected at random. In addition, targeted data validation and
evaluation will be performed on any result that appears to be unusual or outside the
expected range. Any limitations on data use will be expressed quantitatively to the extent
practicable. The outcome of this data review will be a data set appropriate to support
8-3
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