2022-01-25_REPORT - M1983194 - Laserfiche WebLink

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A brief discussion of sampling protocol and QA/QC follows; complete details may be found in the NS Sampling Analysis Plan. 5.6 Sampling and Analysis Components of sampling and analysis include: • Field Measurements • Sample Collection Procedures • Laboratory Analyses • Reporting • QA/QC methodology will be implemented for all Sampling and Analysis procedures 5.6.1 Field Measurements Prior to collection of the groundwater parameters or samples, information regarding the monitor well and previous sampling events will be recorded in a permanently bound notebook. Once a groundwater monitor well has been located and properly identified, field measurements will be recorded in the bound field notebook and in the field data sheet(s). Groundwater monitoring well sampling procedures will include: • Water level • Low flow purging of stagnant water • Field measurements of:temperature, pH and conductivity • Collection of laboratory samples • Data record generation 5.6.2 Laboratory Analysis Analyses shall be performed by a certified laboratory. All laboratory analysis must meet the following criteria: • The most sensitive analytical method specified or approved in either 40 CFR 136.3 or SW•846 must be used. Regulatory agencies will approve the analytical method, as necessary. • Each parameter shall have detection at or below the permit limits or the method detection limit as defined in the analytical method. The facility is considered in compliance if the reported results are less than the established permit limit. 5.7 QA/QC Water Samples Field Quality Control is a part of the overall project Quality Assurance/Quality Control (QA/QC) program and in accordance with the NS SAP. QC samples are those samples prepared in the field or prior to field work for the purpose of accounting for the reliability of field procedures, Daub&Associates, Inc. Page 23 Natural Soda LLC 2022 EMP