Okaloosa County BOCC — December 6, 2016 — Gap Creek QAPP — reading text

data among participating subcontractor laboratories, if applicable. Appropriate sampling and analytical methods have been selected, as described in this QAPP, which have QC acceptance limits that support the achievement of established performance criteria. 2.4.6 Sensitivity Sensitivity is defined as the ability of the method or instrument to detect the contaminant of concern and other target compounds at the level of interest. Sensitivity for this study is driven by the specified quantitation limits (QL) and detection limits (DL) for the analyses. June 2016 | 7 Gap Creek Stormwater Improvements Quality Assurance Project Plan Okaloosa County, Florida 2.5 Measurement Quality Objectives MQOs are summarized below in Table 3. Table 3. MQOs Measurement Performance Analytical Method MQO Criteria Metals 200.7/SW6020 MS/MSD recoveries 70-130% LCS recoveries 85-115% -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ -Method blanks -Equipment blanks -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Nitrate + Nitrite -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ 300.0/SW9056 -Method blanks -Equipment blanks -Laboratory Control Sample 85-115% -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Total Kjeldahl Nitrogen -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ (TKN) -Method blanks 351.2 -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Total Nitrogen -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ 300.0/351.2 -Method blanks -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries 8 |June 2016  Gap Creek Stormwater Improvements Quality Assurance Project Plan Okaloosa County, Florida Table 3. MQOs Measurement Performance Analytical Method MQO Criteria -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Ortho-Phosphate -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ 300.0/SW9056 -Method blanks -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Total Ammonia -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ (Ammonia Nitrogen) -Method blanks 350.1 -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Total Phosphorus -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ 365.4 -Method blanks -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Total Suspended Solids -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ (TSS) -Method blanks 160.2 -Equipment blanks June 2016 | 9 Gap Creek Stormwater Improvements Quality Assurance Project Plan Okaloosa County, Florida Table 3. MQOs Measurement Performance Analytical Method MQO Criteria -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Oil & Grease -Laboratory Reagent Blank (LRB) No analyte detected at ≥LOQ 1664 -Method blanks -Equipment blanks -Laboratory Control Sample Within lab control limits -MS/MSD recoveries -Field duplicate RPDs ≤ 20% RPD -MS/MSD RPDs -Lab duplicate RPDs -LCS/LCSD RPDs CCV within ± 10% of true value Completeness 90% Fecal Coliform -Laboratory Reagent Blank (LRB) SM9222D 2.6 Sampling Procedures The Nalgene samplers shall be loaded into the Sampling Kit Tube with the appropriate sample containers prior to a pending (forecasted) qualifying storm event as defined in Section 2.1. Once the storm has passed and it safe for personnel to gain access to the samplers, a grab sample will be collected. Samples shall be collected first from the inflow to the retention pond approximately 5-10 feet below the Nalgene samplers or at pool inlet, and next from water discharging from the retention pond. Grab samples will be collected using either a dipper or by hand submerging a laboratory clean – un preserved sample container to fill the appropriate, laboratory prepared sample containers for Fecal Coliform. Care must be taken not to disturb sediment or the water column upstream of the Nalgene samplers prior to collection of the samples. Once the qualifying event has been collected in the Nalgene samplers, the collected sample volume will be transferred to pre-cleaned laboratory-supplied bottles under controlled conditions from the laboratory. Any sample requiring preservation will be preserved immediately upon collection from the respective sampler. Table 4 shows sample containers, preservation method, and holding time for each parameter of interest. Equipment blanks, field duplicates and MS/DS duplicates will be collected in a similar fashion . Equipment blanks will be collected by pouring deionized water into the sampling port on one of the Nalgene samples while collecting the rinse water into a sample 10 |June 2016  Gap Creek Stormwater Improvements Quality Assurance Project Plan Okaloosa County, Florida container for analysis. Field duplicates will be collected by using the water collected in one sampler to fill the parent sample bottles, and using then water collected in the other sampler to fil the field duplicate bottles. Equipment blanks, field duplicates and MS/DS duplicates will follow the same chain of custody, field notes and shipping requirements as the stormwater samples. The Nalgene samplers will be cleaned or replaced as appropriate after sample collection. Additional details concerning sampling and cleaning procedures can be found in Appendix B (Standard Operating Procedures for Field Sampling Activities; Excerpts from Florida’s DEP – SOP-001/01. Table 4. Sample Containers and Holding Times Holding Parameter Matrix Container Preservation Time 250 milliliter (mL) plastic pH ≤ 2 with (1+1) nitric acid (HNO3), Total Metals Water 6 months bottle 4 degrees centigrade (°C) Ortho-Phosphate 125