Task 1: Project Management and Planning - Develop and submit a comprehensive monitoring plan consistent with EPA Method 327, detailing sample collection, equipment calibration, QA/QC, reporting timelines, and contingency actions. - Identify and justify monitoring locations, including considerations for wind direction, proximity to sources and community risk. - Define a canister rotation strategy to enhance spatial coverage and reduce sampling bias. - Coordinate with Public Health Department staff for site access, permissions, safety, and logistics. Deliverables: - Final monitoring plan, including siting justification, schedule, and QA/QC procedures. - Project schedule, prefer Gantt chart or equivalent. - Site access and safety plan. - Communication and notification protocol. Task 2: Field Monitoring - Conduct ambient air sampling every 5 days for a minimum of 30 days (6 events). - Deploy eight (8) fused-silica lined canisters or SUMMA canisters per event positioned along the facility fenceline and/or community perimeter, plus 1 field blank, 1 duplicate, and 1 spiked sample per event; 11 total canisters. - Each sample must be collected 24-hour period following Method 327 flow control requirements. - Perform leak testing, flow verification, and documentation for each device before deployment. - Ensure proper canister placement and handling to prevent contamination. - Maintain chain-of-custody records for all samples. Deliverables: - Field sampling logs (per event). - Equipment calibration and flow verification records. - Chain-of-custody forms. - Incident and equipment maintenance logs (if applicable). Task 3: Laboratory Analysis - Use a certified laboratory for Method 327 analysis, capable of meeting the MDL requirement of <20 pptv or 1/10th of 0.2 µg/m³ (whichever is higher). - Conduct GC-MS analysis with proper analytical batch QA/QC, including continuing calibration verification, method blanks, duplicate precision, and second-source calibration verification. - Provide EtO concentration for each site and calculate "deltaC" for each event with detailed calculation process. - Ensure document of daily instrument performance and calibration logs. Deliverables: - Any data files involved in the project. - QA/QC reports (including SSCV, CCV, batch blanks, etc.) - Methodology documentation and instrument calibration logs. Task 4: Data Reporting and Communication - Submit electronic data after each event. - Submit a comprehensive final report at the end of the campaign, including EtO concentrations at each site for each event, "deltaC" for each event, averaged rolling "deltaC" for the whole project, exceedance tracking vs EPA’s action level (0.2 µg/m³), interpretation of spatial and temporal trends, root cause analysis for any exceedance and mitigation recommendations. - Archive and transmit all supporting files: raw data, QA/QC records, calibration and chain-of-custody logs. - Support communication with community stakeholders if public health concerns arise. - Assist the City in responding to any regulatory or public inquiries. Deliverables: - Event-based data reports, with concentration summaries and QA/QC results - Final comprehensive summary report, includes data interpretation, trends, exceedance documentation, root cause analysis, and recommendations regarding health risks associated with EtO exposure in community settings. - Public health communication brief (if required). - Complete electronic archive (QA/QC data, GC-MS files, calibration records, metadata).
