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It specifies scope, applicability, method overview, key definitions and acronyms, health and safety warnings, and cautions/interferences. The SOP details personnel qualifications and responsibilities, required equipment and supplies, reagents and standards, and step-by-step audit procedures including calibration considerations, gas flow rate, concentration selection and stability, conducting CO/SO2/NO2 audits, post-audit actions, and uploading results to AQS.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sop-standard-operating-procedure-for-performing-flow-based-audits-in-the-national-performance-audit-program/203284/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sop-standard-operating-procedure-for-performing-flow-based-audits-in-the-national-performance-audit-program/203284.png","ImageObject",300,407,{"name":92,"@type":93},"Aria Callaghan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-06","2026-09-04",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of this SOP in the NPAP program?","Question",{"text":112,"@type":113},"It provides the standardized procedure for performing flow-based audits within the National Performance Audit Program, including method steps and requirements for QA/QC field execution.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What sections must be reviewed before conducting an audit?",{"text":117,"@type":113},"Review scope and applicability, the method summary, definitions/acronyms, health and safety warnings, and cautions/interferences, along with personnel qualifications and responsibilities.",{"name":119,"@type":110,"acceptedAnswer":120},"What procedures are covered for completing a flow-based audit?",{"text":121,"@type":113},"The SOP covers general audit considerations, audit test gas flow rate, concentration selection and stability, conducting the FBA (including delivery line conditioning and audit point communications), post-audit steps, and issuing the audit report.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},203284,1790466585,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},962084926284,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","| | U.S. Environmental Protection Agency (EPA)\u003Cbr>Office of Air and Radiation (OAR)\u003Cbr>Office of State Air Partnerships (OSAP)\u003Cbr>Air Quality Assessment Division\u003Cbr>Air Monitoring Technology Branch |  |\n| --- | --- | --- |\n| STANDARD OPERATING PROCEDURE (SOP) |  |  |\n| SOP Title: Standard Operating Procedure for Performing Flow-Based Audits in the National Performance Audit Program |  |  |\n| SOP ID: OAR-OSAP-AQAD-AMTB-SOP-6035-0 |  | Effective Date: 2025-11-26 |\n| SOP Discipline: Field |  | Subdiscipline: QA/QC |\n| SOP Contact Signature |  |  |\n| Name: Brannon Seay\u003Cbr>Title: Physical Scientist, Air Monitoring Technology Branch\u003Cbr>Signature/Date: BRANNON SEAY DSDEaigAt:ally20i5g1n1e.d26by11B:R3A7:N4N8-ON05'00' |  |  |\n| Management Signature |  |  |\n| Name: Corey Mocka\u003Cbr>Title: Branch Manager, Air Monitoring Technology Branch\u003Cbr>Signature/Date: COREY MOCKA DDigat:ally20i5g1n1e.d26by14C:O29R:E3Y9-M0O5'C0K0'A |  |  |\n| QA Signature |  |  |\n| Name: Wendy Trunch\u003Cbr>Title: Quality Assurance Manager, OSAP Signature/Date: WENDY TRUNCH\u003Cbr>Digitally signed by WENDY TRUNCH\u003Cbr>Date: 2025.12.01 09:14:12-05'00'\u003Cbr>|  |  |\n\nDisclaimer: This SOP is a document intended for use by or for the OSAP. Any modification of or deviation from this SOP is documented according to Agency policy. Mention of brand names or vendors does not constitute an endorsement of products or services by the U.S. EPA. SOPs will be made internally accessible via the QA Track site upon final approval.  \nRevision History  \n\n| Revision\u003Cbr>No. | Author | Date of Revision | Description of Change(s) |\n| --- | --- | --- | --- |\n| 0 | Brannon Seay | 2025-11-26 | Initial Draft |\n|  |  |  |  |\n|  |  |  |  |\n|  |  |  |  |\n\nTABLE OF CONTENTS  \n1. Scope and Applicability ..................................................................................................................8  \n2. Summary of Method......................................................................................................................9  \n3. Definitions/Acronyms ..................................................................................................................10  \n4. Health and Safety Warnings .........................................................................................................11  \n5. Cautions/Interferences ................................................................................................................12  \n6. Personnel Qualifications/Responsibilities .....................................................................................13  \n7. Equipment and Supplies...............................................................................................................14  \n7.1. General Equipment Needs ............................................................................................................... 14  \n7.2. Equipment Configuration and Construction .................................................................................... 18  \n7.3. Gas Calibrator Custom Configuration .............................................................................................. 19  \n8. Reagents and Standards...............................................................................................................22  \n9. Procedures ..................................................................................................................................22  \n9.1. General Audit Considerations .......................................................................................................... 22  \n9.2. Audit Test Gas Flow Rate ................................................................................................................. 23  \n9.3. Audit Concentrations Selection........................................................................................................ 24  \n9.4. Concentration Stability.................................................................................................................","cbCaiqhjaLrros2s","https://ap.wps.com/l/cbCaiqhjaLrros2s","pdf",3508725,78,"English","# Scope and Applicability\n# Summary of Method\n# Definitions/Acronyms\n# Health and Safety Warnings\n# Cautions/Interferences\n# Personnel Qualifications/Responsibilities\n# Equipment and Supplies\n## General Equipment Needs\n## Equipment Configuration and Construction\n## Gas Calibrator Custom Configuration\n# Reagents and Standards\n# Procedures\n## General Audit Considerations\n## Audit Test Gas Flow Rate\n## Audit Concentrations Selection\n## Concentration Stability\n## Conducting the FBA\n## Uploading FBA Results to AQS\n# Data and Records Management","[{\"question\":\"What is the purpose of this SOP in the NPAP program?\",\"answer\":\"It provides the standardized procedure for performing flow-based audits within the National Performance Audit Program, including method steps and requirements for QA/QC field execution.\"},{\"question\":\"What sections must be reviewed before conducting an audit?\",\"answer\":\"Review scope and applicability, the method summary, definitions/acronyms, health and safety warnings, and cautions/interferences, along with personnel qualifications and responsibilities.\"},{\"question\":\"What procedures are covered for completing a flow-based audit?\",\"answer\":\"The SOP covers general audit considerations, audit test gas flow rate, concentration selection and stability, conducting the FBA (including delivery line conditioning and audit point communications), post-audit steps, and issuing the audit report.\"}]","SOP - Standard Operating Procedure for Performing Flow-Based Audits in the National Performance Audit Program | PDF",1788558841,197]