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The report explains the WBS model overview, including model structure, the WBS approach, and how input and output sheets are organized and used. It details general cost assumptions such as building, residuals management, indirect capital, add-on, and annual O&M costs. It also defines components for biological treatment, bioreactor constraints, chemicals, biomass control, and system elements, with appendices covering valves, instrumentation, and construction cost assumptions.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/work-breakdown-structure-based-cost-model-for-biological-drinking-water-treatment-epa-office-of-water-report/241659/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/work-breakdown-structure-based-cost-model-for-biological-drinking-water-treatment-epa-office-of-water-report/241659.png","ImageObject",442,249,{"name":88,"@type":89},"River Wang","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-11","2026-09-12",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What is the purpose of the WBS-based cost model in the report?","Question",{"text":108,"@type":109},"The model provides a structured way to estimate costs for biological drinking water treatment using a work breakdown structure approach, organizing inputs and outputs through dedicated sheets.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"How are inputs and outputs handled in the model?",{"text":113,"@type":109},"The report describes the input sheet structure and use, along with common inputs, and outlines how the output sheet structure and use generate cost results.",{"name":115,"@type":106,"acceptedAnswer":116},"Which cost categories are covered under general cost assumptions?",{"text":117,"@type":109},"General assumptions include building costs, residuals management costs, indirect capital costs, add-on costs, annual O&M costs, and methods for calculating and updating total annualized cost.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},241659,1791735685,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":20,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},1099514067438,"https://ap-avatar.wpscdn.com/avatar/100002539ee87300030?x-image-process=image/resize,m_fixed,w_180,h_180&k=1780474512215547542","United States  \nEnvironmental Protection  \nAgency  \nWork Breakdown Structure-Based Cost Model for Biological Drinking Water Treatment  \nOffice of Water (4607M) EPA *** - * - *****  \nTable of Contents  \n1. Introduction............................................................................................................................... 1  \n1.1 Background ...................................................................................................................... 1  \n1.2 Objectives ......................................................................................................................... 1  \n1.3 Organization of the Report ............................................................................................... 2  \n1.4 List of Abbreviations and Symbols in this Chapter ......................................................... 2  \n1.5 References ........................................................................................................................ 2  \n2. WBS Model Overview .............................................................................................................. 3  \n2.1 Model Structure ................................................................................................................ 3  \n2.2 The WBS Approach ......................................................................................................... 8  \n2.3 Model Use ...................................................................................................................... 10  \n2.3.1 Input Sheet Structure and Use................................................................................. 10  \n2.3.2 Common Inputs....................................................................................................... 13  \n2.3.3 Input Sheet Examples ............................................................................................. 16  \n2.3.4 Output Sheet Structure and Use .............................................................................. 18  \n2.3.5 Critical Design Assumptions Sheet Structure and Use ........................................... 18  \n2.3.6 Index Sheet Structure and Use ................................................................................ 21  \n2.4 General Cost Assumptions ............................................................................................. 22  \n2.4.1 Building Costs......................................................................................................... 24  \n2.4.2 Residuals Management Costs ................................................................................. 24  \n2.4.3 Indirect Capital Costs.............................................................................................. 25  \n2.4.4 Add-on Costs .......................................................................................................... 26  \n2.4.5 Annual O&M Costs ................................................................................................ 27  \n2.4.6 Total Annualized Cost ............................................................................................ 28  \n2.4.7 Updating and Adjusting Costs ................................................................................ 28  \n2.5 List of Abbreviations and Symbols in this Chapter ....................................................... 29  \n2.6 References ...................................................................................................................... 29  \n3. Biological Treatment Model................................................................................................... 31  \n3.1 Overview of the Biological Treatment Process.............................................................. 31  \n3.2 Input Sheet...................................................................................................................... 34  \n3.3 Model Assumptions Sheets ..................................","cbCaiqS8s3JQFbZQ","https://ap.wps.com/l/cbCaiqS8s3JQFbZQ","pdf",5030735,118,"English","# Introduction\n## Background\n## Objectives\n## Organization of the Report\n## List of Abbreviations and Symbols in this Chapter\n## References\n# WBS Model Overview\n## Model Structure\n## The WBS Approach\n## Model Use\n## General Cost Assumptions\n## Building Costs\n## Residuals Management Costs\n## Indirect Capital Costs\n## Add-on Costs\n## Annual O&M Costs\n## Total Annualized Cost\n## Updating and Adjusting Costs\n## List of Abbreviations and Symbols in this Chapter\n## References\n# Biological Treatment Model\n## Overview of the Biological Treatment Process\n## Input Sheet\n## Model Assumptions Sheets\n## Bioreactor Constraints Sheet\n## Chemicals Sheet\n## Biomass Control Sheet\n## Post-Treatment Sheet\n## Pumps, Pipe and Structure Sheet\n## Instrumentation and Control Sheet\n## Residuals Management Sheet\n## O&M and HVAC Sheets\n## Indirect Sheet\n## Output Sheet\n## Ancillary Model Components\n## List of Abbreviations and Symbols in this Chapter\n## References\n# Appendix A. Valves, Instrumentation and System Controls\n# Appendix B. Building Construction Costs","[{\"question\":\"What is the purpose of the WBS-based cost model in the report?\",\"answer\":\"The model provides a structured way to estimate costs for biological drinking water treatment using a work breakdown structure approach, organizing inputs and outputs through dedicated sheets.\"},{\"question\":\"How are inputs and outputs handled in the model?\",\"answer\":\"The report describes the input sheet structure and use, along with common inputs, and outlines how the output sheet structure and use generate cost results.\"},{\"question\":\"Which cost categories are covered under general cost assumptions?\",\"answer\":\"General assumptions include building costs, residuals management costs, indirect capital costs, add-on costs, annual O\\u0026M costs, and methods for calculating and updating total annualized cost.\"}]","Work Breakdown Structure-Based Cost Model for Biological Drinking Water Treatment - EPA Office of Water Report | PDF",1789178631,41]