{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/50930"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/50930","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Leveraging Technology to Add Value to a Phase II NPDES Permit","abstract":"In 1999, Phase II of the National Pollutant Discharge Elimination System engaged operators of small Municipal Separate Storm Sewer Systems (MS4) in the control of runoff from urban areas. The complex task of urban runoff mitigation has been investigated for several decades, resulting in a large variety of available computing and measurement tools for urban stormwater management. Unfortunately, these tools may not be available to the MS4 operator in a format that is both concise, and directly applicable. To address this need, this thesis recommends stormwater model creation and refinement strategies for Phase II MS4s using GIS and Python scripting. Further recommendations on using a popular discharge measurement technique for model calibration are provided. This workflow is then demonstrated in a watershed in Blacksburg, Virginia, where a unique MS4 permitting partnership allowed the development of these tools. Finally, further improvements to the workflow are suggested along with ideas for additional research for stormwater management in Phase II MS4s.","abstract_html":"In 1999, Phase II of the National Pollutant Discharge Elimination System engaged operators of small Municipal Separate Storm Sewer Systems (MS4) in the control of runoff from urban areas. The complex task of urban runoff mitigation has been investigated for several decades, resulting in a large variety of available computing and measurement tools for urban stormwater management. Unfortunately, these tools may not be available to the MS4 operator in a format that is both concise, and directly applicable. To address this need, this thesis recommends stormwater model creation and refinement strategies for Phase II MS4s using GIS and Python scripting. Further recommendations on using a popular discharge measurement technique for model calibration are provided. This workflow is then demonstrated in a watershed in Blacksburg, Virginia, where a unique MS4 permitting partnership allowed the development of these tools. Finally, further improvements to the workflow are suggested along with ideas for additional research for stormwater management in Phase II MS4s.","abstract_has_math":false,"creators":["Aguilar, Marcus F."],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Civil Engineering","degree_department":"Civil and Environmental Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":["Dymond, Randel L."],"committee_members":["Moglen, Glenn Emery","Young, Kevin D."],"year":2013,"date_issued":"2013-06-03","date_published":"2013-06-03","updated_at":"2026-07-22T22:19:15Z","subjects":["Stormwater","GIS","MS4","Hydrology","Programming","Urbanization"],"languages":[],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:892"],"render_values":[{"text":"vt_gsexam:892","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/50930","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Dymond, Randel L."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Moglen, Glenn Emery","Young, Kevin D."]},{"key":"dc:contributor.department","label":"Department","values":["Civil and Environmental Engineering"]},{"key":"dc:creator","label":"Author","values":["Aguilar, Marcus F."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-11-26T07:00:33Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-11-26T07:00:33Z"]},{"key":"dc:date.issued","label":"Date","values":["2013-06-03"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Stormwater","GIS","MS4","Hydrology","Programming","Urbanization"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:892"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/50930"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In 1999, Phase II of the National Pollutant Discharge Elimination System engaged operators of small Municipal Separate Storm Sewer Systems (MS4) in the control of runoff from urban areas. 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