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Source: https://www.epa.gov/npdes/construction-general-permit-resources-tools-and-templates

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Construction General Permit Resources, Tools, and Templates

Construction Stormwater Permitting Topics * Overview * 2022 CGP * Lands of Exclusive Federal Jurisdiction * Threatened and Endangered Species * Turbidity Benchmark Monitoring (Dewatering) * Getting Permit Coverage / NeT CGP Waivers * Submitting CGP Forms * CGP Inspector Training * Resources, Tools, and Templates * Report Non-Compliance or Violations

On this page: * Tools and Maps * SWPPP Templates * Determine 2-Year, 24-Hour Storm Event for Sediment Basin Design * Inspection and Corrective Action Report Templates and Other Guidance * Monitoring and Inspection Guide for Construction Dewatering * Professional Resources


EPA's Permit Mapping Tools

These resources help you determine whether you discharge to an impaired water and if your construction activities will occur during a seasonally dry period in an arid or semi-arid climate. * Discharge Mapping Tool
Helps identify whether any receiving waters to which you discharge are listed as impaired (and the pollutant for which it is impaired) and whether an approved total maximum daily load (TMDL) exists for that waterbody. * Seasonally Dry Period for Arid and Semi-Arid Areas * (3.76 MB) - This tool helps you determine if your site is in an arid or semi-arid climate and the seasonally dry months for your site location. To use the tool, download the Excel file and enter your site’s zip code. The tool will return text indicating if your site is located in an arid or semi-arid climate and, if applicable, the seasonally dry months for your site. * (1.08 MB) - These maps show areas of the U.S. that have an arid or semi-arid climate and the months that those areas are considered seasonally dry.


SWPPP Templates

How to develop a Stormwater Pollution Prevention Plan (SWPPP)

These resources help operators develop effective SWPPPs that are required under construction stormwater permits. Note that construction site SWPPPs must follow the requirements of the applicable State or EPA CGP and must describe the specific conditions of the site and plans for development. * (327.22 KB) - Helps construction site operators develop a SWPPP that is compliant with the minimum requirements of EPA’s 2022 CGP. * (309.33 KB) - Ayuda a los operadores de proyectos de construcción a desarrollar un PPCAP que cumpla con los requisitos mínimos del Permiso General de Construcción 2017 de la EPA. * (9.14 MB) - Helps small residential lot builders develop a streamlined SWPPP that is compliant with the minimum requirements of EPA's 2022 CGP. * (3.42 MB) - An educational brochure that provides basic erosion and sediment control and stormwater pollution prevention guidance common to all small residential lot projects.


Determine 2-Year, 24-Hour Storm Event for Sediment Basin Design

Part 2.2.12 of EPA’s 2022 CGP indicates that if you install a sediment basin, one of the two alternative design requirements is to provide storage for the calculated volume of runoff from a 2-year, 24-hour storm. * (382.32 KB) - EPA compiled this information to help determine the volume of precipitation associated with the local 2-year, 24-hour storm event.


Inspection and Corrective Action Report Templates and Other Guidance

EPA developed the following templates to help you document your findings for site inspections, dewatering inspections, and corrective actions as required by the 2022 CGP. These templates are formatted to be filled out electronically or manually and include text fields that direct you to populate the forms with your site-specific information. * (91.85 KB) - This inspection report template is designed to assist you in preparing inspection reports that meet the requirements in Part 4.7 of the 2022 CGP. * (64.37 KB) - This dewatering inspection report template is designed to assist you in preparing inspection reports related to dewatering activities required by Part 4.6.3 of the 2022 CGP. * (53.29 KB) - This corrective action log form is designed to assist you in recording the required corrective action documentation that meet the requirements in Part 5.4 of the 2022 CGP. * (139.56 KB) - This guidance will assist you in determining whether problems found on the construction site related to stormwater controls require routine maintenance or corrective action.


Monitoring and Inspection Guide for Construction Dewatering


Tiered Waters

EPA’s CGP has special requirements for discharges to waters that receive Tier 2, Tier 2.5, or Tier 3 protections for antidegradation purposes. * (218.83 KB) - This list is provided as a resource for operators covered by the CGP to determine whether they discharge to a Tier 2, Tier 2.5, or Tier 3 water.


Professional Resources

National Pollutant Discharge Elimination System (NPDES)

Open Sidenav Menu Close Sidenav Menu Contact Us About NPDES Contact Us About NPDES to ask a question, provide feedback, or report a problem. Last updated on March 25, 2026 Welcome! Please share your feedback on how we can make www.epa.gov work better for you. A red asterisk (*) indicates a required field.

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