[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"permit-18":3},{"id":4,"acreageLimit":5,"changesFrom2021":6,"code":7,"commonProjects":8,"effectiveDate":14,"environmentalReview":15,"extension":16,"faq":17,"keyConditions":33,"linearFootLimit":40,"meta":41,"name":45,"pcnTrigger":71,"publicComments":52,"purpose":51,"relatedPermits":72,"seo":73,"shortName":46,"sourceDocumentUrl":69,"statutoryAuthority":47,"stem":74,"whoNeedsThis":53,"__hash__":75},"permits/permits/nwp-18.json",0.1,"The 2026 reissuance of NWP 18 did not include any substantive changes to the permit's national terms, volume limits, or acreage thresholds compared to the 2021 version. The Corps reevaluated the permit's individual and cumulative effects and determined that the existing limits remain sufficient to ensure only minimal adverse environmental impacts.\n\nWhile the regulatory text remains unchanged, the supporting decision document was updated with the most recent environmental baseline data. This includes results from newer national assessments like the 2022 National Lakes Assessment and the 2021 National Wetland Condition Assessment to ensure the cumulative impact analysis is grounded in current data.","18",[9,10,11,12,13],"Small grading or leveling of a project site","Minor incidental fill for shoreline stabilization","Small-scale utility line supports or miscellaneous fills","Minor landscaping tasks involving jurisdictional waters","Incidental discharge from small repairs of authorized structures","2026-03-15","The Corps determined that reissuing NWP 18 has 'no effect' on federally-listed endangered or threatened species or their critical habitat. This finding is based on General Condition 18, which requires project-specific ESA Section 7 consultation for any activity that 'might affect' listed resources; no activity is authorized until that process is complete.\n\nCompliance with Section 106 of the National Historic Preservation Act is maintained through General Condition 20, which triggers a mandatory pre-construction notification if an activity has the potential to affect historic properties. For Essential Fish Habitat, the Corps found that district engineers can apply regional or activity-specific conditions to ensure impacts remain no more than minimal.","json",[18,21,24,27,30],{"q":19,"a":20},"What is the cubic yard limit for minor discharges under NWP 18?","The quantity of dredged or fill material discharged into waters of the United States cannot exceed 25 cubic yards.",{"q":22,"a":23},"When is a PCN required for NWP 18?","A PCN is mandatory if the discharge results in the loss of more than 1/10-acre of waters of the U.S. or if specific regional or general conditions (like endangered species) are triggered.",{"q":25,"a":26},"Can I use NWP 18 for projects in wetlands?","Yes, it authorizes minor discharges in all waters of the U.S., including wetlands, provided the total loss remains under 1/10-acre and the volume is under 25 cubic yards.",{"q":28,"a":29},"Does NWP 18 allow for stream channelization?","No, this permit specifically does not authorize discharges for the purpose of stream channelization or relocation.",{"q":31,"a":32},"What happens if my discharge is more than 25 cubic yards?","If the project exceeds the 25 cubic yard limit, it cannot be authorized under NWP 18 and will likely require an individual permit or a different nationwide permit.",[34,35,36,37,38,39],"Discharge quantity cannot exceed 25 cubic yards","Total loss of waters cannot exceed 1/10-acre","Cannot be used for stream diversion or channelization","Pre-construction notification is required if discharge exceeds 10 cubic yards in certain areas","Material must be free from toxic pollutants in toxic amounts","Temporary fills must be removed and site restored to original elevations",null,{"path":42,"body":43,"title":70},"/permits/nwp-18",{"id":44,"code":7,"name":45,"shortName":46,"statutoryAuthority":47,"acreageLimit":5,"linearFootLimit":40,"pcnTrigger":48,"effectiveDate":14,"purpose":51,"changesFrom2021":6,"environmentalReview":15,"publicComments":52,"whoNeedsThis":53,"commonProjects":54,"keyConditions":55,"faq":56,"relatedPermits":62,"seo":66,"sourceDocumentUrl":69},"nwp-18","Minor Discharges","NWP 18","10/404",{"type":49,"value":5,"unit":50},"threshold","acre","Nationwide Permit 18 authorizes minor discharges of dredged or fill material into all waters of the United States. This permit is intended for small-scale projects where the total quantity of discharge does not exceed 25 cubic yards and the resulting loss of waters remains very low.\n\nThe scope of this permit covers both Section 404 Clean Water Act activities and Section 10 Rivers and Harbors Act work. It is often used for miscellaneous minor fill activities that do not fall under more specific nationwide permits, provided they meet the strict volume and acreage constraints.","During the reissuance process, commenters generally supported maintaining the streamlined nature of NWP 18. Some commenters suggested raising the cubic yard limit to facilitate slightly larger minor projects, while others advocated for more restrictive acreage limits to prevent cumulative losses.\n\nThe Corps responded by retaining the existing 25 cubic yard and 1/10-acre limits. They emphasized that these thresholds are historically successful in ensuring that authorized activities cause no more than minimal individual and cumulative adverse environmental effects without creating excessive regulatory burdens.","Compliance managers, private landowners, and small-scale contractors typically use this permit for miscellaneous minor fill activities. It is ideal for industries and individuals needing to perform minor grading, small repairs, or incidental fill tasks that do not fit into other specialized permits but stay within the 25 cubic yard limit.",[9,10,11,12,13],[34,35,36,37,38,39],[57,58,59,60,61],{"q":19,"a":20},{"q":22,"a":23},{"q":25,"a":26},{"q":28,"a":29},{"q":31,"a":32},[63,64,65],"NWP-3","NWP-13","NWP-19",{"title":67,"description":68},"NWP 18: Minor Discharges - 2026 Permit Guide","Nationwide Permit 18 (NWP 18) for minor discharges of fill material. 25 cubic yard limit, 1/10-acre PCN threshold, and Section 10/404 rules on Course Clear.","https://cdn.courseclear.io/usace/decision_documents/NWP-18-2026-Final-Decision-Document.pdf","Nwp 18",{"type":49,"value":5,"unit":50},[63,64,65],{"title":67,"description":68},"permits/nwp-18","kJv5HvTBgx6UYWE6rFGPg9JTlDuAW8unycMz5LCRlHs"]