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Environmental Permitting

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Permitted. Approved. Built.

Permitting delays can derail even well-designed projects. One missed requirement, one agency that wasn't looped in early enough, and you're looking at months of delays and redesign costs.

We get permits approved. Our team knows what each agency needs to see and when they need to see it. We coordinate early with regulators so you're not redesigning halfway through. We write applications that answer the questions before they're asked.

Whether you need a 404 permit for stream work, coastal zone certification, or FEMA compliance for a flood project, we know the process and the people. That means fewer revisions, faster approvals, and designs that actually get built.

  • Section 404/401 Clean Water Act permitting
  • Coastal Zone Consistency (CZC) certifications
  • Erosion and Sediment Control (E&SC) permitting
  • NPDES Construction General Permit compliance
  • FEMA floodplain permitting (CLOMR/LOMR)
  • Wetland delineation and endangered species assessments
  • Environmental site assessments and impact evaluations
  • Agency coordination and public involvement support

We handle permits from the start, not after the design is done. That means identifying potential issues early, talking to the right agencies before applications go in, and writing submittals that address concerns upfront.

The result: fewer back-and-forth revisions, faster approvals, and designs that satisfy both regulatory requirements and project goals.

  • USACE Section 404/401 permitting and Nationwide/Individual permits
  • Coastal Zone Management Act compliance
  • FEMA floodplain analysis and mapping
  • Endangered species and habitat evaluations
  • Wetland delineation and mitigation planning
  • Stormwater BMP design for permit compliance
  • GIS-based environmental impact analysis

Turning Water Challenges Into Lasting Solutions

Access to safe drinking water is the cornerstone of a thriving community. At Ardurra, we combine technical excellence with innovative strategies to help clients navigate the complexities of water supply and treatment: from aging infrastructure and emerging contaminants (including PFAS and microplastic), lead and copper rules to climate change and evolving regulations. With proven expertise and a forward-thinking approach, we transform challenges into resilient, sustainable solutions that protect public health, foster economic prosperity, and ensure reliable water supplies for generations to come. 

Key Services

  • Water Treatment Plant Planning, Design, and Optimization 

  • Source Water Assessment and Development 

  • Potable Water Supply System Master Planning 

  • Water Distribution Network Design and Analysis 

  • Water Quality Monitoring and Compliance 

  • Treatment Process Upgrades and Capacity Expansion 

  • Pumping and Storage System Design 

  • SCADA and Automation Integration for Water Systems 

  • Emergency Response and Resiliency Planning 

  • Feasibility Studies and Cost-Benefit Analysis 

Potable - South Pkwy WTP

How We Deliver

We guide you through every stage—from conceptual design and master planning to construction and commissioning. Our responsive approach means we quickly understand your unique challenges and deliver innovative, cost-effective solutions tailored to your community's needs. You'll work directly with a multidisciplinary team that brings together the right expertise for your project, without unnecessary layers slowing decisions or progress. The result: seamless execution, timely delivery, and drinking water systems that keep your community safe and thriving.

Specialized Technical Expertise

  • Conventional and Advanced Water Treatment Processes (e.g., coagulation, flocculation, filtration, disinfection) 

  • Membrane Filtration (UF, MF, RO) Design and Operation 

  • Chemical Feed and Optimization for Treatment Efficiency 

  • Water Quality Modeling and Risk Assessment 

  • Corrosion Control and Distribution System Water Quality 

  • Source Water Protection and Watershed Management 

  • Regulatory Compliance and Drinking Water Standards (e.g., Safe Drinking Water Act, PFAS, CECs) 

  • Process Simulation and Hydraulic Modeling 

  • Water Reuse and Integration with Potable Supply (NPR, IPR, DPR) 

  • Energy Efficiency and Sustainability in Water Treatment 

  • Rehabilitation, Renewal, and Modernization (RRM) of Treatment Works 

Potable Water - Grapevine

River District Development

Cascade, ID

Section 404 permit for 122-acre development in North Fork Payette floodplain

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River District Development

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