Design

Effective infrastructure design starts with the right team. SWIG's engineers and technical experts bring deep regulatory knowledge and hands-on field experience to every project — delivering flexible, site-specific solutions that give all stakeholders the tools they need to make confident, informed decisions.

We offer a comprehensive range of complimentary design and specification services across the full project lifecycle:

Design

• Preliminary product and system recommendations
• Hydrologic and hydraulic modeling
• Cost estimates and option analysis

Permitting

• ERP/NPDES applications and submittals

QAPP preparation

Specification

• Site-specific drawings and design documentation
• Submittal packages prepared for regulatory review
• Permit-ready specifications tailored to your project's unique requirements

From early-stage feasibility through final permit submission, SWIG is the trusted partner you can count on, whether your project involves stormwater management, public utility infrastructure, or complex environmental systems.