Construction Services, Stormwater Project

Jefferson County Stormwater and SWPPP Plan Review

  • Jefferson County, MO
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Project Description

Stormwater and SWPPP Plan Review – Jefferson County, MO

This project illustrates I&L’s MS4 Phase II Compliance and Water Quality BMP assistance capabilities, among others,  in Jefferson County, Missouri. Jefferson County MO is the St. Louis region in Missouri southern gateway, blending small-town rural charm with quick access to urban life. Rich in history yet forward-looking, Jefferson County offers a balanced crossroads of history, industry, natural beauty, and steady growth in Missouri.

Jefferson County retained I&L to perform Storm Water Regulation and Storm Water Pollution Prevention Plan (SWPPP) compliance reviews for development projects submitted throughout Jefferson County, Missouri. To date I&L has completed over 70 plan reviews for the County to confirm the engineer designs are in compliance with County ordinances. I&L coordinates review comments with the design engineers of record until the plan submittals meet the County requirements prior to the County issuing land disturbance permits. I&L has also assisted the County with ordinance reviews and updates to help the County meet ongoing MoDNR NPDES permit requirements.

Construction site runoff can be one of the largest point sources for pollutants and as such, NPDES permit holders are required to address this potential source of pollution in Missouri. In support of the NPDES permit requirements, Jefferson County adopted Chapter 505 Land Disturbance and Stormwater Management which establishes plan preparation requirements for sites that disturb more than 5,000 square feet in designated areas. The ordinance identifies site plan development and construction implementation requirements for proposed construction projects. Each proposed project meeting the disturbance criteria must prepare a plan for the contractor’s use during construction to ensure proper implementation of erosion and sediment control measures.

I&L reviews Owner and Contractor SWPPP documentation and maintains SWPPP records for Jefferson County, Missouri.

Inspection services include:

  • SWPPP BMP Plan Review
  • Bi-weekly on-site inspections
  • Note deficiencies and variations from the SWPPP Plan
  • Document and track action items to correct deficiencies
  • Initiate stop work orders in the event of ongoing non-compliance
  • Document activities for MS4 compliance

Project Details

Key Personnel:

  • Tim Dean, PE, LEED AP, CFM
  • Kevin Sallwasser, EI
  • Jenna Stombaugh, EI
  • Lorelei Wilson, EI
  • Kelton Back, EI
  • Seth Filipsen, EI
  • Mark Meyer, PE, CFM

Project Features:

  • Municipal Criteria & Compliance
  • SWPPP Plan Review

Year:

  • 2024-Present

Project Gallery

Elizabeth Tiedt, EI

Project Engineer, Intuition & Logic Engineering, Inc.

Education

 

Registration

EI- Project Staff

Affiliations

 

 

Danielle Laurie, EI

Project Engineer, Intuition & Logic Engineering, Inc.

Education

B.S. Architectural Engineering & Civil Engineering

University of Missouri-Rolla, 2025

Registration

EI- Project Staff

Affiliations

  • American Society of Civil Engineers
  • American Public Works Association
  • Engineers Without Borders
  • Chi Epsilon

Ms. Laurie is a Civil and Architectural Engineer with a strong foundation in civil engineering analysis and design, supported by both academic and early professional experience. She has approximately 15 months of engineering experience, with a primary focus on civil engineering applications. Ms. Laurie has hands-on experience in modeling and analysis using industry-standard tools, including AutoCAD Civil 3D, ArcGIS, and PCSWMM. She has completed formal training in PCSWMM hydraulic modeling and has applied these skills to support stormwater management and hydraulic analysis efforts. Her technical experience includes civil site layout, stormwater hydrology and hydraulic calculations, utility coordination, and preparation of construction documents. Ms. Laurie has also assisted with construction-related activities, including design inspections, pavement inspections, and concrete testing.