Project Manager – Stormwater and Water Resources

## Overview Do you want to build an impactful career to change the world for the better? Geosyntec has an exciting opportunity for a **Project Manager – Stormwater and Water Resources** based in our **Costa Mesa, California** office. This role will lead and contribute to public- and private-sector projects involving stormwater and non-stormwater regulatory compliance, Water Quality Management Plans (WQMPs), Best Management Practice (BMP) planning and design, Low Impact Development (LID) strategies, hydrologic and hydrogeologic evaluations, and Clean Water Act/NPDES regulatory support. Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Our clients ask us to address their new ventures and most challenging problems involving the environment, natural resources, and civil infrastructure. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service. We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well-being programs to support you and your family. To Learn More Visit: http://www.geosyntec.com/careers/. ## Essential Duties and Responsibilities - Manage and support stormwater/MS4 permit compliance, water quality planning, and BMP design projects for municipal, public agency, developer, and private-sector clients, with emphasis on Orange County and Southern California regulatory programs. - Provide technical and regulatory support for NPDES/MS4 permit compliance, municipal stormwater program implementation, industrial/commercial inspection programs, annual reporting, program effectiveness assessments, and construction stormwater compliance. - Prepare, review, and implement Water Quality Management Plans (WQMPs), Stormwater Management Plans (SWMPs), Stormwater Pollution Prevention Plans (SWPPPs), stormwater compliance plans, hydromodification analyses, runoff calculations, and related regulatory submittals. - Lead or support the planning, siting, sizing, and design of site design, source control, treatment control, infiltration, and drywell BMPs consistent with Orange County BMP Design Manual requirements, local implementation plans, and applicable regional MS4 permit criteria. - Evaluate site-specific hydrologic and hydrogeologic conditions to support stormwater capture, infiltration feasibility, drywell sizing, water quality treatment, and drainage design decisions. - Develop and review stormwater and civil design components, including LID features, infiltration BMPs, drywell systems, bioretention systems, permeable pavement, detention/retention facilities, grading concepts, drainage improvements, and erosion and sediment control measures. - Apply hydrologic and hydraulic modeling, drainage calculations, water quality sizing methods, and design documentation using tools such as Civil 3D, ArcGIS, HydroCalc, EPA SWMM, HEC-RAS, and related platforms. - Support plan check, permit coordination, and agency consultation with municipalities, Orange County agencies, Regional Water Quality Control Boards, public works departments, and other regulatory stakeholders. - Conduct and coordinate site visits, stormwater inspections, industrial/commercial facility inspections, BMP condition assessments, construction-phase observations, and other field-based activities, as needed. - Prepare technical memoranda, water quality plans, engineering calculations, design reports, figures, specifications, cost estimates, permit support materials, and client-ready deliverables. - Coordinate technical deliverables with CAD/GIS staff, including plan exhibits, water quali…