I will swppp stormwater drainage plan site grading pipe network runoff calculation

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xavier_yale
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xavier_yale
Engr Xavier

About this gig

Need a reliable civil engineer for stormwater management? You're in the right place.


I provide complete SWPPP documents, site grading plans, stormwater drainage design, pipe network layout, and accurate runoff calculations using industry-standard methods (Rational Method, NRCS/TR-55, Hydraflow, HydroCAD, or Civil 3D).


  • What I deliver:
  • SWPPP reports compliant with local & EPA regulations
  • Site grading plans (cut/fill, drainage flow direction, spot elevations)
  • Storm drain pipe network design & sizing
  • Runoff/peak flow calculations (pre & post-development)
  • Erosion & sediment control plans (BMPs)
  • AutoCAD Civil 3D / HydroCAD ready files


Why work with me:

Detail-oriented and accuracy-focused no shortcuts

Fast turnaround without compromising quality

Clear communication throughout the project

Experience handling municipal, residential & commercial site plans

Revisions included until you're satisfied


Whether you need a single calculation sheet or a full stormwater management package, I ensure your project meets regulatory standards and is submission-ready.


Please contact me before placing an order so I can review your project scope, site details, and re

Delivery style preference

Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.

Get to know Engr Xavier

Engr Xavier

Civil Engineer Specializing in Stormwater, Drainage Site Development Design

  • FromUnited States
  • Member sinceJul 2026
  • Languages

    English, French
I'm Engr. Xavier, a civil/environmental engineer specializing in SWPPP (Stormwater Pollution Prevention Plans) and stormwater drainage system design. With [X] years of hands-on experience, I deliver erosion & sediment control plans, BMP layouts, hydrology/hydraulic calculations, drainage grading, and regulatory-compliant documentation (NPDES, local & state standards). I've supported residential, commercial, and industrial sites nationwide. Skilled in AutoCAD Civil 3D, HydroCAD, HEC-HMS/RAS, and GIS. Let's build a plan that protects your site and passes inspection the first time.