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Models and Documentation

STEPL 4.4
(Last updated: 9/28/2017)

STEPL 4.4 Updates and New Features

STEPL 4.4 User’s Guide

STEPL 4.4 Example Spreadsheet Model for 10 Watersheds (Microsoft Excel 2013)

STEPL 4.4 Example Spreadsheet Model for 30 Watersheds (Microsoft Excel 2013)

STEPL 4.4 Installation Package

Note: This update includes new BMP types (cropland and pastureland) and this version of STEPL has been upgraded to be compatible with Windows 10 and Excel 2016. It is also compatible with Windows 7 and Excel 2013.

STEPL 4.3b
(Last updated: 1/16/2017)

STEPL 4.3b Installation Package

Note: This version of STEPL has been upgraded to be compatible with Windows 10 and Excel 2013.

Slide Shows and Tutorial for STEPL 4.3
(Last updated: 11/16/2015)

EPA STEPL Training Workshop DC 08-25-2015

Region 5 Load Estimation Spreadsheet Model
(Last updated: 9/28/2017)

Region 5 Load Estimation Spreadsheet Model (Microsoft Excel 2013)

Region 5 Load Estimation Model User's Manual
(Last updated: 11/17/2005)

BMP Efficiency Calculator
(Last updated: 6/30/2010)

BMP Efficiency Calculator 1.0 Package

Additional Documents

STEPL 2.2 Field Data Entry Sheets
(Last updated: 07/01/2003)

Region 5 Load Estimation Model Field Data Entry Sheets
(Last updated: 07/01/2003)

BMP Descriptions For STEPL and Region 5 Models
(Last updated: 07/01/2003)

List of Alternative Load and Load Reduction Models
(Last updated: 09/24/2010)

 

 

Questions? Please contact:
STEPL support
Developed for EPA Office of Water
Grants Reporting and Tracking System
By Tetra Tech, Inc.

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