Shasta College was the setting for Erosion Control Summit #1: a two day BMP workshop with Course instructors John McCullah and David Franklin who have teamed up for a number of years on Caltrans deliveries around the state.

We are pleased to roll out this new IGP SWPPP Template for you! This template follows the 2015 California Industrial General Permit (IGP) SWPPP Checklist (Appendix 1) and is intended to provide a baseline structure for developing a Stormwater Pollution Prevention Plan (SWPPP) for industrial facilities.

The State has provided us with new info on sampling and analysis for pH including how values for flow volume and time are more objective, but not required by the Permit. Additionally, averaging must be done such that acid and base values are averaged separately. Check out the Excel pH Averaging Spreadsheet here: https://dl.dropbox.com/u/15486643/pH%20Averaging.xlsx Check out the Boards guidance doc here: https://dl.dropbox.com/u/15486643/bulletin_2013_1.pdf If you have questions or are interested in more info, let me know. DAVID

Problems have been found in the underlying data in the calculator that affects sites in CA. In order to ensure that sites were not improperly qualifying for the R-factor waiver, the Office of Wastewater Management is working on fixing the problem. The calculator could be down for a few weeks while they sort this out. Until that time, you will need to perform these calculations using alternative methods.