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City of Lathrop ESCP Worksheet Rev.1011-912017 What is this document for? The City's Phase II Small MS4 NPDES General Permit issued by the State Water Board to the City, requires the City to develop and maintain a program to assure that sediment and other pollutants from construction activities do not flow into the City's storm water drainage system and, subsequently, impact local receiving waters. The City's Permit requires the City to require the owner of any construction project having soil disturbance to submit an Erosion and Sediment Control Plan (ESCP). The ESCP must identify potential sources of erosion and sedimentation associated with the project and identify the control measures (best management practices or BMPs) used to prevent erosion and control sedimentation within the project. This document is a worksheet to assist owners of small projects to determine appropriate control measures for their project. Who is required to complete this document? All construction projects that have soil disturbance and pass through plan check or the City's permitting process must develop an ESCP. Projects having more than 1 acre of soil disturbance or those projects that are part of a larger common plan may be required to comply with the State Water Board's Construction General Permit (CGP), which requires the development of a Storm Water Pollution Prevention Plan (SWPPP). For these larger projects, the CGP-required SWPPP may be submitted in lieu of the ESCP. For all other projects (small projects) having less than 1 acre of soil disturbance or those that qualify for a waiver or exemption from the CGP, they must submit an ESCP using this worksheet. What is required in this document? This worksheet requires basic project and contact BIVIPs, as defined on the EPA's website, is information, as well as, basic site information including ,a term used to describe a type of water location, status, approximate start and end dates and the pollution control. Storm water BMPs ore techniques, measures or structural area of soil disturbance. controls used to manage the quantity , improve The Best Management Practices (BMPs) that will be used The goal is to reduce or eliminate the during , - during construction are also required to be identified. contaminants collected . it moves into streams and rivers." A basic site map showing the project boundaries, adjacent For mor. detailsBIVIPs please streets, storm drain inlets, placement of BMPs, and where California Storm Water Quality construction work will be occurring is required to be Association's website at: included. www.casga.org/resources/bmp-handbook or Caltrans's website at: www.dot.ca.gov/hq/construc/stormwater/manuaIs.htm - 3 -