BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

few days to a week of time to review supporting documentation to understandhow to apply the model.AVAILABILITY AND SUPPORTING DOCUMENTATIONThe SWMM5 program and key supporting documentation is available fordownload at: http://www.epa.gov/ednnrmrl/models/swmm/Supporting documentation includes:• User’s Manual - provides information that is directly applicable for settingup and performing basic SWMM simulations.• Applications Manual – provides example applications that walk the userthrough applications of the model for stormwater management issues anddesign problems that are fairly common.1.4 AVAILABLE INFORMATION – LAKE TAHOE REGIONHYDROLOGY1.4.1 TMDL DEVELOPMENT AND MODELINGThe TMDL process was established by Congress under Section 303(d) of theClean Water Act. TMDLs are tools for implementing State water qualitystandards and are based on the relationship between pollution sources and instream(or lake) water quality conditions. The TMDL establishes the allowableloadings or other quantifiable parameters for a water body and therebyprovides the basis for States to establish water quality-based controls. Thesecontrols should be designed to provide the pollution reduction necessary for awater body to meet water quality standards. The EPA provides descriptionsand guidance for the TMDL process at: http://www.epa.gov/owow/tmdl.The Lake Tahoe TMDL program has conducted extensive research andproduced technical reports related to hydrology and stormwater quality in theLake Tahoe Region. The Lake Tahoe TMDL development is described inCharting a Course to Clarity, the Lake Tahoe Total Maximum Daily Load 9 and theLake Tahoe TMDL Technical Report 10 .As part of the TMDL program, a Lake Clarity Model and Watershed Modelwere developed for the Lake Tahoe Region. The Watershed Model wasdeveloped to quantify sources of pollutants from upland sources, and simulatesboth hydrology and pollutant loading. The model simulates fine sediment (