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REDWOOD CITY <br />simulate upland loading of sediment, mercury, and PCBs and <br />instream delivery and transport. LSPC is built upon a relational <br />database platform, making it ideal for collating diverse datasets to <br />produce robust representations of natural systems. LSPC integrates <br />GIS outputs, comprehensive data storage and management <br />capabilities, the original HSPF algorithms, and a data analysis/post- <br />processing system into a convenient PC-based Windows <br />environment. The algorithms of LSPC are identical to a subset of <br />those in the HSPF model with selected additions, such as algorithms <br />to address land use change over time. LSPC is an open -source public - <br />domain watershed model available from EPA. <br />System for Urban Stormwater Treatment & Analysis Integration <br />(SUSTAIN) — Developed by EPA's Office of Research and <br />Development, SUSTAIN was primarily designed as a decision -support <br />system for selection and placement of GI projects at strategic <br />locations in urban watersheds. It includes a process -based <br />continuous project simulation module for representing flow and <br />pollutant transport routing through various types of GI projects. A <br />distinguishing feature of SUSTAIN is a robust cost -benefit <br />optimization model that incorporates dynamic, user-specified <br />project unit -cost functions to quantify the costs associated with <br />project construction, operation, and maintenance. The cost -benefit <br />optimization model runs iteratively to generate a cost-effectiveness <br />curve that is sometimes comprised of millions of GI project scenarios <br />representing different combinations of projects throughout a <br />watershed. Those results are used to make cost-effective <br />management recommendations by evaluating the trade-offs <br />between different scenarios. The "benefit' component can be <br />represented in several ways: (1) reduction in flow volume; (2) <br />reduction in load of a specific pollutant; or (3) other conditions <br />including numeric water quality targets, frequency of exceedances <br />of numeric water quality targets, or minimizing the difference <br />between developed and pre -developed flow -duration curves (USEPA <br />2009, Riverson et al. 2014). <br />RWC GREEN INFRASTRUCTURE PLAN <br />GREEN INFRASTRUCTURE PLAN <br />13 JUNE 2019 <br />ATTY/RESO.0075/CC RESO APPROVING THE GREEN INFRASTRUCTURE PLAN — EXHIBITA RESO. NO. 15780 <br />REV: 06-20-19 PR MUFF NO. 802 <br />