• ...entory, stormwater runoff is a leading source of water pollution. The U.S. Environmental Protection Agency estimates that 20 to 150 tons of soil per acre are lost e ==Compliance guidance==
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  • ...ed primarily for stormwater control, but also exhibit social, economic and environmental benefits|alert-success}} ...y of Tucson)"> '''green stormwater infrastructure'''</span> (GSI) planning guidance was created to
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  • <font size=3>'''New requirements in the 2020 MS4 General Permit and related guidance materials'''</font size><br> ...new requirements in the 2020 MS4 General Permit (MNR040000) and associated guidance and outreach materials. In some cases, the permit requirements (items) list
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