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upgrading from a bituminous surface treatment ("chip seal") to <br /> asphalt or concrete: these are considered new impervious <br /> surfaces and are subject to the minimum requirements that are <br /> triggered when the thresholds identified for redevelopment <br /> projects are met. <br /> E. Underground utility projects: Underground utility projects that replace the <br /> ground surface with in-kind material or materials with similar runoff <br /> characteristics are only subject to Minimum Requirement #2, Construction <br /> Stormwater Pollution Prevention. <br /> (4) MINIMUM TECHNICAL REQUIREMENTS <br /> A. Minimum Requirement#1: Stormwater Site Plan Preparation <br /> A Stormwater Site Plan (SSP) shall be prepared for City review and approval. <br /> Stormwater Site Plans shall be prepared in accordance with the City's <br /> Stormwater Management Manual. <br /> B. Minimum Requirement#2: Construction Stormwater Pollution Prevention <br /> All new development and redevelopment projects are responsible for <br /> preventing erosion and discharge of sediment and other pollutants into <br /> receiving waters. Construction Stormwater Pollution Prevention shall be <br /> provided in accordance with the City's Stormwater Management Manual. <br /> C. Minimum Requirement#3: Source Control of Pollution <br /> All known, available and reasonable source control BMPs shall be applied to <br /> the project site. Source control BMPs shall be selected, designed, and <br /> maintained according to Volume IV of the City's Stormwater Management <br /> Manual. <br /> D. Minimum Requirement #4: Preservation of Natural Drainage Systems and <br /> Outfalls <br /> Natural drainage patterns shall be maintained, and discharges from the project <br /> site shall occur at the natural location,to the maximum extent practicable. The <br /> manner by which runoff is discharged from the project site must not cause a <br /> 18 <br />