Division H - Stormwater Management, Storm Sewers and LID

The type and extent of studies required as part of an EIS varies depending on the project and the availability of background information; generally, the Terms of Reference for an EIS are negotiated with the relevant planning authorities prior to the practitioner undertaking the study. [...] Source Control – Controls at the lot level that capture, infiltrate and/or treat stormwater runoff within the catchment to limit the runoff contributing to the ultimate outlet point and improve the quality of the runoff that does flow to the outlet. [...] Standards and Specifications Manual Division “H” - Stormwater Management, Storm Sewers & Low Impact Development or considered more appropriate than the simplified approach given the size and location of the development within the watershed and the sensitivity of the receiving waters in terms of morphology and habitat function. [...] The Simplified Design Approach may be adopted for watersheds whose development area is generally less than twenty hectares AND either one of the following two conditions apply: i The catchment area of the receiving channel at the point-of-entry of stormwater drainage from the development is equal to or greater than twenty-five square kilometres; OR ii Meets the following conditions: (1) The channe. [...] Erosion protection shall be 0.10m freeboard to the top of provided on the top, downslope and base of slope around the perimeter of the spillway consisting of a soil re- the facility.