The ESC By-law has two compliance components.
1. Specifying a threshold limit of the allowable level of sediment pollution; 75mg/L TSS.
2. Mandatory site management obligations for permitted construction projects that specify the level of site planning and management based on the size of the project.
In order to understand what the regulatory requirements for a particular construction project, you need to determine if the project results in a total disturbed area of less than or greater than 2000 square metres (approximately half an acre). This area requirement is set as a management trigger point at which the level of potential risk of soil pollution and the capability of standard BMP’s require different levels of expertise and supervision.
Smaller Construction Sites
Projects that are less than 2000 square metres are customarily less complex by nature and the area of construction and construction scenarios are able to be managed using commonly prescribed BMP’s.
Larger Construction Sites
Projects equal to or exceeding this area are deemed to be more complex and require detailed plans with appropriate BMP’s to manage site sediment discharge around the proposed construction.