|Starting February 15, 2016, growers within the jurisdiction of North Coast Regional Water Board with cannabis cultivation areas of 2,000 square feet or more must enroll in one of three tiers, depending on site conditions and threat to water quality. Tier 1 is a low- threat tier based on compliance with defined standard conditions and site characteristics. Tier 2 is a management tier, which requires the development and implementation of a water resource protection plan to meet standard conditions. Tier 3 is a cleanup tier, which requires the development and implementation of a cleanup and restoration plan.
The order includes standard conditions to address erosion control and drainage features, stream and wetland buffers, spoils management, water storage and use, irrigation runoff, fertilizers and pesticides, petroleum products and other chemicals, other wastes, and remediation, cleanup and restoration activities.