Impacts of Illegal Marijuana Cultivation on Aquatic Resources Phase 2

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To determine the real threat to northern California aquatic resources posed by marijuana cultivation activities necessitates a difficult and sensitive study design. The first step is to define the potential stressors caused by marijuana production using the EPA’s Causal Analysis procedure to analyze all available data in yet to be determined northern California stream systems. This non-biased analysis will compare the threats of marijuana cultivation relative to historic and present land-use activities in the watershed. Once the threats are defined relative to other land-use activities, the next step is to accompany law enforcement personnel to secured marijuana fields to measure water quality and physical habitat impacts using standardized procedures. From this information and data, specific sampling protocols will be developed and communicated to all agencies involved with water resource protection. Additional goals are to better understand the effect of marijuana cultivation on anadromous fish; identify and prioritize areas to protect and/or restore; and to develop a process and/or data that can be used to quantify those effects. Ultimately, the goal of this project is to reduce and/or remove the negative effect of illicit marijuana cultivation on natural resources and to allow law enforcement to be more effective in prosecuting civil and environmental crime.

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