From the Delta Regional Monitoring Program:
The Delta Regional Monitoring Program (Delta RMP) is a stakeholder-directed project formed to improve understanding of water quality issues in the Sacramento-San Joaquin River Delta (the Delta). The goal of the RMP is to better coordinate and design current and future monitoring activities in and around the Delta to create a cost-effective approach for providing critically needed water quality information to better inform policy and regulatory decisions of the Central Valley Regional Water Quality Control Board and other federal, state and local agencies and organizations.
The Delta RMP monitored for current use pesticides (CUP) at various locations in the Delta from July 2015 to June 2017. Monitoring included chemical analyses and toxicity testing. The chemical parameters analyzed include several pesticide reporting groups, dissolved copper, and other conventional water quality parameters. Toxicity tests were performed using an algal species (Selenastrum capricornutum, also known as Raphidocelis subcapitata), invertebrates (Ceriodaphnia dubia, and Hyalella azteca), and a fish species (Pimephales promelas). Toxicity testing included evaluation of acute (survival) and chronic (growth, reproduction, biomass) toxicity endpoints. Monthly surface water samples were collected from 5 fixed sites representing key inflows to the Delta: Mokelumne River at New Hope Road, Sacramento River at Hood, San Joaquin River at Buckley Cove, San Joaquin River at Vernalis, and Ulatis Creek at Brown Road.
Monitoring was performed according to the Delta RMP Quality Assurance Program Plan (QAPP) and the Delta RMP FY15/16 Workplan and FY16/17 Workplan.
The Delta RMP Communication Plan calls for a technical report summarizing the first two years of current use pesticides monitoring. This solicitation is intended to answer that call.
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