Irrigated Lands Regulatory Program
Water Quality Coalition Submittals & Reviews
Westside Water Quality Coalition (Westside)
Westside Submittals & Reviews
The Central Valley Water Board adopted Waste Discharge Requirements General Order (Order) for the Westside Water Quality Coalition on 19 September 2013 (Revised on 4 December 2014). The concept of higher and lower vulnerability areas was integrated into the Order to allow the board to tailor requirements to applicable waste discharge conditions. To determine what areas are vulnerable to surface water or groundwater impacts due to irrigated agriculture, the third-party representing growers is required to prepare assessment reports.
Surface Water - Westside
- Surface Water Sediment Discharge and Erosion Assessment Report (SDEAR) and Review
The goal of the report is to determine which irrigated agricultural areas are subject to erosion and may discharge sediment that may degrade surface waters. The objective of the report is to determine which Member operations are within such areas, and need to develop a Sediment and Erosion Control Plan.
Ground Water - Westside
- Groundwater Quality Assessment Report (GAR)
The Groundwater Quality Assessment Report identifies the high vulnerability groundwater areas where a Groundwater Quality Management Plan must be developed and implemented, and where Members must prepare and submit Nitrogen Management Plan Summary Reports to the Coalition.
- Groundwater Quality Management Plan (GQMP)
A Groundwater Quality Management Plan (GQMP) must be developed by the third-party for all high-vulnerability areas identified in the Groundwater Quality Assessment Report (GAR). In lieu of developing of separate GQMPs, the Order allows for the submittal of a comprehensive GQMP along with the GAR.
- Basin Plan Amendment Work Plan (BPAW)
In its Groundwater Quality Assessment Report, the third-party may identify high vulnerability areas that do not meet water quality objectives and where groundwater quality likely would not support a designated beneficial use even in the absence of the discharge of waste. In such cases, the third-party has the option of pursuing a basin plan amendment (or identifying an existing basin plan amendment process) to address the appropriateness of the beneficial use.
- Groundwater Quality Trend Monitoring Workplan (GQTMP)
The overall objectives of groundwater trend monitoring are to determine current water quality conditions of groundwater relevant to irrigated agriculture and develop long-term groundwater quality information that can be used to evaluate the regional effects of irrigated agricultural practices.
- Groundwater Quality Trend Monitoring Workplan (GQTMP) (18 May 2017)
- Revised Groundwater Quality Trend Monitoring Workplan (15 May 2018)