Grassland Bypass Project Water Quality Monitoring Rudy Schnagl Central Valley Regional Water Quality Control Board 11/28/2011 DCRT Meeting 1
Terms • WDRs – Waste Discharge Requirements • Discharger – US Bureau of Reclamation and San Luis and Delta-Mendota Water Authority 11/28/2011 2
Lower San Joaquin River Basin Stanislaus River SJR near Vernalis Tuolumne River Del Puerto Creek Merced River Orestimba Creek Grasslands Watershed (370,000 acres) Drainage Project Area Mud Slough (97,000 acres) Salt Slough Mendota Pool 11/28/2011 DCRT Meeting 3
Two Monitoring Programs Developed by Required by Data Collection WDRs And Reporting Team 11/28/2011 DCRT Meeting 4
Grassland Bypass Project Monitoring Sites 11/28/2011 DCRT Meeting 5
11/28/2011 DCRT Meeting 6
Grassland Bypass Project Monitoring Sites = Required by WDRs 11/28/2011 DCRT Meeting 7
WDR Monitoring and Reporting Program Surface Water Monitoring Sites Merced River Crows Landing Fremont Ford Mud Slough Salt Slough San Luis Drain - Monitoring Site 11/28/2011 DCRT Meeting 8
Constituents Monitored • Selenium • Nutrient series – Nitrate • Molybdenum – Ammonia • Boron – Total Kjeldahl Nitrogen – Total Phosphorus • Flow – Ortho Phosphate • pH • Electrical Conductivity – 3 species chronic toxicity • Total suspended solids – Sediment • Temperature • Quality • Quantity 11/28/2011 DCRT Meeting 9
Additional WDR Monitoring • Stormwater • Internal Wetland Water Supply Channels (visual) 11/28/2011 DCRT Meeting 10
Irrigated Lands Regulatory Program Monitoring Requirements (customized by area monitored) • E. Coli bacteria • Additional Metals • Additional Nutrients • Pesticides • 303(d) listed constituents • Sediment – Toxicity – Pesticides – Other characteristics 11/28/2011 DCRT Meeting 11
Questions • What adjustments are needed in – Location – Frequency – Constituents – Types of analyses • Does the water quality sampling support evaluation of other monitoring efforts? • How should the GBP Monitoring coordinate with San Joaquin River Restoration Program and Irrigated lands Regulatory Program monitoring? 11/28/2011 DCRT Meeting 12
Monitoring Results
Concentration versus Load 11/28/2011 DCRT Meeting 14
Figure 3. Annual Loads of Selenium in Salt Slough 10,200 9,120 7,960 Pounds of Selenium 7,880 7,430 7,310 6,460 5,920 4,200 3,190 Grassland Bypass Project 2,530 449 873 356 366 352 166 243 235 326 283 186 118 67 11/28/2011 DCRT Meeting 15
GBP Annual Selenium Discharge WDR Critical Year Se Load Objectives 14,000 1986-96 Average (8,800 lbs) 12,000 WDR Phase I Se Load (lbs) 10,000 WDR Phase II all 8,000 WDR Wet Year Se Load Objectives 6,000 4,000 2,000 0 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Grassland Bypass Project Critical Wet Dr /Belo Normal 11/28/2011 DCRT Meeting 16
Applicable Water Quality Objectives Boron (mg/L) Selenium (ug/L) Molybdenum (ug/L) Water Body Continuous Max Continuous Max Continuous Max Wetland Channels -- -- 2 20 -- -- Salt Slough 2.0* 5.8 2 20 19 50 Mud Slough 2.0* 5.8 5 20 19 50 (north) (4-day ave.) San Joaquin River 2.0* 5.8 5 20 19 50 upstream of (4-day ave.) Merced River San Joaquin River 0.8* 2.0* 5 12 10 15 btwn Merced 1.0** 2.6** (4-day ave.) River and Vernalis Continuous objectives are monthly means unless otherwise noted. • *WQO applies from 15 March through 15 September • ** WQO applies from 16 September through 14 March
Mud Slough Downstream SLD Selenium (µg/L) 120 100 Selenium (µg/L) 80 60 40 20 0 04-Oct- 04-Oct- 04-Oct- 04-Oct- 04-Oct- 04-Oct- 04-Oct- 04-Oct- 95 97 99 01 03 05 07 09 Mud Slough Downstream SLD Selenium (µg/L) 11/28/2011 DCRT Meeting 18
Selenium in SJR at Lander and SJR at Fremont Ford (above project area) 25 20 Selenium (µg/L) 15 Due to the large number of non-detects in the SJR at Lander data set the non-detects were assigned the 10 numerical value of 0.2 µg/L instead of using the Reasonable Potential Calculator. Non-detects for the SJR at Fremont Ford data set were assigned numerical values 5 using the Reasonable Potential Calculator. 0 25-Oct-95 25-Oct-96 25-Oct-97 25-Oct-98 25-Oct-99 25-Oct-00 25-Oct-01 25-Oct-02 25-Oct-03 25-Oct-04 25-Oct-05 25-Oct-06 25-Oct-07 25-Oct-08 25-Oct-09 25-Oct-10 SJR at Lander Selenium (µg/L) SJR at Fremont Ford Selenium (µg/L)
SJR at Crows Landing Selenium (µg/L) 20 18 16 Selenium (µg/L) 14 12 10 8 6 4 2 0 01-Oct-95 01-Oct-97 01-Oct-99 01-Oct-01 01-Oct-03 01-Oct-05 01-Oct-07 01-Oct-09 SJR at Crows Landing Selenium (µg/L) Non-detects were assigned numerical values using the 11/28/2011 DCRT Meeting 20 Reasonable Potential Calculator
Selenium in SJR at Crows Landing (grab samples), SJR at Patterson, SJR at Maze, and SJR at Airport 9 8 7 Selenium (µg/L) 6 5 4 3 2 1 0 06-Oct-95 06-Oct-96 06-Oct-97 06-Oct-98 06-Oct-99 06-Oct-00 06-Oct-01 06-Oct-02 06-Oct-03 06-Oct-04 06-Oct-05 06-Oct-06 06-Oct-07 06-Oct-08 06-Oct-09 06-Oct-10 SJR at Crows Landing Selenium (µg/L) SJR at Patterson Selenium (µg/L) SJR at Maze Selenium (µg/L) SJR at Airport Selenium (µg/L) 11/28/2011 DCRT Meeting 21
Selenium in SJR at Crows Landing and at Airport Way 9 8 Selenium (ug/L) 7 6 5 4 3 2 1 0 10/6/1995 10/6/1996 10/6/1997 10/6/1998 10/6/1999 10/6/2000 10/6/2001 10/6/2002 10/6/2003 10/6/2004 10/6/2005 10/6/2006 10/6/2007 10/6/2008 10/6/2009 10/6/2010 SJR at Crows Landing Selenium (µg/L) SJR at Airport Selenium (µg/L) 11/28/2011 DCRT Meeting 22
Selenium at Agatha Canal, Camp 13 Drain, CCID Main, San Luis Canal, and Santa Fe Canal 120 Selenium (µg/L) Non-detects were assigned 100 numerical values using the Reasonable Potential 80 Calculator. 60 44 µg/L (Agatha Canal) 40 26.4 µg/L (Agatha Canal) 20 0 27-Oct-95 27-Oct-96 27-Oct-97 27-Oct-98 27-Oct-99 27-Oct-00 27-Oct-01 27-Oct-02 27-Oct-03 27-Oct-04 27-Oct-05 27-Oct-06 27-Oct-07 27-Oct-08 27-Oct-09 27-Oct-10 Agatha Canal Selenium (µg/L) Camp 13 Drain Selenium (µg/L) CCID Main Selenium (µg/L) San Luis Canal Selenium (µg/L) Santa Fe Canal Selenium (µg/L)
Boron in SJR at Crows Landing (samples collected with an autosampler) 1.8 1.6 1.4 Boron (mg/L) 1.2 1 0.8 0.6 0.4 0.2 0 02-Oct-95 02-Oct-96 02-Oct-97 02-Oct-98 02-Oct-99 02-Oct-00 02-Oct-01 02-Oct-02 02-Oct-03 02-Oct-04 02-Oct-05 02-Oct-06 02-Oct-07 02-Oct-08 02-Oct-09 02-Oct-10 SJR at Crows Landing Boron (mg/L) Non-detects were assigned numerical values using the 11/28/2011 DCRT Meeting 24 Reasonable Potential Calculator
Nutrients in SJR at Crows Landing 25 20 mg/L 15 10 5 0 25-May-00 25-May-02 25-May-04 25-May-06 25-May-08 25-May-10 SJR at Crows Landing Ammonia (mg/L) SJR at Crows Landing Nitrate (mg/L) SJR at Crows Landing TKN (mg/L) SJR at Crows Landing Orthophosphate (mg/L) SJR at Crows Landing Phosphorous (mg/L)
Selenium in SLD at Inflow and Terminous 160 140 120 100 Selenium (µg/L) 80 SLD Selenium (µg/L) Inflow to SLD Selenium (µg/L) 60 40 20 0 11/28/2011 DCRT Meeting 27
Selenium in SJR at Crows Landing (grab samples), SJR at Patterson, SJR at Maze, and SJR at Airport 9 8 7 SJR at Crows Landing Selenium (µg/L) SJR at Patterson Selenium (µg/L) SJR at Maze Selenium (µg/L) 6 SJR at Airport Selenium (µg/L) Selenium (µg/L) 5 4 Non-detects were assigned 3 numerical values using the Reasonable Potential Calculator. 2 1 0 11/28/2011 DCRT Meeting 28
Mud Slough Downstream SLD Boron (mg/L) 10 9 8 7 6 Boron (mg/L) 5 Mud Slough Downstream SLD Boron (mg/L) 4 3 2 1 0 11/28/2011 DCRT Meeting 29
Boron in SJR at Crows Landing (grab samples), SJR at Patterson, SJR at Maze, and SJR at Airport 1.8 1.6 1.4 SJR at Crows Landing Boron (mg/L) SJR at Patterson Boron (mg/L) 1.2 SJR at Maze Boron (mg/L) SJR at Airport Boron (mg/L) Boron (mg/L) 1 0.8 Non-detects were assigned numerical values using the Reasonable Potential Calculator. 0.6 0.4 0.2 0 11/28/2011 DCRT Meeting 30
Nutrients in SJR at Fremont Ford 18 16 14 SJR at Fremont Ford Ammonia (mg/L) SJR at Fremont Ford Nitrate (mg/L) SJR at Fremont Ford TKN (mg/L) 12 SJR at Fremont Ford Orthophosate (mg/L) SJR at Fremonth Ford Phosphorous (mg/L) 10 mg/L 8 Non-detects were assigned numerical values using the 6 Reasonable Potential Calculator. 4 2 0 11/28/2011 DCRT Meeting 31
Nutrients in Mud Slough above SLD 10 9 8 Mud Slough Upstream SLD Ammonia (mg/L) 7 Mud Slough Upstream SLD Nitrate (mg/L) Mud Slough Upstream SLD TKN (mg/L) Mud Slough Upstream SLD Orthophosphate (mg/L) 6 Mud Slough Upstream SLD Phosphorous (mg/L) mg/L 5 4 Non-detects were assigned numerical values using the 3 Reasonable Potential Calculator. 2 1 0 11/28/2011 DCRT Meeting 32
Nutrient Levels in SLD at Terminous 120 100 SLD Ammonia (mg/L) SLD Nitrate (mg/L) 80 SLD TKN (mg/L) SLD Orthophosphate (mg/L) SLD Phosphorous (mg/L) mg/L 60 Non-detects were assigned 40 numerical values using the Reasonable Potential Calculator. 20 0 11/28/2011 DCRT Meeting 33
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