cooperative agricultural monitoring on california’s central coast: an integrated, innovative...
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![Page 1: Cooperative Agricultural Monitoring on California’s Central Coast: An Integrated, Innovative Approach Karen Worcester, Staff Environmental Scientist Alison](https://reader036.vdocuments.net/reader036/viewer/2022062518/56649f395503460f94c5653b/html5/thumbnails/1.jpg)
Cooperative Agricultural Monitoring Cooperative Agricultural Monitoring on California’s Central Coast:on California’s Central Coast:
An Integrated, Innovative ApproachAn Integrated, Innovative Approach
Karen Worcester, Staff Environmental Scientist Karen Worcester, Staff Environmental ScientistAlison Jones, Environmental ScientistAlison Jones, Environmental Scientist
Dave Paradies, Software DesignerDave Paradies, Software Designer
Central Coast Regional Water Quality Control BoardCentral Coast Regional Water Quality Control Board
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Central Coast Region
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Agricultural areas of the Central Coast
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In the Central In the Central Coast we have:Coast we have:
450,000 acres of irrigated agriculture A $3 billion industry 2500 growers Many operations under 50 acres 2 staff positions to run our “Ag
Waiver” program
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Conditional Waiver of Waste Discharge Requirements (WDRs)
1999 - State law amended Existing waivers expired January 1,
2003 New waivers may not exceed five
years Conditions must be enforced Waivers must include monitoring
What are “Ag Waivers”?What are “Ag Waivers”?
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MonitoringMonitoring
Implementation of Implementation of Management PracticesManagement Practices
EducationEducation
Both owner and operator must comply Both owner and operator must comply with the conditions of the waiverwith the conditions of the waiver
Farm PlanFarm PlanFarm PlanFarm Plan
All growers enroll All growers enroll individuallyindividually
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Farm PlanFarm PlanFarm PlanFarm Plan
Education RequirementsEducation Requirements 15 hours most easily met through
UCCE Farm Water Quality Short Course
Over 2000 growers have attended 51 Short Courses held; 13 more
planned over next 8 months Course product is Farm Plan
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With 1600 enrollees, we needed to With 1600 enrollees, we needed to leverage staffing with technology!leverage staffing with technology!
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Enrollment DatabaseEnrollment Database
Notice of Intent includes: Ranch Info Crop type Irrigation type Discharge type Management Practices Hard copy maps and education
certificateswww.ccamp.org
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Management practices, crop types, Management practices, crop types, irrigation practices are mapped byirrigation practices are mapped by
Township-Section-Range Township-Section-Range
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Monitoring Monitoring
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Elevated nitrate problems in intensively irrigated agricultural areas
Toxicity associated with organophosphates and pyrethroid pesticides in intensively irrigated agricultural areas
Central Coast Ambient Monitoring Program and SWAMP partners had shown:
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Mean Surface Water Nitrate Concentrations(mg/L)
#S#S 1.5 - 5#S 5 - 10#S 10 - 25#S 25 - 100
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Nitrate exceedances Nitrate exceedances in DHS Wellsin DHS Wells
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nitrate for all wells vs time
0
20
40
60
80
100
120
140
160
180
200
Aug-76 May-79 Feb-82 Nov-84 Aug-87 May-90 Jan-93 Oct-95 Jul-98 Apr-01
time
nit
rate all wells
single well
1970's5 samples
1980-1985790 samples
1985-19901300 samples
1990-19954120 samples 1995-2000
4420 samples
2000-20021370 samples
Drinking water MCL: 45 mg/l
Nitrate in Department of Health Services Well Data, 1980 - 2001
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Waiver allows for Cooperative Waiver allows for Cooperative Monitoring ProgramMonitoring Program
Nonprofit formed (Central Coast Water Quality Preservation, Inc.)
Cost allocation subcommittee
Monitoring subcommittee
Most funding for first three years
Phase 1 monitoring complete (25 sites); Phase 2 is underway (50 sites)
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Monitoring Program ElementsMonitoring Program Elements
50 sites in waterbodies with: Ag related TMDLs
Elevated groundwater nitrate levels
Follow-up in problem areas (@ 25% of monitoring budget)
Electronic reporting
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Monitoring ComponentsMonitoring Components(compatible with CCAMP design)(compatible with CCAMP design)
Monthly conventional monitoring and flow
3-species water toxicity testing Twice during high flow Twice during low flow
Sediment toxicity testing Benthic invertebrate assessment
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Integration with other Integration with other monitoring programsmonitoring programs
With CCAMP With City of Salinas stormwater
permit With SWAMP
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Phase 1 (yellow) and Phase 2 (red) Monitoring Sites
Monterey Bay
Pt. Conception
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Follow-up to Follow-up to detect source detect source areas; solve areas; solve problemsproblems
Long term siteLong term site
Basic MonitoringBasic Monitoring ConceptConcept
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FollowupFollowup
May take a problem-specific rather than site-specific approach
Includes evaluation: Existing research Pesticide Applications evaluation Crop patterns Other land uses Appropriate management practices
Includes outreach
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Electronic ReportingElectronic Reporting
Web-based data checkerFormat will port into SWAMPFormat will port into CCAMP
web site generator
www.ccamp.org
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Initial Cooperative Monitoring Initial Cooperative Monitoring Program FindingsProgram Findings
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Nitrate Nitrate (mg/L as N)(mg/L as N)Mean and range by waterbodyMean and range by waterbody
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Average Nitrate Concentrations at Ag Sites
Nitrate as N (mg/L)
0 – 1.5 1.5 – 5.0 5.0 – 10 10 – 25 25 - 100
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Mean Nitrate (mg/L) at Ag and CCAMP Sites
Nitrate as N (mg/L)
0 – 1.5 1.5 – 5.0 5.0 – 10 10 – 25 25 - 100
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Ceriodaphnia SurvivalCeriodaphnia Survival (relative percent difference from control)(relative percent difference from control)
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Ceriodaphnia Mortality (%)
0 – 20 20 - 40 40 – 60 60 - 80 80 - 100
Ceriodaphnia Mortality (%)
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Hyalella Mortality (%)
0 – 20 20 - 40 40 – 60 60 - 80 80 - 100
Hyalella Mortality (%)
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Fathead Minnow MortalityFathead Minnow Mortality
Pimephales Mortality (%)
0 – 20 20 - 40 40 – 60 60 - 80 80 - 100
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Selenastrum GrowthSelenastrum Growth (relative percent difference from control)(relative percent difference from control)
-40%
-20%
0%
20%
40%
60%
80%
100%
120%
140%
309A
SB
309B
LA
312O
FC
312O
FC
312O
R1
306M
OR
312S
M1
312O
FN
312B
CC
309M
ER
309A
SB
309N
AD
309A
LG
309S
AC
309E
SP
309S
SP
312O
FN
312G
VS
309C
RR
309J
ON
309M
ER
312B
CC
312O
R1
312O
FC
312O
RC
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What’s next?What’s next?
Linking land activities with monitoring sites
Water quality trends Practice implementation Pesticide use data Ranch mailings
Long term siteLong term site
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What’s next, cont.What’s next, cont.
Follow-up projects Ceriodaphnia toxicity Hyalella toxicity
Assessment of first year’s data Ag program web site development Locating non-filers
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For more information contact:For more information contact:Amanda Bern at Amanda Bern at [email protected]@waterboards.ca.gov or Karen at or Karen at [email protected]@waterboards.ca.govgov