new river pollution from mexico - ibwc.gov · new river pollution from mexico ... the plan (treaty...
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New River Pollution from MexicoNew River Pollution from Mexico
Progress ReportProgress Report
California Regional Water Quality Control Board- Colorado River Basin
Jose L. Angel, Assistant Executive Officer, P.E.
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San DiegoSan Diego
TijuanaTijuana
Salton SeaSalton Sea
MexicoMexicoU.S.U.S.Pacific Ocean
Gulf of California
Palm DesertPalm
DesertArizonaArizonaArizona
CaliforniaCaliforniaCalifornia
Colorado RiverColorado River
New River
MexicaliMexicaliCalexicoCalexico
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Salton Sea WatershedSalton Sea Watershed
WatershedBoundary
PriorityPriority watershedwatershed•• Over 8,000 sq. miles Over 8,000 sq. miles •• Watershed impairedWatershed impaired•• NPS greatest TTWQNPS greatest TTWQ•• Transboundary issuesTransboundary issues•• Important habitatImportant habitat•• Migratory birds, pupfishMigratory birds, pupfish•• Closed basinClosed basin
Salton Sea
ColoradoRiver
New River
AlamoRiver
Gulf of California
US-MexicoBorder
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New River 101New River 101
ItIt’’s more like a s more like a ““draindrain”” than a than a ““riverriver””Originates in Mexicali Valley, MexicoOriginates in Mexicali Valley, MexicoCrosses into USA at CalexicoCrosses into USA at Calexico
Flow at Border ~ 150,000 ACFYFlow at Border ~ 150,000 ACFYTravels ~ Travels ~ 60 river miles to Outlet of Salton Sea60 river miles to Outlet of Salton SeaTotal flow at Salton Sea ~ 450,000 ACFYTotal flow at Salton Sea ~ 450,000 ACFY
Sources of FlowsSources of FlowsUrban, agricultural, & Urban, agricultural, & IndustIndust. Discharges. Discharges
Main Water Quality IssuesMain Water Quality IssuesPathogens, Nutrients, Pesticides, TrashPathogens, Nutrients, Pesticides, Trash
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New River New River BUsBUs
Preservation of Rare, Threatened, or Preservation of Rare, Threatened, or Endangered Species (RARE)Endangered Species (RARE)
Wildlife Habitat (WILD)Wildlife Habitat (WILD)
Warm Freshwater Habitat (WARM)Warm Freshwater Habitat (WARM)
Industrial Service Supply (IND)Industrial Service Supply (IND)
Freshwater Replenishment (FRSH)Freshwater Replenishment (FRSH)
Water NonWater Non--Contact Recreation (REC II)Contact Recreation (REC II)
Water Contact Recreation (REC I)Water Contact Recreation (REC I)
Designated Beneficial Uses of WaterDesignated Beneficial Uses of Water
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SocioSocio--economic Settingeconomic SettingMexicaliMexicali
Approximately 1,000,000 peopleApproximately 1,000,000 peopleHigh density metropolitan areaHigh density metropolitan areaQuestionable land use practices (residential mixed with Questionable land use practices (residential mixed with industrial, public schools adjacent to dumps and industry, industrial, public schools adjacent to dumps and industry, etc.)etc.)
Industrial and agriculturalIndustrial and agricultural--based economybased economyApproximately 190 Approximately 190 maquiladorasmaquiladorasOther major industries (Bimbo, Other major industries (Bimbo, MasecaMaseca, Coca Cola, , Coca Cola, KenworthKenworth, , paper mill, glass factories, flour mills, etc.)paper mill, glass factories, flour mills, etc.)Approximately 500,000 Approximately 500,000 agag acres of which 175,000 drain into acres of which 175,000 drain into New RiverNew River
Avg. family income less thanAvg. family income less than $8,000$8,000 a yeara year
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Pollution from MexicaliPollution from Mexicali
Municipal sewageMunicipal sewageIndustrial wastesIndustrial wastesSolid wastesSolid wastesAg, stormwater, urban runoffsAg, stormwater, urban runoffs
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The 50s through 70sThe 50s through 70s
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PollutionPollutionClose aligned to pollution growthClose aligned to pollution growthMain problem municipal raw sewageMain problem municipal raw sewage
No sewage treatment facilitiesNo sewage treatment facilitiesSeptic tanks wastes also discharged into RiverSeptic tanks wastes also discharged into River
1961 Mexico promises treatment w/in 3 yrs1961 Mexico promises treatment w/in 3 yrs
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First Treatment FacilitiesFirst Treatment FacilitiesOxidation lagoons completed in 1973Oxidation lagoons completed in 1973
Eliminated ~60% of raw sewage from riverEliminated ~60% of raw sewage from riverMexico promises additional facilitiesMexico promises additional facilities
To be To be ““completed by 1975completed by 1975””Dumping of septic tank wastes continuesDumping of septic tank wastes continuesNPS problems magnifyNPS problems magnify
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Late 80s early 90sLate 80s early 90s
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Raw sewage spills, bypassesRaw sewage spills, bypasses
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Treatment Lagoons ProblemsTreatment Lagoons Problems
•• UndisinfectedUndisinfected•• High in nutrientsHigh in nutrients•• High TSSHigh TSS
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Industrial wastesIndustrial wastes
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Livestock WasteLivestock Waste
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Trash DumpingTrash Dumping
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New River at Calexico (pre 2007)New River at Calexico (pre 2007)
Total (Total (AvgAvg) = 150) = 150--200 cfs200 cfs
Municipal WWTFs FlowMunicipal WWTFs Flow 20 %20 %
Direct IndustrialDirect Industrial 7.5 %7.5 %
Agricultural dischargesAgricultural discharges 65 %65 %
OtherOther 3.5 %3.5 %About ~ 20 MGDAbout ~ 20 MGDof raw sewageof raw sewage
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Pollution Problem (prePollution Problem (pre--2007)2007)
> 150 cu > 150 cu ydsyds/year/yearTrashTrash
DetectedDetectedPesticidesPesticides
Some detectedSome detectedVOCsVOCs
40% of Load to Salton Sea40% of Load to Salton SeaNutrients (PO4)Nutrients (PO4)
< 1.0 mg/L< 1.0 mg/LDissolved OxygenDissolved Oxygen
> 1,000,000> 1,000,000Fecal, E. ColiFecal, E. ColiConstituents of ConcernConstituents of Concern
AvgAvg Flow ~120 MGDFlow ~120 MGD
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Cleanup StrategyCleanup Strategy
(Pollution from Mexico)(Pollution from Mexico)
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State Control/cleanup StrategyState Control/cleanup Strategy
Binational Cooperation at all levels of Binational Cooperation at all levels of governmentgovernment
Technical and financial assistanceTechnical and financial assistanceBinational monitoring and surveillanceBinational monitoring and surveillance
Feds responsible for allowing pollutionFeds responsible for allowing pollutionOngoing representations about problemOngoing representations about problemTMDLsTMDLs for border pollutantsfor border pollutants
Adopted Adopted TMDLsTMDLs for Pathogens and Siltfor Pathogens and SiltTMDL for Dissolved Oxygen (5/2010)TMDL for Dissolved Oxygen (5/2010)
Political pressurePolitical pressure
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Binational Technical CommitteeBinational Technical Committee
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BTC RoleBTC Role
Conducts Conducts ““observation toursobservation tours”” in Mexicaliin MexicaliIdentify and discuss problemsIdentify and discuss problems
Identifies solutions to problemsIdentifies solutions to problemsOversee development and implementation of Oversee development and implementation of Binational sanitation projectsBinational sanitation projects
Shares/exchanges informationShares/exchanges informationConducts binational water quality Conducts binational water quality monitoringmonitoring
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$7.5 M$7.5 M
The Plan (Treaty Minute 294)The Plan (Treaty Minute 294)
Quick FixesQuick Fixes11 Emergency repairs11 Emergency repairs
$51 M$51 M
$26 M$26 M
Mexicali I ProjectsMexicali I Projects–– Sewer main rehabilitation (~20 miles)Sewer main rehabilitation (~20 miles)–– Telemetry equipmentTelemetry equipment–– Expected completion by 2004Expected completion by 2004
Mexicali II ProjectsMexicali II Projects–– New 20New 20--mgd pumping plantmgd pumping plant–– New 20New 20--mgd force mainmgd force main–– New 20New 20--mgd treatment plantmgd treatment plant
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Projects in MexicaliProjects in Mexicali
Quick FixesQuick Fixes
19951995 19991999 20042004
Mexicali II ProjectsMexicali II Projects
Mexicali I ProjectsMexicali I Projects
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Mexicali II ProjectMexicali II Project
CARRETERA MEXICALI-SAN FELIPE
LAS ARENITAS
CERRO PRIETO
A MEXICALI
PS-4
CA
RR
ETERA
MEX
ICA
LI - SAN
FELIPE
Cost EstimateMillions of USD
Installation of force main pipe - Phase 1 (9 Km)
Purchase and install force main pipe – Phase 2 (17 km)
Upgrade Pump Station 4
1.1
10.0
3.0
Las Arenitas WWTP 11.8
$ 25.9
LAS ARENITAS WWTP
48” Force Main Pipe
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New 20New 20--mgd WWTFmgd WWTF
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USGS Calexico StationUSGS Calexico Station
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New River - Fecal Coliforms
1
100
10,000
1,000,000
100,000,000
1995 1997 1999 2001 2003 2005
FC (M
PN
/100
ml)
Maximum Median
Standard no more than 10% samples/month shall exceed 400 MPN/1Standard no more than 10% samples/month shall exceed 400 MPN/100 ml00 ml
Las Las ArenitasArenitasGoes onlineGoes online
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New River - Dissolved Oxygen
0
1
2
3
4
5
6
7
8
12/12/2006 3/18/2007 3/20/2007 3/21/2007 3/26/2007 4/4/2007 4/9/2007
Date
DO
(mg/
L)
Las Las ArenitasArenitasGoes onlineGoes online
Standard = 5.0 mg/LStandard = 5.0 mg/L
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Analysis at the Border (postAnalysis at the Border (post--2007)2007)
> 150 cu > 150 cu ydsyds/year/year> 150 cu > 150 cu ydsyds/year/yearTrashTrash
Still a problemStill a problemDetectedDetectedPesticidesPesticides
Some detectedSome detected
40% of Load to Salton Sea40% of Load to Salton Sea
< 1.0 mg/L< 1.0 mg/L
> 1,000,000> 1,000,000
Pre Binational ProjectsPre Binational Projects Post Binational ProjectsPost Binational ProjectsIssueIssue
NonNon--detectdetectVOCsVOCs
20% of Load to Salton Sea20% of Load to Salton SeaNutrients (PO4)Nutrients (PO4)
~ 5.0 mg/L~ 5.0 mg/LDissolved OxygenDissolved Oxygen
~ 100 ~ 100 –– 60,00060,000Fecal, E. ColiFecal, E. Coli
AvgAvg Flow ~ 80Flow ~ 80--100 MGD100 MGD
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CalexicoCalexicoUSGS StationUSGS Station
InternationalInternationalDrainDrain
New River @ New River @ ReformaReforma BridgeBridge
Zaragoza Zaragoza Lagoons OutfallLagoons Outfall
N
Mexicali Drain Mexicali Drain @ @ TeranTeran
New River @New River @XochimilcoXochimilco LakeLakeAppendix A – New River
Sampling Stations
Binational Monitoring ProgramBinational Monitoring Program
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New River Upstream of LXNew River Upstream of LX
E. Coli Upstream of Lake Xochimilco
1
10
100
1,000
10,000
100,000
1,000,000
4/23/0
85/2
8/08
6/26/0
87/3
0/08
8/28/0
89/1
7/08
10/29
/081/2
8/09
2/18/0
93/2
5/09
Date
MPN
/100
ml
E. Coli
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New River at New River at ReformaReforma BridgeBridge
New River Reforma Bridge - E Coli
1
10
100
1,000
10,000
100,000
1,000,000
4/23/0
85/2
8/08
6/26/0
87/3
0/08
8/28/0
89/1
7/08
10/29
/081/2
8/09
2/18/0
93/2
5/09
Date
MPN
/100
ml
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Zaragoza Lagoons (Old WWTF)Zaragoza Lagoons (Old WWTF)
E. Coli Zaragoza Lagoons
1
10
100
1,000
10,000
4/23/0
85/2
8/08
6/26/0
87/3
0/08
8/28/0
89/1
7/08
10/29
/081/2
8/09
2/18/0
93/2
5/09
Date
MPN
/100
ml
E. Coli
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International DrainInternational Drain
E. Coli at International Drain
1
10
100
1,000
10,000
100,000
1,000,000
4/23/08 5/28/08 6/26/08 7/30/08 8/28/08 9/17/08 10/29/08 1/28/09Date
MPN
/100
ml
E. Coli
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New River in CalexicoNew River in Calexico
E. Coli at USGS Station
1
10
100
1,000
10,000
100,000
1,000,000
4/23/0
85/2
8/08
6/26/0
87/3
0/08
8/28/0
89/1
7/08
10/29
/081/2
8/09
2/18/0
93/2
5/09
Date
MPN
/100
ml
E. Coli
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DO in New River in CalexicoDO in New River in Calexico
DO in New River at USGS Station
0123456789
10
4/23/0
8
5/28/0
8
6/26/0
8
7/30/0
8
8/28/0
8
9/17/0
8
10/29
/08
1/28/0
9
2/18/0
9
3/25/0
9
Date
DO
(mg/
L) StandardStandard
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What Do Recent What Do Recent Data tell Us?Data tell Us?
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Illegal DischargesIllegal Discharges
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Mexicali I Treatment LagoonsMexicali I Treatment Lagoons
•• UndisinfectedUndisinfected•• High in nutrientsHigh in nutrients•• High TSSHigh TSS
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Observations/conclusionsObservations/conclusions
Certain slugs persistCertain slugs persistNeed to track/identify slug sourcesNeed to track/identify slug sources
Bacteria remains a serious problemBacteria remains a serious problemTrashTrashIndustrial dischargesIndustrial dischargesUndisinfectedUndisinfected dischargesdischargesNPS sources (e.g., pesticides)NPS sources (e.g., pesticides)
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Observations (contObservations (cont’’d)d)
Trash remains a significant problemTrash remains a significant problemAdds bacteria and other pollutantsAdds bacteria and other pollutantsDumping of toxicants a concernDumping of toxicants a concern
Industrial discharges must be addressedIndustrial discharges must be addressedSlaughterhouse dischargesSlaughterhouse dischargesDairies/Dairies/CAFOsCAFOs
NPS must be addressedNPS must be addressed
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Water Quality ImprovementsWater Quality Improvements
Significant reduction of pollution:Significant reduction of pollution:NutrientsNutrientsTSSTSSPathogensPathogensVOCsVOCsObjectionable odorsObjectionable odors
Significant increase in DO, claritySignificant increase in DO, clarity
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Remaining Water Quality ConcernsRemaining Water Quality Concerns
CWA 303(d) ImpairmentsCWA 303(d) ImpairmentsDissolved Oxygen, Trash, PathogensDissolved Oxygen, Trash, PathogensOrganochlorinatedOrganochlorinated Pesticides Pesticides
DDT, DDT, ChlorpyrifosChlorpyrifos, , DiazinonDiazinon, , DieldrinDieldrin, , ToxapheneToxaphene, DDD, DDE, , DDD, DDE, HexachlorobenzeneHexachlorobenzene
Nutrients, Selenium, PCBs, MercuryNutrients, Selenium, PCBs, MercuryToxicityToxicity
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Recent DevelopmentsRecent Developments
AB 1079 Signed into law in 2009AB 1079 Signed into law in 2009Directs State to prepare cleanup PlanDirects State to prepare cleanup Plan
Develop and Implement ProjectDevelop and Implement ProjectFocus New River pollution in Calexico area Focus New River pollution in Calexico area
Identify parties with responsibility for cleanupIdentify parties with responsibility for cleanupLitigation an optionLitigation an option
Identify sources of fundingIdentify sources of fundingCalEPACalEPA Secretary coordinating state cleanup effortsSecretary coordinating state cleanup efforts
Forming TACForming TAC
Funds availableFunds available$800k in state funds allocated to assist with planning effort$800k in state funds allocated to assist with planning effort$3.2M Fed funds for planning and actual work$3.2M Fed funds for planning and actual work$10$10--$20M from Army Corps of Engineers$20M from Army Corps of Engineers
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[email protected]@waterboards.ca.gov