San Luis San Luis Rey Rey

Monitoring Monitoring StationStation

2003-2004 Regional Urban 2003-2004 Regional Urban Runoff Monitoring Program Runoff Monitoring Program

UpdateUpdate

MEC0

50100

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

East

West

North

Order 2001-01Order 2001-01Program ComponentsProgram Components

Stream Bioassessment MonitoringStream Bioassessment Monitoring Long-term Mass Loading Station Long-term Mass Loading Station

MonitoringMonitoring Ambient Bay, Lagoon and Coastal Ambient Bay, Lagoon and Coastal

Receiving Waters MonitoringReceiving Waters Monitoring Dry weather monitoring (ICID Program)Dry weather monitoring (ICID Program) Coastal Storm Drain Outfall MonitoringCoastal Storm Drain Outfall Monitoring

Toxic Hot Spots MonitoringToxic Hot Spots Monitoring

Santa MargaritaSanta Margarita

Santa MargaritaSanta Margarita

Santa MargaritaSanta Margarita

Santa MargaritaSanta Margarita

Santa Margarita Santa Margarita WatershedWatershed

Fecal coliformFecal coliform

Total suspended solids (3/5) turbidity Total suspended solids (3/5) turbidity (3/5)(3/5)

BioassessmentBioassessment

Index of Biotic Integrity ratings Index of Biotic Integrity ratings mostly Fair or Good. mostly Fair or Good.

Highest taxa richness - IBI scores Highest taxa richness - IBI scores were close to some of the reference were close to some of the reference site scores. site scores.

ABLMABLM

Low chemistry (metals) Low chemistry (metals) concentrationsconcentrations

No sediment toxicityNo sediment toxicity Benthic community similar to other Benthic community similar to other

embaymentsembayments

San Luis ReySan Luis Rey

San Luis ReySan Luis Rey

San Luis ReySan Luis Rey

San Luis Rey WatershedSan Luis Rey Watershed

Total dissolved solidsTotal dissolved solids

Bioassessment – San Luis Bioassessment – San Luis ReyRey

Index of Biotic Ratings of Very Poor for both Index of Biotic Ratings of Very Poor for both sites and both surveys. sites and both surveys.

The in-stream physical habitat of these sites The in-stream physical habitat of these sites was marginal, which could be limiting, but the was marginal, which could be limiting, but the sites are quite similar to the Santa Margarita sites are quite similar to the Santa Margarita site on Camp Pendleton (which had a site on Camp Pendleton (which had a substantially higher IBI score), indicating substantially higher IBI score), indicating water quality may also have been a factor. water quality may also have been a factor.

. .

ABLM – San Luis ReyABLM – San Luis Rey 6 metals and 10 PAHs - all at very low 6 metals and 10 PAHs - all at very low

concentrations. concentrations. Very low mean ERM-Q. Very low mean ERM-Q. Sediment toxicitySediment toxicity Benthic community indices suggested that the Benthic community indices suggested that the

biotic community in the Estuary sediments was biotic community in the Estuary sediments was poor compared to other embayments in San poor compared to other embayments in San Diego County. Diego County.

Based on these results, San Luis Rey River Estuary Based on these results, San Luis Rey River Estuary ranked third best for sediment quality among the ranked third best for sediment quality among the coastal embayments in San Diego County. coastal embayments in San Diego County.

ABLM – Oceanside HarborABLM – Oceanside Harbor

Metals detected – copper and zinc Metals detected – copper and zinc above ERLabove ERL

Sediment toxicitySediment toxicity Good benthic communityGood benthic community

CarlsbadCarlsbad

CarlsbadCarlsbad

CarlsbadCarlsbad

Carlsbad – Agua Carlsbad – Agua HediondaHedionda

Fecal Coliform, TSS, TDS, TurbidityFecal Coliform, TSS, TDS, Turbidity

Toxicity only one storm event – Hyalella Toxicity only one storm event – Hyalella

(last year cerio in all three and hyalella (last year cerio in all three and hyalella in two events)in two events)

Trends increasing COD, TKN, total Trends increasing COD, TKN, total phosphorus, TSS, and turbidityphosphorus, TSS, and turbidity

Carlsbad – Escondido Carlsbad – Escondido CreekCreek

Fecal coliform, TDS, TurbidityFecal coliform, TDS, Turbidity

Diazinon – last four storm events Diazinon – last four storm events below 0.08 limit. Concentrations below 0.08 limit. Concentrations 0.06 to 0.03 ug/l0.06 to 0.03 ug/l

No toxicity last two seasonsNo toxicity last two seasons

Bioassessment- Carlsbad Bioassessment- Carlsbad WMAWMA

Two sites each Agua Hedionda and Two sites each Agua Hedionda and Escondido CreekEscondido Creek

Index of Biotic Integrity Very Poor at Index of Biotic Integrity Very Poor at all four sites. all four sites.

ABLM – Carlsbad WMAABLM – Carlsbad WMA

Buena Vista LagoonBuena Vista Lagoon 6 metals - low compared to ERL and ERM 6 metals - low compared to ERL and ERM

values. Concentrations of all the metals were values. Concentrations of all the metals were below their respective ERLs except copper. below their respective ERLs except copper.

Sediment Toxicity Sediment Toxicity Only three taxa were found in Buena Vista Only three taxa were found in Buena Vista

Lagoon, all of which were freshwater animals. Lagoon, all of which were freshwater animals. Based on these results, Buena Vista Lagoon Based on these results, Buena Vista Lagoon

ranked last overall among the coastal ranked last overall among the coastal embayments in San Diego County. This poor embayments in San Diego County. This poor ranking is likely due to the influence of fresh ranking is likely due to the influence of fresh water and lack of tidal flushing in the Lagoon.water and lack of tidal flushing in the Lagoon.

ABLM – Carlsbad WMAABLM – Carlsbad WMA

AguaAgua Hedionda Lagoon Hedionda Lagoon six metals detected only copper, six metals detected only copper,

exceeded ERL. exceeded ERL. Sediment toxicitySediment toxicity Benthic community indices suggested Benthic community indices suggested

that the biotic community in the that the biotic community in the Lagoon sediments was fair compared Lagoon sediments was fair compared to other embayments in San Diego to other embayments in San Diego County.County.

ABLM – Carlsbad WMAABLM – Carlsbad WMA

Batiquitos Lagoon Batiquitos Lagoon 6 metals detected - arsenic and copper 6 metals detected - arsenic and copper

exceeded ERLs. exceeded ERLs. Sediment toxicitySediment toxicity Benthic community indices was good compared Benthic community indices was good compared

to the other embayments. to the other embayments.

Based on these results, Batiquitos Lagoon ranked Based on these results, Batiquitos Lagoon ranked seventh overall (tied with Agua Hedionda seventh overall (tied with Agua Hedionda Lagoon) for sediment quality among the Lagoon) for sediment quality among the coastal embayments assessed. coastal embayments assessed.

ABLM – Carlsbad WMA ABLM – Carlsbad WMA

San Elijo Lagoon San Elijo Lagoon 9 metals detected none exceeded ERL value. 9 metals detected none exceeded ERL value. Sediment toxicitySediment toxicity Benthic community indices suggested that the Benthic community indices suggested that the

biotic community in the Lagoon sediments was biotic community in the Lagoon sediments was poor compared to other embayments in San poor compared to other embayments in San Diego County. Diego County.

Based on these results, San Elijo Lagoon ranked Based on these results, San Elijo Lagoon ranked second to last for sediment quality among the second to last for sediment quality among the coastal embayments in San Diego County. coastal embayments in San Diego County.

San DieguitoSan Dieguito

San DieguitoSan Dieguito

San DieguitoSan Dieguito

San DieguitoSan Dieguito

Total Dissolved SolidsTotal Dissolved Solids

Bioassessment – San Bioassessment – San DieguitoDieguito

Green Valley Creek at West Green Valley Creek at West Bernardo Drive - Very Poor Spring Bernardo Drive - Very Poor Spring 03 and Fall 04 03 and Fall 04

San Dieguito River below Lake San Dieguito River below Lake Hodges - Poor in October and Very Hodges - Poor in October and Very Poor in May. Poor in May.

ABLM – San DieguitoABLM – San Dieguito

6 metals detected non above ERL6 metals detected non above ERL No sediment toxicityNo sediment toxicity Poor benthic communityPoor benthic community

PenasquitosPenasquitos

PenasquitosPenasquitos

PenasquitosPenasquitos

PenasquitosPenasquitos

Total Dissolved ColiformTotal Dissolved Coliform

Fecal Coliform (5/9)Fecal Coliform (5/9)

Bioassessment - Bioassessment - PenasquitosPenasquitos

Los Peñasquitos Creek in Poway - IBI Los Peñasquitos Creek in Poway - IBI ranking very poorranking very poor

Carroll Canyon Creek in Sorrento Carroll Canyon Creek in Sorrento Valley – IBI ranking poor Valley – IBI ranking poor

The Carroll Canyon Creek site was rated The Carroll Canyon Creek site was rated slightly higher than the upstream site slightly higher than the upstream site on Los Peñasquitos Creek, possibly due on Los Peñasquitos Creek, possibly due to different watershed areas to different watershed areas contributing to the different streams.contributing to the different streams.

ABLM - PenasquitosABLM - Penasquitos

6 metals detected, none above ERL6 metals detected, none above ERL Sediment toxicitySediment toxicity Benthic community indices suggested that Benthic community indices suggested that

the biotic community in the Lagoon the biotic community in the Lagoon sediments was fair.sediments was fair.

Based on these results, Los Peñasquitos Based on these results, Los Peñasquitos Lagoon ranked near the middle for Lagoon ranked near the middle for sediment quality among the coastal sediment quality among the coastal embayments in San Diego County. embayments in San Diego County.

Mission BayMission Bay

Mission BayMission Bay

Mission BayMission Bay

Mission BayMission Bay

Mission Bay – Tecolote Mission Bay – Tecolote CreekCreek

Fecal Coliform, Total Suspended SolidsFecal Coliform, Total Suspended Solids

Diazinon - last two storms lower Diazinon - last two storms lower concentrations detected 0.07 and 0.05 concentrations detected 0.07 and 0.05 ug/l ug/l

Trends to watch – increasing Trends to watch – increasing concentrations of arsenic (dissolved and concentrations of arsenic (dissolved and total) concentrations still below WQO.total) concentrations still below WQO.

Bioassessment – Mission Bioassessment – Mission BayBay

Rose Creek, downstream of Highway Rose Creek, downstream of Highway 52 – very poor in spring, Poor in fall52 – very poor in spring, Poor in fall

Tecolote Creek in Tecolote Canyon Tecolote Creek in Tecolote Canyon Natural Park – Very Poor in spring, Natural Park – Very Poor in spring, Poor in fallPoor in fall

ABLM – Mission BayABLM – Mission Bay

7 of 9 metals were detected with 7 of 9 metals were detected with arsenic, copper, and lead exceeding arsenic, copper, and lead exceeding ERL values. ERL values.

No sediment toxicityNo sediment toxicity Good benthic communityGood benthic community

San Diego RiverSan Diego River

San Diego RiverSan Diego River

San Diego RiverSan Diego RiverSan Diego RiverSan Diego River

San Diego RiverSan Diego River

Fecal coliformFecal coliform

Turbidity (5/9)Turbidity (5/9)

Chlorpyrifos – detected last year Chlorpyrifos – detected last year above limit in all storms was non-above limit in all storms was non-detect for this seasomdetect for this seasom

Bioassessment – San Bioassessment – San Diego RiverDiego River

Mission Trails Regional Park – IBI Mission Trails Regional Park – IBI PoorPoor

Near Morena Blvd. in Mission Valley – Near Morena Blvd. in Mission Valley – IBI Very PoorIBI Very Poor

The Mission Valley site was the lowest The Mission Valley site was the lowest rated site in the San Diego County rated site in the San Diego County Stormwater program for both the Stormwater program for both the October and May surveys.October and May surveys.

ABLM – San Diego RiverABLM – San Diego River

No ABLM monitoring locationNo ABLM monitoring location

San Diego BaySan Diego Bay

San Diego BaySan Diego Bay

San Diego BaySan Diego Bay

San Diego BaySan Diego Bay

Chollas CreekChollas Creek

Fecal coliform, turbidity, diazinon, copper, Fecal coliform, turbidity, diazinon, copper, zinczinc

Lead above WQO last three storm events. Lead above WQO last three storm events. Increasing trend for lead.Increasing trend for lead.

Some continued toxicity to HyalellaSome continued toxicity to HyalellaNo ceriodaphnia toxicity in last 4 storm eventsNo ceriodaphnia toxicity in last 4 storm events

Trends – TSS, TDS, dissolved nickel Trends – TSS, TDS, dissolved nickel decreasing trendsdecreasing trends

Nitrate and lead increasing trendNitrate and lead increasing trend

Sweetwater RiverSweetwater River

Fecal coliform, Total dissolved solids, Fecal coliform, Total dissolved solids,

Diazinon (6/9) two of last three events Diazinon (6/9) two of last three events

Bioassessment – San Bioassessment – San Diego BayDiego Bay

Chollas Creek at Federal Blvd – Poor and very Chollas Creek at Federal Blvd – Poor and very poorpoor

Sweetwater River, at Highway 94 in Rancho San Sweetwater River, at Highway 94 in Rancho San Diego - very poorDiego - very poor

Sweetwater River along Bonita Road – very poor Sweetwater River along Bonita Road – very poor

The Sweetwater River sites had in-stream physical The Sweetwater River sites had in-stream physical characteristics that provided little stable habitat characteristics that provided little stable habitat for macroinvertebrate colonization, which may for macroinvertebrate colonization, which may have negatively affected the IBI scores.have negatively affected the IBI scores.

ABLM – San Diego Bay ABLM – San Diego Bay WMAWMA

Sweetwater EstuarySweetwater Estuary 7 of 9 metals were detected copper 7 of 9 metals were detected copper

and zinc exceeded ERLsand zinc exceeded ERLs High toxicityHigh toxicity Good benthic communityGood benthic community

Based on these results, Sweetwater Based on these results, Sweetwater River Estuary ranked third lowest River Estuary ranked third lowest among the coastal embayments in San among the coastal embayments in San Diego County. Diego County.

TijuanaTijuana

TijuanaTijuana

TijuanaTijuana

TijuanaTijuana

Tijuana Tijuana

Fecal coliform, ammonia, BOD, COD, Fecal coliform, ammonia, BOD, COD,

Total phosphorus, Total suspended Total phosphorus, Total suspended solids, turbiditysolids, turbidity

Chlorpyrifos (6/9), diazinon (9/9) Chlorpyrifos (6/9), diazinon (9/9) malathionmalathion

Toxicity to ceriodaphnia (9/9)Toxicity to ceriodaphnia (9/9)

Tijuana River - TIEsTijuana River - TIEs

Three compounds were singled out as Three compounds were singled out as being consistently associated with the being consistently associated with the toxic fraction of Tijuana River storm toxic fraction of Tijuana River storm water during the 2002-2003 water during the 2002-2003 investigation; diazinon, methyl investigation; diazinon, methyl dihydrojasmonate, and quinoline and its dihydrojasmonate, and quinoline and its byproducts. These three compounds byproducts. These three compounds were again identified and confirmed as were again identified and confirmed as contributing to toxicity in the 2003-2004 contributing to toxicity in the 2003-2004 monitoring season.monitoring season.

Bioassessment – Tijuana Bioassessment – Tijuana RiverRiver

Campo Creek - May 2004. The Index Campo Creek - May 2004. The Index of Biotic Integrity rating Poorof Biotic Integrity rating Poor

BUT there were several organisms BUT there were several organisms collected that were otherwise found collected that were otherwise found only at reference sites, and specific only at reference sites, and specific conductance was very low. The in-conductance was very low. The in-stream habitat of the site was marginal stream habitat of the site was marginal with anoxic silt deposits, and this may with anoxic silt deposits, and this may have prohibited the full colonization have prohibited the full colonization potential of macroinvertebrates.potential of macroinvertebrates.

ABLM – Tijuana RiverABLM – Tijuana River

6 metals detected none exceeded 6 metals detected none exceeded ERLs. ERLs.

No sediment toxicityNo sediment toxicity Benthic Community – FairBenthic Community – Fair

Based on these results, Tijuana River Based on these results, Tijuana River Estuary ranked second best among Estuary ranked second best among the coastal embayments in San Diego the coastal embayments in San Diego County. County.

TIEs for 04-05TIEs for 04-05

Chollas Creek (hyalella)Chollas Creek (hyalella) Sweetwater River (selenastrum – Sweetwater River (selenastrum –

complete TIE)complete TIE)

Agua Hedionda (ceriodaphnia) – Agua Hedionda (ceriodaphnia) – Watch for toxicity….Watch for toxicity….

Tijuana River – FinishedTijuana River – Finished

MEC