Del Mar Fairgrounds Racetrack

Active WDID 9 37I001942 Del Mar, San Diego County Region 9 · San Diego

At a glance

Permit Evidence: SMARTS record
Active Industrial
Notice of Intent (WDID code I) · Permits and applications
Location Evidence: facility-reported
Del Mar, San Diego County
Region 9 · San Diego · Location · Statewide map
Receiving water
San Dieguito Lagoon/River and Stevens Creek (as reported by the facility)
Evidence: not confirmed Details
Identified receiving water on the 2026 303(d) list
Not established
Shown only when the reported receiving water is identified and corroborated.
2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
3 waterbodies; 1 on the 2026 303(d) list
Proximity only; not a discharge pathway · Nearby waterbodies
Monitoring results Evidence: facility-reported
1,783 distinct results, 10 reporting years (2015 to 2025)
Most recent sample Feb 25, 2026 · Monitoring
Compliance and enforcement records Evidence: SMARTS record
10 inspections · 3 violation records · 4 enforcement actions
Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported
0 records
TMDL records

Each label shows where a statement comes from. How to read the labels.

Overview and location

Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby

Open this facility on the statewide map

Reported location Evidence: facility-reported

Coordinates
32.9703, -117.26317
Precision
4 decimal places
Shared point
No
Matches application record
same

Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.

Facility address
2260 Jimmy Durante Blvd, Del Mar 92014
Regional Water Board
9 — San Diego

HUC12 watershed Evidence: spatial

  • Lusardi Creek-San Dieguito River HUC12 180703040302

The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.

Permits and applications Evidence: SMARTS record

Current permit record

Permit type
Industrial
Application type
Notice of Intent (WDID code I)
Status
Active
Operator
22nd District Agricultural Association
Primary industry (SIC)
0272-Horses and Other Equines
Application ID
218202
NOI processed
Feb 03, 1993
Last certified
Oct 09, 2026
Facility size
356 Acres

Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.

Permit history

Storm water applications for this WDID, newest first
ApplicationTypeStatusProcessedTerminatedCertified
218202 IndustrialActiveFeb 03, 1993 —Oct 09, 2026

Every storm water application SMARTS records for this WDID, newest first (1).

Receiving water

Reported by the facility Evidence: facility-reported
San Dieguito Lagoon/River and Stevens Creek
Discharges directly / indirectly
Y / N (as answered in the permit application)

Evidence: not confirmed Not matchable to a single waterbody

Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.

Impaired waters and TMDLs

Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.

Nearby waterbodies Evidence: geographic proximity

Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.

Nearest 2026 Integrated Report waterbodies
Waterbody (2026 Integrated Report)Distance2026 303(d) listAppendix A decisions
San Dieguito Lagoon CAE905110002011121609290559 m not listed0
Pacific Ocean Shoreline, San Dieguito HU, at San Dieguito Lagoon Mouth at San Dieguito River Beach CAC9051100020091026215544586 m listed1
Pacific Ocean, La Jolla to San Onofre CAO9051100020200324050788592 m not listed0

Waterbodies within 1.0 km of the reported facility location. Method proximity/1.

SMARTS TMDL records Evidence: SMARTS-reported

No TMDL records for this facility in the SMARTS TMDL export.

Reported monitoring results Evidence: facility-reported

Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.

1,783 distinct measurements across 48 parameters, most recent sample Feb 25, 2026.

By reporting year

Distinct results by reporting year
Reporting year (July–June)Distinct resultsParametersWith several versionsFirst sampleLast sample
20252610 0 Nov 17, 2025Feb 25, 2026
2024189 0 Feb 19, 2025Mar 11, 2025
20232714 0 Jan 24, 2024Feb 05, 2024
20224412 0 Nov 17, 2022Mar 31, 2023
20204020 0 Jan 25, 2021Jan 25, 2021
201918020 0 Nov 21, 2019Feb 22, 2020
201812321 0 Oct 04, 2018Oct 13, 2018
201712621 0 Jan 09, 2018Mar 03, 2018
201663843 0 Dec 16, 2016Jan 19, 2017
201556140 0 Apr 07, 2015Sep 15, 2016

By parameter

Distinct results by parameter
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Chemical Oxygen Demand (COD)mg/L66 4Sep 15, 2015Feb 25, 2026 Results
Copper, Totalmg/L66 6Sep 15, 2015Feb 25, 2026 Results
Phosphorus, Total (as P)mg/L66 0Sep 15, 2015Feb 25, 2026 Results
Zinc, Totalmg/L66 3Sep 15, 2015Feb 25, 2026 Results
Total Suspended Solids (TSS)mg/L64 4Sep 15, 2015Feb 25, 2026 Results
Nitrogen, Total (as N)mg/L63 7Apr 07, 2015Nov 17, 2025 Results
Enterococci MPNMPN/100 mL61 1Sep 15, 2015Feb 05, 2024 Results
Fecal ColiformMPN/100 mL61 0Sep 15, 2015Feb 05, 2024 Results
Total ColiformMPN/100 mL61 0Sep 15, 2015Feb 05, 2024 Results
Chloridemg/L60 1Sep 15, 2015Mar 11, 2025 Results
Oil and Greasemg/L58 43Sep 15, 2015Feb 25, 2026 Results
pHSU58 0Sep 15, 2015Feb 25, 2026 Results
Show 36 more parameters
More parameters
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Ammonia, Total (as N)mg/L57 11Apr 07, 2015Feb 25, 2026 Results
Total Dissolved Solids (TDS)mg/L57 0Sep 15, 2015Feb 05, 2024 Results
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C)mg/L55 2Sep 15, 2015Jan 25, 2021 Results
Methylene Blue Active Substances (MBAS)mg/L55 32Sep 15, 2015Jan 25, 2021 Results
Nitrite Plus Nitrate (as N)mg/L50 1May 06, 2016Feb 25, 2026 Results
Total Kjeldahl Nitrogen (TKN) (as N)mg/L47 11Dec 16, 2016Mar 11, 2025 Results
TemperatureDegrees C41 0Sep 15, 2015Oct 04, 2018 Results
Antimony, Totalmg/L32 15Sep 15, 2015Jan 19, 2017 Results
Arsenic, Totalmg/L32 16Sep 15, 2015Jan 19, 2017 Results
Beryllium, Totalug/L32 23Sep 15, 2015Jan 19, 2017 Results
Cadmium, Totalmg/L32 20Sep 15, 2015Jan 19, 2017 Results
Chromium (Total)mg/L32 12Sep 15, 2015Jan 19, 2017 Results
Electrical Conductivity @ 25 Deg. Cumhos/cm32 0Sep 15, 2015Jan 19, 2017 Results
Ethylene glycolmg/L32 32Sep 15, 2015Jan 19, 2017 Results
Lead, Totalmg/L32 14Sep 15, 2015Jan 19, 2017 Results
Nickel, Totalmg/L32 12Sep 15, 2015Jan 19, 2017 Results
Selenium, Totalmg/L32 29Sep 15, 2015Jan 19, 2017 Results
Silver, Totalmg/L32 29Sep 15, 2015Jan 19, 2017 Results
Sulfate, Total (as SO4)mg/L32 7Sep 15, 2015Jan 19, 2017 Results
Thallium, Totalmg/L32 30Sep 15, 2015Jan 19, 2017 Results
Nitrate, Total (as N)mg/L30 0Apr 07, 2015Mar 11, 2025 Results
Gasolinemg/L28 28Dec 22, 2015Jan 19, 2017 Results
Nitrite, Total (as N)mg/L28 13Apr 07, 2015Jan 19, 2017 Results
Petroleum Hydrocarbons, Totalmg/L28 28Dec 22, 2015Jan 19, 2017 Results
Volatile Organic Compounds (VOCs)ug/L28 28Sep 15, 2015Jan 19, 2017 Results
Copper, Dissolvedmg/L23 9Jan 09, 2018Jan 25, 2021 Results
Zinc, Dissolvedmg/L23 3Jan 09, 2018Jan 25, 2021 Results
Nitrate, Total (as NO3)mg/L20 0Dec 16, 2016Mar 11, 2025 Results
Nitrite, Total (as NO2)mg/L16 8Dec 16, 2016Jan 19, 2017 Results
Tolueneug/L11 8Apr 07, 2016Jan 12, 2017 Results
Diesel Oilmg/L4 4Sep 15, 2015Sep 15, 2015 Results
Hydrocarbons, Total Petroleummg/L4 4Sep 15, 2015Sep 15, 2015 Results
Phenols, Totalmg/L4 0Dec 16, 2016Dec 16, 2016 Results
Vinyl Chlorideug/L4 4May 06, 2016May 06, 2016 Results
Bis (2-Ethylhexyl) Phthalateug/L2 0Dec 22, 2016Jan 12, 2017 Results
Toluene-d8mg/L2 0Dec 16, 2016Dec 16, 2016 Results

All results (1,783 distinct rows)

Reported monitoring results, newest first
Sample dateParameterResultUnitsLocation typeEventMethodReportVersions
Feb 25, 2026 Ammonia, Total (as N) .14 mg/L Effluent Qualifying Storm Event E350.1 1369533
Feb 25, 2026 Chemical Oxygen Demand (COD) 40 mg/L Effluent Qualifying Storm Event E410.4 1369533
Feb 25, 2026 Copper, Total .0029 mg/L Effluent Qualifying Storm Event E200.8 1369533
Feb 25, 2026 Nitrite Plus Nitrate (as N) .74 mg/L Effluent Qualifying Storm Event E300.0 1369533
Feb 25, 2026 Oil and Grease 1 mg/L Effluent Qualifying Storm Event E1664A 1369533
Feb 25, 2026 pH 7.8 SU Effluent Qualifying Storm Event pH_Field 1369533
Feb 25, 2026 Phosphorus, Total (as P) .18 mg/L Effluent Qualifying Storm Event E365.1 1369533
Feb 25, 2026 Total Suspended Solids (TSS) 3.7 mg/L Effluent Qualifying Storm Event A2540D 1369533
Feb 25, 2026 Zinc, Total .0092 mg/L Effluent Qualifying Storm Event E200.8 1369533
Jan 05, 2026 Ammonia, Total (as N) .044 mg/L Effluent Qualifying Storm Event E350.1 1365392
Jan 05, 2026 Chemical Oxygen Demand (COD) 27 mg/L Effluent Qualifying Storm Event E410.4 1365392
Jan 05, 2026 Copper, Total .003 mg/L Effluent Qualifying Storm Event E200.8 1365392
Jan 05, 2026 Nitrite Plus Nitrate (as N) .81 mg/L Effluent Qualifying Storm Event E300.0 1365392
Jan 05, 2026 Oil and Grease 1.1 mg/L Effluent Qualifying Storm Event E1664A 1365392
Jan 05, 2026 pH 7.7 SU Effluent Qualifying Storm Event pH_Field 1365392
Jan 05, 2026 Phosphorus, Total (as P) .36 mg/L Effluent Qualifying Storm Event E365.1 1365392
Jan 05, 2026 Total Suspended Solids (TSS) 17.7 mg/L Effluent Qualifying Storm Event A2540D 1365392
Jan 05, 2026 Zinc, Total .013 mg/L Effluent Qualifying Storm Event E200.8 1365392
Nov 17, 2025 Chemical Oxygen Demand (COD) 36 mg/L Effluent Qualifying Storm Event E410.4 1360168
Nov 17, 2025 Copper, Total .0024 mg/L Effluent Qualifying Storm Event E200.8 1360168
Nov 17, 2025 Nitrogen, Total (as N) 2 mg/L Effluent Qualifying Storm Event E350.1 1360168
Nov 17, 2025 Oil and Grease 2.8 mg/L Effluent Qualifying Storm Event E1664A 1360168
Nov 17, 2025 pH 7.6 SU Effluent Qualifying Storm Event pH_Field 1360168
Nov 17, 2025 Phosphorus, Total (as P) .23 mg/L Effluent Qualifying Storm Event E365.1 1360168
Nov 17, 2025 Total Suspended Solids (TSS) 5.2 mg/L Effluent Qualifying Storm Event A2540D 1360168
Nov 17, 2025 Zinc, Total .0094 mg/L Effluent Qualifying Storm Event E200.8 1360168
Mar 11, 2025 Chemical Oxygen Demand (COD) 41 mg/L Effluent Qualifying Storm Event E410.4 1344054
Mar 11, 2025 Chloride 410 mg/L Effluent Qualifying Storm Event E300.0 1344054
Mar 11, 2025 Copper, Total 3.3 mg/L Effluent Qualifying Storm Event E200.8 1344054
Mar 11, 2025 Nitrate, Total (as N) .7 mg/L Effluent Qualifying Storm Event E300.0 1344054
Mar 11, 2025 Nitrate, Total (as NO3) 3.1 mg/L Effluent Qualifying Storm Event E300.0 1344054
Mar 11, 2025 Nitrogen, Total (as N) 2.7 mg/L Effluent Qualifying Storm Event 1344054
Mar 11, 2025 Phosphorus, Total (as P) .39 mg/L Effluent Qualifying Storm Event E365.1 1344054
Mar 11, 2025 Total Kjeldahl Nitrogen (TKN) (as N) 2 mg/L Effluent Qualifying Storm Event E351.2 1344054
Mar 11, 2025 Zinc, Total 11 mg/L Effluent Qualifying Storm Event E200.8 1344054
Feb 19, 2025 Chemical Oxygen Demand (COD) 53 mg/L Effluent Qualifying Storm Event E410.4 1344054
Feb 19, 2025 Chloride 440 mg/L Effluent Qualifying Storm Event E300.0 1344054
Feb 19, 2025 Copper, Total 2.3 mg/L Effluent Qualifying Storm Event E200.8 1344054
Feb 19, 2025 Nitrate, Total (as N) .52 mg/L Effluent Qualifying Storm Event E300.0 1344054
Feb 19, 2025 Nitrate, Total (as NO3) 2.3 mg/L Effluent Qualifying Storm Event E300.0 1344054
Feb 19, 2025 Nitrogen, Total (as N) 2.6 mg/L Effluent Qualifying Storm Event 1344054
Feb 19, 2025 Phosphorus, Total (as P) .26 mg/L Effluent Qualifying Storm Event E365.1 1344054
Feb 19, 2025 Total Kjeldahl Nitrogen (TKN) (as N) 2.1 mg/L Effluent Qualifying Storm Event E351.2 1344054
Feb 19, 2025 Zinc, Total 11 mg/L Effluent Qualifying Storm Event E200.8 1344054
Feb 05, 2024 Chemical Oxygen Demand (COD) 16 mg/L Effluent Qualifying Storm Event E410.4 1281499
Feb 05, 2024 Copper, Total 2.7 mg/L Effluent Qualifying Storm Event E200.8 1281499
Feb 05, 2024 Enterococci MPN 34.4 MPN/100 mL Effluent Qualifying Storm Event A9230D 1281499
Feb 05, 2024 Fecal Coliform 49 MPN/100 mL Effluent Qualifying Storm Event A9221CE 1281499
Feb 05, 2024 Nitrate, Total (as NO3) 1.6 mg/L Effluent Qualifying Storm Event E300.0 1281499
Feb 05, 2024 Nitrite Plus Nitrate (as N) .4 mg/L Effluent Qualifying Storm Event E300.0 1281499

Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.

Compliance and enforcement records Evidence: SMARTS record

These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.

Compliance and enforcement records by type
Record typeRecordsAs publishedDatesRetrievedList
Violations3 3 Violation · 0 Potential (preliminary) · 0 Dismissed Sep 09, 2002 – Aug 22, 2007 Oct 21, 2026 All violations
Enforcement actions4 4 issued · 0 draft · 0 withdrawn, rescinded or superseded Oct 11, 2002 – Sep 10, 2003 Oct 21, 2026 All actions
Inspections10inspections, not findings Jun 22, 2001 – Oct 21, 2020 Oct 21, 2026 All inspections
Annual reports11certified reports (contents not shown) 2015 – 2025 Oct 21, 2026 All reports
Water-quality-based corrective action reports0reports, by parameter — Oct 21, 2026

Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.

Chronological record history (28 records, newest first)
Compliance and enforcement records, newest first
DateRecordIDType or purposeStatus as publishedDetail
Jul 08, 2026 Annual reports 1335738 Annual report 2025 —
Jul 15, 2025 Annual reports 1294573 Annual report 2024 —
Jul 09, 2024 Annual reports 1243680 Annual report 2023 —
Jul 27, 2023 Annual reports 1189705 Annual report 2022 —
Jul 13, 2022 Annual reports 1113111 Annual report 2021 —
Jul 01, 2021 Annual reports 1069139 Annual report 2020 —
Oct 21, 2020 Inspections 2049225 B Type compliance FinalizedNo Further Action
Jul 02, 2020 Annual reports 986436 Annual report 2019 —
Jul 05, 2019 Annual reports 954010 Annual report 2018 —
Jun 20, 2019 Inspections 2043111 Inspection from Vehicle —No Further Action
Jul 03, 2018 Annual reports 939429 Annual report 2017 —
Jul 14, 2017 Annual reports 878695 Annual report 2016 —
Jul 13, 2016 Annual reports 841526 Annual report 2015 —
Aug 22, 2007 Violations 668849 Unauthorized NSWD ViolationInspection
Nov 17, 2004 Inspections 336929 B Type compliance —
Sep 10, 2003 Enforcement actions 250444 Verbal Communication HistoricalUNKNOWN
Aug 29, 2003 Inspections 331513 B Type compliance —
Aug 29, 2003 Inspections 332112 B Type compliance —
Aug 29, 2003 Inspections 332113 B Type compliance —
Aug 29, 2003 Violations 241405 Deficient BMP Implementation ViolationInspection
May 05, 2003 Enforcement actions 242926 13267 Letter/Order (Water Code section 13267 letter or order) HistoricalUNKNOWN
Oct 11, 2002 Enforcement actions 247228 NOV (Notice of Violation) ActiveUNKNOWN
Oct 11, 2002 Enforcement actions 247229 13267 Letter/Order (Water Code section 13267 letter or order) HistoricalUNKNOWN
Sep 13, 2002 Inspections 326089 B Type compliance —
Sep 09, 2002 Inspections 326090 B Type compliance —

Sources and provenance

Sources behind this page
InformationSourceRetrieved or published
Permit, location, receiving-water textSMARTS Industrial Application Specific DataOct 20, 2026
Permit historySMARTS Storm Water ApplicationsOct 20, 2026
Monitoring resultsSMARTS Industrial Parameter DataOct 20, 2026
Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12)USGS2026-10-22
2026 California Integrated Report, Appendix A: 2026 303(d) List (final)SWRCB2026-10-22
Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0)SWRCB GIS2026-10-22
SMARTS TMDL requirementsSMARTS2026-10-21

Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.

How to read the evidence labels

Records are shown as published and are not compliance determinations. How geographic context is derived.