LA Cnty San Dist Calabasas Landfill

Active WDID 4 19I006192 Agoura, Los Angeles County Region 4 · Los Angeles

Watershed, receiving-water, nearby-water and TMDL information is temporarily unavailable. Permit and monitoring records below are complete.

At a glance

Permit Evidence: SMARTS record
Active Industrial
Notice of Intent (WDID code I) · Permits and applications
Location Evidence: facility-reported
Agoura, Los Angeles County
Region 4 · Los Angeles · Location · Statewide map
Receiving water
Las Virgenes Creek (as reported by the facility)
Evidence: identification unavailable 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
Evidence: unavailable
Monitoring results Evidence: facility-reported
2,291 distinct results, 11 reporting years (2015 to 2025)
Most recent sample Feb 23, 2026 · Monitoring
Compliance and enforcement records Evidence: SMARTS record
5 inspections · 12 violation records · 3 enforcement actions
Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported
Evidence: unavailable
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

34.148419, -118.717474

Coordinates as reported in the permit application; not a discharge point.

Facility address
5300 Lost Hills, Agoura 91301
Regional Water Board
4 — Los Angeles

HUC12 watershed Evidence: spatial

Unavailable.

Permits and applications Evidence: SMARTS record

Current permit record

Permit type
Industrial
Application type
Notice of Intent (WDID code I)
Status
Active
Operator
Los Angeles County Sanitation Districts
Primary industry (SIC)
4953-Refuse Systems
Application ID
189582
NOI processed
Apr 22, 1992
Last certified
Aug 16, 2019
Facility size
505 Acres
Impervious area
10 %

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

Permit history

Storm water applications for this WDID, newest first
ApplicationTypeStatusProcessedTerminatedCertified
189582 IndustrialActiveApr 22, 1992 —Aug 16, 2019

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

Receiving water

Reported by the facility Evidence: facility-reported
Las Virgenes Creek

Evidence: unavailable Match status unavailable.

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.

Evidence: unavailable Unavailable.

SMARTS TMDL records Evidence: SMARTS-reported

Evidence: unavailable Unavailable.

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.

2,291 distinct measurements across 87 parameters, most recent sample Feb 23, 2026.

By reporting year

Distinct results by reporting year
Reporting year (July–June)Distinct resultsParametersWith several versionsFirst sampleLast sample
202533919 0 Oct 17, 2025Feb 23, 2026
202412816 0 Jan 29, 2025Feb 18, 2025
202328816 0 Dec 21, 2023Mar 05, 2024
202231978 0 Sep 13, 2022Jan 10, 2023
202123416 0 Oct 25, 2021Apr 26, 2022
202017616 0 Dec 30, 2020Mar 15, 2021
201925216 0 Nov 29, 2019Mar 19, 2020
201819216 0 Nov 29, 2018Jan 31, 2019
201711116 0 Jan 08, 2018Mar 21, 2018
201617016 0 Oct 28, 2016Jan 19, 2017
20158222 0 Sep 15, 2015Mar 11, 2016

By parameter

Distinct results by parameter
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
pHSU144 0Sep 15, 2015Feb 23, 2026 Results
Total Suspended Solids (TSS)mg/L143 9Sep 15, 2015Feb 23, 2026 Results
Enterococci MPNMPN/100 mL137 3Sep 15, 2015Feb 23, 2026 Results
Nitrate, Total (as N)mg/L137 51Sep 15, 2015Feb 23, 2026 Results
Nitrite Plus Nitrate (as N)mg/L137 47Jan 05, 2016Feb 23, 2026 Results
Nitrite, Total (as N)mg/L137 81Sep 15, 2015Feb 23, 2026 Results
Dissolved Oxygenmg/L136 0Jan 05, 2016Feb 23, 2026 Results
Phosphorus, Total (as P)mg/L135 8Sep 15, 2015Feb 23, 2026 Results
E.coliMPN/100 mL133 13Sep 15, 2015Feb 23, 2026 Results
Oil and Greasemg/L132 109Sep 15, 2015Feb 23, 2026 Results
Cadmium, Totalmg/L80 27Sep 15, 2015Feb 23, 2026 Results
Copper, Totalmg/L80 9Sep 15, 2015Feb 23, 2026 Results
Show 76 more parameters
More parameters
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Iron, Totalmg/L80 1Sep 15, 2015Feb 23, 2026 Results
Lead, Totalmg/L80 43Sep 15, 2015Feb 23, 2026 Results
Zinc, Totalmg/L80 0Sep 15, 2015Feb 23, 2026 Results
Selenium, Totalmg/L79 45Sep 15, 2015Feb 23, 2026 Results
Iron, Total Recoverablemg/L63 0Jan 05, 2016Mar 15, 2021 Results
Cadmium, Total Recoverablemg/L61 7Jan 05, 2016Mar 15, 2021 Results
Copper, Total Recoverablemg/L61 1Jan 05, 2016Mar 15, 2021 Results
Lead, Total Recoverablemg/L61 10Jan 05, 2016Mar 15, 2021 Results
Zinc, Total Recoverablemg/L61 0Jan 05, 2016Mar 15, 2021 Results
Selenium, Total Recoverablemg/L59 7Jan 05, 2016Mar 15, 2021 Results
Diesel Oilug/L4 0Oct 17, 2025Nov 15, 2025 Results
Gasolineug/L4 3Oct 17, 2025Nov 15, 2025 Results
Motor Oilug/L4 4Oct 17, 2025Nov 15, 2025 Results
1,1,1,2-Tetrachloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,1,1-Trichloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,1,2,2-Tetrachloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,1,2-Trichloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,1-Dichloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,1-Dichloroethyleneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,2,3-Trichloropropaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,2-Dichlorobenzeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,2-Dichloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,2-Dichloropropaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
1,4-Dichlorobenzeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
2-Hexanoneug/L1 1Jan 05, 2023Jan 05, 2023 Results
4-Methyl-2-pentanoneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Acetoneug/L1 0Jan 05, 2023Jan 05, 2023 Results
Acrylonitrileug/L1 1Jan 05, 2023Jan 05, 2023 Results
Alkalinity, Bicarbonate (as CaCO3)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Alkalinity, Total (as CaCO3)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
alpha-Terpineolug/L1 1Jan 05, 2023Jan 05, 2023 Results
Ammonia, Total (as N)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Benzeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Benzoic Acidug/L1 1Jan 05, 2023Jan 05, 2023 Results
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Bromochloromethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Bromoformug/L1 1Jan 05, 2023Jan 05, 2023 Results
Bromomethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Carbon disulfideug/L1 1Jan 05, 2023Jan 05, 2023 Results
Carbon Tetrachlorideug/L1 1Jan 05, 2023Jan 05, 2023 Results
Chemical Oxygen Demand (COD)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Chloridemg/L1 0Jan 05, 2023Jan 05, 2023 Results
Chlorobenzeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Chloroethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Chloroformug/L1 1Jan 05, 2023Jan 05, 2023 Results
Chloromethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
cis-1,2-Dichloroetheneug/L1 1Jan 05, 2023Jan 05, 2023 Results
cis-1,3-Dichloropropeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Dibromochloromethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Dibromomethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Dichlorobromomethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Electrical Conductivity @ 25 Deg. Cumhos/cm1 0Jan 05, 2023Jan 05, 2023 Results
Ethylbenzeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Hardness, Ca (as CaCO3)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Hardness, Mg (as CaCO3)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
m,p-Xylenesug/L1 1Jan 05, 2023Jan 05, 2023 Results
Methyl Ethyl Ketoneug/L1 0Jan 05, 2023Jan 05, 2023 Results
Methyl Iodideug/L1 1Jan 05, 2023Jan 05, 2023 Results
Methylene Chlorideug/L1 1Jan 05, 2023Jan 05, 2023 Results
o-Xyleneug/L1 1Jan 05, 2023Jan 05, 2023 Results
p-Cresolug/L1 0Jan 05, 2023Jan 05, 2023 Results
Phenol, Single Compoundug/L1 0Jan 05, 2023Jan 05, 2023 Results
Potassium, Total Recoverablemg/L1 0Jan 05, 2023Jan 05, 2023 Results
Sodium, Totalmg/L1 0Jan 05, 2023Jan 05, 2023 Results
Styreneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Sulfate, Total (as SO4)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
Tetrachloroetheneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Tolueneug/L1 0Jan 05, 2023Jan 05, 2023 Results
Total Dissolved Solids (TDS)mg/L1 0Jan 05, 2023Jan 05, 2023 Results
trans-1,2-Dichloroetheneug/L1 1Jan 05, 2023Jan 05, 2023 Results
trans-1,3-Dichloropropeneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Trichloroetheneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Trichlorofluoromethaneug/L1 1Jan 05, 2023Jan 05, 2023 Results
Vinyl acetateug/L1 1Jan 05, 2023Jan 05, 2023 Results
Vinyl Chlorideug/L1 1Jan 05, 2023Jan 05, 2023 Results
Zinc, Totalug/L1 0Jan 05, 2023Jan 05, 2023 Results

Cadmium, Total Recoverable results (61 distinct rows, show all)

Reported monitoring results, newest first
Sample dateParameterResultUnitsLocation typeEventMethodReportVersions
Mar 15, 2021 Cadmium, Total Recoverable .001 mg/L Effluent Qualifying Storm Event E200.8 1149510
Mar 15, 2021 Cadmium, Total Recoverable .0009 mg/L Effluent Qualifying Storm Event E200.8 1149510
Mar 15, 2021 Cadmium, Total Recoverable < .0002 mg/L Effluent Qualifying Storm Event E200.8 1149510
Jan 29, 2021 Cadmium, Total Recoverable .0027 mg/L Effluent Qualifying Storm Event E200.8 1147743
Jan 29, 2021 Cadmium, Total Recoverable .0016 mg/L Effluent Qualifying Storm Event E200.8 1147743
Jan 28, 2021 Cadmium, Total Recoverable .0007 mg/L Effluent Qualifying Storm Event E200.8 1146980
Jan 28, 2021 Cadmium, Total Recoverable < .0002 mg/L Effluent Qualifying Storm Event E200.8 1146980
Dec 30, 2020 Cadmium, Total Recoverable .0077 mg/L Effluent Qualifying Storm Event E200.8 1141962
Dec 30, 2020 Cadmium, Total Recoverable .0031 mg/L Effluent Qualifying Storm Event E200.8 1141962
Dec 30, 2020 Cadmium, Total Recoverable .0055 mg/L Effluent Qualifying Storm Event E200.8 1141962
Dec 30, 2020 Cadmium, Total Recoverable DNQ .0001 mg/L Effluent Qualifying Storm Event E200.8 1141962
Mar 19, 2020 Cadmium, Total Recoverable .0004 mg/L Effluent Qualifying Storm Event E200.8 1108637
Mar 19, 2020 Cadmium, Total Recoverable .0017 mg/L Effluent Qualifying Storm Event E200.8 1108637
Mar 19, 2020 Cadmium, Total Recoverable .0008 mg/L Effluent Qualifying Storm Event E200.8 1108637
Mar 19, 2020 Cadmium, Total Recoverable .0009 mg/L Effluent Qualifying Storm Event E200.8 1108637
Mar 13, 2020 Cadmium, Total Recoverable .0034 mg/L Effluent Qualifying Storm Event E200.8 1108632
Mar 12, 2020 Cadmium, Total Recoverable .0008 mg/L Effluent Qualifying Storm Event E200.8 1108287
Mar 12, 2020 Cadmium, Total Recoverable .0006 mg/L Effluent Qualifying Storm Event E200.8 1108287
Mar 12, 2020 Cadmium, Total Recoverable DNQ .0001 mg/L Effluent Qualifying Storm Event E200.8 1108287
Dec 06, 2019 Cadmium, Total Recoverable .0002 mg/L Effluent Qualifying Storm Event E200.8 1103799
Dec 06, 2019 Cadmium, Total Recoverable .0005 mg/L Effluent Qualifying Storm Event E200.8 1103799
Dec 04, 2019 Cadmium, Total Recoverable .0016 mg/L Effluent Qualifying Storm Event E200.8 1104098
Dec 04, 2019 Cadmium, Total Recoverable .0058 mg/L Effluent Qualifying Storm Event E200.8 1104098
Nov 29, 2019 Cadmium, Total Recoverable .001 mg/L Effluent Qualifying Storm Event E200.8 1099824
Nov 29, 2019 Cadmium, Total Recoverable < .0002 mg/L Effluent Qualifying Storm Event E200.8 1099824
Nov 29, 2019 Cadmium, Total Recoverable .002 mg/L Effluent Qualifying Storm Event E200.8 1099824
Nov 29, 2019 Cadmium, Total Recoverable < .0002 mg/L Effluent Qualifying Storm Event E200.8 1099824
Jan 31, 2019 Cadmium, Total Recoverable .034 mg/L Effluent Qualifying Storm Event E200.8 1051441
Jan 12, 2019 Cadmium, Total Recoverable .0034 mg/L Effluent Qualifying Storm Event E200.8 1049225
Jan 12, 2019 Cadmium, Total Recoverable .004 mg/L Effluent Qualifying Storm Event E200.8 1049225
Jan 12, 2019 Cadmium, Total Recoverable .0046 mg/L Effluent Qualifying Storm Event E200.8 1049225
Jan 07, 2019 Cadmium, Total Recoverable .002 mg/L Effluent Qualifying Storm Event E200.8 1049202
Jan 07, 2019 Cadmium, Total Recoverable .0036 mg/L Effluent Qualifying Storm Event E200.8 1049202
Dec 06, 2018 Cadmium, Total Recoverable .0115 mg/L Effluent Qualifying Storm Event E200.8 1049157
Dec 06, 2018 Cadmium, Total Recoverable .0448 mg/L Effluent Qualifying Storm Event E200.8 1049157
Dec 06, 2018 Cadmium, Total Recoverable .0093 mg/L Effluent Qualifying Storm Event E200.8 1049157
Nov 29, 2018 Cadmium, Total Recoverable .0199 mg/L Effluent Qualifying Storm Event E200.8 1043304
Nov 29, 2018 Cadmium, Total Recoverable .0167 mg/L Effluent Qualifying Storm Event E200.8 1043304
Nov 29, 2018 Cadmium, Total Recoverable .00598 mg/L Effluent Qualifying Storm Event E200.8 1043304
Mar 21, 2018 Cadmium, Total Recoverable .00628 mg/L Effluent Qualifying Storm Event E200.8 1001518
Mar 21, 2018 Cadmium, Total Recoverable .0678 mg/L Effluent Qualifying Storm Event E200.8 1001518
Mar 02, 2018 Cadmium, Total Recoverable .0244 mg/L Effluent Qualifying Storm Event E200.8 1000889
Mar 02, 2018 Cadmium, Total Recoverable .00592 mg/L Effluent Qualifying Storm Event E200.8 1000889
Jan 08, 2018 Cadmium, Total Recoverable .0223 mg/L Effluent Qualifying Storm Event E200.8 993920
Jan 08, 2018 Cadmium, Total Recoverable .0124 mg/L Effluent Qualifying Storm Event E200.8 993920
Jan 08, 2018 Cadmium, Total Recoverable .119 mg/L Effluent Qualifying Storm Event E200.8 993920
Jan 19, 2017 Cadmium, Total Recoverable .00382 mg/L Effluent Qualifying Storm Event E200.8 931590
Jan 19, 2017 Cadmium, Total Recoverable .00344 mg/L Effluent Qualifying Storm Event E200.8 931590
Jan 19, 2017 Cadmium, Total Recoverable .00392 mg/L Effluent Qualifying Storm Event E200.8 931590
Jan 05, 2017 Cadmium, Total Recoverable .00439 mg/L Effluent Qualifying Storm Event E200.8 931311

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
Violations12 12 Violation · 0 Potential (preliminary) · 0 Dismissed Jul 02, 1999 – Sep 30, 2022 Oct 21, 2026 All violations
Enforcement actions3 3 issued · 0 draft · 0 withdrawn, rescinded or superseded Oct 17, 2006 – Jun 12, 2012 Oct 21, 2026 All actions
Inspections5inspections, not findings Feb 23, 2005 – Oct 01, 2024 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 (31 records, newest first)
Compliance and enforcement records, newest first
DateRecordIDType or purposeStatus as publishedDetail
Jul 08, 2026 Annual reports 1335449 Annual report 2025 —
Jul 07, 2025 Annual reports 1294268 Annual report 2024 —
Oct 01, 2024 Inspections 2065702 B Type compliance FinalizedNo Further Action
Jul 05, 2024 Annual reports 1243354 Annual report 2023 —
Jul 03, 2023 Annual reports 1189357 Annual report 2022 —
Sep 30, 2022 Violations 883008 Incomplete/Insufficient SWPPP ViolationReport
Jul 13, 2022 Annual reports 1112738 Annual report 2021 —
Jul 07, 2021 Annual reports 1068748 Annual report 2020 —
Jul 07, 2020 Annual reports 986010 Annual report 2019 —
Jul 11, 2019 Annual reports 953566 Annual report 2018 —
Feb 20, 2019 Inspections 2042069 B Type compliance —No Further Action
Jul 06, 2018 Annual reports 938982 Annual report 2017 —
Jul 07, 2017 Annual reports 878225 Annual report 2016 —
Jul 06, 2016 Annual reports 844705 Annual report 2015 —
Jun 12, 2012 Enforcement actions 409020 SEL (Staff Enforcement Letter) Historical
Dec 17, 2010 Violations 848083 Deficient BMP Implementation ViolationReport
Dec 02, 2010 Inspections 2018419 Enforcement Follow-up —No Further Action
Oct 06, 2010 Enforcement actions 404644 SEL (Staff Enforcement Letter) Historical
Feb 05, 2009 Violations 843911 Deficient BMP Implementation ViolationReport
Nov 07, 2006 Inspections 1733838 Enforcement Follow-up —
Oct 17, 2006 Enforcement actions 320005 NOV (Notice of Violation) HistoricalNOV
Oct 04, 2006 Violations 468305 Incomplete/Insufficient SWPPP ViolationInspection
Oct 04, 2006 Violations 468311 Deficient BMP Implementation ViolationInspection
Oct 04, 2006 Violations 468316 Deficient BMP Implementation ViolationInspection
Oct 04, 2006 Violations 468319 Deficient BMP Implementation ViolationInspection

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

How to read the evidence labels

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