← Facilities

Industrial stormwater facility

CalPortland Company

WDID 6B15I006255 · Notice of Intent · Mojave, Kern

SIC 3241 · Cement, Hydraulic · Regional Board 6 - Lahontan Region

Official record — State Water Resources Control Board, Industrial General Permit

Hydrologic

Geographic context

Official facility coordinate plotted against the associated Final 2026 Integrated Report impaired-water geometry.

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  • Facility location (official coordinate)
  • Associated impaired-water geometry (Final 2026 Integrated Report)
  • YDOS-derived geographic context

Geometry shown is limited to waterbodies geographically associated with this facility. Geographic association does not establish a discharge connection, receiving-water connectivity, or causation.

Official facility point
35.03932, -118.30175
HUC12 subwatershed
Town of Mojave
HUC12 code
180902062004
Impaired-water associations (derived)
0

Official

Facility record

Facility name
CalPortland Company
WDID
6B15I006255
Application type
Notice of Intent
City
Mojave
County
Kern
ZIP
93501
Primary SIC code
3241
SIC description
Cement, Hydraulic
Date active
1992-04-22
Regional Water Board
Regional Board 6 - Lahontan Region

303(d) context

Associated impaired waters

Grouped by derived geographic association class.

Derived

No impaired water was geographically associated with this facility.

Associations are calculated from official facility coordinates, USGS HUC12 boundaries, and official 2026 impaired-water geometry. They do not establish a discharge connection or causation.

TMDL requirements

Water Board-stated TMDL waste load allocations applied to this industrial permit in SMARTS.

Official record — SMARTS TMDL dataset, State Water Board

No SMARTS TMDL requirement is recorded for this WDID. In the statewide TMDL export only permits in Regions 4, 8 and 9 currently carry industrial TMDL requirements, so an absence here is not a statement that the facility discharges to an unimpaired water.

Official monitoring

SMARTS monitoring

Self-reported industrial stormwater sampling results as submitted by the discharger to SMARTS.

Official record — SMARTS parameter data, State Water Board
Reported results
76
Sample events
23
Distinct parameters
4
Reporting years
2015 – 2025
First sample
2016-01-05
Latest sample
2026-02-16
Source regional dataset
Region 6B - Victorville
Source retrieved
Aug 21, 2026

Official SMARTS public reports

Parameters reported

Reported results over time

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Most recent reported results

Latest 25 of 76
Sample dateLocationParameterResultUnitsEvent
2026-02-16Center OutfallIron.81mg/LQualifying Storm Event
2026-02-16Center OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2026-02-16Center OutfallpH7.98SUQualifying Storm Event
2026-02-16Center OutfallTotal Suspended Solids (TSS)330mg/LQualifying Storm Event
2025-11-17Center OutfallIron.31mg/LQualifying Storm Event
2025-11-17Center OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2025-11-17Center OutfallpH8.04SUQualifying Storm Event
2025-11-17Center OutfallTotal Suspended Solids (TSS)160mg/LQualifying Storm Event
2025-11-15West OutfallIron.3mg/LQualifying Storm Event
2025-11-15West OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2025-11-15West OutfallpH8.81SUQualifying Storm Event
2025-11-15West OutfallTotal Suspended Solids (TSS)82mg/LQualifying Storm Event
2025-02-13Center OutfallIron1.1mg/LQualifying Storm Event
2025-02-13Center OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2025-02-13Center OutfallpH8.32SUQualifying Storm Event
2025-02-13Center OutfallTotal Suspended Solids (TSS)100mg/LQualifying Storm Event
2024-01-22Center OutfallIron.95mg/LQualifying Storm Event
2024-01-22Center OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2024-01-22Center OutfallpH7.95SUQualifying Storm Event
2024-01-22Center OutfallTotal Suspended Solids (TSS)200mg/LQualifying Storm Event
2023-12-22Center OutfallIron13mg/LQualifying Storm Event
2023-12-22Center OutfallOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2023-12-22Center OutfallpH8.2SUQualifying Storm Event
2023-12-22Center OutfallTotal Suspended Solids (TSS)3700mg/LQualifying Storm Event
2023-03-21Center OutfallIron2.06mg/LQualifying Storm Event

Monitoring rows are official self-reported SMARTS submissions, joined to this facility by WDID. California Stormwater Intelligence does not restate, correct, average or evaluate reported values, and no benchmark comparison or violation determination is made.

YDOS-derived

Numeric Action Level comparison

Reported SMARTS analytical results compared against the Numeric Action Levels of the Industrial General Permit version in effect for each reporting year (July 1 – June 30).

Derived
Reporting years evaluated
10
Years with an NAL exceedance
5
Most recent evaluated year
RY 2025
Ruleset
igp_nal_ruleset_v1 / igp_nal_v1
ParameterNAL typeCalculated valueNALResultSamples usedMethod

Iron, Total

iron_total

Annual0.473 mg/L1 mg/LAt or below NALAnnual average of 3 eligible result(s) compared with the annual NAL.0.47× threshold3 eligiblearithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported)

Oil and Grease

oil_grease

Instantaneous maximum0 samples above25 mg/LAt or below NALNo eligible result in this reporting year was outside the instantaneous maximum NAL.3 eligible3 non-detect as zerocount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

pH

ph

Instantaneous maximum0 samples above6 – 9 pH unitsWithin NAL rangeNo eligible result in this reporting year was outside the instantaneous maximum NAL.3 eligiblecount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

Total Suspended Solids (TSS)

tss

Instantaneous maximum0 samples above400 mg/LAt or below NALNo eligible result in this reporting year was outside the instantaneous maximum NAL.3 eligiblecount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

An NAL exceedance is a permit-defined condition that triggers Exceedance Response Actions under the Industrial General Permit. It is not a violation, an enforcement action, or a Water Board compliance determination. Annual values use the arithmetic average of eligible results with non-detects treated as zero; instantaneous maximum NALs (total suspended solids, oil and grease, pH) are exceeded when two or more eligible results in a reporting year fall outside the level. Rules transcribed from 2014-0057-DWQ as amended by 2015-0122-DWQ (effective 2015-07-01, superseded 2020-06-30); 2014-0057-DWQ as amended by 2018-0028-DWQ (effective 2020-07-01).

Documents

Documents on file

Attachment inventory recorded in the State Water Board SMARTS public attachment workflow for this permit.

Source inventory — SMARTS public attachments. Documents are operator-submitted.

No document inventory has been indexed for this permit yet. The statewide document index is being built out; coverage is reported on the data-freshness panel.

Attachments for this permit remain viewable in the source system. Open the SMARTS public workflow

Enforcement

Enforcement records

Enforcement actions as recorded by the State Water Board for this permit, in the source system's own terminology.

Source record — SMARTS enforcement data

Structured enforcement records are not yet connected for this site. The absence of a record is not a finding about this facility.

Reporting

Reporting and ERA records

Annual report and Exceedance Response Action information as stated by the source system, distinguished from what is inferred from document metadata.

Source record — SMARTS reporting data

Structured reporting and ERA records are not yet connected for this site.

Recent activity

Recent source changes

New or changed source records this platform detected for this permit, newest first.

Derived

No source change has been detected for this permit yet. Change detection begins from the date each dataset was first indexed.

Provenance

Source & provenance

Source agency
California State Water Resources Control Board
Source dataset
Industrial General Permit — permitted facilities (statewide GIS layer)
WDID
6B15I006255
Source feature ID
15337
Application type
Notice of Intent
Regional board derivation
WDID region prefix
Geometry status
valid
Last successful facility import
Sep 16, 2026, 10:48 PM UTC

Official IGP permitted facilities feature layer