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PlumePrint · GALVESTON County

Texas City

Monitor 48-167-0005, 2021 to 2025, against every emission event filed in GALVESTON County. The monitor records no wind of its own, so modelled wind is used and judged more loosely.

Unexplained episodes

23 / 36

episodes with no matching report

Unseen releases

60 / 66

reported releases the monitor never clearly saw

Matched episodes

5

episodes a filed report does explain

PERIOD:
10 episodes · 29 reports (≥1,000 lb)
TOP — what facilities told the regulator: self-reported events listing SO2 (bar height ~ log of pounds)22 of 29 reported releases ≥ 1,000 lb SO2 never lifted the monitor above 2 ppbMarathon refinery(Blanchard)Valero refineryOther facilitiesBLANCHARD REFINING GALVESTON BAY REFINERY · incident 392439 · 61,677.24 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 398549 · 1,808.1 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 398929 · 3,716.55 lb · SEENBLANCHARD REFINING GALVESTON BAY REFINERY · incident 398994 · 5,078.28 lb · UNSEEN_WIND_TOWARDVALERO REFINING TEXAS CITY REFINERY · incident 399287 · 1,675.85 lb · SEENBLANCHARD REFINING GALVESTON BAY REFINERY · incident 400361 · 2,316.67 lb · SEENBLANCHARD REFINING GALVESTON BAY REFINERY · incident 400888 · 7,727.25 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 401150 · 2,424.69 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 401972 · 2,918.9 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 402296 · 6,214.84 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 402356 · 1,616.42 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 402502 · 1,626.54 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 403267 · 8,830.73 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 403420 · 3,729.05 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 403416 · 2,315.12 lb · SEENGULF COAST AMMONIA · incident 402495 · 1,388 lb · UNSEEN_WIND_AWAYBLANCHARD REFINING GALVESTON BAY REFINERY · incident 405437 · 1,342.49 lb · NO_DATABLANCHARD REFINING GALVESTON BAY REFINERY · incident 405792 · 6,069.44 lb · UNSEEN_WIND_TOWARDAIR PRODUCTS TEXAS CITY FACILITY · incident 435180 · 1,251.95 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 408414 · 2,732.09 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 409275 · 6,260.95 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 410224 · 40,994.4 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 410650 · 3,378.01 lb · FAINTBLANCHARD REFINING GALVESTON BAY REFINERY · incident 410829 · 1,289.85 lb · UNSEEN_WIND_TOWARDVALERO REFINING TEXAS CITY REFINERY · incident 411090 · 1,354.39 lb · UNSEEN_WIND_AWAYBLANCHARD REFINING GALVESTON BAY REFINERY · incident 412711 · 3,531.16 lb · UNSEEN_WIND_AWAYBLANCHARD REFINING GALVESTON BAY REFINERY · incident 413204 · 8,960.33 lb · NO_DATABLANCHARD REFINING GALVESTON BAY REFINERY · incident 413820 · 12,025.94 lb · UNSEEN_WIND_TOWARDBLANCHARD REFINING GALVESTON BAY REFINERY · incident 414195 · 10,356.1 lb · UNSEEN_WIND_AWAYseen by the monitorfaint bumpunseenBOTTOM — what the air recorded: hourly SO2 at EPA monitor; dots mark episodes of 5 ppb or more6 of 10 episodes have no overlapping SO2 report from any facility in the countySO2 at the monitor (ppb, sqrt scale)0151530459.6 ppb · 1 h · UNEXPLAINED5.9 ppb · 1 h · UNEXPLAINED13 ppb · 1 h · MATCHED6.8 ppb · 2 h · UNEXPLAINED15.8 ppb · 8 h · UNEXPLAINED6.8 ppb · 1 h · UNEXPLAINED43.7 ppb · 1 h · MATCHED8.6 ppb · 3 h · MATCHED15.9 ppb · 13 h · UNEXPLAINED6.1 ppb · 1 h · WEAK_MATCHmatchedweak match (startup window)no matching reportJanFebMarAprMayJunJulAugSepOctNovDecJan
UNEXPLAINEDMar 21, 2022 · 12h duration
Peak: 50.9 ppb SO2 · Wind from SSE (151.3°)
no report overlaps this window · Upwind cone swept on satellite map below ↓
Open AI Case File →
UNEXPLAINEDUPWIND CONE ACTIVE

Air arrived from the SSE (151.3°) during this 50.9 ppb event. Facilities in the shaded cone were upwind.

Show the wind during:

The shaded arc is where the air came from during the selected episode, widened by the uncertainty of the wind reading. Anything inside it was upwind; the arc says nothing about how far along it a source sat.

The fingerprint

Where the worst hours come from.

The share of hours from each wind direction that land in this monitor’s worst five per cent. One trajectory can be wrong. A pattern that holds across years is evidence.

Peak direction 130°, from the SE. Threshold 1.4 ppb. 0% of hours use wind measured on site. The pale outer band is the 90% interval.

0–10° · 1% of 967 hours10–20° · 1% of 929 hours20–30° · 2% of 1017 hours30–40° · 4% of 1025 hours40–50° · 6% of 900 hours50–60° · 6% of 862 hours60–70° · 5% of 737 hours70–80° · 2% of 681 hours80–90° · 2% of 846 hours90–100° · 2% of 976 hours100–110° · 3% of 1011 hours110–120° · 5% of 1130 hours120–130° · 12% of 1369 hours130–140° · 18% of 1680 hours140–150° · 13% of 2119 hours150–160° · 6% of 2458 hours160–170° · 3% of 2574 hours170–180° · 2% of 2655 hours180–190° · 3% of 2260 hours190–200° · 3% of 1644 hours200–210° · 3% of 1068 hours210–220° · 2% of 755 hours220–230° · 2% of 530 hours230–240° · 1% of 420 hours240–250° · 2% of 349 hours250–260° · 1% of 353 hours260–270° · 1% of 380 hours270–280° · 1% of 303 hours280–290° · 2% of 349 hours290–300° · 2% of 420 hours300–310° · 2% of 496 hours310–320° · 2% of 580 hours320–330° · 2% of 667 hours330–340° · 1% of 721 hours340–350° · 1% of 868 hours350–360° · 1% of 960 hoursNESW

Episodes with no matching report

Air recorded · No report filed · Click to inspect on map
DatePeakHoursWind fromActions
Mar 21, 202250.9 ppb12SSE (151.3°)Open case →
Feb 15, 202418.4 ppb2SE (146.1°)Open case →
May 12, 202315.9 ppb13SE (132.4°)Open case →
Apr 19, 202315.8 ppb8SSE (155.3°)Open case →
Sep 20, 20259.7 ppb2SE (139°)Open case →
Feb 23, 20239.6 ppb1SE (126.8°)Open case →
Oct 17, 20218.6 ppb1NNE (23.3°)Open case →
Oct 15, 20228.2 ppb3S (171.4°)Open case →
Mar 4, 20227.8 ppb3SE (129.2°)Open case →
Mar 3, 20227.6 ppb1SE (129.1°)Open case →

Reported releases the monitor did not see

Filed by facilities · Not seen by monitor
FacilityFiledReportedMonitor peakStatusActions
Blanchard Refining Galveston Bay RefinerySep 22, 202340,994.4 lb0.7 ppbwind toward410224 ↗
Blanchard Refining Galveston Bay RefineryJan 16, 202518,286.03 lb1.8 ppbwind toward434790 ↗
Blanchard Refining Galveston Bay RefineryDec 7, 202312,025.94 lb0.7 ppbwind toward413820 ↗
Blanchard Refining Galveston Bay RefineryDec 17, 202310,356.1 lb0.2 ppbwind away414195 ↗
Valero Refining Texas City RefineryAug 16, 202510,342.04 lb1 ppbwind toward444859 ↗
Blanchard Refining Galveston Bay RefineryMay 22, 20237,727.25 lb0.9 ppbwind toward400888 ↗
Blanchard Refining Galveston Bay RefineryApr 16, 20257,396 lb0.7 ppbwind toward439473 ↗
Blanchard Refining Galveston Bay RefineryDec 21, 20227,033.06 lb0.2 ppbwind toward392296 ↗
Blanchard Refining Galveston Bay RefineryJun 12, 20246,354.56 lb0.2 ppbwind toward424883 ↗
Blanchard Refining Galveston Bay RefineryJul 21, 20236,069.44 lb0.5 ppbwind toward405792 ↗

“Wind toward” means the monitor was downwind for part of the release and still recorded nothing unusual.