Data-driven insights for local properties

📊 Environmental Assessment Report

This comprehensive report analyzes both flood risk and industrial pollution exposure for this property. The assessment combines multiple data sources including USGS elevation, FEMA flood zones, historical storm modeling, and EPA Toxic Release Inventory records.

🌊 Part 1: Flood Risk Analysis

Property Overview

This section shows the fundamental characteristics of the property, including its elevation above sea level, FEMA flood zone designation, and our calculated overall flood risk rating based on historical data and topographic analysis.

Address
0 ETHYL RD PASADENA 77503
Elevation
19.86 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very Low
Risk based on FEMA zone and simulation.

Risk Assessment Outputs

These detailed metrics show the technical outputs from our flood risk model. They include predicted water depths at the property during a 5000-year flood event and estimated flood damage based on USACE methodology.

Risk Rating
Very Low
Flood Depth
0 ft ±0.5 ft
No flooding at current water level.
Water Surface Elevation (WSE)
N/A
Water surface elevation data not available.
Area Inundated
N/A
Data not available
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage Estimate (HCAD Valuation)
$0
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
Analysis Method
COG Bathtub Model
Raster-based flood inundation query

Flood Simulation

This simulation shows whether the property would flood based on a 5000-year flood event with 3m (9.84ft) water level. Use the interactive tool to explore different scenarios.

✅ Property Would Be Safe
Safety Margin: 9.86 feet
Severity: Safe

Adjust Flood Simulation

The analysis above uses default settings (5000-year flood, 3m/9.84ft water level). To explore different flood scenarios with interactive maps, return to the main tool:

Open Interactive Analysis Tool

Flood Risk Recommendations

Based on the property's flood risk profile, here are specific action items to consider.

  • FEMA Zone X (minimal hazard) - flood insurance available at preferred rates.
  • Review the interactive flood simulator to understand how different rainfall events could affect this property.
  • Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 90% of Houston homes
This ranking compares pollution levels within 2 miles of this property against 10,000 randomly sampled Houston metro properties. Lower percentiles indicate higher pollution exposure.
Industrial Pollution Nearby (Last 10 Years)
7.41 million lbs
Extremely High
1136.5x more than typical Houston property
≈ 371 dump trucks of chemicals within 2 miles
Total chemical releases from all industrial facilities within a 2-mile radius over the past decade (2014–2024). Data from EPA's Toxic Release Inventory tracking air, water, and land discharges.
💨 Air Pollution (Last 10 Years)
6.29 million lbs
Extremely High
1304.8x more than typical Houston property
Chemicals released into the air from nearby facilities over 10 years. Includes both fugitive emissions (leaks, evaporation) and stack emissions (smokestacks, vents). May affect local air quality.
💧 Water Pollution (Last 10 Years)
1.12 million lbs
Extremely High
Most Houston properties have none nearby
Chemical discharges to surface water (bayous, streams, drainage) from industrial facilities within 2 miles over the past decade. May impact local waterways and drainage systems.

❤️ Why It Matters

High chemical activity nearby can indicate industrial zones, truck traffic, or potential odor and noise issues. These factors may affect air quality, long-term property desirability, and neighborhood character. This data helps you understand the industrial footprint around your property.

🏙️ Houston Metro Benchmarks

Comparison with typical Houston properties (based on 10,000 randomly sampled homes). All measurements are for chemicals released within a 2-mile radius.

PeriodTotalAirWater
Typical Houston Property (2014-2024)6,524 lbs4,822 lbs0 lbs
This Property (2014-2024)7,414,836 lbs6,292,176 lbs1,122,660 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)792,238 lbs635,157 lbs75,375 lbs

📊 How This Property Compares to Houston Metro

Based on a random sample of 10,000 Houston properties, this chart shows the distribution of pollution levels across the metro area. The highlighted bar indicates where this property falls compared to other homes. Lower percentiles mean higher pollution exposure.

0-9thMost Polluted
9.9%
10-19th
10.1%
20-29th
9.9%
30-39th
10.1%
40-49th
9.7%
50-59th
10.2%
60-69th
6%
70-79th
5.8%
80-89th
4.3%
90-100thLowest Pollution
34.2%
Higher pollution than 90% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile (top 15% most polluted).

Top chemicals released near this property (past 10 years):

m-Cresol, 2,4-Dimethylphenol, p-Cresol, o-Cresol, Ethylene

View the full list of 75 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (75 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1m-Cresol108-39-445,935 lbs6,586 lbs5,666,444 lbs
22,4-Dimethylphenol105-67-913,055 lbs965 lbs4,229,319 lbs
3p-Cresol106-44-538,298 lbs3,292 lbs3,009,676 lbs
4o-Cresol95-48-727,446 lbs1,579 lbs1,767,181 lbs
5Ethylene74-85-11,557,991 lbs0 lbs1,557,991 lbs
6Phenol108-95-230,598 lbs3,108 lbs1,064,358 lbs
7Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
8Ammonia7664-41-7688,487 lbs39,739 lbs728,226 lbs
9n-Hexane110-54-3525,983 lbs221 lbs526,245 lbs
10Cumene98-82-8518,059 lbs11 lbs518,071 lbs
11Ethylene glycol107-21-1344,305 lbs0 lbs344,305 lbs
12Propylene115-07-1289,050 lbs0 lbs289,050 lbs
13Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9278,374 lbs0 lbs278,374 lbs
14Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0213,345 lbs0 lbs213,345 lbs
15Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
16Methanol67-56-1180,974 lbs7,563 lbs188,537 lbs
17Benzene71-43-2178,920 lbs27 lbs178,949 lbs
18Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
19Aluminum (fume or dust)7429-90-5133,040 lbs0 lbs133,050 lbs
20Chlorine7782-50-5101,821 lbs0 lbs101,826 lbs
21Toluene108-88-3100,093 lbs557 lbs100,695 lbs
22Acetaldehyde75-07-092,740 lbs3,956 lbs96,696 lbs
23Xylene (mixed isomers)1330-20-756,327 lbs33 lbs56,369 lbs
24Chlorodifluoromethane (HCFC-22)75-45-646,271 lbs0 lbs46,271 lbs
251,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
26Certain glycol ethersN23037,104 lbs0 lbs37,104 lbs
27Styrene100-42-532,913 lbs0 lbs32,913 lbs
28Hydrogen sulfide7783-06-431,340 lbs0 lbs31,340 lbs
29o-Toluidine95-53-429,521 lbs51 lbs30,113 lbs
30Chlorothalonil1897-45-629,974 lbs83 lbs30,057 lbs
31Isobutyraldehyde78-84-228,404 lbs0 lbs28,404 lbs
32Carbon disulfide75-15-027,720 lbs0 lbs27,720 lbs
33Cyclohexane110-82-723,184 lbs51 lbs23,285 lbs
34Butyraldehyde123-72-823,130 lbs0 lbs23,130 lbs
35Zinc compoundsN98210,410 lbs6,866 lbs17,290 lbs
36Chloromethane74-87-315,422 lbs31 lbs15,478 lbs
37Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
38Chloroethane75-00-314,708 lbs41 lbs14,784 lbs
39Carbon tetrachloride56-23-514,345 lbs12 lbs14,358 lbs
40Ethylbenzene100-41-413,594 lbs22 lbs13,618 lbs
41Diaminotoluene (mixed isomers)25376-45-812,695 lbs51 lbs12,797 lbs
42m-Xylene108-38-311,963 lbs54 lbs12,017 lbs
43Vanadium compoundsN7706,236 lbs2,153 lbs8,389 lbs
44Aniline62-53-36,824 lbs25 lbs7,119 lbs
45Biphenyl92-52-46,522 lbs15 lbs6,552 lbs
46n-Butyl alcohol71-36-34,032 lbs0 lbs4,032 lbs
47Phthalic anhydride85-44-93,545 lbs0 lbs3,545 lbs
48Hydrogen cyanide74-90-83,231 lbs0 lbs3,231 lbs
49Manganese compoundsN4502,054 lbs262 lbs2,316 lbs
50Manganese7439-96-51,668 lbs543 lbs2,211 lbs
51Chromium7440-47-31,182 lbs925 lbs2,106 lbs
52Maleic anhydride108-31-61,686 lbs0 lbs1,686 lbs
53Nickel7440-02-0974 lbs543 lbs1,517 lbs
54o-Xylene95-47-61,330 lbs0 lbs1,330 lbs
551,3-Butadiene106-99-01,064 lbs0 lbs1,064 lbs
56Formaldehyde50-00-01,061 lbs0 lbs1,061 lbs
57Naphthalene91-20-31,023 lbs21 lbs1,045 lbs
58Hexachlorobenzene118-74-11,002 lbs1 lbs1,003 lbs
59Chromium compounds (except for chromite ore mined in the Transvaal Region)N090410 lbs417 lbs828 lbs
60Nickel compoundsN495443 lbs250 lbs694 lbs
61Lead compoundsN420291 lbs38 lbs330 lbs
62Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
63Cobalt7440-48-4250 lbs0 lbs250 lbs
64Copper7440-50-8250 lbs0 lbs250 lbs
651,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
661,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
67Diphenylamine122-39-4126 lbs0 lbs126 lbs
68Lead And Lead CompoundsN42056 lbs39 lbs96 lbs
69Dioxin and dioxin-like compoundsN15039 lbs0 lbs39 lbs
70Lead7439-92-11 lbs13 lbs14 lbs
71Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
72Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
73Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
74Mercury7439-97-60 lbs0 lbs2 lbs
75Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Ethylene glycol, Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene

View the full list of 54 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (54 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1159,132 lbs0 lbs159,132 lbs
2Ethylene glycol107-21-1111,462 lbs0 lbs111,462 lbs
3Ammonia7664-41-776,682 lbs93 lbs103,433 lbs
4Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
5Propylene115-07-157,757 lbs0 lbs57,757 lbs
6Cumene98-82-835,001 lbs0 lbs35,140 lbs
7Methanol67-56-13,330 lbs336 lbs25,653 lbs
8n-Hexane110-54-320,460 lbs5 lbs20,476 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-020,007 lbs0 lbs20,007 lbs
10Benzene71-43-219,530 lbs2 lbs19,533 lbs
11Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
12Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,341 lbs0 lbs17,341 lbs
13Aluminum (fume or dust)7429-90-513,724 lbs0 lbs13,724 lbs
14Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
15Zinc compoundsN982678 lbs476 lbs9,871 lbs
16Phenol108-95-26,849 lbs151 lbs8,729 lbs
17Acetaldehyde75-07-08,300 lbs380 lbs8,680 lbs
18m-Cresol108-39-45,580 lbs416 lbs7,579 lbs
192,4-Dimethylphenol105-67-91,591 lbs64 lbs7,241 lbs
20Vanadium compoundsN7700 lbs0 lbs6,689 lbs
21p-Cresol106-44-54,895 lbs208 lbs5,894 lbs
22o-Cresol95-48-73,280 lbs103 lbs5,059 lbs
23Toluene108-88-33,102 lbs3 lbs4,948 lbs
241,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,777 lbs
25Isobutyraldehyde78-84-24,431 lbs0 lbs4,431 lbs
26o-Toluidine95-53-44,008 lbs5 lbs4,018 lbs
27Xylene (mixed isomers)1330-20-73,767 lbs5 lbs3,912 lbs
28Hydrogen sulfide7783-06-42,619 lbs0 lbs2,619 lbs
29Butyraldehyde123-72-82,507 lbs0 lbs2,507 lbs
30Carbon disulfide75-15-01,835 lbs0 lbs2,484 lbs
31Cyclohexane110-82-72,312 lbs5 lbs2,322 lbs
32Chloroethane75-00-32,102 lbs5 lbs2,107 lbs
33Chloromethane74-87-31,938 lbs5 lbs1,943 lbs
34Diaminotoluene (mixed isomers)25376-45-81,821 lbs5 lbs1,831 lbs
35Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
36Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
37Formaldehyde50-00-099 lbs0 lbs978 lbs
38Chlorine7782-50-5925 lbs0 lbs925 lbs
39n-Butyl alcohol71-36-3638 lbs0 lbs638 lbs
40Ethylbenzene100-41-4427 lbs3 lbs430 lbs
41Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
421,3-Butadiene106-99-0295 lbs0 lbs295 lbs
43Maleic anhydride108-31-6132 lbs0 lbs281 lbs
44Manganese7439-96-5162 lbs86 lbs248 lbs
45Chromium7440-47-371 lbs144 lbs215 lbs
46Lead compoundsN4200 lbs0 lbs161 lbs
47Naphthalene91-20-3132 lbs1 lbs133 lbs
48Nickel7440-02-018 lbs86 lbs104 lbs
49Lead And Lead CompoundsN4208 lbs1 lbs70 lbs
50Mercury compoundsN4580 lbs0 lbs46 lbs
51Diphenylamine122-39-423 lbs0 lbs23 lbs
521,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
53Certain glycol ethersN2301 lbs0 lbs1 lbs
54Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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