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
902 W THOMAS AVE PASADENA 77506
Building Size
1,900 sqft
Total structure area from HCAD building records.
Elevation
25.6 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
Property not flooded at current water level. No damage to calculate.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Property not flooded at current water level. No damage to calculate.
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: 15.6 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 89% 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)
6.08 million lbs
Extremely High
931.6x more than typical Houston property
≈ 304 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)
6.07 million lbs
Extremely High
1259.4x 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)
4 thousand lbs
Very 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)6,077,739 lbs6,073,251 lbs4,488 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)446,085 lbs346,970 lbs246 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 89% 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):

Propylene, Hydrogen cyanide, n-Hexane, Ammonia, Xylene (mixed isomers)

View the full list of 40 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (40 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Propylene115-07-11,208,542 lbs0 lbs1,208,542 lbs
2Hydrogen cyanide74-90-81,032,286 lbs0 lbs1,032,286 lbs
3n-Hexane110-54-31,025,204 lbs0 lbs1,025,623 lbs
4Ammonia7664-41-7654,067 lbs0 lbs654,067 lbs
5Xylene (mixed isomers)1330-20-7392,004 lbs723 lbs395,087 lbs
6Ethylene74-85-1370,774 lbs0 lbs370,774 lbs
7Benzene71-43-2280,782 lbs477 lbs281,823 lbs
8Toluene108-88-3276,239 lbs260 lbs277,380 lbs
9Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9250,113 lbs0 lbs250,113 lbs
10Hydrogen sulfide7783-06-4244,215 lbs0 lbs244,216 lbs
11Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
12Cyclohexane110-82-766,577 lbs0 lbs67,345 lbs
13Ethylbenzene100-41-460,168 lbs102 lbs60,870 lbs
141,3-Butadiene106-99-050,685 lbs0 lbs50,685 lbs
15Naphthalene91-20-320,014 lbs75 lbs21,419 lbs
161,2,4-Trimethylbenzene95-63-611,040 lbs0 lbs11,314 lbs
17Cumene98-82-88,769 lbs0 lbs8,953 lbs
18Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
19Ethylene glycol107-21-15,255 lbs0 lbs5,264 lbs
20Polycyclic aromatic compoundsN5902,887 lbs525 lbs3,613 lbs
21Methanol67-56-13,468 lbs0 lbs3,468 lbs
22Zinc compoundsN982219 lbs1,116 lbs2,826 lbs
23Styrene100-42-51,319 lbs0 lbs1,319 lbs
24Phenol108-95-20 lbs1,155 lbs1,155 lbs
25Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
26Chlorine7782-50-5268 lbs0 lbs268 lbs
27Mercury compoundsN458165 lbs1 lbs166 lbs
28Nickel7440-02-0120 lbs0 lbs120 lbs
29Mercury7439-97-6106 lbs0 lbs106 lbs
30Mercury And Mercury CompoundsN45897 lbs0 lbs97 lbs
31Certain glycol ethersN23080 lbs0 lbs80 lbs
32Manganese7439-96-570 lbs0 lbs70 lbs
33Isoprene78-79-560 lbs0 lbs60 lbs
34Lead compoundsN4206 lbs46 lbs52 lbs
35Chromium7440-47-340 lbs0 lbs40 lbs
36C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
37Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
38Benzo[g,h,i]perylene191-24-23 lbs7 lbs11 lbs
39Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
40Lead And Lead CompoundsN4202 lbs1 lbs3 lbs

Top chemicals released near this property (2024 only):

Diethanolamine, Ammonia, Hydrogen cyanide, n-Hexane, Propylene

View the full list of 37 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (37 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Diethanolamine111-42-210,092 lbs0 lbs85,621 lbs
2Ammonia7664-41-775,153 lbs0 lbs83,460 lbs
3Hydrogen cyanide74-90-873,728 lbs0 lbs73,728 lbs
4n-Hexane110-54-338,376 lbs0 lbs38,409 lbs
5Propylene115-07-134,344 lbs0 lbs34,344 lbs
6Xylene (mixed isomers)1330-20-731,993 lbs20 lbs32,334 lbs
7Benzene71-43-218,893 lbs112 lbs19,577 lbs
8Toluene108-88-319,329 lbs6 lbs19,437 lbs
9Ethylene74-85-117,246 lbs0 lbs17,246 lbs
10Hydrogen sulfide7783-06-414,345 lbs0 lbs14,345 lbs
11Ethylene glycol107-21-1500 lbs0 lbs7,519 lbs
12Cyclohexane110-82-74,171 lbs0 lbs4,189 lbs
13Ethylbenzene100-41-43,987 lbs5 lbs4,037 lbs
14Phenol108-95-20 lbs8 lbs2,825 lbs
15Naphthalene91-20-31,359 lbs7 lbs1,445 lbs
161,2,4-Trimethylbenzene95-63-61,267 lbs0 lbs1,408 lbs
17Zinc compoundsN98222 lbs27 lbs1,223 lbs
18Certain glycol ethersN23010 lbs0 lbs1,121 lbs
191,3-Butadiene106-99-0984 lbs0 lbs984 lbs
20Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
21Cumene98-82-8531 lbs0 lbs532 lbs
22Polycyclic aromatic compoundsN590354 lbs55 lbs409 lbs
23Lead And Lead CompoundsN4200 lbs0 lbs404 lbs
24Lead compoundsN4200 lbs0 lbs269 lbs
25Styrene100-42-5110 lbs0 lbs110 lbs
26Biphenyl92-52-433 lbs0 lbs33 lbs
27Manganese7439-96-530 lbs0 lbs30 lbs
28Chlorine7782-50-525 lbs0 lbs25 lbs
29Chromium7440-47-325 lbs0 lbs25 lbs
30Nickel7440-02-024 lbs0 lbs24 lbs
31Mercury And Mercury CompoundsN45821 lbs0 lbs23 lbs
32Isoprene78-79-58 lbs0 lbs8 lbs
33Lead7439-92-10 lbs0 lbs8 lbs
34Mercury7439-97-67 lbs0 lbs7 lbs
35Benzo[g,h,i]perylene191-24-20 lbs5 lbs5 lbs
36Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
37Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs

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