Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 2505 Marshall St, Pasadena, Tx 77506

HCAD #0805190000033
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🌍Environmental Assessment

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.

🌊Flood Risk Analysis
FEMA Zone X
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
2505 Marshall St, Pasadena, Tx 77506
Building Size
1,170sqft
Total structure area from HCAD building records.
Elevation
27.98 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
53.6 acres
18.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$0
Property not flooded. No damage to calculate.
Depth-Damage (Neighborhood)
$0
Property not flooded. No damage to calculate.
Analysis Method
COG Combined 5000 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: 0 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.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
15.3th percentile
Property Pollution Ranking
High
Higher pollution than 85% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
2.14 millionlbs
Extremely High
328.0x more than typical Houston property
≈ 107 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.13 millionlbs
Extremely High
442.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
7 thousandlbs
Very High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
11
Industrial facilities within 2 miles
💡
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)2,139,780 lbs2,132,402 lbs7,378 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)176,814 lbs176,318 lbs496 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 85% 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 chemicals released near this property (past 10 years):
Ethylene, n-Hexane, Methanol, Ammonia, Vinyl acetate
View the full list of 45 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(45 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ethylene74-85-11,059,949 lbs0 lbs1,059,949 lbs
2n-Hexane110-54-3403,294 lbs170 lbs403,465 lbs
3Methanol67-56-1271,372 lbs0 lbs271,372 lbs
4Ammonia7664-41-792,863 lbs0 lbs92,863 lbs
5Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
6Toluene108-88-353,613 lbs27 lbs53,649 lbs
7Xylene (mixed isomers)1330-20-748,626 lbs33 lbs48,668 lbs
81,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
9Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
10Zinc compoundsN9827,485 lbs6,851 lbs14,336 lbs
11Benzene71-43-211,221 lbs24 lbs11,247 lbs
12Ethylbenzene100-41-46,973 lbs22 lbs6,997 lbs
13Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
14Chlorine7782-50-56,477 lbs0 lbs6,477 lbs
15Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,281 lbs0 lbs5,281 lbs
17Phenol108-95-25,163 lbs0 lbs5,163 lbs
18Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
19Ethylene glycol107-21-12,254 lbs0 lbs2,254 lbs
20Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
21o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
22Cumene98-82-81,949 lbs10 lbs1,960 lbs
23Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
24Formic acid64-18-61,406 lbs0 lbs1,406 lbs
25Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
26Maleic anhydride108-31-61,046 lbs0 lbs1,046 lbs
27Naphthalene91-20-31,012 lbs21 lbs1,034 lbs
28Cyclohexane110-82-7995 lbs0 lbs995 lbs
291,3-Butadiene106-99-0312 lbs0 lbs312 lbs
30Lead compoundsN420288 lbs22 lbs309 lbs
31Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
32Diethanolamine111-42-2205 lbs0 lbs205 lbs
33Nickel7440-02-0120 lbs31 lbs151 lbs
341,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
351,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
36Diphenylamine122-39-4126 lbs0 lbs126 lbs
37Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
38Lead And Lead CompoundsN42055 lbs22 lbs78 lbs
39Chromium7440-47-340 lbs33 lbs73 lbs
40Manganese7439-96-570 lbs0 lbs70 lbs
41Certain glycol ethersN23012 lbs0 lbs12 lbs
42Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
43Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
44Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
45Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ethylene, Methanol, n-Hexane, Ammonia, Vinyl acetate
View the full list of 38 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(38 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1114,658 lbs0 lbs114,658 lbs
2Methanol67-56-115,808 lbs0 lbs15,808 lbs
3n-Hexane110-54-312,725 lbs0 lbs12,725 lbs
4Ammonia7664-41-76,678 lbs0 lbs6,678 lbs
5Vinyl acetate108-05-45,850 lbs0 lbs5,850 lbs
61,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,078 lbs
7Xylene (mixed isomers)1330-20-73,736 lbs5 lbs3,741 lbs
8Toluene108-88-33,102 lbs3 lbs3,105 lbs
9Phenol108-95-22,206 lbs0 lbs2,206 lbs
10Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
11Zinc compoundsN982678 lbs476 lbs1,154 lbs
12Benzene71-43-21,130 lbs2 lbs1,132 lbs
13Dimethylamine124-40-3864 lbs0 lbs864 lbs
14Chlorine7782-50-5487 lbs0 lbs487 lbs
15Ethylbenzene100-41-4427 lbs3 lbs430 lbs
16Formaldehyde50-00-0354 lbs0 lbs354 lbs
171,3-Butadiene106-99-0295 lbs0 lbs295 lbs
18Acrylonitrile107-13-1278 lbs0 lbs278 lbs
19Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
20Propylene oxide75-56-9255 lbs0 lbs255 lbs
21Cyclohexane110-82-7232 lbs0 lbs232 lbs
22Cumene98-82-8208 lbs0 lbs208 lbs
23Formic acid64-18-6189 lbs0 lbs189 lbs
24Naphthalene91-20-3132 lbs1 lbs133 lbs
25Maleic anhydride108-31-6132 lbs0 lbs132 lbs
26Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
27o-Cresol95-48-788 lbs0 lbs88 lbs
28Acetaldehyde75-07-045 lbs0 lbs45 lbs
29Manganese7439-96-530 lbs0 lbs30 lbs
30Ethylene glycol107-21-130 lbs0 lbs30 lbs
31Chromium7440-47-325 lbs2 lbs27 lbs
32Nickel7440-02-024 lbs2 lbs26 lbs
33Diphenylamine122-39-423 lbs0 lbs23 lbs
34Lead And Lead CompoundsN4208 lbs1 lbs9 lbs
351,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
36Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
37Certain glycol ethersN2301 lbs0 lbs1 lbs
38Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs
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