Home > Analysis: 1000 W Thomas Ave, Pasadena, TX 77506 03/27/2025

📊 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

1000 W THOMAS AVE PASADENA 77506

Building Size

1,368 sqft

Total structure area from HCAD building records.

Elevation

25.91 ft

Height above sea level from USGS data.

FEMA Flood Zone

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)

Property not flooded at current water level. No damage to calculate.

Depth-Damage Estimate (Neighborhood Comparison)

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: 15.91 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)

6.09 million lbs

Extremely High

933.0x 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

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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	6,087,235 lbs	6,073,251 lbs	4,488 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	446,085 lbs	346,970 lbs	246 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

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)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Propylene	115-07-1	1,208,542	0	1,208,542
2	Hydrogen cyanide	74-90-8	1,032,286	0	1,032,286
3	n-Hexane	110-54-3	1,025,204	0	1,025,623
4	Ammonia	7664-41-7	654,067	0	654,067
5	Xylene (mixed isomers)	1330-20-7	392,004	723	395,087
6	Ethylene	74-85-1	370,774	0	370,774
7	Benzene	71-43-2	280,782	477	281,823
8	Toluene	108-88-3	276,239	260	277,380
9	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	250,113	0	250,113
10	Hydrogen sulfide	7783-06-4	244,215	0	244,216
11	Diethanolamine	111-42-2	102,160	0	102,160
12	Cyclohexane	110-82-7	66,577	0	67,345
13	Ethylbenzene	100-41-4	60,168	102	60,870
14	1,3-Butadiene	106-99-0	50,685	0	50,685
15	Naphthalene	91-20-3	20,014	75	21,419
16	1,2,4-Trimethylbenzene	95-63-6	11,040	0	11,314
17	Cumene	98-82-8	8,769	0	8,953
18	Biphenyl	92-52-4	5,161	0	5,502
19	Ethylene glycol	107-21-1	5,255	0	5,264
20	Polycyclic aromatic compounds	N590	2,887	525	3,613
21	Methanol	67-56-1	3,468	0	3,468
22	Zinc compounds	N982	219	1,116	2,826
23	Styrene	100-42-5	1,319	0	1,319
24	Phenol	108-95-2	0	1,155	1,155
25	Hydrogen fluoride	7664-39-3	229	0	299
26	Chlorine	7782-50-5	268	0	268
27	Mercury compounds	N458	165	1	166
28	Nickel	7440-02-0	120	0	120
29	Mercury	7439-97-6	106	0	106
30	Mercury And Mercury Compounds	N458	97	0	97
31	Certain glycol ethers	N230	80	0	80
32	Manganese	7439-96-5	70	0	70
33	Isoprene	78-79-5	60	0	60
34	Lead compounds	N420	6	46	52
35	Chromium	7440-47-3	40	0	40
36	C.I. Food Red 15	81-88-9	40	0	40
37	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	11	0	11
38	Benzo[g,h,i]perylene	191-24-2	3	7	11
39	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	8	0	8
40	Lead And Lead Compounds	N420	2	1	3

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)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Diethanolamine	111-42-2	10,092	0	85,621
2	Ammonia	7664-41-7	75,153	0	83,460
3	Hydrogen cyanide	74-90-8	73,728	0	73,728
4	n-Hexane	110-54-3	38,376	0	38,409
5	Propylene	115-07-1	34,344	0	34,344
6	Xylene (mixed isomers)	1330-20-7	31,993	20	32,334
7	Benzene	71-43-2	18,893	112	19,577
8	Toluene	108-88-3	19,329	6	19,437
9	Ethylene	74-85-1	17,246	0	17,246
10	Hydrogen sulfide	7783-06-4	14,345	0	14,345
11	Ethylene glycol	107-21-1	500	0	7,519
12	Cyclohexane	110-82-7	4,171	0	4,189
13	Ethylbenzene	100-41-4	3,987	5	4,037
14	Phenol	108-95-2	0	8	2,825
15	Naphthalene	91-20-3	1,359	7	1,445
16	1,2,4-Trimethylbenzene	95-63-6	1,267	0	1,408
17	Zinc compounds	N982	22	27	1,223
18	Certain glycol ethers	N230	10	0	1,121
19	1,3-Butadiene	106-99-0	984	0	984
20	Nickel And Nickel Compounds	N495	0	0	915
21	Cumene	98-82-8	531	0	532
22	Polycyclic aromatic compounds	N590	354	55	409
23	Lead And Lead Compounds	N420	0	0	404
24	Lead compounds	N420	0	0	269
25	Styrene	100-42-5	110	0	110
26	Biphenyl	92-52-4	33	0	33
27	Manganese	7439-96-5	30	0	30
28	Chlorine	7782-50-5	25	0	25
29	Chromium	7440-47-3	25	0	25
30	Nickel	7440-02-0	24	0	24
31	Mercury And Mercury Compounds	N458	21	0	23
32	Isoprene	78-79-5	8	0	8
33	Lead	7439-92-1	0	0	8
34	Mercury	7439-97-6	7	0	7
35	Benzo[g,h,i]perylene	191-24-2	0	5	5
36	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3
37	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	2	0	3