Home > Analysis: 1216 W Hart Ave, Pasadena, TX 77506 10/17/2025

📊 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

1216 W HART AVE PASADENA 77506

Building Size

1,186 sqft

Total structure area from HCAD building records.

Elevation

25.65 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: 15.65 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 88% 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)

4.12 million lbs

Extremely High

631.5x more than typical Houston property
≈ 206 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)

4.12 million lbs

Extremely High

853.6x 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)

3 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)	4,119,871 lbs	4,116,375 lbs	3,154 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	421,338 lbs	324,573 lbs	200 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 88% 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, Ammonia, n-Hexane, Ethylene

View the full list of 30 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (30 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Propylene	115-07-1	936,912	0	936,912
2	Hydrogen cyanide	74-90-8	818,552	0	818,552
3	Ammonia	7664-41-7	631,062	0	631,062
4	n-Hexane	110-54-3	395,710	0	395,717
5	Ethylene	74-85-1	292,319	0	292,319
6	Xylene (mixed isomers)	1330-20-7	231,926	627	232,583
7	Hydrogen sulfide	7783-06-4	206,443	0	206,443
8	Benzene	71-43-2	205,652	457	206,120
9	Toluene	108-88-3	169,716	244	169,984
10	Diethanolamine	111-42-2	102,160	0	102,160
11	Cyclohexane	110-82-7	52,501	0	52,510
12	Ethylbenzene	100-41-4	28,148	63	28,219
13	1,3-Butadiene	106-99-0	21,614	0	21,614
14	Ethylene glycol	107-21-1	5,255	0	5,264
15	Naphthalene	91-20-3	4,762	75	4,845
16	1,2,4-Trimethylbenzene	95-63-6	3,713	0	3,727
17	Polycyclic aromatic compounds	N590	2,865	525	3,592
18	Methanol	67-56-1	3,468	0	3,468
19	Cumene	98-82-8	1,656	0	1,658
20	Styrene	100-42-5	1,319	0	1,319
21	Phenol	108-95-2	0	1,155	1,155
22	Biphenyl	92-52-4	345	0	364
23	Certain glycol ethers	N230	80	0	80
24	Mercury	7439-97-6	77	0	77
25	Isoprene	78-79-5	60	0	60
26	C.I. Food Red 15	81-88-9	40	0	40
27	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	11	0	11
28	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	8	0	8
29	Benzo[g,h,i]perylene	191-24-2	0	7	7
30	Lead compounds	N420	1	0	1

Top chemicals released near this property (2024 only):

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

View the full list of 30 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (30 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	73,883	0	82,157
3	Hydrogen cyanide	74-90-8	73,728	0	73,728
4	n-Hexane	110-54-3	35,588	0	35,588
5	Propylene	115-07-1	33,225	0	33,225
6	Xylene (mixed isomers)	1330-20-7	26,894	10	26,920
7	Ethylene	74-85-1	16,725	0	16,725
8	Benzene	71-43-2	15,721	110	16,310
9	Toluene	108-88-3	16,108	4	16,165
10	Hydrogen sulfide	7783-06-4	13,422	0	13,422
11	Ethylene glycol	107-21-1	500	0	7,519
12	Cyclohexane	110-82-7	4,048	0	4,048
13	Phenol	108-95-2	0	8	2,825
14	Ethylbenzene	100-41-4	2,726	1	2,734
15	Certain glycol ethers	N230	10	0	1,121
16	Nickel And Nickel Compounds	N495	0	0	915
17	Naphthalene	91-20-3	763	7	831
18	Polycyclic aromatic compounds	N590	354	55	409
19	1,2,4-Trimethylbenzene	95-63-6	305	0	308
20	Cumene	98-82-8	293	0	293
21	Lead compounds	N420	0	0	269
22	Styrene	100-42-5	110	0	110
23	Biphenyl	92-52-4	33	0	33
24	1,3-Butadiene	106-99-0	28	0	28
25	Isoprene	78-79-5	8	0	8
26	Lead	7439-92-1	0	0	8
27	Mercury	7439-97-6	7	0	7
28	Benzo[g,h,i]perylene	191-24-2	0	5	5
29	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3
30	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	2	0	3