Home > Analysis: 224 Garfield Ave, Pasadena, TX 77506

📊 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

224 GARFIELD AVE PASADENA 77506

Building Size

2,369 sqft

Total structure area from HCAD building records.

Elevation

13.34 ft

Height above sea level from USGS data.

FEMA Flood Zone

High Risk - 1% annual chance with established base flood elevation

Overall Risk

Moderate

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

Moderate

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: 3.34 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.

This property is in a high-risk flood zone. Flood insurance is required for mortgages.
Consider flood mitigation measures like elevated utilities and flood vents.
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)

5.56 million lbs

Extremely High

852.9x more than typical Houston property
≈ 278 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)

5.55 million lbs

Extremely High

1151.6x 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)	5,564,278 lbs	5,553,219 lbs	2,879 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	424,772 lbs	299,264 lbs	76 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):

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

View the full list of 49 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (49 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	n-Hexane	110-54-3	1,094,317	170	1,094,907
2	Hydrogen cyanide	74-90-8	1,032,286	0	1,032,286
3	Propylene	115-07-1	465,601	0	465,601
4	Xylene (mixed isomers)	1330-20-7	447,497	756	450,622
5	Methanol	67-56-1	329,619	0	329,619
6	Toluene	108-88-3	315,863	218	316,971
7	Benzene	71-43-2	290,012	138	290,716
8	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
9	Hydrogen sulfide	7783-06-4	244,215	0	244,216
10	Ammonia	7664-41-7	216,283	0	216,283
11	Ethylene	74-85-1	206,072	0	206,072
12	n-Butyl alcohol	71-36-3	137,606	0	137,606
13	Diethanolamine	111-42-2	102,160	0	102,160
14	Vinyl acetate	108-05-4	70,754	0	70,754
15	Cyclohexane	110-82-7	67,575	0	68,344
16	Ethylbenzene	100-41-4	65,915	65	66,582
17	1,3-Butadiene	106-99-0	45,992	0	45,992
18	1,2,4-Trimethylbenzene	95-63-6	32,990	105	33,516
19	Propionaldehyde	123-38-6	31,241	0	31,241
20	Butyraldehyde	123-72-8	22,150	0	22,150
21	Naphthalene	91-20-3	20,385	24	21,740
22	Dicyclopentadiene	77-73-6	14,013	0	14,013
23	Cumene	98-82-8	9,122	10	9,317
24	Dimethylamine	124-40-3	6,912	0	6,912
25	Acetaldehyde	75-07-0	6,116	0	6,116
26	Ethylene glycol	107-21-1	5,553	0	5,562
27	Biphenyl	92-52-4	5,161	0	5,502
28	Isobutyraldehyde	78-84-2	4,080	0	4,080
29	Polycyclic aromatic compounds	N590	2,886	117	3,204
30	Formaldehyde	50-00-0	2,284	0	2,284
31	Acrylonitrile	107-13-1	2,224	0	2,224
32	Phenol	108-95-2	815	1,155	1,970
33	Propylene oxide	75-56-9	1,829	0	1,829
34	Formic acid	64-18-6	1,406	0	1,406
35	Styrene	100-42-5	1,198	0	1,198
36	Hydrogen fluoride	7664-39-3	229	0	299
37	Chlorine	7782-50-5	268	0	268
38	Nickel	7440-02-0	120	0	120
39	Mercury	7439-97-6	106	0	106
40	Certain glycol ethers	N230	92	0	92
41	Manganese	7439-96-5	70	0	70
42	Zinc compounds	N982	0	65	65
43	C.I. Food Red 15	81-88-9	40	0	40
44	Chromium	7440-47-3	40	0	40
45	Lead And Lead Compounds	N420	3	22	25
46	Lead compounds	N420	2	22	23
47	Benzo[g,h,i]perylene	191-24-2	3	7	11
48	Methyl tert-butyl ether	1634-04-4	2	5	10
49	Mercury And Mercury Compounds	N458	1	0	1

Top chemicals released near this property (2024 only):

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

View the full list of 42 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (42 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Diethanolamine	111-42-2	10,092	0	85,621
2	Hydrogen cyanide	74-90-8	73,728	0	73,728
3	n-Hexane	110-54-3	42,605	0	42,638
4	Xylene (mixed isomers)	1330-20-7	38,110	25	38,446
5	Ammonia	7664-41-7	16,612	0	25,674
6	Toluene	108-88-3	23,954	5	24,030
7	Methanol	67-56-1	15,730	0	20,533
8	Benzene	71-43-2	19,916	4	20,032
9	Zinc compounds	N982	0	5	18,755
10	Hydrogen sulfide	7783-06-4	14,345	0	14,345
11	Propylene	115-07-1	10,544	0	10,544
12	Ethylene	74-85-1	9,396	0	9,396
13	Ethylene glycol	107-21-1	529	0	7,568
14	Vinyl acetate	108-05-4	5,850	0	5,852
15	Ethylbenzene	100-41-4	4,409	7	4,455
16	Cyclohexane	110-82-7	4,403	0	4,421
17	1,2,4-Trimethylbenzene	95-63-6	3,367	0	3,508
18	Phenol	108-95-2	255	8	3,101
19	Formaldehyde	50-00-0	255	0	2,348
20	Formic acid	64-18-6	189	0	1,968
21	Naphthalene	91-20-3	1,403	1	1,483
22	Certain glycol ethers	N230	11	0	1,122
23	1,3-Butadiene	106-99-0	956	0	956
24	Nickel And Nickel Compounds	N495	0	0	915
25	Dimethylamine	124-40-3	864	0	884
26	Cumene	98-82-8	555	0	556
27	Lead And Lead Compounds	N420	1	1	391
28	Polycyclic aromatic compounds	N590	353	15	369
29	Acrylonitrile	107-13-1	278	0	294
30	Lead compounds	N420	0	0	269
31	Propylene oxide	75-56-9	255	0	255
32	Styrene	100-42-5	110	0	110
33	Acetaldehyde	75-07-0	45	0	45
34	Biphenyl	92-52-4	33	0	33
35	Manganese	7439-96-5	30	0	30
36	Chromium	7440-47-3	25	0	25
37	Chlorine	7782-50-5	25	0	25
38	Nickel	7440-02-0	24	0	24
39	Lead	7439-92-1	0	0	8
40	Mercury	7439-97-6	7	0	7
41	Benzo[g,h,i]perylene	191-24-2	0	5	5
42	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3