Home > Analysis: 1902 7th St, Galena Park, TX 77547

📊 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

1902 7TH ST GALENA PARK 77547

Building Size

2,031 sqft

Total structure area from HCAD building records.

Elevation

26.61 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: 16.61 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

Very High

Higher pollution than 93% 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)

18.89 million lbs

Extremely High

2894.8x more than typical Houston property
≈ 944 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)

5.85 million lbs

Extremely High

1213.0x 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)

13.03 million lbs

Extremely 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)	18,886,399 lbs	5,849,664 lbs	13,034,393 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	2,651,639 lbs	481,490 lbs	2,052,804 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 93% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).

Top chemicals released near this property (past 10 years):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, n-Hexane, Ammonia, Xylene (mixed isomers)

View the full list of 56 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (56 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	13,016,167	13,016,167
2	Hydrogen cyanide	74-90-8	2,226,566	0	2,226,566
3	n-Hexane	110-54-3	557,662	9	557,749
4	Ammonia	7664-41-7	370,628	8,000	378,628
5	Xylene (mixed isomers)	1330-20-7	345,198	645	345,944
6	Ethylene	74-85-1	309,664	0	309,664
7	Toluene	108-88-3	283,467	209	283,787
8	Benzene	71-43-2	267,813	113	267,955
9	Propylene	115-07-1	248,260	0	248,260
10	1,3-Butadiene	106-99-0	228,213	0	228,213
11	Hydrogen sulfide	7783-06-4	224,124	3,527	227,651
12	Cyclohexane	110-82-7	147,431	0	147,440
13	n-Butyl alcohol	71-36-3	137,606	0	137,606
14	Ozone	10028-15-6	115,228	0	115,228
15	Diethanolamine	111-42-2	101,560	0	101,560
16	Methanol	67-56-1	68,150	0	68,150
17	Ethylbenzene	100-41-4	49,688	70	49,803
18	Propionaldehyde	123-38-6	31,241	0	31,241
19	1,2,4-Trimethylbenzene	95-63-6	23,854	0	24,083
20	Butyraldehyde	123-72-8	22,150	0	22,150
21	Dicyclopentadiene	77-73-6	14,013	0	14,013
22	Isoprene	78-79-5	13,272	0	13,272
23	Naphthalene	91-20-3	9,179	3	9,195
24	Carbon disulfide	75-15-0	8,557	0	8,557
25	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	6,697	0	6,697
26	Cyanide compounds	N106	5,934	45	5,979
27	Molybdenum trioxide	1313-27-5	5,795	0	5,795
28	Polycyclic aromatic compounds	N590	4,518	115	4,835
29	Phenol	108-95-2	1,635	2,959	4,594
30	Manganese	7439-96-5	4,228	0	4,228
31	Cumene	98-82-8	4,081	0	4,088
32	Isobutyraldehyde	78-84-2	4,080	0	4,080
33	Styrene	100-42-5	3,310	0	3,310
34	Zinc compounds	N982	219	1,181	2,891
35	Carbonyl sulfide	463-58-1	1,451	0	1,451
36	Nickel compounds	N495	654	489	1,143
37	Phenanthrene	85-01-8	937	0	937
38	Lead	7439-92-1	489	127	616
39	Vanadium compounds	N770	79	509	588
40	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	461	0	461
41	Biphenyl	92-52-4	345	0	364
42	Cresol (mixed isomers)	1319-77-3	232	0	232
43	Mercury compounds	N458	197	1	199
44	Nickel And Nickel Compounds	N495	66	123	189
45	Cobalt compounds	N096	131	24	155
46	Lead And Lead Compounds	N420	142	12	154
47	Mercury And Mercury Compounds	N458	109	0	109
48	Lead compounds	N420	50	57	107
49	Mercury	7439-97-6	89	0	89
50	Anthracene	120-12-7	75	0	75
51	Cobalt And Cobalt Compounds	N096	42	0	42
52	Antimony compounds	N010	38	0	38
53	Nickel	7440-02-0	35	0	35
54	Benzo[g,h,i]perylene	191-24-2	13	7	20
55	Ethylene glycol	107-21-1	0	0	9
56	tert-Butyl alcohol	75-65-0	7	0	7

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Diethanolamine, Ammonia, n-Hexane

View the full list of 43 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (43 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	2,051,661	2,051,661
2	Hydrogen cyanide	74-90-8	177,459	0	177,459
3	Diethanolamine	111-42-2	10,082	0	85,611
4	Ammonia	7664-41-7	36,776	1,027	46,194
5	n-Hexane	110-54-3	41,524	0	41,595
6	Xylene (mixed isomers)	1330-20-7	34,354	18	34,454
7	1,3-Butadiene	106-99-0	33,109	0	33,109
8	Ozone	10028-15-6	25,701	0	25,701
9	Toluene	108-88-3	24,471	12	24,602
10	Ethylene	74-85-1	23,961	0	23,961
11	Benzene	71-43-2	21,094	6	21,141
12	Zinc compounds	N982	22	32	19,978
13	Hydrogen sulfide	7783-06-4	13,545	0	13,548
14	Propylene	115-07-1	13,037	0	13,037
15	Cyclohexane	110-82-7	11,828	0	11,828
16	Ethylene glycol	107-21-1	0	0	7,019
17	Ethylbenzene	100-41-4	4,258	12	4,311
18	Phenol	108-95-2	164	8	3,009
19	Isoprene	78-79-5	2,371	0	2,371
20	1,2,4-Trimethylbenzene	95-63-6	1,868	0	1,942
21	Molybdenum trioxide	1313-27-5	1,804	0	1,804
22	Certain glycol ethers	N230	0	0	1,111
23	Naphthalene	91-20-3	1,013	0	1,097
24	Carbonyl sulfide	463-58-1	1,041	0	1,041
25	Nickel And Nickel Compounds	N495	0	0	915
26	Lead And Lead Compounds	N420	96	7	901
27	Cumene	98-82-8	559	0	564
28	Polycyclic aromatic compounds	N590	354	15	369
29	Lead compounds	N420	0	0	269
30	Styrene	100-42-5	269	0	269
31	Carbon disulfide	75-15-0	243	0	243
32	Lead	7439-92-1	228	1	242
33	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	101	0	101
34	Cobalt And Cobalt Compounds	N096	42	0	42
35	Phenanthrene	85-01-8	36	0	36
36	Biphenyl	92-52-4	33	0	33
37	Mercury And Mercury Compounds	N458	29	0	31
38	Anthracene	120-12-7	1	0	14
39	Benzo[g,h,i]perylene	191-24-2	8	5	13
40	Mercury	7439-97-6	7	0	7
41	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3
42	Methanol	67-56-1	0	0	2
43	Cresol (mixed isomers)	1319-77-3	1	0	1