Home > Analysis: 1801 1st St, Galena Park, TX 77547 12/05/2024

📊 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

1801 1ST ST GALENA PARK 77547

Building Size

1,716 sqft

Total structure area from HCAD building records.

Elevation

25.81 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: 15.81 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)

20.87 million lbs

Extremely High

3199.1x more than typical Houston property
≈ 1.0K 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)

7.83 million lbs

Extremely High

1623.2x 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)	20,872,125 lbs	7,827,557 lbs	13,034,562 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	2,675,334 lbs	504,056 lbs	2,052,822 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, Propylene, Xylene (mixed isomers)

View the full list of 60 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (60 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	2,440,300	0	2,440,300
3	n-Hexane	110-54-3	1,203,157	9	1,203,656
4	Propylene	115-07-1	519,890	0	519,890
5	Xylene (mixed isomers)	1330-20-7	505,276	741	508,448
6	Ammonia	7664-41-7	393,633	8,000	401,633
7	Toluene	108-88-3	389,990	225	391,183
8	Ethylene	74-85-1	388,119	0	388,119
9	Benzene	71-43-2	342,942	133	343,658
10	Hydrogen sulfide	7783-06-4	261,896	3,527	265,424
11	1,3-Butadiene	106-99-0	257,284	0	257,284
12	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	256,810	0	256,810
13	Cyclohexane	110-82-7	161,507	0	162,276
14	n-Butyl alcohol	71-36-3	137,606	0	137,606
15	Ozone	10028-15-6	115,228	0	115,228
16	Diethanolamine	111-42-2	102,160	0	102,160
17	Ethylbenzene	100-41-4	81,708	109	82,454
18	Methanol	67-56-1	68,150	0	68,150
19	1,2,4-Trimethylbenzene	95-63-6	31,181	0	31,670
20	Propionaldehyde	123-38-6	31,241	0	31,241
21	Naphthalene	91-20-3	24,431	3	25,769
22	Butyraldehyde	123-72-8	22,150	0	22,150
23	Dicyclopentadiene	77-73-6	14,013	0	14,013
24	Isoprene	78-79-5	13,272	0	13,272
25	Cumene	98-82-8	11,194	0	11,383
26	Carbon disulfide	75-15-0	8,557	0	8,557
27	Cyanide compounds	N106	5,934	45	5,979
28	Molybdenum trioxide	1313-27-5	5,795	0	5,795
29	Biphenyl	92-52-4	5,161	0	5,502
30	Ethylene glycol	107-21-1	5,255	0	5,264
31	Polycyclic aromatic compounds	N590	4,540	115	4,856
32	Phenol	108-95-2	1,635	2,959	4,594
33	Manganese	7439-96-5	4,228	0	4,228
34	Isobutyraldehyde	78-84-2	4,080	0	4,080
35	Styrene	100-42-5	3,310	0	3,310
36	Zinc compounds	N982	219	1,181	2,891
37	Carbonyl sulfide	463-58-1	1,451	0	1,451
38	Nickel compounds	N495	654	489	1,143
39	Phenanthrene	85-01-8	937	0	937
40	Vanadium compounds	N770	79	509	588
41	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	461	0	461
42	Lead	7439-92-1	260	126	386
43	Hydrogen fluoride	7664-39-3	229	0	299
44	Chlorine	7782-50-5	268	0	268
45	Cresol (mixed isomers)	1319-77-3	232	0	232
46	Mercury compounds	N458	197	1	199
47	Nickel And Nickel Compounds	N495	66	123	189
48	Cobalt compounds	N096	131	24	155
49	Lead And Lead Compounds	N420	142	12	154
50	Mercury And Mercury Compounds	N458	109	0	109
51	Lead compounds	N420	50	57	107
52	Mercury	7439-97-6	106	0	106
53	Certain glycol ethers	N230	80	0	80
54	Anthracene	120-12-7	75	0	75
55	Cobalt And Cobalt Compounds	N096	42	0	42
56	C.I. Food Red 15	81-88-9	40	0	40
57	Antimony compounds	N010	38	0	38
58	Nickel	7440-02-0	35	0	35
59	Benzo[g,h,i]perylene	191-24-2	16	7	24
60	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 44 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (44 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	10,092	0	85,621
4	Ammonia	7664-41-7	38,046	1,027	47,497
5	n-Hexane	110-54-3	44,312	0	44,416
6	Xylene (mixed isomers)	1330-20-7	39,453	28	39,868
7	1,3-Butadiene	106-99-0	34,065	0	34,065
8	Toluene	108-88-3	27,692	14	27,874
9	Ozone	10028-15-6	25,701	0	25,701
10	Ethylene	74-85-1	24,482	0	24,482
11	Benzene	71-43-2	24,266	8	24,408
12	Zinc compounds	N982	22	32	19,978
13	Hydrogen sulfide	7783-06-4	14,468	0	14,471
14	Propylene	115-07-1	14,156	0	14,156
15	Cyclohexane	110-82-7	11,951	0	11,969
16	Ethylene glycol	107-21-1	500	0	7,519
17	Ethylbenzene	100-41-4	5,519	16	5,614
18	1,2,4-Trimethylbenzene	95-63-6	2,830	0	3,042
19	Phenol	108-95-2	164	8	3,009
20	Isoprene	78-79-5	2,371	0	2,371
21	Molybdenum trioxide	1313-27-5	1,804	0	1,804
22	Naphthalene	91-20-3	1,609	0	1,711
23	Lead And Lead Compounds	N420	96	7	1,291
24	Certain glycol ethers	N230	10	0	1,121
25	Carbonyl sulfide	463-58-1	1,041	0	1,041
26	Nickel And Nickel Compounds	N495	0	0	915
27	Cumene	98-82-8	797	0	803
28	Polycyclic aromatic compounds	N590	354	15	369
29	Styrene	100-42-5	269	0	269
30	Lead compounds	N420	0	0	269
31	Carbon disulfide	75-15-0	243	0	243
32	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	101	0	101
33	Cobalt And Cobalt Compounds	N096	42	0	42
34	Phenanthrene	85-01-8	36	0	36
35	Biphenyl	92-52-4	33	0	33
36	Mercury And Mercury Compounds	N458	29	0	31
37	Chlorine	7782-50-5	25	0	25
38	Anthracene	120-12-7	1	0	14
39	Benzo[g,h,i]perylene	191-24-2	8	5	13
40	Lead	7439-92-1	0	0	8
41	Mercury	7439-97-6	7	0	7
42	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3
43	Methanol	67-56-1	0	0	2
44	Cresol (mixed isomers)	1319-77-3	1	0	1