Home > Analysis: 1116 Grace St, Deer Park, TX 77536 09/30/2025

📊 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

1116 GRACE ST DEER PARK 77536

Building Size

2,576 sqft

Total structure area from HCAD building records.

Elevation

26.93 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: 16.93 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 94% 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)

26.36 million lbs

Extremely High

4039.8x more than typical Houston property
≈ 1.3K 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)

13.79 million lbs

Extremely High

2859.3x 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)

12.15 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)	26,356,857 lbs	13,788,547 lbs	12,146,754 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	2,933,871 lbs	1,637,921 lbs	753,768 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 94% 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), Ethylene, Propylene, Ammonia, 1,3-Butadiene

View the full list of 97 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (97 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	11,772,529	11,772,529
2	Ethylene	74-85-1	2,978,199	0	2,978,199
3	Propylene	115-07-1	2,531,980	0	2,531,980
4	Ammonia	7664-41-7	765,194	12,603	1,199,277
5	1,3-Butadiene	106-99-0	1,021,400	45	1,021,445
6	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	1,016,215	0	1,016,215
7	Cumene	98-82-8	851,544	882	852,426
8	n-Hexane	110-54-3	697,883	10	697,893
9	Phenol	108-95-2	634,156	1,108	635,264
10	Toluene	108-88-3	510,897	199	511,096
11	Methanol	67-56-1	309,738	133,638	443,376
12	Benzene	71-43-2	434,346	242	434,588
13	Xylene (mixed isomers)	1330-20-7	255,366	179	255,545
14	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	234,060	0	234,060
15	Hydrogen sulfide	7783-06-4	211,383	2,545	213,928
16	Vinyl chloride	75-01-4	166,484	46	166,529
17	Hydrogen cyanide	74-90-8	127,097	2,741	129,838
18	4,4'-Isopropylidenediphenol	80-05-7	125,700	0	125,700
19	1,2-Dichloroethane	107-06-2	125,688	0	125,688
20	Epichlorohydrin	106-89-8	121,011	3,811	124,822
21	Sodium nitrite	7632-00-0	0	102,300	102,300
22	Acetonitrile	75-05-8	83,752	12,219	95,971
23	Ethylbenzene	100-41-4	73,430	222	73,652
24	Acetaldehyde	75-07-0	70,863	1,398	72,261
25	Zinc compounds	N982	7,165	63,922	71,088
26	Isoprene	78-79-5	70,540	137	70,677
27	Propylene oxide	75-56-9	53,747	0	53,747
28	Ethylene glycol	107-21-1	31,251	9,387	40,638
29	Diethanolamine	111-42-2	35,781	0	35,781
30	Cyclohexane	110-82-7	26,201	284	26,485
31	Naphthalene	91-20-3	21,426	206	21,632
32	Dichloromethane	75-09-2	19,581	39	19,620
33	Butyl acrylate	141-32-2	18,363	0	18,363
34	Formaldehyde	50-00-0	16,402	0	16,402
35	Chlorobenzene	108-90-7	16,113	0	16,113
36	Chloroethane	75-00-3	13,659	0	13,659
37	Maleic anhydride	108-31-6	12,243	0	12,243
38	Chlorine	7782-50-5	11,978	0	11,978
39	Cumene hydroperoxide	80-15-9	11,006	0	11,006
40	Trade Secret	TRD SECRT	9,705	0	9,705
41	1,2,4-Trimethylbenzene	95-63-6	8,919	0	8,919
42	Dicyclopentadiene	77-73-6	8,670	0	8,670
43	Acetophenone	98-86-2	6,714	1,462	8,176
44	Allyl alcohol	107-18-6	7,427	626	8,053
45	sec-Butyl alcohol	78-92-2	1,946	5,600	7,546
46	Glycidol	556-52-5	2,841	4,410	7,251
47	Manganese compounds	N450	137	5,037	5,174
48	Methyl isobutyl ketone	108-10-1	4,714	2	4,716
49	Tetrachloroethylene	127-18-4	4,241	176	4,417
50	Diisocyanates	N120	4,282	0	4,282
51	Nickel compounds	N495	80	3,764	3,844
52	Styrene	100-42-5	3,800	16	3,816
53	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	N040	0	1,936	1,936
54	Lead compounds	N420	509	1,376	1,886
55	Phenanthrene	85-01-8	1,547	159	1,706
56	1,1,2-Trichloroethane	79-00-5	1,537	0	1,537
57	Certain glycol ethers	N230	1,422	0	1,422
58	Nonylphenol Ethoxylates	N535	1,381	0	1,381
59	Bis(2-chloroethyl) ether	111-44-4	950	0	950
60	Polycyclic aromatic compounds	N590	576	130	782
61	Lead And Lead Compounds	N420	267	421	689
62	Chloroform	67-66-3	638	0	638
63	Anthracene	120-12-7	534	70	604
64	Trichloroethylene	79-01-6	603	0	603
65	Cresol (mixed isomers)	1319-77-3	430	146	576
66	Aluminum (fume or dust)	7429-90-5	462	0	462
67	Acrylic acid	79-10-7	348	0	348
68	Chloromethane	74-87-3	326	0	326
69	Pentachloroethane	76-01-7	323	0	323
70	Mercury compounds	N458	105	212	317
71	Nitric acid	7697-37-2	309	0	309
72	Mercury And Mercury Compounds	N458	36	195	230
73	1,1,2,2-Tetrachloroethane	79-34-5	219	0	219
74	Benzo[g,h,i]perylene	191-24-2	96	74	170
75	Cobalt compounds	N096	33	89	122
76	Barium And Barium Compounds	N040	0	99	99
77	Carbon disulfide	75-15-0	84	0	84
78	1,2-Dichloroethylene	540-59-0	75	0	75
79	Nonylphenol	N530	61	0	61
80	Chloroprene	126-99-8	55	0	55
81	Methyl acrylate	96-33-3	47	0	47
82	Ethylidene dichloride	75-34-3	37	0	37
83	Cobalt And Cobalt Compounds	N096	12	24	36
84	Ethyl acrylate	140-88-5	35	0	35
85	Triethylamine	121-44-8	34	0	34
86	Dioxin and dioxin-like compounds	N150	8	23	31
87	Carbon tetrachloride	56-23-5	27	0	27
88	Methyl methacrylate	80-62-6	25	0	25
89	Diphenylamine	122-39-4	10	14	24
90	Hexachloroethane	67-72-1	16	0	16
91	Vinylidene chloride	75-35-4	15	0	15
92	Boron trifluoride	7637-07-2	11	0	11
93	Propionaldehyde	123-38-6	8	0	8
94	trans-1,4-Dichloro-2-butene	110-57-6	7	0	7
95	Hexachlorobenzene	118-74-1	5	0	5
96	N-Methyl-2-pyrrolidone	872-50-4	3	0	3
97	Acetamide	60-35-5	2	0	2

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene, Ammonia, Propylene, 1,3-Butadiene

View the full list of 79 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (79 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	700,421	700,421
2	Ethylene	74-85-1	629,568	0	629,568
3	Ammonia	7664-41-7	65,506	1,830	462,173
4	Propylene	115-07-1	296,445	0	296,445
5	1,3-Butadiene	106-99-0	108,643	9	108,652
6	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	97,000	0	97,000
7	4,4'-Isopropylidenediphenol	80-05-7	10,300	0	89,800
8	n-Hexane	110-54-3	65,206	10	66,558
9	Toluene	108-88-3	51,687	10	54,042
10	Cumene	98-82-8	52,712	31	52,743
11	Methanol	67-56-1	14,597	27,174	47,222
12	Phenol	108-95-2	40,343	254	42,761
13	Benzene	71-43-2	39,601	7	41,770
14	Hydrogen sulfide	7783-06-4	38,758	289	39,047
15	Xylene (mixed isomers)	1330-20-7	18,400	10	20,108
16	Zinc compounds	N982	443	9,562	18,421
17	Hydrogen cyanide	74-90-8	13,000	70	13,070
18	Diethanolamine	111-42-2	3,059	0	12,859
19	Lead compounds	N420	93	169	12,855
20	Epichlorohydrin	106-89-8	12,291	331	12,622
21	Nickel compounds	N495	0	218	11,929
22	Vinyl chloride	75-01-4	11,013	3	11,016
23	Dichloromethane	75-09-2	9,911	10	9,922
24	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	9,252	0	9,252
25	1,2-Dichloroethane	107-06-2	8,530	0	8,530
26	Acetonitrile	75-05-8	4,900	3,100	8,000
27	Trade Secret	TRD SECRT	5,677	0	5,677
28	Ethylbenzene	100-41-4	4,620	7	5,262
29	Sodium nitrite	7632-00-0	0	4,600	4,600
30	Naphthalene	91-20-3	2,290	22	4,044
31	Acetaldehyde	75-07-0	3,861	161	4,022
32	Polycyclic aromatic compounds	N590	12	14	4,011
33	Glycidol	556-52-5	1,002	2,400	3,402
34	Formaldehyde	50-00-0	3,363	0	3,363
35	Cyclohexane	110-82-7	2,424	17	3,336
36	sec-Butyl alcohol	78-92-2	540	2,100	2,640
37	Isoprene	78-79-5	2,360	16	2,376
38	Diisocyanates	N120	1,843	0	1,843
39	Ethyl acrylate	140-88-5	6	0	1,809
40	Ethylene glycol	107-21-1	1,527	0	1,527
41	Chloroethane	75-00-3	1,450	0	1,450
42	Styrene	100-42-5	1,160	2	1,371
43	Maleic anhydride	108-31-6	701	0	701
44	Acetophenone	98-86-2	188	510	698
45	Butyl acrylate	141-32-2	597	0	597
46	1,2,4-Trimethylbenzene	95-63-6	546	0	546
47	Dicyclopentadiene	77-73-6	493	0	503
48	Manganese compounds	N450	37	350	387
49	Cumene hydroperoxide	80-15-9	384	0	384
50	Nonylphenol	N530	2	0	374
51	Benzo[g,h,i]perylene	191-24-2	0	1	372
52	Certain glycol ethers	N230	326	0	326
53	Chlorine	7782-50-5	311	0	311
54	Tetrachloroethylene	127-18-4	282	4	286
55	1,1,2-Trichloroethane	79-00-5	166	0	166
56	Acrylic acid	79-10-7	127	0	127
57	Bis(2-chloroethyl) ether	111-44-4	96	0	96
58	Mercury compounds	N458	0	53	54
59	Dioxin and dioxin-like compounds	N150	1	0	53
60	Methyl isobutyl ketone	108-10-1	0	0	44
61	Chloroform	67-66-3	44	0	44
62	Trichloroethylene	79-01-6	43	0	43
63	Lead	7439-92-1	0	0	38
64	Pentachloroethane	76-01-7	36	0	36
65	Mercury And Mercury Compounds	N458	17	0	32
66	Nitric acid	7697-37-2	31	0	31
67	Aluminum (fume or dust)	7429-90-5	26	0	26
68	1,1,2,2-Tetrachloroethane	79-34-5	24	0	24
69	Chlorobenzene	108-90-7	14	0	14
70	Carbon disulfide	75-15-0	12	0	12
71	Phenanthrene	85-01-8	6	1	7
72	1,2-Dichloroethylene	540-59-0	5	0	5
73	Carbon tetrachloride	56-23-5	4	0	4
74	Chloroprene	126-99-8	3	0	3
75	Hexachloroethane	67-72-1	2	0	2
76	Anthracene	120-12-7	1	1	2
77	Ethylidene dichloride	75-34-3	1	0	1
78	Propylene oxide	75-56-9	1	0	1
79	Hexachlorobenzene	118-74-1	1	0	1