Complete Property Analysis

Environmental risk, tax analysis, and property details for 4155 La Porte Fwy, Pasadena, TX 77536

HCAD #0402180010147

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🌍Environmental Assessment

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.

🌊Flood Risk Analysis

FEMA Zone X

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

4155 La Porte Fwy, Pasadena, TX 77536

Elevation

25.9 ft

Height above sea level from USGS data.

FEMA Flood Zone

Moderate to Low Risk - Outside 500-year floodplain

Overall Risk

Very High

Property flooded at 9.84ft depth.

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 High

Flood Depth

9.84 ft±0.5 ft

Depth of water above ground level.

Water Surface Elevation (WSE)

35.74 ft

Water surface elevation relative to sea level (NAVD88 datum).

Area Inundated

215.5 acres

73.1% of 500m radius flooded.

Nearest Bayou Stage

N/A

No nearby bayou within monitoring range

Depth-Damage (HCAD Valuation)

Vacant lot (no building data).

Depth-Damage (Neighborhood)

Vacant lot (no building data).

Analysis Method

COG Combined 5000 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.

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.

Minimal flood hazard area - property outside mapped high-risk zones

Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas

Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries

Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information

🏭Industrial Pollution Exposure

5.9th percentile

Property Pollution Ranking

Very High

Higher pollution than 94% of Houston homes

Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.

Industrial Pollution Nearby (10 Years)

20.97 millionlbs

Extremely High

3213.6x more than typical Houston property

≈ 1.0K dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

13.07 millionlbs

Extremely High

2709.5x more than typical Houston property

Includes fugitive emissions (leaks) and stack emissions (smokestacks).

Water Pollution (10 Years)

7.9 millionlbs

Extremely High

Discharges to bayous, streams, and drainage systems.

Facilities Nearby

Industrial facilities within 2 miles

💡

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)	20,966,512 lbs	13,066,008 lbs	7,900,504 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	1,927,261 lbs	1,595,846 lbs	331,389 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, Cumene, Propylene, 1,3-Butadiene
View the full list of 105 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(105 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 lbs	7,511,077 lbs	7,511,077 lbs
2	Ethylene	74-85-1	2,198,039 lbs	0 lbs	2,198,039 lbs
3	Cumene	98-82-8	1,369,357 lbs	883 lbs	1,370,240 lbs
4	Propylene	115-07-1	1,278,869 lbs	0 lbs	1,278,869 lbs
5	1,3-Butadiene	106-99-0	1,022,464 lbs	45 lbs	1,022,509 lbs
6	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	1,016,311 lbs	0 lbs	1,016,311 lbs
7	Phenol	108-95-2	646,875 lbs	1,112 lbs	647,987 lbs
8	Benzene	71-43-2	600,191 lbs	245 lbs	600,436 lbs
9	Methanol	67-56-1	448,006 lbs	141,201 lbs	589,207 lbs
10	Toluene	108-88-3	550,547 lbs	729 lbs	551,311 lbs
11	Ammonia	7664-41-7	473,403 lbs	14,832 lbs	488,236 lbs
12	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	387,411 lbs	0 lbs	387,411 lbs
13	Ethylene glycol	107-21-1	375,556 lbs	9,387 lbs	384,943 lbs
14	n-Hexane	110-54-3	295,603 lbs	61 lbs	295,704 lbs
15	Xylene (mixed isomers)	1330-20-7	268,885 lbs	179 lbs	269,064 lbs
16	Acetophenone	98-86-2	213,206 lbs	5,107 lbs	218,312 lbs
17	Hydrogen sulfide	7783-06-4	211,384 lbs	2,545 lbs	213,929 lbs
18	Vinyl chloride	75-01-4	211,399 lbs	14 lbs	211,413 lbs
19	Aluminum (fume or dust)	7429-90-5	132,790 lbs	0 lbs	132,800 lbs
20	Hydrogen cyanide	74-90-8	126,501 lbs	2,741 lbs	129,242 lbs
21	1,2-Dichloroethane	107-06-2	125,815 lbs	0 lbs	125,815 lbs
22	4,4'-Isopropylidenediphenol	80-05-7	125,700 lbs	0 lbs	125,700 lbs
23	Epichlorohydrin	106-89-8	121,011 lbs	3,811 lbs	124,822 lbs
24	Acetaldehyde	75-07-0	99,060 lbs	4,079 lbs	103,139 lbs
25	Sodium nitrite	7632-00-0	0 lbs	102,300 lbs	102,300 lbs
26	Acetonitrile	75-05-8	83,752 lbs	12,219 lbs	95,971 lbs
27	Ethylbenzene	100-41-4	78,682 lbs	222 lbs	78,904 lbs
28	Zinc compounds	N982	8,759 lbs	62,074 lbs	70,847 lbs
29	Isoprene	78-79-5	69,617 lbs	137 lbs	69,754 lbs
30	Propylene oxide	75-56-9	53,747 lbs	0 lbs	53,747 lbs
31	Cyclohexane	110-82-7	48,139 lbs	335 lbs	48,524 lbs
32	Certain glycol ethers	N230	37,277 lbs	0 lbs	37,277 lbs
33	Diethanolamine	111-42-2	35,724 lbs	0 lbs	35,724 lbs
34	o-Toluidine	95-53-4	29,521 lbs	51 lbs	30,113 lbs
35	Isobutyraldehyde	78-84-2	28,404 lbs	0 lbs	28,404 lbs
36	1,2,4-Trimethylbenzene	95-63-6	27,478 lbs	0 lbs	27,478 lbs
37	Butyraldehyde	123-72-8	23,130 lbs	0 lbs	23,130 lbs
38	Naphthalene	91-20-3	22,748 lbs	206 lbs	22,955 lbs
39	Chlorine	7782-50-5	22,110 lbs	0 lbs	22,115 lbs
40	Dichloromethane	75-09-2	19,581 lbs	39 lbs	19,620 lbs
41	Butyl acrylate	141-32-2	18,335 lbs	0 lbs	18,335 lbs
42	Chloromethane	74-87-3	15,422 lbs	31 lbs	15,478 lbs
43	Chloroethane	75-00-3	14,992 lbs	41 lbs	15,068 lbs
44	Boron trifluoride	7637-07-2	14,854 lbs	0 lbs	14,854 lbs
45	Maleic anhydride	108-31-6	13,929 lbs	0 lbs	13,929 lbs
46	Diaminotoluene (mixed isomers)	25376-45-8	12,695 lbs	51 lbs	12,797 lbs
47	Cumene hydroperoxide	80-15-9	11,006 lbs	0 lbs	11,006 lbs
48	Trade Secret	TRD SECRT	9,705 lbs	0 lbs	9,705 lbs
49	Dicyclopentadiene	77-73-6	8,670 lbs	0 lbs	8,670 lbs
50	Allyl alcohol	107-18-6	7,427 lbs	626 lbs	8,053 lbs
51	sec-Butyl alcohol	78-92-2	1,946 lbs	5,600 lbs	7,546 lbs
52	Glycidol	556-52-5	2,841 lbs	4,410 lbs	7,251 lbs
53	Aniline	62-53-3	6,824 lbs	25 lbs	7,119 lbs
54	Manganese compounds	N450	1,175 lbs	5,037 lbs	6,212 lbs
55	Methyl isobutyl ketone	108-10-1	4,714 lbs	2 lbs	4,716 lbs
56	Tetrachloroethylene	127-18-4	4,241 lbs	176 lbs	4,417 lbs
57	n-Butyl alcohol	71-36-3	4,032 lbs	0 lbs	4,032 lbs
58	Nickel compounds	N495	80 lbs	3,764 lbs	3,844 lbs
59	Styrene	100-42-5	3,800 lbs	16 lbs	3,816 lbs
60	Phthalic anhydride	85-44-9	3,545 lbs	0 lbs	3,545 lbs
61	Biphenyl	92-52-4	3,115 lbs	15 lbs	3,145 lbs
62	Lead compounds	N420	799 lbs	1,393 lbs	2,194 lbs
63	o-Cresol	95-48-7	1,985 lbs	0 lbs	1,985 lbs
64	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	N040	0 lbs	1,936 lbs	1,936 lbs
65	Phenanthrene	85-01-8	1,547 lbs	159 lbs	1,706 lbs
66	1,1,2-Trichloroethane	79-00-5	1,537 lbs	0 lbs	1,537 lbs
67	Nonylphenol Ethoxylates	N535	1,381 lbs	0 lbs	1,381 lbs
68	o-Xylene	95-47-6	1,330 lbs	0 lbs	1,330 lbs
69	Formaldehyde	50-00-0	1,061 lbs	0 lbs	1,061 lbs
70	Bis(2-chloroethyl) ether	111-44-4	950 lbs	0 lbs	950 lbs
71	Polycyclic aromatic compounds	N590	576 lbs	130 lbs	782 lbs
72	Lead And Lead Compounds	N420	321 lbs	438 lbs	759 lbs
73	Chloroform	67-66-3	638 lbs	0 lbs	638 lbs
74	Anthracene	120-12-7	534 lbs	70 lbs	604 lbs
75	Trichloroethylene	79-01-6	603 lbs	0 lbs	603 lbs
76	Cresol (mixed isomers)	1319-77-3	430 lbs	146 lbs	576 lbs
77	Pentachloroethane	76-01-7	323 lbs	0 lbs	323 lbs
78	Mercury compounds	N458	105 lbs	212 lbs	317 lbs
79	Manganese And Manganese Compounds	N450	309 lbs	0 lbs	309 lbs
80	Mercury And Mercury Compounds	N458	36 lbs	195 lbs	230 lbs
81	1,1,2,2-Tetrachloroethane	79-34-5	219 lbs	0 lbs	219 lbs
82	Benzo[g,h,i]perylene	191-24-2	96 lbs	74 lbs	170 lbs
83	Diphenylamine	122-39-4	126 lbs	14 lbs	140 lbs
84	1,2-Dibromoethane	106-93-4	133 lbs	0 lbs	133 lbs
85	Cobalt compounds	N096	33 lbs	89 lbs	122 lbs
86	Barium And Barium Compounds	N040	0 lbs	99 lbs	99 lbs
87	Carbon disulfide	75-15-0	84 lbs	0 lbs	84 lbs
88	Chlorobenzene	108-90-7	77 lbs	0 lbs	77 lbs
89	1,2-Dichloroethylene	540-59-0	75 lbs	0 lbs	75 lbs
90	Nonylphenol	N530	61 lbs	0 lbs	61 lbs
91	Chloroprene	126-99-8	55 lbs	0 lbs	55 lbs
92	Nitric acid	7697-37-2	49 lbs	0 lbs	49 lbs
93	Ethylidene dichloride	75-34-3	37 lbs	0 lbs	37 lbs
94	Cobalt And Cobalt Compounds	N096	12 lbs	24 lbs	36 lbs
95	Chromium	7440-47-3	0 lbs	33 lbs	33 lbs
96	Nickel	7440-02-0	0 lbs	31 lbs	31 lbs
97	Dioxin and dioxin-like compounds	N150	8 lbs	23 lbs	31 lbs
98	Carbon tetrachloride	56-23-5	27 lbs	0 lbs	27 lbs
99	Hexachloroethane	67-72-1	16 lbs	0 lbs	16 lbs
100	Vinylidene chloride	75-35-4	15 lbs	0 lbs	15 lbs
101	Lead	7439-92-1	1 lbs	13 lbs	14 lbs
102	Propionaldehyde	123-38-6	8 lbs	0 lbs	8 lbs
103	trans-1,4-Dichloro-2-butene	110-57-6	7 lbs	0 lbs	7 lbs
104	Hexachlorobenzene	118-74-1	5 lbs	0 lbs	5 lbs
105	Acetamide	60-35-5	2 lbs	0 lbs	2 lbs

📋

Top chemicals released near this property (2024 only):
Ethylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Ethylene glycol, 1,3-Butadiene
View the full list of 86 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(86 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Ethylene	74-85-1	515,076 lbs	0 lbs	515,076 lbs
2	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0 lbs	277,377 lbs	277,377 lbs
3	Propylene	115-07-1	201,043 lbs	0 lbs	201,043 lbs
4	Ethylene glycol	107-21-1	112,989 lbs	0 lbs	112,989 lbs
5	1,3-Butadiene	106-99-0	108,938 lbs	9 lbs	108,947 lbs
6	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	97,096 lbs	0 lbs	97,096 lbs
7	Cumene	98-82-8	87,714 lbs	31 lbs	87,746 lbs
8	Benzene	71-43-2	58,083 lbs	7 lbs	58,090 lbs
9	Toluene	108-88-3	50,458 lbs	10 lbs	50,468 lbs
10	Methanol	67-56-1	17,927 lbs	27,510 lbs	45,437 lbs
11	Phenol	108-95-2	44,667 lbs	254 lbs	44,921 lbs
12	Hydrogen sulfide	7783-06-4	38,758 lbs	289 lbs	39,047 lbs
13	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	29,259 lbs	0 lbs	29,259 lbs
14	Ammonia	7664-41-7	25,802 lbs	1,580 lbs	27,382 lbs
15	n-Hexane	110-54-3	23,989 lbs	15 lbs	24,009 lbs
16	Xylene (mixed isomers)	1330-20-7	18,976 lbs	10 lbs	18,986 lbs
17	Acetophenone	98-86-2	17,907 lbs	860 lbs	18,767 lbs
18	Vinyl chloride	75-01-4	16,337 lbs	1 lbs	16,338 lbs
19	Aluminum (fume or dust)	7429-90-5	13,724 lbs	0 lbs	13,724 lbs
20	Hydrogen cyanide	74-90-8	13,000 lbs	70 lbs	13,070 lbs
21	Epichlorohydrin	106-89-8	12,291 lbs	331 lbs	12,622 lbs
22	4,4'-Isopropylidenediphenol	80-05-7	10,300 lbs	0 lbs	10,300 lbs
23	Dichloromethane	75-09-2	9,911 lbs	10 lbs	9,921 lbs
24	Zinc compounds	N982	340 lbs	9,539 lbs	9,879 lbs
25	Acetaldehyde	75-07-0	8,300 lbs	380 lbs	8,680 lbs
26	1,2-Dichloroethane	107-06-2	8,530 lbs	0 lbs	8,530 lbs
27	Acetonitrile	75-05-8	4,900 lbs	3,100 lbs	8,000 lbs
28	Trade Secret	TRD SECRT	5,677 lbs	0 lbs	5,677 lbs
29	Ethylbenzene	100-41-4	4,642 lbs	7 lbs	4,649 lbs
30	Sodium nitrite	7632-00-0	0 lbs	4,600 lbs	4,600 lbs
31	Isobutyraldehyde	78-84-2	4,431 lbs	0 lbs	4,431 lbs
32	o-Toluidine	95-53-4	4,008 lbs	5 lbs	4,018 lbs
33	Glycidol	556-52-5	1,002 lbs	2,400 lbs	3,402 lbs
34	Cyclohexane	110-82-7	3,192 lbs	22 lbs	3,219 lbs
35	Diethanolamine	111-42-2	3,059 lbs	0 lbs	3,059 lbs
36	sec-Butyl alcohol	78-92-2	540 lbs	2,100 lbs	2,640 lbs
37	1,2,4-Trimethylbenzene	95-63-6	2,524 lbs	0 lbs	2,524 lbs
38	Butyraldehyde	123-72-8	2,507 lbs	0 lbs	2,507 lbs
39	Naphthalene	91-20-3	2,483 lbs	22 lbs	2,506 lbs
40	Isoprene	78-79-5	2,360 lbs	16 lbs	2,376 lbs
41	Chloroethane	75-00-3	2,123 lbs	5 lbs	2,128 lbs
42	Chloromethane	74-87-3	1,938 lbs	5 lbs	1,943 lbs
43	Diaminotoluene (mixed isomers)	25376-45-8	1,821 lbs	5 lbs	1,831 lbs
44	Boron trifluoride	7637-07-2	1,178 lbs	0 lbs	1,178 lbs
45	Styrene	100-42-5	1,160 lbs	2 lbs	1,162 lbs
46	Maleic anhydride	108-31-6	833 lbs	0 lbs	833 lbs
47	Chlorine	7782-50-5	808 lbs	0 lbs	808 lbs
48	n-Butyl alcohol	71-36-3	638 lbs	0 lbs	638 lbs
49	Butyl acrylate	141-32-2	597 lbs	0 lbs	597 lbs
50	Dicyclopentadiene	77-73-6	493 lbs	0 lbs	493 lbs
51	Manganese compounds	N450	37 lbs	350 lbs	387 lbs
52	Cumene hydroperoxide	80-15-9	384 lbs	0 lbs	384 lbs
53	Tetrachloroethylene	127-18-4	282 lbs	4 lbs	286 lbs
54	Lead compounds	N420	93 lbs	169 lbs	262 lbs
55	Nickel compounds	N495	0 lbs	218 lbs	218 lbs
56	1,1,2-Trichloroethane	79-00-5	166 lbs	0 lbs	166 lbs
57	Formaldehyde	50-00-0	99 lbs	0 lbs	99 lbs
58	Bis(2-chloroethyl) ether	111-44-4	96 lbs	0 lbs	96 lbs
59	o-Cresol	95-48-7	88 lbs	0 lbs	88 lbs
60	Mercury compounds	N458	0 lbs	53 lbs	53 lbs
61	Chloroform	67-66-3	44 lbs	0 lbs	44 lbs
62	Trichloroethylene	79-01-6	43 lbs	0 lbs	43 lbs
63	Pentachloroethane	76-01-7	36 lbs	0 lbs	36 lbs
64	Polycyclic aromatic compounds	N590	12 lbs	14 lbs	31 lbs
65	1,1,2,2-Tetrachloroethane	79-34-5	24 lbs	0 lbs	24 lbs
66	Diphenylamine	122-39-4	23 lbs	0 lbs	23 lbs
67	Mercury And Mercury Compounds	N458	17 lbs	0 lbs	17 lbs
68	Chlorobenzene	108-90-7	14 lbs	0 lbs	14 lbs
69	Carbon disulfide	75-15-0	12 lbs	0 lbs	12 lbs
70	Nitric acid	7697-37-2	11 lbs	0 lbs	11 lbs
71	Lead And Lead Compounds	N420	7 lbs	0 lbs	7 lbs
72	Phenanthrene	85-01-8	6 lbs	1 lbs	7 lbs
73	1,2-Dichloroethylene	540-59-0	5 lbs	0 lbs	5 lbs
74	1,2-Dibromoethane	106-93-4	4 lbs	0 lbs	4 lbs
75	Carbon tetrachloride	56-23-5	4 lbs	0 lbs	4 lbs
76	Chloroprene	126-99-8	3 lbs	0 lbs	3 lbs
77	Nickel	7440-02-0	0 lbs	2 lbs	2 lbs
78	Chromium	7440-47-3	0 lbs	2 lbs	2 lbs
79	Hexachloroethane	67-72-1	2 lbs	0 lbs	2 lbs
80	Anthracene	120-12-7	1 lbs	1 lbs	2 lbs
81	Nonylphenol	N530	2 lbs	0 lbs	2 lbs
82	Benzo[g,h,i]perylene	191-24-2	0 lbs	1 lbs	2 lbs
83	Ethylidene dichloride	75-34-3	1 lbs	0 lbs	1 lbs
84	Dioxin and dioxin-like compounds	N150	1 lbs	0 lbs	1 lbs
85	Propylene oxide	75-56-9	1 lbs	0 lbs	1 lbs
86	Hexachlorobenzene	118-74-1	1 lbs	0 lbs	1 lbs