📊 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

1313 SHAVER ST PASADENA 77502

Elevation

25.94 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)

Vacant lot (no building data). No structure to calculate damage for.

Depth-Damage Estimate (Neighborhood Comparison)

Vacant lot (no building data). No structure to calculate damage for.

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: 15.94 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

Moderate

Higher pollution than 60% 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)

56 thousand lbs

Above Typical

8.6x more than typical Houston property
≈ 3 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)

56 thousand lbs

High

11.6x 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)

0 lbs

None

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
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs
This Property (2014-2024)	56,068 lbs	56,068 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs
This Property (2024 Only)	2,922 lbs	2,643 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 60% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).

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

n-Hexane, Ammonia, Toluene, Ethylene glycol, Xylene (mixed isomers)

View the full list of 18 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (18 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Total (lbs, 10yr)
1	n-Hexane	110-54-3	20,650 lbs	20,650 lbs
2	Ammonia	7664-41-7	15,000 lbs	15,000 lbs
3	Toluene	108-88-3	5,463 lbs	5,463 lbs
4	Ethylene glycol	107-21-1	5,255 lbs	5,255 lbs
5	Xylene (mixed isomers)	1330-20-7	4,640 lbs	4,640 lbs
6	Benzene	71-43-2	2,388 lbs	2,388 lbs
7	Ethylbenzene	100-41-4	847 lbs	847 lbs
8	1,2,4-Trimethylbenzene	95-63-6	655 lbs	655 lbs
9	Diethanolamine	111-42-2	600 lbs	600 lbs
10	Nickel	7440-02-0	120 lbs	120 lbs
11	Cumene	98-82-8	84 lbs	84 lbs
12	Certain glycol ethers	N230	80 lbs	80 lbs
13	Naphthalene	91-20-3	79 lbs	79 lbs
14	Manganese	7439-96-5	70 lbs	70 lbs
15	Styrene	100-42-5	56 lbs	56 lbs
16	C.I. Food Red 15	81-88-9	40 lbs	40 lbs
17	Chromium	7440-47-3	40 lbs	40 lbs
18	Lead compounds	N420	1 lbs	1 lbs

Top chemicals released near this property (2024 only):

Toluene, n-Hexane, Ethylene glycol, Xylene (mixed isomers), Benzene

View the full list of 16 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (16 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Toluene	108-88-3	658 lbs	659 lbs
2	n-Hexane	110-54-3	563 lbs	563 lbs
3	Ethylene glycol	107-21-1	500 lbs	500 lbs
4	Xylene (mixed isomers)	1330-20-7	361 lbs	363 lbs
5	Benzene	71-43-2	285 lbs	285 lbs
6	Lead compounds	N420	0 lbs	269 lbs
7	1,2,4-Trimethylbenzene	95-63-6	83 lbs	86 lbs
8	Ethylbenzene	100-41-4	69 lbs	69 lbs
9	Manganese	7439-96-5	30 lbs	30 lbs
10	Chromium	7440-47-3	25 lbs	25 lbs
11	Nickel	7440-02-0	24 lbs	24 lbs
12	Naphthalene	91-20-3	9 lbs	13 lbs
13	Certain glycol ethers	N230	10 lbs	10 lbs
14	Diethanolamine	111-42-2	10 lbs	10 lbs
15	Cumene	98-82-8	9 lbs	9 lbs
16	Styrene	100-42-5	7 lbs	7 lbs