# Langan

- **Website:** <https://treadwellrollo.com>
- **Primary alias:** `treadwellrollo.com`

## Description

Langan is an engineering and environmental consulting firm providing integrated land development, environmental, and digital solutions. With more than five decades of experience, the company works on challenging projects in the United States and internationally, emphasizing technical excellence, practical experience, and responsiveness to clients.

Its services span site and civil engineering, geotechnical and environmental consulting, energy, seismic engineering, transportation, surveying and geospatial work, environmental compliance, health and safety management, sustainability, landscape architecture, land-use planning, natural resources and permitting, and waterfront and marine projects. Langan also offers digital services, including systems development, GIS mapping, and environmental data management and analytics. Additional capabilities include cultural and heritage management, asset and facility management, and support for PFAS and geologic hazards.

The firm serves a wide range of sectors, including education, healthcare, government, residential and commercial development, energy, data centers, airports, and infrastructure. Its project portfolio also includes tall buildings, environmental remediation, renewable energy, stadiums, resorts, and mixed-use developments.

## Industries

- 🏭 Heavy Industry and Engineering
- 🏭 Waste Water and Environmental _(under Heavy Industry and Engineering)_

## Links

- [twitter](https://twitter.com/LanganEngEnv)
- [linkedin](https://linkedin.com/company/langan-engineering-)
- [instagram](https://instagram.com/langanengenv)

## Logos & icons

- logo _(primary)_ — PNG — [download](https://cdn.brandfetch.io/idoGOwxPzG/w/196/h/26/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1790861038054)
- icon _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idoGOwxPzG/w/300/h/300/theme/dark/icon.jpeg?c=1bxid64Mup7aczewSAYMX&t=1790861038143)

## Colors

| Name | Hex | Theme |
| --- | --- | --- |
| Mariner | #3875d7 | accent |
| Torea Bay | #0e1d92 | dark |
| White | #ffffff | light |

## Fonts

- proxima-nova — asset _(custom)_
- var(--secondary-font) — asset _(custom)_

## Imagery

- banner _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idoGOwxPzG/w/1500/h/500/idhc8a1jKA.jpeg?c=1bxid64Mup7aczewSAYMX&t=1790861038335)

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_Source: <https://brandfetch.com/treadwellrollo.com>_
_See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._