Cypress Environment & Infrastructure · Biloxi · Mobile · Pensacola

Environmental Consulting and Civil Engineering on the Gulf Coast

Engineers and scientists under one roof: civil and coastal design, wetland delineations, Corps permits and mitigation. We have offices in Biloxi, Mobile and Pensacola and are licensed in Mississippi, Alabama, Louisiana, Florida and Georgia.

Low impact pier

What we do

We provide civil and coastal engineering, plus the wetland delineations, Corps permits and mitigation that get projects built. Our clients include landowners, developers, businesses and other design firms, along with cities, counties, ports and state and federal agencies. Field data, permit files and design drawings are produced in-house, so the wetland line on the survey matches the one in the permit application.

Wetlands, permitting and mitigation

Cypress scientist recording a wetland boundary point on a Trimble GPS unit along the CN rail corridor
Wetland delineation on the CN rail corridor between Mobile and Jackson.
  • Wetland delineation and jurisdictional determinations (JDs). We delineate to the 1987 Corps manual and the applicable regional supplement, with paired data points, flags located by submeter GPS, and a report formatted for district review. State detail: Mississippi, Alabama, Louisiana.
  • Section 404, Section 10 and 401 permitting. This covers nationwide permits, individual permits, 401 water quality certification, Section 408 permission for work that alters a Corps project, and the state coastal permits and consistency reviews that run alongside them.
  • Compensatory mitigation and mitigation banking. We handle credit purchases, permittee-responsible plans, and the full bank establishment, design and permitting process (prospectus, instrument, work plans, etc.). Credits are calculated with each district’s own method, such as the Mobile District stream SOP or LRAM in the New Orleans District.
  • Species and resource surveys. These include threatened and endangered species, gopher tortoise, submerged aquatic vegetation (SAV) and shellfish surveys.

Civil and coastal engineering

  • Site civil design. Grading, drainage, parking and hardscape, plus stormwater management and construction stormwater (NPDES) permitting. See civil engineering design.
  • Coastal engineering. Piers, marshwalks, bulkheads, revetments, living shorelines and dredging, designed with the 404/Section 10 file in mind from the first sketch.
  • Green infrastructure. Stormwater parks, rain gardens and native plantings that treat runoff while also serving as landscape.
  • Transportation engineering and planning.

Most of our civil work is for public owners.

Construction engineering and inspection (CE&I) and stormwater compliance

  • CE&I on the projects we design. We provide construction engineering and inspection on our public and private design projects in every state where we are licensed to practice engineering. Services include field inspections, pay quantities, quality control and Resident Project Representative services.
  • Construction stormwater (NPDES) compliance inspections in Baldwin and Mobile Counties, Alabama, and Escambia County, Florida, from our Mobile and Pensacola offices. We run regular inspection routes through those three counties, so inspections after qualifying rain happen quickly and pricing stays consistent. Each inspection is checked against the site’s CBMPP (Alabama) or SWPPP (Florida) and led by a Certified Professional in Erosion and Sediment Control (CPESC).

Also

We also provide planning, water resources modeling (for example, hydrodynamic and water quality models of the Back Bay of Biloxi for MDEQ), and a limited number of Phase I/II environmental site assessments and remediation projects.

Why clients hire us

  • District-specific methods. We work with the Mobile, Vicksburg, New Orleans and Jacksonville Districts of the U.S. Army Corps of Engineers. Each district has its own stream method, assessment tools and review habits, and we build the file to suit the district that will review it.
  • Science and engineering under one roof. Environmental scientists, a Professional Wetland Scientist, and civil and environmental PEs work on the same projects. When we do both, wetland impacts are reduced in design before the permit is drafted, not argued afterward.
  • Credentials on the work. Our credentials include PE, PWS, AICP, CEP, CPESC and ENV SP.
  • Owner-led. Cypress is owned by Cynthia Henderson, PE, PWS (president and principal engineer), and Marc Foster, AICP CEP (vice president and principal planner).

Recognition

  • Inc. 5000 list of America’s fastest-growing private companies: 2022, 2023 and 2024.
  • PSMJ AEC Circle of Excellence: 2025 Winner.
  • ASCE Mississippi Small Project of the Year and ENR Regional Best Projects, 2021, for the Shepard State Park marshwalk pier in Gautier, Mississippi.
  • USEPA Gulf Guardian Award, 1st Place (Civic Project), 2015, for the Bayou Auguste Tidal Stream Restoration, Phase 4 in Biloxi.
Inc. 5000 honoree 2022
Inc. 5000 honoree 2023
Inc. 5000 honoree 2024
PSMJ AEC Circle of Excellence 2025 Winner

Where we work

We have three Gulf Coast offices and keep the same hours at each: Monday–Friday, 9 a.m.–5 p.m.

  • Biloxi, Mississippi (headquarters): 772 Howard Avenue
  • Mobile, Alabama: 150 Government Street, Suite 950-1000
  • Pensacola, Florida: 13 Palafox Place

We are licensed in Mississippi, Alabama, Louisiana, Florida and Georgia. See office locations.

Selected projects

Little Biloxi River Mitigation Bank, Mississippi

Little Biloxi River Mitigation Bank, Mississippi. A 166-acre Mobile District bank with pine savanna, stream and bottomland hardwood credits. Our work included wetland delineation, T&E study, stream assessments and ecological function assessments.

CN rail corridor, Mobile to Jackson. A roughly 200-mile linear project delineation across the Mobile and Vicksburg Districts, with endangered species surveys, stream characterization, an environmental assessment and permitting.

Louisiana mitigation banks. We did delineation, species surveys and ecological assessments for the Lea Farm (400+ acres) and Mei Gum (300+ acres) banks, and a 505-acre delineation at the Bedico Creek site. See Louisiana work.

Perch Creek Parks, City of Mobile. Concept design and master planning to redo three waterfront parks, including conceptual engineering design, coastal flooding analysis and wetland mapping.

Low impact pier

Shepard State Park marshwalk pier, Gautier. Pier alternatives over marsh and Lamotte Bayou, laid out to avoid SAV and keep the bayou open to kayaks.

East Pier Roadway, Port of Gulfport

East Pier Roadway, Port of Gulfport. We realigned the road for container truck traffic and added a stormwater park and rain gardens on a former brownfield.

Common questions

Do I need a wetland delineation before I buy or build?
If the site has any chance of wetlands or streams and you plan to fill, grade or clear, yes. Order it before closing or site design. The delineation sets the boundary that the Corps, and in the coastal counties the state, will use to review any permit.

Which Corps district will review my project?
It depends on the watershed, not the county line. Coastal Mississippi and most of Alabama are in the Mobile District. Much of central and western Mississippi is in the Vicksburg District, and south Louisiana is in the New Orleans District. We confirm the district in the desktop review before fieldwork.

What should I send for a proposal?
A parcel ID or boundary file (KML or shapefile), approximate acreage, what you plan to build, and any deadline such as a closing date. Site photos help.

Do you work in Louisiana?
Yes. We are licensed in Louisiana and serve Louisiana projects from Biloxi.

Start with the site

Send us a parcel boundary, a site plan or a short description, and we will tell you what the permit path looks like and what the first step costs.

Our people

Engineers, scientists, and planners — Gulf Coast environmental and infrastructure work.

Engineering, environmental consulting & planning firm.
Cynthia Henderson, PE, PWS
President & Senior Environmental Engineer
Engineering, environmental consulting & planning firm.
Marc Foster AICP CEP
VP & Senior Planner
Engineering, environmental consulting & planning firm.
Lindsay Spurrier, AICP
Planning & Environmental Program Manager
Engineering, environmental consulting & planning firm.
Payton Billingsley
Civil Engineer, PE
Engineering, environmental consulting & planning firm.
Project Manager & Civil Designer
Engineering, environmental consulting & planning firm.
Jamie Barhanovich
Business Development

Join Us

If you are passionate about the Gulf Coast’s communities and  environment — built and natural — we’d like to hear from you.

Office hours: Monday–Friday, 9am–5pm

Addresses:

772 Howard Avenue, Biloxi, MS

150 Government Street, Suite 950-1000, Mobile, AL

13 Palafox Place, Pensacola, FL

 

Marc Foster

Phone: 228-596-1580

E-mail: [email protected]

 

Cynthia Henderson

Main line: 228-596-1580

E-mail: [email protected]