AeroLeads people directory · profile

Ryan Sullivan Email & Phone Number

Environmental Scientist and Risk Assessor at HydroGeoLogic, Inc.
Location: Helena, Montana, United States 4 work roles 3 schools
1 work email found @hgl.com 1 phone found area 703 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email r****@hgl.com
Direct phone (703) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
HydroGeoLogic, Inc.
Role
Environmental Scientist and Risk Assessor
Location
Helena, Montana, United States
Company size
439 employees

Who is Ryan Sullivan? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Ryan Sullivan is listed as Environmental Scientist and Risk Assessor at HydroGeoLogic, Inc., a company with 439 employees, based in Helena, Montana, United States. AeroLeads shows a work email signal at hgl.com, phone signal with area code 703, and a matched LinkedIn profile for Ryan Sullivan.

Ryan Sullivan previously worked as Environmental Scientist/Risk Assessor at Hydrogeologic, Inc. and Backcountry Ranger at National Park Service. Ryan Sullivan holds M.S., Natural Resources And Environmental Science from University Of Illinois At Urbana-Champaign.

Company email context

Email format at HydroGeoLogic, Inc.

This section adds company-level context without repeating Ryan Sullivan's masked contact details.

{first_initial}{last}@hgl.com
89% confidence

AeroLeads found 1 current-domain work email signal for Ryan Sullivan. Compare company email patterns before reaching out.

View email format View company profile Management contacts
Profile bio

About Ryan Sullivan

Environmental Scientist/Risk Assessor with over 14 years of environmental consulting experience and a strong educational background in natural resource management. Experience includes authoring technical reports, managing and analyzing large amounts of data, authoring proposals, managing projects, procuring and managing subcontractors, and interacting with regulators, stakeholders, and the public. Broad experience working on all phases of CERCLA, RCRA, and state regulatory programs.

Listed skills include Environmental Science, Environmental Consulting, Sampling, Ecology, and 11 others.

Current workplace

Ryan Sullivan's current company

Company context helps verify the profile and gives searchers a useful next step.

HydroGeoLogic, Inc.
Hydrogeologic, Inc.
Environmental Scientist and Risk Assessor
Helena, MT, US
Website
hgl.com
Employees
439
AeroLeads page
Company profile
View company profile Email format
4 roles · 24 years

Ryan Sullivan work experience

A career timeline built from the work history available for this profile.

Environmental Scientist/Risk Assessor

Current
Hydrogeologic, Inc.

Helena, Montana, United States

  • Completed human health and/or ecological risk assessments for EPA, USAF, USACE and NASA projects in 31 states to assess whether contaminants (e.g., petroleum hydrocarbons, PFAS, 1,4-dioxane, chlorinated solvents.
  • Served as the PM for 4 USACE-Omaha projects, including LTM groundwater projects and soil excavations of hazardous and TSCA waste, functioning as the primary POC for communication with clients, regulators, and.
  • Authored technical deliverables for all phases of CERCLA, RCRA, and state regulatory programs. Deliverables include UFP-QAPPs, Work Plans, PAs, SIs, RIs, FSs, RODs, PPs, and RAWPs, as well as RCRA equivalents (e.g..
  • Managed the risk assessment technical team (4 people), with duties including delegating work assignments, monitoring scope, schedule, and budget, mentoring junior staff, and completing annual reviews.
  • Implemented remedies to remediate soil, groundwater, surface water, sediment, and/or indoor air. Experience implementing excavations, groundwater injections and treatment systems, landfill covers, and vapor intrusion.
  • Managed field investigations in 9 states to collect data necessary to achieve project objectives. Sampled media included soil, sediment, groundwater, surface water, soil gas, and indoor air. Managed both internal staff.
Nov 2008 - Present

Backcountry Ranger

National Park Service

Olympic National Park, WA

Responsible for hiking the backcountry of Olympic National Park, WA (3 to 7 day patrols) and enforcing NPS rules and regulations, providing visitor assistance, and responding to medical emergencies and search and rescue events. In addition, staffed a front-country visitor station, providing visitor assistance and education.

May 2008 - Sep 2008

Laborer

Deister Construction

Parkville, Missouri

Duties included a wide range of construction-related activities, including pouring concrete, carpentry, minor electrical work, excavation (including operating a skid steer and a backhoe), routine maintenance on regional water treatment facilities, and snow removal.

2002 - 2007 ~5 yrs
Team & coworkers

Colleagues at HydroGeoLogic, Inc.

Other employees you can reach at hgl.com. View company contacts for 439 employees →

DR Donna Roner Donna Roner Colleague at Hydrogeologic, Inc. Ballston Spa, New York, United States, United States View → JR John Rupnik John Rupnik Colleague at Hydrogeologic, Inc. Reston, Virginia, United States, United States View → LN Linda Nyland Linda Nyland Colleague at Hydrogeologic, Inc. Atlanta Metropolitan Area, United States View → JP Jessica Pollard Jessica Pollard Colleague at Hydrogeologic, Inc. Albuquerque, New Mexico, United States, United States View → RV Roger Viticoski, Ph.D., Eit Roger Viticoski, Ph.D., Eit Colleague at Hydrogeologic, Inc. Chattanooga, Tennessee, United States, United States View → BC Brian Csernak Brian Csernak Colleague at Hydrogeologic, Inc. Harford County, Maryland, United States, United States View → RB Regina Bergner Regina Bergner Colleague at Hydrogeologic, Inc. Prospect, Kentucky, United States, United States View → EC Edmundo Cintra Edmundo Cintra Colleague at Hydrogeologic, Inc. Kansas City Metropolitan Area, United States View → PD Paul Dimakos Paul Dimakos Colleague at Hydrogeologic, Inc. Vincentown, New Jersey, United States, United States View → MM Megan Matteazzi Megan Matteazzi Colleague at Hydrogeologic, Inc. Denver Metropolitan Area, United States View →
3 education records

Ryan Sullivan education

FAQ

Frequently asked questions about Ryan Sullivan

Quick answers generated from the profile data available on this page.

What company does Ryan Sullivan work for?

Ryan Sullivan works for HydroGeoLogic, Inc..

What is Ryan Sullivan's role at HydroGeoLogic, Inc.?

Ryan Sullivan is listed as Environmental Scientist and Risk Assessor at HydroGeoLogic, Inc..

What is Ryan Sullivan's email address?

AeroLeads has found 1 work email signal at @hgl.com for Ryan Sullivan at HydroGeoLogic, Inc..

What is Ryan Sullivan's phone number?

AeroLeads has found 1 phone signal(s) with area code 703 for Ryan Sullivan at HydroGeoLogic, Inc..

Where is Ryan Sullivan based?

Ryan Sullivan is based in Helena, Montana, United States while working with HydroGeoLogic, Inc..

What companies has Ryan Sullivan worked for?

Ryan Sullivan has worked for Hydrogeologic, Inc., National Park Service, and Deister Construction.

Who are Ryan Sullivan's colleagues at HydroGeoLogic, Inc.?

Ryan Sullivan's colleagues at HydroGeoLogic, Inc. include Donna Roner, John Rupnik, Linda Nyland, Jessica Pollard, and Roger Viticoski, Ph.D., Eit.

How can I contact Ryan Sullivan?

You can use AeroLeads to view verified contact signals for Ryan Sullivan at HydroGeoLogic, Inc., including work email, phone, and LinkedIn data when available.

What schools did Ryan Sullivan attend?

Ryan Sullivan holds M.S., Natural Resources And Environmental Science from University Of Illinois At Urbana-Champaign.

What skills is Ryan Sullivan known for?

Ryan Sullivan is listed with skills including Environmental Science, Environmental Consulting, Sampling, Ecology, Rcra, Cercla, Environmental Awareness, and Groundwater Remediation.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.

People with similar names

Check these profiles if this is not the Ryan Sullivan you were looking for.

Ryan Sullivan
Ryan Sullivan
Investment Banking I Strategist I Opportunist
Prairie Village, Ks
Ryan S.
Ryan S.
Investment Banking I Strategist
Mission, Ks
View similar profiles