About Us

Environmental & Turf Services (ETS) is an interdisciplinary firm with extensive collective experience working with agriculture, turf, golf courses, firing ranges, and hazardous site investigations. Dr. Stuart Cohen founded ETS in January 1991. Since that time, ETS has maintained a small, tight-knit team of highly trained professionals.

The ETS team has worked on projects from Massachusetts to Hawaii, and many points in between. ETS’ services of providing scientific assistance and expert testimony have been beneficial in assisting companies that are doing their best to comply with increasing regulatory demands. ETS also provides technical assistance to municipalities in the review of technical documents for proposed developments.

ETS serves its clients by resolving complex scientific issues with sound science. In fact, much of ETS’ work has been cutting-edge, state-of-the-art science. Evidence for this can be found in the lists of abstracts, papers, and posters that the staff have presented before scientific peers.

Federal Environmental Statutes

Federal environmental statutes most relevant to ETS’ work are the Clean Water Act (CWA), the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), the Safe Drinking Water Act (SWDA), and the Resource Conservation Recovery Act (RCRA).

Experience Summary

Golf Courses:

Hawaii, California (including Pebble Beach), Minnesota, Pennsylvania, Vermont, New Hampshire, Massachusetts, New York, Texas, Oregon, New Jersey, Maryland, Florida, Nebraska, Arizona, Wyoming, Utah, Colorado, Connecticut, North Carolina, Canada (British Columbia and Alberta) and China (Hainan).

Firing Ranges:

California, Maryland, Virginia, Texas, Arizona, Delaware, Washington, Colorado, and Hawaii, plus a conceptual global BMP program for the U.S. Navy.

FIFRA Compliance / Agriculture:

Kansas, California, Delaware, North Carolina, and many national/assessments involving interaction with the U.S. EPA’s Office of Pesticide Programs (OPP).

TSCA Compliance:

National environmental fate (chemical persistence and mobility) assessments relevant to Section 5, Premanufacture Notification (PMN) actions.

Invited Lectures:

Brazil, England, Thailand, Israel, France, Germany, Hungary, Canada, Denmark, Austria, Switzerland, Italy, Sweden, Portugal, and at least 10 states in the U.S.

Expert Witness Testimony:

Dozens of times throughout the U.S. before local commissions, the U.S. Congress, and courts in California, Washington, Massachusetts, and Hawaii.

Compliance Guide for Firing Ranges:

ETS wrote an “EPA and OSHA Compliance Guide for Small Arms Ranges: A Focus on Lead.” This book — the first of its kind — is based partly on questions Dr. Cohen and others have received while teaching the NRA’s Range Development Conferences. For Compliance Guide information click here.


ETS has published dozens of articles in both peer and non-peer reviewed literature. See the pages on golf courses, firing ranges, and agricultural pesticides for summaries of our key technical publications.

News Media Coverage:

ETS has been on CNN twice, a public TV station, and has been prominently featured in at least a dozen articles in the trade press.