Managerial and Technical Staff

Name/Title (by first name)

Extension

Andy Persio, MS
Staff Hydrologist/Geologist

238

Barry Vanderent
Designer/Draftsman

224

Carl H. Nelson, PE
Water Resources Engineer

236

Chien Wang, PE
Project Hydrologist

219

Denys Ilyichov
Environmental Engineering Associate

221

Jeff Martin, PE
Project Engineer

218

Jeffrey H. Peters
Principal/Director of Planning & Environmental Services

206

Joseph E. Smiell
Principal/CFO

208

Lawrence Press
System Administrator

210

Margaret Henderson, ASLA
Landscape Architect/Restoration Specialist (CA License #1689)

240

Marc Feliciano, EIT
Engineering Technician

232

Matt Woll
Wastewater Engineering Technician

217

Mike Harris
Staff Geologist

223

Mike Laham, EIT
Environmental Engineering Associate

212

Norman N. Hantzsche, PE
Principal/Managing Engineer

214

Paul Pospisil, PG
Project Geologist

215

Sydney A. Temple, PE
Principal/Senior Hydrologist

220

Will Hopkins, CEG
Senior Engineering Geologist

222