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(480) 252 5295


(602) 758 3206




About Us

Our company is based on the belief that our customers' needs are of the utmost importance. Our entire team is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals.

We would welcome the opportunity to earn your trust and deliver you the best service in the industry.


Wickenburg & Phoenix, AZ

Mail to:

Widget Creek Engineers LLC

PO Box 2811

Wickenburg, AZ 85358






Mon - Fri: 8AM - 5PM

Widget Creek Engineers LLC

2225 East Poinsettia Drive

Phoenix, AZ 85028-1020

Our Consulting Team

As Founding Principal, Carolina Baertsch brings passion, leadership and expertise to WCE project assignments. She performs as a superb task leader on multi-discipline teams serving as project engineer/manager of WCE’s civil design activities. Carolina manages technical aspects of projects and also excels as the primary point of contact and communicator with the Prime Consultant’s Project Manager and/or Owner’s Representative. Her experience includes water system improvement designs, wastewater system evaluations and rehabilitation, water and wastewater systems modeling and design, master plans and water and wastewater treatment including biological odor control systems.

One of her first projects that she completed won the Water Infrastructure Finance Authority of Arizona (WIFA) “Best Technical Assistance Project” Award.

Certifications: Professional Civil Engineer, Arizona (49826); Leadership in Energy and Environmental Design, (LEED) Green Building Institute

Carolina Baertsch, MS, PE, LEED® AP

Owner and

Principal Engineer

Over 9 Years in the Field, Over 20 Years as a Professional

As an environmental contract manager and permitting specialist, Ron Frey adds value and knowledge of project regulatory issues and requirements. He has more than 40 years of experience in the environmental field, including 30 years with ADEQ conducting research,

inspections, air and water quality monitoring, regulatory enforcement and permit approvals for air quality, aquifer protection, NPDES and effluent reuse. Ron was responsible for planning and approval of over $700 million in grant monies allocated to Arizona for wastewater treatment improvements.

Ron Frey,

Client Service Manager and Permitting Specialist

Over 40 Years Experience

As Technical Advisor, Fred Goldman’s expertise in hydrology/hydraulics and seasoned, award-winning experience in municipal engineering assures project quality for WCE tasks and projects.

Dr. Goldman has designed and helped implement water and wastewater infrastructure projects throughout the State of Arizona; performed significant surface water hydrology studies; and managed numerous wastewater collection, treatment and disposal systems, and water distribution systems. His projects have received two Grand Awards by the ACEC of Arizona, and two Outstanding Engineering awards and a Water Policy Award by the Arizona Society of Professional Engineers. Fred is also an Adjunct Faculty Member of the Arizona State University Civil Engineering Department.

Certifications Professional Civil Engineer, Arizona and California; Arizona State Board of Technical Registration Enforcement Committee; Registered Land Surveyor, Arizona

Fred Goldman,

Ph.D., PE

Technical Advisor

Over 40 Years Experience

Stephen J. Tencza retired recently from being a Project Manager for the City of Tucson Water Department. Project management included preparing estimates of project cost, work on multiple sequential design stages, coordination with TW construction inspectors and construction section supervision. He also reviewed private consultants' plans, specifications & cost estimates for TW's water system improvements and relocation due to city/county and private enterprise roadway improvements.

Prior to that he was the Nogales Project Office Manager for the United States Section of the lnternational Boundary and Water Commission (USIBWC). He supervised fourteen (14) employees in the operation and maintenance of the twelve (12) million gallon daily (MGD) Nogales lnternational Wastewater Plant (NIWTP), international outfall interceptor (IOI) and the Dos Nacos Sewage Pump Station and sewage treatment plants. He was also a team member in a United States Environmental Protection Agency's three million dollar grant project to improve the Nogales, Sonora sewerage system.  Most of the engineering (design and construction management) was done on site in Mexico, to lessen Mexico's sewage contribution to the NIWTP facility.

Stephen also served as the USIBWC's technical advisory committee (TAC) member on the 1998-2003 facility planning and preliminary design for the NIWTP upgrade. Work included field inspection of the IOI and its impact on the NIWTP's design parameters for influent strength, quantity, and peaking factor.

Steven J. Tencza, PE Construction Support, Inspector

Over 20 Years Experience