Meet the Staff

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Derek Wieske, PE, is the Public Works Director and City Engineer for the City of Montclair. He is responsible for the Engineering, Street/Sewer Operations, and Grounds/Facilities Divisions of the Public Works Department. In addition, as City Engineer, he also supervises the daily activities of the Engineering Division, including:

• Administering the City's Capital Improvement Program including the supervision of the preparation of design plans for public improvements and the construction and construction management of those improvements.

• Supervising the issuance of construction and encroachment permits.

• Providing plan checking services for development activities such as tract maps, parcel maps, lot line adjustment, parcel mergers, street improvements, sewer improvements, storm drain improvements, and grading plans.

• Supervising the City's Public Works Inspection program for all work conducted within City right-of-way. • Conducting feasibility studies.

• Maintaining records of engineering data for the Public Works Department, including benchmarks, centerline ties, record drawings, and traffic counts.

• Overseeing the traffic signal operations including signal coordination and timing, street lighting, and traffic safety.

• Coordinating traffic and transportation issues with surrounding and regional agencies.

+Derek holds a Bachelor of Science Degree in Civil Engineering from the University of California Irvine, and a Master's Degrees in both Civil Engineering and Business, both from Caifornia State University in Long Beach. He's a Registered Professional Engineer, and a member of American Society of Civil Engineers. Prior to joining the City of Montclair team, Derek has served other public agencies, including the County of Orange and the Cities of Lake Forest, Laguna Beach, Rancho Santa Margarita, and Long Beach.

Steve Stanton, Project Manager, is responsible for the implementation of the City’s Capital Improvement Program. His responsibilities include development of preliminary project concepts and cost estimates, preparation of grant applications for various projects, development of designs and construction drawings, preparation of project specifications, conducting public bid openings, and contract administration and construction management of Public Works projects. Steve began his employment in 1987 after being a life-long resident of the City of Montclair. He has worked within many departments including Human Services Department, Fire Department, Police Department, and currently the Public Works Department.

Steve can be contacted at (909) 625-9444 or via e-mail at


Jim Diaz, Public Works Inspector, began his career with the City of Montclair as a Maintenance Worker in 1998. Jim was promoted to the Public Works Inspector's position in 2002. As the City's only Public Works Inspector, Jim is responsible for inspections on all City improvement projects as well as those improvements constructed in the public right-of-way by developers. These inspections include new City streets and street rehabilitation projects, storm drains, sewer lines, park development, landscaping, and street lights. Jim moved to the City in 1973 and attended the local schools while growing up in Montclair.

Jim can be reached at (909) 625-9442 or by e-mail

Nicole deMoet, Environmental Manager, began employment with the City of Montclair in April 2007. She is responsible for the City’s compliance with Federal, State, and local regulations for environmental concerns, sewer, pretreatment, storm water, and other wastewater discharges. She oversees commercial and industrial pretreatment/stormwater inspections performed to determine compliance with Federal, State, and local wastewater regulations. She is also tasked with assisting in the coordination and execution of the NPDES Program.

Nicole can be reached at (909) 625-9446 or by email at  


Joseph Rosales, NPDES Coordinator, began his tenure with the City in 1989. He was promoted NPDES Coordinator in 2004. He is responsible for implementing the requirements of the National Pollutant Discharge Elimination System (NPDES) as it relates to stormwater discharges from construction sites and industrial/commercial facilities. He ensures development/redevelopment projects comply with the San Bernardino County Water Quality Management Plan and coordinates with City staff to ensure all City departments are in compliance with City's stormwater program.

Joe can be reached at (909) 625-9470 or by email at


Nathan Pino, Environmental Technician, under general direction, performs field inspections on industrial, commercial, residential discharges of stormwater and to enforce and ensure compliance with the NPDES permit. Nathan applies appropriate enforcement actions in relation to the inspection results. He performs education and outreach activities for NPDES Programs.

Nathan can be reached at (909) 625-9447 or by email


Marissa Pereyda, Administrative Specialist, is frequently the first point of contact for the Public Works Engineering Division, assisting with inquiries at the counter and over the phone. She is responsible for the daily office activities of the Engineering Division, as well as issuing transportation permits and reporting traffic signal and street light problems. Marissa also assists the City Engineer and other Engineering Division staff members with various projects. Marissa joined the Engineering Division in 2014. She received her Bachelor’s Degree in English from the University of California, Riverside in 2007.

Marissa can be reached at (909) 625-9478 or by e-mail at