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Johnson Engineering > Services We Provide > Water Resources > Water Resources – Surface Water > Team

Andrew Tilton, P.E.

Andy is the Director of the Water Resources market group. He has been with Johnson Engineering since 1978 and is a shareholder of the company. Andy provides quality control on the projects under design and permitting such as Ford Street Filter Marsh and Northern Everglades Potential Environmental Storage (NE_PES) projects. Andy is District Engineer for independent special districts such as Telegraph Cypress Water Management District, Babcock Ranch Community Independent Special District and Walnut Creek Community Development District. These districts are governed by Chapters 298, 189, and 190 of the Florida Statutes respectively. He also assists with the engineering for several Community Development Districts in Lee and Collier Counties. Andy has served as the senior engineer for surface water on many of the firm’s roadway projects for Hendry County, Lee County Department of Transportation, City of Cape Coral, City of Fort Myers, Collier County and the Florida Department of Transportation. He provides direction for monitoring, permitting, design and construction related issues. Andy is very active in the conceptual phase of the larger projects. He transitions the work to other water resource team members as the project is designed and permitted. Each project has watershed level issues to determine related to backwater profiles for setting site elevations and flood analysis, setting control elevations, measuring flows for calibration and working with the groundwater and environmental considerations of each site.

David Robson, P.E.

David joined the Water Resources section of Johnson Engineering in April of 2005. He works with clients on general engineering projects, NPDES permitting and compliance, and asset management for CDD’s located throughout Lee and Collier Counties.

David has past experience working with irrigation, drainage, project management, and facilities management for a horticultural operations company with five U.S. facilities and a South American production facility. He also served on agricultural community committees for the Southwest Florida Restudy and Florida Department of Agriculture and Consumer Services Best Management Practices development, and continuing membership in the agricultural engineering societies SE-303 committee.

Ricardo Acosta, P.E., CFM

Rick joined Johnson Engineering in February of 2006 and worked on several development projects. Rick has now developed his capabilities as a stormwater engineer on the surface water management team. He has designed and permitted surface water management systems for an assorted type of projects through SFWMD and SWFWMD, including transportation (roadways, bridges and railroads), environmental restoration, commercial, industrial and residential. He has served as project manager on various projects, including the Stormwater Improvements to the Basin III of the City of Naples, the construction of the Powell Creek Preserve Filter Marsh in Lee County and the expansion of the South Central Florida Express Railroad system in Hendry County.

Rick has performed numerous analyses according to the FEMA’s Guidance to determine the impacts of Proposed Developments in Regulatory Floodways for a variety of projects. He has worked on projects that are relatively simple to those that are relatively complex with acceptance by the local review agency.

Jonathan Wadas, P.E.

Jon joined Johnson Engineering in May 2006. He is an water resources engineer and works on projects with all branch offices of Johnson Engineering. His experience includes work on a variety of drainage, water use permitting, and land development projects. His water resources group experience includes technical reports in support of permit applications, hydraulic modeling, hydrographs, pollutant and contamination reports, geological data analysis, water demand calculations, water quality data, and water sampling. He has also conducted monitoring of surface water management systems and groundwater withdrawal facilities for SFWMD permit holders. He has completed FDEP Standard Operating Procedures Sampling Training for Groundwater, Surface Water and Wastewater. Jon also has experience working in our development group where his daily experience included site design, site grading, cross sections, underground utilities, cut/fill estimates, construction cost estimates, construction plan sets, construction permitting, coordination with outside consultants, and on-site construction inspections. He also assisted project managers with civil engineering consultant services for new residential and commercial developments.

Patricia Bell, P.E.

Patricia first joined Johnson Engineering in April 2000 with a bachelor’s degree in civil engineering. As a project manager for the surface water department Patricia is responsible for the administration, design and permitting for various projects. Patricia’s responsibilities include water management system design, stormwater treatment calculations, numeric nutrient criteria calculations, stormwater modeling, overseeing design plans for conformance with permitting agencies and good engineering practices, and submitting for agency permits including; SFWMD, SWFWMD, ACOE, FDEP, local municipalities and drainage districts. Having served as a project manager for various development, roadway and drainage projects, Patricia is very experienced in the design and permitting of surface water management systems.

Erik Howard, P.E, P.S.M., LEED AP, CGC, CFC

Erik is a licensed engineer, water well contractor, plumbing contractor, and general contractor in the State of Florida. His experience as an engineer includes well design, permitting, certification, construction administration, well construction, rehabilitation and development, groundwater modeling, data analysis, and pump station design. He routinely prepares specialized plans and specifications for projects that require an ‘outside-of-the-box’ approach. Erik’s technical background and practical experience allow him to handle any groundwater well project, whether it’s a simple piezometric data analysis or complex and troublesome deep injection well issue. Erik has worked on more than 60 well projects in the past three years as a water well contractor. As an engineer, he has overseen the construction and testing of more than 30 wells with depths up to 1,379 feet and casing diameters up to 30 inches.

Wayne Wright, P.E.

Wayne has over 30 years of experience working as an Electrical, Instrumentation & Controls (EI&C) engineer. His experience includes design and implementation of instrumentation, process control, industrial control, systems integration and commissioning, site and process evaluations, SCADA architecture, networking, telemetry, and PLC/HMI/OIT programming. Wayne has provided control panel electrical designs for motor control, instrumentation, low voltage power distribution, lighting, and lightning protection. Wayne has worked on projects with multiple disciplines in project management and project engineering roles managing project scope, schedule and budget from conceptual design through detailed design and construction completion, and has provided engineer-of-record and construction observation services.

Alfredo Perez, E.I.

Alfredo joined Johnson Engineering in 2005 as a survey CAD technician and now works as a project engineer on our water resources team. He has seven years of prior survey experience and is familiar with both office and field procedures for data collection and global positioning systems. Alfredo continued his education as a part-time student while transitioning into engineering within the company. He graduated from FGCU in May 2014, earned his State of Florida Engineering Intern (E.I.) certification and is currently pursuing his professional engineering license. He works on a variety of projects entailing various disciplines of engineering which include: groundwater, utilities, surface water, construction inspection, report writing, and field data collection. His diverse experience allows him to assist all areas of engineering, surveying and mapping, and preparing plans and specifications.