Celebrating 74 years in Business: 1946-2020
  • Land Development
  • Planning & Landscape Architecture
  • Water Resources
  • Environmental
  • Surveying & Mapping
  • Transportation
  • Utilities

Stormwater/Surface Water Quality Studies

There are a vast number and types of water bodies throughout Florida, each with its own unique set of properties and characteristics. We can provide everything needed to create a successful water quality monitoring program. Our vast array of instruments includes multi-parameter meters, submersible data sondes, continuous recording water level dataloggers, tipping bucket rain gauges, rainfall collection systems, portable refrigerated sampling systems, Doppler flow meters, and data telemetry systems. From collecting samples for analysis to evaluating the results, our team has the knowledge, experience, technology, and expertise to meet our clients’ needs. Our established relationships with several state certified laboratories provides our clients efficiency without sacrificing quality.

Groundwater Quality Studies

Groundwater provides Florida with vital drinking and irrigation water. Water quality monitoring provides assurances that the integrity of this supply is maintained. Our experienced team specializes in designing and implementing groundwater quality monitoring programs based on a strong knowledge of water quality regulations, and a client’s particular project needs. We enjoy strong working relationships with local regulatory agencies and can expertly and efficiently carry out their monitoring requirements. From measuring conductivity to collecting samples for laboratory analysis, our team can handle the monitoring needs throughout the life of a project, allowing our clients to successfully address regulators’ concerns and manage their project’s groundwater resources in a sustainable manner.

Estuarine/Coastal Water Quality Studies

In a state with over 2,200 miles of shoreline, Florida’s coastal waters require special attention to protect these fragile ecosystems. The estuaries along our coasts are comprised of many different habitats including mangroves, tidal flats, sea grass beds and oyster reefs. Each of these different habitats is a vital part of the overall health and stability of our coastal waters. Our team of environmental and coastal scientists understands the complexities of these marine environments. Our monitoring experience within Outstanding Florida Waters and national estuaries strengthens our ability to meet the regulatory needs of our clients efficiently and effectively.

Subaqueous Sediment Characterization

Our clients’ water quality monitoring needs sometimes extend beyond the actual water bodies themselves. State-issued Environmental Resource Permits (ERP) often require sediment samples to be collected from lake bottoms, in addition to traditional water quality samples, to assess deposition. Our team of scientists has assisted clients with a variety of projects including channel dredging and marina expansions. Our strong working relationships with regulators and familiarity with FDEP sediment assessment regulations allow us to efficiently carry out successful monitoring programs. We maintain a variety of vessels and sampling equipment in-house, which allow us to quickly and thoroughly meet the needs of each project.

NPDES Compliance Monitoring

The state’s NPDES program requires industrial and municipal permit holders to maintain storm water management programs (SWMP) that monitor the impacts of storm water discharged from the project site. We work closely with manufacturers, municipalities and community development districts (CDD) to develop and implement these monitoring programs. We also have strong working relationships with local, state and federal regulators and can expertly and efficiently carry out monitoring programs required by these agencies. Our team can identify major outfalls, collect water quality samples for laboratory analysis, and evaluate the results. We also assist NPDES construction activity permit holders by performing site inspections on their best management practices (BMP), which are needed to remain in compliance.

Filter Marsh Efficiency Evaluation

Filter marshes have become a popular and effective method of providing water quality treatment in an aesthetically pleasing setting. By diverting surface water flow through a series of planted areas, pollutants are able to settle out of the water column while the vegetation consumes/takes up excess nutrients. Managing these systems effectively requires careful water quality monitoring to allow for optimal pollutant removal efficiency. Our environmental scientists have first hand experience in monitoring and maintaining these systems. From managing water levels and flow to performing water quality sampling and evaluation, we have the knowledge to provide successful filter marsh management.

TMDL Pollutant Loading Determination

Many of Southwest Florida’s water bodies have been listed as “impaired” by FDEP, meaning they fail to meet one or more state water quality standards. As a result, the FDEP will establish Total Maximum Daily Loads (TMDL) for those water bodies. We help our clients approach the TMDL process in a proactive manner. By developing scientifically sound water quality monitoring programs, we can evaluate the impacts of a project on the watershed basin. We then make recommendations as to how these impacts can be reduced through a variety of Best Management Practices (BMP) tailored to suit our clients’ needs.

Turbidity Monitoring

Monitoring turbidity in the water column is an important aspect of managing a successful construction project. When working on land, standard best management practices (BMPs) can be highly effective in preventing runoff into stormwater inlets or nearby water bodies, but construction in or on the water requires additional safeguards. Properly installed turbidity curtains can isolate mixing zones during dredging and subaqueous utility projects. Monitoring water quality outside of the turbidity curtains is necessary to provide the required level of protection needed to prevent damage to surrounding aquatic life. Johnson Engineering’s team of environmental scientists is familiar with common permit conditions related to turbidity monitoring. Our monitoring equipment meets EPA standards and all monitoring activities are performed in accordance with FDEP standard operating procedures. Our vessels and sampling devices meet the needs of each project efficiently as possible.

Phase I Environmental Site Assessments

A Phase I Environmental Site Assessment (ESA) is sometimes required as a part of development, purchase or refinance of a piece of real estate. The purpose of a Phase I ESA is to identify recognized environmental conditions (RECs) associated with the current and historical use of a property and its adjoining properties. The term REC includes hazardous substances or petroleum products even under conditions in compliance with laws. The Phase I ESA also assesses nearby sources of contamination and the potential impact to the subject property from these sources. Our assessments include a search of state and federal government records, historical use information, site reconnaissance and interviews. The assessments are conducted in accordance to the latest ASTM E1527 Standard Practice for Environmental Site Assessments and All Appropriate Inquiry in Code of Federal Regulations Title 40 part 312. Our established partnership with a leading provider of environmental risk and historical data helps meet the individual needs of our clients without sacrificing quality.

Phase II Environmental Site Assessment Sampling

If a Phase I Environmental Site Assessment (ESA) identifies potential contamination on the piece of real estate, sampling as part of a Phase II ESA may be conducted. The Phase II ESA is a comprehensive investigation that can include various types of sampling for petroleum products and/or hazardous substances including metals and pesticides. Our team of environmental scientists is trained in soil, surface water, and groundwater sampling techniques in accordance with Florida Department of Environmental Protection Standard Operating Procedures. From collecting samples for analysis to evaluating the results, our team has the knowledge, experience, technology, and expertise to conduct these unique assessments.