Land Application and Nutrient Management

Water quality and waste management are pivotal to protecting Florida’s fragile spring systems, groundwater aquifers, and marine estuaries. Civil Seas Engineering designs compliant septic systems, land application processes, and nutrient management programs that safely recycle waste and manage soil nutrients, minimizing environmental and regulatory risks.

Our Septic, Nutrient & Biosolids Services

We assist utility providers, agricultural operations, municipalities, and commercial developers with engineering and compliance for land application and waste systems:

• Septic Management & Biosolids Engineering: Engineering domestic wastewater systems, on-site sewage treatment and disposal systems (OSTDS), septage stabilization facilities, and land application designs for Class A and Class B biosolids.
• Nutrient Management Planning & Reporting: Preparation of nutrient management plans, soil chemistry evaluations, nitrogen and phosphorus loading analyses, nutrient balance calculations, and annual monitoring reports to support compliant agricultural, municipal, and biosolids land application programs.
• FDEP Permitting: Navigating regulatory reviews and obtaining environmental permits under Florida Department of Environmental Protection (FDEP) rules, including Chapter 62-610 (reclaimed water) and Chapter 62-640 (biosolids) compliance.

Specialization: Protecting Estuarine Ecosystems

In Northeast Florida, runoff containing elevated concentrations of nitrogen and phosphorus can contribute to harmful algal blooms in the Matanzas River and the St. Johns River. Our firm specializes in the design of septic systems and land application sites that incorporate crops and vegetative buffer zones to effectively manage nutrient loading. These systems are designed to promote nutrient uptake by soil and vegetation, reducing the potential for nitrogen and phosphorus to migrate into nearby surface waters and helping protect the region’s valuable aquatic ecosystems.