20 THERMO-SYSTEMS Sold In The United States Examples of Solar Drying Plants in the USA: Kent County, DE Natchez, MS Rio Vista, CA Confidential and Proprietary to Parkson Corporation

THERMO-SYSTEM® Active Solar Sludge Dryer Confidential and Proprietary to Parkson Corporation 2 Sludge Delivery: By TruckCollection & Distribution: Wheel Loader

THERMO-SYSTEM® Active Solar Sludge Dryer Confidential and Proprietary to Parkson Corporation 3 Sludge Entry: Underground – Liquid SludgeSludge Entry: Underground – Dewatered Cake

TOUCH SCREEN HMI CONTROLS Confidential and Proprietary to Parkson Corporation 4 Enter the data into the THERMO-SYSTEM® PLC interface.

THERMO-SYSTEM® Active Solar Sludge Dryer Confidential and Proprietary to Parkson Corporation 5 Sludge Tilling Machine: Electric Mole®Electric Mole® accelerates the drying process

THERMO-SYSTEM® Active Solar Sludge Dryer Confidential and Proprietary to Parkson Corporation 6 Ceiling Fans: Convective Aeration & Drying Movi-Vent™ Air Circulation System Exhaust Fans: Chamber Air Exchange

2 h 1h weeks (Dry solids to 75%+) Loading Drying Process Unloading THERMO-SYSTEM: Standard Batch Operation Confidential and Proprietary to Parkson Corporation

THERMO-SYSTEM® Active Solar Sludge Dryer Confidential and Proprietary to Parkson Corporation 8 Sludge Removal: Front-Wheel Loader

THERMO-SYSTEM® Active Solar Sludge Dryer Mass reduction: 10MGD Plant Example Confidential and Proprietary to Parkson Corporation 9 20% DS 18,000 t/yr De-watered  Mass reduction approx. 85 % 60-90% DS 3,600 t/yr dried Active Solar Dryer Evaporation: 14,400 t/yr

THERMO-SYSTEM® Active Solar Sludge Dryer Hauling reduction: 10MGD Example Confidential and Proprietary to Parkson Corporation 10 Active Solar Dryer 180 Trucks / yr Evaporation: 14,400 t/yr 900 Trucks / yr ~$450,000/yr savings for 10MGD plant with $40 per ton hauling and tipping fee costs

Thermo-System O & M Requirements Labor: 2 to 4 hours per batch Operator attention: Minimal Maintenance: Grease Electric Mole after every batch Energy: ~ 30kWh per ton of water evaporated Typical O&M cost is extremely low ~ $5 per wet ton! Confidential and Proprietary to Parkson Corporation

Installation Pictures

Waimea, HI 2 drying chamber (42’ x 204’) Drying Water Plant Residuals from 5% to 25% Dry Solids Confidential and Proprietary to Parkson Corporation

Kent County, DE 3 drying chambers (42’ x 204’) First all-glass, Venlo-truss construction by Parkson Better performance and durability! Confidential and Proprietary to Parkson Corporation

Advantages of the THERMO-SYSTEM Green, sustainable technology ― Low energy consumption - sun is primary energy source ― Very low operating costs Robust, easy to operate ― Very low operator attention required ― Very low maintenance requirements Flexible methods of operation Proven technology - large installation base Class A and Class B possible – Maximum disposal options Confidential and Proprietary to Parkson Corporation