Removal of Sand & Grit

The Polston Process™

1990 Main Street, Suite 750 Sarasota, FL 34236

941.444.1440 www.polstonprocess.com

July 9, 2014

Polston Applied TechnologiesPolston Applied Technologies (PAT) manufactures, and provides

service using, proprietary equipment developed over 30 years by Pat Polston. We use a cost-effective, sustainable system, we call the Polston Process™. Our equipment and process dramatically reduces the life cycle costs associated with maintaining structures in wastewater collection and treatment systems.

while your plant remains in service

from fully submerged conditions

safer and faster from structures

We remove debris…

Sun N’ Lake Improvement District Sebring,

Florida

ChallengeDue to sand and grit, wastewater treatment plant was experiencing loss of detention volume and reduced water quality

District contemplating a major capital expansion to increase functional capacity and efficiency of its 700,000 gallon per day facility

Sun N’ Lake Improvement District

ResultsPAT 949 Combination Truck and Polston Process™ pulled more than 175 cubic yards of accumulated sand from the bottom of their wastewater treatment plant – without taking the system offline.

By removing the sand, the Sun ‘n Lake Improvement District was able to indefinitely defer a potential multi-million dollar capital expansion.

Sebring, Florida

We Don’t Suck!We are NOT a vacuum technology

The Polston Process™ & PAT 949 Combination Truck overcome two naturally occurring challenges:

Naturally Occurring Challenges

1. Depth

2. Submerged material

1 day, 1 load, PAT 949 Combo WEEKS and 30 loads for ANY Vacuum Truck on Market

Damp / Wet Line

Damp / Wet Line

ALL HAVE JOINTS, CRACKS, SEAMS

- Rag Materials- Sand & Grit- Fats, Oils, Greases (Fog)

Debris Entry

DOWN HOLE PUMP MODE

DEBRIS + WATER

Down HolePump

Switched On

Continuous Dewatering via a Looped

StreamNO

DOWNTIME

DOWN HOLE PUMP MODE

DEBRIS + WATER

o 8” Submersible (Proprietary) Down Hole Pump, 2500 GPM

o Hydrostatically Driveno 49’ Crane

DOWNHOLE PUMP MODE

DEBRIS + WATER

DOWN HOLE PUMP MODE

DEBRIS + WATER

o Debris Tank Under Pressureo STOKES LAW: Solids with a specific

gravity greater than 1.0 fall under pressure

o All sand, grit, rag material stay in the tanko Bio-solids and water return to the sourceo Closed loop system: uses inline water

Debris Box Top

Debris Box Top…COMPLETELY FULL!

RESULT = Paint filter dry

material, ready for landfill

JEA Approach

JEA Approach

The Polston AdvantageCity of Branford: Restored design capacity, saved $50k in fines by eliminated solids being released putting the plant in compliance, and preventing further EPA issues.

Sun N’ Lake: restored design capacity = delayed multi-million dollar improvement project indefinitely

Tampa Desalination Facility: removed more than 100 cubic yards material in LESS THAN 1/3 cost and 1/10 time than the last time grit removal was required

These Results…SAVE MONEY &

INFRASTRUCTURE

1990 Main Street, Suite 700 Sarasota, FL 34236 t. 941.444.1440 www.polstonprocess.com

“Let’s Grit ’Er Done!” ™