lake savers · © lake savers 1 lake savers™ natural lake restoration™ results update fall 2010

© Lake Savers 1

LAKE SAVERS™

Natural Lake Restoration™Results Update

Fall 2010

© Lake Savers 2

Contents

About Lake Savers

Summary of Lake Savers Natural Lake Restoration™ Methods

Results

Working with Lake Savers

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About Lake Savers…

To deliver ACTIONABLE strategies to restore lakes to a balanced, pristine condition for the benefit of current stakeholders and future generations.

Mission:

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Natural Methods for Lake Restoration

Lake SaversNatural Lake Restoration™

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The Need for Lake Restoration Efforts

Excessive Weed GrowthAlgae BloomsAccumulation of Muck/ Loss of DepthOdor

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Five Key Points Guiding our Approach to Natural Lake Restoration

1. Most water bodies are overfed and out of balance.

2. Conventional strategies are primarily people management strategies not lake management strategies.

3. Nutrient reduction (Internal & External) is the only sustainable approach to Lake Restoration.

4. Lakes Need to Breath to Be Healthy!

5. Lake Savers can put your lake on a diet and exercise program utilizing ENGINEERED AERATION™ and BACTERIAL AUGMENTATION to restore health, balance and recreational quality.

© Lake Savers

People Management not Lake Management 7

Summary on What’s Wrong with Traditional Approaches the Lake Management

Excessive Weed Growth

Algae Blooms

Accumulation of Muck/Loss of Depth

Odor

Internal Nutrient Loading

Oxygen Depletion

2. Few, if any resources are directed at solving root causes.

External Nutrient Loading

LAKE PROBLEMS

ROOT CAUSES

1. Most dollars are spent on Chemicals, Harvesting and/ or Dredging which only treat symptoms.

3. Lake continues to deteriorate over time, treatment costs rise.

© Lake Savers

Lake Savers: A Diet & Exercise Program for Lakes!8

Our Approach – Attack the Root Causes!

Excessive Weed Growth

Algae Blooms

Accumulation of Muck/Loss of Depth

Odor

ENGINEERED AERATION & BENEFICIAL BACTERIA/ ENZYME TREATMENT

External nutrient loading

Internal nutrient loading

Oxygen Depletion

FLOATING ISLANDS

© Lake Savers

Lakes Need To Breathe To Be Healthy!!!9

The Importance of Dissolved Oxygen

Oxygen Depleted Lake Oxygen Rich Lake1. When oxygen runs out at the lake

bottom phosphorus can release from the sediments and feed weed growth and algae blooms.

2. Anaerobic bacteria take over producing ammonia, methane and hydrogen sulfide.

3. Organic muck accumulation accelerates.

4. Fish Can’t feed at the bottom (where most of the food is) – stunting, fish kills possible, rough fish begin to outcompete desirable species.

1. In the presence of oxygen Phosphorus stays locked in the sediments unavailable to weeds and algae.

2. Aerobic bacteria thrive forming a healthy bottom environment and base for the aquatic food chain.

3. Aerobic bacteria literally eat muck/organics converting it to carbon dioxide and water.

4. Fish can feed all the way to the bottom creating a healthy fishery both in size and population of desirable species.

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Floating Islands –Trapping Nutrients at the points of Entry


© Lake Savers


Floating Islands for Reducing External Nutrient Loading

What are Floating Islands?Porous mats made of a matrix of 100% recycled polyester and bonded together with a high grade marine foam for buoyancy.

Highly flexible system with a multitude of design options for aesthetic and functional impact.

How do Floating Islands Work?They create a self-contained environment for vegetation that can absorb significant amounts of nutrients from the water.They mimic natural wetlands at a much lower cost than reclaiming upland areas and converting them to wetlands.They are most effective for Lake Restoration when used around storm drains and inlets to trap nutrients flowing into the lake.

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Engineered Aeration & Biological Augmentation –Complete Water Body Oxygenation and Reduction of

Internal Nutrient Loading


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Engineered Aeration & Beneficial Bacteria/Enzyme Treatments

How Engineered Aeration & Beneficial Bacteria/Enzyme Treatments Work

A system of underwater air diffusers connected to shore-based compressor units by self-sinking airline.

Each system is custom engineered based on the specific needs and requirements of each lake.

Water picks-up oxygen at the surface and is circulated back to the bottom maintaining a continuous supply of oxygen throughout the entire water column.

High oxygen levels and “off-gassing” reduce nutrient levels, reducing weed and algae growth.

Beneficial bacteria and enzyme products are added to restore balance to the aquatic eco-system.

Beneficial bacteria that require oxygen, literally eat the organic muck on the bottom.

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O2

Aerobic benthic bacteria break down organics

Nutrients removed through the food chain

Phosphorus stays locked in sediment

N Oxygenated surface water moves to the bottom.

CO2Toxic Gases removed

H2S

How Engineered Aeration Restores Lake Health & Balance

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Accelerating a Lake’s Natural Cleaning Mechanism

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2 feet of organic muck prior to treatment

Aerobic bacteria can breakdown organic muck 30 times faster than anaerobic bacteria.

The Power of Engineered Aeration & Beneficial Bacteria/Enzyme Treatment

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CLEAN-FLO… Engineered Aeration in Action

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CLEAN-FLO… Engineered Aeration in Action

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Engineered Aeration & Biological Augmentation Results Update

Lake SaversManagement Strategies for Healthier Lakes

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Greenwood Lake Greenwood Lake, New York

About the Lake 80 Treatment area in 9 mile lake – Maximum Depth 12 feet.Treatment area focuses on parts of the lake that are the focal point of the community.Milfoil and algae growth out of control.Water in the treatment area fetid with frequent odor problems in the summer.

Management Program Clean-Flo Engineered Aeration installed in June of 2010.Clean-Flo bacteria and enzyme treatment applied in July of 2010.5 days of Harvesting.

Results Estimated 50% reduction in Milfoil growth in 60 days!No re-growth of milfoil following harvesting.Milfoil reductions not just the result of harvesting.Major improvements in water clarity and quality

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Greenwood Lake Treatment Area

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Greenwood Lake Results: Before – Upper Eastern Arm Area

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Greenwood Lake Results: After – 45 Days after Installation

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Greenwood Lake Results: Before – Upper Eastern Arm Area

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Greenwood Lake Results: After – 45 Days after installation

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Greenwood Lake Water Quality Data

LOCATION 1 2 3 4 5 6 7 8 9 10 Avg.

Total Phosphorus mg/l 2008 (Before)

0.03 0.07 0.11 0.20 0.19 0.21 0.11 0.17 0.18 0.06 .133

Total Phosphorus mg/l June 2010 (Before)

.17 .13 .22 .15 .18 .17

Total Phosphorus mg/lSept 2010(After)

.06 .06 .05 .05 .07 .07 0.06

Phosphorus & Nitrogen

More than a 50% Reduction in Total Phosphorus in the Treatment Area in less than four months!

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Greenwood Lake Season One ResultsBottom Sediment Organic Composition Improvement

“Muck” Accumulation Improvement

LOCATION 1 2 3 4 5 6 7 8 9 10 Avg

% Organic2008 Sample (Before)

45% 43% 38% 35% 40%

% OrganicSept. 2010Sample (After)

24.9% 18.8% 13.6% .4% 25.1% 10.7% 15.6%

LOCATION 2 4 5 6 7 8 9 Avg.

Muck Depth 2008 Sample (Before)

12” 18” 36” 24” 12” 18” 18” 19.71”

Muck Depth Sept. 2010Sample (After)

0” 12” 6” 12” 0” 12” 24” 9.42”

More than a 50% Organic Content of Sediment AND muck depth in less than 4 months

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Greenwood Lake Season One Results

Lake Bottom in area of Sample 4Lake Bottom in area of Sample 4

June 2010 (Before) September 2010 (After)

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Greenwood Lake Season One Results

Lake Bottom in area of Sample 8Lake Bottom in area of Sample 8

June 2010 (Before) September 2010 (After)

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Turnberry Lakes Lakewood, Illinois

About the Lakes 100 Treatment area in 4 community lakes mile lake.Hyper-Eutrophic System.Aggressive herbicide program eliminated aquatic plants and led to algae dominated lakes.Algae mats have been so thick that saplings have been seen growing on top of the algae mats.

Management Program Clean-Flo Engineered Aeration installed in May of 2009.Extremely aggressive beneficial bacteria treatment program implemented in 2009 and 2010.Innovative Harvesting program implemented in conjunction with the system.Commitment to ZERO herbicide/algaecide use.

Results Muck reductions ranging from 6” to 11” in 2009.Lakes largely clear of algae mats in August of 2010 for the first time in over five years.

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Turnberry Lakes Treatment Area

Max Depth 6 feetMax Depth 16 feet

Max Depth 7 feet Max Depth 8 feet

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Turnberry Lakes Results

Turnberry Lake 3 (Biggest problem lake) July 2010

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Turnberry Lake 3 August/September 2010

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Turnberry Lakes 2010 “Secret Weapons”

Lake Clear Bacteria Weedoo Harvester Boat

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Turnberry Lakes Muck Reduction Results

April2009 Baseline

September2009(Season 1 Result)

September 2010 (Season 2 Result)

2 Season Cumula-tiveReductionAverage

MuckDepth

Avg.Muck Depth

Net Reduction

Avg.Muck Depth

Net Reduction

Lake 1(40 Acres, 15 Sample Sites)

40.00” 29.07 10.93” 22.80” 6.27” 17.20”

Lake 3(8 Acres 10 Sample Sites)

37.10” 32.73” 5.47” 29.25” 2.48” 8.95”

Lake 4(4 Acres 5 Sample Sites)

24.80” 16.20” 8.60” 14.80 1.40” 10.00”

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Turnberry Lakes Muck Reduction Results

Gravel exposed near shore on Lake 1 September 2010

These areas had more than 12” of muck above the gravel prior

to system implementation

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Collins Lake Scotia, New York

About the Lake 60 acre lake with public beach.Beach closed for two years due to fecal bacteria issue.Milfoil and pondweed growth out of control.Watershed management strategies and herbicide treatment were not producing adequate results.

Management Program One-time herbicide treatment for milfoil and pondweed (2006).Clean-Flo Engineered Aeration installed in June of 2006.Clean-Flo bacteria and enzyme treatment applied in July of 2006.

Results Beach opened in August of 2006, remained open all of 2007.No significant re-growth of milfoil or pondweed.Dissolved oxygen maintained throughout water column all winter despite shutting down the system for 3 months.Noticeable reduction in dead plant material and muck in 2007.

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Collins Lake “Before” Pictures 2006

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Collins Lake “After” Pictures 2008 (Similar View of the Lake)

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Collins Lake “Before” Pictures 2006

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Collins Lake “After” Pictures 2008 (Similar View of the Lake)

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Collins Lake “After” Pictures 2008

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Collins Lake “After” Pictures 2008

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Lakes Bridgeport & Benbrook Fort Worth, Texas Area

About the Lakes Two large water supply and recreational reservoirs.High levels of manganese and hydrogen sulfide resulting in taste and odor issues as well as increased treatment costs.Represent two of the largest lake aeration projects in the country. 800 to 1000 acre treatment areas on 13,000 acre Lake Bridgeport and 4,400 acre Lake Benbrook

Management Program Clean-Flo System installed in 2010

Results Data shows the ability to oxygenate to a depth of 16 meters in 1 month of continuous operation. Natural turnover interrupted the process in 2010. We anticipate sustaining a minimum of 4 mg/l DO continuously.

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Lakes Bridgeport & Benbrook Systems

Lake Bridgeport

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Lakes Bridgeport & Benbrook Systems In Action

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Lake Bridgeport Destratification Progress after 30 Days Continuous Operation

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BP Intake Area Profiles8/13/2010

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Tarrytown Upper Reservoir Tarrytown, New York

About the Lake 25 Acre lake, max depth 12 feetCompletely over-run with milfoil and coontail.Significant Blue-Green Algae through-out entire lake and Filamentous Algae near the shoreline.12” to 18” of organic muck accumulation on the lake bottom.

Management Program Clean-Flo System installed in July of 2010.Bacteria and Enzyme treatment applied in July of 2010.

Results Milfoil and coontail uprooted from the bottom and starting to fail in 30 days.Most weeds decomposed and gone within 60 days.Sand/gravel exposed at shoreline in 60 days.Filamentous Algae eliminated and Blue-Green Algae reduced in 60 days.

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Tarrytown Upper Reservoir System Design

Diffusers (placed on the bottom, not to scale they will be much smaller)

Rotary Claw Unit Location housed in shed (not to scale will be much smaller)

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Tarrytown Upper Reservoir – Day of Installation (Before)

Reference Points

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Tarrytown Upper Reservoir – After 60 Days

Reference Points

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Tarrytown Upper Reservoir – Results

View from Dock Area Along Southeast Shore

Installation Day (Before) After 60 Days

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Tarrytown Upper Reservoir – Results

View from Dock Area Along Southwest Shore

Installation Day (Before) After 60 Days

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Tarrytown Upper Reservoir – ResultsGoogle Earth Image June 18,

2010 (before) 60 Days after Installation

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Bel Marin Keys Novato, California

About the Lake 114 Acre man-made lake30 Acre Paddle Boat Lagoon selected as pilot treatment areaBlue-Green Algae dominatedHighly anoxic environment with DO near zero 15 feet from the bottom

Management Program Clean-Flo System installed in June of 2007.Results independently monitored by CLE Engineering

Results DO concentrations restored throughout the water column in 60 days.Dramatic improvements in Total Phosphorus and many other water quality parameters.Expanding deployment of Clean-Flo System to other areas of the lake.

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Bel Marin Keys System Design

Diffusers (placed on the bottom, not to scale they will be much smaller)

Compressor (not to scale much smaller)

Phase 1Phase 2Phase 3

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Willow Lake Kalamazoo, Michigan

About the Lake 7 Acre lake/pond.Completely over-run with milfoil, filamentous algae, lily pads, and coontailSeven foot max depth with 4 foot average depth

Management Program Clean-Flo System installed in June of 2007.One-time herbicide treatment for milfoil.Harvesting program for lily pads.Bacteria and Enzyme treatment applied in July of 2007.

Results Filamentous algae problem eliminated.No significant re-growth of milfoil.Coontail significantly reduced.Lily pads did grow back after harvesting, however, we are starting to see tubers “pop” to the surface.Clear signs of breakdown of organics in the lake.

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Lake Brown – Kissimmee FloridaAbout the Lake

60 Acre Lake on at a Florida Resort.5 – 6 feet average muck accumulation.Beach closed for several weeks per year.Virtually a “dead” lake due to overuse of herbicides over a 10 year period.

Management Program Clean-Flo System Installed July 1, 2008

Results Aquatic weed growth under control without the use of chemical herbicides.Average muck reduction of 2’4” in 13 months.Swimming beach remained open for full season for the first time in 6 years.

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Lake Brown Muck Reduction ResultsWater Depth Measurement Points

Muck Measurement Reference Points for future assessment

5.5’

8’

15’

5.5’

5.5’

7’

5.5’

7’

7/01/2008 Measurement

6/08/2009 Measurement

5.5’

8’

5.5’

8’5.5’

9’

5.5’

8’

5.5’

9’

5.5’

9’5.5’

8’

2’6” muck remaining

2’6” muck remaining

More than 9’ muck remaining

5.5’

8’

4.5’

6’

1

2

3

54

67

8

9

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11A

B

C5.5’

8’

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Lake Powai, India

About the Lake 500+ acre lake in India.Hydrilla and Water Hyacinth had taken over the lake.Lake heavily polluted from watershed

Management Program Clean-Flo Engineered Aeration installed with bacteria and enzyme treatment.Harvesting program initiated to reduce Water Hyacinth.

Results Nutrient levels in the lake reduced by 90% in the first year.Hydrilla and Water Hyacinth reduced to non-nuisance levels.Significant improvement in all water quality indicators.

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CLEAN-FLO System Anticipating Questions and Concerns

Will the system create a safety hazard for boats?• No, there is nothing at the surface of the lake. The diffusers and

airline are located on the lake bottom.

Will the system create a safety hazard for swimmers?• No, the diffuser boils are very gentle and do not pose a hazard for

swimmers.

Will the system harm the lake in any way?• No, the system is simply putting air into the water. The bacteria and

enzyme products used do not even require DEQ Permit Approval –unlike herbicides.

Will the system deplete the lake entirely of plants and algae?• No, the system will gradually bring the lake back into a healthy

balance of aquatic vegetation.

Will the system harm fish and other wildlife?• No, fish benefit as will the entire food chain in the lake.

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How we work with our Customers…

Information RequiredIdentification of goals and areas of focus.

Depth profile.

Flow rates on outflows/retention time.

Weed and algae assessment.

Water quality data.

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How we work with Customers

1. Gather necessary data on your lake

2. Engineer a Clean-Flo System Design and Quote for your lake

3. Present Design and Quote

4. Install & Manage System (Unique Lake Savers Leasing Program)

CostNothing! In most cases

Nothing! In most cases

Nothing!

As quoted

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Lake Savers Leasing Program (Optional)

System Leasing:

Years 1 – 5 $XXXX per year

Years 6 – 10 $XXXX – 20% per year

Years 10+ $XXXX – 30% per year

Includes:InstallationSystem Maintenance and performance monitoringBacteria and Enzymes for year oneFULL replacement/repair of equipment at no additional cost. (Exceptions for vandalism, lightening strikes/power surge and storm damage/flooding.)

Installation: $XXXX

Shipping: At cost

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Advantages of Leasing vs. Purchase of a Clean-Flo System

Lake Savers is responsible for ALL maintenance and repair. The leasing agreement includes strict performance criteria for maintaining the equipment in peak operating condition.The customer is not making a capital investment in equipment that sits outdoors and at the bottom of a lake 365 days a year.Under the leasing agreement the equipment is guaranteed to be working in “as new” condition for the life of the lease.Results and performance monitoring is included in the lease. The leasing agreement offers an “out clause” after 30 months if the system is not delivering results as specified at lease inception.

NOTE: Lake Savers will quote a purchase option with a minimum 4 year service contract if requested. Lake Savers will NOT sell a Clean-Flo System without a service contract.

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Other Costs:Installation of Electrical service to compressor locations – customer responsibility.

Ongoing Costs:Electricity Costs – We can provide estimates as designs are developed.

Additional Costs

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Lake Savers – Partial Track Record2007

Willow Lake Kalamazoo, MI – 8 acresWillowridge Lake , Kokomo, IN – 8 acresSherman Lake Channel, Kalamazoo, MI – 5 acres

2008Lake Brown Kissimmee, FL – 60 acresSeveral additional ponds – 4 – 6 acres

2009 Turnberry Lakes – 100 acresChippewa Lake (Channel) – 6 acres

2010 Scheduled InstallsLake Bridgeport Reservoir Fort Worth, Texas – 700+ acre treatment area – DONELake Benbrook Reservoir Fort Worth Texas – 800+ acre treatment area – DONEIndian Lake Dowagiac, MI – 86 acre treatment area – DONEGreenwood Lake Greenwood Lake, NY – 40 acre treatment area – DONEUpper Tarrytown Reservoir, Tarrytown, NY – 30 acres – DONELittle Lakes, Frankfort, Indiana – 30 acres – Scheduled October 2010Massabesic Reservoir, Manchester, NH – 225 acres – Scheduled October 2010

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Why Lake Savers!!

Time (years)

Cost

1 2 3 4 5 6 7 8 9 10

Deteriorating Water Body

Traditional Approaches Alone

Healthy Water Body

Healthy Water Body

Engineered Aeration/ Beneficial Bacteria & Enzyme Treatments and Floating Islands

Healthy Water Body

© Lake Savers 79

Summary

1. Most water bodies are overfed and out of balance.

2. Conventional strategies are primarily people management strategies not lake management strategies.

3. Nutrient reduction (Internal & External) is the only sustainable approach to Lake Restoration.

4. Lakes Need to Breath to Be Healthy!

5. Lake Savers can put your lake on a diet and exercise program to restore health, balance and recreational quality.

lake savers · © lake savers 1 lake savers™ natural lake restoration™ results update fall 2010

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