DamitDams. damitdams.com

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1 DamitDams Company Overview If you live in Michigan completely surrounded by the five great lakes you understand water. You also gain a great respect for water. Sometimes water needs to be managed, moved, dammed or diverted. If you need to get water out of the way, DamitDams Cofferdam Systems of Michigan is your answer. Jack Nichols of Fenton Michigan started DamitDams in 2002, after thirty years in the construction business. Because of his vast building and construction experience, he saw first hand the need for a fast and effective way to manage water. He also knew it had to be environmentally friendly. To protect this precious natural resource, DamitDams has developed - in accordance with the Clean Water Act - a unique method to manage water with little or no impact on the environment. Instead of using outdated sand bags, earthen fill and the use of heavy equipment our water-filled cofferdams effectively control water in an environmentally friendly manner. Because of their industrial strength, our DamitDams Cofferdam Systems are reusable. There is no waste and no harm to the land. We work with Mother Nature - not against her. DamitDams has successfully worked with The US Army Corps of Engineers, The Department of Transportation and leading engineering firms through out the United States and around the world to solve complex dewatering and water containment problems. With current worldwide weather and climate changes causing water to move unpredictably, the speed in which a DamitDam can be installed make it indispensable for emergency situations. So if you need to get water out of the way contact a DamitDams representative DamitDams applications. damitdams.com Wetland Management Haz-Mat Contamination Chemical Spills Flood Control De-Watering Construction Sites Bridge Pier Repair Pipeline Crossings Levees Dredging Fish Habitat Pond Liner Repair Water Storage Boat Ramp Dewatering Create Foot Causeway In Environment Sensitive Areas Environmental Remediation Intake/Outfall Shoreline Restoration 1

2 DamitDams Patented Cofferdams Basic Configurations How it works: 1. DamitDams portable Cofferdams are made of a heavy-duty geotextile woven polypropylene outer casing that contains two side-by-side inner tubes. The inner dual tubes act as a stabilizer to keep the Dam from rolling due to outside water pressure and other forces. 2. Based on the depth of water you need to control, DamitDams come in eight different heights: and 12 feet. 3. Important note: The Dam needs to be 25% higher (above board) than the depth of the water you are controlling. Example: 4 feet of water will require a 6 ft. high dam. 4. Onsite water is pumped - at the same rate - into the two fill tubes. 5. As the water enters both inner tube chambers, the outer master tube slowly and evenly inflates creating a strong, stable cylindrical tube. 6. As the inner tubes fill and the water pressure builds, the DamitDam un-rolls in a controlled manner creating a barrier dam so you are able to begin your water project. 7. The dam can be small or large and molds perfectly to the lake, river or waterbed. 8. A DamitDam can be extended to any length necessary. Using the extension coupling system, individual dams are easily linked together creating a watertight chained barrier. Extremely durable, once inflated you will be able to walk on the DamitDam easily when adding on extensions. 9. The dam is flexible and easy to install, steer or turn precisely where you need it. 10. Once the DamitDams is properly placed and filled to specifications - you can begin your project by pumping water from the side that needs to be dewatered. After you have completed your water project, simply deflate your DamitDams and it can be easily stored for future use. DamitDams Deployed and Dewatered 2

3 One Picture is worth a thousand words! Preparation: Have you been in the water yet? 1. It is imperative that you know the surface soil conditions at your site to ensure that you have the right size cofferdam. The reason is due to the increased pressure of the cofferdam, surface soil settlement may affect the dam size you will require. 2. Check the following: Water depth: (You will need to know the deepest water-depth level) Soil composition (soft bottom, muck etc.) Determine water movement: Still, standing, moving. 3. Check your bottom: You will need to make sure there are no surprises under the water surface that could hinder a successful deployment. Examples: Large boulders, metal poles, wood posts, rebar, glass, sunken tree limbs, old shopping carts, cars, Jimmy Hoffa etc. Size Matters: Determine the height before you begin. A Small DamitDams..1-4 ft. in height A Large DamitDams ft. in height DamitDams come in eight heights: and 12 feet. A custom designed DamitDam can be inner-locked together to accommodate any length needed. The size of the DamitDam required per project depends on the following criteria: 1. Depth of the water: Measure the deepest point. 2. Velocity of the water: Still or moving? Moving how fast? 3. Terrain 4. Surface Soil condition: How deep is your muck? Do the Math: 1. The DamitDams must be 25% higher than the surface (free board) of the water you are controlling. 2. When installed, the DamitDams will be about 2.5 times wider than it is high. For example, an 8 foot dam will be about 20 feet wide. DamitDams Size/Water Depth Ratio Table Overview* DamitDams Size 1 ft. 8 2 ft ft. 2 ft. 4 ft. 3 ft. Maximum Water Height 6 ft. 4 ft. 8 ft. 6 ft. 10 ft. 8 ft. 12 ft. 10 ft. *Chart demonstrates what size DamitDam is required to control water depth. 3

4 Installation Overview: Equipment List Size and number of Pumps: (2) 3 inch 8 horsepower trash pumps at a minimum are recommended. If smaller or larger pumps are used, discuss with representative prior to installation. Size & Length of Discharge & Suction Hoses: 50 linear feet of discharge hose per pump. 20 linear feet of suction hose per pump. Pumps must be equal in flow rate capability! Heavy Equipment will be needed to place a large dam at the waters edge. Once the dams are placed into the water they become buoyant. If moving water is present, ropes will be needed to restrain the dam as it is being deployed. A DamitDams Portable Cofferdam representative will provide further details when the installation involves moving water. Lifting Arm Equipment Utility knife Duct Tape Plywood Sheets (platform for pumps if Dam needs to be extended) Workers should have water appropriate clothing waders are recommended. A sense of humor Man Power The number of laborers required to install your DamitDams will depend on the following: Size of the DamitDams Water condition Allow for one worker to consistently man the pumps Urgency of the project Experience of laborers working in water conditions Small Dam: 1-4ft 3-4 laborers Medium Dam: 4-8ft... 4 laborers Large Dam: 10-12ft...5 laborers *Contracting with a DamitDams installation team will save you time and money in the long run. Job Site Arrival: Large Dam and Small Dam 1. Your DamitDam will arrive to your job site ready for deployment. 2. Do not attempt to roll the Dam off the truck or place the forks under the Dam. This may damage the Dam and make it unusable. 3. A smaller Dam can be hand lifted and carried to the site by laborers. 4. A larger dam will require heavy equipment to transport the Dam from the truck to the site area starting point. 4

5 Installation Overview: DamitDams : Inflating Directions Easy Does it 1. Place the DamitDam in the water at the edge at a right angle to the bank. 2. Place a pump discharge hose into each inner fill tube. 3. Using on-site water to fill the dam - begin pumping. It is imperative that the 2 - water pumps fill at the same rate. 4. As the water pressure builds - the Dam will start a controlled rollout. 5. Laborers can guide the DamitDam into any configuration your site requires; straight as an arrow, curved, U-shaped, L-shaped etc. Placement: Lake/River 1. A DamitDam can be set up on most water edge surfaces - such as gravel, mud, grass, etc. 2. The starting point of the dam is placed on the bank - at least 5 ft. up on shore - with the Dam opening facing away from the water. 3. The positioning of the DamitDams opening needs to be raised to a higher point than the estimated height of a fully filled DamitDam. This will keep the water from back-flowing. 4. In some cases a berm may need to be built to meet this requirement. 5. To secure the Dam - simply tie ropes to the start of the Dam and then tie/secure the other end of the rope to heavy equipment, trees and or any other unmovable object in the nearby vicinity. Lengthen and Linking DamitDams Using DamitDams patented extension-coupling system; Dams can easily be linked together to form a custom length, continuous water filled barrier/dam. It could circle the globe if need be. 1. Each DamitDam is designed to seamlessly link together by drawing the patented extension-cuffing sleeve over the end of a previously filled cofferdam. 2. Fill tubes are drawn up from the previously filled Dam through openings in the extension cuffing systems. 3. Simply repeat the previous pumping procedure and your Dam can be extended to any length needed. DamitDams Environment Statement Following the environmental guidelines set forth by The Clean Water Act, DamitDams has developed an environmentally friendly method to manage water and protect the environment. We work with Mother Nature - not against her. 5

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AquaDam Applications

AquaDam Applications (Includes Material Specifications) Water Filled Cofferdams LOW-IMPACT, ENVIRONMENTALLY FRIENDLY WATER FILLED COFFERDAMS FOR WATER DIVERSIONS, DEWATERING, FLOOD CONTROL, REMEDIATION,