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301-206-4001 
Weekdays: 8:00 am - 6:00 pm 
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14501 Sweitzer Lane
Laurel, MD 20707  

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301-206-4001
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TTY: 301-206-8345

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patuxent watershed group.JPG
Patuxent Reservoir Watershed Protection Group
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Aerial photo taken August 2, 2021. The Cake Storage Facility with it’s signature blue canopy is at the lower left. The slab for the Solids Building is to the right of that with the chemical storage tanks and the new belt filter presses still under wrap. Above the Solids Building is our new Cambi Thermal Hydrolysis Process equipment (steel vertical tanks) which was delivered to the site last week. This equipment is key to this entire project and will allow us to produce the Class A biosolids.
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To the right of the Cambi equipment work is ongoing for the concrete slab that will support the Cake Silos. These silos will store the sludge material that is delivered from the other WRRFs. From the silos, the material will be fed into the Cambi process.
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This is a little bit closer view of the Storage Silo slab construction
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Cambi equipment delivered and set up
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The Anaerobic Digesters, the two tall, round, concrete tanks in the middle of this picture are being prepared for their final coating. To the left slabs are prepped for the Digester Control Building.
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This fine example of finished concrete work is the Side Stream Treatment Tank. Here the nitrogen will be removed from the liquids that are squeezed out of the biosolids through the belt filter presses in the Solids Building.
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Lower right is the Combined Heat & Power area where excavation and the slabs being poured to support the gas treatment equipment, the boilers and the generators.
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This is a close-up view of the slab construction for the electrical vault at the Gas Treatment Facility.