be removed by the multimedia filter. Citric acid may also be injected into the raw water storage tank to decrease the pH to 4
or 5 PPM.
Supervising Placement of Offshore Intakes. The offshore intakes are the most popular type of saltwater intake. They are
sometimes required due to lack of time, personnel, or equipment required to develop beach wells. In addition, coral
formations sometimes prevent construction of wells. You an either use intakes of the rigid pipe or float type. If possible,
position either type in deep water beyond the surf action, and place intakes in a vertical position. They must also be off the
bottom and beneath the water surface at low tide. In this way, the intakes will keep out foreign matter which may cause wear
on purification equipment. Place the intakes of rigid pipes on supports at are anchored securely in position by pilings. Floats
securely anchored can support intake screens the same as they do in inland surface waters.
Other Types of Wells. Wells are classified into five different types according to their method of construction:
Dug. A dug well is one in which the excavation is made by the use of picks, shovels, spades, or digging equipment, such
as sand buckets or clamshell buckets.
Bored. A bored well is one in which the excavation is made by the use of hand or power augers.
Driven. A driven well is constructed by driving a pointed screen, referred to as a drive point, into the ground. Casings or
lengths of pipe are attached to the drive point as it is being driven into the ground.
Jetted. A jetted well is one in which the excavation is made by use of a high velocity jet of water. However, in some
regions of the Arctic, steam is used for jetting instead of water.
Drilled. A drilled well is one in which the excavation is made by either percussion or rotary drills. The excavated
material is brought to the surface by means of a boiler, sand pump, suction bucket, hollow drill tool, or hydraulic
pressure.
PART L - ENVIRONMENTAL REGULATORY REQUIREMENTS
Supervising Environmental Stewardship. The Army environmental ethic is the operating principle and value governing
individual soldiers, units, and the Army. In relation to the environment you are to care for it by considering the effects of
training operations, logistic activities, managing hazardous materials, and waste properly so that damage to our environment
can be reduced. You are to remind your personnel that doing what is environmentally right helps to ensure that space will be
available to conduct realistic training.
Monitoring Integration. Environmental stewardship must be integrated into everything that units and soldiers do to:
Enhance combat readiness.
Ensure mission completion.
1-42
Previous Page
