(However, if the geological conditions are especially difficult or access is extremely limited, drilling can cost $30-$50 a foot or more.) For example, the sustainable Arizona homesteaders at ByExample.com report paying $6,750 to have well drilled 280' deep, or about $24/foot.
A second lieutenant (grade O-1) is usually promoted to first lieutenant (grade O-2) after 18 months in the Army or 24 months in the Air Force and Marine Corps.The difference between the two ranks is slight, primarily being experience and higher pay. second lieutenant (grade O-1) is usually promoted to first lieutenant (grade O-2) after 18 months in the Army or 24 months in the Air Force and Marine Corps.
A corporal may be promoted to sergeant. an E-5 and also an NCO. A sergeant's pay begins at $2,090 per month and increases with time-in-grade, to a maximum pay for a sergeant is $2,966 after 12 years of service. Related Reading: How to Become a Warrant Officer in the Marine Corps.