(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.
Selection for commander -- the O-4 officer pay grade equivalent to a major in the Army, Air Force or Marine Corps -- requires that the candidate for promotion must have served three years as a lieutenant to meet the required time-in-grade.A lieutenant must also have between nine and 11 years of military service.owever, these officers must have also served two years in the rank of ensign to satisfy the time-in-grade requirement for recommendation to the O-3 selection board for promotion.