Down syndrome. Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is typically associated with physical growth delays, characteristic facial features and mild to moderate intellectual disability.
Hiring a Yard Cleanup Service Cost. The cost of a professional yard cleanup depends on the size of your property, the number of trees, and whether the leaves and debris can be left curbside or must be hauled away. For a half-acre lawn with a fair amount of trees, budget anywhere from $200 to $500. Saves time - Hiring a professional yard cleaning service saves you a lot of time and effort. You can spend the time you would have been working in the yard doing something a little more fun.
1 $150 to $400 per hour for complete site clearing, depending upon the machinery necessary for the job (usually including a large bull dozer); 2  Grading-sub-grading the area for a slab on grade is going to cost roughly $1.43 per square yard for a total of $100; and. This tends to have a life span of 10 to 30 years and will need treatment every six to ten years to maintain its good looks and durability. 2  This is known as a macadam treatment and will average around $2 per square foot, or roughly $1200 every six years.