Comparison of the Types of Inspection Programs.
| Type of Inspection | Cycle | Approx. Cost | Remarks |
|---|---|---|---|
| 1. Visual & Sounding | Yearly | $.75/pole | Almost worthless. Even misses danger poles. Does nothing to maintain your plant. |
| 2. Visual, Sonic Inspect, & Bore | 2-3 Years | $2.80/pole | Finds 40-50% of the bad poles. Caution must be exercised or good poles with shake are thrown out. Should find most danger poles. Does nothing to maintain plant. |
| 3. Visual, Sound & Bore | 2-3 Years | $2.00/pole | Finds about 50-60% of the bad poles and most danger poles. Does nothing to maintain plant. |
| 4. Visual, Partial Excavate, Sound & Bore | 3-5 Years | $2-$4.00/pole | 80-90% of the rejects can be located. Fair inspection but does not prolong the life of pole plant. |
| 5. Excavate 6-8″ around entire circumference, inspect and treat to 18″ all poles with decay or defects. | 5-6 Years | $6-$7.00/pole | 90-95% of rejects can be located. Good inspection and most of the poles that would fail early are treated. Usually treat approximately 20% or more of the older poles. |
| 6. Visual, Excavate, Sound & Bore and Groundline Treat | 8-10 Yrs. | $9-$12/pole | 99% of all rejects are located. Most economical in long run as the life of pole plant is extended. |