Advantages and Limitations Sample Clauses

Advantages and Limitations. The seismic refraction technique, when properly employed, is the most accurate of the geophysical methods for determining subsurface layering and materials. It is extremely effective in that as much as 2,000 linear feet or more of profiling can be acquired in a field day. The resulting profiles can be used to minimize drilling and place drilling at locations where borehole information will be maximized resulting in cost-effective exploration. A standard drilling program runs the risk of missing key locations due to drillhole spacing. This risk is substantially reduced when refraction is used. In summary, the advantages and limitations of the seismic techniques are: Advantages: * Material identification * Subsurface data over broader areas at less cost than drilling * Relatively accurate depth determination * Correlation between drillholes * Preliminary results available almost immediately * Rapid data processing Limitations: * As depth of interest and geophone spacing increases, resolution decreases * Thin layers may be undetected * Velocity inversions may add uncertainty to calculations * Susceptible to noise interference in urban areas, which require use of grounded cables and equipment, signal enhancement and alternative energy sources. June 8, 2020 Mr. ▇▇▇▇▇▇ ▇▇▇▇, ▇▇ ▇▇▇▇▇▇▇▇ & Masters, Inc. ▇▇▇ ▇▇▇▇▇▇▇▇▇▇ ▇▇., ▇▇▇▇▇ ▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Dear ▇▇. ▇▇▇▇, ▇▇▇▇▇▇▇▇ Consulting Engineering & Land Surveying, D.P.C. (SCE) is pleased to submit this proposal to perform supplemental services in support of the referenced project. The proposed work is beyond the scope and fee of our original contract.