What is the main issue associated with clam shell sampling?

Clam shell sampling is primarily associated with high expense and slow procedures due to the method of collection. This sampling technique involves the use of a clam shell device, which can be more costly to operate and maintain compared to simpler sampling methods. The gear and apparatus required for effective clam shell sampling can add to overall project expenses, and the process typically takes more time to carry out due to the careful handling of the equipment and the need for precise collection to ensure a representative sample.

Moreover, the logistics involved in setting up the clam shell sampler, performing the sampling, and then properly handling and transporting the sample itself can further contribute to longer operation times compared to quicker methods like using a hand shovel or bucket sampling.

While clam shell sampling can yield high-quality samples when done correctly, the factors of expense and slow procedures are significant drawbacks that can affect project timelines and budgets, making this choice particularly relevant when assessing the challenges associated with this sampling method.