Modified Open-Cut River Crossing The AQUASHIELD provides an alternative to directional drilled pipeline river crossings utilizing an environmentally safe and cost-effective application of the modified open-cut river crossing method for large pipelines. This AQUASHIELD Welding Chamber is patented and is in the developmental and proving stage. The concept is basic, utilizing proven sealing and lineup procedures, and will provide significant cost savings for river crossings by pipelines once available.
ADVANTAGES OF AQUASHIELD
	LOWER COST Viable alternatives in the industry will lower market prices for average river crossings. Visual inspection / recording thoughout river crossing operation. Staging area for pipeline crossing considerably smaller than horizontal directional drilling. Ground conditions less of a concern - large and mixed rock subsurfaces acceptable for any size of pipeline river crossing. Conventional technologies. No spills of directional drilling fluids. Prebending of pipe allows tight radius turns in the river crossing. Smaller (shorter) river crossings. Time considerations - large diameter pipeline crossings may be completed in less time.