We excavated approximately 700,000 cubic yards of dirt out of the existing lakes and mixed part of it with existing arsenic impacted soils in order to reduce the arsenic content to approved target levels for residential use. Once it was mixed, the material was tested and if it meets target levels, it was then placed, spread and compacted to bring the lots up to proper slab subgrade. Another environmental issue which further complicated construction was impacted water. Underground contaminated water existed in various areas of the project thus preventing us from dewatering proposed lakes. Due to the nature of the soils in these wet conditions, conventional excavators could not fully exploit maximum specified lake depth. We brought in a long stick excavator to extract the much needed fill that standard excavators would leave behind. This minimized the import of fill and saved the owner a lot of money. We also installed full drainage, force main, re-use water, lift station, water and sewer for this project. The contaminated ground water also presented a challenge for underground installation. We had to dewater in order to install pipe below the water table. The water we extracted had to be placed in a series of holding tanks and tested before it could be released.