Irrigation Many people consider a professionally installed lawn sprinkler system to be a luxury. Not true! If you are watering your landscaping with a hose or using portable sprinklers, then you are losing money in the long run. Lee Engineering has been the leader in Dallas Fort Worth irrigation sprinkler repair and installation since 1971. Drainage Non-existent or improper drainage systems around your home can cause hazardous water accumulations and structural damage to your foundation. The experts at Lee Engineering are trained to evaluate your individual situation and provide the right solution for your drainage needs. Foundation Preservation Structural foundation repair is expensive and may not be successful if the clay soil continues to destabilize around your home. A licensed professional engineer will tell you that balanced moisture is the first step to foundation stabilization.