I work for an electrical contractor. I did some underground work and restored the site with new sod. Some of the grass has died. The path of dead/dying grass follows the course of an underground steam line. Surface temperatures were taken. Green/healthy grass was at 68 degrees. Dead/dying grass was at 78 degrees. It is obvious to all that the heat of the steam line is drying out and killing the grass from below. Obvious to everyone but the facilities manager who wants the grass replaced (and another 30 days of watering from a fire hydrant tap). Can anyone direct me to something in writing that addresses the affects on sod from a 212 degree steam line approximately 2 feet below the surface? It would save me an enormous amount of grief. Thank you.