l $ 350 Soil Preparation $ 1,460 Plant Material $ 7,310 Drip Irrigation $ 185 Pecan Shell Mulch $ 1.080 AREA TOTAL $11,190 EFTA00587280 NORTH PERIMETER MISCELLANEOUS WORK Install two yards of topsoil in the stipa grass beds to raise the soil level. In the winter months, install a bio-mat over the