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2' <br /> EXISTING SIDEWALK NEW 6" CONCRETE PATCH <br /> lot0- 4" DRAIN ROCK BACKFILL <br /> w <br /> a o <br /> z w <br /> Q <br /> � z <br /> - Z <br /> L <br /> C� <br /> d <br /> z <br /> NEW GROUT BACKFILL <br /> a <br /> z <br /> EXISTING 2" CASING 6,. <br /> w/ 6" MIN. PROTRUSION MIN. K EXISTING 8" BORE HOLE <br /> CEMENT= PORTLAND CEMENT 8" <br /> (TYPES OR V) <br /> GROUT= 94# CEMENT PER <br /> 5-10ga1 H2O <br /> MUSHROOM CAP FOR PRESSURE GROUTING <br /> ( MW- 7S, 8S, &llS) <br />