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TRENCHING, EXCAVATION AND BACKFILL 701.1 GENERAL …
taosdesignbuild.comTRENCHING, EXCAVATION AND BACKFILL . 701.1 GENERAL . Trench excavation and backfill for underground utilities, sanitary sewer, storm sewer, water lines, and appurtenances shall conform to these specifications or as specified in the Supplemental Technical Specifications or as authorized, in writing, by the ENGINEER. 701.2 REFERENCES . 701.2.1 ASTM: