Viking Construction Micro Surfacing With Akzo Nobel (Texas Contractor, 6/2/2008) Bexar County maintains streets surrounding the city of San Antonio Barry Dunn presents at TxDot Pavement Preservation Seminar (10/4/2005) Dunn presented on the best practices for micro-surfacing and applying slurry seals. Slurry seal key to city's road maintenance Austin TX Georgetown, TX-based road contractor, Viking Construction Inc. applies approximately 500,000 square yards of slurry seal to Austin's residential streets as part of an ambitious ongoing preservation program.