Workers from APAC Kansas, based in Emporia, apply oil and gravel to D Street in Hillsboro Thursday morning as part of the chip-seal process that is intended to extend the life of asphalt streets. The kind of gravel laid onto the street left D Street resembling a country road for the ensuring days as dust filled the air and coated adjacent homes and businesses. Hillsboro City Administrator Larry Paine said the dusty conditions are a trade-off for using a less expensive gravel?about half the price?than has been used in chip-seal projects on residential streets in previous years. Paine said Monday several residents have called to complain about the dust. He said the good news is that D Street won?t need another chip-seal treatment for 10 years.