Itagar, April 7: In view of 'irksome' environmental pollution affecting the commuters owing to ongoing construction works for the four-laning of NH-415, the Capital Complex District Magistrate has, vide an order, directed the concessioire, TK Engineering Consortium Pvt Ltd to sprinkle water at regular intervals every day along the highway from Papu llah to Vivek Vihar (Itagar) where construction activities are being taken up, by engaging sprinkling vehicles between 10 am to 12 noon, 2 pm to 4 pm and 7 pm to 9 pm.