Gurugram, Jan. 21 -- Dust from uncovered construction debris and silica stored along busy city roads and service lanes continues to choke several parts of Gurugram, despite restrictions under Stage 4 of the Graded Response Action Plan (Grap), an HT spot check on Tuesday found. The spot check revealed at least three commercial and several residential projects operating alongside makeshift supplier shops that had kept bricks, sand and cement uncovered along busy stretches in Sectors 67, 46 and 72. These activities were contributing to high dust levels on roads. Under GRAP norms, open storage of sand, stone dust, cement, bricks or soil is prohibited. Construction material is permitted to be sold only from authorised premises with covered storage and adequate dust suppression measures in place. On the service lane of Arya Samaj Marg, excavation work was underway at two sites, with heaps of sand spread across a 200-metre stretch. Digging and excavation were also underway at a commercial project along the same road. At another site on the other end of Arya Samaj Marg, workers were carrying out tiling work at a building. In Sector 66 near Golf Estate Road, a commercial project had earthwork, concrete mixing activities running through most of the day. Supplies were being fulfilled by small shops operating along service roads. Several makeshift supplier sites were found along Golf Course Extension Road and Prajapati Road, where sand and plastering-grade sand were stored loose. "Every time any vehicle passes by, the silica blows into the air, irritating our eyes and throats. It becomes unbearable," said a daily commuter. On Maidawas Road, where a private showroom was under construction, a nearby makeshift shop supplied materials. "To meet daily demand, we have to provide stone dust for plastering. Air quality is secondary when work has to continue," a worker at the shop said. Along NKV Residency Road, small suppliers were operating from a large plot. "Transportation costs are high, but materials are supplied daily. Once pollution levels fall, rates will also come down," said a shopowner. A Haryana State Pollution Control Board official said inspection teams were conducting routine checks and most commercial sites had temporarily shut operations. "Those still violating the norms will face hefty fines," the official said....