SURAT: Eight more closure notices have been issued to textile dyeing and printing units in India for breaking air and water pollution rules, bringing to 37 the total number of notices handed out by Gujarat Pollution Control Board (GPCB) in recent weeks. The units, at Sachin, Pandesara, Kim and Palsana, had been using illegal fuel such as petcoke and other hazardous materials to run heavy duty boilers.