At least seven permissions for sand mining, many of them given last year, were found to be in violation of norms laid down by the Union ministry of environment and forests.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/seven-sand-mining-permits-now-hang-balance
[2] http://admin.indiaenvironmentportal.org.in/category/author/yogesh-kumar
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-dehradun
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttaranchal-uttarakhand
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dehradun-d
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[7] http://admin.indiaenvironmentportal.org.in/thesaurus/sand-mining
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asan
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/illegal-trade