| Total requests for Dec 2011: 278 |
| Unique requests | Total requests | Query | Documents returned |
| 2 | 3 | michigan | 2,460 |
| 2 | 2 | mercury | 660 |
| 1 | 16 | michigan annual report 404 | 24,793 |
| 1 | 9 | 625 mills rd. joliet il. | 31,533 |
| 1 | 7 | Westland MI | 14,960 |
| 1 | 5 | southern illinois | 36,005 |
| 1 | 5 | amphenol | 16,903 |
| 1 | 5 | Tecumseh Products | 20 |
| 1 | 4 | vessels ballast | 19,183 |
| 1 | 3 | milwaukee | 33,825 |
| 1 | 3 | hydropene | 35,013 |
| 1 | 3 | environmental liabilities | 1,343 |
| 1 | 3 | detroit | 31,522 |
| 1 | 3 | brandt pike | 31,936 |
| 1 | 3 | biodiesel production | 57,672 |
| 1 | 3 | RCRA sites | 59,533 |
| 1 | 3 | PCBs | 32,133 |
| 1 | 3 | Enbridge oil spillclassifications listed wage determination | 62,333 |
| 1 | 2 | trichloroethylene | 50,215 |
| 1 | 2 | soil | 1,220 |
| 1 | 2 | precor | 44,949 |
| 1 | 2 | pesticides contact | 43,398 |
| 1 | 2 | perry derrick | 46,651 |
| 1 | 2 | michele | 1 |
| 1 | 2 | mancelona | 43,757 |
| 1 | 2 | lincoln creek | 27,211 |
| 1 | 2 | enforceable | 12 |
| 1 | 2 | dioxin sediment | 283 |
| 1 | 2 | database | 548 |
| 1 | 2 | colorado community ditch | 39,906 |
| 1 | 2 | ch2m hill awards | 53,003 |
| 1 | 2 | ch2m hill awards waukegan | 21,449 |
| 1 | 2 | axel creek clean up | 43,249 |
| 1 | 2 | allyn stern | 0 |
| 1 | 2 | Somers Point New Jersey | 45,749 |
| 1 | 2 | Region 5 Superfund attorney | 502 |
| 1 | 2 | Region 5 Superfund attorney Steve | 43,460 |
| 1 | 2 | RCRA sites US Ecology | 44,360 |
| 1 | 2 | RCRA sites US Ecology Sheffield Il | 44,300 |
| 1 | 2 | Prevailing wage | 0 |
| 1 | 2 | Mickey | 170 |
| 1 | 2 | 60433 | 0 |
| 1 | 2 | 56-93-9 | 0 |
| 1 | 2 | 46112 | 47,399 |
| 1 | 1 | youngstown | 5 |
| 1 | 1 | wti | 8 |
| 1 | 1 | where is the municipal solid waste site | 1,190 |
| 1 | 1 | wayne county | 0 |
| 1 | 1 | water intake quality | 243 |
| 1 | 1 | water division | 1,010 |
| 1 | 1 | virco | 0 |
| 1 | 1 | victory | 55 |
| 1 | 1 | validation | 335 |
| 1 | 1 | used tires | 228 |
| 1 | 1 | triad hunter | 0 |
| 1 | 1 | training | 903 |
| 1 | 1 | training storm water inspector | 24 |
| 1 | 1 | thornville road dump | 0 |
| 1 | 1 | telecommute | 1 |
| 1 | 1 | sumner ave indianapolis | 0 |
| 1 | 1 | soil gas | 535 |
| 1 | 1 | sharps | 93 |
| 1 | 1 | sdwis system administrator | 1 |
| 1 | 1 | sangamo | 85,800 |
| 1 | 1 | ryan bahr | 1 |
| 1 | 1 | rouge plant | 2 |
| 1 | 1 | resources | 1,180 |
| 1 | 1 | region v | 9 |
| 1 | 1 | region v air program | 9 |
| 1 | 1 | region 4 | 116,000 |
| 1 | 1 | raw sewage | 2 |
| 1 | 1 | pine grove | 1 |
| 1 | 1 | petro cell | 0 |
| 1 | 1 | perry | 62 |
| 1 | 1 | permits | 1,420 |
| 1 | 1 | pce in moraine ohio 2010 | 3 |
| 1 | 1 | osha | 97,000 |
| 1 | 1 | organic mercury | 410 |
| 1 | 1 | ohio mound | 38 |
| 1 | 1 | northfield | 3 |
| 1 | 1 | new boston | 0 |
| 1 | 1 | mound | 69 |
| 1 | 1 | morton grove | 122,000 |
| 1 | 1 | mississippi | 5 |
| 1 | 1 | miscarriages ohio | 4 |
| 1 | 1 | milwaukee river | 116 |
| 1 | 1 | methylmercury | 28 |
| 1 | 1 | methoprene | 1 |
| 1 | 1 | methopene | 0 |
| 1 | 1 | mervis | 0 |
| 1 | 1 | maxiflex | 0 |
| 1 | 1 | map | 861 |
| 1 | 1 | mancelona TCE plume | 2 |
| 1 | 1 | lindane | 122,000 |
| 1 | 1 | lincoln | 52 |
| 1 | 1 | lemon lane landfill | 1 |
| 1 | 1 | ledge roadf | 0 |
| 1 | 1 | ledge road | 14 |
| 1 | 1 | lead paint | 8 |
| 1 | 1 | lead paint removal | 23 |
| 1 | 1 | lead paint cert. | 162 |