| Total requests for Jul 2011: 4,093 |
| Unique requests | Total requests | Query | Documents returned |
| 30 | 34 | SARA | 995 |
| 23 | 29 | rcra | 18,655 |
| 14 | 14 | superfund | 4,279 |
| 14 | 14 | cerclis | 1,075 |
| 13 | 15 | section 122 | 941 |
| 10 | 10 | CERCLA - 02-2007-2014 | 2,387 |
| 9 | 11 | SARA TITLE III | 12,004 |
| 8 | 10 | New Jersey | 13,346 |
| 8 | 9 | ARAR | 1,200 |
| 8 | 8 | NFRAP | 108 |
| 7 | 11 | lead | 2,454 |
| 7 | 11 | Ringwood | 19,301 |
| 7 | 10 | MSD990866329 | 150 |
| 7 | 9 | five year review | 2,114 |
| 7 | 7 | map | 1,972 |
| 7 | 7 | consumer product safety act | 382 |
| 7 | 7 | 40 CFR 302.4 | 578 |
| 6 | 9 | texas | 1,074 |
| 6 | 8 | NJD001217496 | 0 |
| 6 | 7 | NYD987001435 | 0 |
| 6 | 6 | mercury | 1,154 |
| 6 | 6 | love canal | 174 |
| 6 | 6 | epcra | 337 |
| 6 | 6 | Hazardous waste | 3,029 |
| 6 | 6 | EECA | 439 |
| 5 | 7 | superfund sites | 17,074 |
| 5 | 7 | US Scrap | 1,174 |
| 5 | 6 | pennsylvania | 1,765 |
| 5 | 5 | groundwater | 2,590 |
| 5 | 5 | georgia | 1,138 |
| 5 | 5 | brownfields | 1,010 |
| 5 | 5 | arizona | 549 |
| 5 | 5 | LEPC | 164 |
| 4 | 11 | California | 14,437 |
| 4 | 6 | tar creek | 18,138 |
| 4 | 6 | asbestos | 1,075 |
| 4 | 5 | continuous release | 886 |
| 4 | 5 | compensation | 21,830 |
| 4 | 5 | Publications | 2,118 |
| 4 | 5 | NPL | 2,650 |
| 4 | 5 | NJ | 1,078 |
| 4 | 4 | reportable quantities | 1,541 |
| 4 | 4 | phytoremediation | 178 |
| 4 | 4 | ohio | 1,120 |
| 4 | 4 | arsenic | 1,080 |
| 4 | 4 | REPORTING | 1,685 |
| 4 | 4 | Endangered Species Act | 1,080 |
| 4 | 4 | 47 fr 2554-02 | 26 |
| 3 | 9 | louisiana | 31,586 |
| 3 | 8 | MONTANA | 429 |
| 3 | 6 | TXD088360813 | 18,999 |
| 3 | 5 | sw-846 | 1,212 |
| 3 | 5 | mold | 111 |
| 3 | 5 | local emergency planning committee LEPC | 127 |
| 3 | 5 | hudson river | 24,911 |
| 3 | 5 | bioremediation | 2,378 |
| 3 | 5 | benton louisiana | 43,604 |
| 3 | 5 | Woburn | 79 |
| 3 | 5 | CAD983652033 | 0 |
| 3 | 5 | 40 CFR Part 763 | 26,351 |
| 3 | 4 | orlando | 99 |
| 3 | 4 | maryland | 1,080 |
| 3 | 4 | illinois | 1,122 |
| 3 | 4 | ford | 346 |
| 3 | 4 | bunker hill | 261 |
| 3 | 4 | ROD | 2,087 |
| 3 | 3 | spim | 165 |
| 3 | 3 | osc | 350 |
| 3 | 3 | national priority list | 2,630 |
| 3 | 3 | michigan | 1,056 |
| 3 | 3 | liens | 324 |
| 3 | 3 | hazardous substances | 2,366 |
| 3 | 3 | glossary | 712 |
| 3 | 3 | formaldehyde | 108 |
| 3 | 3 | case study | 1,830 |
| 3 | 3 | Seattle | 812 |
| 3 | 3 | RQ | 201 |
| 3 | 3 | R04-00079 | 3 |
| 3 | 3 | Pad160960605 | 0 |
| 3 | 3 | OHD980509905 | 0 |
| 2 | 7 | uranium | 15,192 |
| 2 | 7 | FLD004061925. | 0 |
| 2 | 6 | Onondaga | 14,478 |
| 2 | 5 | monitoring | 23,924 |
| 2 | 5 | minnesota | 1,294 |
| 2 | 5 | koppers | 153 |
| 2 | 5 | epa labs | 23,664 |
| 2 | 5 | az | 128 |
| 2 | 5 | UTD081834277 | 6 |
| 2 | 5 | 1-bromo-2-chloroethane | 0 |
| 2 | 5 | 08648 | 1 |
| 2 | 4 | spill | 1,310 |
| 2 | 4 | gasoline | 52,938 |
| 2 | 4 | anaconda montana | 22,856 |
| 2 | 4 | San Gabriel Valley Area 3 | 25,799 |
| 2 | 4 | Resource CONSERVATION RECOVERY ACT | 1,320 |
| 2 | 4 | Cerclis ID | 25,817 |
| 2 | 4 | 823-b-98-004 | 277 |
| 2 | 4 | 08854 | 2 |
| 2 | 3 | wrongful lien | 33,001 |
| 2 | 3 | who created this problem | 2,620 |