| Total requests for Dec 2011: 503 |
| Unique requests | Total requests | Query | Documents returned |
| 16 | 26 | Method 7 | 13,583 |
| 9 | 11 | 351a | 1 |
| 7 | 9 | EPA 6010 | 312 |
| 6 | 13 | SWS 846 | 1,670 |
| 6 | 6 | 9070B | 0 |
| 3 | 8 | DIOXINE | 22,746 |
| 3 | 6 | EPA method 1631 | 443 |
| 3 | 4 | chlorin | 25,274 |
| 3 | 3 | pcb | 92 |
| 3 | 3 | nano | 9 |
| 3 | 3 | 6010c | 1 |
| 2 | 5 | method 3060 A | 35,201 |
| 2 | 3 | asbestos | 18 |
| 2 | 3 | Titanium dioxide | 4 |
| 2 | 3 | FATTY ACID | 30,652 |
| 2 | 2 | silica | 41 |
| 2 | 2 | naphthalene | 3 |
| 2 | 2 | 8270D | 0 |
| 1 | 7 | methylmercury | 40,048 |
| 1 | 5 | mercaptanes | 17,019 |
| 1 | 5 | WHO-2 | 9,471 |
| 1 | 5 | 2185 Good Automated Laboratory Praqctice | 50,219 |
| 1 | 4 | extraction 3510c | 48,250 |
| 1 | 4 | ILM05.0 | 24,674 |
| 1 | 4 | EPA 8270D | 23,475 |
| 1 | 4 | Asbestos in building | 43,431 |
| 1 | 3 | ma002 | 28,866 |
| 1 | 3 | herbicides 8151 | 27,525 |
| 1 | 3 | epa testing | 28,913 |
| 1 | 3 | by capillary electrophoresis | 33,035 |
| 1 | 3 | assay of acetone | 34,002 |
| 1 | 3 | QAM TOOLKIT | 0 |
| 1 | 3 | METHOD 7C | 57,145 |
| 1 | 3 | ISM01.2 | 58,867 |
| 1 | 3 | Endothall | 31,500 |
| 1 | 3 | Alkaline Digestion for Hexavalent Chromium | 29,368 |
| 1 | 3 | 624 | 30,280 |
| 1 | 3 | 330.5 | 1 |
| 1 | 3 | 1631 | 26,468 |
| 1 | 3 | 0335.2 | 29,066 |
| 1 | 2 | triazoles | 0 |
| 1 | 2 | toxicogenomics | 47,204 |
| 1 | 2 | theophylline | 1 |
| 1 | 2 | the normal method of detecting benzophenone | 0 |
| 1 | 2 | sulfur water | 49,441 |
| 1 | 2 | stack metals sampling | 41,760 |
| 1 | 2 | stack emission | 41,777 |
| 1 | 2 | quantic | 0 |
| 1 | 2 | neutralized formaldehyde | 2 |
| 1 | 2 | models for risk assessment | 119 |
| 1 | 2 | model web | 307 |
| 1 | 2 | mil std810 | 0 |
| 1 | 2 | iris | 141 |
| 1 | 2 | gc methods | 43,945 |
| 1 | 2 | gc methods for petroleum products-8260 | 43,899 |
| 1 | 2 | exposure factors handbook | 46,709 |
| 1 | 2 | epa-to-11a | 47,499 |
| 1 | 2 | dibromochloropropane | 9 |
| 1 | 2 | classification of carcinogenic substances | 4 |
| 1 | 2 | TOOLKIT | 19 |
| 1 | 2 | SOIL 9070B | 0 |
| 1 | 2 | SM 3111B | 0 |
| 1 | 2 | RfD Cancer threshold | 0 |
| 1 | 2 | PM2.5 | 53 |
| 1 | 2 | PM2.5 Hi Vol | 47,714 |
| 1 | 2 | Office of Science Policy | 47,699 |
| 1 | 2 | Nanomaterials research programme | 25 |
| 1 | 2 | NWTPH | 43,099 |
| 1 | 2 | ME.CK.DCQ.01 | 0 |
| 1 | 2 | EPA 3050B | 46,050 |
| 1 | 2 | CLP Methods | 44,150 |
| 1 | 2 | CLP Metals | 13,800 |
| 1 | 2 | CDM 030034 | 0 |
| 1 | 2 | BROMATE | 47,400 |
| 1 | 2 | AT123D | 49,751 |
| 1 | 2 | AMMONIA | 67 |
| 1 | 2 | AES-OA-cod-0181 | 48,799 |
| 1 | 2 | 8082 | 44,651 |
| 1 | 2 | 6010 | 3 |
| 1 | 2 | 525.1 | 0 |
| 1 | 2 | 524.2 | 1 |
| 1 | 2 | 40cfr part 136 | 64,003 |
| 1 | 2 | 376 sulfide | 45,452 |
| 1 | 2 | 365.1 | 1 |
| 1 | 2 | 245.1 | 2 |
| 1 | 2 | 10 | 47,240 |
| 1 | 2 | 0345.1 | 48,200 |
| 1 | 1 | wuantic | 0 |
| 1 | 1 | volatile fatty acid analysis | 9 |
| 1 | 1 | trph | 87,800 |
| 1 | 1 | trph vs tph | 0 |
| 1 | 1 | triple r | 3 |
| 1 | 1 | tributyltin | 5 |
| 1 | 1 | toxicogenimics | 0 |
| 1 | 1 | totalganic carbon | 113 |
| 1 | 1 | total nitrogen | 121 |
| 1 | 1 | tools | 332 |
| 1 | 1 | tolyazoles | 0 |
| 1 | 1 | the normal method of benzophenone | 0 |
| 1 | 1 | the nomal method of benzophenone | 0 |
| 1 | 1 | tetrahydrofuran | 1 |