| Total requests for Feb 2011: 233 |
| Unique requests | Total requests | Query | Documents returned |
| 3 | 5 | agriculture | 903 |
| 2 | 7 | watersheds | 1,365 |
| 2 | 3 | acid mine drainage | 469 |
| 2 | 2 | WASP | 60 |
| 1 | 5 | washington watersheds | 632 |
| 1 | 4 | lead in DC drinking water | 53 |
| 1 | 4 | construction projects | 24,264 |
| 1 | 3 | william Agudo | 0 |
| 1 | 3 | stoping pollution chesapeake bay | 9 |
| 1 | 3 | podcast | 6 |
| 1 | 3 | form 14a | 12 |
| 1 | 3 | US EPA | 69,796 |
| 1 | 2 | wip phase ii deadline | 55,501 |
| 1 | 2 | william argudo | 0 |
| 1 | 2 | tmdl timeline | 55 |
| 1 | 2 | stroubles implementations | 1 |
| 1 | 2 | stoping nitrogen phosphorus pollution chesapeake bay | 9 |
| 1 | 2 | sludge forms federal sludge program discharge monitoring reports | 33 |
| 1 | 2 | robinson river comment 7 February | 16 |
| 1 | 2 | region4 | 554 |
| 1 | 2 | radionuclides | 2,229 |
| 1 | 2 | pennsylvania memorandum of agreement npdes | 64 |
| 1 | 2 | no action flow | 677 |
| 1 | 2 | new jersey lake | 49,295 |
| 1 | 2 | living machine | 4 |
| 1 | 2 | fact sheet wasa | 10 |
| 1 | 2 | environmental awards | 110 |
| 1 | 2 | drinking water distribution in 19004 | 1,164 |
| 1 | 2 | cost | 632 |
| 1 | 2 | compare WIP by states | 41 |
| 1 | 2 | buniess | 0 |
| 1 | 2 | WV | 1,580 |
| 1 | 2 | Seal of District of Columbia | 6 |
| 1 | 2 | Notification | 76 |
| 1 | 2 | Mississippi | 539 |
| 1 | 2 | CAFO | 52,008 |
| 1 | 2 | 15963 | 2 |
| 1 | 1 | wip deadline | 3 |
| 1 | 1 | wet | 425 |
| 1 | 1 | well permits | 1,080 |
| 1 | 1 | weed control | 35 |
| 1 | 1 | watershed map | 552 |
| 1 | 1 | water quality act | 1,300 |
| 1 | 1 | water audit | 41 |
| 1 | 1 | warrington pa | 2 |
| 1 | 1 | urban high low intensity | 1 |
| 1 | 1 | u.s. epa public notice | 1,370 |
| 1 | 1 | tmdl schedule | 420 |
| 1 | 1 | study on the lead in drinking water in D. C. | 130 |
| 1 | 1 | stroublesimplementations | 0 |
| 1 | 1 | stormwater floatables data | 17 |
| 1 | 1 | storm drainage inlets | 72 |
| 1 | 1 | stoping pollution' | 44 |
| 1 | 1 | stooping pollution chesapeake bay | 0 |
| 1 | 1 | sludge forms | 74 |
| 1 | 1 | selecting tmdl sites | 441 |
| 1 | 1 | sea level rise | 55 |
| 1 | 1 | robinson river comment 7 febuary | 6 |
| 1 | 1 | robin | 39 |
| 1 | 1 | road salt | 74 |
| 1 | 1 | river basins | 1,010 |
| 1 | 1 | requires in a TMDL | 1,270 |
| 1 | 1 | rain gardens | 46 |
| 1 | 1 | poultry litter virginia | 53 |
| 1 | 1 | potomac gorge water pollution | 2 |
| 1 | 1 | pittsburgh pennsylvania | 101 |
| 1 | 1 | piedmont coastal plain | 55 |
| 1 | 1 | phase II | 586 |
| 1 | 1 | phase II wip | 8 |
| 1 | 1 | pennsylvania | 1,710 |
| 1 | 1 | pennsylvania memorandum of agreement | 123 |
| 1 | 1 | ohio | 141 |
| 1 | 1 | ohio funding for septic line replacement | 12 |
| 1 | 1 | nutrient management plans | 569 |
| 1 | 1 | north carolina | 19 |
| 1 | 1 | non-point source air pollution | 246 |
| 1 | 1 | nitrofication requirements | 0 |
| 1 | 1 | nitrates | 184 |
| 1 | 1 | municipalities | 593 |
| 1 | 1 | ms4 | 378 |
| 1 | 1 | montana | 5 |
| 1 | 1 | modelos | 838 |
| 1 | 1 | missouri | 10 |
| 1 | 1 | methlymercury | 327 |
| 1 | 1 | measurements | 799 |
| 1 | 1 | mapper | 390 |
| 1 | 1 | limits | 1,030 |
| 1 | 1 | lead in water meters | 110 |
| 1 | 1 | lancaster pa | 66 |
| 1 | 1 | kanawha River site | 4 |
| 1 | 1 | internship | 5 |
| 1 | 1 | intensity | 186 |
| 1 | 1 | harbold | 0 |
| 1 | 1 | geologic areas of baltimore county | 61 |
| 1 | 1 | front foot fee | 29 |
| 1 | 1 | for 2011 Nebraska | 3 |
| 1 | 1 | fecal coliform | 487 |
| 1 | 1 | fact sheet wasa lead | 8 |
| 1 | 1 | epa hq | 210 |
| 1 | 1 | employment | 19 |
| 1 | 1 | employment opportunities | 32 |
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