| Total requests for Dec 2010: 180 |
| Unique requests | Total requests | Query | Documents returned |
| 3 | 3 | Virginia WIP | 8 |
| 2 | 2 | 303d | 714 |
| 1 | 6 | TMDL laboratory testing | 3,148 |
| 1 | 5 | 17019 | 18,123 |
| 1 | 4 | requirement for industrial spill prevention plan | 28 |
| 1 | 3 | scenario builder | 85 |
| 1 | 3 | river watershed tmdl | 40,413 |
| 1 | 3 | appendix x | 321 |
| 1 | 3 | Conestoga headwaters | 3 |
| 1 | 2 | wastewater jurisdiction map | 55,025 |
| 1 | 2 | septic tanks | 474 |
| 1 | 2 | section 319 | 52,311 |
| 1 | 2 | return to compliance | 51,590 |
| 1 | 2 | new haven meriden waterbury | 53,999 |
| 1 | 2 | mckees run | 704 |
| 1 | 2 | keough | 1 |
| 1 | 2 | funding for public sewer installation | 177 |
| 1 | 2 | contingency plan | 32 |
| 1 | 2 | chuck yingling | 2 |
| 1 | 2 | chesapeake bay | 291 |
| 1 | 2 | chesapeake Bay rivers shepe ifles | 0 |
| 1 | 2 | capacasa director water protection | 963 |
| 1 | 2 | bridgeport ct aquifer | 59,499 |
| 1 | 2 | bge TMDL laboratory testing | 0 |
| 1 | 2 | FOG best management practices | 10,001 |
| 1 | 1 | yingling | 2 |
| 1 | 1 | watershed map | 552 |
| 1 | 1 | waterbury ct | 0 |
| 1 | 1 | wastewater collection map | 132 |
| 1 | 1 | transportation pollution | 449 |
| 1 | 1 | taxdas | 0 |
| 1 | 1 | taxas\ | 33 |
| 1 | 1 | susquehanna river | 307 |
| 1 | 1 | statement on bay tmdl comment period | 109 |
| 1 | 1 | spill prevention plan | 52 |
| 1 | 1 | somerset pa | 74 |
| 1 | 1 | soft vs hard water | 4 |
| 1 | 1 | sediment | 894 |
| 1 | 1 | schuylkill | 3 |
| 1 | 1 | sampling | 1,030 |
| 1 | 1 | samplertester | 0 |
| 1 | 1 | sampler | 927 |
| 1 | 1 | region 2 | 1,220 |
| 1 | 1 | reasonable assurance | 1,000 |
| 1 | 1 | public sewer conversion project | 88 |
| 1 | 1 | public notice | 1,540 |
| 1 | 1 | public comment | 1,060 |
| 1 | 1 | prince george va | 25 |
| 1 | 1 | oklahomabird creek | 0 |
| 1 | 1 | occoquan river | 7 |
| 1 | 1 | occoquan river chesapeake bay watershed | 6 |
| 1 | 1 | occoquan river chesapeake bay tributary | 6 |
| 1 | 1 | november 4 2009 letter | 107 |
| 1 | 1 | national \drinking water standards | 1,450 |
| 1 | 1 | mycelium | 467 |
| 1 | 1 | ms4 | 227 |
| 1 | 1 | monitoring | 1,060 |
| 1 | 1 | monitor water quality | 474 |
| 1 | 1 | model | 1,030 |
| 1 | 1 | mill creek | 227 |
| 1 | 1 | manganese | 412 |
| 1 | 1 | manganese interferences | 0 |
| 1 | 1 | manganese dpd | 0 |
| 1 | 1 | livestock fencing | 7 |
| 1 | 1 | lawn | 99 |
| 1 | 1 | laboratory testing | 158 |
| 1 | 1 | keough farrell | 0 |
| 1 | 1 | keough comment | 1 |
| 1 | 1 | inland area | 99 |
| 1 | 1 | indian | 126 |
| 1 | 1 | impervious surface | 214 |
| 1 | 1 | iacp | 0 |
| 1 | 1 | how to monitor water temperature | 250 |
| 1 | 1 | how to monitor water temperature maryland | 112 |
| 1 | 1 | how to allocation LC | 8 |
| 1 | 1 | golf | 111 |
| 1 | 1 | gas storage | 148 |
| 1 | 1 | funding public sewer conversion | 81 |
| 1 | 1 | funding for conversion to public sewer system | 81 |
| 1 | 1 | funding for Philadelphia public sewer installation | 110 |
| 1 | 1 | factory farms transportation pollution | 4 |
| 1 | 1 | factory farms ocean pollution | 3 |
| 1 | 1 | draft WIPs | 121 |
| 1 | 1 | dissolved oxygen | 522 |
| 1 | 1 | dissolved oxygen severn | 6 |
| 1 | 1 | disclaimer | 136 |
| 1 | 1 | define return to compliance | 159 |
| 1 | 1 | dana walker | 1 |
| 1 | 1 | connecticut aquifer | 0 |
| 1 | 1 | commodities in the united states | 6 |
| 1 | 1 | cmc | 34 |
| 1 | 1 | chuck jingling | 0 |
| 1 | 1 | chuck fox | 5 |
| 1 | 1 | chesapeake problems | 327 |
| 1 | 1 | chesapeake challenges | 87 |
| 1 | 1 | chesapeake Bay rivers shefpe iles | 0 |
| 1 | 1 | chesapeake Bay rivers sheep files | 26 |
| 1 | 1 | cbr | 0 |
| 1 | 1 | bridgeport ct | 0 |
| 1 | 1 | bore holes | 9 |
| 1 | 1 | biosolids | 52 |