| 31. | Prior to 1909, Phelps conducted numerous experiments on chlorination of sewage and sewage disposal plant effluents.
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| 32. | It also included a pump for reconstructing the Mir's sewage disposal system, which failed a month ago.
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| 33. | The government said it would sell water distribution and sewage disposal and treatment concessions in individual municipalities.
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| 34. | TEES continued its highway research, while starting research on gasoline, rural electricity needs and urban sewage disposal.
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| 35. | The lack of piped water and sewage disposal system is critical in underserved areas of the neighborhood.
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| 36. | The High Priority Program, including Stage One of the Strategic Sewage Disposal Scheme, would not be affected.
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| 37. | Millions of pounds have been spent on the introduction of new water treatment and sewage disposal plants.
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| 38. | Minimum distances and soil percolation requirements between sewage disposal sites and water wells need to be observed.
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| 39. | An estimated 1 million people living along the border lack basic water delivery and sewage disposal systems.
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| 40. | The main disadvantage of bacterial digestion in sewage disposal is that it is a very slow process.
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