In Gamu Isabela one of the worker still relied on manual way to dig a septic tanks for the restaurant lodging. He has been assigned the job of digging the pit in which the septic tank will be built. The three chamber septic tank will measure 4 feet by 6 feet and will be almost 7 feet deep. The tank will have a concrete slab on the bottom, filled, steel reinforced hollow block walls and a concrete top with clean-out ports.
During typhoons, the considerable water from the roof downspouts, will be collected in a series of concrete catch basins and directed outside the lot.The soil, as is true with most rice fields is extremely heavy clay. The water table really varies with the season from being more or less at the surface of the land during the wet season to about fifteen feet down during the dry season. If one had to do a percolation test to check the absorptive capacity of this clay – well there must be none during the wet season. During the dry season the clay becomes cracked and very absorptive.
There are complications with waste water disposal in our “neighborhood”. Being flat, mostly undeveloped farmland there is no municipal or subdivision drainage system into which to discharge. As is typical, only “black water” (toilet waste) will go into the septic system. Rain water from the roof gutters, and water from washing, sinks and showers will not be treated but will just be discharged as is. As our neighborhood develops, probably a drainage system or ditch will be installed to carry wastewater to the nearest stream bed. Many local families live along the streams and have their dug wells in or near the streams. Outside of treatment in a septic tank, there is virtually no sewerage treatment in the Philippines.
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