03-16-2009, 05:15 AM
Aloha - Youser!
Septic-101 in HPP.
Let the class begin.
1) The mauka side (inland) of 5th you can have a cesspool. The makai side (ocean) of 5th you MUST have a septic system (tank and leach field).
2) You MUST have an engineer design the septic system - called "Individual Wastewater System". Our engineer submitted all the paperwork to the County. Cost $500 - $600.
3) Location is important if you drill a well. I have had two different opinions: the well driller mentioned they can be across from each other (opposite sides of the lot) and the septic engineer strongly mentioned it be as far downstream from the well as possible.
4) The two most common sizes are 1,000 and 1,250 gallon tanks made here in Hawaii by Chem-tainer. 1,000 for 2 to 3 bedrooms and 1,250 for 4 to 5 bedrooms. It's the number of bedrooms NOT bathrooms that determines the size you will need. Your house can be 10,000 square feet and have 10 bathrooms with only 1 bedroom and you can technically have the smallest system installed.
5) The size of the leach-field is also based on the number of bedrooms - about 70 sq.ft. per bedroom. They will dig out the rock to the engineered depth (minimum about 3 feet) and replace it with suitable soil replacement (common is 3/8" minus cinder or 3/8" minus cinder soil). You will end up with a BIG pile of rock.
6) Just about anybody can dig the holes but most engineers will specify that ONLY a licensed contractor install the system. The contractor designations are C-9, C-37, "A" general engineering, C-37a, C-43.
7) When the engineer stamps the plans he is taking responsibility that it will be built according to those plans. " This work was prepared by me or under my supervision and construction of this project will be under my observation."
8) Setback requirements can vary but typically 5 feet from property line and 5 feet from structures.
9) Parts of the system must be left uncovered for inspection or re-exposed. They are: manholes/access openings, distribution boxes, ends of trenches to visually see gravel, pipe and geotextile fabrics used and/or seepage pit openings.
10) Costs:
Engineer: $500 to $600 - you normally pay this separate from the installation
Tanks:$2200 to $2500 - this is normally included in the installation est./cost.
http://www.chemtainerofhawaii.com/produc...spx?cid=31
Normal installation estimates are $5,000 to $7000. PLUS engineers cost.
Total - $5,500 to $7,600 or whatever you can NEGOTIATE!
Hope this helps - Aloha!
"Each thing I do I rush through so I can do something else" - Cemetery Nights/Stephen Dobyns
Septic-101 in HPP.
Let the class begin.
1) The mauka side (inland) of 5th you can have a cesspool. The makai side (ocean) of 5th you MUST have a septic system (tank and leach field).
2) You MUST have an engineer design the septic system - called "Individual Wastewater System". Our engineer submitted all the paperwork to the County. Cost $500 - $600.
3) Location is important if you drill a well. I have had two different opinions: the well driller mentioned they can be across from each other (opposite sides of the lot) and the septic engineer strongly mentioned it be as far downstream from the well as possible.
4) The two most common sizes are 1,000 and 1,250 gallon tanks made here in Hawaii by Chem-tainer. 1,000 for 2 to 3 bedrooms and 1,250 for 4 to 5 bedrooms. It's the number of bedrooms NOT bathrooms that determines the size you will need. Your house can be 10,000 square feet and have 10 bathrooms with only 1 bedroom and you can technically have the smallest system installed.
5) The size of the leach-field is also based on the number of bedrooms - about 70 sq.ft. per bedroom. They will dig out the rock to the engineered depth (minimum about 3 feet) and replace it with suitable soil replacement (common is 3/8" minus cinder or 3/8" minus cinder soil). You will end up with a BIG pile of rock.
6) Just about anybody can dig the holes but most engineers will specify that ONLY a licensed contractor install the system. The contractor designations are C-9, C-37, "A" general engineering, C-37a, C-43.
7) When the engineer stamps the plans he is taking responsibility that it will be built according to those plans. " This work was prepared by me or under my supervision and construction of this project will be under my observation."
8) Setback requirements can vary but typically 5 feet from property line and 5 feet from structures.
9) Parts of the system must be left uncovered for inspection or re-exposed. They are: manholes/access openings, distribution boxes, ends of trenches to visually see gravel, pipe and geotextile fabrics used and/or seepage pit openings.
10) Costs:
Engineer: $500 to $600 - you normally pay this separate from the installation
Tanks:$2200 to $2500 - this is normally included in the installation est./cost.
http://www.chemtainerofhawaii.com/produc...spx?cid=31
Normal installation estimates are $5,000 to $7000. PLUS engineers cost.
Total - $5,500 to $7,600 or whatever you can NEGOTIATE!
Hope this helps - Aloha!
"Each thing I do I rush through so I can do something else" - Cemetery Nights/Stephen Dobyns