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History ● Lykins Gulch HOA – 9442 Lykins Pl● Septic smart (great resource!)
● Originally installed in 1971● Collection System, batch reactor (Biopure),polishing pond, a trench● Many instances of mistreatment● Five houses; OD – 12 bedrooms (4 houses);RD – 14 (5 houses)
Des
ign
Proc
ess ★ Define constraints
★ Can’t afford state system => reduce flow★ Needs of the client★ Elderly using portapotties★ Gather information★ Septicsmart★ Design★ Really 2 designs
ImplementingA Solution
● Constraints of an onsite system in Colorado○ 5 3-bedroom houses
■ Design flow = 2,250 gpd○ 4 3-bedroom house; 1 3-bedroom house
■ Design flow = 1,800 gpd■ Design flow = 450 gpd
● Not to exceed 2,000 gpd
Options forDesign
● Really only one option for the system❑ Over-excavated❑ Sand Filter❑ Preference to chambers❑ Pressure dosed
DesignComparison
● Using an LTAR from claystone○ 18,000 SF
● Using an LTAR from Sand○ 1,800 SF○ Still large but manageable
ExistingRecords
● Plats from out of businesssurveying company● Aerials
○ County and Google● Contours from the county● Pictures of construction● Maps drawn by residents
This Design ● Visit the site❑ Consider the spread of the OWTS
■ Take grade shots get elevations❑ Staking the field reveals drainage
● Request an easement for theindividual property
Future ● Little reserve area considering the clay● Great installer done right the first time● Cross manifold feeds❑ Greater resting time between doses
Inst
alla
tion ★ Installer – 2D Enterprises
★ Communicating with client, installer,county★ Unforeseen problems★ Inspection
Execution ● ADV located in wrong place in site plan○ Error in elevation calculations
● Float separation○ Physically unable to get correctseparation
Results andReflection
● Clients very happy● Final Observation December 1st
■ No portapotties in the winter!■ Community OWTS specific problems
■ Communicating efficiently■ Paying for the system■ Responsibility for the systemmaintenance❑ Potters
● Look for the soil● Use all resources● Design for longevity