| ● The O2 concentration at well is higher than to the manifold ● The CH4 concentration at well is lower than to the manifold ● The suction pressure at manifold is lower than to the well | The horizontal LFG network either is blocked by condensate or is partly damaged | ● STEP 1: Blowing air to the network after wellhead opened ● STEP 2: Repeat the suction pressure measurement after few minutes. If the problem continues to exist then we proceed to the horizontal LFG network problematic branch repair |
| ● The O2 concentration at well is higher than to the manifold ● The CH4 concentration at well is lower than to the manifold ● The suction pressure at manifold is equal with this at the well | The problem is on horizontal LFG network | Repair the problematic branch of the horizontal LFG network |
| ● The O2 concentration at manifold is equal with this at the well ● The CH4 concentration at manifold is equal with this at the well ● The suction pressure at manifold is different to this at the well | The problem is on horizontal LFG network | ● STEP 1: Blowing air to the network after wellhead opened ● STEP 2: Repeat the suction pressure measurement after few minutes. If the problem continues to exist then we proceed to the horizontal LFG network problematic branch repair |