Attemp to avoid full field failure - Hey Grizz!!
Quick what's what:
Tank was pumped July 2013
Late Dec. - Temps dive below freezing. Sudden abnormally Cold weeks on end. Temps 4 degrees plus wind chills. D-inlaw and wife whip through 8 loads of laundry. Other daily household actions (7 persons) continue as usual.
Bang - Pipes lock up - from normal flow to No Flow. Minor snow on ground(not insulation depth) and ground frozen solid. Cannot dig for a few days. Stop using any Drain water(pleasant - not)
Okay after a few days, able to dig out front inspection cover. Level is at Entry pipe upper 1/3rd Snakeed a bit and what exited covered pipe exit level. Stopped and covered - show storm and temps dropping.
Home in Full water conservation mode. minimal grey water to plant beds. Black water to porta-potty for disposal.
Temps rise a bit. Open front service access. Water level has dropped below pipe. Worked to free up house blockages. Not much luck and still Freezing. More Snow storms/sub freezing temps. Lock down again.
Finally Temps above freezing. Open Septic, level 8: or more below intake.
Snake out house lines and all drains flowing. Tank is rising rapidly.
Read all possible over the Months in preparation.
A lot of Grizz info seems solid and can be confirmed through other sources.
End of March. 3 Weeks Off to solve issue. Yea, Snow again/Rains/Freeze and finally a few decent days.
Fully uncover septic.
Tank is down again - water going somewhere(slowly)
Lines to house still flowing. Minor water usage to keep pipes moistened.
Allowed a few showers and a few flushes. Tank rose to center of drain pipe - Stopped water usage.
Attempted to snake out to D-box. almost impossible - maybe 5ft. and pulled a piece of plastic bag out.
Dug and located D-box
Removed Lid - Not flooded - Not in great condition, but not flooded.
Inspected Septic outlet line and found almost closed. Finger hole at best.
Prepared for full field treatment.
Tank Pumped out
Baffles inspected - good
Filter acquired for Exit baffle
Exit Pipe opened back up(still in progress)
Jetted Laterals to clear blockages - 3 laterals in system.
Small Jetter - 1500PSI
Verified low amount of septic sludge - mostly Non Flushable blockages - ahmmm.
Jetting and checking, ran about 300 Gal into laterals.(Good?)
2 treatments of sodium percarbonate so far, directly into each leach line.
Second treatment - Mixed in HOT water,flood filled lines and Capped lines to Push expelled oxygen into field.
*Will repeat 2x more then treat with Lime Sulfur followed by Roebic K-570 to boost/jump start Aerobic development.
Will maintain water conservation in an attempt to allow field to start healing.
NOTE: A 30' Pool was installed over the field 27 years ago. Several experts say - No Problem.
Septic is almost 4 feet below ground level.
Hope this does some good. I'm tapped out.