If the corrupt liberal bureaucratic politicians won't allow the use of Sodium Percarbonate ( multiple trade names such as OxyClean, Oxy-Septic, and numerous other products all beginning with OXY )
http://www.oxyseptic.com/how-it-works/

then you can get around these unjust laws in other ways.

The object is to get oxygen into your drain field any way that you can. Oxygen will break up the biomat and restore flow. There are companies that will pump oxygen directly into your drain field, that quickly breaks down the biomat. They attach an air pump to the D-Box and pump air directly into the septic field lines. I could do this myself by attaching a rental air compressor to the Septic Tank outlet pipe. I think 10 PSI pumped into the leach field might work A-OK.

If your drainfield is just slow at absorbing water, you can install an aerator into your septic tank. This converts the tank from Anaerobic to Aerobic and the oxygen rich water will slowly break down the septic field biomat.
http://www.septicairaid.com/index.html
As a bonus, it will be far more effective breaking down the solids in the tank. An aerator also eliminates most of the odors in the effluent. There are many aerators on the market. Google Septic Aerators for the list.

There are also companies that will come out and fracture the biomat in your drain field to get more oxygen into the biomat.

Do a google search of "Septic field oxygen" for more ways to get oxygen into your septic field. Anything is better than paying $30,000 for a new field that is not needed as MAKE WORK for the unions.

Here is another option you can use as a last resort. Let your septic field sit idle for 6 months to 1 year. Sitting idle allows oxygen to penetrate the biomat and break it down. Some people do this by adding a new 2nd leach field and they install a 2 way valve so they can switch their septic tank between fields each year. With this approach, you will at least get something worthwhile for your $30,000.

PS) get your septic tank pumped out before the sludge level reaches the exit pipe "T". Save big money by measuring the sludge level yourself, so you don't waste money pumping out the tank when not needed.
http://www.aero-stream.com/how-to-measure-septic-tank-sludge-depth/
This is easy to do if you install risers to your tank:
http://www.septicsolutions.com/SepticTankRisers/TuftiteSepticTankRisers.html

PS) Believe it or not, some of my neighbors have not pumped their tank out in 20 years ! ! I don't know why their septic tank is even working at all. They think that "Rid-X" or other toilet additives eliminates the need for pumping out the tank. (All the experts agree that pumping is still required) It will be a real mess when they finally get it pumped out!

IMO, the Septic Plumbers make it impossible for the homeowner to work on their own tank on purpose: Job Security.
It is so simple & easy to add risers to the tank during installation. I would not be surprised to hear that your Liberal state even has a law against that to provide more make-work for the unions. Remember New York unions blocking non-union volunteers from helping after Hurricane Sandy?

Grizz

JF,
It says here that T&J is maybe designed for aerobic operation. "Because of the porosity of the panels and natural sand, tiny aerobic bacteria are allowed to process the effluent very efficiently."
http://mcneelycompanies.com/info.php?itemNo=108
Should someone have already installed an aerator for you?

I've never heard of this system. Thanks for posting.

Grizz