Plenty of UV getting in.

They are as in-expensive as any competing importer and nobody matches their specs in the price range.The plywood is good hard plywood not the typical soft import plywood.Their products meet the California Air Resources Board Phase 2 requirements for formaldehyde emossions which is a huge issue with import plywood.Their finish is a UV cured, water based Benjamin Moore stain just like the American product.  

The factors come down to the type of work they will be doing to "replace" this line, are they relining it with cured-in-place pipe (CIPP) lining, epoxy pipe lining, or UV sewer lining; those are between $2k-$5k (in my area).

- atypical tools, such as a knife or flashlights?

A tank system should have some kind of multi stage filter and UV system to assure microbial and particulate control. 

Laser tape measure, or a real one to measure rooms.Bolt cutters or a small tool kit that goes in the car.Powerful flashlight for looking in dark homes.A few spin key boxes to put on vacant homes.Books on real estate, like The Millionaire Real Estate Agent book, The One Thing, or The Millionaire Real Estate Investor.Some kind of BP subscription or books.

When we go to a showing, I often have a flashlight, ladder and coveralls in the car so that I can hit the attic and crawlspace right there.

Setup alerts on Zillow and Redfin for keywords that may indicate a fixer upper (handyman, handy man, fixer, investor, invester, TLC, flashlight). 

to start: large level and small level power tools (drill, saws, nail gun, multi tool) screw drivershammersmeasuring tapesstud locatorchalk stringpry barvicesmagnet wire stripper flashlight tapes (duct, blue, masking)paint brushes, rollers, pans gloves putty knifestraight edge cutting tool steel woolpapertowels, shop towels  garbage bagsmagic eraser

The heat combined with the intense sun (UV damage) would deteriorate and degenerate the wood, rendering it not at the same level that it was originally [Wood products are rated/graded, you will see this stamped on wood when you buy it and it is called out by architects and engineers]So unfortunately no, I seriously doubt that the wood is going to be approved.