like the guide says
Demonhunter Breeches: Sol
Adds Three of These
Strength +6~12 - 8.43%
Dexterity +6~12 - 8.43%
Magic +6~12 - 8.43%
Vitality +6~12 - 8.43%
Critical Hit Rate +1~2% - 5.56%
HP: +80~150 - 8.43%
HP: +120~200 - 8.43%
MP +180~300 - 8.43%
Reduce Physical damage taken +1~2% - 8.43%
Reduce Magic damage taken +1~2% - 8.43%
Elemental Resistance +4~10% - 1.69%
HP Recovery +12~25 - 8.43%
Evasion +100~200 - 8.43%
dunno where you see -interval in that list
there are no -interval pants for any class on EPW
but I agree it would be nice to have some more accurate guides on this.. like what are the chances to get -chan on EA/SIN gear