Lottery to choose which goat will go: Yuma 39a
Whether the lottery is necessary, or perhaps simply identifying the animals for respective roles will suffice: Kiddushin 14a
The Prayer Admitting Sin: Yuma 66a
Forgiveness of the Kohanim with the Scapegoat: Yuma 66a
The Bringing of the goat into the Wilderness: Yuma 66a, 67a
The Bringer of the Scapegoat: Yuma 66b
Place of Destruction of the Scapegoat: Yuma 67b
Tying the tongue of scarlet on the goat: Shabbat 86a, Yuma 67a R' Yochanan ben Zakkai's edicts regarding the placement of the tongue of scarlet: Rosh HaShanah 31b; Yuma 67a
The Signal that the goat had reached the designated area: Yuma 68b
What happened to the tongue of scarlet during the final 40 years of the Temple: Rosh HaShanah 31b
Physical Characteristics
Requisite Similarity of the Scapegoat to the Goat used as an offering: Yuma 62a, 62b
What happens if someone dedicates a blemished animal for this offering: Yuma 63b; Temurah 6b
If the scapegoat becomes blemished, and is exchanged for a blemished animal: Temurah 6b-7a
Bringing of the Goat before the Temple Era: Yuma 67b
Cases requiring a Replacement Goat: Yuma 63b
In cases requiring sanctification of a second set of goats, we use the usable animals from the first set, first: Yuma 62a, 64a
If the other Goat dies: Yuma 62a, 63b, 65a; Temurah 22a, 23a
If the Goat was under-age: Yuma 63b
If the Goat dies before its Mitzvah is performed: Yuma 62a, 63b, 65a; Temurah 6b
If the blood of the non-Scapegoat was spilled before being brought to the altar: Yuma 64b
If the blood of the non-Scapegoat was lost before being brought to the altar: Temurah 22b
Slaughtering the goat outside the Temple: Yuma 62b; Temurah 6b
If one of the two goats was slaughtered before the lottery choosing which would be an offering and which would be the Scapegoat: Yuma 62b
Above case, where the goat was slaughtered outside the Temple: Yuma 62b
Use of the lottery-designated goat in the following year: Yuma 65b
Annulling the goat in a mixture: Temurah 28a