Offset S 00° 00.109 W 000° 00.148 .
Take pen. It is not in or near Burpham Lane. Numbers 1, 2 and 3 are not readily available, when you know the others, there is a way to know this as well.
Good hunting. You may also be interested in my other caches.
"First To Find", jointly, were clarkester and Kermit&Co.
Email me (via profile) with where you have got to if you are stuck and want (yet) another hint.
chmmyr/puzzle: flabalzf naq npebalzf. /6. Rznvy pnpur bjare vs shegure uryc jnagrq. pnpur/cache: Fvmr? Ernq cntr pnershyyl.