The original idea for this puzzle had a different working title, however as I started creating the equations with Latex markup language, I realised that =Andy_R is valid syntax, so here is an addition to my collection of caches featuring cachers names.
The cache is not at the published co-ordinates, instead consider the following...
Given a geocache resource block assignment pair 
where each element is specified as a triplet of values (ref [1]), a means of representing the allocated resource blocks can be considered by calculating the combinatorial index
corresponding to the sorted geocache resource block indices
.
The resulting index is given by the equation
where
is the number of indices constituting a resource block assignment set, and
is the range of values for resource block indices.
is the extended binomial coefficient, resulting in a unique label,
The cache can be found at (163180054, 166147831)
Homework can be checked with the usual online system
References
[1] (2016) Wikipedia website [Online]. Available: https://en.wikipedia.org/wiki/Geographic_coordinate_conversion see section degrees decimal minutes
As an additional exercise, parking can be identified as (161708418, 166147778)
Certificates are available for the first eight finders. Happy hunting.