I’m really not sure about some of the responses in this thread- Scott says pretty specifically that base phase training is not to do with any sport specific train, it’s building a base or ‘putting money in the bank’. The specific phase is where you cash that in with workouts designed to simulate your training. To that end I would say you, and many guides, have a good job which provides many ‘free’ hours of work potentially over years. However there are training factors your work probably lacks- it’s probably not progressive or overloading, but you can create these with your additional training. With that in mind I would imagine more low intensity to increase total volume above what you are normally conditioned for would be the way forward rather than higher intensity workouts in the base phase. In the specific phase you might have to get creative to negate the fatiguing aspect of work to avoid it interfering with higher intensity workouts.
(All the above is just my reasoning from reading the book etc, not an expert!)