They're not part of the standards for Dive Guide any more:
(2013 standards, page PRO 3)
5. Prerequisites:
A. Starting Age is 18, Refer to Regional appendix for
specific rules to your area.
B. Own a Total Diving System of professional type
and quality.
C. Logged no less than 40 open water dives totaling
25 hours or more.
D. Must have completed the advanced adventurer
program and be certified in Diver Stress and
Rescue or equivalent.
They were requirements until the most recent revisions. Here's the prerequisites for dive guide from the 2012 standards:
5. Prerequisites:
A. Be at least 18 years old.
B. Own a Total Diving System of professional type
and quality.
C. Logged no less than 40 open water dives totaling
25 hours or more.
D. Have completed the following individual
speciality courses: Stress and Rescue, Navigation,
Night/Limited Visibility, Deep Diving, Search &
Recovery, Equipment Techniques and Enriched
Air Nitrox Diver (EAN is not required if not
available in your region).
or:
Be a certified Advanced Open Water Diver (from
a recognized agency) and have a minimum of 5
dives logged in each of the required specialty
areas.