"Plans are useless; planning is indispensable," according to Dwight D. Eisenhower, then Commander of the Allied Forces in Europe during WWII. Now, you may be in total agreement with the first part of that statement, but you are really not convinced of the truth of the second part.
So, rather than looking around for an existing plan and then designing your own plan along the same lines, it would be a better idea to use software that allows you to create your own template.
While these are easily available online, some of them are way better than the others. A lot depends on the approach that goes into writing the business plan.
Service Operation - If a service is offered, describe it. Will the work be done by company personnel or subcontracted? Who are the subcontractor(s)? If on-site or in cyberspace, what employee qualifications, equipment, and technologies are needed? How will quality be assured? What performance levels are anticipated per employee? Possible Data Sources: local Chamber of Commerce; yellow pages; trade associations.