Jeff, Redneck,
Granted I have very little knowledge about this topic, but I can see if you start with a 4" pipe anywhere on the site other than the greens and bunkers you are in for serious problems. Like Tom said, if you keep things simple which I take to mean, respect and allow the sites natural drainage patterns to continue, modify the site's contours with extreme care, and in my experience drainage is pretty cut and dry, easy. An architect shouldn't have to pay for an engineer out of his or her fee. The client should pay for the engineering. I have never heard of an architect assuming the fees for the engineer. Great comment about post construction budgeting for drainage, do not forget sod and erosion mats. Despite my naive and inexperienced comment about drainage being easy, the very best design and construction efforts will not fully comprehend all the drainage needs. Architects that take fees for engineers then do not hire them, architects that create fairways that do not drain leaving the fairway dead, architects that ride a site in a pick up rain or shine, sounds to me like you have never met a good architect, you should pick better friends.
More sedimentation enters our streams from farming activites than what most developments could produce into a stream. I have no way to prove this, but that is based upon my little experience and lack of knowledge. Modest erosion control methods should be implemented at the outset, then the developer should post a $300,000 to $500,000 bond to do any cleanup during the term of buildout. Either way the developer is out this money, but the big gain is the land. No more ripping out woods to build big saucer bowls, no more raping hillsides to build saucer bowls. No one wants to hurt the natural features of the land. But, the measures developed by agencies and engineers to address one issue has created far more damage to the environment. Someday it will change because the current system is bad.
Redneck, I spent a lot of years in the south, and the agency oversight up until 1995 when I left, was virtually nonexistent compared to the Northeast. Up here, you take your capitalistic project in America, and you esstentially go to the Soviet Union to get your approvals. It is an amazing process when you walk into a township meeting with high ideals, a genuine desire to do right by the land, and of course a very biased belief that golf is absolutely the best recreational asset any community could pray for, and you walk out 5 hours later feeling like a dirty, evil, capitalistic pig. But, I may be wrong and lack any knowledge about this stuff, I just dabble in this as a hobby.