Well, first thing I would like to the written message where BPELSG told you to not contact the them. Not because I don't believe you, but because I want to see exactly what the message says. Please post what that message says or if you're more comfortable email me a copy at
[email protected]
Next, I would certainly respond with additional information that clearly answers the deficiencies as soon as you can. The sooner you respond, the greater chance you have for being approved in time for any exams.
Next, I'm guessing that you are currently licensed in another jurisdiction and one where the P.E. is generic in nature so when you provided paperwork for that license, you didn't have to demonstrate that the experience was discipline specific. Either that, or you have submitted an NCEES Council Record. When you apply in California for a license as a Civil Engineer, all qualifying experience must meet the definition of civil engineering as defined in the California laws (PE Act Section 6731). And that is always what people think is civil engineering. Feel free to email me your name if you wish me to delve deeper into this.