Mr.Kotegawa's tweets wrote here.

[AnzuAme]

Hello everyone. I love BioHazard 1.5 Very much!
I had an interview with Mr.Kotegawa, Because of I wanted to help Team IGAS.
Mr. Kotegawa is Background designer. He had drawn the RE 1.5's Background design.
So I heard whether a some Background design was not left.

My question is:

突然のご訪問をお許しください。
僕は、バイオハザード2の熱烈なファンです。いくつか質問よろしいでしょうか？
古手川さんは、バイオハザード1.5の、背景イラストは、まだお持ちでしょうか？

translation into English:

Please permit a sudden visit.
I am an ardent fan of biohazard 2. Do you mind if I ask you a few questions?
Does Mr. Kotegawa still have the background illustration of biohazard 1.5?

His answer is:

背景イラストはカプコンの財産なので全部置いて行きました。

translation into English:

I put the all background design in capcom. Because it is capcom's Property.

He has not it.
I'm Sorry team IGAS....

I was not useful....

[News Bot]

This is the response you'll get from most former designers at CAPCOM really. Their work is the company's property and very few of them took out their material when they left the company. Concept artists had to scan their pages if they wanted any hope of getting the work out of there.

[Kegluneq]

Not quite, AnzuAme. You can still be helpful. There is no need for the actual background designs.

What would be interesting to know is how much of BH 1.5 was made by the final build. Do you think you could ask Mr. Kotegawa what locations were finished?

For example, if the Radio Room, Medical Room and Archive (or Media) Room from the RPD 2F were completed; if the Drains was finished and if it had the green portion seen in the TGS 1996 trailer (which was eventually re-modeled by the PSM build) or if that was removed. Anything that might help us figure out what was done by the final build.

Do you think you could tweet him, asking about these things? Perhaps he still remembers.

[OKeijiDragon]

AnzuAme, thank you for joining THIA and offering to be of some use. I see this as an opportunity to ask this background designer of his work for the prototype. Perhaps if you could contact him again to ask him of these questions I have for him, that would be very kind of you.

I'd like to know how long it took for them to develop the background files, from when it was conceptualized to when it was finally rendered and inserted to the game?
Also, it would be nice to know what areas were left to be finished before the project was restarted?
Finally, if he could provide a start date of when they began developing backgrounds, that would be interesting to know to.

If I come up with anything else, I'll post them here.

[Enigmatism415]

For example, if the Radio Room, Medical Room and Archive (or Media) Room from the RPD 2F were completed; if the Drains was finished and if it had the green portion seen in the TGS 1996 trailer (which was eventually re-modeled by the PSM build) or if that was removed.

I'd like to know how long it took for them to develop the background files, from when it was conceptualized to when it was finally rendered and inserted to the game?
Also, it would be nice to know what areas were left to be finished before the project was restarted?
Finally, if he could provide a start date of when they began developing backgrounds, that would be interesting to know to.

「概念化した時からゲームに入れた時までは、背景を作ることがどのぐらい掛かったでしょうか？ 」
「バイオ２の発展が再起動された時には、まだ完成しない室がいくつ残っていましたか？例えば、警察署の通信 室、医療室、資料室は完成されましたか？」
「古手川さんはいつ背景を作り始めたでしょうか？」