Pros: almost like the original one
Cons: none so far
Improvements: maybe more different textures but they are fine
Notes: GREAT"

U'r almost there, but you have a few problems.

Firstly, the map is a bit on the simple side, but still by having smokevolume entities in your map you can sacrifice framerate a bit.

I suggest you use env_fog_controller (if you dont already) and make the fog thicker. It'd help a little bit with the framerate, and make the map feel more like cod4's.

Secondly, you should use colorcorrection to help get the grey gritty feel down more. A slight usage of CC would push the map forward visually a little bit.

Layout seems pretty accurate (from what i remember) i'd have to give it a 7.5 though for the visual problems.

Pros: ...That...

That is absolutely incredible...

Fixed the download.

Pros: almost as good as the actual map!!
Cons: i think you missed the carpark on screenshot 2. other than that, <3
Notes: make Strike next! or Crash.