In the past I tried to come up with an EDC kit that was urban oriented. Even though I do not live or work in a truly urban environment, I was still considering it to be an Urban Survival Kit. My intention was for this to be a basic kit for daily urban carry that I could add additional items to for wilderness carry. I considered my needs and came to a conclusion that regardless of the environment our basic human needs do not change, nor do your priorities in a survival situation; they are medical, shelter, warmth, water, signaling and food. Basically my urban survival kit became just another wilderness survival kit. Which at least in part explains why a modified PSP makes such good sense. All you need is to add a few urban specific items (I am thinking of LARGE urban area specific items, like a credit card, phone card, copies of id in case you lose your originals, and a metro card – whatever that is) while removing anything that may violate local laws.
However as Doug points out in his own materials for the Pocket Survival Pak more items are needed than just the PSP. His own suggestions are to add a knife, items for shelter, pocket flashlight, a first aid kit, items for water purification and carry, and personal meds. Point I am making (and others have made on this thread) is that an urban pocket survival pak on its own may not address all your needs in a survival situation, even an urban one. You can however augment its capabilities by carrying additional items in the kit or on your person. I think everyone has made some pretty good suggestions on what to carry/add for an urban survival kit. Also, based on your earlier post:

"At home I have ...

In my car I have ...

In my purse I have ...

On my person I have ..."

it sounds to me like you already have most things covered. The only other items you might add to your kit and/or pockets (if you haven’t already):

1. Coins to go with the cash (assuming you can still "drop a dime" for a phone call" or come across a vending machine)
2. Credit card (like those visa gift cards)
3. Other useful cards like a metro card if that is applicable
4. ID (copy of your driver’s license or id card, copy of social security card maybe)
5. Shelter items
6. Emergency water items (since you don't always carry the .5L water bottle on your person)
7. Extra batteries – Can you ALWAYS count on being able to buy extras at a store?
8. Bandanna
9. Dust mask (maybe you could leave this out if you include the bandanna)
10. Knife (if it is legal to carry – you may want to make sure the scalpel in the PSP won’t cause you any legal trouble as well)
11. Extra keys to car and home

I think most everyone else has mentioned items along these lines so no revelations here (I cheated and looked back through the thread and picked out what looked like the best suggested items ). Doug has pointed out, no single kit can “contain all the equipment or supplies you might need or want in an emergency.” In the end you have to evaluate your own needs, couple that with our suggestions and your own experience, and let us know what you come up with. Hope this helps. Jeanette, your thread has generated some thought-provoking discussion and made at least a few of us think more outside the box.