http://i577.photobucket.com/albums/ss215/douggoss_2009/Yard Flood March 17 2012/IMG_6157.jpg

My question is how will this affect our lawn both short term and long term? This is not the first time we have had this mud/silt/dirt wash onto our property, it also happened while we were out of town in last September.
When we got back the mud was a few inches thick on the driveway. I am not sure if that was caused by rain or a very dry spell where the dust from the uncovered lot blew down onto our property.
I noticed dust clouds many other times. In September I had the Street Department from Clarksville here and they assured me the drainage was correct from the lot.

One other thing I will add is that I over seeded the entire lawn last fall (did it right - dethatched, aerated, slit seeded, rolled, watered, etc... Got the seed, fertilizer, etc from you) The grass came in
across the back yard except for the channel the water came across (shown in pictures). It also did not come in very well in part of the front yard (also part of the flood/mud damaged area).

The Street Department was here this week and met with the builder and my wife and I have a meeting with them on Monday morning at 7:00am. The Street Department has admitted to giving
the builder incorrect information on drainage and he has already taken steps to correct that (and has admitted he has caused these problems for us. He has also sent a crew to begin cleaning up the mud
in the driveway and sidewalk.

My biggest concern is what affect these multiple layers of mud/clay/silt, etc,,,, from the site that have washed onto our yard will have? It may be coincidence that I could not get grass to grow where we had
the issue in September but that seems odd to me it would come in elsewhere.

Ultimately I just want to be treated fairly by the builder. In your opinion, what should we expect from him in terms of "cleaning up" the yard (it has debris throughout). Would it be asking too much for him to replace
the sod that was harmed? I do not know what the long term affect will be from this but I do not imagine this would be good for the yard (covered with multiple layers of dirt/silt/mud/weeds.

Pictures 28-29 show the back of our lot overcame with weeds. I take care of this like the rest of the yard and until the end of last summer this was grass just
like the rest of the yard. If you look up close at it is is also covered with a layer of dirt. I cannot help but think this was blown, carried across the road when they started the construction at the end of the
summer last year. I also think having that line of trees may have saved the portion of our back yard behind them from looking the same.

Again, thanks for any advice you could give as we meet with the builder. Our house for sale and appearance means a lot. We've spent a lot on sod, irrigation systems, fertilizer. etc...
and I am just not sure what affect this has had and will have on the yard. Ultimately we just would like to know what to ask of the builder for reparations???

Again, thanks very much for any advice.

I have seen this with builders before. One neighborhood I lived in the builder was very proud that his basements did NOT leak. One of my neighbors had a leak in the basement of her new home. The builder was out there with a back hoe at 10 am that day digging down to the bottom of the basement to correct the problem. A week later her entire garden looked like nothing had happened.

I live in a county that is experiencing an oil boom. New pipelines are going in everywhere. When those pipeline guys leave, you'd never know they were there.

So yes, it is very customary for the person who caused the damage to completely restore the property to its prior condition. This would include any damage they do to the sprinklers in fixing the other damage. In your case it seems the city is owning up to this.

And here's how I would fix it. I would probably start by ripping out the entire sprinkler system (to save the aggravation of breaking it up piece by piece with a tractor later), regrading the land, redoing the landscaping, and replacing the sprinklers.