I dug 6 inches below the sidewalk grade, trucked out about 30 1-yard trucks of soil, packed in 4 inches of concrete base and 2 to 3 inches of gold-colored rocks.

Hi BP,I'm looking at a HUD property with BURIED OIL TANK and may also need MOLD Remediation in the garage and another room.My bigger concern is potential Oil tank leaks and soil remediation that can run thousands of $s.

Hey @David Sandy welcome to BiggerPockets!

I'm interested in meeting local investors but the closest reia I found was in Sandy... just putting it out there, but I would like to try and get other ogdenites together to network! 

@Roberta CarraroCall Maranto Agency and speak with Sandy.

The sewer bills vary by location and they even factor in the "ERU" which measures the roof and paved space on the property which creates water run off into the sewer system vs space where storm water would be absorbed into the soil.  

Howeverall plumbing is laid and the slap is poured over it thus it can be very expensive to repairThere are areas where the soil is said to be "massively expansive" and it expands or contracts with water. 

During Sandy there was quite a few cases in the state of NY that went much more in the tenants favor, been reading those giving me heartburn. 

I'm building castles out of the white stuff here(sand). I

Take in consideration that this settlement usually happens on the first 20-30 years from the date the house was built, depending on the type of soil... some exceptions applies (flooding or oversaturated soil, earthquakes, to name few).Cost will largely varies depending on what actually the issue is and how severe is.