Wooded Area Adjacent Unit B

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Updated picture of the sinkhole taken mid-April by an advocate for us. Looks like someone removed the plywood that was covering this that's evident in the previous pictures.
Posted by Lincoln Park on April 18, 2014 Full Size|

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Reply kim Mank
5:16 PM on October 8, 2014 
Sinkholes are sunken layers in the land caused by changes in material beneath the surface.
Most sinkholes occur where debris such as trash, stumps, tree branches and other building materials were buried during the construction process of buildings. Overtime debris decays, this causes empty space under ground.
We also induce sinkholes when parking lots, building and changes called hydrolic regime. This happens when water stands in one area or near a pipe, sinking can also be caused by broken sewer line. In these case water stands and is concentrated to one area.
Some warning signs are cracks in foundation of buildings. This is a tell tale warning sign.
Sinkholes are most common in what geologists call, ?karst terrain.?Regions where rock below the land surface can naturally be dissolved by groundwater circulating through them
Rock will begin to dissolve and spaces and caverns develop underground. Sinkholes are dramatic because the land usually stays intact for a period of time until the underground spaces just get too big. If there is not enough support for the land above the spaces, then a sudden collapse of the land surface can occur.
Reply West Lawn
1:25 AM on August 1, 2014 
If sinkhole is located close to the home, check for structural damage (settlement cracking) in basement and at interior wall seams/joints
Ensure that the sinkhole area is blocked off from children, pets, pedestrians to avoid potential for injury
In areas of high to medium density housing, determine if sinkhole is in an area where former cesspool or septic system was located, as a collapsed system can mimic the subsidence feature
Contact a local construction contractor to assess the situation. Typically, a sinkhole can be remedied by excavation and filling an exposed ?throat? with a bentonite (clayey) grout mixture or concrete mixture known as ?flowable fill? to provide a manmade plug.
Consider maintaining subsidence/sinkhole insurance
Call the Engineering Services Office (610-678-5393) to report the occurrence so the location can be recorded onto the Township sinkhole database.
Reply Lincoln Park
2:29 AM on May 2, 2014 
The DEP claims they were there and did not see the sinkhole even though many have gone there and seen it! Move the plywood look around move all the debris that people have dumped in the wooded area. Then, the DEP states that they are not responsible for sinkholes?

QUESTION- What about when it could be from a damaged sewer line? What about the aquifer's close proximity...within yard?

Shouldn't they be concerned about cross contamination?

What about the sinkhole being within feet of the building? The sinkhole has expanded?

Would you be satisfied with this? Would you feel safe?

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