Use the map below to examine the different impact zones of the proposed pipeline project. Type any address into the search box to see it in relation to the pipeline. Zoom in and out with the mouse wheel. Click and drag the map to explore. Show/hide zones by clicking the corresponding buttons. The hazard zone is so large, it can make the construction zone seem not-so-big - to get a sense of scale, compare the construction zone to the size of a house or the width of a road.
Map last updated Wednesday December 17, 2014 1:07 am [Entire Central Penn Line South is now shown]
ATTENTION PROPERTY APPRAISERS: NOTE THE LAST UPDATE DATE ABOVE. THIS MAP DOES NOT REFLECT THE FINAL ROUTE AS PERMITTED BY FERC AND THUS IS NOT A VALID SOURCE FOR DETERMINING WHETHER A PROPERTY IS IN THE HAZARD ZONE.
The map above was constructed using the information filed by Williams on October 31, 2014. The full construction footprint is now shown (except for the proposed 42.6 acre pipe yard, whose precise location near the Bridge Valley development has not yet been disclosed), including access roads, contractor staging areas, and all "additional temporary workspaces". Note that in Lancaster County, the extensive use of additional temporary workspaces increases the baseline 100-foot wide construction zone by an additional 30%.
The boundary of the hazard zone is based on a formula that was developed by the Federal government, tested against actual natural gas pipeline explosions and fires, and that is part of the Federal regulations establishing minimum natural gas pipeline safety standards. The formula gives the distance from a pipeline rupture and fire within which buildings will ignite and people won't have time to run to safety before being severely burned. The hazard zone in this map shows the area of Lancaster County that would be newly at risk to destruction of life and property due to a gas pipeline failure - approximately 9,500 acres (15 sq miles) in total.