IMPACT on WATER QUALITY

IMPACT ON WATER QUALITY

Photo Ed Wade Jr. c

FERC: Appalachian Gateway Project 135 FERC 61,239

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June 16, 2011 - Dominion Transmission, Inc - Docket No. CP10-448-000

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Edited by Lauren Ragland

77. 
One comment claims the EA is insufficient and imprecise in general, and in particular faults the EA for failing to give adequate consideration to the impact of drilling operations on water supplies. 

Section 2.2 of the EA provides a detailed assessment of the potential impacts of the proposed project on water resources, fisheries, and wetlands. 

The EA identifies the potential for pipeline construction activities such as blasting, equipment fueling, and accidental spills of hazardous substances to impact water quality and nearby water supply wells. 

In response, we require Dominion to adhere to the mitigation measures described in its Blasting Plan, Spill Prevention Control and Countermeasure Plan, and Erosion and Sedimentation Control Plan. 

These measures specify that Dominion: 

(1) not conduct fueling within 200 feet of a private well and 400 feet of a public well; 

(2) offer pre- and post-construction well testing to the owner of any well within 150 feet of construction work areas; 

(3) provide an alternative water source or other compensation to landowners whose wells are temporarily affected by construction; and 

(4) repair or replace any wells that are permanently damaged. 

We believe these mandatory construction conditions ensure the proposed project will have no significant Adverse impacts on water supplies.