Maps

July 2018 Update:

Dominion Energy’s Written Request to the SCC dated July 2, 2018, to Participate in the Pilot Program, included Attachment B Maps (access link below).  These new maps include 5 variations as described by Dominion Energy below.

Maps with Variations from Written Request – Attachment B 070218

All questions regarding Dominion’s maps and/or variations should be taken to their Project Manager, Greg Mathe at:

Greg Mathe
Electric Transmission Communications
Dominion Energy
Office ph: (804) 771-3850
Mobile ph: (804) 229-7650
 
701 East Cary Street, 11th Floor
Richmond, VA 23219

Access Dominion’s Haymarket project information and updates at:  https://www.dominionenergy.com/haymarket

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Variation Corridors A – E descriptions:

Specifically, the Company is proposing Variations Corridors A through E to address the following issues that have arisen or could arise during the final engineering process:

  • Variation Corridor A (page 3 of Attachment B): Variation Corridor A measures 0.18 mile in length and extends between mileposts 2.05 and milepost 2.23 of the I-66 Hybrid Route. The portion of the transmission line within Variation Corridor A will cross I-66 overhead and then enter the proposed transition station.  This proposed variation is needed to ensure that the Company can meet the minimum VDOT wire crossing clearance over I-66 once the location of the transition station is finalized.  Specifically, this variation is needed to allow the Company to minimize the height of the poles on both sides of I-66 while maintaining the VDOT-required clearance; crossing I-66 at a perpendicular instead of a diagonal would decrease the span length and help to minimize the overall structure heights.
  • Variation Corridor B (pages 4 and 5 of Attachment B): Variation Corridor B measures 0.57 mile in length and extends between mileposts 2.78 and milepost 3.35 of the I-66 Hybrid Route.  The portion of the route within Variation B will be installed underground through a combination of HDD and open trenching. This proposed variation will allow flexibility in the design process to take advantage of HDD technology in combination with long cross-linked polyethylene (“XLPE”) cable lengths recommended by the underground contractors.  Altering the alignment under I-66 and increasing the length of the HDD in Variation Corridor B, potentially eliminates (i) the need for some tree clearing and open trench construction; (ii) two splicing vaults (one in each circuit) on the north side of the I-66 section of the proposed route; and, (iii) the launching and receiving excavation pits that are required to jack and bore under Catharpin Road.
  • Variation Corridor C (pages 5 and 6 of Attachment B): Variation Corridor C measures 0.13 mile in length and extends between mileposts 3.80 and milepost 3.92 of the I-66 Hybrid Route.  The portion of the route within Variation C will be installed underground through open trenching. Variation Corridor C encompasses an extremely narrow area with known underground utilities as well as overhead utility structures, guys, and anchors.  In addition, VDOT has inflow/outflow drainage culverts and infrastructure in this area that will need to be avoided.  Flexibility in Variation Corridor C will permit adjustments to the underground lines to avoid the utilities and drainage pipes in this area and to facilitate construction of the duct banks.
  • Variation Corridor D (pages 6 and 7 of Attachment B): Variation Corridor D measures 0.58 mile in length and extends between mileposts 4.08 and milepost 4.66 of the I-66 Hybrid Route.  The portion of the route within D will be installed underground through a combination of HDD and open trenching. Similar to Variation Corridor B, Variation Corridor D will allow flexibility in the design to take advantage of HDD technology in combination with longer XLPE cable lengths.  Adjusting the alignment under I-66 and increasing the length of the HDD across this area could eliminate impacts to the proposed development in the southeast corner of I-66 and US-15.  In addition, relocating the underground lines within Variation Corridor D could shift the lines out of a wetland area, eliminate two splicing vaults (one on each circuit), eliminate open trench construction along the I-66 ramp, minimize the removal of the buffer of trees along the interstate, and eliminate the need for a separate VDOT permit for crossing Route 15 and the associated launching and receiving excavation pits.  Finally, allowing for a shifts in the alignment of the route along Variation Corridor D could also eliminate the risk of potential damage to a developer’s soon-to-be-constructed parking lot and drainage culverts.
  • Variation Corridor E (pages 6 and 7 of Attachment B): Variation Corridor E measures 0.25 mile in length and extends between mileposts 4.66 and milepost 4.91 of the I-66 Hybrid Route.  The portion of the route within Variation E will be installed underground through open trenching.  The shift of the alignment within Variation Corridor E will allow the Company to avoid having to construct the transmission line within a deep ravine and side slope between the VDOT right-of-way and the Walmart store.  This will allow for the possibility of constructing one or both circuits out of this deep area and within  the asphalt drive behind the Walmart store.  This adjustment could ease construction and reduce the potential conflicts with VDOT drainage culverts and slope stabilization in this area.

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The 5.3 mile-long I-66 Hybrid partially-buried route for the Haymarket project, as committed to by Dominion Energy in the March 22, 2018 Stipulation Agreement, is outlined in the below maps.

The configuration of Dominion’s proposed I-66 Hybrid route (teal line in below maps) has been unchanged since 2015, with the exception of two variations (proposed in July 2016) for the last segment of the underground portion of the route.

These two variations occur near the intersection of I-66 and Rte 15, and also around the Walmart into the new proposed substation.  These underground variations for the western end of the Hybrid route are marked in red and yellow dotted lines in maps 6 and 7.

The 2.2 mile-long overhead section of the I-66 Hybrid route is outlined in maps 1 – 3 (teal line).  The overhead portion of the Hybrid route starts at the existing Gainesville substation, crosses to the north side of I-66 in the vicinity of the Prince William Parkway intersection, proceeds westward along the north side of I-66, and then crosses back overhead to the south side of I-66 in the vicinity of the Rte. 29 interchange, where the underground portion of the Hybrid route starts.

At mile 2.2 as seen in map 3, the I-66 Hybrid route (teal line) goes underground. The remaining 3.1 miles of the I-66 Hybrid route, as outlined in maps 3 – 7, is underground, until the route terminates and comes up from underground within the new Haymarket substation.

Any further clarification for particulars of the I-66 Hybrid route must be requested from, and provided by, Dominion Energy.

Hybrid (partial underground) I-66 Route:

Schedule 2 Hybrid – Map 1 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 2 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 3 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 4 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 5 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 6 of 7 – Dominion Remand

Schedule 2 Hybrid – Map 7 of 7 – Dominion Remand

 

The January 5, 2018 Remand Testimony from Dominion included newly proposed maps for the Overhead I-66 route as well as the above  the Hybrid (partially underground) I-66 route.

I-66 Overhead route:

Schedule 1 Overhead – Map 1 of 7 – Dominion Remand

Schedule 1 Overhead – Map 2 of 7 – Dominion Remand

Schedule 1 Overhead – Map 3 of 7 – Dominion Remand

Schedule 1 Overhead – Map 4 of 7 – Dominion Remand

Schedule 1 Overhead – Map 5 of 7 – Dominion Remand

Schedule 1 Overhead – Map 6 of 7 – Dominion Remand

Schedule 1 Overhead – Map 7 of 7 – Dominion Remand

Many people assume – with good intentions, but incorrectly – that the battle is now a narrow fight over a specific I-66 route. Some think that this is not their fight. All residents of western Prince William County are at risk, those on Dominion Virginia Power’s active route list (Carver Road, Madison, Railroad, I-66 Overhead, I-66 Hybrid), as well as those on previously considered routes (New Road, Northern, Western). In the current application, Dominion has provided the State Corporation Commission(SCC) with information for all 8 route alternatives. While Dominion has proposed the I-66 Overhead route in the application, the SCC’s final route choice can be any of the 8 alternatives presented, or a totally different route.

In this map the Coalition reflects all route alternatives from the Haymarket transmission and substation project.  The RED line is Dominion’s proposed I-66 Overhead route alternative to the SCC, and all other alternatives from the application are reflected in BLACK.

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Dominion Virginia Power Maps

Current Maps

Alternatives

Older Map Versions

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