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2030 Plan - Grand Strand Water and Sewer Authority

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2. Wastewater Capital Improvement <strong>Plan</strong><br />

The wastewater plan is based on providing facilities to meet the peak monthly average<br />

daily flow of 61 MGD, which is the projected <strong>2030</strong> wastewater dem<strong>and</strong> for Horry<br />

County. The City of North Myrtle Beach will be provided wholesale service from<br />

GSWSA’s Vereen plant to supplement the capacity from the two city owned facilities.<br />

GSWSA <strong>and</strong> North Myrtle Beach have a wholesale contract in place for GSWSA to<br />

provide capacity to meet the city’s future capacity requirements. Should GSWSA reach<br />

an agreement with the City of North Myrtle Beach to acquire the City’s two wastewater<br />

plants, it will not affect the wastewater CIP since the plants are not projected to be<br />

exp<strong>and</strong>ed regardless of ownership.<br />

The plan is based on GSWSA continuing to provide wholesale <strong>and</strong> retail wastewater<br />

services. Projected wholesale wastewater customers are:<br />

• City of Myrtle Beach<br />

• City of North Myrtle Beach<br />

• City of Conway<br />

• Little River <strong>Water</strong> <strong>and</strong> <strong>Sewer</strong>age Company<br />

• Georgetown County <strong>Water</strong> <strong>and</strong> <strong>Sewer</strong> District<br />

• Tabor City<br />

Since GSWSA will be providing wholesale service in these areas, capital improvements<br />

internal to these utilities are not considered in the wastewater plan. If any utilities decide<br />

to merge with GSWSA, the plan will be revised accordingly. City of Marion wastewater<br />

system merged with GSWSA in May 2010. The facilities have excess capacity expected<br />

to be adequate to accommodate growth to <strong>2030</strong>. The system has significant inflow which<br />

will be reduced through renewal <strong>and</strong> replacement projects.<br />

a. Wastewater <strong>Plan</strong>ts<br />

Future wastewater plant improvements will involve consolidation or elimination of some<br />

facilities, construction of a new treatment plant, <strong>and</strong> upgrades <strong>and</strong> expansions of all other<br />

plants.<br />

(1) Bucksport/Tip Top Regional WWTP<br />

Bucksport/Tip Top Regional WWTP will be a new advanced secondary treatment<br />

process plant with nitrogen removal <strong>and</strong> filtration to assure the high levels of treatment<br />

needed for l<strong>and</strong> application. The <strong>2030</strong> capacity is expected to be 5 MGD. Flows to this<br />

facility will come from a combination of diversions from Carolina Forest, the south<br />

str<strong>and</strong>, <strong>and</strong> the areas of Conway <strong>and</strong> western Horry County. <strong>Plan</strong>ts now serving these<br />

areas will not be exp<strong>and</strong>able to h<strong>and</strong>le all the increasing flows because of their restricted<br />

discharge limits. The l<strong>and</strong> application system at Tip Top provides an excellent disposal<br />

site which does not discharge into or increase any loadings to the rivers. A new<br />

transmission force main will be constructed to send flows from Carolina Forest, Conway<br />

<strong>and</strong> western Horry County to the Bucksport WWTP.<br />

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