2030 Plan - Grand Strand Water and Sewer Authority

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(2) Myrtle Beach WWTP Myrtle Beach WWTP has been expanded from 17 to 22.4 MGD with upgrades to advanced treatment levels. The 50-acre oxidation pond which is a major cause of odor at the facility will be removed from routine service. Part of the pond will be used for effluent storage which will reduce the peaks and allow the full 22 MGD to be transported through the existing 36 inch pipeline to the Schwartz WWTP. (3) Schwartz South Strand Regional WWTP Schwartz South Strand Regional WWTP will continue to be the largest facility in GSWSA’s system. It will be expanded from 19.4 MGD to 22.4 MGD. Treated effluent will combine with Myrtle Beach effluent and be discharged through the existing common outfall line into the Waccamaw River. Effluent quality will be upgraded to meet more stringent levels through the addition of treatment basins and clarifiers. (4) Vereen North Strand Regional WWTP Vereen North Strand Regional WWTP in Wampee is presently permitted at 7.0 MGD with 2030 flows expected to reach 12.0 MGD. The Vereen Plant now serves Little River, a portion of North Myrtle Beach, Wampee, and the Northern sections of Carolina Forest. The plant service area will be expanded to encompass the northeastern section of Horry County presently served by the Longs WWTP. (5) Conway WWTP The Conway WWTP is permitted at 4.0 MGD and due to the effluent limitations at the discharge into the slow moving, low flow Waccamaw, the plant cannot be expanded for additional capacity. Any additional flows to the plant will be diverted through a new pipeline to the new Bucksport/Tip Top WWTP. The existing Conway WWTP will be upgraded with clarifiers and filtration to improve reliability and increase treatment of the effluent. Flows above 4.0 MGD will be piped to the new Bucksport WWTP. (6) Loris WWTP The Loris WWTP will be expanded from 0.7 MGD to 1.2 MGD to accommodate growth in the City and the Green Sea-Floyds area. The expansion will involve additional filters that will help the plant meet the treatment needs of the expansion and the effluent discharge limits to Pleasant Meadow Swamp. Flows above 1.2 MGD will be piped to the Conway WWTP. 76
(7) Green Sea-Floyds WWTP The Green Sea-Floyds WWTP has been expanded to 15,250 GPD. This expansion included minor plant modifications and added filters. The land application site was expanded to accommodate the additional flows. As the flows increase in the area, a force main will be constructed to connect to the Loris WWTP, and the Green Sea WWTP will be decommissioned. (8) Bucksport WWTP The Bucksport WWTP will be converted to a storage facility when the new Bucksport/Tip Top Regional WWTP becomes operational and the flows will be diverted to the new Bucksport WWTP. (9) Longs WWTP The Longs WWTP flows have been diverted to the Vereen WWTP. The Longs plant will remain in service as equalization and pumping facility. b. Effluent Disposal In 1999, DHEC, the Waccamaw COG, and all the major wastewater dischargers in the Waccamaw region agreed to an allocation of waste loads for discharge of treated wastewater into the Waccamaw River and AIWW. The waste loads were developed through a long-term study and mathematical model of the receiving waters in the region. These waste loads were issued for the southern and northern portions of the Waccamaw and AIWW and are expressed as pounds of Ultimate Oxygen Demand (UOD) per day. The UOD is the amount of oxygen demanding substances that can be assimilated by the waters at critical low flow periods and still maintain the levels of oxygen established by regulations for maintaining healthy coastal rivers with naturally low levels of oxygen. The following table shows the waste loads determined by DHEC and agreed upon by the dischargers. 77
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I. EXECUTIVE SUMMARY Grand Strand W
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II. INTRODUCTION The purpose of the
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Water and Sewer Authority (HWSA) wa
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E. Health Hazard Elimination In 198
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G. Service to New Developments Sinc
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Beach City employees involved in wa
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The county’s industrial base is a
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• New Services Development • In
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1. Retail Customers GSWSA provides
Page 25 and 26: D. Financial Position The Comprehen
Page 27 and 28: average merit increase of 4% during
Page 29 and 30: $169,746. Disposals for 2008 were $
Page 31 and 32: during the next 20 years, both of w
Page 33 and 34: As Table 1 indicates, the water and
Page 35 and 36: located in Horry County, the compar
Page 37 and 38: (5) User Rate Affordability It is a
Page 41 and 42: a. Sources The main water intake is
Page 44: 2. Wastewater Wastewater facilities
Page 50 and 51: (2) Myrtle Beach The Myrtle Beach W
Page 52: Re-pumping - 55 re-pumping stations
Page 55 and 56: Innovative and Alternative method o
Page 57 and 58: Adapting to the changes in both the
Page 59 and 60: 8. Operational Resiliency: “Ensur
Page 61 and 62: Short Term Strategies/Goals • Imp
Page 63 and 64: • Evaluate a variety of training
Page 65 and 66: • Continue to improve workflow pr
Page 67 and 68: Core Strategies • Involve stakeho
Page 70 and 71: C. Capital Improvement Plan Providi
Page 72: demand. ASR capacity will be availa
Page 75: 2. Wastewater Capital Improvement P
Page 79 and 80: The Myrtle Beach WWTP generates abo
Page 82 and 83: h. Wastewater Capital Improvement F
Page 84: 2. Revenue and Rate Projections Rev
Page 87 and 88: of rate adjustments and customer im
Page 89 and 90: above were forecasted on historical
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2030 Plan - Grand Strand Water and Sewer Authority

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