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Home My WebLink AboutWQ0036701_Pond Closure Plan_20190208 High Vista Pond High Vista Golf Club, 22 Vista Falls Road Mills River, North Carolina Headwater Project # A19-104-01 Prepared for: Vesta Property Services, Inc. 245 Riverside Avenue, Suite 250 Jacksonville, Florida 32202 February 8, 2019 Pond Conversion Plan Pond Conversion Plan High Vista Pond High Vista Golf Club, 22 Vista Falls Road Mills River, North Carolina Headwater Project # A19-104-01 February 8, 2019 Prepared for Vesta Property Services, Inc. 245 Riverside Avenue, Suite 250 Jacksonville, Florida 32202 Prepared by Headwater Environmental, Inc. 45 South French Broad Avenue, #170 Asheville, North Carolina 28801 __________________________ Adam M. Tripp, PG High Vista Pond—Pond Conversion Plan Headwater Environmental i TABLE OF CONTENTS 1 Introduction ............................................................................................................... 1 1.1 Background .................................................................................................................. 1 2 Proposed Conversion Activities ............................................................................................. 2 2.1 Locate and Abandon Wastewater Piping ..................................................................... 2 2.2 Sediment Presence Evaluation .................................................................................... 2 2.3 Surface Water Sample Collection ................................................................................. 2 2.4 Soil/Sediment Sample Collection ................................................................................. 3 2.5 Reporting ...................................................................................................................... 3 3 References ............................................................................................................................. 4 FIGURES Figure 1 Location Map Figure 2 Site Map High Vista Pond—Pond Conversion Plan Headwater Environmental 1 1 Introduction Headwater Environmental, Inc. (Headwater), on behalf of Vesta Property Services, Inc. (Vesta), prepared this Pond Conversion Plan for the conversion of a reclaimed water spray irrigation holding pond located on the High Vista Golf Course (the Site) into a non-wastewater pond. The Site pond location is shown on the attached Figure 1 and Figure 2. This Conversion Plan was prepared in accordance with the North Carolina Department of Environment and Natural Resources Guidelines for the Closure of Treatment Ponds and Lagoons, dated June 22, 2012, and contains a background and proposed conversion activities. 1.1 Background The sanitary wastewater generated by High Vista Falls and the High Vista Golf Club (High Vista Community) is collected and conveyed to a wastewater treatment system located on Creasman Hill Road east of Highway 191 and the High Vista Community. The 45,000 gallon per day wastewater treatment system is owned and operated by A&D Water Service, Inc. (A&D) and A&D has a National Pollutant Discharge Elimination System (NPDES) permit (number NC0089095) to discharge treated effluent to Line Creek. In addition to the NPDES permit, the High Vista Community has a non-discharge permit (number WQ0036701) from the North Carolina Department of Environmental Quality (DEQ) Division of Water Resources (DWR) to use the treated effluent (reclaimed water) to fill the Site pond, an approximately 2 million-gallon, 0.75 acre holding pond, which was historically used to irrigate the golf course. Note that the Site pond is also fed by a stream and therefore has only rarely received reclaimed water to supplement the existing water in the pond. The permit is owned by High Vista Finance, LLC (High Vista Finance). In March 2018, on behalf of High Vista Finance, Vesta Property Services, Inc. (Vesta), which manages the High Vista Community, requested the DEQ rescind the permit. In order to complete permit recession, conversion of the Site pond into a non-wastewater pond must be completed. High Vista Pond—Pond Conversion Plan Headwater Environmental 2 2 Proposed Conversion Activities Proposed conversion activities include:  Location of Wastewater Piping  Assessment for the presence of sediment in the pond  Collection of water samples for analysis  Collection of sediment/soil samples for laboratory analysis  Decommissioning of all inflow and outflow wastewater piping 2.1 Locate and Abandon Wastewater Piping Headwater will subcontract with a private utility locator to identify the location of the buried inflow wastewater piping to the pond. This investigation will be performed using ground-penetrating radar (GPR) or similar geophysical techniques. After the location of the buried inflow wastewater piping is identified, Headwater will coordinate with to have the piping decommissioned. To decommission the pipe, it must either be removed or plugged with cement grout such that the piping cannot be used as a conduit for wastewater to enter the pond in the future. The presumed location of the inflow piping was determined based on review of historical design drawings for the Spray Irrigation System and is shown on Figure 2. The presumed location of the piping may be difficult to access. As such, the inflow piping will likely be plugged with cement and abandoned in place. 2.2 Sediment Presence Evaluation It is unlikely that soft sediment is present in the pond since it has historically been filled with reclaimed water (water treated with tertiary wastewater treatment techniques). However, Headwater will gauge the bottom of the pond to confirm or deny the presence of sediment. Headwater will measure for the presence of soft sediment from the pipe entrance into the pond every 20 feet in-line with the direction of discharge (estimate five locations). If soft sediments are determined to be present, additional measurements will be collected along transects perpendicular to the direction of discharge from the pipe entrance into the pond. Measurement locations will be recorded using a handheld GPS device or based on Site features. This work will be performed by two Headwater personnel in an aluminum Jon boat, using a piston core sampler or similar technique. 2.3 Surface Water Sample Collection One surface water sample will also be collected from the center of the pond. The sample will be collected from mid depth within the pond using a bailer. Field parameters of pH, specific conductivity, dissolved oxygen, oxidation-reduction potential (ORP), turbidity, and temperature will be measured and recorded using a water quality meter and turbidity meter. High Vista Pond—Pond Conversion Plan Headwater Environmental 3 The water sample will be transferred to laboratory supplied sample containers and placed in a cooler on ice. The sample will be delivered to the laboratory and analyzed for fecal coliform bacteria, arsenic, cadmium, chromium, copper, lead, mercury, molybdenum, nickel, selenium, zinc, total Kjeldahl nitrogen, nitrate/nitrite, ammonia nitrogen, phosphorous, residual chlorine, biochemical oxygen demand, and total suspended solids. 2.4 Soil/Sediment Sample Collection Sediment samples will only be collected if soft sediment is determined to be present. If present, soft sediment samples will be collected from six locations (three in the northeastern half of the pond and three in the southwestern half of the pond) using a bottom dredge sampler. The samples collected from the northeastern and southwestern halves will be composited into two samples for laboratory analysis. A duplicate sample will also be submitted to the laboratory from one of the composite samples. Soil samples will be collected and composited from six locations (three in the northeastern half of the pond and three in the southwestern half of the pond). The soil samples collected from the northeastern and southwestern halves will be composited into two samples for laboratory analysis. The samples will be collected using a piston core sampler or a slide hammer driven soil recovery probe, or if no sediment is present, a bottom dredge sampler. The soil and; if present, sediment samples, will be transferred to laboratory supplied sample containers and placed in a cooler on ice. The sample cooler will be delivered to a North Carolina- certified laboratory under chain-of-custody protocol. The samples will be analyzed for fecal coliform bacteria, arsenic, cadmium, chromium, copper, lead, mercury, molybdenum, nickel, selenium, zinc, total Kjeldahl nitrogen, nitrate/nitrite, ammonia nitrogen, phosphorous, sodium, calcium, magnesium, percent total solids, and pH. 2.5 Reporting Headwater will prepare and submit a summary report to the DWR. The report will include a Site map showing sample locations, field observations, sample analytical results, and additional conversion procedures, if any. The report will also document abandonment of inflow piping to the pond and will document deviations to this Conversion Plan, if any. High Vista Pond—Pond Conversion Plan Headwater Environmental 4 3 References DEQ (North Carolina Department of Environmental Quality), 2012. North Carolina Department of Environment and Natural Resources Guidelines for the Closure of Treatment Ponds and Lagoons. June 22, 2012. FIGURES SOURCE FIGURE 1LOCATION MAP Date:2/8/2019 Prepared by:NJC USGS7.5-Minute Topographic QuadranglesSkyland, North Carolina (1991)Contour Interval = 20 feet 0 2,000 4,0001,000 Feet High Vista Pond Site22 Vista Falls RoadMills River, North CarolinaHeadwater Project # A19-104-011 inch = 2,000 feet Legend Pond boundary Site location Vista F a l l s R d Bishop Rd Brevard Rda Bowling Green DrOld Haywood RdSOURCE FIGURE 2SITE LAYOUT MAP Date:2/8/2019 Prepared by:NJC ESRIWorld Basemap Imagery2017 0 100 20050Feet High Vista Pond Site22 Vista Falls RoadMills River, North CarolinaHeadwater Project # A19-104-01 1 inch = 100 feet Legend Presumed location of inflow piping.