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HomeMy WebLinkAboutNOI Supplemental - SubmittalNOI Supplemental – Response to Agent Comment 635 West Yarmouth Road Yarmouth, MA Page | 1 September 11, 2025 Yarmouth Conservation Commission Yarmouth Town Hall 1146 Route 28 South Yarmouth, MA 02664 Re: NOI Supplemental – Response to Agent Comment 635 West Yarmouth Road – Bayberry Hills Golf Course (Parcel ID: 86-10) Yarmouth, MA 02664 Dear Yarmouth Conservation Commission, Goddard Consulting, LLC, (Goddard) is pleased to submit this Notice of Intent (NOI) Supplement – Response to Agent Comment on behalf of the Applicant, Bayberry Hills Golf Course, filed for the property addressed as 635 West Yarmouth Road in Yarmouth, MA. Response to Agent Comments Agent Comment Goddard Consulting/ SŌLitude Lake Management Response 1. Provide the treatment protocol for both phragmites management and in-water work, including time of year, type of herbicide application and mechanical strategy, and differences by year. The project proposes to manage invasive phragmites in both on the bank of the ponds and within the water, as well as nuisance aquatic vegetation and algae. Phragmites Treatment For treatment of the phragmites on the banks of the ponds, glyphosate will be used. The herbicide will be applied using a low-pressure backpack sprayer. The low-pressure sprayer will minimize any overspray of herbicide by delivering a controlled, steady stream. This stream will reduce overspray and waste. This allows for precision that increases the effectiveness of the treatment and limits exposure to surrounding non- target vegetation and sensitive areas. Following the herbicide application, the dead stalks will be handcut. This method will significantly reduce growth after the first year of treatment. Regrowth and additional application may be needed but will follow the same protocol. Herbicide application to treat Phragmites will take place in August-September. Herbicide will be sprayed by a licensed herbicide applicator in accordance with the product label. For treatment of the phragmites within the pond, a small boat with a tank of herbicide or a low-pressure backpack sprayer will be used. As stated above, using the low-pressure backpack will allow for precise NOI Supplemental – Response to Agent Comment 635 West Yarmouth Road Yarmouth, MA Page | 2 application to the target species. Glyphosate was specifically chosen as the herbicide to use in this scenario and is considered safe to use in aquatic environments. When applied in accordance with the product label., Glyphosate was designed to breakdown in water, preventing herbicide accumulation in aquatic plants, animals or the sediments of the ponds. This method will significantly reduce growth after the first year of treatment. Regrowth and additional application may be needed but will follow the same protocol. As stated above Phragmites in the pond will be treated in August – September. Aquatic Nuisance Vegetation Treatment Submerged vegetated, including curly-leaf pond weed will be treated using the herbicide diquat and/or flumioxazin. The amount and type of herbicide will be determined based on the extent of the aquatic plant growth, acreage, and depth of the pond. Herbicide will be diluted with pond water in a backpack or small tank onboard a Jon Boat and will be applied using the backpack or small 1" pump subsurface. Management/treatment will be as needed in April – September based on monthly monitoring reports. Aquatic Algae Treatment Algae, which includes filamentous algae, will be treated using copper-based algaecides. The product amount would be determined based on the acreage and average depth of the pond area being treated. Product will be diluted with pond water in a backpack or small tank onboard a Jon Boat and would be applied using the backpack or small 1" pump as a surface spray (if floating mats are present) or subsurface to control the algae. Management/treatment will be as needed in April – September based on monthly monitoring reports. 2. Provide a general list of nuisance and target species, to be refined with monthly reports Below is a list of known nuisance and target species. Additional species may be present and will be noted within the monitoring reports submitted to the Conservation Commission. Species List Phragmites/Phragmites sp. Curly-leaf Pond Weed/ Potamogeton crispus NOI Supplemental – Response to Agent Comment 635 West Yarmouth Road Yarmouth, MA Page | 3 Filamentous Algae 3. Provide the plans for monthly monitoring. Phragmites Prior to the start of any treatment, the three ponds will be surveyed. This initial pretreatment survey and report will help evaluate the densities and location of the Phragmites. This survey will help guide the application strategy and is a good baseline for the effectiveness of the treatment. The ponds will also be surveyed after to measure the effectiveness of the application of the herbicide and if additional treatment is needed. Following the application, monthly monitoring visits will be conducted in April – September to review the effectiveness of the treatment. These reports will also note the return and regrowth of native species in the target areas. Aquatic Vegetation and Aglae For the in-pond work, monthly inspections will be conducted April-September to observe the level of weed and algae growth and determine if treatments are necessary. 4. Provide a revegetation plan for the buffer to replace the phragmites once the desired level of control is reached. Please indicate the size of the buffer from the pond edges Often, after Phragmites has been treated and removed, native species will quickly re-establish. This is due to the competition for light, water and nutrients have been reduced. The monthly monitoring reports can note the regrowth of native species after the treatment has been conducted. If needed, a New England WetMix or a New England Conservation/Wildlife Seedmix can be used to revegetate the bank of the pond and replace the Phragmites. New England WetMix includes native wetland spcies including sedges, rushes, and wetland flowers. This blend was designed to establish/ reestablish heavy wetland vegetation cover.