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Information about the Roberts Ridge retention pond.
UPDATED 5/14/22 after extension agent's second visit
Members of the neighborhood and board of directors met with a county extension agent on April 18 and again on May 12. On the 18th the agent determined that the early algae bloom was caused by excessive nitrogen from a very early grass treatment, coupled with lots of rain. The board has made changes to how the common areas around the pond will be treated by the lawn company. Other recommendations made by the extension agent who specializes in all types of ponds were:
1. A "no-mow" area has been created around some of the perimeter of the pond. He said the grass would not grow out of control because of the type of grass it is. This taller grass would help absorb fertilizer as it drains down the hill, allowing less into the pond where it can affect the algae growth. Mowing to the to edge of the pond in several places allows for fishing access.
2. There was an idea to plant bushes or shrubs in the areas of main drainage on the hillsides leading down to the pond to help eliminate the mud and to help prevent further erosion and to provide roots to help absorb some fertilizer chemicals before they get to the pond. After taking soil samples on May 12, the extension agent said the soil was mostly clay and gravel, and would not support the kind of plantings needed for this purpose.
3. Residents should not put grass clippings in the street where they end up in the storm sewer which leads directly to the retention pond.
The HOA board will continue researching these and other options.
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