Agenda - 08-23-1993 - C 2 and C 3 attch

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Ponds can severely disturb the sensitive ecology of headwater streams. Water can heat up rapidly in the summer and increase downstream water temperature. This can be mitigated somewhat by including a bottom water release, over-sizing the pond, and providing shading near the 1 4 perimeter. Inspections and Maintenance of the Completed Structure Inspections The pond must be inspected at least once a year by the owner or their agent. If the owner or homeowner's association is not capable or qualified, a qualified professional, preferably the designer, should be retained to perform the inspections. Responsibility is the owner's even though County personnel will perform periodic inspections to ensure continued compliance and performance. Inspection should look for: embankment subsidence; erosion of slopes or spillway; cracking of the embankment; growth of undesirable vegetation; condition of riser, barrel, and other pipes, seepage below or through dam (often indicated by wet soil below the dam); sediment accumulation, clogging of inlets to pipes; and condition of upstream and downstream channel protection. Those inspecting the pond show use as built plans. Where problems are discovered corrective action should be initiated by the owner and not put off for County staff to discover. Maintenance Routine maintenance should include: mowing grass; fertilizing_grass and reseeding areas where vegetation may have failed, particularly on the dam and the emergency spillway; removal of undesirable vegetation; removal of trash and other debris that could clog the outlet structure; removal of floating debris from the trash guard around the pipe inlet; Dedication of land and Responsibility for Maintenance Dedication Responsibility of owner or owners. may be homeowners association but this can always be dissolved so plat and agreement (deeds) must state that it belongs to the owners. DRAFT 11 June 1993