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City staff halts contractor work after finding silt‑management and outlet‑structure discrepancies in Water Crest ponds
Summary
Haslet staff reported construction discrepancies at retention/detention ponds in the Water Crest and The Vines developments: contractor mucking was halted after staff observed sediment releases downstream and an outlet structure inconsistent with approved plans; the city will investigate as‑built conditions and review the contractor’s stormwater plan.
City staff told the June 15 council meeting that contractor activity at retention ponds in the Water Crest and The Vines developments was temporarily suspended after on‑site inspections revealed sediment and outlet details that do not match the approved construction plans.
What staff found: Project photographs and an earlier (2020) regional detention study were reviewed in council session. Staff said the amenity ponds on HOA lots in the developments were designed as retention (normally wet) facilities and not as detention basins, and that a 2020 Hydrolink study had been used to size connected regional detention basins. During a recent site visit a contractor had been dredging a northern retention pond and stockpiling silt on the downstream side of a dam; the outfall/weir arrangement staff observed appears to differ from the as‑built outlet in the record drawings.
Staff action: The contractor’s site work was stopped pending review. Staff said the contractor lacked sufficient best management practices (BMPs) during the mucking, allowing silty material to flow downstream. City staff will obtain and examine the contractor’s stormwater management plan, compare the as‑built structures to the approved plans, and return to council with recommendations for corrective work and responsibility for remediation.
Why it matters: Staff noted HOA ownership of amenity ponds means the HOA has primary maintenance responsibility, but improperly constructed or modified outlet structures, or removal of required outlet pieces, can impair downstream drainage infrastructure and affect private properties. Residents reported increased sediment and cattail growth downstream near Maxwell Circle, indicating long‑term accumulation.
Council direction: Staff will continue the investigation, request the contractor’s stormwater plan and permit materials, document mismatches between construction and design plans, and report back with recommendations for corrective action, allocation of responsibilities and cost recovery options if appropriate.
Quote from staff: “There is a discrepancy between the outlet structure as shown in the plans and what was observed in the field,” Mike Anderson said. “We halted the contractor until a plan is submitted that prevents further siltation downstream.”
Next steps: City staff will coordinate inspections, review the as‑built record versus approved plans, and return to council with a remediation plan and recommended steps to ensure downstream properties and city easements are protected.
