Title
a. Consider approving Amendment No. 7 to the Professional Services Agreement with AECOM Technical Services, Inc., in the amount of $381,990 for services as follows:
1. $53,310 to provide annual safety surveillance and performance evaluation of San Antonio Dam for FY 2019-20;
2. $66,100 to provide San Antonio Dam low-level conduit access hatch design services;
3. $143,280 to provide Nacimiento Dam spillway plunge pool erosion evaluation and recommend improvements;
4. $119,300 to provide Nacimiento Dam flow control energy dissipating low-level outlet design services; and
b. Authorize the Interim General manager to Execute the Amendment.
Report
RECOMMENDATION:
It is recommended that the Monterey County Water Resources Agency Board of Directors:
a. Approve Amendment No. 7 to the Professional Services Agreement with AECOM Technical Services, Inc., in the amount of $381,990 for services as follows:
1. $53,310 to provide annual safety surveillance and performance evaluation of San Antonio Dam for FY 2019-20;
2. $66,100 to provide San Antonio Dam low-level conduit access hatch design services;
3. $143,280 to provide Nacimiento Dam spillway plunge pool erosion evaluation and recommend improvements;
4. $119,300 to provide Nacimiento Dam flow control energy dissipating low-level outlet design services; and
b. Authorize the Interim General Manager to Execute the Amendment.
SUMMARY/DISCUSSION:
San Antonio Dam Surveillance and Performance Evaluation
California Water Code Regulations require dam owners that are under the jurisdiction of the California Department of Water Resources Division of Safety of Dams (DSOD), to collect and evaluate dam instrumentation data, and to perform periodic dam inspections to ensure public safety.
Instrumentation data collected from 85 piezometers, 10 observation wells, 34 drains and 21 survey monuments allow the monitoring of seepage flows, embankment movement, and the dam stability of San Antonio Dam. Consulting engineers with ...
Click here for full text