16. Recommendation to approve Amendment No. 4 to the Agreement for Professional Consulting Services between DOWL (formerly Farr West Engineering) and Washoe County to provide final design, geotechnical engineering, permitting, and bid support services for the Hidden Valley Regional Park - Effluent Disposal Facility project [in the amount of $439,000.00 for a total of $840,000.00]. The Hidden Valley Regional Park is located at 4740 Parkway Drive, Reno, Nevada. Community Services. (Commission District 2.) FOR POSSIBLE ACTION