Ms. Osborne wn ,
(PER cscs
November 18, 2016
Page 4o0f5
OD ecees
S. Develop specific recommendations for wet weather flow system modifications, as well as
possible operational/controls changes required to minimize future overflow of untreated
wastewater.
B. Wet Weather Treatment System:
1.
Evaluate operation and control system modifications for improving the performance to the
wet weather flow treatment facility (Actiflo System) ideally so it can effectively treat pumped
wet weather flows of up to 60 mgd. This includes evaluation of the chemical and blast feed
systems, mixing/coagulation/maturing, effluent clarification, and sludge handling systems.
Identify any equipment, structure, piping, controls or operations which affect the Wet
Weather Facility’s capacity to effectively nandie and treat the design peak flows reaching the
facility.
Develop recommendations for wet weather treatment system modifications to improve the
effective treatment of identified design flows.
C. Summary Reports: Each of the above phases of work (Influent Hydraulic Analysis and Wet Weather
Treatment Systems) will result in:
1.
SCHEDULE
A technical memorandum summarizing the findings of the evaluations, and a capital upgrade
plan to address identified issues, including budgetary cost estimates associated with the
suggested modifications.
A technical workshop with City staff to review the preliminary modifications list, and
incorporate City comments in the final memoranda.
W-P will commence work on this project immediately upon receipt of authorization to proceed. We
expect to complete the above scope items within 16 weeks, and will be ready to move quickly into the
desired implementation phase selected by the City.
ESTIMATED FEE
Based on our proposed project scope, we estimate the effort to complete the various aspect of the work,
as follows:
@
influent Hydraulic Analysis - approximate effort of 120 staff hours and a total engineering fee
of $18,700.
Wet Weather Treatment System Evaluation - approximate effort of 100 staff hours and a
total engineering fee of $16,400.
