Consent Calendar Item g
STAFF REPORT
City Council Consent Item
DATE: September 19, 2022
TO: Honorable Mayor and Council Members
FROM: Brendan Byrd, Public Works Director/City Engineer SUBJECT: Public Works/Engineering Department Monthly Report STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
Public Works Director/City Engineer
Annual Contracts
In August staff released for informal bid the annual concrete, paving, and striping contracts. Bids are due back in early- to mid-September for all contracts, and staff anticipate taking award recommendations to the Council on the October 3rd meeting.
Rohner Park Basketball Court Project
In 2022 parks and engineering staff have been working on developing plans for the Rohner Park Basketball Court Reconstruction Project, which proposes to replace the existing court at Rohner Park with two new courts. The new courts will include upgraded rims and backboards, acrylic court surfacing, protective fencing, and a courtyard with landscaping and picnic tables. In early September, the plans were finalized and the project was advertised for bid, with the bid opening date set for October 6th. Staff anticipate taking the project to the Council for an award recommendation at the October 17th meeting.
HSIP Grant Applications
In August and September staff worked with our on-call engineering consultant to develop a Highway Safety Improvement Program (HSIP) grant application. The application was successfully submitted on September 9th. The grant application includes improvements to several of the City’s signalized intersections, and the proposed work would include updating the signal cabinet controllers, signal heads, pedestrian push buttons, and re-evaluating signal timing based on current traffic patterns. Staff anticipate hearing on the success of this application by early 2023.
P Street Sewer Line Replacement
During routine sewer camera activities in early 2022, the utilities crew found a portion of sewer pipe on P Street, in between 9th Street and Garden Lane, to be in disrepair and in need of replacement. In early September staff began working with our on-call engineering consultants to develop design plans for the repair, and staff anticipate completing the work sometime in early to mid-2023.
Consent Calendar Item g
Kenmar Road Interchange Improvement Project
The City’s engineering consultant completed and submitted to Caltrans the draft 30% design plans for the Kenmar roundabouts in August. Caltrans has completed their review of the plans, and at this time staff are anticipating that in the next month the City should have approved 30% drawings which can be used in the City’s final CEQA and NEPA documentation for the project, which is currently under development. Staff anticipate that CEQA and NEPA adoption will be finalized in early 2023, and therefore the preliminary design and environmental documentation work will be completed, and staff will be working to identify other forms of funding that can transition this project into the final design phase.
12th Street Interchange Modernization Project
With the Council authorizing contract award at the September 6th meeting, staff have begun working on contracting with GHD. Staff anticipate contracting to be complete within the next month, and work should begin on the project in October. 12th Street Stormwater Project
The City’s engineering consultant has been working on developing the 90% design plans for the 12th Street Stormwater project, which will include installing LID raingardens and new stormdrain pipe along 12th Street in front of the high school. In August, City staff potholed for utilities along 12th Street in a number of locations to identify conflicts or constraints for the design of the new stormdrain pipe. At the time of this staff report the potholes have not been fully restored with hot mix asphalt, however that work should be completed soon.
Utilities Division- Utility Lead
Service Call Summary
• In the month of August the utilities division completed 123 service calls by operators.
Figure 1 below shows the distribution of service calls by type. • The division completed 75 Underground Service Alert (USA) mark and locates with two miss-marks, resulting in zero broken utilities.
Figure 1. Utility division service calls by type in August.
Water Distribution System
• Read water meters, and completed meter worksheet.
0 5
10 15
20 25
30 35
40 45
Connect Disconnect Occupant Change Service Action
Number of Calls
Service Call Type
Consent Calendar Item g
• Utilities staff installed three new services to the system in the month of August. • In August there were four water leaks resulting in an estimated 666,720 gallons of water loss.
• In the month of August utilities staff changed out 15 dead water meters. • Replaced one old thin black and two thin blue poly services. • Started to check service lines for lead inventory compliance regulations from the EPA. • Performed Backflow Prevention Device testing.
Table 1. Water leak rate and water loss estimates for August 2022.
Wastewater Collections System
• Utilities staff was not able to televise any sewer main this month as we are short staffed. • Utilities staff fixed four sewer plugs in the month of August with no overflows. • Utilities cleaned 6,000 feet of sewer main.
Miscellaneous Tasks
• The utilities team performed monthly maintenance on the division’s heavy equipment, including greasing and checking all fluids.
Water Treatment/Wastewater Division- Chief Plant Operator Well 5B: Staff sampled all active well water sources for various constituents. This will help in determining future treatment and infrastructure necessary for the planned new well—Well 5B— which will replace failing Well 5.
Sewer System Model and Master Plan: Staff worked with consultant GHD engineers on the Sewer System Model and Master Plan CIP project, touring each of the City’s nine sewer lift stations for inspections and a general site visit.
Date Location Pipe
Information
Estimated
Leak Rate
(Gallons per
Minute)
Leak
Duration
Total
Estimate
Leak
Volume
(Gallons)
8/3/2022 Meadow ln 4’’ Blue Bell
(Plastic)
3 90 Days 388,800
8/9/2022 848 Newell Dr 2’’ Ductile
Iron
1 5 Days 7,200
8/19/2022 136 Main 1’’ Thin
Black Plastic
1 8 Days 11,520
8/31/2022 3781 Kenmar Rd 1’’ Blue CTS
(Plastic)
2 90 Days 259,200
Consent Calendar Item g
Risk Management Plan: Staff completed the 5-year renewal of the Risk Management Plan for both the wastewater treatment plant and the water wells site. This document focuses on the storage and handling of the hazardous chemicals onsite, especially chlorine and sulfur dioxide gases.
Division Staffing: New Operator-in Training Samuel Berrey started work late in the month. This brings the wastewater treatment plant to nearly full-staff status.
Wastewater Treatment
Table 2. August wastewater plant effluent flows for the past five years in Million Gallons (MG) and Million Gallons per Day (MGD).
Figure 2. August wastewater plant effluent flows for the past five years in Million Gallons (MG) and Million Gallons per Day (MGD).
Wastewater Events & Maintenance Tasks Completed:
• Staff worked on de-ragging pumps at the Laurelwood sewer lift station. • Staff switched primary clarifiers due to sludge pumping issues on one of the units. New parts are on order to restore the out-of-service pump.
• Staff rehabilitated a few of the long compost bays, removing vegetation and filling in gravel to the center drain channels.
25.5 26
26.5 27
27.5 28
28.5 29
0 0.2
0.4 0.6
0.8 1
1.2 2018 2019 2020 2021 2022
Total Flow, MG
Flow, MGD
Total Monthly Flow, MG MAX Daily Flow, MGD AVG Daily Flow, MGD Year 2018 2019 2020 2021 2022
Total Monthly Flow, MG 26.948 28.331 28.401 26.630 26.560 Maximum Daily Flow, MGD 1.015 1.056 1.130 1.000 1.000
Average Monthly Flow, MGD 0.869 0.914 0.916 0.859 0.857 Consent Calendar Item g
• Staff worked on the aeration piping in the out-ofservice aeration basin, installing new pipe, unions, and tees to resolve minor air leak issues. Staff also replaced clogged piping for an air lift pump in one of the sidestream process tanks. • Staff changed out the chlorine residual analyzer for
the chlorine contact basins (see photo inset left). The new unit replaces an older one that required excessive
operator time and attention, and often read inaccurately, causing numerous effluent violations. The new unit also matches the other one
at the plant, which is
used to register
complete dechlorination of the
final effluent. Both
units now have identical parts and reagents, improving
plant redundancy and operator training.
• Staff replaced the grit screw in the cyclone grit classifier (see photo inset right). The old one had worn down over the years beyond proper operability. This unit operates in an extremely abrasive environment, removing sand and
grit from the wastewater. The new unit should improve
grit removal efficiency and last for years to come.
Water Treatment
Table 3. August potable water production for the past five years in Million Gallons (MG).
Figure 3. August potable water production for the past five years in Million Gallons (MG). 0 0.5
1 1.5
2 2.5
0 10
20 30
40 50
60 2018 2019 2020 2021 2022
Flow, MGD
Production, MG
Production Max Daily Avg Daily
Year 2018 2019 2020 2021 2022
Total Production, MG 44.226 49.300 53.650 44.914 42.600 Maximum Daily, MG 1.749 2.047 2.199 1.989 1.735
Average Daily, MG 1.427 1.590 1.731 1.449 1.374
Consent Calendar Item g
Table 4. Average August depth-to-groundwater static levels in the City’s active wells for the past five years in feet.
Figure 4. Average August depth-to-groundwater static levels in the City’s active wells for the past five years in feet.
As shown in the charts above, daily water consumption remains low relative to historic averages, and the groundwater levels remain generally consistent with those measured over the past 5-year in August.
Water Events & Maintenance Tasks Completed:
• Staff spent time trouble-shooting the Drake Hill pump station as there had been reports of reduced pressure at the furthest extents of the system. The pressure transducer that controls pump settings and provides adequate water pressure to the farthest reaches of the station’s distribution system was determined to be faulty, requiring replacement and calibration.
Staff have continued to monitor the situation to ensure the issue has been corrected, and currently all customers are reporting consistent and ample water pressure. 0 10
20 30
40 2018 2019 2020 2021 2022
Static Level, ft
Well #1 Well #2 Well #4 Well #5
Year 2018 2019 2020 2021 2022
Well #1 29.7 28.7 28.2 30.4 30.2
Well #2 26.9 25.8 25.2 27.6 27.3
Well #4 32.4 29.6 30.7 33.0 32.7
Well #5 33.4 32.0 32.6 34.8 34.5
Consent Calendar Item g
General Services and Streets - General Services Superintendent The following is a list of scheduled assignments completed by the General Services staff in August:
• Staff removed two sections of concrete sidewalk that
had become trip hazards. The trip hazards were both
located on Fortuna Boulevard. Staff replaced with
new concrete. (See photo inset right. Fortuna
Boulevard and Redwood Way).
• Staff repainted yellow school zone prior to the first day of the school.
• Staff potholed multiple locations on Twelfth Street.
The locations were in between K Street and I Street.
The potholes were to locate existing infrastructure for the upcoming LID storm drain project.
• Staff prepared and assisted in setting traffic control measures for First Friday’s. The First Friday special event is on Main Street, in between Ninth Street and Twelfth Street. Staff removed traffic control measures after the event. • Staff weed whipped vegetation in the railroad
right of way in between Third Street to Twelfth
Street. Staff mowed the newly acquired field
next to Newburg Park. Staff removed low
hanging tree limbs along the lower section of
Kenmar Road near Fortuna Boulevard. Staff
weed whipped the retention basin at Forest
Hills. (See photo inset right).
• Staff dropped off the boom mower tractor for
the monthly gymkhana at the arena. The Parks
staff uses the tractor to prepare the arena for an event. • Staff painted white stop markings, stop bars, and crosswalks throughout the City. • Staff was called to repair a traffic signal fixture that was hit at Fortuna Boulevard and Newburg Road. One visor was reattached. Another visor had to be ordered. • Staff placed additional red curb areas per request of the Traffic Safety Committee. Traffic Safety Committee received request from citizens.
• Staff removed Hops in Humboldt banners.
• Staff removed a dilapidated carport cover next to the Dog Kennel in preparation for a metal storage unit.
Consent Calendar Item g
In addition to the special tasks noted above, staff also engaged in the following regular routine maintenance activities including USA’s, street sweeping, recycling and trash management, road maintenance, vegetation management, and safety training and inspections. Staff is available for questions, requests, and emergency responses to the community.
RECOMMENDED COUNCIL ACTION:
Receive Public Works Department Monthly Report. Consent Agenda vote.