Loading...
HomeMy WebLinkAboutAgenda Packet - Engineering & Operations Committee - 11/24/2020no public location DIAL: +1 209-425-5876 and enter CONFERENCE ID: 862515637# ENGINEERING AND OPERATIONS COMMITTEE November 24, 2020 - 2:30 PM 31111 Greenspot Road, Highland, CA 92346 In an effort to prevent the spread of COVID-19 and in accordance with Governor Newsom's Executive Order N-25-20 and N-29-20, this meeting is being conducted via teleconference. There will be for attending this meeting in person. Members of the public may listen and provide public comment telephonically. Anyone wishing to join the meeting may do so using the following information: You may also join by clicking HERE to connect and participate in the Microsoft Team Meeting AGENDA CALL TO ORDER PLEDGE OF ALLEGIANCE PUBLIC COMMENTS NEW BUSINESS 1. Approval of Minutes September 28, 2020 2. Operations Update on Leak Detection 3. Engineering Updates for November 2020 ADJOURN PLEASE NOTE: Pursuant to Government Code Section 54954.2(a), any request for a disability-related modification or accommodation, including auxiliary aids or services, that is sought in order to participate in the above-agendized public meeting should be directed to the District Clerk at (909) 885-4900 at least 72 hours prior to said meeting. DRAFT PENDING APPROVAL MINUTES OF SEPTEMBER 28, 2020 EAST VALLEY WATER DISTRICT September 28, 2020 ENGINEERING AND OPERATIONS COMMITTEE MEETING VIA TELECONFERENCE MINUTES Ms. Duran called the meeting to order at 2:30 p.m. and Mr. Noelte led the flag salute. PRESENT: Directors: Smith, Coats ABSENT: N/A STAFF: Jeff Noelte, Director of Engineering and Operations, Patrick Milroy, Operations Manager; Martha Duran, Sr. Administrative Assistant; Brenda Van Meter, Administrative Assistant; Shayla Antrim, Sr. Administrative Assistant; Christi Koide, Sr. Administrative Assistant; Ryan Ritualo, IT Manager GUEST(s): None PUBLIC COMMENTS There being no written or verbal comments, the public participation section was closed. APPROVE THE JULY 27, 2020 ENGINEERING AND OPERATIONS COMMITTEE MEETING MINUTES The minutes for July 27, 2020 were approved by unanimous roll call vote as presented. Operations Update – In-House Water Mains Project Mr. Milroy prepared information regarding In-House Main Projects. He stated that Field Service Staff identified six cul-de-sacs with undersized water mains and the lack of required fire hydrants. He provided an overview of each of the projects. He stated that one water main has a long leak history running under homeowners’ driveways and through front lawns on the far west side of the street with no curbing. Mr. Milroy reported that each of the streets fit the category of undersized main with a recorded leak history and being problematic. Mr. Milroy explained that in the past these areas would have been contracted out. However, it was determined that it was in the best interest of the rate payers and the District to complete the project with District staff that was experienced with this type of work. Page | 2 Minutes 9/28/2020 bvm Mr. Milroy stated that the Field Crews installed of over 1500 linear feet of 6-inch ductile iron pipe and six new fire hydrants, completing six individual streets. Barton is the last street with the 4-inch steel main and is 963 feet long with replacement starting at the beginning of 2020. Director Coats inquired about why fire hydrants were not in place when the homes were built. Mr. Milroy explained that the requirements have changed over the years and were not in place at the time the homes were built. He stated that fire departments typically run long lines of hose if they need to address a fire in the area. Director Coats also inquired about whether other areas like this were present. Mr. Milroy responded that more streets are identified as undersized or lack of protection, but none were in the condition of these that were recently updated to industry standards. He said that these will be addressed in the future either with in-house staff or a contractor. ENGINEERING UPDATES Sterling Natural Resource Center (SNRC) Mr. Noelte presented an overview of the progress at the Sterling Natural Resources Center. He reported the structural shells of the Administration and Operations Buildings are nearly complete. The three bio-trickling filter vessels for the odor control system have been installed. He stated the base slab for the Main Electrical Building has been constructed and much of the yard piping has been completed. Mr. Noelte discussed how the below slab piping for the Biosolids Building is constructed and the forming and pouring of that slab is upcoming. He reported that the aeration piping has been installed in the Aeration basins. Water Tank Rehabilitation Mr. Noelte presented information about the various tank rehabilitation work that is in progress. He expressed that the Plant 108 Reservoir bid package is 90% completed, which includes safety upgrades and coating rehabilitation. Mr. Noelte discussed that the District has been working with a consultant to develop a bid package for the reservoir located at Plant 143. The tank requires cleaning and potential modification of the current baffle system inside the tank. Mr. Noelte explained the options for the forebay at Plant 120. He discussed that the plant has been out of service for a few years due to sand production from the associated well, and a condition assessment of this tank has been conducted to identify repairs needed to put the plant back in service. Plant 134 Granular Activated Carbon (GAC) Project: Mr. Noelte stated that Plant 134 is being evaluated by design-build teams to install Granular Activated Carbon (GAC) at Plant 134. The teams have toured the facility and the proposal phase is nearly complete. He explained how the fundamental properties of GAC makes it an effective treatment technology. Page | 3 Minutes 9/28/2020 bvm Director Coats inquired as to life expectancy of granular activated carbon and how it is checked. Mr. Noelte responded that certain constituents are monitored as the flow enters and leaves the treatment vessels to determine when the GAC media needs to be replaced. When the GAC is exhausted, special equipment is used to clean out the vessels and prepare them to receive new media. ADJOURN The meeting adjourned at 3:13 p.m. David Smith Ron Coats Governing Board Member Governing Board Member STAFF REPORT Agenda Item #2. Meeting Date: November 24, 2020 Discussion Item To: ENGINEERING AND OPERATIONS COMMITTEE From: Operations Manager Subject: Operations Update - Leak Detection Survey RECOMMEND ATION: This report is provided to the Engineering and Operations Committee for its information only. BACKGROUND / ANALYSIS: A few years ago, when the State was respond ing to the drought, the State Water Resource Control Board (SWRCB) became more invo lved with water agenc ies on evaluating water conservation efforts. Water agencies were asked to complete an annual water aud it which exp lains all water produced, so ld, and flushed. Leaks in the system are noted and of course there is always some water loss that can’t be exp lained. If water loss can’t be tracked, then it must be dec lared as either theft or leaks that the water agency is unaware of. As part of the water aud it, it is recommended that water agenc ies follow best management practices and perform an annual leak detection survey using sound ing equipment to detect small leaks that don’t result in vis ible water at the ground surface. Although these leaks are relatively small, they can add up to a s ignificant water loss over time. The District recently worked with a contractor to complete this year’s survey. This was the third year the District has partic ipated in the program. The contractor was granted permiss ion to access water valves, fire hydrants and meters to connect sound ing equipment which amp lified sound to detect these small leaks. District field staff were availab le and responsib le to ad just equipment, for examp le, to turn a meter off if it was necessary to determine the location of the leak. This year 24 miles of pipeline were inspected at the northwest portion of the District. 22 small leaks were found by connecting the equipment to over 200 hydrants, 375 valves and 50 meters. The leaks found were estimated at a range of .25 gallons per minute (gpm) to 1.5 gpm, which corresponds to approximately 5 million gallons of water lost in a year. This is a fraction of a percentage of water lost when compared to total production (0.09 percent to be exact), but we now have the potential to avoid 5 million gallons of water loss per year. Staff takes pride in maintaining the water system and believes this is a successful program that will allow the entire District to be surveyed on a cycle of 8 to 10 years. AGENCY GOALS AND OBJECTIVES: Goal and Objectives IV - Promote Planning, Maintenance and Preservation of District Resources b) Enhance Planning Efforts that Respond to Future Demands c) Dedicate Efforts Toward System Maintenance and Modernization REVIEW BY OTHERS: This agenda item has been reviewed by the executive management team. FISCAL IMPACT The necessary funds are budgeted in contract services of the operating budget. Recommended by: Patrick K. Milroy Operations Manager ATTACHMENTS: Description Type Leak Detection Presentation Presentation November 24, 2020 LEAK DETECTION SURVEY •Leak Type •Hydrant •Description •Dry stack hydrant leak •Barrel full of water •Action Taken •Hydrant Flushed; leak remained •Recommendation •Repair / Replace Hydrant 2 CONEJO DRIVE AND ECHO DRIVE 3 LEAKS PINPOINTED Number Leak Type Location Gallons Per Minute (GPM) 1 Hydrant Conejo Dr. & Echo Dr.0.25 2 Service Line 3544 Modesto Dr.3.00 3 Hydrant 37th St. & Ferndale Ave.0.25 4 Hydrant 5412 Golondria Ave.0.10 5 Valve Osbun Rd. & Los Flores Rd.1.00 6 Valve 25409 Los Flores Rd.2.00 7 Hydrant 5402 Ironwood St.0.50 8 Hydrant Edgemont Dr. & Sterling Ave.0.10 9 Hydrant 5634 Argyle Ave.0.25 10 Curb Stop 5635 Blythe Ave. (Service on Glenmare St.)1.50 11 Hydrant 2465 Willow Dr.0.50 Total 9.45 4 SUMMARY OF SURVEY Utility Services Associates used a sonic leak detection amplification instrument to complete this survey. Appurtenances Surveyed Hydrant 216 Valves 375 Services 44 Other 10 Total 645Total Water Loss Identified Gallons Per Minute (GPM)9.45 Gallons Per Day 13,608 Gallons Per Month 413,910 Gallons Per Year 4,966,920 Total Areas Surveyed Total Distance in Miles 23.9439 Total Distance in Feet 126,424 The mileage was estimated by the Water Loss Consultant and may not match maps. 5 N LEAK DETECTION COMPLETION MAP: 2018 -2020 Area Completed in 2018 S TAF F R E P ORT Agenda Item #3. Meeting Date: Novemb er 24, 2020 To: ENG I NEE R I NG AND O P ER AT I O NS C O MMI T T E E F rom: G eneral Manager/C EO Subject: Engineering Up d ates for No vemb er 2020 R E C O MME N D AT IO N: T his rep ort is p ro vided to the Engineering and O perations C ommittee for its info rmation only. B AC KGR O UN D / AN ALYS IS : Up d ates are p ro vided below for three items that Engineering s taff are working o n. S terling Natural R es ource C enter: T he concrete po rtion of the Head works s tructural shell has been completed. T he o d o r c o ntrol fans and much of the ab o ve grad e foul air ducting have been ins talled . T he Main Electrical Build ing has b een c o nstruc ted . T he concrete walls o f the Bio s o lid s Bldg are b eing fo rmed . Aeration diffuser p ip ing has b een ins talled in the Aeratio n Bas ins. Influent P ump S tatio n p ip ing and p ump pedes tals are being ins talled. C o nstruc tion p ro gress p ho tos are s hown in Exhibit 1. Development Updates: C o ns tructio n has b egun o n P has e 1 & 2 of the Med iterra res id ential d evelopment, whic h will inc lude ab out 150 homes acros s the Dis tric t Head q uarters . Water main c o nnec tions have been mad e in G reens p o t and grad ing work is taking p lace. A Water S ystem S tud y is being c o nduc ted for the Highland Hills res id ential d evelo p ment to determine d esign criteria fo r the water s torage and conveyance infras tructure. P lant 101 R ehabilitatio n P ro jec t: T he Dis tric t’s consultant is wrap p ing up the design fo r the rehab ilitatio n of the hydro-pneumatic sys tem (p ump s , hyd ro tank, elec trical eq uipment) S o me grant fund ing is b eing purs ued to p ro vide a s tatio nary b ackup generator for the fac ility. If s ucc es s ful, a s tationary generato r will b e provid ed instead of a p o rtable unit. R es p ec tfully s ubmitted : Jeff Noelte Directo r o f Engineering & O perations AG E N C Y G O ALS AN D OB J E C T IVE S : G oal and O b jectives I - Implement Effec tive S o lutio ns T hrough Visionary Leadership a) Identify O pportunities to O p timize Natural R esourc es G o al and O bjec tives I V - P romo te P lanning, Maintenanc e and P res ervatio n o f Dis tric t R esources a) Develop P ro jec ts and P ro grams to Ens ure S afe and R eliable S ervices c) D edicate E fforts Toward S ystem M aintenance and Modernization R E VIE W B Y O T HE R S : T his agenda item has been reviewed by the executive management team. F IS C AL IMPAC T T here is no fis cal impac t as s o c iated with this agend a item. ATTACH M E N TS: Description Type Exhibit 1 Exhibit AGENDA DATE: November 24, 2020 SUBJECT: ENGINEERING REPORT FOR NOVEMBER 2020 Page | 3 Exhibit 1: SNRC Construction Photos Headworks Roll-off Bin Area Foul Air Ducting at Headworks AGENDA DATE: November 24, 2020 SUBJECT: ENGINEERING REPORT FOR NOVEMBER 2020 Page | 4 Exhibit 1 continued Odor Control Vessels Main Electrical Building and Transformer Pads AGENDA DATE: November 24, 2020 SUBJECT: ENGINEERING REPORT FOR NOVEMBER 2020 Page | 5 Exhibit 1 continued Biosolids Building Wall Forms Aeration Basin Piping AGENDA DATE: November 24, 2020 SUBJECT: ENGINEERING REPORT FOR NOVEMBER 2020 Page | 6 Exhibit 1 continued Aeration Basin Coating Influent Pump Station Dry Pit