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Home My WebLink About19.a. Committee Minutes-Engineering & Operatons 06-01-22 Page 1 of 7 Item 19.a. CENTRALSAN jdf A- hom CENTRAL CONTRA COSTA SANITARY DISTRICT June 16, 2022 TO: HONORABLE BOARD OF DIRECTORS FROM: KATIE YOUNG, SECRETARYOF THE DISTRICT SUBJECT: JUNE 1, 2022 - ENGINEERING & OPERATIONS COMMITTEE - CHAIR LAURITZEN AND MEMBER HOCKETT Attached are minutes of the above Committee meeting. ATTACHMENTS: 1. Minutes of 06-01-22 meeting June 16, 2022 Regular Board Meeting Agenda Packet- Page 745 of 771 Page 2 of 7 CENTRAL SAN CONTRACENTRAL • DISTRICT 5019 • REGULAR MEETING OF THE BOARD oFDIRECTOR WILLIAMS DAVID R. WILLIAMS CENTRAL CONTRA COSTA President SANITARY DISTRICT BARBARAD.H° President ProroTem ENGINEERING & OPERATIONS MARIAHNLAURITZEN COMMITTEE MICHAEL R.MCGILL TAD J PHECKI MINUTES PHONE: (925)228-9500 FAX: (925)372-0192 Wednesday, June 1, 2022 www.centralsan.org 11:00 a.m. (All attendees participated via videoconference) Committee: Chair Mariah Lauritzen Member Barbara Hockett Guest: Doug Chen, Discovery Builders (left after Item 4.a.) Staff. Roger S. Bailey, General Manager (joined during Item 4.a.) Katie Young, Secretary of the District Philip Leiber, Director of Finance and Administration (joined during Item 4.b.) Steve McDonald, Director of Operations Jean-Marc Petit, Director of Engineering and Technical Services Edgar Lopez, Capital Projects Division Manager Lori Schectel, Environmental and Regulatory Compliance Division Manager (left after Item 4.b.) Rita Cheng, Provisional Senior Engineer (left after Item 4.b.) Dana Lawson, Senior Engineer (left after Item 4.a.) Sasha Mestetsky, Senior Engineer Craig Mizutani, Senior Engineer (joined during Item 4.a.) Will Grant, Associate Engineer (joined during Item 4.a., left during Item 4.c.) Damasio Zepeda, Associate Engineer (left after Item 4.c.) Khang Nguyen, Assistant Engineer (left after Item 4.b.) Amelia Berumen, Assistant to the Secretary of the District 1. Notice This meeting was conducted virtually in accordance with the provisions stipulated in Assembly Bill 361 and adopted on May 5, 2022, by the Central San Board of Directors. The agenda included instructions for options in which the public could participate in the meeting. June 16, 2022 Regular Board Meeting Agenda Packet- Page 746 of 771 Page 3 of 7 Engineering & Operations Committee Minutes June 1, 2022 Page 2 2. Call Meeting to Order Chair Lauritzen called the meeting to order at 11:00 a.m. 3. Public Comments No public comments. 4. Agenda Items a. Review draft Position Paper to conduct a public hearing on June 16, 2022 to receive public comment and consider adopting an uncodified Ordinance to establish the Central San Standard Specifications for Design and Construction, 2022 edition, as the District's standard specifications in accordance with District Code Section 9.09.010, to become effective July 1, 2022 Ms. Lawson presented a comprehensive overview of the proposed changes to the current 2020 version of the design/construction Standard Specifications. The main driver for this update was to incorporate necessary changes attributed to the newly approved manhole cover design and associated standard drawings. Moreover, the standard specifications have been relatively narrative which made the information difficult for users to understand the requirements or to navigate. As such, many areas were updated to list the information as bullet points; other areas received an expansion or clarification of information. In addition, part of the update included explanation of the "basic sewer service policy"since legislation is encouraging construction of accessory dwelling units (ADUs), which allows multiple ADUs to be built on a parcel. Recent legislature provided a maximum allowance of six units on one parcel, as applicable. In response, the specifications now reflect that only one connection per parcel is necessary, not six; and when parcels are subdivided, shared laterals must also be separated at that time. Any exceptions will be considered on a case-by-case basis as necessary. The Permit Counter often discovers shared laterals in some of the older service areas, which can later become a property dispute. These updates will provide clearer guidance for the applicant and staff of ADU permit requirements. A discussion ensued on this topic and various scenarios. Some of the other highlighted updates included, but are not limited to: • Clarification of application/plan/permit timelines and expiration periods. This was included to provide effective time periods since plans or sites may change over time. (Section 3-02) June 16, 2022 Regular Board Meeting Agenda Packet- Page 747 of 771 Page 4 of 7 Engineering & Operations Committee Minutes June 1, 2022 Page 3 • Section 4-09, related to structures, received an update to address cleanouts, included references to applicable Plumbing Codes, and now includes specification related to gravity flow. • General guidelines and criteria regarding pet waste have been incorporated in Section 5-06, which will assist the Environmental Compliance group with compliance oversight on that matter. • The Design Criteria General Provisions was amended and moved forward within the section the reasoning Central San cannot use existing ratepayer funds to serve new customers. (Section 8-01) • Staff amended the pipeline alignment specifications within Section 8-07 to clarify the location of sewers for those that may need to extend a service, as well as Central San access to those sewers. Ms. Lawson explained Part IV of the document is undergoing coordination efforts to establish standard specifications related to recycled water. Recycled water is receiving more interest, but remains as a placeholder section at this time. As it related to the phrase "manhole covers,"Member Hockett asked whether the terminology needs to be amended in this document based on other recent staff updates. Ms. Gemmell acknowledged the inquiry and responded the term now more commonly used is sewer access covers, or maintenance access covers. Ms. Lawson indicated she would follow-up with the Communications team and incorporate any updates to the next round of specification amendments. Chair Lauritzen stated she appreciated the readability of this update that she opined adds transparency of local government and the effort to avoid future issues so designs may be submitted correctly. COMMITTEE ACTION: Recommended the Board conduct the public hearing. b. Review draft Position Paper to authorize the General Manager to execute a technical consulting services agreement in an amount not to exceed $1,078,000 with Montrose Air Quality Services, LLC to provide treatment plant emissions testing services for a five-year period covering Fiscal Years 2022-27; and find the agreement is exempt from the California Environmental Quality Act Ms. Cheng provided an overview of the information provided in the agenda materials. In response to an observation made by Member Hockett of the intricate technology involved, Ms. Cheng concurred that the emissions testing and associated testing equipment are specialized, quite complex, and expensive. June 16, 2022 Regular Board Meeting Agenda Packet- Page 748 of 771 Page 5 of 7 Engineering & Operations Committee Minutes June 1, 2022 Page 4 The Committee had no questions or concern. COMMITTEE ACTION: Recommended Board approval. C Review draft Position Paper to award a construction contract in the amount of $4,122,454 to Precision Engineering, Inc., the lowest responsive and responsible bidder for the Walnut Creek Sewer Renovations, Phase 16, District Project 100023; include additive bid schedule up to the amount of $472,000 for sewer replacement within contaminated soils; and find that the project is exempt from the California Environmental Quality Act Mr. Zepeda reviewed the contents of the draft Position Paper agenda materials. He stated this project will renovate approximately 11,000 feet of sewer pipeline, which is higher than a typical renovation project that may generally reach up to 9,000 feet. In response to an inquiry by Member Hockett of Precision Engineering's experience, Mr. Zepeda advised the contractor has experience with both Central San and the City of Walnut Creek since they performed the work on the Walnut Creek-Phase 14 project. The bid did have an arithmetic discrepancy that was corrected, as allowed in the contract specifications, which netted to a $20,000 difference but remained as the apparent low bid. Additionally, staff recommends including award of the additive bid item, which is deemed a necessary scope task to properly handle known contaminated soils within the project area. The Committee had no further questions. Chair Lauritzen commended staff for the engineer's estimate falling within the mid-range of bids received. COMMITTEE ACTION: Recommended Board approval. d. Review draft Position Paper to authorize the General Manager to execute a construction contract change order in the amount of $300,000 with McGuire & Hester to upgrade to high security fencing and gates for the Contractor Staging Improvements, District Project 7375 Mr. Lopez stated part of the original scope of the project awarded last year was for fencing. However, since design and award of the project, the District has reevaluated its fencing and security needs, especially as some fence areas are commonly cut. Moreover, with the contractor staging and paving work completed for the future recreational vehicle (RV) waste transfer station, more contractor and public activity is anticipated within the area shown in fencing location map. June 16, 2022 Regular Board Meeting Agenda Packet- Page 749 of 771 Page 6 of 7 Engineering & Operations Committee Minutes June 1, 2022 Page 5 It was noted no fence is impenetrable; however, Mr. Lopez described the proposed fence work to be the best-fit for a mid-range and cost-effective secure fence. This fencing material would not be as easy to penetrate as the current chain link fence. As part of the District's evaluation of security needs, this type of fence is also recommended for other portions of the treatment plant to bolster problematic areas. Mr. Lopez acknowledged the cost proposed may appear high, but other quotes received were well over$200,000 higher in cost. He advised multiple quotes were obtained and a sole cost was not relied upon. He stated the Risk Management division is supportive of this improvement and has lobbied for additional sites for future projects. Chair Lauritzen inquired if cameras have been considered for areas that have security breaches. Mr. Leiber added that cameras are an important element, and a comprehensive security assessment had been completed a few years ago. Unfortunately, some delays were experienced to acquire equipment that have been reconciled and additional cameras will be purchased. Mr. Lopez advised that staff plans to install cameras at the new RV station in addition to long-term plans to strategically implement installation of cameras throughout the treatment plant. COMMITTEE ACTION: Recommended Board approval. 5. Announcements Ms. Young reminded the Committee Members that the June 2 Board meeting and closed session would be held virtually. Mr. Petit stated that since the June 2 special pre-meeting facility tour of the Membrane Pilot Project had been cancelled, staff plans to provide a virtual tour of the project at a future Board meeting since the pilot will not be operational for much longer. 6. Suggestions for Future Agenda Items a. Receive list of upcoming agenda items and provide suggestions for any other future agenda items COMMITTEE ACTION: Received the list. June 16, 2022 Regular Board Meeting Agenda Packet- Page 750 of 771 Page 7 of 7 Engineering & Operations Committee Minutes June 1, 2022 Page 6 7. Future Scheduled Meetings Wednesday, June 22, 2022 at 11:00 a.m. Wednesday, July 6, 2022 at 11:00 a.m. Wednesday, August 3, 2022 at 11:00 a.m. 8. Adjournment— at 11:45 a.m. June 16, 2022 Regular Board Meeting Agenda Packet- Page 751 of 771