My WebLink
|
Help
|
About
|
Sign Out
02 ATTACHMENT 1
City of Pleasanton
>
CITY CLERK
>
AGENDA PACKETS
>
2023
>
012623 SPECIAL
>
02 ATTACHMENT 1
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/20/2023 5:43:46 PM
Creation date
1/20/2023 5:24:13 PM
Metadata
Fields
Template:
CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
1/26/2023
DESTRUCT DATE
15Y
Document Relationships
02
(Message)
Path:
\CITY CLERK\AGENDA PACKETS\2023\012623 SPECIAL
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
274
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update <br />Errata Final EIR <br /> <br /> <br />3-30 FirstCarbon Solutions <br />https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/EIR/4 - Final EIR/21480022 Sec03-00 Errata.docx <br />Wastewater Treatment <br />The RWTF handles wastewater from the city (aside from the wastewater from the Ruby Hills <br />housing development, which is treated at the LWRP). The City currently owns 8.5 mgd of <br />secondary treatment capacity from the RWTF. The RWTF includes secondary, tertiary, and <br />advanced recycled water treatment facilities. The current average dry-weather wastewater- <br />flow design capacity of the secondary treatment facilities is 17 mgd with an ultimate <br />required capacity of 20.7 mgd at buildout of the 2020 UWMP in 2045. 10.4 mgd of this <br />influent is projected to originate from the DSRSD service area and the remaining 10.3 mgd of <br />influent is projected to originate from the city. DSRSD RWTF is permitted to operate the <br />secondary treatment facilities up to 17 million gallons per day on average dry weather flow. <br />A permit change for the secondary treatment facilities will be required for DSRSD to increase <br />the secondary treatment capacity to treat additional influent flow at buildout (2045). <br />Conventional secondary treatment methods include primary sedimentation, activated <br />sludge secondary treatment, chlorine disinfection, and effluent pumping. A portion of the <br />secondary effluent undergoes the tertiary treatments of sand filtration and ultraviolet (UV) <br />disinfection, which has a treatment capacity of 16.2 mgd. Backup facilities exist to handle <br />times of low or high demand, with a capacity of 3 mgd. <br />Page 3.15-35, Third Full Paragraph <br />In response to ZONE 7-4, the following paragraph has been revised: <br />Water Supply and Groundwater Contamination <br />As described above, because of PFAS contamination in the city’s groundwater, the City has <br />determined that all groundwater supply wells for the city may be taken out of commission <br />no later than the first quarter of 2023. Currently, groundwater makes up approximately 20 <br />percent of the total water supply for the City, and, if the existing groundwater supply wells <br />are taken out of commission, this 20 percent will not be available to the City without <br />treatment or additional supply sources. Zone 7 has not identified any impacts to Zone 7’s <br />water supply for the city as a result of the elevated pollutants of concern in groundwater. <br />However, as state regulations concerning PFAS continue to evolve, they have the potential to <br />impact ZONE 7’s well production, similar to the City’s groundwater supply. The City will <br />continue to coordinate with Zone 7 regarding impacts to Zone 7 groundwater supply <br />associated with PFAS. The elevated pollutant level in the city’s groundwater supply directly <br />affects water supply available from local groundwater supply wells for any development <br />application consistent with the Housing Element Update. <br />The City’s total projected water supply minus the approximate 20 percent groundwater <br />supply is shown in Table 3.15-8 for the years 2023, 2024, 2025, 2030, 2035, 2040, and 2045. <br />These updated values represent the projected water supply available for the City after <br />decommission of the groundwater wells. <br />Page 3.15-36, First Paragraph <br />In response to ZONE 7-5, the following paragraph has been revised:
The URL can be used to link to this page
Your browser does not support the video tag.