California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1


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	California Integrated Water Quality System Project (CIWQS)

Facility At-A-Glance Report

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Place ID 630921

General Information
Region	Place ID	Place Name	Place Type	Place Address	Place County
2	630921	Los Altos Hills CS	Collection_System	26379 Fremont Los Altos Hills, CA, 94022	Santa Clara

Related Parties

Party	Party Type	Party Name	Role	Classification	Relationship Start Date	Relationship End Date
653550	Person	James Conroy	Is Onsite Manager For		01/15/2026
653550	Person	James Conroy	Is A Data Submitter For		12/17/2025
636347	Person	Astha Khanal	Is A Data Submitter For		12/16/2025
636390	Person	Melissa Elian-Carrillo	Is A Data Submitter For		12/16/2025
540287	Person	Woojae Kim	Is A Data Submitter For		06/09/2023
636347	Person	Astha Khanal	Is Onsite Manager For		12/02/2022	12/15/2025
636390	Person	Melissa Elian-Carrillo	Is A Data Submitter For		12/01/2022	12/15/2025
549182	Person	Oscar Antillon	Is Onsite Manager For		12/01/2021	05/23/2023
629330	Person	Daniel Liang	Is Onsite Manager For		11/29/2021
626595	Person	Brian Pambuan	Is A Data Submitter For		08/02/2021	05/18/2023
544373	Person	Jen Chen	Is Onsite Manager For		04/26/2021	05/23/2023
602462	Person	Janelle Lee	Is Onsite Manager For		03/26/2021	04/16/2021
623065	Person	Christine Hoffmann	Is A Data Submitter For		03/26/2021	11/23/2021
602462	Person	Janelle Lee	Is A Data Submitter For		09/23/2019	03/26/2021
551316	Person	Kaho Kong	Is Onsite Manager For		04/05/2019	05/23/2023
457736	Person	Nichol Bowersox	Is Onsite Manager For		08/10/2018	05/23/2023
560499	Person	Allen E Chen	Is Onsite Manager For		11/28/2016	05/23/2023
544373	Person	Jen Chen	Is A Data Submitter For		08/25/2016	04/25/2021
548300	Person	Tina Tseng	Is Onsite Manager For		10/01/2014	10/13/2017
544169	Person	John T. Chau	Is Onsite Manager For		12/02/2013	05/23/2023
540287	Person	Woojae Kim	Is Onsite Manager For		05/31/2013	01/07/2015
536875	Person	Richard Chiu	Is Onsite Manager For		09/27/2012	10/03/2016
536862	Person	Michelle Chen	Is Onsite Manager For		09/19/2012	11/07/2013
389111	Person	Johnson Chung	Is A Data Submitter For		07/17/2007	09/19/2012
358155	Person	Richard Chen	Is Onsite Manager For		06/04/2007	08/31/2007
100522	Person	Dave Ross	Is Onsite Manager For		04/03/2006	08/31/2007
299489	Organization	Town of Los Altos Hills	Owner	City Agency	04/03/2006

Total Related Parties: 27

Regulatory Measures

Reg Measure ID	Reg Measure Type	Region	Program	Order No.	WDID	Effective Date	Expiration Date	Status	Amended?
299957	Enrollee	2	SSOMUNISML	2022-0103-DWQ	2SSO10149	11/02/2006		Active	N

Total Reg Measures: 1

Violations

Violation ID	Occurred Date	Violation Type	(-) Violation Description	Corrective Action	Status	Classification	Source
1152234	03/09/2026	SSOS	Type: Category 1 Spill; Debris from Construction caused 302 gallons of sewage to spill from Gravity Mainline,Manhole at 27947 Via Ventana Way, Los Altos Hills, CA 94022 to Drainage Conveyance System that discharges to surface water	Other (specify below). Spill seems to have been caused by clog from construction debris however pipe will be investigated.	Violation	A	SSO
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.

Total Violations: 1

Priority Violations: 0

*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.

Violation Types
SSOS = Sanitary Sewer Overflow/Spill/

Enforcement Actions

Enf Id	Enf Type	Enf Order No.	Effective Date	Status
388455	Notice of Violation	null	12/12/2012	Historical
362681	Oral Communication		03/21/2008	Historical
362625	13267 Letter		12/01/2004	Historical

Total Enf Actions: 3

Inspections

Inspection ID	Inspection Type	Lead Inspector	Actual End Date	Planned	Violations	Attachment
10640546	B Type compliance inspection	Michael Chee	10/10/2012	N	0	[Attachments]

Total Inspections: 1

Last Inspection: 10/10/2012

The current report was generated with data as of: 05/20/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.

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