overflow emergency response plan
TRANSCRIPT
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Overflow Emergency Response Plan (OERP)
OVERFLOW EMERGENCY
RESPONSE PLAN
May 2019
Plan Contents
Section A: Introduction and Purpose
Section B: Scope
Section C: Sanitary Sewer System Description
Section D: Available Resources
Section E: Responsibilities
Section F: Sewage Spill Response Procedures
Section G: EH&S Response
Section H: FS/RSSP/BGC Response
Section I: Sampling
Section J: Notification and Reporting Procedures
Section K: Public Health Notifications
Section L: Changes to the Emergency Response Plan
Note: Anything in a light green box outlines information that is specific to one of the three sewer collection systems that UC Berkeley manages:
UC Berkeley CS (UCB) – WDID: 2SSO10210
UC Berkeley – Berkeley Global Campus at Richmond Bay (BGC) – WDID: 2SSO10210
University Village Albany CS (UVA) – WDID: 2SSO10210
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Overflow Emergency Response Plan (OERP)
Section A: Introduction and Purpose
Sanitary sewers on the UC Berkeley campus and in the surrounding City of Berkeley, City of
Albany, City of Richmond, and Lawrence Berkeley National Laboratory can occasionally
overflow due to breaks or blockages in the sewer lines. These overflows can result in
discharges of raw sewage into surface water/storm drains and eventually into San Francisco
Bay. In order to protect public health and the environment from raw sewage and any chemicals
that may be contained in the sewage, a quick, coordinated response is needed to stop the
source of the overflow and to eliminate the downstream migration of sewage.
These procedures have been developed in conjunction with the City of Berkeley, City of Albany,
City of Richmond and the Regional Water Quality Control Board to provide instructions for
campus departments responsible for responding to sewage spills, in order to maximize the
effectiveness of the control and cleanup of sanitary sewer discharges.
These procedures are saved in electronic format on the EH&S server and are available on the
EH&S website at: ehs.berkeley.edu/ssmp.
Section B: Scope
These procedures apply to sanitary sewer spills that have been, or are threatened to be,
released from UC Berkeley’s three enrolled sanitary sewer systems (UC Berkeley CS, UC
Berkeley – Berkeley Global Campus at Richmond Bay CS, and University Village Albany CS).
These procedures apply to all sewage overflows caused by a failure of the sanitary sewer
system, which includes “any system of pipes, pump stations, sewer lines or other conveyances,
upstream of a wastewater treatment plant headworks used to collect and convey wastewater to
a publicly owned treatment facility” (WDR 2006-0003-DWQ). Laterals and mains located on UC
Berkeley property are all owned by UC Berkeley, unless otherwise specified in contractual
agreements. Procedures caused by a failure of a plumbing fixture are not included in this
response document. This document details procedures for response, spill cleanup, posting of
public health warnings and agency reporting.
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Overflow Emergency Response Plan (OERP)
Section C: Sanitary Sewer System Description
UC Berkeley CS
The UC Berkeley CS is comprised of a network of pipes, sumps, pumps and manholes. This
system dates back to the 1890’s and portions of the existing system may be over a century old.
UC Berkeley CS has ~ 0.7 miles of forced mains and other pressure systems and ~9.4 miles of
gravity sewers.
In addition, potential up-gradient sources of sewage spills include City of Berkeley residential
and commercial districts and the Lawrence Berkeley National Laboratory. The City of Berkeley
sewer system is also old, dating to the 1880’s, and deterioration of pipes is exacerbated by the
proximity of the Hayward Fault and associated ground movement.
UC Berkeley - Berkeley Global Campus (BGC) at Richmond Bay CS (formerly, Richmond
Field Station)
The Berkeley Global Campus at Richmond Bay is a satellite of the UC Berkeley campus, one of
the 10 University of California campuses governed by the Regents of the University of
California. The BGC sanitary sewer system connects with the City of Richmond sanitary sewer
system.
The Richmond Field Station portion of the BGC sewer system serves a population of 265.
There is approximately 1.8 miles of gravity sewers and 1.3 miles of laterals.
University Village Albany CS
The UVA sanitary sewer system connects with the City of Albany sanitary sewer system and
serves approximately 3,000 people. There is approximately 1.7 miles of gravity sewers and 1.5
miles of laterals. A majority of the sewer system piping was constructed between 1980 to
present. Belmont Village (a senior housing center), retail shop spaces and Sprouts Market are
considered Private Sewer Laterals, but are located on UC Berkeley property. These spaces
have contractual agreements to operate and maintain their sewer lateral.
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Overflow Emergency Response Plan (OERP)
SECTION D: AVAILABLE RESOURCES
Multiple departments are responsible for responding to sewage spills at UC Berkeley. Those
departments include: Office of Environment, Health and Safety (EH&S), Facilities Services
(FS), Residential Student Services Programs (RSSP) and Richmond Field Station Operations
(RFS Ops). All departments have personnel, materials, supplies and equipment to complete
some or all of the response. Outside contractors are available to aid in the repair of the sewer
system and cleanup of sewage.
The following is a list of available resources:
On-Campus Personnel Contact Information
Department Name Business Hours After Hours
EH&S (Environmental Protection and Urgent Response Support Program)
(510) 642-3073 (510) 642-6760
University of California Police Department (UCPD) (510) 642-6760 (510) 642-6760
Facilities Services (Plumbers and Laborers)
(510) 642-1032 (510) 642-1032
Residential Student Services Programs (510) 642-2828 (510) 642-2828
Richmond Field Station Operations (510) 665-3401 (510) 642-3333
Newmark Knight Frank (510) 548-5006 (510) 548-5006
Contract Assistance*
Type of Work Company Department Responsible for Contract
Response / Repair Roto-Rooter or equivalent FS / RSSP / RFS
Clean Up Various FS / RSSP / RFS
Sampling Cerco Analytical, Tetra Tech or EH&S (with McCampbell for the analytical results)
EH&S
* For phone numbers, see Attachment 1: Contractor Contact Information
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Overflow Emergency Response Plan (OERP)
Spill Response Equipment and Supplies
Spill response equipment and supplies are located in various places on UC Berkeley property.
In general:
EH&S equipment and supplies are located at the Hazardous Materials Facility (HMF)
and University Hall.
RSSP equipment and supplies are located at the University Village Albany Grounds
Yard and Clark Kerr Building 19 – Plumbing Shop.
FS equipment and supplies are located at 2000 Carleton Street and the Poultry Yard.
BGC equipment and supplies are located at the Berkeley Global Campus - Richmond
Field Station (Building 478, 197 and 117) and 1995 University Hall.
For a detailed inventory, see Attachment 2: Inventory
Personal Protective Equipment (PPE)
For information on PPE needed to respond to a sewage spill, see Sewer System Management
Plan – Appendix D - Resources. In addition, EH&S provides additional in-person training to
maintenance staff regarding environment, health and safety issues related to spills/sewage
including the types of proper PPE to use in various circumstances.
SECTION E: RESPONSIBILITIES
Following are departmental responsibilities for sewage spill response:
EH&S Responsibilities
Notify FS (510) 642-1032, RSSP (510) 642-2828 or RFS Ops (510) 665-3401 via the
Call Center with information about spill and response needs, if initial notification to EH&S
was not from either a FS, RSSP, or RFS Ops responder.
Report spill to appropriate regulatory agencies.
Post public health signs along affected areas, as needed.
Contact sampling contractors for water quality monitoring or clearance samples as
needed (see Attachment 3: Water Quality Monitoring Program Plan).
Collaborate with FS, RSSP or BGC responder to ensure SSO is responded to properly
and provide guidance to reduce environmental impacts.
Submit reports to Regional Board, State Board and other agencies as necessary.
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Overflow Emergency Response Plan (OERP)
FS / RSSP / BGC Responsibilities
Contact EH&S immediately when a sewage spill has been reported.
Mobilize resources to stop the source of the sanitary sewer discharge.
Contain the spill and barricade the area from public access.
Contact outside contractors if any additional resources are needed for repair or cleanup.
SECTION F: SEWAGE SPILL RESPONSE PROCEDURES
Detailed sewage spill response procedures for specific departments have been provided in
Section G: EH&S Response and Section H: FS/RSSP/BGC Response. However, if a large
event occurs that disrupts campus operations, procedures outlined in the UC Berkeley
Emergency Operations Plan (EOP) will be followed.
The following are general procedures for sewage spill response:
Upon notice or discovery of the sewage spill, notify the appropriate maintenance
department.
Contain the sewer overflow to the maximum extent possible by utilizing spill containment
devices (examples: sandbags, portable dikes, storm inlet covers, etc.) to keep spills
from entering the storm drain.
Determine the location and cause of the overflow. Assessment may include an
inspection of lift station pumps and downstream manholes.
Stop the SSO or stop the cause of the SSO.
Secure the affected area and post public health warning signs. Place barricades, cones,
and/or caution tape to secure the site from public access. (See Section K: Public
Health Notifications for triggers.)
Remove contaminated residual from storm pipes and attempt to recover all sewage from
the storm drain, if possible.
Clean and sanitize the affected area(s) and ensure that chlorinated cleanup water is not
discharged into the storm drain.
Notify the appropriate agencies.
Finalize the documentation for the incident by filling out the Sanitary Sewer Overflow
(SSO) Incident Reporting Form.
Review overall response with the responding parties.
Standard Operating Procedures for specific events can be found in Attachment 5: Standard
Operating Procedures.
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Overflow Emergency Response Plan (OERP)
Health and Safety Considerations
All employees have received spill clean-up training. All personnel responding to sewage spills
MUST be trained in the use of proper personal protective equipment and good hygiene
practices. Only employees with proper training will assist in the clean-up of sewage spills.
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Overflow Emergency Response Plan (OERP)
SECTION G: EH&S RESPONSE
Immediately following a report of a sewage spill, EH&S shall:
1. CALL FOR SPILL RESPONSE RESOURCES (if FS, RSSP or RFS hasn’t been notified
already):
Spill Location and Type Department Phone Number (Business Hours)
Phone Number (After Hours)
UC Berkeley CS Spill from an RSSP-owned/leased building Any other spill
Residential Student Services Programs (RSSP) Facilities Services (FS)
(510) 642-2828 (510) 642-1032
(510) 642-2828 (510) 642-1032
UC Berkeley - Berkeley Global Campus at Richmond Bay CS
Richmond Field Station (RFS Ops)
(510) 665-3401 (510) 642-3333
University Village Albany CS
Residential Student Services Programs (RSSP)
(510) 642-2828
(510) 642-2828
2. ASSESS THE SITUATION by coordinating with responders. If necessary, report to site if
conditions require EH&S assistance.
a. Document site conditions
b. Estimated quantity
c. Route of discharge (did it reach surface waters?)
3. CONTACT THE APPROPRIATE AGENCIES.
Trigger Timeline Name of Agency / Person Phone Number
SSO that is greater than or equal to 1,000 gallons discharged to surface water
As soon as possible, but not later than two hours
California Governor’s Office of Emergency Services (Cal OES)
(800)852-7550
As soon as possible, but not later than two hours
UCB: City of Berkeley Environmental Health Department
(510) 981-5310 (business hours) (510) 644-6620 (after hours – COB Public Works Dispatch)
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Overflow Emergency Response Plan (OERP)
BGC: City of Richmond UVA: City of Albany
Chad Davisson, General Manager at (510) 620-5486 (office) (510) 524-9543 (working hours)
SSO that enters downstream sewer agency’s jurisdiction
As soon as possible
UCB: City of Berkeley BGC: City of Richmond UVA: City of Albany
(510) 981-5310 (business hours) (510) 644-6620 (after hours – COB Public Works Dispatch) Chad Davisson, General Manager at (510) 620-5486 (office) (510) 524-9543 (working hours)
SSO that requires pumping surface water to the sanitary sewer
Prior to pumping to East Bay Municipal Utility District (EBMUD) or City of Richmond
UCB/UVA: EBMUD and Adam Kern, UCB EBMUD Representative BGC: City of Richmond
(510) 287-1651 (working hours) (510) 287-1458 (after hours) and (510)287-1622 (working hours) Chad Davisson, General Manager at (510) 620-5486 (office)
SSO that results in fish kill
As soon as possible
Department of Fish and Wildlife (DWF)
(707) 944-5500
SSO that involves hazardous materials
As soon as possible
UCB: City of Berkeley (COB) Toxics Management Division (TMD) UVA: City of Albany BGC: City of Richmond
(510) 981-7460 (business hours) (510) 644-6620 (after hours – COB Dispatch) (510) 524-9543 (working hours) Chad Davisson, General Manager at (510) 620-5486 (office)
4. If spill is entering surface water and triggers the need for water quality sampling:
a. Contact a SAMPLING CONTRACTOR to coordinate initial sampling (see
Attachment 3: Water Quality Monitoring Program Plan).
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Overflow Emergency Response Plan (OERP)
b. Post the creek with public health warnings as needed.
5. Fill out Sanitary Sewer Overflow (SSO) Incident Reporting Form.
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Overflow Emergency Response Plan (OERP)
SECTION H: FS / RSSP / BGC PLUMBER RESPONSE
Immediately following a report of a sewage spill, FS, RSSP, and BGC shall:
1. Contact EH&S during business hours at (510) 642-3073 or UCPD after hours at (510)
642-6760. UCPD will contact an EH&S after-hours responder.
2. Respond to the site and contain the spill. If possible, plumbers should divert the sewage
to an alternate manhole (downstream or another sewer line) by pumping to eliminate the
release to the storm drains or turn off the water supply to the discharging building.
3. Correct the plumbing problem. Once the spill is contained, plumbers should correct the
problem. If necessary, Roto-Rooter or other contractors should be called for assistance.
4. If there is likelihood for pedestrian traffic to have access to the site, barricade the area.
5. Fill out Sanitary Sewer Overflow (SSO) Incident Reporting Form for signature and
submittal to EH&S. The field reporting form should be submitted as soon as possible.
6. Coordinate clean up as needed.
SECTION I: SAMPLING
See Attachment 3: Water Quality Monitoring Program Plan for detailed instructions on
triggers for water quality monitoring.
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Overflow Emergency Response Plan (OERP)
SECTION J: NOTIFICATION AND REPORTING PROCEDURES
Reporting Procedures for the General Public
The general public should report sewage spills immediately to either:
Department Phone Number
Office of Environment, Health & Safety (510) 642-3073
UC Police Department (510) 642-6760
Reporting Procedures for Campus Employees
Campus employees should contact their appropriate maintenance department to handle
sanitary sewer overflows.
Department Phone Number
Facilities Services (FS) (510) 642-1032
Residential Student Services Programs (RSSP) (510) 642-2828
Richmond Field Station (RFS) (510) 665-3401
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Overflow Emergency Response Plan (OERP)
Reporting Procedures for EH&S
Reporting procedures vary depending on what spill category the SSO belongs to. The following
table defines the different categories of SSOs:
Category Name Definitions
Category 1 SSO Discharges of untreated or partially treated wastewater of any volume resulting from an enrollee’s sanitary sewer system failure or flow condition that:
Reach surface water and/or reach a drainage channel tributary to a surface water; or
Reach a Municipal Separate Storm Sewer System (MS4) and are not fully captured and returned to the sanitary sewer system or not otherwise captured and disposed of properly. Any volume of wastewater not recovered from the MS4 is considered to have reached surface water unless the storm drain system discharges to a dedicated storm water or groundwater infiltration basin.
Category 2 SSO Discharges of untreated or partially treated wastewater of 1,000 gallons or greater resulting from an enrollee’s sanitary sewer system failure or flow condition that do not reach surface water, a drainage channel or a MS4 unless the entire SSO discharged to the storm drain system is fully recovered and disposed of properly.
Category 3 SSO All other discharges of untreated or partially treated wastewater resulting from an enrollee’s sanitary sewer system failure or flow condition.
Private Lateral Discharges (PLSD)
Sewage discharges that are caused by blockages or other problems within laterals that are not operated or maintained by UC Berkeley.
See Sewer System Management Plan, Figure 2-2 Chain of Communication for SSOs in the
each site’s respective reporting procedures.
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Overflow Emergency Response Plan (OERP)
SECTION K: PUBLIC HEALTH NOTIFICATIONS
Authority to post and remove public health warnings
Authority to post and remove postings at UC Berkeley has been assigned to the Director of
EH&S. The Director has delegated the posting authority within EH&S when these procedures
are followed. In general, all posting is to be performed under the direction of EH&S.
Public health warnings can be removed upon the approval of the EH&S Director or delegated
EH&S staff member. If the SSO has migrated off UC Berkeley property, public health warning
signs must be coordinated with the consultation of the downstream agency, usually the
Environmental Health Department (example: for UC Berkeley CS - City of Berkeley’s
Environmental Health Division would be contacted).
Triggers for Posting
UC Berkeley Property
Barricades and warning signs should be posted whenever a sewage spill is detected or
suspected that may pose a public health concern. Public health postings should be
placed at visible locations where there is likelihood for the public to have access to the
contaminated area (which includes landscaped and paved areas).
Public health postings with high traffic (such as Lower Sproul paved areas, etc.) should
utilize multiple barricades such as cones in addition to caution tape. Traffic should be
redirected inside building structures so occupants do not come in contact with the
sewage as clean-up is occurring.
Posting is not necessary if a significant rainfall event occurs that adequately flushes the
contaminants from the site.
Non-UC Berkeley Property
In the event that sewage has been discharged off UC Berkeley property, the
downstream sewer agency must be contacted to coordinate posting. In general, the
downstream sewer collection system agency is responsible for posting, but the agency
may request assistance, in which case, UC Berkeley signs can be posted in locations
that they recommend.
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Overflow Emergency Response Plan (OERP)
Public Health Warning Statement and Placement
Stake Signage (for spills to the creek)
Following is the public health warning that may appear on signs posted along Strawberry
Creek on the UC Berkeley Central Campus. (Note: BGC and UVA may have similar
location-specific language.)
WARNING RAW SEWAGE IN WATER
AVOID CONTACT WITH CREEK WATER
This section of Strawberry Creek contains untreated sewage as a result of a sewer line failure. Do not drink or touch the water. Keep children and dogs away from the creek. The campus is
currently working on repairing the sewer.
For more information, contact the Office of Environment, Health & Safety at (510) 642-3073.
These warning signs should be placed in a conspicuous area on both sides of the creek,
in general, approximately every 100 feet. If necessary, caution tape should be strung
between signs, especially in areas where the chance of incidental contact with the creek
is greatest.
Other Signage
Laminated signage, such as the one below, can be posted in the area where there is
sewage spill contamination or where stakes aren’t feasible to use. Often times, a
barricade and caution tape may be sufficient to warn the public of the hazard if cleanup
is underway.
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Overflow Emergency Response Plan (OERP)
SECTION L: CHANGES TO THE OVERFLOW EMERGENCY RESPONSE PLAN (OERP)
DATE UPDATED
SECTIONS REVISED
NOTES AUTHOR OF CHANGE
CHANGE AUTHORIZED BY
9/2013 Title; Section B; Section I; Section J; Section L Added Section K, previously Section J Revised Attachment 1; Added new attachments 8 and 9 (placeholder)
Changed Title to include Central and East campus; Section B was revised to include new scope of procedures, previously did not include basements and landscaped areas; Section I was updated to include a placeholder for new scenarios; Section J renamed as Section K; Section K includes updated reporting procedures (MRP – effective 9/2013); Section J was added as placeholder for sampling protocols; Section L (previously Section K) was updated with City of Berkeley notifications Various agency names were changed (Cal EMA to Cal OES and Department of Fish and Game to Department of Fish and Wildlife). Attachment 1 was replaced with new MRP; Attachment 8 was added; Attachment 9 placeholder was added
Bernadette Dugtong, EH&S
Greg Haet, EH&S
12/2013 Added Estimating Spill Volumes guide; Attachment 3 and 5 removed; Re-numbered Sections;
Incorporated new Section for RSSP Plumbers; Worksheets for Estimating Spill Volumes (in progress); Removed Attachment 3 and incorporated information into Section L – Notification and Reporting Procedures; Revised Section L to incorporate new MRP requirements; Removed Attachment 5 due to similar information in Attachment 8
Bernadette Dugtong, EH&S
Greg Haet, EH&S
05/2014 Attachments; Section C
General Revisions
Minor revision to Attachment numbering
Removed previous Attachment 1 containing regulatory language, since it was duplicative of Appendix A
Section C
Revised Sewer System Descriptions for Richmond Field Station and University Village
Bernadette Dugtong, EH&S
Greg Haet, EH&S
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Overflow Emergency Response Plan (OERP)
DATE UPDATED
SECTIONS REVISED
NOTES AUTHOR OF CHANGE
CHANGE AUTHORIZED BY
09/2014 Section F
“Stop the source of the SSO” has been changed to “Stop the SSO or stop the cause of the SSO.
Section G
Trigger “SSO that exceeds 1,000 gallons to surface water” has been changed to “SSO that is greater than or equal to 1,000 gallons discharged to surface water.”
Section K
Added clarification regarding Environmental Health Department
Added posting is required for landscaped and paved areas with public access
Bernadette Dugtong, EH&S
Greg Haet, EH&S
12/2014 Attachment 6 Updated new Sanitary Sewer Overflow Incident Form
Bernadette Dugtong, EH&S
Greg Haet, EH&S
12/2015 All Revisions:
Global replace of “Richmond Field Station” to “Berkeley Global Campus at Richmond Bay”
Global replace of “Physical Plant-Campus Services” to “Facilities Services”
Global replace of “University Village Apartments” to “University Village Albany”
Global replace of “Richmond Field Station Operations” to “Berkeley Global Campus Operations”
Section B
Revised section to include: “Laterals and mains located on UC Berkeley property are all owned by UC Berkeley, unless otherwise specified in contractual agreements.” and removed sentence: “There are no private laterals in the collection systems.”
Section C
Updated Berkeley Global Campus sanitary sewer description to differentiate pipe
Bernadette Santos, EH&S
Greg Haet, EH&S
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Overflow Emergency Response Plan (OERP)
DATE UPDATED
SECTIONS REVISED
NOTES AUTHOR OF CHANGE
CHANGE AUTHORIZED BY
length between Richmond Field Station site and Regatta
Section
Updated EBMUD Representative from Deirdre Mena to Nadia Borisova
Section D
Change Sanitary Sewer Management Plan to Sewer System Management Plan
Attachment 7
Change Method #5 title from Open Channel Spill Estimation to Drop Bucket Method
Reformatted estimation spill volume procedures
Removed worksheets
2016 Sanitary Sewer Overflow Incident Form
Attachment 6: Updated Sanitary Sewer Overflow Incident Form format to match CIWQS database
Bernadette Santos, EH&S
Greg Haet, EH&S
05/2019 Various Title Page: Update date to “May 2019”
Global Replace: Change “Berkeley Global Campus Operations” to “Richmond Field Station Operations”
Section A: Removed “and/or laboratory wastewater”
Section B: Remove paragraph “Blockages in sewer pipes can occur when pipes become obstructed by tree roots infiltrating systems or by debris (such as debris from construction or domestic activities, or pieces of broken pipe). If the flow rate is sufficient, sewage can backup from the blockage and eventually escape the sewer system at an upstream low point, such as a manhole or floor drain.”, added details regarding UC Berkeley CS (sewer pipe lengths) and University Village Albany (Private sewer laterals).
Section D: Update Designated Spill Response Team to “Urgent
Bernadette Santos, EH&S
Greg Haet, EH&S
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Overflow Emergency Response Plan (OERP)
DATE UPDATED
SECTIONS REVISED
NOTES AUTHOR OF CHANGE
CHANGE AUTHORIZED BY
Response Support Program”; update tables to current contacts and equipment locations; minor grammatical change to sentence
Section G: Update EBMUD contact from “Nadia Borisova” to “Adam Kern”; revised number formatting; revised telephone number formatting
Section I: Slight correction to attachment title
Section J: Update PSLD definition as UC Berkeley now has PSLD’s within its sewer system. Previously, this category was not applicable.
Section K: Corrected text justification
Attachment 2: Updated EH&S vehicle names Attachment 3:
Water Quality Analyses – Protoco: Added McCampbell Analytical, Inc.
Update Plan to state that EH&S may collect the sample or call a sampling contractor.
Attachment 7:
Revised number formatting; revised title formatting
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Overflow Emergency Response Plan (OERP)
ATTACHMENTS
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 1: CONTRACTOR CONTACT INFORMATION
SAMPLING CONTRACTORS
CERCO Analytical, Inc.
Name of Contact
Emergency Contact Numbers
Office Cell Home
Darlene Langford (925) 462-2771 (925) 998-4412 (707) 745-6487
Cheryl McMillen (925) 462-2771 (925) 963-5201 (925) 439-0817
Michael McMillen (925) 462-2771 (925) 998-5917 (925) 439-0817
Ron Langford (925) 462-2771 (925) 998-7356 (707) 745-6487
Tetra Tech
Name of Contact
Emergency Contact Numbers
Office Cell Home
Jason Brodersen (510) 302-6300 (415) 497-9060 -
RESPONSE AND CLEAN UP CONTRACTORS
Company
Contact Information
Name Phone Number Email
Roto-Rooter (Plumbing / Restoration & Cleaning)
Martin Alvarez (925) 443-5454 [email protected]
ATI (Restoration and Cleanup)
Dan Ward (717) 283-9990 [email protected]
NRC Environmental (Restoration and
Cleanup)
-- (510) 749-1390 [email protected]
Berkeley Plumbing and Heating (Plumbing)
Stephen Wind (510) 715-3861 [email protected]
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 2: INVENTORY
EH&S Spill Response Equipment
EH&S Spill Response Equipment is located at the Hazardous Materials Facility (HMF),
University Hall and Sandbag Staging Area. Vehicles are available at the University Hall -
Parking Well. Keys are kept in 317 University Hall.
Type of Equipment Quantity (approx.) Location
Booms / Spill Socks 4 coils HMF
Wet/Dry Vacuum 1 HMF
Various Storage Buckets and Drums Unlimited HMF
Various PPE Unlimited HMF / University Hall
Barricades and Warning Tape Supply low, On order HMF Outside Storage Room
Dechlorination Tablets 1 5-gallon bucket HMF Outside Storage Room
Hose 1 HMF Outside Storage Room
Push Broom 1 HMF Outside Storage Room
Sewage Notices (steel signs/stakes) 35 HMF Outside Storage Room
Skimmer 4 HMF Outside Storage Room
Stakes 10 HMF Outside Storage Room
Trash Grabber 1 HMF Outside Storage Room
Sandbags 24 Sandbag Staging Area (north of Haas Pavillion)
Thermometer 1 University Hall
Surveyor’s Wheel On order On order
Vehicles
EHS-Vehicle-CMAX #9919 (Van) 1 University Hall - Parking Well
EHS-Vehicle-VAN-9992 1 University Hall - Parking Well
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Overflow Emergency Response Plan (OERP)
EH&S Equipment Locations
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Overflow Emergency Response Plan (OERP)
FS Spill Response Equipment
FS Spill Response Equipment is located at 2000 Carleton Street, Poultry Yard and Edwards
Track. Vehicles are available at 2000 Carleton Street.
Type of Equipment Quantity (approx.) Location
Dechlorination Tablets Multiple Various
Closed-circuit television (CCTV) cameras (80 ft)
1 2000 Carleton Street
Gasoline Pumps 2 Poultry Yard
Electric and pneumatic pumps Multiple On FS Vehicles
Sandbags Multiple 2000 Carleton Street
Vactor Sweeper 1 Edwards Track
Portable Generators Multiple Poultry Yard
Vehicles
Trucks Multiple 2000 Carleton Street
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Overflow Emergency Response Plan (OERP)
RSSP Spill Response Equipment
RSSP Spill Response Equipment is located at: University Village Albany (UVA) Grounds
Yard and Clark Kerr (CK) Building 9 Plumbing Shop.
Vehicles are available at Underhill Parking Lot.
Type of Equipment Quantity (approx.) Location
Closed-circuit television (CCTV) cameras (for laterals)
1 CK 9 Plumbing Shop
US Jetter 1 UVA Grounds Yard
Pumps Multiple CK 9 Plumbing Shop
Hoses Multiple CK 9 Plumbing Shop
Honda 500 Generator 1 CK 9 Plumbing Shop
Vehicles
Diesel Worktrucks 2 Underhill Parking Lot
Ford Van 1 Underhill Parking Lot
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Overflow Emergency Response Plan (OERP)
BGC Spill Response Equipment
BGC Spill Response Equipment is located at: Plumbing Shop.
Vehicles are available at Richmond Field Station.
Type of Equipment Quantity (approx.) Location
Small Submersible Pump 1 Bldg 478 - Room 301
Large Snake 1 Bldg 478 – Room 301
Small Snake 1 Bldg 478 – Room 301
Trash Pump 1 Bldg 197
Trash Pump hoses Multiple Bldg 197
Employee PPE (gloves, face protection, etc.)
Multiple Bldg 478 – Room 301
Repair Parts (conduit, couplings, etc.)
Multiple Bldg 478 – Room 301
Plungers Multiple In plumber’s caddy and custodial closets in each building
Vehicles
Dump Truck 1 Equipment Shelter at 197
Plumber’s Truck 1 Outside of Bldg 478
Plumber’s Caddy 1 Outside of Bldg 478
Hydro Trailer 1 Equipment Shelter Outside 117
Excavator 1 Equipment Shelter Outside 117
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 3: WATER QUALITY MONITIORING
PROGRAM PLAN
Plan Contents
Water Quality Monitoring – Key Elements
Water Sampling - Protocol
o Notification to Contractor
o Sampling Parameters
o Sampling Locations
o Sampling Procedure
o Results
o Conditions to Stop Monitoring
June 2013 Basin Plan
Water Analyses - Protocol
o Laboratory Analyses
o Maintenance and Calibration of Monitoring Instruments and Devices
Reporting Requirements
Note: Anything in a light green box outlines information that is specific to one of the three sewer collection systems that UC Berkeley manages:
UC Berkeley CS (UCB) – WDID: 2SSO10210
UC Berkeley – Berkeley Global Campus at Richmond Bay CS (BGC) – WDID: 2SSO10210
University Village Albany CS (UVA) – WDID: 2SSO10210
Water Quality Monitoring – Key Elements
Trigger for Sampling. Water quality sampling must be performed for sanitary sewer overflows
(SSOs) that are 50,000 gallons or greater and reach surface water. In addition, water quality
sampling will be performed for SSOs under 50,000 gallons to assess the impacts to surface water
when the spill shows an observable influence (example: odors, discoloration, steam, etc.) and
the spill remains on UC Berkeley property for the 48-hour window for sampling after the SSO
notification.
o For 50,000+ gallons: In the case where the source of the SSO has been stopped and the
entire SSO has migrated off UC Berkeley property, sampling must be coordinated with
the downstream agency.
o Less than 50,000 gallons: If a significant rainfall event (> 0.25 inches in 24 hours) has
flushed the creek with storm water adequately to remove all deposited sewage. No water
quality monitoring is needed.
Safety and Access. Water quality sampling should only be performed if it is safe to do so and
access to the surface water is not restricted. Unsafe conditions include, but are not limited to,
visibility, heavy wind or rains, slippery and/or steep riverbanks, etc. When sampling is not
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Overflow Emergency Response Plan (OERP)
possible, details of the situation will be recorded in the certified Category 1 SSO Report and the
SSO Technical Report (for spills above 50,000 gallons) submitted to the CIWQS Online SSO
Database.
Who Collects the Sample. EH&S will either collect sample or call a sampling contractor to
collect the sample.
When to Sample. Sampling must be performed (when and if it is safe to do so) within 48 hours
of UC Berkeley becoming aware of the SSO.
Where to Sample. Sampling should account for spill travel time in surface water (see Sample
Collection Procedure below).
Required Water Quality Analyses. Analyze for ammonia, dissolved oxygen, total and fecal
coliform, temperature, and pH. The bacterial indicators should be analyzed per the RWQCB
Basin Plan (see Sampling Parameters below).
Optional Follow-Up Monitoring. It may be appropriate to conduct additional monitoring by
sampling and/or visual inspection, depending on the original monitoring results. For example, if
an impact from the SSO is observed, follow-up monitoring could be conducted until the water
body has reverted to an estimated baseline condition. Follow-up monitoring will also be
conducted in communication with the downstream sanitary sewer agencies and the downstream
Environmental Health Divisions.
Water Quality Sampling – Protocol
Sampling Personnel
Once EH&S is notified of a sewage release to surface water, EH&S will either collect samples or
immediately notify either one of the contractors below to collect samples.
CERCO Analytical, Inc.
Name of Contact
Emergency Contact Numbers
Office Cell Home
Darlene Langford (925) 462-2771 (925) 998-4412 (707) 745-6487
Cheryl McMillen (925) 462-2771 (925) 963-5201 (925) 439-0817
Michael McMillen (925) 462-2771 (925) 998-5917 (925) 439-0817
Ron Langford (925) 462-2771 (925) 998-7356 (707) 745-6487
Tetra Tech
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Overflow Emergency Response Plan (OERP)
Name of Contact
Emergency Contact Numbers
Office Cell Home
Jason Brodersen (510) 302-6300 (415) 497-9060 -
Sampling Parameters
Ammonia
Total and Fecal Coliform
pH (field)
Temperature (field)
Dissolved Oxygen (field)
Sampling Locations:
“Upstream” of SSO
Immediate vicinity where SSO enters water body (“source”)
“Downstream” of SSO
Sample Collection Procedure:
Below is the recommended sample collection procedure that has been provided to our contractors. A
contractor may use an equivalent procedure to assess impacts to the creek as long as the minimum
number of samples is taken from the stated sampling locations and the required analyses are conducted.
Procedures may slightly diverge from this standard procedure if sampling locations are past UC Berkeley
property. The contractor is expected to submit their final procedure if it differs from the written procedure
below.
1. Obtain appropriate sampling equipment and containers.
2. Determine the point that the SSO entered waterway and photograph this location (include a
reference point in the photo). Note: EH&S will provide as much information about this
location prior to the contractor’s arrival.
3. If sampling is performed after the SSO has stopped, estimate the SSO travel time. This may
be done by observing or dropping floatable debris in the surface water and timing how long it
takes to travel over a measured distance (e.g., 100 feet). Include sections in the surface
water where there are bends, bottlenecks, or other characteristics that may slow down the
flow. If the first measurement is uncertain, this time estimate may be performed three to five
times, and the values average to determine the estimated travel time. The velocity in the
upper portion of the water body can then be calculated by dividing the measured distance by
the average time.
An alternative way to measure the SSO travel time is to use a velocity probe (such as a
Globe Water FP111-S Flow Probe) to determine the rate of flow in the water body.
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Overflow Emergency Response Plan (OERP)
4. Determine the “source” location for water quality sampling by accounting for SSO travel time.
a. If the SSO is occurring, the “source” location is the point where the SSO is entering
the waterway.
b. If the SSO has stopped, calculate the approximate downstream distance from the
original SSO location by dividing the time since the SSO occurred by the estimated
velocity. This is the approximate downstream distance from the SSO discharge point
to the “source” sampling location.
i. If this distance is beyond our property, EH&S will coordinate with the
downstream sanitary sewer agency for sampling.
▪ UCB: Contact City of Berkeley Environmental Health Department at (510) 981-5310 ▪ BGC: Contact City of Richmond – Municipal Sewer District, Chad Davisson, General Manager at (510) 620-5486 (office) or (510) 459-1175 (cell) ▪ UVA: Contact City of Albany Public Works at (510) 524-9543
Due to the possible tidal action in the surface water and other factors, another method may
be used to determine the “source” location at the discretion of the Legally Responsible
Official (LRO) or the Director of Environment, Health & Safety.
5. Put on safety gloves and safety glasses.
6. Upstream Sample Collection: Collect the upstream samples first. Move approximately one
hundred feet (100’) upstream of Source location. Label each of the sample bottles marked
“Upstream A”, “Upstream B”, and “Upstream C” with the date and time.
a. Take a photo of the sample location, including a reference point in the photo.
b. Fill the three labelled bottles against the direction of the water flow. Collect samples
well away from the bank, preferably at a point where water is visibly flowing. Avoid
sampling debris or scrum layer from the surface.
c. Use the thermometer to measure the temperature of the “Upstream C” sample three
times and record the results.
d. Place each sample in the cooler after collection.
Source Sample Collection: Collect the “source” samples next. Move approximately ten
feet (10’) downstream of the Source location. Label each one of the sample bottles marked
“Source A”, “Source B”, and “Source C” with the date and time.
a. Take a photo of the sample location, including a reference point in the photo.
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Overflow Emergency Response Plan (OERP)
b. Fill the three labeled bottles against the direction of the water flow. Collect samples
well away from the bank, preferably at a point where water is visibly flowing. Avoid
sampling debris or scum layer from the surface.
c. Use the thermometer to measure the temperature of the “Source C” sample three
times and record the results.
d. Place each sample in the cooler after collection.
Downstream Sample Collection: Lastly, collect the downstream sample. Move one hundred
feet (100’) downstream of the source location. Label each one of the sample bottles marked
“Downstream A”, “Downstream B”, and “Downstream C” with the date and time.
a. Take a photo of the sample location, including a reference point in the photo.
b. Fill the three labeled bottles against the direction of the water flow. Collect samples
well away from the bank, preferably at a point where water is visibly flowing. Avoid
sampling debris or scum layer from the surface.
c. Use the thermometer to measure the temperature of the “Downstream C” sample
three times and record the results.
d. Place each sample in the cooler after collection.
7. Record all sample information.
8. Transport the cooler containing the samples and the completed documentation to a
laboratory as soon as possible after the first sample collection. The parameter with the
shortest holding time is bacteria at 8 hours (from sample collection to beginning of analysis),
but sample analysis should begin as soon as possible after sample collection.
Conditions to Stop Monitoring
After the analyses have been performed (see “Water Quality Analyses Protocols” below) and the
results have been reviewed and finalized, consult with the appropriate Environmental Health
Division (either City of Richmond, City of Berkeley or City of Albany).
As soon the appropriate City’s Environmental Health Division (depending on where the SSO
occur) is satisfied with the results, monitoring for this SSO may stop. If Environmental health
Division is not satisfied, the contractor is to repeat the Sample Collection Procedure steps (or
equivalent) until the Environmental Health Division deems that it is not a risk to public health.
Water Quality Analyses – Protocol
Laboratory Analyses:
CERCO Analytical, Inc.
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Overflow Emergency Response Plan (OERP)
CERCO Analytical, Inc. is accredited by the Environmental Laboratory Accreditation Program (ELAP).
Their certification number is 2153. The methods will be performed as follows:
Parameter Standard Method
Ammonia SM 4500-NH3D
Dissolved Oxygen SM4500-O G
Temperature SM2550B
pH SM4500-H+B
Total Coliform Bacteria and Fecal Coliform SM 9221B & E
Tetra Tech
Tetra Tech will choose a laboratory from their current pool. Below is a list of their current laboratories
they contract with and their certification numbers.
Name of Laboratory Certification Number
Accutest Laboratories 8258
BioVir Laboratories 1795
McCampbell Analytical, Inc.
McCampbell Analytical, Inc. is accredited by the Environmental Laboratory Accreditation Program
(ELAP). Their certification number is 1644.
Parameter Standard Method
Ammonia SM 4500-NH3D
Dissolved Oxygen 360.1 / SM4500-O G
Total Coliform Bacteria and Fecal Coliform SM 9221B & E
Maintenance and Calibration of Monitoring Instruments and Devices:
All laboratory monitoring instruments and devices used for water quality analyses are maintained and
calibrated by the contractor.
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Overflow Emergency Response Plan (OERP)
Reporting Requirements
The EH&S Environmental Specialist is responsible for submitting water quality monitoring information with
the certified Category 1 SSO report in the CIWQS Online SSO Database, which must be submitted within
15 calendar days of the SSO end date.
The EH&S Environmental Specialist is responsible for submitting information related to the Technical
Report (for spills 50,000 gallons or greater) in the CIWQS Online SSO Database, which must be done
within 45 calendar days of the SSO end date. The SSO Technical Report must include the following
water quality monitoring information:
Description of all water quality sampling activities conducted
Analytical results and evaluation of the results
Detailed location map showing all water quality sampling points
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 4: LESSONS LEARNED: SEWAGE SPILL
RESPONSE
In the 1980s, the campus and City of Berkeley response to sewage spills was primarily one of stopping it
at the source. Sewage was allowed to drain down the creek and decay over time or be washed away by
rains. In the early 1990s, agencies such as the Department of Fish and Game began to require that
sewage released to the creek be pumped out of the creek back into sanitary sewers downstream of the
blockage. Pumping of the creek is performed by damming the creek with sandbags in a location in
proximity to the sanitary sewer and pumping the sewage and creek water into the sanitary sewer.
Pumping continues until the sewage leak is repaired and most of the sewage pumped from the creek.
While normal dry weather flows are low enough to allow pumping the creek using pumper trucks or
portable gas powered “trash” pumps, contractor response time was historically poor. It would often take 4
to 6 hours for contractors to arrive with trucks and set up before pumping began, and by that time a
significant portion of sewage flowed out of campus and into the City and the Bay.
Because of the slow response time, in 1999 EH&S purchased three Multiquip 3” x 3” centrifugal pumps
with 5.0 H.P. Honda GX-140 engines (77 lbs. dry weight) and a quick cleaning capacity for sewage
response. With two engines stored in a secure centrally located room allowing for quick access to the
creek and one kept on a Facilities Services truck, response time between sewage spill discover and creek
pumping has been shortened from many hours to 30 minutes to an hour.
SEWAGE SPILL RESPONSE PUMPING CALCULATIONS The Multiquip centrifugal pumps have a maximum capacity of 16,000 gallons per hour (GPH, ~260 GPM), maximum lift of 25 ft and maximum head of 105 ft. In general, the pumps are expected to operate at less than maximum capacity, in part due to the need to lift the water from creek pools 10-15 feet to the sanitary sewer. Assuming 200 GPM operating conditions, all three pumps would be required to divert flow from the central campus sanitary sewer draining to side sewer #1 (SS#1, MH#384) when that sewer is running at maximum capacity of around 500 GPM and the North Fork is contributing typical dry weather flow of around 50-100 GPM.
[Daily sewer discharge from campus is 785,000 (Source: 2002 EBMUD UC Berkeley Wastewater Discharge Permit.). Assume 75% drains to SS#1 and 25% to other side sewers. SS#1 daily average flow is = 400 GPM with diurnal fluctuations and peak flows in the early afternoon (assume 500 GPM maximum). North Fork dry weather flow = 50–100 GPM. South Fork dry weather flow = 125-200 GPM. (Quick conversion CFS x 448.8 = GPM)]. This would be a worst-case scenario. However, usually two centrifugal pumps are needed, and in some cases these have been supplemented by use of plumber’s sump pumps, which are especially useful in providing a pump around to divert clean upstream water around the impacted area.
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 5: STANDARD OPERATING PROCEDURES
(SOPs)
Creek Pumping Procedure
Scenario: Sewage overflow has entered surface water such as Strawberry Creek. Procedure is
applicable in both dry weather and wet weather circumstances.
Method A: Divert creek water around the spill Method B: Divert creek water AND sewage
Applicability: If response time is quick enough to capture the leading edge of spill. Otherwise, go to Method B. Equipment Needed:
Trash Pump
Sandbags (for dam structure) Notifications Needed:
EBMUD approval needed prior to pumping creek water into the sanitary sewer – (510) 287-1651
Procedure:
1. Place a dam immediately downstream of the sewage spill. Using a trash pump, begin pumping the sewage to an adjacent sanitary sewer, downstream of the failure.
2. Place a dam immediately upstream of the affected area and, using another trash pump, pump creek water to below the dam placed in Step 1.
Applicability: In cases where you cannot capture the leading edge of a spill. Equipment Needed:
Trash Pump
Sandbags (for dam structure) Notifications Needed:
EBMUD approval needed prior to pumping creek water into the sanitary sewer – (510) 287-1651
Procedure:
1. Place a downstream dam. 2. Use a trash pump to pump the
contaminated water to the sanitary sewer. (Pumping should continue until clean water is flowing.)
3. If a layer of solids has been deposited on the creek bed, it will need to be flushed with dechlorinated water. All wash water should be pumped to the sanitary sewer.
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ATTACHMENT 6: SANITARY SEWER OVERFLOW (SSO)
INCIDENT REPORTING FORM
(See form on next page)
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Office of Environment, Health and Safety (EH&S) - Sanitary Sewer Overflow Incident Form (rev. 07/2016)
1
STEP 1 Immediately call EH&S at (510) 642-3073 with the following details of the incident:
Name of First Responder
Phone Number of First Responder
Location of Spill
Is the spill potentially greater than 1,000 gallons? Yes No
Does the spill have the potential to reach a storm drain, catch basin or the creek?
Yes No
STEP 2 Note your arrival time at the scene (be exact!)
Date and Time of Arrival Date: Time:
STEP 3 Contain and clean up the overflow. Notify parties if additional assistance is needed.
STEP 4 Record the spill end date and time.
Spill End Date and Time Date: Time:
STEP 5 Fill in the rest of the form and return to EH&S before the end of your shift via one of the following methods:
Drop off Hard Copy Fax Email 317 University Hall #1150 (510) 643-7595 [email protected]
Spill Volumes Recovered Spill Volumes
Estimated spill volume that reached a separate storm drain that flows to a surface water body
gallons
Estimated spill volume recovered from the separate storm drain that flows to the surface water body (do not include water used for cleanup)
gallons
Estimated spill volume that reached a drainage channel that flows to a surface water body
gallons
Estimated spill volume recovered from a drainage channel that flows to a surface water body
gallons
Estimated spill volume discharged directly to a surface water body
gallons Estimated spill volume recovered from surface water body
gallons
Estimated spill volume discharged to land (includes inside of buildings) gallons
Estimated spill volume recovered from the discharge to land (do not include water used for cleanup)
gallons
Estimation Methodology for Spill Volume Estimation Methodology for Recovered Spill Volume:
Eyeball Estimate Method Measured Volume Method Duration and Flow Rate Method Other (explain):
Eyeball Estimate Method Measured Volume Method Other (explain):
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Office of Environment, Health and Safety (EH&S) - Sanitary Sewer Overflow Incident Form (rev. 07/2016)
2
SPILL VOLUME ESTIMATION WORKSHEET
ALL SPILLS Name of Estimator: Picture taken? Yes No
Dimensions of spill (in ft. or paces): Length _________ Width _________ Depth _________
Additional Notes and Documentation:
METHOD 1: EYEBALL ESTIMATE METHOD AND KICK THE BUCKET Imagine amount of water that would spill from a bucket or a barrel. This method is only useful for spills up to 100 gallons.
Size of bucket(s) or barrel(s)
How many of this
Multiplier Total Volume
Estimated
Size of bucket(s) or barrel(s)
How many of this
Multiplier Total Volume
Estimated
1 gal water jug x 1 1 gal water jug x 1
5 gallon bucket x 5 5 gallon bucket x 5
32 gallon trash can x 32 32 gallon trash can x 32
55 gallon drum x 55 55 gallon drum x 55
Total Volume of Spill Total Volume Recovered
METHOD 2: ESTIMATING VOLUME BASED ON SPILL DIMENSIONS If not raining, the shape, dimensions and depth of the spill may be used to estimate the volume.
Rectangle: Area = (length) x (width) Sketch spill with dimensions and calculate average depth.
Circle: Area = (diameter) x (diameter) x 0.785
Triangle: Area = (base) x (height) x 0.5
Multiply (area) x (depth) to get volume
Multiple (volume) x (7.5) to convert to gallons
METHOD 3: DURATION AND FLOW RATE
Start Date and Time Line 1
End Date and Time Line 2
Total time elapsed of overflow (Subtract line 1 form line 2. Show time in minutes)
Line 3
Average flow rate GPM Line 4
Total volume estimated (multiply line 3 and line 4) Line 5
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Office of Environment, Health and Safety (EH&S) - Sanitary Sewer Overflow Incident Form (rev. 07/2016)
3
SPILL DETAILS
Spill Appearance Point (Select all that apply.)
Forced Main Gravity Mainline Inside Building or Structure Lateral Clean Out
Lateral Manhole Pump Station Other (specify):
Final Spill Destination (Select all that apply.)
Building or Structure Drainage Channel Paved Surface Storm Drain
Street/Curb and Gutter Surface Water Unpaved Surface Other (specify):
Estimated Spill Start Date/Time Date: Time:
Spill Cause Air Relief Valve (ARV) / Blow-Off Valve (BOV) Failure Construction Diversion Failure UCB Staff Caused Spill or Damage Damage by Other Not Related to UCB Construction / Maintenance (specify): Debris from Construction Debris from Lateral Debris – General Debris – Rags Flow Exceeded Capacity Grease Deposition (FOG) Inappropriate Discharge to System
Natural Disaster Non-Dispersables Operator Error Pipe Structural Problem / Failure Pipe Structural Problem / Failure – Installation Pump Station Failure – Controls Pump Station Failure – Mechanical Pump Station Failure – Power Rainfall Exceeded Design Root Intrusion Siphon Failure Vandalism Other (specify below)
Explanation of Where Failure Occurred
Was Spill Cause determined by a CCTV inspection?
Yes No
Where did the failure occur? Air Relief Valve (ARV) / Blow-Off Valve (BOV) Force Main Gravity Mainline Lateral Manhole
Pump Station - Controls Pump Station – Mechanical Pump Station – Power Siphon Other (specify):
Spill Response Activities Cleaned up Mitigated Effects of Spill Contained all or portion of spill Restored flow Returned all spill to sanitary sewer system
Returned portion of spill to sanitary sewer system Property Owner/Building Occupants Notified Other enforcement agency notified
Spill Response Completion Date and Time
Date: Time:
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Office of Environment, Health and Safety (EH&S) - Sanitary Sewer Overflow Incident Form (rev. 07/2016)
4
Spill Corrective Action Taken Added sewer to preventative maintenance program Adjusted schedule/method of preventative maintenance Enforcement action against source Inspected sewer using CCTV to determine cause
Plan rehabilitation or replacement of sewer Repaired facilities or replaced defect Other (specify):
Is there an on-going investigation? Yes No
Reason for on-going investigation
Name of impacted surface waters Strawberry Creek Meeker Slough Codornices Creek
Not applicable – no impacted surface water Other (specify):
Was spill associated with a storm event?
Yes No
RESPONSE CREW (List all names along with their department or company)
CALL CENTER INFORMATION
Date and Time UC Berkeley operations/maintenance staff or EH&S was first notified of or discovered spill
Date: Time:
Complainant Information
Name: Phone:
Attach any work orders if available to the Incident Form.
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Office of Environment, Health and Safety (EH&S) - Sanitary Sewer Overflow Incident Form (rev. 07/2016)
5
FOR THE OFFICE OF ENVIRONMENT, HEALTH & SAFETY (EH&S) STAFF USE ONLY:
Coordinates of Spill Latitude: Longitude:
Diameter of sewer pipe at point of blockage or failure (optional)
Material of sewer pipe at the point of blockage or failure (optional)
Estimated age of sewer asset at the point of blockage or failure (in years) (optional)
Visual inspection results from impacted receiving water
Health warnings posted
Water quality samples analyzed for Dissolved Oxygen Other chemical indicators (specify) Biological indicators (specify) No water quality samples taken
Explanation of water quality samples analyzed for
Water quality sample results reported to
County Health Agency Regional Water Quality Control Board Other (specify) No water quality samples taken Not applicable to this spill
Cal Office of Emergency Services Control Number (if applicable)
Cal Office of Emergency Services Called Date/Time (if applicable)
Date: Time:
INTERNAL STAFF REMINDERS
Category 1: Submit Draft report within 3 business days of becoming aware of the SSO and certify within 15 calendar days of SSO end date. Category 2: Submit Draft report within 3 business days of becoming aware of the SSO and certify within 15 days of SSO end date. Category 3: Submit certified report within 30 calendar days of the end of the month in which SSO occurred.
Draft Due:
Certification Due:
Create bCal event reminder for reporting Date Set:
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Overflow Emergency Response Plan (OERP)
ATTACHMENT 7: ESTIMATING SPILL VOLUMES
List of Methods
1. Eyeball Estimate and Kick Bucket Method
Best for small spills 100 gallons or less that can be visually approximated
2. Estimating Volume Based on Spill Dimensions
Larger spills that are no longer flowing and can be measured
3. Duration and Flow Rate
Good for large spills where dimensions cannot be measured, but the flow rate can be
calculated
4. Open Channel Spill Estimation
Good for large flowing spills where dimensions cannot be measured, but the flow rate
can be calculated
5. Drop Bucket Method
Best for small flowing spills where the entire flow can be captured in a bucket
6. Calculating Spill Volume Based on Pipe Size
Best for spills where pipe and flow information is known
7. Determine Spill Volume from Vent or Pick Holes
Best for spills originating from vent or pick holes in the ground / manhole
8. Determine the Volume of a Spill from Around the Rim of a Manhole Cover
Best for spills originating from a manhole with a cover
9. Determine the Volume of a Spill from a Manhole without a Cover
Best for spills originating from a manhole without a cover
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Overflow Emergency Response Plan (OERP)
Method #1: Eyeball Estimate and Kick Bucket Method
Reference: San Diego County, Sewer System Management Plan, June 2010
Eyeball Estimate
Imagine amount of water that would spill from a bucket (5 gallons) or barrel (50 gallons).
This method is only useful for spills up to 100 gallons.
Kick Bucket Method
Method can be used to estimate the volume of spills on asphalt, concrete, sloped surfaces and
flat surfaces
Photo #1: 1 Gallon Spill on a sloped surface (spill only)
Photo #2: 1 Gallon Spill on a sloped surface (spill with a point of reference)
Top Photo: 2 gallon (left) vs. 1 gallon (right) spill on a slope
Photo #4: 2 gallon spill on a very slight slope.
Photo #5: 5 gallon spill (40 feet in length)
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Overflow Emergency Response Plan (OERP)
Method #2: Estimating Volume Based on Spill Dimensions
Reference: San Diego County, Sewer System Management Plan, June 2010
If not raining, the shape, dimensions and depth of a spill may be used to estimate volume
o Sketch shape of spill
o Measure/pace off dimensions
o Measure depth in several locations; take average
o Convert all dimensions to feet
o Calculate area of spill based on approximate shape:
Rectangle: Area = length x width
Circle: Area = diameter x diameter x 0.785
Triangle: Area = base x height x 0.5
o Multiply area x depth to get volume
o Multiple volume x 7.5 to convert into gallons
Using a spill footprint to get surface area and sample sketch
Calculate average depth to get a depth measurement
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Overflow Emergency Response Plan (OERP)
Method #3: Duration and Flow Rate
Reference: San Diego County, Sewer System Management Plan, June 2010
If area/depth is impossible to measure, use duration and flow rate estimate
Duration: time elapsed from start to end of SSO
To estimate start time, use one of the following methods:
o Compare hourly data on a downstream flow meter to find changes in flow. Typically, the
daily flow peaks are flattened by the loss of flow.
o Observe conditions at the SSO site. Initially, there will be limited deposits of grease and
toilet paper. After a few days to a week, the grease forms a light colored residue. After a
few weeks to a month, the grease turns dark. In both cases, the quantity of toilet paper
and other materials of sewage origin increase in amount. These changes with time can
be used to estimate the start time in absence of other information.
To estimate end time, observe the “blow down” that occurs when blockage is removed or
observe “blow down” on flow meters.
Flow Rate: average flow left in sewer system during time SSO stopped, estimated using one of
the following three ways:
o Use data from flow meter to estimate flow rate for the spill (better for large SSOs).
o Estimate based on up-stream connections. Once the location of the SSO is known, the
number of upstream connections can be determined from system maps. Multiply the
number of connections by 200 to 250 gallons per day per connection, or 8 to 10 gallons
per hour per connection, or other flow rates that are consistent with the campus data for
its connections.
Example: (22 upstream connections) x (9 gallons per hour per connection) = 198
gallons per hour / 60 minutes per hour = 3.3 gallons per minute. Multiply the
gallons per minute times the number of minutes the spill occurred for the total
volume of the spill.
o Refer to the Reference Sheet for Estimating Sewer Spills to estimate flow rate based
on images from test scenarios.
Volume of SSO = duration (in hours or days) x flow rate (in gallons per hour or gallons per day)
ft3 = 7.48 gallons
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Overflow Emergency Response Plan (OERP)
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Overflow Emergency Response Plan (OERP)
Method #4: Open Channel Spill Estimation
Reference: Orange County Sanitation District
For ditches, channels, gutters, etc.
o Measure the cross sectional dimensions (to determine the area) of the channel and
determine the velocity of the flow
o Velocity can be measured by dropping a floating object into the flow and timing the object
over a measured distance
o Flow (Q), ft3/sec = Velocity (V), ft/sec x Area (A), ft2
o Flow times duration equals amount of spill
o Multiply by 7.48 (number of gallons in one cubic foot) to convert to gallons
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Overflow Emergency Response Plan (OERP)
Method #5: Drop Bucket Method
Reference: Orange County Sanitation District
Can be used for small spills where the entire flow stream can be captured in a bucket.
o Place bucket so that it captures the entire flow of stream and time how long it takes to fill
the bucket
o Dividing the volume of the bucket (in gallons) by the elapsed time to fill the bucket (in
minutes) equals the flow rate in gallons per minute (gpm).
Example If it takes 30 seconds to fill a 5-gallon bucket and the spill has occurred for 20 minutes, the total spill volume would be 200 gallons. 5 gallons / 0.5 minutes = 10 GPM x 20 minutes = 200 gallons
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Overflow Emergency Response Plan (OERP)
Method #6: Calculating Spill Volume Based on Pipe Size
Reference: Orange County Sanitation District
Volume of a spill can be measured using the flow rate in a pipe before and after the blockage is
clear.
o Need to know the size of the pipe
o Need a flow calculation chart
o Measure the depth of the flow downstream of the blockage
o Measure the depth of flow again after the blockage has been cleared and flow stabilized
o Use flow calculation chart to determine the flow rate of the pipe
Flow Depth Inches
8” Pipe 10” Pipe 12” Pipe 15” Pipe
1 20 GPM 25 GPM 30 GPM 35 GPM
2 60 70 80 85
3 110 125 135 150
4 160 180 200 235
5 190 240 280 315
6 260 310 355 415
7 290 370 425 495
8 320 430 500 600
9 465 575 690
10 490 625 775
11 685 870
12 715 935
13 1020
14 1070
15 1105
Note: The chart assumes V = 2.0 feet per second and n = 0.013
Step 1: Record the time that spill was reported.
Step 2: Record the flow, in inches, downstream of the spill or blockage. Record the pipe size in
inches. Determine flow rate in gallons per minute (GPM) using chart above.
Step 3: Re-establish flow and allow stabilizing. Record the time that flow stabilizes and the depth
of flow, in inches. Determine flow rate using chart above.
Step 4: Subtract the flow rate calculated in Step 2 from the flow rate calculated in Step 3.
Step 5: Multiply the result of Step 4 by the minutes elapsed from notification to stopping overflow.
Step 6: Report the total amount in gallons on the SSO Incident Reporting Form.
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Overflow Emergency Response Plan (OERP)
Example A spill was reported at 3:50 PM and was corrected at 6:25 PM on the same day. Calculate the volume of the spill for a 10 inch pipeline with 1 inch of downstream flow before correction and 5 inches of flow after correction and stabilization of flow. Time Reported: 3:50 PM Time Corrected: 6:25 PM Duration of Spill: 2:35 or 155 minutes Depth of Flow Before: 1 inch Depth of Flow After: 5 inches From Chart:
Flow After Stabilization: 240 GPM Flow Downstream Before: 25 GPM Net Flow = 240 – 25 = 215 GPM
SPILL VOLUME = (215 GPM) x (155 mins) = 33,325 gallons
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Overflow Emergency Response Plan (OERP)
Method #7: Determine Spill Volume from Vent or Pick Holes
Reference: Orange County Sanitation District
If spill is coming from vent or pick holes:
o Count the number of holes and measure the height of the water exiting from the holes
o Refer to the pick hole chart to determine the volume from each hole (below)
o Multiply the number of holes x time flow rate x time duration of the spill to determine spill
volume
Estimated Flows through Manhole Cover Vent Holes and Pick Holes for SSO Estimating
Hole Dia.
Inches
Area sq. ft.
Coeff. Of Vel.
Cv
Coeff. Of Cont.
Cc
C Cv x Cc
Water Ht inches
Water Ht inches
Water Ht feet
Q Cfs
Q Gpm
Q Gph
Vent Hole
0.50 0.00136 0.945 0.70 0.662 1/16 0.063 0.005 0.0005 0.23 14
0.50 0.00136 0.945 0.70 0.662 1/8 0.125 0.010 0.0007 0.33 20
0.50 0.00136 0.945 0.70 0.662 ¼ 0.250 0.021 0.0010 0.47 28
0.50 0.00136 0.945 0.70 0.662 ½ 0.500 0.042 0.0015 0.66 40
0.50 0.00136 0.945 0.70 0.662 ¾ 0.750 0.063 0.0018 0.81 49
0.50 0.00136 0.945 0.70 0.662 1 1.000 0.083 0.0021 0.94 56
Vent Hole
0.75 0.00307 0.955 0.67 0.640 1/16 0.063 0.005 0.0011 0.51 31
0.75 0.00307 0.955 0.67 0.640 1/8 0.125 0.010 0.0016 0.72 43
0.75 0.00307 0.955 0.67 0.640 ¼ 0.250 0.021 0.0023 1.02 61
0.75 0.00307 0.955 0.67 0.640 ½ 0.500 0.042 0.0032 1.44 87
0.75 0.00307 0.955 0.67 0.640 ¾ 0.750 0.063 0.0039 1.77 106
0.75 0.00307 0.955 0.67 0.640 1 1.000 0.083 0.0045 2.04 122
Vent Hole
1.00 0.00545 0.960 0.65 0.624 1/16 0.063 0.005 0.0020 0.88 53
1.00 0.00545 0.960 0.65 0.624 1/8 0.125 0.010 0.0028 1.25 75
1.00 0.00545 0.960 0.65 0.624 ¼ 0.250 0.021 0.0039 1.77 106
1.00 0.00545 0.960 0.65 0.624 ½ 0.500 0.042 0.0056 2.50 150
1.00 0.00545 0.960 0.65 0.624 ¾ 0.750 0.063 0.0068 3.06 184
1.00 0.00545 0.960 0.65 0.624 1 1.000 0.083 0.0079 3.54 212
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Overflow Emergency Response Plan (OERP)
Method #8: Determine the Volume of a Spill from Around the Rim of a Manhole
Reference: Orange County Sanitation District
If manhole cover is in place:
o Find the area of the gap (diameter of the cover from the diameter of the inside of the ring)
o Find the velocity (ft/sec) of the spill by measuring the height of the sewage plume
o Area times the velocity (ft/sec) times the duration of the spill times (448.8 for gpm/cfs)
equals the total spill volume in gallons
ESTIMATED SSO FLOW OUT OF A MANHOLE WITH COVER IN PLACE
24” COVER 36” COVER
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
In GPM
In MGD
In GPM
In MGD
¼ 1 0.001 ¼ 1 0.002
½ 3 0.004 ½ 4 0.006
¾ 6 0.008 ¾ 8 0.012
1 9 0.013 1 13 0.019
1 ¼ 12 0.018 1 ¼ 18 0.026
1 ½ 16 0.024 1 ½ 24 0.035
1 ¾ 21 0.030 1 ¾ 31 0.044
2 25 0.037 2 37 0.054
2 ¼ 31 0.045 2 ¼ 45 0.065
2 ½ 38 0.054 2 ½ 55 0.079
2 ¾ 45 0.065 2 ¾ 66 0.095
3 54 0.077 3 78 0.113
3 ¼ 64 0.092 3 ¼ 93 0.134
3 ½ 75 0.107 3 ½ 109 0.157
3 ¾ 87 0.125 3 ¾ 127 0.183
4 100 0.145 4 147 0.211
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Overflow Emergency Response Plan (OERP)
24” COVER 36” COVER
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
In GPM
In MGD
In GPM
In MGD
4 ¼ 115 0.166 4 ¼ 169 0.243
4 ½ 131 0.189 4 ½ 192 0.276
4 ¾ 148 0.214 4 ¾ 217 0.312 6”
5 166 0.240 5 243 0.350
5 ¼ 185 0.266 5 ¼ 270 0.389
5 ½ 204 0.294 5 ½ 299 0.430
5 ¾ 224 0.322 6” 5 ¾ 327 0.471
6 244 0.0352 6 357 0.514
6 ¼ 265 0.382 6 ¼ 387 0.558 8”
6 ½ 266 0.412 6 ½ 419 0.603
6 ¾ 308 0.444 6 ¾ 451 0.649
7 331 0.476 7 483 0.696
7 ¼ 354 0.509 7 ¼ 517 0.744
7 ½ 377 0.543 7 ½ 551 0.794
7 ¾ 401 0.578 8” 7 ¾ 587 0.845 10”
8 426 0.613 8 622 0.896
8 ¼ 451 0.649 8 ¼ 659 0.949
8 ½ 476 0.666 8 ½ 697 1.003
8 ¾ 502 0.723 8 ¾ 734 1.057
9 529 0.761 9 773 1.113
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Overflow Emergency Response Plan (OERP)
Method #9: Determine the Volume of a Spill from a Manhole without a Cover
Reference: Orange County Sanitation District
If manhole cover is not in place:
o Find the area of the manhole opening (area = R2)
o Find the velocity (ft/sec) of the spill by measuring the height of the sewage plume
o Area times the velocity (ft/sec) times the duration of the spill times (448.8 gpm/cfs) equals
the total spill volume in gallons.
ESTIMATED SSO FLOW OUT OF A MANHOLE WITH COVER REMOVED
24” FRAME 36” FRAME
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
In GPM
In MGD
In GPM
In MGD
1/8 28 0.04 1/8 49 0.07
¼ 62 0.09 ¼ 111 0.16
3/8 111 0.16 3/8 187 0.27 6”
½ 160 0.23 ½ 271 0.39
5/8 215 0.31 6” 5/8 361 0.52 8”
¾ 354 0.51 8” ¾ 458 0.66
7/8 569 0.82 10” 7/8 556 0.80 10”
1 799 1.15 12” 1 660 0.95 12”
1 1/8 1,035 1.49 1 1/8 1,035 1.49
1 ¼ 1,340 4.93 15” 1 ¼ 1,486 2.14 15”
1 3/8 1,660 2.39 1 3/8 1,951 2.81
1 ½ 1,986 2.86 1 ½ 2,424 3.49 18”
1 5/8 2,396 3.45 18” 1 5/8 2,903 4.18
1 ¾ 2,799 4.03 1 ¾ 3,382 4.87
1 7/8 3,132 4.51 1 7/8 3,917 5.64 21”
2 3,444 4.96 21” 2 4,458 6.42
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Overflow Emergency Response Plan (OERP)
24” FRAME 36” FRAME
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
Height of spout above
M/H rim H in inches
SSO FLOW
Q
Min Sewer Size in which these flows are possible
In GPM
In MGD
In GPM
In MGD
2 1/8 3,750 5.4 2 1/8 5,000 7.20 24”
2 ¼ 3,986 5.74 2 ¼ 5,556 8.00
2 3/8 4,215 6.07 2 3/8 6,118 8.81
2 ½ 4,437 6.39 2 ½ 6,764 9.74
2 5/8 4,569 6.58 24” 2 5/8 7,403 10.66
2 ¾ 4,687 6.75 2 ¾ 7,972 11.48 30”
2 7/8 4,799 6.91 2 7/8 8,521 12.27
3 4,910 7.07 3 9,062 13.05
3 1/8 9,604 13.83
3 ¼ 10,139 14.60
3 3/8 10,625 15.30 36”
3 ½ 11,097 15.98
3 5/8 11,569 16.66
3 ¾ 12,035 17.33
3 7/8 12,486 17.98
4 12,861 18.52
4 1/8 13,076 18.83
4 ¼ 13,285 19.13
4 3/8 13,486 19.42