Pretreatment and Plumbing Code Collaboration

“Can’t We All Just Get Along?”

Dan Parnell

Permitting Section ManagerBureau of Environmental Services

April 18, 2016

Environmental Services   l    Presentation Title 2

Overview

• Pretreatment/FOG Program Goals• Plumbing Code Goals• Collaborating• Loading Factors

Environmental Services   l    Presentation Title 3

Common Goals ‐ Protection

• Protect public and sewer worker health

Sewer Use Ordinance

• Minimize public riskPlumbing 

Code

Environmental Services   l    Presentation Title 4

Achieving Pretreatment/FOG Program Goals

…pollutants which cause obstruction…

Prohibited discharges:

Environmental Services   l    Presentation Title 5

Achieving Pretreatment/FOG Programs Goals

• How goals are achieved:

…require dischargers to install treatment facilities…

Environmental Services   l    Presentation Title 6

Achieving Pretreatment/FOG Programs Goals• Install treatment facilities:

Adequate pollutant removals require…• Treatment systems sized on

1.Flow rate2.Pollutant loadings

Environmental Services   l    Presentation Title 7

What Can Happen…

…if we don’t prevent prohibited discharges?

…the Fountain of Puke?

We get gratuitous FOG pictures, and…

Environmental Services   l    Presentation Title 8

What Can Happen…

And they say there’s no such thing as bad press…

…and that can lead to…

hieving Plumbing Code Goals

HGIDFUs 

correlate to GPMs

GGIDFUs 

correlate to GGI volume

gon Plumbing Specialty Code – Sized on Drainage Fixture Units (DFU)

How flow can you go?

hieving Plumbing Code Goalses the OSPC use loading factors in sizing GRDs?

n the OSPC be implemented to account for high dings?

w?

Chapter 1014.3.1 (HGI) CapacityChapter 1014.4.5&6 (GGI) Construction Requirements

No

Yes

OSPC has sections that speak to maintenance 

ample:

dwich Shop oor drains n prep arean sandwich aking area

for ice machine

op sinkod prep sink

Burger Joint Wok n Roll 2 Go3 Floor drains • 1 in prep area• 1 in grill area

• 1 for ice machine 

1 Mop sink1 Food prep sink

3 Floor drains • 1 in prep area• 1 in wok area

– 2 woks• 1 for ice machine 

1 Mop sink1 Food prep sink

ample:

Fixture r drainsp sinkd prep sink

Quantity311

ch restaurant has the same DFU count

233

*DFUs Total63312

rom table 7-3, OSPC.

Not all DFUs are created equally

Example:OSPC Grease Removal Device Outcomes:

2 U

35 GPMHolds ~15 gal. material

750 gallonsHolds ~ 185 gal. material

aka A Plumber’s dozen

* From tables 10-2 & 10-3 OSPC

Example:

ontractor proposes HGI Route for each restaurant

35 GPM~15 gal. material

dwich p?

er Joint?

n Roll?

OSPC Chapter 1014.3.1 (HGI)Sizing criteria …are based upon proper maintenance…

Can proper maintenance frequency be implemented?

llaborating

pporting data found e…

here is data to determine if GRD can be dequately maintained?

Collaborating

Building Officials

view proposed GRD

onsult with etreatment/FOG Staff

sure properly sized & stalled 

Pretreatment/FOG Programs

• Review type of restaurant & GRD proposal

• Proper maintenance frequency attainable?

• Advise on HGI or GGI route

ollaboration could work like this:

Based on FSE 

loadings potential

Collaborating

timum GRD Outcomes:

andwich Shop

urger Joint

ok n Roll

They will, they will wok you…

llaborating

Cities with  collaborative relationships

w Could a Plumbing Code Account for FOG Loadings?

umber of Meals

OG Production

erving Ware

Breakfast Lunch Dinner

Low Medium Heavy

Disposable Washable

des flow factors, include loading factors such as:

llaboration

Focus on commonalitiesStay engagedFocus on fixesMake sure to manager your end

Questions?

an Parnellan.parnell@portlandoregon.gov