COFFEE SHOPS IMPACT ON THE WATER RENEWAL SYSTEM By: Zach Conde, City of Boise Pretreatment Program
AREA OF IMPACT Population • • 223K in the City of Boise 25K In the City of Eagle • 12K In the City of Garden City • Total of 265K in our area • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 2
PUBLICLY OWNED TREATMENT WORKS (POTW) 900 + miles of pipe within the City • West Boise Water Renewal Facility • West Boise • Current design flow is 24 million gallons per day (MGD) Lander • Typical flow is 17 MGD Lander Street WRF • • Design flow is 17 MGD • Typical flow is 11 MGD Current total system design flow • • ~40 MGD • Typical flow is 28 MGD Biological plants…FOG impacts • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 3
PRETREATMENT PROGRAM TODAY LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 4
ORG CHART LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 5
INTERJURISDICTIONAL AGREEMENTS EAGLE LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 6
SIGNIFICANT INDUSTRIAL USERS 17 total SIUs in jurisdictional area • • 15 in Boise • 1 in Garden City • 1 in West Boise Sewer District • 0 in Eagle Sewer District LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 7
MINOR INDUSTRIAL USERS Restaurants • Breweries • Auto Shops • Machine Shops • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 8
DENTAL PRACTICES LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 9
STORMWATER Hotline Complaints, Airport MS4, High Risk Industrial, Routine Inspections LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 10
OTHER TASKS ...COFFEE SHOP STUDY LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 11
COFFEE SHOPS Prior to 2015 no grease abatement required for stand alone coffee shops • Why would they need grease abatement? It’s JUST COFFEE!! • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 12
DOWNSTREAM ACCUMULATIONS In 2015, our crews & other local districts staff started routinely finding fats, oil and grease accumulations in City main sewer lines LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 13
OTHER MUNICIPALITIES… KENNEWICK , WA LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 14
FACTORS We know other municipalities have required all coffee shops to install grease • abatement We know our UM crew, and other local districts are finding FOG • Maybe they do need grease abatement • Need data to back up need for grease abatement before starting to require • it LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 15
COFFEE SHOP STUDY We decided to collect our own data to find out if coffee shops do have an impact on our water renewal system LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 16
COFFEE SHOPS 99 total stand alone coffee shops • 82 in Boise • 9 in Garden City • 8 in Eagle • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 17
7 COFFEE SHOPS WERE CHOSEN Garden West Eagle Boise City Boise CS#1 CS#3 CS#6 CS#5 CS#2 CS#4 CS#7 LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 18
QUALIFYING SHOPS Only shops with existing exterior grease interceptors (1500 gallons) LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 19
DATA COLLECTED March – August 2017, monthly inspections • • Checked grease interceptor for loadings, monitor accumulations • Obtained cleaning records to ensure adequate cleaning schedule • Discussed various BMP questions, drinks per day, hours of operation, etc. LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 20
F.O.G. IN PRIMARY CHAMBER CS#1 CS#2 CS#3 CS#4 CS#5 CS#6 CS#7 40 35 30 Inches Needs Cleaned 25 20 15 10 5 0 March April May June July August LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 21
DRINKS PER DAY 1200 1000 Drinks per Day 800 600 400 200 0 CS#1 CS#2 CS#3 CS#4 CS#5 CS#6 CS#7 LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 22
AVERAGE GALLONS DOWN DRAIN PER DAY 9 8 7 6 Gallons 5 4 3 2 1 0 CS#1 CS#2 CS#3 CS#4 CS#5 CS#6 CS#7 LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 23
ANNUAL CLEANING FREQUENCY 7 6 Cleanings per Year 5 4 3 2 1 0 CS#1 CS#2 CS#3 CS#4 CS#5 CS#6 CS#7 LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 24
HIGHEST VOLUME OF FOG DISCHARGE CS#4 CS#6 CS#7 1000 drinks per day 800 drinks per day 1000 drinks per day 5 gallons down per day 7.8 gallons down per day 3 gallons down per day Clean GI 6x annually Clean GI 2x annually Clean GI 2x annually LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 25
COFFEE SHOP STUDY RESULTS All facilities have accumulations of FOG in grease interceptors • Highest output facility loads a 1500 gallon grease interceptor in 2 months • They do have an impact! • Variable loadings… • Many factors could lead to the variability…BMPs …connections to GI…# of • drinks served…etc. LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 26
NEXT STEPS Now that we know Coffee Shop FOG exists, and has potential to impact the • water renewal system, what is next? More information is needed! • LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 27
AREA WIDE SURVEY LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 28
COFFEE SHOP SURVEY LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 29
CONTACT INFORMATION LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 30
#1 & #2 - SPECIALTY COFFEE DRINKS 1. Does your facility make specialty coffee drinks? (If no, skip questions #2 - #15, sign, date, and submit. If yes, continue to question #2.) 2. How many specialty coffee drinks does your facility make on average per day? LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 31
QUALIFYING COFFEE SHOPS Yes No • • • Make coffee drinks other than drip • Cook food on site coffee • Only make drip coffee • Espresso drinks, milk coffee drinks, creamer coffee drinks, blended coffee drinks, etc. LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 32
#3 & #4 – GREASE ABATEMENT 3. Does your facility have grease abatement equipment installed (grease trap, grease interceptor, electro-mechanical device, etc.)? (If no, skip questions #4-#10. If yes, continue to question #4.) 4. What type of grease abatement equipment do you have (please include type, capacity, location, etc.)? LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 33
GREASE ABATEMENT - GREASE INTERCEPTOR LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 34
GREASE ABATEMENT – GREASE TRAP LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 35
GREASE ABATEMENT – ELECTRO-MECH. DEVICE LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 36
#5 & #6 – CLEANING PRACTICE 5. Is your grease abatement 6. If contracted out, who is the equipment cleaned in house or contractor? contracted out? LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 37
#7, #8 & #9 – CLEANING FREQUENCY 7. How frequently is your grease abatement equipment cleaned? 8. What date was your grease abatement equipment last cleaned? 9. Do you keep a record of all grease abatement equipment cleanings? (If yes, please attach a copy of your cleaning log and/or record of recent cleanings.) LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 38
RECORD KEEPING LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 39
#10 – FIXTURES CONNECTED 10. Please list all fixtures that are connected to your grease abatement equipment (sinks, sprayers, floor drains, floor sink, mop sinks, etc.). LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 40
#11 & #12 – RINSE SPRAYER 11. Does your facility utilize a rinse sprayer to clean specialty coffee drink making equipment (blenders, frothing pitchers, cups, etc.)? 12. If yes, how many sprayers does your facility utilize? LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 41
#13 & #14 – “DUMP” POLICIES 13. Please explain your facility’s policy to “dump” milk, creamers, coffee drinks, etc. down the drain after a certain period? 14. What quantity (gallons) of milk, creamers, bad coffee drinks, etc. are poured down the drain on average per day? LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 42
#15 – OTHER BEST MANAGEMENT PRACTICES 15. Please list and explain any other best management practices your facility has implemented to avoid discharges of fats, oil, and grease down the drain. (If more space is needed, please attach on separate sheet of paper.) LASTING ENVIRONMENTS | INNOVATIVE ENTERPRISES | VIBRANT COMMUNITIES 43
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