Massachusetts Water Resources Authority

Marijuana Dispensaries in the MWRA District

Peter YarossiToxic Reduction and Control Department

MWRA

• Currently4licenseddispensariesintheMWRAdistrict

• Onecultivatingonsite

What’s Out There

2

• Flower• MoonRocks• VaporCartridges• Concentrates• Topicals• FoodProducts

Products

3

• Cultivation• Extraction• Cooking/FoodPreparation• Packaging

Operations

4

Cultivation

5

Product - Flower

6

Oil Extraction

7

Purification

8

Kitchen

9

Vial Filling

10

• Vesselwashing• Kitchencleanup• Irrigationwater(hauledoffsite)

Process Discharges

11

Vessel Washing

12

Sink Area

13

Grease Trap

14

Irrigation Water

15

• Totalprocessdischarge:50gpd average• Chemicalsused:alcohols,acetone,cleaners,CO2

• Pretreatment:greasetraponly• Sampleresultsshowednopollutantsabovebackgroundlevels

• MeetscriteriaforMWRA’sLowFlow/LowPollutantPermit

Permitting

16

• Inspectannually• Sampleoccasionally• Amendpermitifproductionincreasesorchemicalusechanges

• Inspectdispensaryonlylocations

Follow up

17