Re g ula tio n 84 Re c la ime d Wa te r Sta ke ho lde r Me e ting Proposal: c annabis c ultivation Proposal: onsite syste ms Se pte mbe r 26, 2017 Wo rksho p wo rkb o o k is a va ila b le he re fo r do wnlo a d: http:/ / c o lo wq fo rum.o rg / wo rkg ro up-re c la ime d-wa te r.html T hank yo u fo r par tic ipating!
We lc ome Brandi Honeycutt Trisha Oeth Environmental Protection Administrator S pecialist Water Quality Control Permits S ection Commission Water Quality Control CDPHE Division CDPHE
We lc ome & Ove rvie w Lisa Beutler Executive Facilitator S tantec
Wo rksho p Go a ls Pro vide sta ke ho lde rs a n o ve rvie w o f the pro po se d c ha ng e s to Re g ula tio n 84 a nd re g ula to ry pro c e ss Re c e ive input fro m pa rtic ipa nts o n b e ne fits, c o nc e rns, a nd a dditio na l c o nside ra tio ns re g a rding this pro po se d use o f re c yc le d wa te r
Wo rksho p Ag e nda I te ms Page 3 in WB Welcome and Overview Opening Remarks Topics for discussion Topic 1: Cannabis cultivation 1. Background on cannabis cultivation and water use 90 minutes o f 2. Overview of regulatory proposal disc ussio n 3. Discussion Topic 2: Centralized and onsite treatment systems 1. Definition of centralized and onsite systems 30 minutes o f 2. Overview of regulatory proposal disc ussio n 3. Discussion Topic 3: To be determined by stakeholders Wrap up, closing comments, evaluation, adjourn
http://colowqforum.org/pdfs/code-of- Gro und “Rule s” conduct/CWQF%20Code%20of%20Conduct.pdf Co me pre pare d fo r the sc he dule d disc ussio n. Page Spe ak up so that e ve ryo ne c an he ar. 4 in WB Only o ne pe rso n sho uld spe ak at a time . Be c o nc ise . Avo id pe rso nal attac ks. Be re spe c tful o f o the rs’ pe rspe c tive s and re spo nsib ilitie s. So rt fo r similaritie s that may e xist in spite o f diffe re nc e s. L iste n c are fully and re spo nd in a manne r that mo ve s the disc ussio n fo rward. Cle arly ide ntify re maining diffe re nc e s that are no t re so lve d. Avo id sne ak attac ks. Re spe c t the pro c e ss b y le tting o the rs kno w o f po sitio ns and ac tio ns that will b e take n re g arding the issue s b e ing disc usse d. De c isio n making me tho d: Co nse nsus (e ve ryo ne unde rstands and c an live with the de c isio n), F all b ac k me tho d: Mino rity re po rt Avo id e nd runs. Re spe c t the pro c e ss b y le tting o the rs kno w if diffe re nc e s re main that will b e purse d in o the r ve nue s (e .g . dire c tly with o the r me mb e rs in the e xe c utive and/o r le g islative b ranc he s o f state o r fe de ral g o ve rnme nt. I de ntify c o nve rsatio ns that are n’ t wo rking . Bac ktrac k fro m po o r re sults.
Ope ning Re ma rks Damian Higham S enior Planner Recycled Water Program Denver Water
Water Reuse in Colorado Fort Collins • Re gulation 84 Denver • Non- potable use s • 5.2 billion gallons pe r ye ar (16,000 AF Y) of potable wate r Colorado save d Springs • Non- potable • Se par ate distr ibution syste ms
Centralized Recycled Water Treatment Page (conceptual) 12 in WB Industrial Industrial Pre-Treatment Wastewater Treatment Wastewater Treatment Pollutants of special concern Process Preliminary Primary Secondary Tertiary/Advanced Disinfection Targets (some toxic chemicals, metals, pesticides, etc.) Large materials Medium particles & Organic matter (compounds Some facilities go one step Kill pathogens (rags, plastic bags, floating oils/grease that would drop oxygen levels further to reduce pollutants of Treatment rocks, etc.) in receiving river) & some special concern (nitrogen, Targets removal of trace chemical phosphorus, particles) & some constituents and pathogens removal of trace chemical constituents and pathogens Domestic Wastewater Wastewater Treated Wastewater Effluent Recycled Water Treatment Process Advanced Disinfection Pollutants of special concern (particles, pathogens) are Kill pathogens Treatment Targets removed by various treatment methods; some removal of trace chemical constituents, etc. is achieved Conventional water Non-Potable treatment plant Recycled Water Potable Water Other water sources
Colorado Water Plan • “The CDPHE is committed to working with stakeholders to ensure that health and environment are protected while water reuse expands ” • 2050 annual M&I supply-demand gap could be as high as 560,000 AFY • 8 Actions specific to increasing reuse in Colorado – Increasing funding and incentives for water recycling and expanding the list of uses for which recycled water can be applied. 10 9/27/2017
Strategies to meet the supply gap • Agricultural water transfers • Growth into existing supplies • In-basin projects • New transbasin projects • Water storage • Water conservation and reuse 11 9/27/2017
Strategies to meet the supply gap • Agricultural water transfers • Growth into existing supplies • In-basin projects Politically • New transbasin projects Sensitive • Water storage • Water conservation and reuse 12 9/27/2017
Denver Water: Proponent for New Uses under Reg 84 Currently Allowed New Uses Being Proposed • • Industrial reuse (evaporative, Indoor urinal and toilet flushing washwater, and non-evaporative • industrial processes) Irrigation of cannabis Page 8 in • Non-discharging construction and WB road maintenance • Zoo operations • Commercial laundries • Automated and manual vehicle washing • Landscape irrigation (restricted, unrestricted, and resident-control) • Agricultural irrigation (non-food crop irrigation and silviculture) • Nonresidential and residential fire protection 13 9/27/2017
Denver Water: Proponent for New Uses under Reg 84 Current major types of water Potential paradigm for water reuse practiced in Colorado reuse practice in Colorado Non-food crop Other non-food Cooling Cooling irrigation crop irrigation and other and other (seasonal) (seasonal) industrial industrial Landscape irrigation Landscape irrigation uses uses (seasonal) (seasonal) ? Toilet flushing Cannabis (year round) irrigation (year-round)
Page 7 in Colorado Reclaimed Water WB Category 3 Category 1 Category 2 Minimum Secondary Treatment with Secondary Treatment with Secondary Treatment with Treatment Disinfection Filtration and Disinfection Filtration and Disinfection 126 monthly geometric E. coli /100 mL 126 monthly geometric mean None in 75% samples and mean and 235 single sample Limit and 235 single sample max 126 single sample max max < 3 monthly average and < 3 monthly average and Turbidity Limit max 5 in <5% samples in a max 5 in <5% samples in a (NTU) month month Total Suspended 30 mg/L daily max Solids Limit Industrial (Category 1 uses, Industrial (evaporative, non- and washwater applications) Industrial (Category 2 uses) discharging construction and Landscape irrigation Landscape irrigation road maintenance, and non- (Category 1 uses, and (Category 2 uses, and evaporative industrial unrestricted) resident controlled) processes) Commercial (Category 1 Commercial (Category 2 Allowable Uses Landscape irrigation uses, laundries, and uses) (restricted) automated and manual Fire Protection (Category 2 Commercial (zoo operations) vehicle washing) uses and residential fire Agricultural irrigation (Non- Fire Protection protection) food crop irrigation and (Nonresidential) Agricultural irrigation silviculture) Agricultural irrigation (Category 1 uses) (Category 1 uses) 15 9/27/2017
Pre mise s Ne wly pe rmitte d use s wo uld c re a te a dditio na l wa te r supply in a stre sse d Pro mo ting the use syste m. o f re c la ime d wa te r while pro te c ting pub lic he a lth a nd Ne wly pe rmitte d use s the e nviro nme nt is wo uld a llo w De nve r the pa ra mo unt Wa te r to ta ke full g o a l o f Re g 84. a dva nta g e o f e xisting infra struc ture . Po ta b le wa te r ma y no t b e ne c e ssa ry fo r c a nna b is c ultiva tio n & to ile t flushing .
Co nte xt o f Disc ussio n T o pic s Regulation Policy Guidance Not in scope • Enforceable • Supports enforcement • Non-enforceable • Items of important consideration in • Items that need to be • CDPHE interpretation • Best practices and implementation, but not codified in regulation to of the regulation; information to help within the scope of a protect public health provides specific utilities comply potential change to and the environment requirements • Developed by CDPHE Reg. 84 or • Requires a • Can be modified by staff supplemental guidance Commission hearing to CDPHE staff with • Notional example: • Notional example: modify approval by the Procedures for commission; allows Cost of dual-plumbing • Notional example: cleaning the flexibility to incorporate a facility Approved uses of distribution system new science recycled water • Notional example: approved treatment processes
T opic 1: Cannabis c ultivation Damian Higham S enior Planner Recycled Water Program Denver Water
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