These are surfaces that require more frequent and thorough sanitization. Cleaning protocols should list these surfaces within the project and incorporate the correct cleaning instructions accordingly. Based on CDC Environmental Checklist for Monitoring Terminal Cleaning.
If a pesticide has not yet been evaluated by the Pesticide Research Institute's tools above, use the Guide to the San Francisco's Reduced Risk Pesticide List Hazard Tier Review Process, which outlines the procedure for evaluating pesticides.
Table A3 was removed from the WELL Building Standard as part of the Q2 2017 Addenda process. However, please note that the remaining tables (Table A4 and Table A5) were not renumbered so that project teams that registered prior to the release of the Q2 addenda can continue to access these tables as they had previously.
An effective cleaning protocol must consider equipment use and staff training. A project's cleaning practice must include or be evaluated to incorporate the following changes and/or additions.
Projects must implement a program for the use of sustainably powered cleaning equipment that abide by Green Seal 42, Standard for Commercial and Institutional Cleaning Services for Powered Equipment Use/ Maintenance Plan or local equivalent for projects outside the United States. Additionally, the following requirements must be met:
A successful cleaning program requires, beyond the selection of safer products, proper training and use of green cleaning materials and products. Projects must have in place a cleaning program that addresses each of the following:
By establishing criteria that consider human health endpoints, certified cleaning products eliminate harmful ingredient contents and reduce potential associated hazards. Cleaning, disinfection, sanitization, hand soap and sanitizers selected for use must meet the below criteria. These include products certified as EPA’s Safer Choice, GreenSeal, Environmental Choice New Zealand, EU Ecolabel, Nordic Ecolabel etc.
High-touch surfaces present increased risk for contamination, particularly in high transit areas. A cleaning protocol must take into account the degree to which disinfection and sanitization are necessary. Unnecessary disinfection and sanitization can negatively impact immune health. Disinfection and sanitization reduce exposure to microorganisms and parasites that can result in decreased disease and illness, however these practices are also increasingly linked to a rising prevalence of hypersensitivity disorders and autoimmune diseases, especially in industrialized nations.
To effectively apply these cleaning principals, projects must:
Entryway maintenance and care is critical to minimizing dirt and pollutants tracked in from the outdoor environment. Clean and well-maintained entryways can contribute greatly to improved indoor air quality.
In order to minimize the migration of contaminants into the building, projects shall adhere to the below cleaning and maintenance guidelines for entryways and lobbies:
This table indicates allowable mercury limits in lamps, as referred to in the Fundamental Material Safety feature. Values from LEED PBT source reduction - mercury prerequisite
|Lamp||Maximum Hg Content|
|Compact, integral ballast||3.5 mg|
|T-5, circular||9 mg|
|T-5, linear||2.5 mg|
|T-8, eight-foot||10 mg|
|T-8, four-foot||3.5 mg|
|T-8, two- and three-foot||3.5 mg|
|T-8, U-bent||6 mg|
|Lamp||Maximum Hg Content|
|400 W or less||10 mg|
|Over 400 W||32 mg|
This table specifies appropriate temperature ranges for storing produce. Information is adapted from the Cornell Storage Guidelines for Fruits and Vegetables.
|Rosaceae (Apples, Cherries, Peaches, Pears and Strawberries|
|Solanaceae (Eggplant, Peppers, Potatoes and Tomatoes)|
|Cucurbitaceae (Cantaloupe, Cucumbers, Summer Squash, Watermelon and Winter Squash)|
|Asteraceae (Artichokes, Endive/Escarole and Lettuce|
|Umbelliferae (Carrots, Celery, Fennel, Parsley and Parsnips)|
|Chenopodiaceae (Beets, Spinach and Swiss Chard)|
|Brassicaceae (Broccoli, Brussel Sprouts, Cabbage, Cauliflower, Collards, Kale and Radishes)|
|Amaryllidaceae/Liliaceae (Asparagus, Chives, Garlic, Leeks and Onions)|
The Equivalent Melanopic Lux (EML) is a measurement of light's effects on the circadian cycle.
This unit Equivalent Melanopic Lux (EML) was proposed by Lucas and others (Lucas et al., "Measuring and using light in the melanopsin age." Trends in Neuroscience, Jan 2014). The authors provided a toolbox which for a desired spectrum derives equivalent “α-opic” lux for each of the five photoreceptors in the eye (three cones, rods, and the ipRGCs). The authors selected scaling constants such that each of the values would be identical to each other and the standard definition of lux for a light spectrum of perfectly uniform energy (CIE Standard Illuminant E).
Given a spectrum of light, each equivalent α-opic lux is related to each other by a constant.
To calculate the equivalent melanopic lux (EML), multiply the visual lux (L) designed for or measured in a building by this ratio (R): EML = L × R. For example, if incandescent lights provide 200 lux in a space, they will also produce 108 equivalent melanopic lux. If daylight is modeled to provide the same visual brightness (200 lux), it will also provide 220 equivalent melanopic lux.
To calculate the melanopic ratio of light, start by obtaining the light output of the lamp at each 5 nm increment, either from manufacturer or by using a spectrometer. Then, multiply the output by the melanopic and visual curves given below to get the melanopic and visual responses. Finally, divide the total melanopic response by the total visual response and multiply the quotient by 1.218.
Although the ipRGCs have a peak sensitivity at about 480 nm, the melanopic response in this table peaks at 490 nm because it takes into account the adult eye's lens, which preferentially transmits longer wavelength light.
|Wavelength||Light Output||Melanopic Curve||Melanopic Response||Visual Curve||Visual Response|