SPECIAL REPORT
LEEDuser expert
Maeve Donohue
LEED AP BD+C, WELL AP, LFA, Fitwel Ambassador
Introba
Consultant
SPECIAL REPORT
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Credit language
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Requirements
For cooling towers and evaporative condensers, conduct a one-time potable water analysis, in order to optimize cooling tower cycles. Measure at least the five control parameters listed in Table 1.
Table 1. Maximum concentrations for parameters in condenser water
| Parameter | Maximum level |
|---|---|
| Ca (as CaCO3) | 1,000 ppm |
| Total alkalinity | 1,000 ppm |
| SiO2 | 100 ppm |
| Cl- | 250 ppm |
| Conductivity | 2000 µS/cm |
Table 2. Points for cooling tower cycles
| Cooling tower cycles | Points |
|---|---|
| Maximum number of cycles achieved without exceeding any filtration levels or affecting operation of condenser water system (up to maximum of 10 cycles) | 1 |
| Achieve a minimum 10 cycles by increasing the level of treatment in condenser or make-up water OR Achieve the number of cycles for 1 point and use a minimum 20% recycled nonpotable water |
2 |
Pilot Alternative Compliance Path available
A pilot alternative compliance path is available for this credit to certain project types without cooling towers. For more information, please visit the Pilot Credit Library Pilot ACPs: No Cooling Tower - alternative compliance path (BD+C) No Cooling Tower - alternative compliance path (O+M) No Cooling Tower - alternative compliance path (O+M: Data Centers)What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
What if my building doesn’t use a cooling tower?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
For cooling towers and evaporative condensers, conduct a one-time potable water analysis, in order to optimize cooling tower cycles. Measure at least the five control parameters listed in Table 1.
Table 1. Maximum concentrations for parameters in condenser water
| Parameter | Maximum level |
|---|---|
| Ca (as CaCO3) | 1,000 ppm |
| Total alkalinity | 1,000 ppm |
| SiO2 | 100 ppm |
| Cl- | 250 ppm |
| Conductivity | 2000 µS/cm |
Table 2. Points for cooling tower cycles
| Cooling tower cycles | Points |
|---|---|
| Maximum number of cycles achieved without exceeding any filtration levels or affecting operation of condenser water system (up to maximum of 10 cycles) | 1 |
| Achieve a minimum 10 cycles by increasing the level of treatment in condenser or make-up water OR Achieve the number of cycles for 1 point and use a minimum 20% recycled nonpotable water |
2 |
Pilot Alternative Compliance Path available
A pilot alternative compliance path is available for this credit to certain project types without cooling towers. For more information, please visit the Pilot Credit Library Pilot ACPs: No Cooling Tower - alternative compliance path (BD+C) No Cooling Tower - alternative compliance path (O+M) No Cooling Tower - alternative compliance path (O+M: Data Centers)Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »
What if my building doesn’t use a cooling tower?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
LEEDuser expert
Maeve Donohue
LEED AP BD+C, WELL AP, LFA, Fitwel Ambassador
Introba
Consultant
