| Award | SODIUM HYPOCHLORITE - (BWT) DEP | Citywide Administrative Services | Kuehne Chemical Company Inc. | $66.2M | Competitive Sealed Bids | May 8, 2023 | 85723B0019001 |
| Award | SODIUM HYPOCHLORITE SOLUTION - DEP (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc | $4.9M | Competitive Sealed Bids | Nov 18, 2021 | 85721B0175001 |
| Award | LIQUID CAUSTIC SODA (SODIUM HYDROXIDE) - DEP (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc | $4.9M | Competitive Sealed Bids | Nov 18, 2021 | 85721B0174001 |
| Award | CHLORINE, LIQUID - DEP | Citywide Administrative Services | Kuehne Chemical Company Inc. | $5.3M | Competitive Sealed Bids | Sep 24, 2020 | 8572000220 |
| Award | LIQUID CAUSTIC SODA (SODIUM HYDROXIDE) - DEP (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc. | $11.0M | Renewal | Mar 5, 2020 | 8571500482 |
| Award | SODIUM HYPOCHLORITE SOLUTION - DEP (BWT) | Citywide Administrative Services | Kuehne Chemical Company Inc | $16.1M | Renewal | Feb 28, 2020 | 8571500459 |
| Award | LIQUID CAUSTIC SODA (SODIUM HYDROXIDE) - DEP (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc | $15.4M | Competitive Sealed Bids | May 12, 2017 | 8571500482 |
| Award | SODIUM HYPOCHLORITE SOLUTION - DEP (BWT) | Citywide Administrative Services | Kuehne Chemical Company Inc | $20.5M | Competitive Sealed Bids | Dec 9, 2016 | 8571500459 |
| Award | SODIUM HYPOCHLORITE SOLUTION - DEP (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc | $2.6M | Competitive Sealed Bids | Jul 27, 2016 | 8571600297 |
| Award | LIQUID CAUSTIC SODA - DEP (BWT) | Citywide Administrative Services | Kuehne Chemical Company Inc | $3.8M | Competitive Sealed Bids | Apr 1, 2016 | 8571600126 |
| Award | SODIM HYPOCHLORITE SOLUTION (W.W.T.P.) | Citywide Administrative Services | Kuehne Chemical Company Inc | $35.0M | Competitive Sealed Bids | Jul 13, 2007 | 701099 |
| Award | BLEACH, SODIUM HYPOCHLORITE (BWSO) | Citywide Administrative Services | Kuehne Chemical Company Inc | $5.0M | Competitive Sealed Bids | Jun 20, 2005 | 857500840 |