As-Needed Supplemental Carbon for North City Water Reclamation Plant

The City of San Diego is seeking a supplier to provide a non‑hazardous, glycerin‑based supplemental carbon (60‑90 % glycerin) for the North City Water Reclamation Plant to support denitrification. The contract is a one‑year “as‑needed” supply agreement with the option to renew up to four additional one‑year terms. Bidders must submit a certificate of analysis, safety data sheet, and other compliance documentation, and must be able to deliver liquid carbon within five business days of an order (48 hours for emergencies). The award will be made to the lowest responsible and responsive bidder. • Product: glycerin‑based supplemental carbon (60‑90 % glycerin, ≤ 1 % methanol, specific gravity 1.19‑1.30, pH 4‑11, COD 900 k‑1.3 M mg/L). • Delivery: liquid form to NCWRP, 5:30 a.m.–2:00 p.m. on weekdays, using sealed tanker trucks; emergency deliveries within 48 hours. • Contract value: not pre‑specified; bidders must propose unit prices for partial (4,600 gal) and full (82,937 gal) deliveries.