Publication / availability
Tender notice dated 17.08.2026; bid documents available for download from 20.08.2026 to 22.09.2026.
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Design construction supply erection commissioning 4.50 MLD capacity Sewage Treatment Plant(STP)with 10 years of Operation Maintenance in Sirkali Municipality in Tamil Nadu on Design Build Operate and Transfer DBOT Basis
Sirkazhi Municipality · Sirkali, Tamil Nadu2026_MAWS_696306_1
Written by TenderKart AI from the documents published when it was generated. Check the tender for later corrigenda before you bid.
20 Aug 2026
22 Sept 2026
₹8.8 Cr
₹8.8 L
All important dates as they stand after corrigenda: publication, pre-bid/clarification deadline, bid submission deadline, bid opening, and bid validity period.
Tender notice dated 17.08.2026; bid documents available for download from 20.08.2026 to 22.09.2026.
Pre-bid meeting: 31.08.2026 at 11.00 AM at Sirkali Municipality. Pre-bid questions were to reach the Employer one week before the meeting (24.08.2026); the general clarification cut-off is earlier than 15 days before bid submission (07.09.2026).
Online bids must be uploaded by 22.09.2026, 3.00 PM IST.
Technical bids open online on 22.09.2026 at 3.30 PM IST at the concerned ULB / Commissioner, Sirkali Municipality.
At least 90 days after the bid-submission deadline; any requested extensions ordinarily may total no more than 180 days.
Tender value or estimated cost, EMD/bid security (amount, acceptable forms, validity), tender document fees, performance security, and key payment terms.
Estimated bid value: Rs.8.81 Crores (Rs.8,81,00,000).
EMD: Rs.8,81,000. The special e-tender clause requires online remittance through the portal only, by RTGS/e-BG; no other form is accepted. A bank-guarantee bid security must remain valid 45 days beyond the 90-day bid validity.
Nil: bid documents are downloadable free of cost.
Within 21 days of the Letter of Acceptance, the successful bidder must furnish performance security equal to 2% of the contract price including O&M value and GST, by bank draft or acceptable bank guarantee. Construction performance security remains valid until seven calendar months after the Completion Certificate.
Total retention is 5%: half is payable with the final bill, while the balance 2.50% is retained without interest for the 10-year defect-liability period and may be released against an irrevocable bank guarantee through the O&M period.
Civil works are paid by item milestones in the interim schedule; mechanical/electrical/instrumentation payments are 70% on supply at site, 10% erection, 15% testing and commissioning, and 5% performance test/commissioning certificate. Unscheduled completion items earn no extra payment.
Annual O&M price is paid monthly: 70% fixed and 30% performance-based. Fixed payment is due within 15 days of monthly billing, after review/certification within 7 days. KPI below 50% gives no O&M payment; electricity is paid by the Employer, but excess use above the guarantee is recovered from interim certificates.
Every pass/fail eligibility and qualification requirement: experience and past performance, turnover/net worth, registrations and certifications, consortium/JV rules, and debarment or blacklisting conditions.
Private entities, eligible government-owned entities, and a JV may bid. The bidder must have no conflict of interest, must not participate in multiple bids, and must not be associated with the project consultant/designer/Engineer.
Minimum annual construction turnover: INR 881.00 lakhs in any two of the last five financial years stated in the tender. Prior-year figures are escalated 5% per year to 2025-2026 price level.
Between 01.04.2021 and the bid deadline, complete either two similar works each at least INR 220.50 lakhs (25% of project cost), or one similar work at least INR 440.00 lakhs (50%). Eligible roles include prime contractor, JV member, management contractor, or subcontractor.
At least one JV partner must have designed, constructed, commissioned and provided at least two years' O&M in the last five financial years for an STP/ETP using ASP/MBBR/SBR (preferably SBR) of at least 2.25 MLD. Alternatively, the bidder may meet either design or construction/commissioning experience and nominate a qualified subcontractor for the other, with both covering a 2.25 MLD plant and two years' O&M.
Only a two-member JV (lead + one working partner) is permitted by the specific qualification clause. Lead must meet at least 50% of turnover, the other member at least 25%, and collectively 100%. All partners are jointly and severally liable; the bid must include a signed JV agreement or signed LOI plus proposed agreement, and the successful JV must register the agreement before contract execution.
Liquid assets and/or available credit must be at least Rs 250 lakhs. Available bid capacity, A×N×1.5−B, must exceed the total bid value; N is two years and ongoing commitments must be certified by an Engineer not below Executive Engineer/equivalent.
The implementation team must include the stated project manager, civil/site, mechanical, electrical, quality, instrumentation and environmental personnel with 5–10 years' experience; personnel at serials 2–6 must also have similar STP implementation/installation experience. Equipment is to be proposed as required by the bidder's design and methodology.
Bidder, JV members and relevant subcontractors must not fall within the tender's bankruptcy, sanctions, criminal, tax/social-security, contract-termination or sanctionable-practice exclusions. Misrepresentation, abandonment, poor completion, inordinate delay, adverse litigation/financial failure, or unjustified prior high pricing may disqualify even an otherwise qualified bidder.
What is being procured: the work, supplies or services, deliverables and quantities, locations, phases, completion or delivery timelines, applicable standards, and notable exclusions.
Design, construct, supply, erect, commission, operate and maintain a 4.50 MLD sewage treatment plant in Sirkali Municipality, then transfer it in good working condition after ten years of O&M.
Divert used water now entering water bodies to the pumping station/STP inlet, treat to TNPCB or better standards, and discharge treated water to the existing canal about 100 m from the STP; the indicated discharge point is 9°31'52.44"N, 78°36'37.82"E. The proposed process is SBR.
Includes surveys, geotechnical investigation, process/hydraulic design, P&ID, environmental assessment, civil/architectural/structural and E&M drawings/calculations, instrumentation/control, bypass arrangements, testing, landscaping, roads/pathways, drainage, compound wall/gates, yard lighting, 60 sqm administration/store building, 30 sqm laboratory, O&M manuals and as-built drawings.
Tender schedule states 144 months total: 3 months design/statutory approval, 18 months construction/supply/erection, 3 months commissioning/performance trial and certificate, and 120 months O&M. Start is within 15 days of notice to proceed.
Operate the STP and associated I&D/allied electro-mechanical and computerized data-acquisition assets, provide safety equipment and six months' municipal staff training, maintain OCEMS (pH/TSS/BOD linked to TNPCB) for at least five years, and hand over drawings, software/proprietary rights, manuals and reports. Effluent guarantees include 4.50 MLD output, BOD 10 mg/l, COD 50 mg/l, TSS 10 mg/l and the other listed TNPCB/CPCB parameters.
The complete checklist of documents to submit — mandatory vs conditional, with any prescribed formats, proformas or annexures — plus how to submit: portal and mode, envelope/cover structure, digital signature requirements, signing and attestation rules, and physical originals with their deadline.
Submit online only through www.tntenders.gov.in under the two-cover system: technical/qualification documents and EMD in the Technical Bid, and the priced BOQ in the Financial Bid. No physical-original submission deadline is stated.
A valid Class 3 DSC is mandatory. Every tender page is to be signed and uploaded; technical pages must be sequentially numbered. Credentials must carry the bidder/authorized signatory's signature and office seal, and qualification credentials must be notarized; unsigned credentials are ignored.
Upload scanned copies; retain originals of performance/client certificates for verification whenever requested. The tender does not identify any original that must be physically delivered with the bid.
Every corrigendum/addendum in order — what changed (original vs amended value), its impact, and the action for the bidder — ending with the values that finally apply.
Published 26.08.2026: clarifies that STP construction and ten-year O&M form one composite evaluation scope. L1 is the bidder with the lowest total evaluated price comprising both components; no separate construction-L1 and O&M-L1 will be selected. Bidder action: price both construction and every O&M year and optimize the combined evaluated total.
All other conditions remain unchanged: bid value Rs.8.81 Crores, EMD Rs.8,81,000, pre-bid 31.08.2026 11.00 AM, online submission 22.09.2026 3.00 PM, opening 22.09.2026 3.30 PM, and minimum 90-day bid validity. Evaluation is one composite construction-plus-ten-year-O&M bid.
Genuine conflicts within and across the documents (original vs corrigenda, clause vs annexure, tender document vs BOQ): both sides with citations, and which value prevails.
Tender schedule/NIT says 31.08.2026 at 11.00 AM, while generic ITB 9.2.1 says 09.06.2026 at 11.00 AM—before publication. The tender-specific schedule prevails: 31.08.2026.
The front schedule gives 3+18+3 months before O&M (24 months), but Contract Data states the intended completion date for construction works is 36 months. The detailed phase schedule is more specific and aligns with the 144-month total, but bidders should obtain an addendum confirming 24 months.
The front schedule and performance-target section state three months for commissioning/trial run, whereas Scope of Work and Activity Schedule require six months. No corrigendum resolves this; price and programme conservatively for six months pending clarification.
ITB 15.1 permits BG, certified cheque, bank draft or letter of credit, but the later special e-tender clause 36 mandates portal-only RTGS/e-BG and rejects every other form. The portal-specific clause prevails: use RTGS/e-BG online.
ITB 31.1 requires a 2% performance security on total contract price including O&M and GST, while the printed O&M guarantee states 2.5% of total equipment cost. These are different rates and bases; neither expressly supersedes the other. Seek written confirmation whether Annex B is additional to the 2% security and 2.5% retention.
English NIT and bid schedule state 20.08.2026, but the Tamil notice on page 4 states 30.08.2026. The consistent English tender schedule and actual e-tender availability support 20.08.2026.
The original evaluation text says first-year construction cash flow is 0.50×X but parenthetically calls it 30% of construction cost; it also repeats 0.50×X for year two. Corrigendum confirms composite construction+O&M L1 but does not repair this cash-flow typo. Request the official evaluation workbook/weighting.
Only critical, tender-specific pre-bid queries that could materially change bid/no-bid, pricing, eligibility or contractual risk. Skip generic or obvious questions the documents already answer clearly.
Please amend/confirm whether pre-O&M completion is 24 months or 36 months, and whether commissioning/performance trial is 3 months or 6 months; identify the milestones used for LD.
Please issue one security schedule stating whether the 2% total-contract performance security, Annex-B 2.5%-of-equipment O&M guarantee, and 2.5% ten-year retention/BG are cumulative, with exact validity and claim periods.
Please provide the exact NPV/evaluation workbook and correct the 0.50×X (30%) inconsistency, confirming treatment of construction cash flows, annual O&M prices, land cost and GST under the corrigendum's composite-L1 rule.
Clarify whether the ULB or contractor is legally responsible for CTE/CTO, provide site/land and discharge-point approvals, and list which statutory/TNEB/CEIG charges are paid directly or reimbursed by the Municipality versus included in the bid.
Provide the definitive I&D drawings, asset register, lengths/diameters, pumping-station interface and condition of existing assets to be maintained, because O&M covers assets from sewage outfalls to the STP inlet but the priced scope is predominantly described as the STP.
Commercial, legal and execution risks a bidder should weigh: liquidated damages and penalties, unusual or one-sided clauses, tight timelines, and payment or security risks.
Milestone LD rates are Rs.20,000/day, Rs.40,000/day for milestones 2–4, and Rs.60,000/day for milestone 5; aggregate LD is capped at 10% of final contract price. Reaching maximum LD is also a termination trigger.
A 5% retention structure applies; 2.5% can remain tied up without interest through a 10-year defect-liability period unless replaced by an irrevocable BG continuing through O&M. This sits alongside performance-security obligations.
Thirty percent of O&M payment is performance-based, while fixed payment also suffers proportionate deduction at 50–79% KPI achievement and 100% deduction below 50%. Excess electricity over guaranteed consumption is recovered from contractor payments.
The unresolved 24-versus-36-month construction and 3-versus-6-month trial-run conflicts create programme, preliminaries and LD exposure. Scope is expressly non-exhaustive and any additional item needed for complete performance is included without extra payment.
Bidder must investigate the site, soils and utilities and price dewatering, diversions, barricading and permissions. Adverse ground may qualify as compensation only if materially worse than reasonably foreseeable from issued/public information and visual inspection.
Contractor carries design/approval support, electrical-inspector approval and potentially ambiguous CTE/CTO responsibility; construction cannot start without TNPCB CTE and operations cannot start without CTO. Delayed clearances could affect the aggressive phase programme.
Minimum cover is Rs.30 lakhs per occurrence with four occurrences kept continuously reinstated. Late submission of an updated programme attracts Rs.10,000 withholding; updates are every 30 days.
Employer may cancel/reject all bids before award without liability; corrupt/fraudulent conduct permits bid/performance security forfeiture and a two-year exclusion from the Authority's tenders.
The inviting authority and relevant contacts: office, person, designation, address, phone and email — and which address receives physical submissions, if any.
Commissioner (F.A.C), Sirkali Municipality, Mayiladuthurai District, Tamil Nadu 609110. Email: [email protected]. No phone number is printed in the reviewed tender documents.
Clarifications: Municipal Engineer, Sirkali Municipality, Sirkali, Tamil Nadu 609110; email [email protected]. Bid submission is online only, so no address for mandatory physical submission is specified. Technical bids open at the Commissioner's office at the same address.