Lithium pond geosynthetics: certified installation, seam CQC and harvesting without damaging the liner (Catamarca)
A salar's ponds are, literally, a giant tarpaulin welded by hand at 4,100 meters. Tres Quebradas has already committed 3,828,000 m² of geomembrane prob bill of quantities published by the contractor plus as much again in geotextile across two stages —and the roll came from China—, Sal de Vida has 902 hectares of design in its Stage 2 prob technical report of 2022 and Hombre Muerto Oeste another 250 unconf. All of it is welded on site, with certified personnel, between +26 and −30 °C and winds of up to 120 km/h, on eight-month schedules that include winter. The figure that opens the door: in the category map the provincial mining suppliers' chamber published in 2023 —19 categories, 123 memberships— «geomembranes» does not appear and the four specialized installers serving these salars are registered in the chamber of Salta. And in the roll of the other Catamarca chamber, CASEMICA —195 members across 42 activities—, there is no geomembrane firm either. The market is not empty: it is served from the province next door.
A window: the ponds are built 2026-2031 with four projects under construction at once; afterwards demand falls to replacement, harvesting and liner integrity.
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What the market is made of
The TAM is activity, not what you will invoice, and in this niche it splits into three layers that do not have the same owner. The roll —geomembrane and geotextile— travels today from China inside the operator's procurement chain, and comes in tariff-free under the mining exemption: that is captive. So is salt harvesting, because the operator bought the fleet. Your gap is what cannot be imported: the installation with its seam quality control, which is executed on the pond and certified meter by meter, plus liner integrity and harvesting supervision.
~USD 14 M/year (~60% of the TAM): the whole roll of layer (a) —today almost entirely imported through the operator's chain: Zijin brought it from China, the foreign EPCM firms write the specification and Rio Tinto states 'program based contracting' and 'Design One, Build Many', which is the language of global framework supply agreements—; harvesting at 75-90% (the operator buys the harvesting equipment, per its own 20-F); and whatever the civil contractor keeps as its own sub-scope when it has a crew (the case of a civil contractor with its CQC supervisor).
~USD 5-15 M/year addressable by a local/domestic entrant (midpoint ~USD 9 M/year): all of layer (b) —installation plus seam CQC across the entire pipeline, which is not imported because it is executed on the pond and certified m² by m²— plus liner integrity and harvesting supervision, plus the logistics and stockpiling of the roll in Fiambalá or Antofagasta de la Sierra (today each operator self-supplies).
See the full breakdown
USD 1.5-3 M/year for ONE entrant within 2-3 years (midpoint ~USD 2 M/year). Year 1: a 30-80 ha geosynthetics sub-scope inside somebody else's package (USD 0.7-4.4 M per contract). Year 2: add the liner integrity retainer plus harvesting supervision at 1-2 operations (USD 0.3-1.5 M/year recurring). Year 3: bid for a complete 200 ha package (2 M m² ≈ USD 10-22 M of geosynthetics) through a joint venture, with the Re.P.E.M. already met. A big package is not won in year one: it is won with a track record of m² approved by CQA.
Who really pays?
In two of the three layers, whoever signs the liner subcontract is not the mine but the civil contractor who won the pond package. There are three doors and they are quoted differently:
At Tres Quebradas both pond stages were contracted by LIEX S.A. (Zijin) with a joint venture of three construction firms from other provinces, an earthmoving contractor: its published bill of quantities is the m³ of berms and platform and the m² of geotextile and geomembrane. An entrant who wants the liner sells to that contractor, not to the mine.
For Tres Quebradas, 20 truckloads of Chinese-origin geomembrane came in through the San Francisco International Pass. On the Argentine side, a Buenos Aires City firm markets HDPE to GRI standards and offers the welding, and a manufacturer in Rosario states that it manufactures geomembrane of up to 3 mm targeting the Lithium Triangle — but there is no named lithium project. The tariff does not help: the imported roll comes in under the mining exemption.
Rio Tinto lists the salt harvesting equipment among its facilities under construction verif: the operator buys the fleet and harvests with its own people thesis. What can be sold to it from outside is the no-damage protocol and liner integrity: leak surveys, certified repair and re-certification after each campaign thesis. In the category there is already someone offering it —a company from Salta sells leak detection and repair in ponds— but from the neighboring province prob.
Which projects move this demand
Tres Quebradas stage 2: plant and infrastructure for 40,000 t/year of lithium carbonate via direct extraction (DLE), per art…
see the project →Lithium brine project in the Salar del Hombre Muerto (western zone), to produce 12,000 t/yr of lithium carbonate equivalent…
see the project →Expansion (Phase 1B) of the historic Fénix lithium-carbonate project in the Salar del Hombre Muerto, operated by Rio Tinto via Minera del Altiplano…
see the project →When the window opens
In geosynthetics the warning arrives months ahead, because the pond is built before the plant and the permit is published before the tender. Two investment deadlines force construction: Tres Quebradas until 30 November 2027 and Hombre Muerto Oeste until 31 December 2029. And within each year the calendar is the same for everyone: since January 2026 a winter procedure from 1 May to 30 September has been in force, and the eight-month construction window includes it. These four numbers are the ones that give notice.
See the evidence
See the evidence
See the evidence
See the evidence
Sal de Vida Stage 2 is 9.02 M m² = 38% of the volume ceiling estim our own calculation against the ceiling, and it is a 'very preliminary' Class 4 estimate for years 3-40 of the mine plan, not sanctioned.
See the evidence
3Q Phase 2 already has its RIGI resolution published —29-Jul-2026, with USD 594,136,000 verif of computable investment— but the act approves it as a direct-extraction plant, the route that needs the fewest ponds: the risk is no longer that the act will not come out, it is how many hectares of pond it actually calls for.
See the evidence
It is the killer of layer (a) and of half of layer (b): the global supplier sells supply PLUS turnkey installation and the operator closes a framework agreement. It has already happened: 3Q's roll came from China.
See the evidence
Fénix is selective adsorption, Kachi is Lilac's ion exchange, 3Q is hybrid adsorption, and Rio Tinto states it wants to define the best-in-class DLE technology standard and standardize 'Design One, Build Many'.
See the evidence
See the remaining 4 risks
The 50/50 split of the disputed Hombre Muerto strip is voided once Congress settles the boundary verif annex to Salta's Ley 8523.
See the evidence
The Mar-2024 injunction over the Río Los Patos sub-basin was lifted 5-2 in 2026 with the case still open before the IACHR: the litigation did not close, it paused.
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Past the peak, demand falls to 2-4%/year replacement of the stock plus harvesting and integrity: on the order of USD 3-6 M/year for the whole province. A company built solely on installation has to amortize in 4-5 years. The perpetual core exists but it is small: whoever does not sell harvesting and integrity switches off with the last pond.
July 2026 left five Fénix workers trapped above 4,500 masl under 2 m of snow and a historic −27 °C storm prob three outlets converging on the same event.
See the evidence
The opportunity in depth
The opportunity in depth
The geosynthetics sub-scope inside somebody else's package. Whoever wins a pond job is an earthmover —its published bill of quantities is cubic meters of berms and platform— and the liner is the specialized line item it subcontracts. A stretch of 30-80 hectares with your own welding and quality control crew is USD 0.7-4.4 M: SME size, and you sell to the civil contractor, not to the mine.
The differentiator we did not identify anyone selling, in the universes we reviewed: protected harvesting and membrane service life. The pond design leaves 0.3 m of permanent salt at the bottom precisely so that harvesting does not tear the geomembrane, and pond availability falls to ~91% because of harvesting downtime. There are two numbers there the operator can sign off on: tonnes harvested and leaks per hectare after the campaign. It is what turns a seasonal crew into an operations supplier with 40 years of mine plan ahead.
Contest the roll — but without building a factory. There is already an Argentine extruder declaring HDPE geomembrane up to 3 mm in 8-metre rolls and explicitly targeting the Lithium Triangle. Watch the fine print, because it decides whether this counts towards the local-content commitments: for the RIGI a good only counts as local if, on top of being sold by an Argentine company, it is of national origin under Annex I to Acuerdo de Complementación Económica N° 18 of MERCOSUR. Stocking an imported roll in Fiambalá does not change that; homologating the Argentine extruder's roll does — and it is the only thing that moves the 60% of the market that is imported today.
When you get paid, and what blocks it
already in
split
The two halite pond stages of Tres Quebradas for LIEX S.A. (Zijin): 200 ha executed + 200 ha under way = 3,828,000 m² of geomembrane + 3,828,000 m² of geotextile prob, at 4,100+ masl, between +26 and −30 °C, winds of 20 to 120 km/h and an 8-month schedule including winter. It is an earthmoving contractor: the liner is the specialized sub-scope inside its contract — that is where the subcontractor comes in.
Fénix: phase 1 and 2 civil works including the equalization pond with geomembrane, executed at 4,000 masl verif. Sal de Oro (Salta): pond earthmoving. Rincón (Salta): SBDF and sludge ponds under way. It had a «Geosynthetics CQC Supervisor» position published unconf: a natural joint-venture partner or a direct competitor to the entrant.
A member of CAPEMISA (Salta Mining Suppliers Chamber) in the geomembrane category: installation and sale of geosynthetics PLUS leak control with leak-tightness, tear and pressure testing. It names Livent (= Fénix, Catamarca) and Lithium Americas among its clients. It is the one already selling something close to the fine integrity package.
A CAPEMISA member in geomembrane: linings, thermofusion and electrofusion. It names Galan Lithium (= Hombre Muerto Oeste, Catamarca) among its clients — that is, it is already inside the operator with the highest local-content commitment among the Catamarca RIGI projects that disclose it (95.34%).
See the remaining 8 players
The other two members of CAPEMISA's geomembrane category. One sells installation AND supply (HDPE, LDPE, PVC) plus repair and environmental studies; the other sells pure installation. The category is served from Salta and Buenos Aires City, not from Catamarca.
The most complete competitor on the supply+service side: HDPE geomembrane 1.0/1.5/2.0/2.5 mm in rolls of up to 7.5 m to GRI GM-13/17/19/22/25 standards, PLUS hot wedge welding with automated equipment with GPS and recording of temperature, pressure and speed, and extrusion welding for details and repairs verif. It does not state that it manufactures.
It states that it manufactures HDPE and LLDPE geomembrane of up to 3,000 microns in rolls of up to 8 m by three-layer coextrusion, in conformity with GM13 standards, and it explicitly mentions the Lithium Triangle and the integrity of evaporation ponds; it also manufactures geotextile prob. It is an entrant's partner, not its rival: the gap in layer (a) is not the absence of a factory, it is homologation, scale and logistics.
20 truckloads of geomembrane brought in through the San Francisco International Pass for Tres Quebradas prob. Mind the order of magnitude: 2.04 M m² of 1.5 mm HDPE weigh ~2,876 t estim = 103-120 semi-trailers, so 20 trucks are a partial shipment, not the total. The tariff does not protect the domestic producer: the roll comes in with the import duty exemption of Ley 24.196 and of the RIGI itself.
A vertical integration threat: it sells the integrated pond package (geotechnical assessment, design, grading, construction, geomembrane installation, containment berms and supervision of filling and evaporation) verif. If it comes in, it takes liner and earthmoving together and closes the subcontract door.
They do not install: they write the specification and the CQA plan, and they decide which seam is approved and which installer qualifies. Technical homologation goes through them, not through the provincial counter.
CAPPROMIN 2023: 19 categories and exactly 123 memberships, and 'geomembranes' does NOT appear as a category verif. Re.P.E.M.: 229 active suppliers (May-2026); in the latest breakdown by department (194 registered, May-2025), only 12 in Antofagasta de la Sierra — the department of the three Salar del Hombre Muerto projects.
THE first local name in the category. It appears as a member of CASEMICA & ER -the Catamarca Chamber of Mining Services, Environment and Renewable Energy- with the declared category 'geomembrane lining, earthmoving'. That is exactly this niche's package. What weight it carries AND what weight it does not: the only source is the chamber's member directory, with a self-declared category, no CUIT, no locality and no project attributed -> 'probable', and no share is assigned to it. It does NOT CONTRADICT the finding this niche publishes: that 'geomembranes' does not appear as a category is true of CAPPROMIN's registry (2023), which is ANOTHER chamber; CASEMICA does have the category. The correct conclusion is refined: it is not that the province has no local supply in the category, it is that the local supply is not in the registry that was audited and does not yet have a single m2 of lithium pond documented in its name. The same listing also shows a firm with the category 'environment, geosynthetics, lining' -- this niche already lists it as a Buenos Aires City firm, so its membership in the Catamarca chamber indicates local presence, not provincial origin. Still to close: the firm's CUIT, locality and executed work. ⚠️ As of 2 Oct 2026 this firm no longer appears in CASEMICA's public member roll —195 members across 42 activities, none of them geomembranes or lining—, and neither does the Buenos Aires City firm.
The jobs it createsThe employment in this niche is measurable and it arrives early: the pond is built before the plant produces. La lectura completa para el que busca trabajo, en la hoja de este nicho para la gente →
calculate it
The number is our own estimate. The calculation, step by step, is below.
The full calculation, step by step
Concentration High and geographically displaced, with three distinct concentrations that are best not mixed. (1) Supply: concentration by import — the roll for the largest project comes from China through the operator's chain, and the only Argentine extruder that states the product (in Rosario) does not appear in any documented lithium project. (2) Installation: an oligopoly of 6-8 firms and not one of them from Catamarca — one national joint venture holds 100% of the province's contracted m², and the category's specialists are four members of the SALTA chamber (CAPEMISA), two of which already name the Catamarca operators as clients (Galan Lithium and Livent). On top of that, the category is a sub-scope inside a civil contract: whoever wins the earthmoving decides whether to subcontract the liner or keep it. (3) Harvesting: a monopoly of the operator itself — Rio Tinto lists the salt harvesting equipment as a facility under construction, i.e. it buys the fleet and harvests with its own people. Conclusion: the market is not unserved, it is served from Salta and from China; the gap is not one of existence but of domicile, homologation and fine specialization.
The rule that moves it
This niche has two rules pushing it and one making it more expensive. Pushing: the local-content commitments written into acts of State: Hombre Muerto Oeste declares that 95.34% of what it pays suppliers goes to local suppliers —the highest among the Catamarca projects that disclose it— and Fénix 60%, three times the regime's minimum. The key to collecting from that amount is the Re.P.E.M., the provincial registry of mining suppliers, which demands domicile in Catamarca with two years of seniority, half the partners local and 70% of the payroll from Catamarca — and admits a joint venture with a local partner as a shortcut. Making it more expensive: Ley Impositiva 5.927: providing mining support services pays between 3.0% and 4.8% of Turnover tax against 0.75% for extraction, plus Stamp tax on the purchase order.
See the underlying reading
The underlying policy that opens up this demand. It is the same inference declared by the rules and the program pillars pushing in this direction.
the RIGI promise is kept + without controls, supply responds to the boomSee the full legal grounds
Where the number comes from
the direct arithmetic gives ~USD 29 M/year, and it is published cut back to ~USD 23 M/year at the midpoint: Tres Quebradas' Phase 2 has had a published resolution since 29 July 2026, but the act approves it as a direct extraction plant —the route that needs the fewest ponds—, so the floor does not assume its pond surface is built. The full band is USD 6-60 M/year depending on which stages get built and at what price — over the whole 2026-2031 window, USD 30-300 M
See the calculation, the variables and how it was validated
The TAM is built from three variables you can watch from outside: how many square meters of pond have to be lined, how much each square meter costs with the roll delivered and welded, and over how many years it is executed. Change one and the number is recalculated.
A robustness check, by two routes that share no inputs. Top-down: Sal de Vida declares USD 62 M of ponds for 426 ha and USD 184 M for 902 ha, i.e. USD 14.6 and 20.4 per m² of the complete package of pond; our geosynthetics price would be 38-53% of that, which is the range a lined pond admits. Bottom-up: Tres Quebradas' earthmoving (1,325,600 m³ plus 2,103,000 m² of crust breaking, published quantities) costs USD 6.4-12.0 per m², and added to the geosynthetics gives USD 11.5-23.1 per m², which brackets the first. Both routes close.
The number rests on a few variables. The formula shows how it moves when each one changes; and each variable carries its freshness seal — how often it is worth revisiting. estim
This is the niche with the best-measured demand in the whole portfolio, and not because we estimated it: the contractor itself publishes the quantities down to the square meter for the two Tres Quebradas pond stages —2,040,000 m² of geomembrane executed and 1,788,000 contracted—, and we reopened those project data sheets to confirm them. The surface still to be built comes from Sal de Vida's technical report and from Hombre Muerto Oeste's permit. What does not exist is a public price for geomembrane installed on a high-altitude mining project: there we use an explicit assumption and cross-check it against the pond capex Sal de Vida declares in its report (USD 246 M) and against the earthmoving cost that can be calculated from Tres Quebradas' real quantities. The two routes, which share no inputs, give the same order of magnitude. The annual total is our own estimate and we say so.
Coverage: the category map of CAPPROMIN, the provincial mining suppliers chamber (19 categories and 123 memberships, cut off in 2023), the roll of CASEMICA, the second chamber (195 members as of 2 Oct 2026), and the Salta chamber's directory, where the four installers serving these salars are · Oct 3, 2026 · not reviewed: the Re.P.E.M., which is the mandatory provincial registry, publishes the total number of registrants but not the list of names; and the contractors do not publish who holds the membrane subcontract for each pond package
How to cite this figure: Despegue (2026). Lithium pond geosynthetics: certified installation, seam CQC and harvesting without damaging the liner (Catamarca) · Catamarca. despegueargentina.com/en/catamarca/geosinteticos-piletas-litio · terms of use
Neighbouring marketsOne market in the same group, from USD 4 to USD 18 M a year
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