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 metres. Tres Quebradas has already committed 3,828,000 m² of geomembrane plus as much again in geotextile across two stages —and the roll came from China—, Sal de Vida has another 902 hectares in its Stage 2 and Hombre Muerto Oeste another 250. 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 CAPPROMIN's registry «geomembranes» does not exist as a category —19 categories, 123 memberships— and the four specialized installers serving these salars are registered in the chamber of Salta. The only declared local supply in the category, GREENCAT, appears in ANOTHER chamber (CASEMICA) and still has no m² of lithium pond documented in its name. The market is not empty: it is served from the province next door.
The TAM is activity, not capturable loot, 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 metre by metre, plus liner integrity and harvesting supervision.
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 directs 95.34% of the investment amount to suppliers —the highest in the whole RIGI— 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: Tax Law 5927: 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. The ones below open in the reforms panel on the home page, with their status and primary source.
enablesRe.P.E.M.: Catamarca's mining local-content rule is a resolution, not a lawIt is the counter that turns the local-content commitment into a contract: with no Re.P.E.M. you do not collect from Hombre Muerto Oeste's 95.34% or Fénix's 60%. Its roots requirements (2 years of domicile, 50% local partners, 70% Catamarca payroll, semi-annual sworn statement) are a barrier for the outsider and an asset for whoever establishes today — and the joint venture with at least 50% local suppliers is the legal vehicle for entering without waiting the two years. The detail that defines this niche: in CAPPROMIN's registry «geomembranes» does not appear as a category, so the registry does not protect anyone yet —the only local member in the category is registered with CASEMICA, with no pond work in its name.see the reform →This market does not float on its own: concrete megaprojects drive it. These are the ones moving demand for this niche — each with its investment and status.
Stage 2 of Tres Quebradas: doubles capacity by adding 40,000 t/year of new output (all stages combined target 60,000-80,000 tpa, projected)…
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 →Who splits the market, where you get in, what pays and what could break 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, 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 is the only domestic contractor with a documented 'Geosynthetics CQC Supervisor' position prob LinkedIn: 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 in the whole RIGI (95.34%).
The other two members of CAPEMISA's geomembrane category. ALL IN sells installation AND supply (HDPE, LDPE, PVC) plus repair and environmental studies (clients: Mina Pirquitas, Mina Chinchillas, Mansfield, BSD Ingeniería); Geosintéticos Ing. y Obras sells pure installation (client: Minera Santa Cruz). 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 on its website. 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 self-declared, with no third-party certificate or named lithium project. 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 = 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 Law 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 as an offering. 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), of which 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 'S.I.G.S.A.' with the category 'environment, geosynthetics, lining' -- this niche already lists SIGSA as a Buenos Aires City firm, so its membership in the Catamarca chamber indicates local presence, not provincial origin. Still to close: GREENCAT's CUIT, locality and executed work.
Do not start by fighting for the roll against an importer bringing it from China tariff-free. Enter where the value cannot be put in a container: the welding and its certification are done on the pond, at 4,100 metres, with people you have to have up there.
The lowest-capital door: the geosynthetics sub-scope inside somebody else's package. Whoever wins a pond job is an earthmover —its published bill of quantities is cubic metres 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 nobody is selling: protected harvesting and liner 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.
With proven work, contest the roll — but without building a factory. There is already an Argentine extruder declaring HDPE geomembrane of up to 3 mm in 8-metre rolls and explicitly targeting the Lithium Triangle. The play is to homologate that roll (third-party certification, conformance testing, trial weld panel at −30 °C), stockpile it in Fiambalá or Antofagasta de la Sierra and sell it installed: that turns an import into a local purchase countable toward Hombre Muerto Oeste's 95.34% and Fénix's 60%.
~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 Milicic case, 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). Layer (a) enters the SAM only if the Argentine extruder is homologated: it would add USD 6-26 M/year, but it is a price fight against Chinese roll with no tariff. How the local content commitments play: HMW's 95.34% and Fénix's 60% ENLARGE the SAM because the operator needs an amount directed to suppliers and the installed liner is a large, easily attributable line item — but they are commitments on the investment amount, not quotas by category, with an availability valve and market conditions: mistaking them for guaranteed demand in this category is the classic error.
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.
When you get paid, and what blocks it
effect
The employment in this niche is measurable and it arrives EARLY: the pond is built before the plant produces.Crew per package: a 200 ha package lays 2 M m² of geomembrane plus 2 M m² of geotextile in 8 months, on the order of 10,000 m²/day of each layer; a geosynthetics crew deploys and welds 3,000-6,000 m²/day, so 2 to 4 simultaneous crews are needed = 50-100 direct jobs per package plus CQC technicians estim our own; extrapolated to the window's pipeline, 150-400 construction jobs estim.Trades by name: geomembrane installer; hot wedge and extrusion welder; seam CQC technician (pressurized air channel test, vacuum box, destructive peel/shear coupons with a field tensiometer); CQA inspector; bulldozer, motor grader and roller operator for the platform —the subgrade decides whether the liner lasts—; electronic leak detection technician; harvesting equipment operator with a liner-protection protocol.Why it is the right trade for this puna: it is learned in weeks to months, not in a degree, so it is the realistic entry door for Antofagasta de la Sierra (2,022 inhabitants, only 12 registered suppliers) and for Fiambalá/Tinogasta, where 3Q already declares 565 direct jobs with 80% from Catamarca prob; and the training rail exists and is measured: +43 industrial technical training courses with +600 attendees in Antofagasta de la Sierra verif and more than 70% of the participants in the 2017-2023 apprenticeship contracts hired permanently prob.For those with a degree, not just a trade: the CQC/CQA line is technician and engineer work —quality control plans, interpretation of destructive tests, as-built reports of panels and seams, integrity analysis backing the liner's service-life warranty—, and it is the part of the niche that a foreign EPCM signs off on today.Local linkages: since the roll is imported, the Catamarca linkage is service and logistics (stockpiling and a roll yard in Fiambalá or Antofagasta de la Sierra, handling with forklift and telehandler, heavy transport of dozens of trucks via the Paso San Francisco or RP 43, fuel, catering and accommodation for 50-100 people for 8 months); and if the Argentine roll is also homologated, the industrial prize moves to Rosario, not to Catamarca, and that has to be said plainly.What does not add up: the installation employment is temporary by design —8-month campaigns tied to the 2026-2031 window— and what remains is small: 20-40 permanent jobs across the whole province between harvesting, repair and integrity estim. And there is an environmental counterweight that is not glossed over: the pond is the container of the brine, and in March 2026 there was a Zijin-Liex spill into the Chaschuil river with a provincial fine. Liner integrity is not just a business: it is a condition of the whole industry's social license, and whoever sells 'zero leaks' is on the right side of that problem.
calculate it
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 (Coverfilm, 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 obvious name —«the mine»— is the wrong door in two of this niche's three layers. The money flows through three different channels, and confusing them means losing the tender before you quote:
At Tres Quebradas both pond stages were contracted by LIEX S.A. (Zijin) with the joint venture Lemiro Pablo Pietroboni + ITALCA + BMI, 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, SIGSA markets HDPE to GRI standards and offers the welding, and Coverfilm (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: the operator buys the fleet and harvests with its own people. 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. In the category there is already someone offering it —RM del Norte (Salta) sells leak control with leak-tightness testing— but from the neighbouring province.
It is not «what breaks it»: it is the dashboard for entering at the right moment. In geosynthetics the warning arrives months in advance, because the pond is built before the plant and the permit is published before the tender.
Every environmental permit and every RIGI resolution publishes hectares of pond before the works are tendered: it is the niche's leading indicator. And there is a cross-reading worth taking in full — Hombre Muerto Oeste has the highest local-content commitment in the whole RIGI (95.34% of the investment amount to suppliers) and it is precisely the one with 250 hectares of pond still to build.
Official Gazette (RIGI resolutions) + permits from Catamarca's Mining Ministry + the pond contractors' project data sheets, by event ↗Sal de Vida Stage 2 is 9.02 M m² = 38% of the volume ceiling, and it is a 'very preliminary' Class 4 estimate for years 3-40 of the mine plan, not sanctioned. It is the largest block and the most fragile: if the price does not cooperate, it does not get built and the TAM ceiling collapses on its own. The floor of the range already assumes it is not done.
3Q Phase 2 has RIGI approval from the Committee on Jul 14, 2026 but NO published resolution as of Jul 25, 2026: it is not a done deal. And HMW Phase 2 (250 ha of ponds) depends on Galan's financing, a company that raised USD 20 M to start 4 ktpa.
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. And the tariff does not protect the domestic producer because the input comes in with the exemption of Law 24,196 and of the RIGI thesis from the framework: I did not verify the NCM tariff heading.
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'. Catamarca is becoming the world's DLE cluster, and this niche lives off the evaporitic flowsheet: every new tonne that comes out through DLE is liner demand that is never born.
The 50/50 split of the disputed Hombre Muerto strip is voided once Congress settles the boundary prob. If the strip falls on Salta's side, work counted today as Catamarca's changes jurisdiction, and with it the Re.P.E.M. and the 2 years of roots the entrant paid for. It is a DOMICILE risk, not a demand risk.
The Mar-2024 injunction over the Río Los Patos sub-basin was lifted 5-2 in 2026 with the case open before the IACHR: the litigation did not close, it paused. And the Zijin-Liex brine spill into the Chaschuil river (Mar 25, 2026), with a Ministry fine, has already happened. The ponds are exactly the works being challenged: they are the container of the brine.
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. With 8-month schedules 'including winter' and penalties for delay, an entrant without a financial cushion goes bust: HDPE welding simply stops for temperature and for wind.
The TAM is built from three variables you can watch from outside: how many square metres of pond have to be lined, how much each square metre 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
Every figure is checked against its source before we publish it. Here we show what backs it — and where the verified data ends and our estimate begins.
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 metre 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.
8registered sources3official or agencies5of high reliabilityEvery data point on the site links to its source.
Get on board the takeoff
This week’s updates: the map of lithium pond geosynthetics: certified installation, seam CQC and harvesting without damaging the liner (Catamarca) and the niches opening up, related courses and new provinces as they launch. Free.