Replace 'Manufacturing-Ready' With Demand Envelopes That Sort Your Pursuits

Every director reading this has spent a quarter on a project the city was never configured to win. The work is not trivial: pulling utility data, scheduling the community college, briefing the mayor, walking an incentive package through council, assembling a response that looks competitive in a binder. Then the project lands somewhere else. The site selector who read the response now has a data point about the gap between what the city claimed and what it could document. And the staff hours that went into it were hours not spent on an opportunity the infrastructure actually fits.

The site is rarely the problem. The undifferentiated claim is. A city that calls itself "manufacturing-ready" pursues whatever manufacturing opportunity appears, because nothing in its framework distinguishes the ones it can win from the ones it cannot.

That phrase is an expensive one to carry. It reads as a credential and operates as permission to chase everything and prepare for nothing. A site selector working through 15 responses in an afternoon — with utility and infrastructure capacity ranking as the No. 1 elimination factor at 61% in Guild/DCI's 2026 State of Site Selection Pulse Check — can tell within a few pages whether a city has tested its assets against a specific sector's requirements.

Same site, different verdict

Manufacturing subsectors impose operating requirements that separate by orders of magnitude, not percentages. The same substation and the same POTW produce a clear match for one sector and a disqualification for another.

The DOE Industrial Assessment Center database makes the spread visible. Three precision machine shops assessed in 2026 drew 82–244 kW of average billed monthly electric demand and, where reported, about 559 gallons per day of water. A regional brewery assessed in 2021 drew 481 kW and used roughly 35,600 GPD, with wastewater carrying BOD5 concentrations of 1,500–4,500 mg/L. Two resin-manufacturing plants assessed in 2025–2026 drew 810–1,263 kW and consumed 36,000–97,000 GPD.

Consider two city profiles that represent common tier-3 positions.

The 2 MW city is a strong match for the machine shop. It is a partial match for the brewery on power and water volume and likely disqualified on wastewater loading until it builds a pretreatment program. It is a partial match for the smaller observed resin plants on power and disqualified on water and wastewater. The 600 kW city matches the machine shop, is disqualified for the brewery on wastewater chemistry, and is disqualified for resin production on power, water, and site scale.

Neither city changed anything about its assets between those three readings. The sorting came entirely from the sector profile, which is the sorting that "manufacturing-ready" prevents a city from doing.

Five dimensions of a demand envelope

A demand envelope is a sector-specific profile of the operating requirements a project in that sector imposes on a host site. Five dimensions carry the weight.

Electric load range. Not annual consumption but billed demand or anticipated peak — the number that determines service class, delivery voltage, and whether utility infrastructure work is required. Under Dominion Energy Virginia's 2026 tariffs, crossing from 244 kW to 810 kW moves a customer from intermediate general service (30–500 kW) to the GS-3/GS-4 schedules at 500 kW and above. The rate structure changes, the delivery voltage may change, and the conversation with the utility changes. Rate-class breaks at similar thresholds are standard across IOU tariff structures. The specific kW cutoffs vary; the structural consequence does not, which is that a modest demand increase can change the service class and the infrastructure required to serve it.

Water and wastewater profile. Volume in GPD, and also discharge chemistry: BOD, TSS, pH, fats/oils/grease, temperature, metals, categorical-discharge status under EPA rules. Volume determines whether the POTW has headroom. Chemistry determines whether the POTW can accept the discharge at all, or whether the prospect has to build pretreatment infrastructure to get there. The wastewater screening teardown in Issue #1 covers the proof artifacts for this dimension.

Natural gas requirements. Annual volume matters less than peak-hour flow and required pressure. A food plant running steam boilers and a machine shop using gas for space heating are not the same gas customer. Where gas is incidental or absent, as in most plastics fabrication, that fact is itself a useful sorting result.

Occupation mix by SOC code. Not a headcount. A specific distribution of occupations that varies materially by sector. Detailed below.

Site and logistics specifications. Minimum building area, clear height, floor load, equipment foundations, crane requirements, outdoor storage, truck dock geometry, rail access, dominant freight mode, expansion room. A Clackamas County industrial land study treated these as independent variables in its 2014 development matrix and warned explicitly that "utility demands can vary wildly within these industry clusters."

The envelope does not predict what a specific project will require. It establishes the range within which a project in that sector will fall, based on observed facility data and published engineering references. Ranges that wide still disqualify cities, which is the point.

Four calibration envelopes

These profiles draw on DOE assessment records from 2023–2026 and EIA's 2022 Manufacturing Energy Consumption Survey. They are calibration cases. Actual project requirements depend on product, throughput, process technology, and equipment vintage.

Precision CNC machining (two-shift operation)

Three assessed shops ranged from 7,500 to 30,600 square feet with 18–26 employees. Electric demand: 82–244 kW average billed monthly. Gas: 240–362 MMBtu annually where reported, or none. Gas here is space heating and occasional process heat, not a primary energy input. Water: roughly 559 GPD in the one plant that disclosed it. Process requirements include three-phase power, compressed-air capacity, coolant and oily-waste management, equipment foundations, and truck access. Wastewater, where it exists, falls under EPA's Metal Products and Machinery effluent category — oil and grease, TSS, incidental metals — though conservation practices can produce very low or zero process discharge.

Logistics are LTL and parcel-dominant, with occasional flatbed for raw bar stock or plate. Rail is not a typical requirement. A city without rail is not disqualified from this envelope on that basis.

This is the lightest infrastructure envelope of the four. Both city profiles match it on power, water, and site scale. The competitive question for machining sits mostly outside infrastructure, in the qualification clock: customer PPAP timelines running 14–22 weeks per part family in automotive, or AS9100 certification at 18–30 months, both of which attach to the facility rather than the city.

Wet-process food or beverage production

The observed range is wide. A beef-jerky plant: 99,000 square feet, 200 employees, 232 kW electric demand, roughly 14,000 GPD water use and discharge. A regional brewery: 80,000 square feet, 481 kW, roughly 35,600 GPD. A carbonated-beverage bottling plant: 190,000 square feet, enough annual electricity to imply a continuous mean above 1 MW, roughly 191,000 GPD of water.

Wastewater chemistry is the discriminating dimension. Brewery effluent carries BOD5 of 1,500–4,500 mg/L in routine operation, with pH swings from below 3 to above 10. Rhode Island's official guidance reports TSS from 3,000 to more than 15,000 mg/L, and abnormal batch disposal can push BOD5 to 35,000–55,000 mg/L. A POTW with adequate volume headroom may still lack the treatment capacity to accept that loading without pretreatment the prospect has to build.

Gas consumption is material — 12,700–19,200 MMBtu annually in the observed jerky and brewery cases — because DOE reports that natural gas supplies 34% to 73% of onsite energy across most food subsectors, driven by steam, cooking, and sanitation hot water. Peak-hour demand and required pressure, not annual volume, are the specifications the gas utility needs to answer.

Logistics involve refrigerated outbound staging, bulk ingredient receiving by truck or rail tanker at larger operations, and time-sensitive cold-chain distribution. A city targeting this envelope without refrigerated dock infrastructure or proximity to cold-chain carriers has a logistics gap that power and water cannot compensate for.

The 2 MW city has the power for the jerky plant and the regional brewery, and its 200,000 GPD of POTW headroom covers the volume in those cases. Without an industrial pretreatment program, it still cannot accept brewery-strength BOD5 loading, and establishing one is a capital and regulatory project rather than an administrative step. The 600 kW city is disqualified for the brewery on power and for all wet-process food on wastewater chemistry. Wastewater compatibility is the first test in this envelope, not the last.

Plastics fabrication versus resin production

"Plastics" is at least two sectors whose water requirements differ by two orders of magnitude.

A plastics-products plant (injection molding, extrusion): 42,080 square feet, 461 kW electric demand, 234 MMBtu annual gas, roughly 375 GPD water. A polymer-rods plant: 23,000 square feet, 257 kW, 140 MMBtu gas. These are electric-process operations. Gas is incidental. The requirement set is chillers, compressed air, resin storage, dust and fire controls. Logistics are truck-based: pellet or granule delivery inbound, finished goods outbound by LTL or truckload.

Two resin-manufacturing plants: 200,000–210,000 square feet, 810–1,263 kW electric demand, 78,500–161,700 MMBtu annual gas, 36,000–97,000 GPD water. EIA's national average for resin manufacturing (NAICS 325211) implies a continuous mean load of 4.32 MW per establishment, roughly four to five times the observed assessment cases, which skew smaller. Resin production requires bulk liquid or railcar feedstock receiving, process steam, chemical handling, and wastewater characterization before the POTW will issue a preliminary determination. Outbound may include hazmat-classified shipments.

The 600 kW city matches plastics fabrication on power and water, and its 5-acre site with spec building could accommodate the smaller observed cases. It would not register as a candidate for resin production. The 2 MW city matches plastics fabrication easily and holds a partial match for the smaller resin plants on electric demand, but 200,000 GPD of POTW headroom is marginal against 36,000–97,000 GPD of consumption, and the chemistry question stays unresolved until the POTW evaluates the specific discharge. Its Class II rail could serve bulk feedstock receiving if the spur alignment works. A city pursuing "a plastics opportunity" without specifying which kind will prepare for the wrong infrastructure conversation.

Light metal fabrication or stamping

A 68,000-square-foot stamping plant with 65 employees drew about 499 kW of average billed monthly demand. A 425,278-square-foot automotive-seat-frame stamping plant with 625 employees drew about 1.79 MW. The smaller plant reported no gas or water stream. The larger used roughly 5,320 MMBtu of gas annually and about 3,600 GPD of water.

Process requirements include press foundations, power quality and motor-start conditions, compressed air, welding ventilation, crane and material-flow requirements, coil or stock storage, and truck turning geometry. Large presses impose transient loads that matter to the utility even when average demand looks moderate. Inbound logistics typically involve flatbed delivery of steel coil or sheet, which are heavy and dimensionally constrained and require adequate access and unloading infrastructure. If the operation includes surface treatment — plating, coating, anodizing — the environmental gate structure changes, adding categorical discharge requirements under 40 CFR Part 433 and potentially air-permit review.

The 600 kW city matches the smaller stamping case on power with no margin for growth. The 2 MW city matches both observed cases on electric demand, though the 1.79 MW automotive plant would consume nearly all available substation capacity, leaving open whether the utility can deliver that load at the required power quality, with motor-start transients, on existing infrastructure. A mock-RFI exercise surfaces that question before a live response forces it.

Occupation mix by SOC code

A 500-job project announcement is not a workforce specification. The BLS National Employment Matrix shows why.

Applying national staffing patterns to a hypothetical 500-job facility in two sectors:

Different occupations, different credentials, different pipeline sources. A community college machining program does not produce food batchmakers. The 600 kW city, with 30 annual completions in general manufacturing technology, faces one gap against a machining envelope and a different gap against a food-processing envelope, and both are specific enough to quantify once the SOC mix is known. The workforce answer gets tested against that mix, not against a generic manufacturing headcount. The number that matters is net availability — completions minus incumbent employer absorption — which, as the workforce commitment framework in Issue #2 details, is structurally undocumented in most labor sheds.

Running the mock-RFI

The envelope becomes operational when the director runs it as a simulated RFI.

Select two or three envelopes covering sectors the city has identified as targets. For each, assemble the response coalition: the utility, the POTW, the site-control party, the workforce provider, the permitting authority, and any state partner whose program would be part of the package. The counterparty map from Issue #2 identifies these parties. The evidence-state framework from Issue #3 grades the quality of what they send back.

Then ask each counterparty to respond to the envelope as though it arrived from a real client. Can the utility deliver the load range at the available site, and what document says so? Can the POTW accept the discharge profile, and has it issued a preliminary determination or only a verbal indication over the phone? Can the workforce provider document completions in the required SOC codes, and what is net availability after incumbent absorption?

The 2 MW city running a food-processing envelope would learn that its POTW has never evaluated high-BOD industrial discharge and cannot produce even a preliminary compatibility letter without a six-month study. Nothing surfaces that gap until the envelope forces the question. The cost of finding it in a mock exercise is a few phone calls; the cost of finding it in a live response is the project and some portion of the relationship with the consultant who asked. The same city running a machining envelope would find its coalition can produce documented answers on every dimension within days — a signal that machining is a sector it can pursue fast and with confidence.

The exercise also measures response latency: how many days to get a current, authorized, site-specific answer from each counterparty. If the utility needs three weeks to confirm available capacity and the response window is ten business days, preparation on the other dimensions does not solve the problem. AI pre-screening has compressed initial site identification to 24–48 hours in many searches. The clock starts faster than it used to.

Partial matches and gap assessment

Most envelope tests will return partial matches. The city meets some requirements and falls short on others. What matters is whether the gaps are bounded or structural.

A bounded gap has a known cost, a known timeline, and an identified funding path. The substation has 800 kW available, the envelope calls for 1.2 MW, and the utility has provided a preliminary engineering estimate of $340,000 and 14 months for the upgrade. That can be presented to a site selector as a conditional path with documented parameters.

A structural gap cannot close inside the project's decision timeline. The POTW lacks the treatment technology for the sector's discharge chemistry, and a capacity expansion would require a capital project the city has not funded, designed, or permitted.

Partial matches invite optimistic narration: describing the gap in language that minimizes it, omitting the timeline, presenting a funding application as though it were an award. A partial match documented with an honest gap assessment and a credible closure path is a stronger competitive position than a claimed full match that comes apart in due diligence. Selectors remember the second kind.

Documenting the decision not to pursue

The most useful output of the envelope exercise is often the documented decision not to pursue a sector.

Directors face political pressure to chase every visible opportunity. A mayor reads about a food-processing expansion in a neighboring state and wants to know why the city isn't competing. A board member returns from a conference on advanced manufacturing and wants to know what the city is doing about it. Without a framework, the director either pursues the opportunity and burns resources on a likely loss, or declines without documentation, which reads as passivity.

The envelope supports a structured non-pursuit record. It names the sector and identifies the disqualifying dimension: the wastewater chemistry the POTW cannot accept, the load the substation cannot deliver, the SOC codes the labor shed cannot supply in volume. It states whether the gap is closable with investment and over what timeline, or whether it is structural, and it names the sectors where the city's assets do produce a match or a closable partial match.

A city that can show a site selector three demand envelopes it has tested and prepared for, with documented asset matches, honest gap assessments, and pre-authorized response paths, has replaced an unverifiable claim with something a screen can check in the fifteen minutes it gets.