Case Study 2 — The Gas Main That Was Eleven Feet Away

The Fairmount Avenue Interceptor, and the Party With No Contract

Fairmount Avenue, Bellwether Energy, Northlight Communications, Kestrel, and everyone in this case are Tier-3 illustrative composites. The numbers are internally consistent and realistic. No real utility, agency, permit, or specification is quoted or paraphrased.

This is the job Del Ferraro's potholing rule came from. It cost him seven years of arguing about it in advance.

Setup

The project. Fairmount Avenue Sanitary Interceptor Replacement — $9,400,000, unit price, City of Rivermont Water Reclamation Department, 300 working days. Kestrel replaces 4,900 LF of an 1890s brick interceptor with 30-inch pipe at 16 to 22 feet of depth, down the centerline of a four-lane arterial with a fire station and a middle school on it. The road stays open, one lane each way.

The people. Del Ferraro, superintendent — seven years before Cottonwood Creek, on his second deep pipe crew. Teodoro "Teddy" Balcázar, project engineer. Wendell Frame, the City's resident engineer.

The item that matters. 30-inch sanitary sewer, 16 to 22 feet depth — 4,900 LF at $486/LF = $2,381,400. Trench excavation, shoring, dewatering, bedding, backfill, compaction and restoration are all incidental to the pipe item: everything the crew does all day lives inside that one number. The spread costs $14,600 per working day at a planned 48 LF per day; time-related overhead runs $3,850 per working day, with no pay item at all.

What the documents showed. Twenty-six utility crossings, from the City's record drawings and what the utility owners supplied during design. At station 28+40, Bellwether Energy's 12-inch steel high-pressure gas main was shown 11 feet north of the sewer centerline at 4.5 feet of cover — out of the way. Kestrel priced the crossing as a non-event. So did every other bidder.

What Happened

Day 41 — fourteen inches

The trench at station 28+40 is 19 feet deep and 8 feet wide, box in the hole. At 10:20 a.m. the operator, digging the next pull ahead of the box, felt the bucket touch something and stopped.

Fourteen inches below the teeth, running directly over the sewer centerline at 9.4 feet of depth, was a 12-inch coated steel gas main.

⚠️ The part of this case that is not about money. A struck high-pressure gas main beside a fire station and a middle school is not a schedule event. The operator stopped because he was digging the last two feet by feel rather than by production rate, in a corridor he had been told was clear. Every practice below exists so nobody's survival depends on an operator's touch on a joystick.

Del cleared the trench and did five things in forty minutes — the only part of the event he later said he got right the first time.

1. Stopped work in the reach. Nobody in or near the trench.
2. Called the one-call service for an emergency locate, and Bellwether's damage-prevention line — the number on the utility's own marker posts, not the customer service desk.
3. Documented before anything moved: photographs with a scale and station identifier in frame; survey shots on the main's crown tied to project control (9.4 feet deep, 2.1 feet south of the sewer centerline); a field book entry with time, names, and the record drawing's location written beside the measured one.
4. Sent written notice to Wendell Frame — station, time, plan location, measured location, work stopped, request to inspect before disturbance, rights reserved. No dollar figure, no argument.
5. Opened a cost code, before anyone knew whether there would be a claim.

Two days later, at station 29+10, the crew found a Northlight Communications fiber duct bank at 6.8 feet — on no drawing, in no record, and on no locate ticket.

Why a seven-foot clearance stopped the job

The main is not in the sewer's elevation — the invert is at 19.2 feet and the crown at about 16.6, so on a section drawing they miss each other by seven feet. The main is in the trench. It spans a nineteen-foot-deep excavation with nothing under it, no box can be set through it, and it is high-pressure steel Bellwether will not permit to be exposed unsupported or supported by anything it has not reviewed. The crew cannot advance one more foot until somebody decides what to do about a facility belonging to a company Kestrel has no contract with.

The redesign

Wendell convened everyone eight days later. The eight days are part of the case.

The City chose a hybrid: support in place at 28+40, and redesign the crossings at 34+10 and 39+80 to jack-and-bore, because by then it was clear the record drawings could not be trusted anywhere.

The delay, and what it cost

Fourteen working days in which the pipe crew could not work the affected reach — eight on the meeting and Bellwether's review, six on fabrication and installation. Del mitigated, moving the crew downstream for nine of the fourteen; that reach was shallower, the haul longer, and the crew remobilized twice, so it produced 36 LF per day instead of 48.

Eleven working days is what survived after resequencing. That is the number that moved the contract.

The Party With No Contract

Here is what does not appear in the Cottonwood Creek rock event at all. Bellwether Energy has no contract with Kestrel.

   City of Rivermont ──── prime contract ────►  KESTREL
        │   (schedule, liquidated damages,
        │    payment — the whole apparatus)
        │
        │  franchise agreement / right-of-way permit:
        │  general obligations, no dates, no damages
        │  running to the contractor
        ▼
   BELLWETHER ENERGY ────── nothing ────────►  KESTREL
                            (no schedule obligation, no
                             liquidated damages, no privity)

With a crew standing still, that means four things. Bellwether owes Kestrel nothing — not a date, not a response time, not a dollar; it is not late, because it never promised Kestrel anything to be late about. Kestrel cannot direct it or escalate to it; Del's calls reached a damage-prevention desk, then a regional engineer with forty jobs. Bellwether's constraints are real and nobody's fault — a nine-week engineering queue, an annual capital budget, and a shutdown window governed by heating season, which is a public-safety judgment, not obstruction. And Kestrel's only remedy runs against the City, through the prime contract's delay provisions.

Which is where the clause decides everything. Fairmount's special provisions said what many public contracts say: utility locations shown are record information and are not warranted; the contractor shall verify them; the City will use reasonable efforts to arrange relocations; and the contractor gets an extension of contract time but no additional compensation for utility-caused delay — except where a utility's actual location differs materially from the plans, in which case the differing site conditions clause applies. That exception is the whole negotiation.

This language varies enormously by agency and by state, and some states have statutes governing utility relocation in public rights-of-way. Read your clause before you bid an urban utility job: it decides whether a utility delay costs you time or money.

Who ultimately paid

Now follow the money out of the room.

Bellwether paid nothing to anyone. Its engineering review, its standby crew, and the relocation it performed the following year under its own capital program, it absorbed and recovered through its rate base. It was never a party to the negotiation and had no obligation to attend. The City's entire leverage over the company whose facility stopped the job was a franchise agreement and a phone call.

And the one party that was demonstrably wrong paid $18,000 — to the City. Northlight's duct bank sat under a permit requiring accurate record drawings; when no record turned out to exist, the City recovered the survey and redesign cost of the two bored crossings. Kestrel, which paid for that discovery in stopped crew days, never saw a dollar of it — because Kestrel had no relationship with Northlight either.

💡 The mechanism, stated plainly. In a building, every party that can hurt you is somewhere in your contract tree. In an urban right-of-way, the parties most likely to stop your job are outside it entirely — and your contract decides whether their behavior costs you time, money, or both. That is the risk allocation of the job, and it is usually decided in one paragraph of the special provisions that nobody reads on bid day.

The Four Practices That Reduce This Exposure

None prevents a wrong as-built. All four convert a work stoppage into a scheduled item with a date and an owner.

1. Subsurface utility engineering, at the right quality level. SUE is tiered — records research, then surface geophysics that designates a facility's horizontal position, then test holes that physically expose and survey it. Only the top tier gives you a number you can build to. Here, 26 crossings at roughly $1,900 each is $49,400, or 0.53 percent of contract, against a $253,000 event. It is worth most when the owner buys it during design, because then the designer moves the alignment and the conflict never becomes anybody's claim.

2. A test hole at every crossing, two weeks ahead of the crew. Del's rule: "Pothole every crossing on the critical reach two weeks ahead of the pipe crew. It costs about four hundred dollars a hole. A crew standing still costs about six thousand dollars a day." On Fairmount both numbers are worse — under pavement at depth a hole is nearer $650, so $16,900 for all 26, against a stopped crew at $14,600 a day. Two prevented stoppages pay for it four times over. Two weeks, not two days, so there is room to solve the problem; every crossing, not the suspicious ones; and survey each hole, because one not tied to control is a hole, not data.

3. A utility conflict matrix, built in preconstruction. The cheapest artifact in this case, and Kestrel did not have one. One row per crossing: station · owner, with a name and a number a human answers · facility type, size, material, pressure or voltage, active or abandoned · record source and date · record offset and depth · verified offset and depth, with test-hole date · conflict yes/no/unresolved · resolution · responsible party · committed date · status. Review it weekly with the schedule. It makes the unresolved rows visible weeks before the crew reaches them, and it records what each utility owner committed to and when — the only leverage you will ever have over a party with no contract with you.

4. Contract language on utility relocation responsibility and timing. Answer these before you bid, and price them. Who obtains relocation commitments, and when? Is a relocation schedule attached to the contract? Does it grant time only, or time and money — the sentence that decided $42,350 here? Is there a threshold of days before compensation begins? When a utility is materially mislocated, does the DSC clause reach it, or is subsurface utility information carved out of it entirely? Who pays for support in place, and for its design? How short is the notice period? All of it varies by agency and by state.

Discussion Questions

1. Kestrel absorbed $70,150; Bellwether, whose record was wrong, paid nothing. Argue both sides of whether that is unjust — then say what you would change in a bid, a contract, or a preconstruction process to make it come out differently.

2. The largest unrecovered item was $32,850 of lost production on the nine days Del mitigated — required, correct, and uncompensable. Design the documentation that would have made it provable.

3. Four delay days traced to a duct bank that appeared on no record at all, and Kestrel did not press it. Compare a facility shown in the wrong place with a facility shown nowhere. Which is the stronger claim, and why does the answer feel backwards?

4. Owner-performed SUE during design would have cost about $49,400 and might have eliminated the conflict. Why do owners under-invest in it, and what argument would persuade a public agency to fund it? Use the geotechnical baseline reasoning from §38.4.4.

5. A superintendent tells you $16,900 of potholing on a $9.4 million contract is money spent to find problems he might not have. Write the two sentences you would say to him — then the honest version of his position, because there are conditions under which he is right.

Your Turn

You are the project engineer on a $4.2 million municipal water main replacement: 6,800 LF of 12-inch main in an arterial right-of-way, unit price, 180 working days, 19 crossings, record drawings the City's engineer calls "mostly from the seventies." Your spread costs $9,800 per working day at 90 LF per day, and there is no SUE work in the contract.

1. Build the utility conflict matrix for all 19 crossings — plausible facilities and owners, every column filled honestly, including leaving the verified-location column blank, which is the point. Mark the five you would test-hole first, and say why.

2. Price the potholing program: cost per hole, holes, total, lead time, who performs it. State the exposure it buys down in stopped crew days at $9,800, and where it breaks even.

3. Write "the first hour" — a pocket-card procedure for the sixty minutes after an operator finds a facility that is not where the drawings say. Six steps or fewer. It must work when you are across town and the only people on site are an operator, a foreman, and a flagger.

Then write the two sentences you would say to the utility owner's regional engineer on the phone. No contract, no leverage, no way to escalate. Those two sentences are the entire toolkit, and they are harder than the three pages.