The call uncovered a real reason to investigate, but it did not prove a uniform three-foot correction. The decisive missing item is a sealed, current crosswalk tying the project benchmark, finished floor, FEMA flood elevations, and County requirements to one datum.
Superseded architectural R2 expressly used NGS mark BL1169 at 121.76 ft NAVD88. NGS now suppresses that mark’s orthometric height. NGS suppressed almost all southeast-Texas NAVD88 heights in 2021 because vertical land motion made many stale. USGS reports about 2.5 ft of subsidence in The Woodlands through 2021.
No recovered directive, sealed survey, raw observation, benchmark ID, datum, epoch, geoid model, or closure proves a uniform 2.98–3.00 ft correction at Lot 4. A useful local project datum is not inherently wrong; the failure is using it as if it were current NAVD88 without a documented tie.
The effective parcel intersects shaded Zone X and Zone AE. Shaded X is horizontally within the mapped 0.2%-annual-chance hazard. The floor may be vertically above the modeled 0.2% water surface, but that remains conditional on a common datum and a site-specific professional determination.
Zone AE static BFE, NAVD88, effective NFHL.
NAVD88 near the project reach; graph reading, not a certified site value.
Finished floor; vertical datum not stated.
Residence FF, NAVD88 / 2001 adjustment; 0.3 ft conflict with R3.
The correct response is not to choose 133.5 or 134.5 from the call. It is to force every professional and reviewing authority onto the same coordinate/elevation control and then make a documented resilience decision.
The Plaud share yielded a complete 93-segment machine transcript. Speaker 3—very likely Stephen—reported experience from another project. His statements are evidence of a warning, not sealed evidence of Lot 4’s elevation.
| Time | Claim | Audit |
|---|---|---|
| 01:28–02:26 | Woodlands monuments no longer exist; island houses must follow its control; FF 133.5 is at/above the 500-year level. | Partly unresolved Legacy control concerns are credible. The universal requirement, authority, and site flood comparison were not produced. |
| 06:14–07:11 | 130.96 local equals 127.98 “true,” a 2.98-ft delta. | Arithmetic only 130.96−127.98=2.98, but another project’s points cannot be transferred to Lot 4. |
| 10:56–11:34 | 133.5 local equals 130.5 true, “basically” the 500-year level; all homes are 133.5 minimum. | Not verified Effective FIS graph is about 130.0–130.2 in the reach. No universal as-built FFE evidence was found. |
| 12:09–13:59 | Another project is 136.85 local / 133.85 true, “3.15 ft” above 500-year. | Internal mismatch 133.85−130.5=3.35, not 3.15. |
| 13:59–15:59 | Raise Lot 4 to 134.5; structural can adapt beams; County is easy. | Option, not design Raising a floor is civil, structural, architectural, utility, private-review, and permit work—not a field adjustment. |
| 23:20–24:09 | Reviewers may check form/top-of-floor and overall height. | Directionally supported Project guidelines require pre-concrete and final survey/inspection records. |
| 26:43–31:30 | Team asks why care if above 500-year; discusses civil/structural notification and benchmark at front. | Prudent question The correct next move is a common-datum professional reconciliation, not acceptance of the call’s answer. |
The stored transcript preserves Plaud wording, labels, gaps, and recognition errors. Speaker identities are inferred: Speaker 4 is very likely Kanti; Speaker 1 likely Murat; Speaker 3 very likely Stephen.
Plaud public share
Displayed 2026-07-31 15:29:56 · 31m 33s · file ID 520fac…9022.
Preserved Markdown source retained in the local project record; not published.
The record contains several elevation “languages.” Numbers that look similar cannot be subtracted safely until a surveyor identifies the reference surface, realization/adjustment, observation epoch, geoid model, and point-to-point tie.
R2 cited BL1169 / R 88 at 121.76 ft NAVD88. The current NGS datasheet marks the NAVD88 orthometric height “NOT PUB” and flags suspected vertical motion. The suppressed historic value is exactly 121.76 ft.
The County FIS says its NGVD29→NAVD88 conversion is only +0.007 ft. At BL1169 the superseded NGVD29 and NAVD88 heights differ by about 0.01 ft. A three-foot issue points to stale realization, subsidence, assumed/local datum, or control error—not the datum names alone.
Continuity: plats, roads, drainage, utility inverts, and decades of approvals can share a local network. Relative slopes may remain internally useful even when absolute heights drift. That administrative benefit does not authorize mixing the local network with a current regulatory flood datum.
Answer: not yet verified. Horizontally, the address/footprint appears in effective shaded Zone X and a lakeward strip of the parcel intersects Zone AE. Vertically, 133.5 could provide substantial margin—or almost none—depending on its datum. A shaded-X location is not “outside the 500-year floodplain”; it is the mapped moderate-hazard area.
| Scenario | Converted floor | Margin above effective BFE 128 | Margin above FIS 0.2% ≈130.0–130.2 | Meaning |
|---|---|---|---|---|
| Civil 133.2 is valid NAVD88 | 133.2 NAVD88 | +5.2 ft | +3.0 to +3.2 ft | Comfortable modeled vertical margin; still reconcile the 0.3-ft plan conflict and exact site WSEL. |
| Architectural 133.5 is valid NAVD88 | 133.5 NAVD88 | +5.5 ft | +3.3 to +3.5 ft | Supports the practical conclusion, but the R3 sheet does not disclose the datum. |
| Call’s −2.98-ft hypothesis | 130.52 NAVD88 | +2.52 ft | +0.32 to +0.52 ft | Meets a BFE+2 threshold by only ~0.52 ft if the County trigger applies; little 0.2% freeboard. |
| 134.5 local under same hypothesis | 131.52 NAVD88 | +3.52 ft | +1.32 to +1.52 ft | A resilience option, not a recommendation until height, structure, drainage, utilities, and approvals are modeled. |
The call also used an asserted 130.5-ft 0.2% WSEL. Against 130.5, the four vertical margins above become +2.7, +3.0, about 0.0, and +1.0 ft respectively. FEMA does not tabulate 130.5 for the site; the profile graph near the reach reads closer to 130.0–130.2. A PE must select the correct station/model.
Email search found a structural REV 4 issued by Dunaway on 23 July 2026. The local “Current_Drawings” folder still contains structural REV 2 and architectural R3. REV4 does not state the project FFE or datum, so it cannot close this issue.
| Document | What it says | Finding / action |
|---|---|---|
| Architectural R3 23 Jan 2026 | F.F. 133.5; brass disk 130.95; TBM 129.69; datum absent. | Latest architectural set found. Tie all points to current NAVD88 and reconcile with civil. |
| Approved civil C1.0 10 Sep 2025 | Residence FF 133.2; garages 132.5; TBM 129.69; NAVD88 / 2001 adjustment; says shaded X. | 0.3-ft FFE conflict; flood-zone note is incomplete because effective parcel also intersects AE. |
| Structural REV 2 local current folder | Frozen void-box/helical-pile structural design under prior approved controls. | Existing internal guidance says REV2 controls; preserve unless formally superseded. |
| Structural REV 4 email 23 Jul 2026 | Issued after Keystone/Dunaway grade-beam and detail clarifications; no FFE/datum callout. | Latest available, not automatically controlling. Ultimate/EOR/Keystone must issue written document-control direction and updated IFC register. |
| Structural REV 3 | Materially changed foundation assembly to select-fill slab-on-grade. | Not interchangeable with REV2; do not claim REV2 and REV3 identical. |
| Survey R1 in Current_Drawings | 63 Aria Isle, Lot 11—not 25 Aria/Lot 4; brass disk 130.95; no vertical datum. | Wrong-lot survey cannot support Lot 4 elevation control. Remove from active IFC use or watermark “reference only / wrong lot.” |
| Superseded architectural R2 | BL1169 121.76 NAVD88; TBM 127.56; natural grades about 2.13 ft below R3. | Demonstrates provenance break; BL1169 height is now suppressed by NGS. |
| County permit SP-0055704-26 | Ultimate as nontransferable permittee; zones AE/X shaded; 100-ft / BFE+2 condition. | Ultimate must obtain written County determination and any supplements before a changed pour. |
| KGW dirtwork contract | Rough grade about 132, 18 in below top slab 133.5. | Construction allocation only; not an elevation certification or flood determination. |
REV4 email: Open Archiver ID 34ef5426-8459-4ae9-b813-4b13095ea8a8, from JZimmermann@dunaway, subject thread issuing “REV 4” after 15 July grade-beam/detail clarifications.
Final architectural source: Open Archiver ID 90055fa1-83fa-4671-9b9f-3bef3829af15; R3, 32 pages, issued 23 Jan 2026.
HOA approved resubmittal: 9 Mar 2026 approval forwarded 17 Mar; local package includes the civil sheet described above.
REV4, architectural R3, structural REV2, and the full HOA package remain in the local project record; the source files are not published here.
Only 25 Aria has a defensible numeric proposed FFE in the records found. No public, sealed as-built FFE was found for the surrounding homes. Spot grades are terrain, not floor elevations; the call’s “all houses are at least 133.5” is not a substitute.
If the embedded map does not load, open it in a new tab. Official MCAD parcel polygons provide geometry/status; FEMA supplies flood polygons. Map labels do not infer FFEs.
| Address / lot | Defensible FFE | Other elevation evidence | Datum | Use |
|---|---|---|---|---|
| 25 Aria · Lot 4 | Proposed 133.5 | R3 brass disk 130.95; civil FF 133.2 | R3 unresolved; civil NAVD88 | Subject of required crosswalk. |
| 29 Aria · Lot 5 vacant | Not found | Existing grades ~132.0–132.3 | NGVD29, 1964 Adjustment; TC-38 143.88 | Terrain only; never compare as floor. |
| 63 Aria · Lot 11 built 2025 | Not found | Existing grades ~131.7–132.1; brass disk 130.95 | Vertical datum absent | Wrong-lot survey currently in project folder. |
| 72 Aria · Lot 14 vacant | Not found | Existing grades ~131.5–132.2 | NGVD29, 1964 Adjustment; TC-38 143.88 | Terrain only. |
| Other built island homes | Not found | MCAD confirms construction/year for 15, 30, 34, 38, 42, 46, 49, 50, 54, 55, 63, 67, 68 Aria. | Unknown | Request County/owner ECs or sealed as-builts; do not estimate from LiDAR. |
Developer-posted Lot 5 and Lot 14 surveys use TC-38 = 143.88 ft, NGVD29 1964 Adjustment. The recorded plat identifies a brass disk stamped “ESL-16 R1,” elevation 134.92, printed “NAVD 29, 64 ADJ.” This verifies legacy control language; it does not tie R3’s 130.95 disk to current NAVD88.
Ask Montgomery County for any public elevation certificates/form surveys by address or permit, ask the private reviewer/developer for accepted slab-height surveys, and use owner-provided as-builts. A Texas RPLS can also survey visible floors with permission. Label every value by source, date, datum, and certification status.
| Party | Current role | Elevation/flood responsibility now |
|---|---|---|
| Arjun Shiva Investments LP | Owner / title holder | Approves risk/cost choices; receives property-level consequences; ensures financing/insurance/disclosure decisions are informed. County noncompliance can affect the property. |
| Ultimate Homes USA, LLC | GC and County permittee | Controls hold/release, plan distribution, County submissions/supplements, inspection/EC sequencing, field compliance, and trade coordination. |
| REJAK, LLC | Owner-side administrator; direct counterparty where named | Coordinates within its contracts, preserves records, routes owner decisions, and avoids purporting to bind Owner or Ultimate without authority. |
| Kanti / Shanti / Murat | Individuals with project/consultant communications or contracts | State capacity; route notices through the actual contracting client. Dunaway’s agreement is reportedly with Kanti/Shanti personally; STSA proposal is signed/invoiced to Murat personally. |
| RPLS / civil / structural / architect | Licensed design/measurement professionals within scope | Each owns a different question. Do not let a structural answer substitute for datum/flood/drainage work or an RPLS measurement substitute for civil design. |
Yes: tell civil and structural immediately, in writing. But a “second civil” alone is incomplete. Hire an independent Texas RPLS for the measurement/control question and an independent floodplain civil PE familiar with Montgomery County for the regulatory/hydraulic/drainage question. Keep the structural EOR responsible for foundation consequences.
No evidence supports the call’s theory that the system was knowingly chosen to sell flood-prone property.
Legal protection comes from acting reasonably after receiving the warning: preserve evidence, notify the right parties neutrally, obtain licensed determinations, comply with permit/private approvals, and keep one traceable construction record. It does not come from an owner waiver or from repeating an accepted local number after learning it may be incomparable.
SUBJECT: 25 Aria Isle — potential vertical-control discrepancy; request for sealed reconciliation During a 31 July 2026 project call, the team received an unverified report that legacy/local elevation control used for Aria Isle may differ materially from current geodetic elevation control. Our current records also show: (1) architectural R3 F.F. 133.5 with no stated vertical datum; (2) approved civil C1.0 Residence FF 133.2 on NAVD88/2001 adjustment; (3) a wrong-lot survey in the active folder; (4) effective FEMA AE and shaded-X mapping on Lot 4; and (5) a July 2026 in-review draft PMR affecting the parcel. This notice does not adopt the reported three-foot offset and does not accuse any party of error. It requests preservation of relevant records and a written, sealed, coordinated determination. Please provide, within your actual scope: the controlling benchmark(s), datum/adjustment/epoch/geoid, monument recovery and raw observation/closure information; a point-by-point crosswalk among project drawings and FEMA/County criteria; the controlling FFE; required permit/private-review supplements; and the structural, civil, drainage, utility, and architectural consequences of any change. Ultimate Homes USA, LLC, as GC/permittee, should identify the precise internal hold and release it only after receiving the required licensed determinations and written authority approvals. No party should rely on this draft as a stop-work order, design change, or authorization to proceed.
Draft only. It has not been sent. Counsel should tailor recipients, contractual notice methods, deadlines, reservations, and capacity language.
Which effective panel, FIS profile/station, LOMRs/LOMCs, and July 2026 draft PMR materials should the design team review?
What BFE and vertical datum govern Lot 4, and what survey/control evidence will County accept?
Does any portion of the proposed structure fall within 100 ft of the SFHA, and how exactly is the distance measured?
What minimum lowest-floor and machinery/equipment elevations apply?
Which form, under-construction, and final Elevation Certificate or as-built checkpoints are required?
Does 133.2, 133.5, or a contemplated 134.5 comply after tying the project benchmark to the governing datum?
Which structural/nonstructure permit supplements and private approvals must be complete before pouring?
Will County confirm permit status during this review, given the permit’s 180-day and “cessation over one week” wording?
The recent public signal supports investigating regional subsidence; it does not validate the Lot 4 conversion. July coverage says Houston-area communities, including The Woodlands, remain under active subsidence monitoring. Current professional guidance consistently stresses common-datum comparisons and repeatable control.
Regional subsidence is current, not historical trivia. Houston-area authorities explain why old benchmark networks needed releveling and later GPS monitoring.
The targeted 30-day run found little direct discussion of construction datum conflicts. Many high-engagement X/HN/GitHub hits were irrelevant; do not mistake volume for technical consensus.
Reddit, X, HN, GitHub, and web returned data. TikTok, Instagram, and YouTube failed with provider HTTP 402 in this run, so their silence cannot be interpreted as no discussion.
Open the shareable last30days brief · raw research retained in the local project record
Primary government data and sealed project records control the conclusions. Practitioner/social material is contextual only. Private project source files remain in the local project record and are not published on this site.
The full standalone transcript includes all 93 segments, speaker-recovery confidence, a line-by-line verification ledger, numeric audit, and follow-up evidence requests.
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