York Durham Sewage System Forcemain Twinning Project (York Region Contract No. T-18-131)
Bibliographic record
Abstract
The York Durham Sewage System (YDSS) was originally built in the 1980s as a single forcemain by the Province of Ontario and its ownership was subsequently transferred to the Regional Municipality of York in the 1990s. Local sewer systems throughout the Town of Newmarket (located in York Region) connect to the YDSS which then conveys effluent to the Duffin Creek treatment plant located approximately 60 kilometers (km) to the south. In 2016, York Region’s water and wastewater master plan identified that the YDSS was reaching capacity in the Town of Newmarket and required an upgrade. The resulting forcemain twinning project included the addition of a secondary forcemain. This upgrade was challenging as the new forcemain had to be installed through a dense urban environment and a floodplain of the East Holland River which runs north to south through Newmarket. Microtunneling installation of the 5.5 km long forcemain through Newmarket required 11 river crossings, 3 railway crossings, numerous street crossings, and work within and below city parks. The forcemain was installed in two passes. For the first pass, full face slurry microtunnel boring machines (MTBM) were used to install precast microtunnel pipe (casing pipe), manufactured to CAN/CSA A257.2 (ASTM C76). For the second pass, AWWA C301(E) prestressed concrete cylinder pipe (PCCP) was used as the carrier pipe and was installed and grouted in place within the casing pipe.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.143 | 0.019 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".