Borehole design charts for buried waste bodies: simulation data and code

Simulation data and code behind the manuscript "Probabilistic borehole-density requirements for detecting, confirming and delineating buried waste" (revised version, under review). Version 1.1 accompanies the revised manuscript. The design values are now safe requirements read directly from a fine density scan (the monotone fits of version 1.0 are superseded and kept only as a record); the deposit adds a two-phase benchmark (detection grid plus step-out drilling), a clipped-hull delineation rule with recall and over-coverage per rule, three readings of the site container, a third body population and a predictive check of each population against the published record, and the per-replication arrays of every configuration. 00_README.txt describes every file and what changed. Monte Carlo simulation of synthetic waste bodies under four borehole layouts (random, square grid, triangular grid, stratified random) quantifies the investigation density required to detect a buried body, to confirm it, and to delineate its footprint under three reconstruction rules. Requirements are expressed through the dimensionless density λ = ρA, the expected number of boreholes on a footprint of area A, and are converted into grid spacing in design charts. Site-scale scenarios are informed by a published dense investigation (136 boreholes, nine waste-positive). The deposit is a flat file set: simulation configurations with their random-number seeds, aggregated outputs, the design values with their ladder and bootstrap intervals, the verification-gate reports (exact binomial tests, 30 canonical ELIPGRID-PC cases, hypergeometric subsampling), the site geometry digitised from the source paper's figures with its quality-check metadata, and the manuscript and supplementary tables. The per-replication arrays are in one HDF5 file (per_replication_arrays.h5; group per run, subgroup per configuration, one dataset per recorded quantity). The archive msw_detection_code_and_runnable_tree.tar.gz contains the simulation engine together with the configurations and aggregated outputs at the paths the scripts expect, so the entire analysis layer re-runs in a few minutes on an ordinary computer and reproduces the deposited design values. The digitised site geometry derives from figures published by Zhang, X., Yin, A., Lu, Y., et al. (2025), "Integrated Investigation Approach for Solid Waste Landfill Hazards: A Case Study of Two Decommissioned Industrial Sites", Toxics 13(10):807 (CC BY); every such record carries a digitized_from_figure flag. Please cite that paper alongside this deposit.