diff --git a/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPartitionMaintenanceOptionsValidator.cs b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPartitionMaintenanceOptionsValidator.cs
new file mode 100644
index 00000000..0ad5373a
--- /dev/null
+++ b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPartitionMaintenanceOptionsValidator.cs
@@ -0,0 +1,25 @@
+using ZB.MOM.WW.Configuration;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+/// <summary>
+/// Validates <see cref="AuditLogPartitionMaintenanceOptions"/> at host startup
+/// (arch-review 08 round 2 NF4). A zero tick interval spins the maintenance
+/// hosted service; a zero look-ahead leaves <c>pf_AuditLog_Month</c> without a
+/// future monthly boundary, risking inserts into the unbounded tail partition.
+/// </summary>
+public sealed class AuditLogPartitionMaintenanceOptionsValidator
+    : OptionsValidatorBase<AuditLogPartitionMaintenanceOptions>
+{
+    /// <inheritdoc />
+    protected override void Validate(ValidationBuilder builder, AuditLogPartitionMaintenanceOptions options)
+    {
+        builder.RequireThat(options.IntervalSeconds > 0,
+            $"AuditLog:PartitionMaintenance:{nameof(AuditLogPartitionMaintenanceOptions.IntervalSeconds)} " +
+            $"({options.IntervalSeconds}) must be > 0.");
+
+        builder.RequireThat(options.LookaheadMonths > 0,
+            $"AuditLog:PartitionMaintenance:{nameof(AuditLogPartitionMaintenanceOptions.LookaheadMonths)} " +
+            $"({options.LookaheadMonths}) must be > 0.");
+    }
+}
diff --git a/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPurgeOptionsValidator.cs b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPurgeOptionsValidator.cs
new file mode 100644
index 00000000..da5bb659
--- /dev/null
+++ b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/AuditLogPurgeOptionsValidator.cs
@@ -0,0 +1,31 @@
+using ZB.MOM.WW.Configuration;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+/// <summary>
+/// Validates <see cref="AuditLogPurgeOptions"/> at host startup (arch-review 08
+/// round 2 NF4). The class self-clamps at resolve time, but a plainly-wrong
+/// config (zero cadence, zero batch, zero maintenance-command timeout) should
+/// still fail the boot so the operator learns immediately.
+/// <see cref="AuditLogPurgeOptions.IntervalOverride"/> is test-only (per the
+/// class remarks) and is deliberately not validated.
+/// </summary>
+public sealed class AuditLogPurgeOptionsValidator : OptionsValidatorBase<AuditLogPurgeOptions>
+{
+    /// <inheritdoc />
+    protected override void Validate(ValidationBuilder builder, AuditLogPurgeOptions options)
+    {
+        builder.RequireThat(options.IntervalHours > 0,
+            $"AuditLog:Purge:{nameof(AuditLogPurgeOptions.IntervalHours)} " +
+            $"({options.IntervalHours}) must be > 0.");
+
+        // Backing field for the documented "ChannelPurgeBatchSize" config key.
+        builder.RequireThat(options.ChannelPurgeBatchSizeConfigured > 0,
+            $"AuditLog:Purge:{nameof(AuditLogPurgeOptions.ChannelPurgeBatchSizeConfigured)} " +
+            $"(config key ChannelPurgeBatchSize = {options.ChannelPurgeBatchSizeConfigured}) must be > 0.");
+
+        builder.RequireThat(options.MaintenanceCommandTimeoutMinutes > 0,
+            $"AuditLog:Purge:{nameof(AuditLogPurgeOptions.MaintenanceCommandTimeoutMinutes)} " +
+            $"({options.MaintenanceCommandTimeoutMinutes}) must be > 0.");
+    }
+}
diff --git a/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/SiteAuditReconciliationOptionsValidator.cs b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/SiteAuditReconciliationOptionsValidator.cs
new file mode 100644
index 00000000..63bee720
--- /dev/null
+++ b/src/ZB.MOM.WW.ScadaBridge.AuditLog/Central/SiteAuditReconciliationOptionsValidator.cs
@@ -0,0 +1,31 @@
+using ZB.MOM.WW.Configuration;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+/// <summary>
+/// Validates <see cref="SiteAuditReconciliationOptions"/> at host startup
+/// (arch-review 08 round 2 NF4). A zero tick interval spins the reconciliation
+/// singleton, a zero batch pulls nothing per RPC, and a zero stalled-cycle
+/// threshold would fire the stalled signal on the first non-draining cycle.
+/// <see cref="SiteAuditReconciliationOptions.ReconciliationIntervalOverride"/>
+/// is test-only (per the class remarks) and is deliberately not validated.
+/// </summary>
+public sealed class SiteAuditReconciliationOptionsValidator
+    : OptionsValidatorBase<SiteAuditReconciliationOptions>
+{
+    /// <inheritdoc />
+    protected override void Validate(ValidationBuilder builder, SiteAuditReconciliationOptions options)
+    {
+        builder.RequireThat(options.ReconciliationIntervalSeconds > 0,
+            $"AuditLog:Reconciliation:{nameof(SiteAuditReconciliationOptions.ReconciliationIntervalSeconds)} " +
+            $"({options.ReconciliationIntervalSeconds}) must be > 0.");
+
+        builder.RequireThat(options.BatchSize > 0,
+            $"AuditLog:Reconciliation:{nameof(SiteAuditReconciliationOptions.BatchSize)} " +
+            $"({options.BatchSize}) must be > 0.");
+
+        builder.RequireThat(options.StalledAfterNonDrainingCycles > 0,
+            $"AuditLog:Reconciliation:{nameof(SiteAuditReconciliationOptions.StalledAfterNonDrainingCycles)} " +
+            $"({options.StalledAfterNonDrainingCycles}) must be > 0.");
+    }
+}
diff --git a/src/ZB.MOM.WW.ScadaBridge.AuditLog/ServiceCollectionExtensions.cs b/src/ZB.MOM.WW.ScadaBridge.AuditLog/ServiceCollectionExtensions.cs
index f1d68167..54497c4a 100644
--- a/src/ZB.MOM.WW.ScadaBridge.AuditLog/ServiceCollectionExtensions.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.AuditLog/ServiceCollectionExtensions.cs
@@ -368,8 +368,8 @@ public static class ServiceCollectionExtensions
         ArgumentNullException.ThrowIfNull(services);
         ArgumentNullException.ThrowIfNull(config);
 
-        services.AddOptions<AuditLogPartitionMaintenanceOptions>()
-            .Bind(config.GetSection(PartitionMaintenanceSectionName));
+        services.AddValidatedOptions<AuditLogPartitionMaintenanceOptions,
+            AuditLogPartitionMaintenanceOptionsValidator>(config, PartitionMaintenanceSectionName);
         services.AddHostedService<AuditLogPartitionMaintenanceService>();
 
         // I1 (review): bind the two central-singleton options HERE rather than in
@@ -385,10 +385,10 @@ public static class ServiceCollectionExtensions
         // 5 min reconciliation tick); production exposes IntervalHours /
         // ReconciliationIntervalSeconds only — the test-only *Override knobs are
         // not intended to be set from config (see the options classes' remarks).
-        services.AddOptions<AuditLogPurgeOptions>()
-            .Bind(config.GetSection(PurgeSectionName));
-        services.AddOptions<SiteAuditReconciliationOptions>()
-            .Bind(config.GetSection(ReconciliationSectionName));
+        services.AddValidatedOptions<AuditLogPurgeOptions, AuditLogPurgeOptionsValidator>(
+            config, PurgeSectionName);
+        services.AddValidatedOptions<SiteAuditReconciliationOptions, SiteAuditReconciliationOptionsValidator>(
+            config, ReconciliationSectionName);
 
         // Central health snapshot — a single object
         // that owns the CentralAuditWriteFailures + AuditRedactionFailure
diff --git a/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPartitionMaintenanceOptionsValidatorTests.cs b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPartitionMaintenanceOptionsValidatorTests.cs
new file mode 100644
index 00000000..2b45be34
--- /dev/null
+++ b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPartitionMaintenanceOptionsValidatorTests.cs
@@ -0,0 +1,41 @@
+using ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;
+
+/// <summary>
+/// Eager startup validation for <see cref="AuditLogPartitionMaintenanceOptions"/>
+/// (arch-review 08 round 2 NF4). A zero tick interval spins the maintenance
+/// hosted service; a zero look-ahead leaves the partition function without a
+/// future monthly boundary, risking inserts into the unbounded tail partition.
+/// </summary>
+public class AuditLogPartitionMaintenanceOptionsValidatorTests
+{
+    [Fact]
+    public void DefaultOptions_AreValid()
+    {
+        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
+        Assert.True(validator.Validate(null, new AuditLogPartitionMaintenanceOptions()).Succeeded);
+    }
+
+    [Fact]
+    public void ZeroIntervalSeconds_Fails()
+    {
+        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
+        var result = validator.Validate(null,
+            new AuditLogPartitionMaintenanceOptions { IntervalSeconds = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(AuditLogPartitionMaintenanceOptions.IntervalSeconds), StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void ZeroLookaheadMonths_Fails()
+    {
+        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
+        var result = validator.Validate(null,
+            new AuditLogPartitionMaintenanceOptions { LookaheadMonths = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(AuditLogPartitionMaintenanceOptions.LookaheadMonths), StringComparison.Ordinal));
+    }
+}
diff --git a/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPurgeOptionsValidatorTests.cs b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPurgeOptionsValidatorTests.cs
new file mode 100644
index 00000000..d2c05964
--- /dev/null
+++ b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/AuditLogPurgeOptionsValidatorTests.cs
@@ -0,0 +1,53 @@
+using ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;
+
+/// <summary>
+/// Eager startup validation for <see cref="AuditLogPurgeOptions"/>
+/// (arch-review 08 round 2 NF4). The class self-clamps at resolve time, but a
+/// plainly-wrong config (zero cadence, zero batch, zero command timeout) should
+/// still fail the boot so the operator learns immediately.
+/// <see cref="AuditLogPurgeOptions.IntervalOverride"/> is test-only and left
+/// unvalidated.
+/// </summary>
+public class AuditLogPurgeOptionsValidatorTests
+{
+    [Fact]
+    public void DefaultOptions_AreValid()
+    {
+        var validator = new AuditLogPurgeOptionsValidator();
+        Assert.True(validator.Validate(null, new AuditLogPurgeOptions()).Succeeded);
+    }
+
+    [Fact]
+    public void ZeroIntervalHours_Fails()
+    {
+        var validator = new AuditLogPurgeOptionsValidator();
+        var result = validator.Validate(null, new AuditLogPurgeOptions { IntervalHours = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(AuditLogPurgeOptions.IntervalHours), StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void ZeroChannelPurgeBatchSize_Fails()
+    {
+        var validator = new AuditLogPurgeOptionsValidator();
+        var result = validator.Validate(null,
+            new AuditLogPurgeOptions { ChannelPurgeBatchSizeConfigured = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(AuditLogPurgeOptions.ChannelPurgeBatchSizeConfigured), StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void ZeroMaintenanceCommandTimeout_Fails()
+    {
+        var validator = new AuditLogPurgeOptionsValidator();
+        var result = validator.Validate(null,
+            new AuditLogPurgeOptions { MaintenanceCommandTimeoutMinutes = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(AuditLogPurgeOptions.MaintenanceCommandTimeoutMinutes), StringComparison.Ordinal));
+    }
+}
diff --git a/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/SiteAuditReconciliationOptionsValidatorTests.cs b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/SiteAuditReconciliationOptionsValidatorTests.cs
new file mode 100644
index 00000000..4d333045
--- /dev/null
+++ b/tests/ZB.MOM.WW.ScadaBridge.AuditLog.Tests/Central/SiteAuditReconciliationOptionsValidatorTests.cs
@@ -0,0 +1,54 @@
+using ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;
+
+/// <summary>
+/// Eager startup validation for <see cref="SiteAuditReconciliationOptions"/>
+/// (arch-review 08 round 2 NF4). A zero tick interval spins the reconciliation
+/// singleton, a zero batch pulls nothing, and a zero stalled-cycle threshold
+/// would fire the stalled signal on the first non-draining cycle.
+/// <see cref="SiteAuditReconciliationOptions.ReconciliationIntervalOverride"/>
+/// is test-only and left unvalidated.
+/// </summary>
+public class SiteAuditReconciliationOptionsValidatorTests
+{
+    [Fact]
+    public void DefaultOptions_AreValid()
+    {
+        var validator = new SiteAuditReconciliationOptionsValidator();
+        Assert.True(validator.Validate(null, new SiteAuditReconciliationOptions()).Succeeded);
+    }
+
+    [Fact]
+    public void ZeroReconciliationInterval_Fails()
+    {
+        var validator = new SiteAuditReconciliationOptionsValidator();
+        var result = validator.Validate(null,
+            new SiteAuditReconciliationOptions { ReconciliationIntervalSeconds = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(SiteAuditReconciliationOptions.ReconciliationIntervalSeconds), StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void ZeroBatchSize_Fails()
+    {
+        var validator = new SiteAuditReconciliationOptionsValidator();
+        var result = validator.Validate(null,
+            new SiteAuditReconciliationOptions { BatchSize = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(SiteAuditReconciliationOptions.BatchSize), StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public void ZeroStalledCycles_Fails()
+    {
+        var validator = new SiteAuditReconciliationOptionsValidator();
+        var result = validator.Validate(null,
+            new SiteAuditReconciliationOptions { StalledAfterNonDrainingCycles = 0 });
+        Assert.False(result.Succeeded);
+        Assert.Contains(result.Failures!,
+            f => f.Contains(nameof(SiteAuditReconciliationOptions.StalledAfterNonDrainingCycles), StringComparison.Ordinal));
+    }
+}