diff --git a/Persistence.API/Controllers/ChangeLogController.cs b/Persistence.API/Controllers/ChangeLogController.cs
index 08f059e..f65cbb1 100644
--- a/Persistence.API/Controllers/ChangeLogController.cs
+++ b/Persistence.API/Controllers/ChangeLogController.cs
@@ -146,8 +146,21 @@ public class ChangeLogController : ControllerBase, IChangeLogApi
         return Ok(result);
     }
 
+    [HttpGet("part")]
+    [ProducesResponseType(typeof(IEnumerable<DataWithWellDepthAndSectionDto>), (int)HttpStatusCode.OK)]
+    public async Task<IActionResult> GetPart(Guid idDiscriminator, DateTimeOffset dateBegin, int take = 86400, CancellationToken token = default)
+    {
+        var result = await repository.GetGtDate(idDiscriminator, dateBegin, token);
 
+        return Ok(result);
+    }
 
+    [HttpGet("datesRange")]
+    [ProducesResponseType(typeof(DatesRangeDto), (int)HttpStatusCode.OK)]
+    public async Task<IActionResult> GetDatesRangeAsync(Guid idDiscriminator, CancellationToken token)
+    {
+        var result = await repository.GetDatesRange(idDiscriminator, token);
 
-
+        return Ok(result);
+    }
 }
diff --git a/Persistence.Repository/Repositories/ChangeLogRepository.cs b/Persistence.Repository/Repositories/ChangeLogRepository.cs
index 5bfb870..98ff7d3 100644
--- a/Persistence.Repository/Repositories/ChangeLogRepository.cs
+++ b/Persistence.Repository/Repositories/ChangeLogRepository.cs
@@ -256,4 +256,30 @@ public class ChangeLogRepository : IChangeLogRepository
         return entity;
     }
 
+    public async Task<IEnumerable<DataWithWellDepthAndSectionDto>> GetGtDate(Guid idDiscriminator, DateTimeOffset dateBegin, CancellationToken token)
+    {
+        var date = dateBegin.ToUniversalTime();
+        var query = this.db.Set<ChangeLog>()
+            .Where(e => e.IdDiscriminator == idDiscriminator)
+            .Where(e => e.Creation >= date || e.Obsolete >= date);
+
+        var entities = await query.ToArrayAsync(token);
+
+        var dtos = entities.Select(e => e.Adapt<DataWithWellDepthAndSectionDto>());
+
+        return dtos;
+    }
+
+    public async Task<DatesRangeDto?> GetDatesRange(Guid idDiscriminator, CancellationToken token)
+    {
+        var query = this.db.Set<ChangeLog>().Where(e => e.IdDiscriminator == idDiscriminator);
+        var minDate = await query.MinAsync(o => o.Creation, token);
+        var maxDate = await query.MaxAsync(o => o.Creation, token);
+
+        return new DatesRangeDto
+        {
+            From = minDate,
+            To = maxDate
+        };
+    }
 }
diff --git a/Persistence/API/IChangeLogApi.cs b/Persistence/API/IChangeLogApi.cs
index a46fc98..40ca8ae 100644
--- a/Persistence/API/IChangeLogApi.cs
+++ b/Persistence/API/IChangeLogApi.cs
@@ -7,7 +7,7 @@ namespace Persistence.API;
 /// <summary>
 /// Интерфейс для работы с API журнала изменений
 /// </summary>
-public interface IChangeLogApi
+public interface IChangeLogApi : ISyncWithDiscriminatorApi<DataWithWellDepthAndSectionDto>
 {
     /// <summary>
     /// Импорт с заменой: удаление старых строк и добавление новых
diff --git a/Persistence/API/ISyncApi.cs b/Persistence/API/ISyncApi.cs
index 7f72812..286df3d 100644
--- a/Persistence/API/ISyncApi.cs
+++ b/Persistence/API/ISyncApi.cs
@@ -6,7 +6,7 @@ namespace Persistence.API;
 /// <summary>
 /// Интерфейс для API, предназначенного для синхронизации данных
 /// </summary>
-public interface ISyncApi<TDto> where TDto : class, new()
+public interface ISyncApi<TDto> where TDto : class
 {
     /// <summary>
     /// Получить порцию записей, начиная с заданной даты 
diff --git a/Persistence/API/ISyncWithDiscriminatorApi.cs b/Persistence/API/ISyncWithDiscriminatorApi.cs
new file mode 100644
index 0000000..c0c72f0
--- /dev/null
+++ b/Persistence/API/ISyncWithDiscriminatorApi.cs
@@ -0,0 +1,28 @@
+using Microsoft.AspNetCore.Mvc;
+using Persistence.Models;
+
+namespace Persistence.API;
+
+/// <summary>
+/// Интерфейс для API, предназначенного для синхронизации данных, у которых есть дискриминатор
+/// </summary>
+public interface ISyncWithDiscriminatorApi<TDto>
+{
+    /// <summary>
+    /// Получить порцию записей, начиная с заданной даты 
+    /// </summary>
+    /// <param name="idDiscriminator"></param>
+    /// <param name="dateBegin"></param>
+    /// <param name="take">количество записей</param>
+    /// <param name="token"></param>
+    /// <returns></returns>
+    Task<IActionResult> GetPart(Guid idDiscriminator, DateTimeOffset dateBegin, int take = 24 * 60 * 60, CancellationToken token = default);
+
+    /// <summary>
+    /// Получить диапазон дат, для которых есть данные в репозитории
+    /// </summary>
+    /// <param name="idDiscriminator"></param>
+    /// <param name="token"></param>
+    /// <returns></returns>
+    Task<IActionResult> GetDatesRangeAsync(Guid idDiscriminator, CancellationToken token);
+}
diff --git a/Persistence/Repositories/IChangeLogRepository.cs b/Persistence/Repositories/IChangeLogRepository.cs
index b5cd53a..c885c90 100644
--- a/Persistence/Repositories/IChangeLogRepository.cs
+++ b/Persistence/Repositories/IChangeLogRepository.cs
@@ -7,7 +7,7 @@ namespace Persistence.Repositories;
 /// Интерфейс для работы с историческими данными
 /// </summary>
 /// <typeparam name="TDto"></typeparam>
-public interface IChangeLogRepository //: ISyncRepository<TDto>
+public interface IChangeLogRepository : ISyncWithDiscriminatorRepository<DataWithWellDepthAndSectionDto>
 {
     /// <summary>
     /// Добавление записей
diff --git a/Persistence/Repositories/ISyncRepository.cs b/Persistence/Repositories/ISyncRepository.cs
index e18c5f5..5a5c9be 100644
--- a/Persistence/Repositories/ISyncRepository.cs
+++ b/Persistence/Repositories/ISyncRepository.cs
@@ -1,17 +1,25 @@
-namespace Persistence.Repositories;
+using Persistence.Models;
+
+namespace Persistence.Repositories;
 
 /// <summary>
 /// Интерфейс по работе с данными
 /// </summary>
 /// <typeparam name="TDto"></typeparam>
 public interface ISyncRepository<TDto>
-    where TDto : class, new()
 {
     /// <summary>
     /// Получить данные, начиная с определенной даты
     /// </summary>
     /// <param name="dateBegin">дата начала</param>
+    /// <param name="token"></param>    /// <returns></returns>
+    Task<IEnumerable<TDto>> GetGtDate(DateTimeOffset dateBegin, CancellationToken token);
+
+
+    /// <summary>
+    /// Получить диапазон дат, для которых есть данные в репозитории
+    /// </summary>
     /// <param name="token"></param>
     /// <returns></returns>
-    Task<IEnumerable<TDto>> GetGtDate(DateTimeOffset dateBegin, CancellationToken token);
+    Task<DatesRangeDto?> GetDatesRange(CancellationToken token);
 }
diff --git a/Persistence/Repositories/ISyncWithDiscriminatorRepository.cs b/Persistence/Repositories/ISyncWithDiscriminatorRepository.cs
new file mode 100644
index 0000000..7e0bd62
--- /dev/null
+++ b/Persistence/Repositories/ISyncWithDiscriminatorRepository.cs
@@ -0,0 +1,28 @@
+using Persistence.Models;
+
+namespace Persistence.Repositories;
+
+/// <summary>
+/// Интерфейс по работе с данными, у которых есть дискриминатор
+/// </summary>
+/// <typeparam name="TDto"></typeparam>
+public interface ISyncWithDiscriminatorRepository<TDto>
+{
+    /// <summary>
+    /// Получить данные, начиная с определенной даты
+    /// </summary>
+    /// <param name="idDiscriminator">дискриминатор таблицы</param>
+    /// <param name="dateBegin">дата начала</param>
+    /// <param name="token"></param>    
+    /// /// <returns></returns>
+    Task<IEnumerable<TDto>> GetGtDate(Guid idDiscriminator, DateTimeOffset dateBegin, CancellationToken token);
+
+
+    /// <summary>
+    /// Получить диапазон дат, для которых есть данные в репозитории
+    /// </summary>
+    /// <param name="idDiscriminator">дискриминатор таблицы</param>
+    /// <param name="token"></param>
+    /// <returns></returns>
+    Task<DatesRangeDto?> GetDatesRange(Guid idDiscriminator, CancellationToken token);
+}
diff --git a/Persistence/Repositories/ITimeSeriesBaseRepository.cs b/Persistence/Repositories/ITimeSeriesBaseRepository.cs
index 7102d97..26edf2f 100644
--- a/Persistence/Repositories/ITimeSeriesBaseRepository.cs
+++ b/Persistence/Repositories/ITimeSeriesBaseRepository.cs
@@ -19,11 +19,4 @@ public interface ITimeSeriesBaseRepository<TDto>
         double intervalSec = 600d, 
         int approxPointsCount = 1024,
         CancellationToken token = default);
-
-    /// <summary>
-    /// Получить диапазон дат, для которых есть данные в репозитории
-    /// </summary>
-    /// <param name="token"></param>
-    /// <returns></returns>
-    Task<DatesRangeDto?> GetDatesRange(CancellationToken token);
 }