diff --git a/etc/example.env b/etc/example.env
index 77873013..7aa87cfb 100644
--- a/etc/example.env
+++ b/etc/example.env
@@ -47,6 +47,7 @@ GOHAN_API_CONTAINERIZED_VCF_PATH=/app/vcfs
 GOHAN_API_GTF_PATH=/path/to/gtfs/on/host/machine
 GOHAN_API_CONTAINERIZED_GTF_PATH=/app/gtfs
 
+GOHAN_API_BULK_INDEXING_CAP=10000
 GOHAN_API_FILE_PROC_CONC_LVL=3
 GOHAN_API_LINE_PROC_CONC_LVL=1000
 
diff --git a/src/api/main.go b/src/api/main.go
index 52c49a29..3cff4811 100644
--- a/src/api/main.go
+++ b/src/api/main.go
@@ -35,6 +35,7 @@ func main() {
 
 		"\tVCF Directory Path : %s \n"+
 		"\tGTF Directory Path : %s \n"+
+		"\tBulk Indexing Cap : %d\n"+
 		"\tFile Processing Concurrency Level : %d\n"+
 		"\tLine Processing Concurrency Level : %d\n"+
 		"\tElasticsearch Url : %s \n"+
@@ -55,6 +56,7 @@ func main() {
 		cfg.Debug,
 		cfg.Api.VcfPath,
 		cfg.Api.GtfPath,
+		cfg.Api.BulkIndexingCap,
 		cfg.Api.FileProcessingConcurrencyLevel,
 		cfg.Api.LineProcessingConcurrencyLevel,
 		cfg.Elasticsearch.Url, cfg.Elasticsearch.Username,
diff --git a/src/api/models/config.go b/src/api/models/config.go
index b72b8d9b..5f9b316f 100644
--- a/src/api/models/config.go
+++ b/src/api/models/config.go
@@ -8,6 +8,7 @@ type Config struct {
 		Port                           string `yaml:"port" envconfig:"GOHAN_API_INTERNAL_PORT"`
 		VcfPath                        string `yaml:"vcfPath" envconfig:"GOHAN_API_VCF_PATH"`
 		LocalVcfPath                   string `yaml:"localVcfPath" envconfig:"GOHAN_API_VCF_PATH"`
+		BulkIndexingCap                int    `yaml:"BulkIndexingCap" envconfig:"GOHAN_API_BULK_INDEXING_CAP"`
 		FileProcessingConcurrencyLevel int    `yaml:"fileProcessingConcurrencyLevel" envconfig:"GOHAN_API_FILE_PROC_CONC_LVL"`
 		LineProcessingConcurrencyLevel int    `yaml:"lineProcessingConcurrencyLevel" envconfig:"GOHAN_API_LINE_PROC_CONC_LVL"`
 		GtfPath                        string `yaml:"gtfPath" envconfig:"GOHAN_API_GTF_PATH"`
diff --git a/src/api/models/dtos.go b/src/api/models/dtos.go
index c8a0d4ea..e57e417e 100644
--- a/src/api/models/dtos.go
+++ b/src/api/models/dtos.go
@@ -17,6 +17,8 @@ type BentoV2CompatibleVariantResponseDataModel struct {
 	GenotypeType string `json:"genotype_type"`
 }
 
+// --
+
 type VariantsResponseDTO struct {
 	Status  int                        `json:"status"`
 	Message string                     `json:"message"`
@@ -29,6 +31,8 @@ type VariantResponseDataModel struct {
 	Results   interface{} `json:"results"` // i.e.: []Variant or []string
 }
 
+// -- --
+
 type GenesResponseDTO struct {
 	Status  int    `json:"status"`
 	Message string `json:"message"`
diff --git a/src/api/services/ingestion.go b/src/api/services/ingestion.go
index 77f1502f..c1e9baff 100644
--- a/src/api/services/ingestion.go
+++ b/src/api/services/ingestion.go
@@ -50,10 +50,6 @@ type (
 	}
 )
 
-const (
-	defaultBulkIndexingCap int = 10000 // TODO: make parameterizable
-)
-
 func NewIngestionService(es *elasticsearch.Client, cfg *models.Config) *IngestionService {
 
 	iz := &IngestionService{
@@ -62,15 +58,15 @@ func NewIngestionService(es *elasticsearch.Client, cfg *models.Config) *Ingestio
 		IngestRequestMap:               map[string]*ingest.VariantIngestRequest{},
 		GeneIngestRequestChan:          make(chan *ingest.GeneIngestRequest),
 		GeneIngestRequestMap:           map[string]*ingest.GeneIngestRequest{},
-		IngestionBulkIndexingCapacity:  defaultBulkIndexingCap,
-		IngestionBulkIndexingQueue:     make(chan *structs.IngestionQueueStructure, defaultBulkIndexingCap),
+		IngestionBulkIndexingCapacity:  cfg.Api.BulkIndexingCap,
+		IngestionBulkIndexingQueue:     make(chan *structs.IngestionQueueStructure, cfg.Api.BulkIndexingCap),
 		GeneIngestionBulkIndexingQueue: make(chan *structs.GeneIngestionQueueStructure, 10),
 		ConcurrentFileIngestionQueue:   make(chan bool, cfg.Api.FileProcessingConcurrencyLevel),
 		ElasticsearchClient:            es,
 	}
 
 	//see: https://www.elastic.co/blog/why-am-i-seeing-bulk-rejections-in-my-elasticsearch-cluster
-	var numWorkers = defaultBulkIndexingCap / 100
+	var numWorkers = iz.IngestionBulkIndexingCapacity / 100
 	//the lower the denominator (the number of documents per bulk upload). the higher
 	//the chances of 100% successful upload, though the longer it may take (negligible)