Clean Water Act discharge permit · NPDES IDR05J12A

IMC MIDDLETON #2, Middleton, ID: NPDES IDR05J12A discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

IMC MIDDLETON #2, held by STAKER PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION, holds NPDES permit IDR05J12A, which discharges to Unnamed Agricultural Drain To Boise River. EPA’s file records it issued January 15, 2021 and expiring February 28, 2026.

IMC MIDDLETON #2, Middleton, Idaho: Coverage under a general permit IDR05J12A, held by STAKER PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued January 15, 2021, term to February 28, 2026; discharges to Unnamed agricultural drain to Boise River.

Idaho holds 245 Industrial stormwater coverages of this permit type in EPA’s file; 32 were issued before IDR05J12A. STAKER PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION holds 2 permits in Idaho.

Other permits held by STAKER PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION

PAVEMENT PRESERVATION AND ADA (2022) PHASE 3, Boise: IDR10C1Q3, issued January 10, 2022

Coverages issued nearest IDR05J12A

January 15, 2021: GLC ROSE PIT, Blackfoot, IDR05J11M, held by Gale Lim Construction LLC
January 15, 2021: BUNKER HILL MINE, Kellogg, IDR05J11N, held by Silver Valley Metals Corp.
January 15, 2021: NORTHWEST BUILDING SYSTEMS, Boise, IDR05J11W, held by Northwest Building Systems
January 15, 2021: WATER RECLAMATION FACILITY, Moscow, IDR05J121, held by City of Moscow
January 15, 2021: MOSCOW CITY SHOP, Moscow, IDR05J122, held by City of Moscow
January 15, 2021: IDAHO COBALT OPERATIONS, Salmon, IDR05J12B, held by Jervois Mining USA Limited
January 15, 2021: LIME MOUNTAIN QUARRY, Orofino, IDR05J12D, held by Rondys, Inc. dba Idaho Lime
January 15, 2021: GOLDEN K RECYCLING, Pocatello, IDR05J12I, held by Golden K Recycling
March 1, 2021: IDAHO TIMBER CORP OF IDAHO, Weiser, IDR05J10N, held by TIMBER CORP OF IDAHO, LLC
April 1, 2021: GALE LIM CONSTRUCTION LLC, Blackfoot, IDR053009

IMC MIDDLETON #2 among its neighbors

EPA’s permit file holds 197 discharge permits in the Mill Slough-Boise River subwatershed (HUC 170501140410), IDR05J12A among them. Its county holds 377, 2 of them major permits; IDR05J12A is a minor permit.

Other permits in the Mill Slough-Boise River subwatershed (HUC 170501140410)

1ST STREET TOWNHOMES SUBDIVISION, Star: IDR10C20H, minor permit, discharging to Boise River, permit term to February 9, 2027
2684 BEACON LIGHT IMPROVEMENT PROJECT, Eagle: IDR10C1O0, minor permit, discharging to Foothill Ditch, permit term to February 9, 2027
9335 SH-44 4 ACRE LOT, Middleton: IDR1002ZU, not classed
ACHD LINDRE: SH44 TO FLOATING FEATHER, Eagle: IDR10C1TT, minor permit, discharging to Foothill Ditch, permit term to February 9, 2027
AMBERLY RANCH SUBDIVISION, Eagle: IDR10L0FX, not classed
AMERICAN STAR SUBDIVISION NO. 2, Star: IDR1002TO, minor permit, permit term to February 15, 2022
AMERICAN STAR SUBDIVISION NO. 3, Star: IDR10C05M, minor permit, discharging to McHenry Lateral, Big Gulch Creek, permit term to February 16, 2022
ARTESIAN SPRINGS SUBDIVISION, Middleton: IDR10C1JY, minor permit, discharging to Mill Slough, permit term to February 9, 2027
ARVORY CREST SUBDIVISION PHASE 4, Star: IDR10C1YC, minor permit, discharging to McHenery Lateral, permit term to February 9, 2027
BALD EAGLE POINTE SUBDIVISION NO. 1, Eagle: IDR1002PH, minor permit, permit term to February 15, 2022

What the register holds for IMC MIDDLETON #2: its NPDES ID, its permit type and status, its dates, its address in Middleton, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR05J12A.

Identity

Facility as filed	IMC MIDDLETON #2
Permittee as filed	STAKER PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION
NPDES ID	IDR05J12A
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	January 15, 2021
Expiration date	February 28, 2026
Address	Middleton, ID 83644
Receiving water	Unnamed agricultural drain to Boise River
Subwatershed	Mill Slough-Boise River (HUC 170501140410)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDR05J12A.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR05J12A.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR05J12A.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IDR05J12A.

Watch this permit

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

Violations are on file for 10.0% of the 20 storm water industrial permits in Canyon County, and IMC MIDDLETON #2 is counted in that group. Of the 5 storm water industrial permits in Canyon County, including this entry, 40.0% were issued before IMC MIDDLETON #2, and the Mill Slough-Boise River subwatershed (HUC 170501140410) holds 197 NPDES permits.