Clean Water Act discharge permit · NPDES IDR10C0Q8

LEDGESTONE SUBDIVISION NO. 4, Kuna, ID: NPDES IDR10C0Q8 discharge permit, effluent exceedances, inspections, penalties

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

LEDGESTONE SUBDIVISION NO. 4, held by Trilogy Development, Inc., holds NPDES permit IDR10C0Q8, which discharges to Mason Creek Feeder. EPA’s file records it issued April 21, 2023 and expiring February 9, 2027.

LEDGESTONE SUBDIVISION NO. 4, Kuna, Idaho: Coverage under a general permit IDR10C0Q8, held by Trilogy Development, Inc.; Construction stormwater; Effective; issued April 21, 2023, term to February 9, 2027; discharges to Mason Creek Feeder.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 2,012 were issued before IDR10C0Q8. Trilogy Development, Inc. holds 102 permits in Idaho.

Other permits held by Trilogy Development, Inc.

PAD THAI HOUSE, Boise: IDR1000UK
AEGEAN ESTATES STOCKPILES, Meridian: IDR1002A2
JUMP CREEK SUBDIVISION: CREASON LATERAL OFFSITE, Meridian: IDR1002BF
AEROSKY PARK 'A' DRAIN TILING, Caldewll: IDR1002VJ
PROMINENCE SUBDIVISION, Boise: IDR10C0NS, issued February 7, 2023
MIDDLEBURY NORTH SUBDIVISION NO. 1 & STONE LATERAL TILING, Nampa: IDR10C0NU, issued February 7, 2023
WAVERLY PARK SUBDIVISION NO. 1, Middleton: IDR10C0OJ, issued March 13, 2023
JASPER RIDGE SUBDIVISION NO. 2, Nampa: IDR10C0PV, issued April 17, 2023
CALLISTO HEIGHTS SUBDIVISION, Boise: IDR10C0TJ, issued January 10, 2022
BEACONWOOD SUBDIVISION NO. 1, Eagle: IDR10C0TM, issued January 10, 2022

Coverages issued nearest IDR10C0Q8

April 17, 2023: JASPER RIDGE SUBDIVISION NO. 2, Nampa, IDR10C0PV, held by Trilogy Development, Inc.
April 20, 2023: FALCON CREST SUBDIVISION NO 3, Kuna, IDR10C0PY, held by SH ACQ2020, LLC
April 20, 2023: GRAYSON SUBDIVISION, Meridian, IDR10C0Q3, held by Mountain Companies
April 21, 2023: SILVER TRAIL SUBDIVISION NO. 8, Kuna, IDR10C0Q5, held by DB Development, LLC
April 21, 2023: HIDDEN LAKES TWIN FALLS, Kimberly, IDR10C0Q6, held by Hazen Homes
April 24, 2023: BEAR LAKE WILDLIFE REFUGE, Montpelier, IDR10C0QC, held by TDX Power Services
May 2, 2023: STATE OF IDAHO MILITARY DIVISION JEROME READINESS CENTER, Jerome, IDR10C0QG, held by Petersen Brothers Construction
May 4, 2023: DAVIS AVE. RECONSTRUCTION, Mccall, IDR10C0QO, held by Das-Co of Idaho
May 4, 2023: SUMMIT SPRINGS APARTMENTS, Jerome, IDR10C0QQ, held by Petersen Brothers Construction
May 4, 2023: FALCON CREST SUBDIVISION NO. 5SH ACQ2020, LLC, Kuna, IDR10C0QS, held by SH ACQ2020, LLC

LEDGESTONE SUBDIVISION NO. 4 among its neighbors

EPA’s permit file holds 360 discharge permits in the Mason Creek subwatershed (HUC 170501140407), IDR10C0Q8 among them. Its county holds 668, 5 of them major permits; IDR10C0Q8 is a minor permit.

Other permits in the Mason Creek subwatershed (HUC 170501140407)

10 MILE RETAIL, Meridian: IDR10037Z, not classed
1209 ANDY LANE TRUCK YARD, Caldwell: IDR1002I9, not classed
17270 NORTHSIDE BOULEVARD, Nampa: IDR10L0KV, not classed
22102 FRANKLIN BLVD & KARCHER RD INT, Nampa: IDR10L0E1, not classed
4-LOT FLEX BUILDING SUBDIVISION, Caldwell: IDR1002R2, not classed
500 LATERAL RELOCATION, Caldwell: IDR10026E, not classed
620 N. 39TH STREET NORTH BUILDING, Nampa: IDR10L07V, not classed
ABC ROOFING SUPPLY COMPANY, Nampa: IDR1000K1, not classed
ADAMS RIDGE APARTMENTS, Nampa: IDR10C27V, minor permit, discharging to Mason Creek, permit term to February 9, 2027
ADAMS RIDGE SUBDIVISION NO 7, Nampa: IDR10C0UC, minor permit, discharging to MIDDLE LATERAL, permit term to February 9, 2027

What the register holds for LEDGESTONE SUBDIVISION NO. 4: its NPDES ID, its permit type and status, its dates, its address in Kuna, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C0Q8.

Identity

Facility as filed	LEDGESTONE SUBDIVISION NO. 4
Permittee as filed	Trilogy Development, Inc.
NPDES ID	IDR10C0Q8
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	April 21, 2023
Expiration date	February 9, 2027
Address	Kuna, ID 83634
Receiving water	Mason Creek Feeder
Receiving water impaired	303(D) Listed
Subwatershed	Mason Creek (HUC 170501140407)

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 IDR10C0Q8.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IDR10C0Q8.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C0Q8.

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 IDR10C0Q8.

Watch this permit

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Nearby on the register

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

Among the 561 storm water construction permits in Ada County, 0.0% carry a violation on file, a set that includes LEDGESTONE SUBDIVISION NO. 4. Mason Creek counts 360 NPDES permits, while 98.4% of the 451 storm water construction permits in Ada County, counting this permit, were issued before it.