BACKBONE MOUNTAIN,LLC.

NPDES permit MD0068811 · Minor NON-POTW · effective, expires 2026-12-31 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (39.301388, -79.419445); you set the radius.

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

EPA's record, 2025-09-01 to 2026-08-31

EPA's file shows no filings for this permit in this window. That is a statement about the file, not about the facility.

Reporting

Reports are due about 89 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

2 other limits: fewer than 20 comparable permits.

Limits in force (17)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitdaily maximum report only Jun, Jul, Aug, Sep
001pHminimum >= 6 SU all year
001pHmaximum <= 9 SU all year
001Solids, total suspendedmaximum monthly average <= 30 mg/L all year
001Solids, total suspendeddaily maximum <= 45 mg/L all year
001Solids, total suspendedcumulative total <= 10.5 ton/yr all year
001Solids, total suspendedmonthly total report only all year
001Iron, total [as Fe]maximum monthly average <= 3 mg/L all year
001Iron, total [as Fe]daily maximum <= 6 mg/L all year
001Iron, total [as Fe]cumulative total <= 1501 lb/yr all year
001Iron, total [as Fe]monthly total report only all year
001Manganese, total [as Mn]maximum monthly average <= 2 mg/L all year
001Manganese, total [as Mn]daily maximum <= 4 mg/L all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
001Sulfates, total [as SO4]monthly average report only all year
001Sulfates, total [as SO4]daily maximum report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states