Turquoise Connection The

NPDES permit CO0048939 · Minor NON-POTW · administratively continued, expires 2020-08-31 · EPA's file as of 2026-09-19

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.

This permit expired on 2020-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (42)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, settleableDAILY MX <= .2 mL/L all year
001Arsenic, total recoverable30DA AVG report only all year
001Iron, total recoverable30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Silver, potentially dissolved30DA AVG report only all year
001Silver, potentially dissolvedDAILY MX report only all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolvedDAILY MX report only all year
001Arsenic, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG report only all year
001Cadmium, potentially dissolvdDAILY MX report only all year
001Lead, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvdDAILY MX report only all year
001Manganese, potentially dissolvd30DA AVG report only all year
001Manganese, potentially dissolvdDAILY MX report only all year
001Nickel, potentially dissolvd30DA AVG report only all year
001Nickel, potentially dissolvdDAILY MX report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Chromium, trivalent total recoverable30DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= .1728 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
002TurbidityQRTR AVG <= 50 NTU (alert) all year
002pHMINIMUM >= 6 SU (alert) all year
002pHMAXIMUM <= 9 SU (alert) all year
002Solids, total suspendedQRTR AVG <= 100 mg/L (alert) all year
002Arsenic, total [as As]QRTR AVG <= 150 ug/L (alert) all year
002Cadmium, total [as Cd]QRTR AVG <= 2.9 ug/L (alert) all year
002Copper, total [as Cu]QRTR AVG <= 2.9 ug/L (alert) all year
002Iron, total [as Fe]QRTR AVG <= 1000 ug/L (alert) all year
002Lead, total [as Pb]QRTR AVG <= 122 ug/L (alert) all year
002Nickel, total [as Ni]QRTR AVG <= 610 ug/L (alert) all year
002Silver, total [as Ag]QRTR AVG <= 6.5 ug/L (alert) all year
002Zinc, total [as Zn]QRTR AVG <= 160 ug/L (alert) all year
002Selenium, total [as Se]QRTR AVG <= 5 ug/L (alert) all year
002Mercury, total [as Hg]QRTR AVG <= 1.4 ug/L (alert) 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