Grand Island Resources LLC

NPDES permit CO0032751 · Minor NON-POTW · administratively continued, expires 2019-03-31 · 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 2019-03-31 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 (214)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX WK AV report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Arsenic, total recoverable30DA AVG report only all year
001Iron, total recoverable30DA AVG report only all year
001Zinc, total recoverable30DA AVG <= 750 ug/L all year
001Zinc, total recoverableDAILY MX <= 1500 ug/L all year
001Cadmium, total recoverable30DA AVG <= 50 ug/L all year
001Cadmium, total recoverableDAILY MX <= 300 ug/L all year
001Lead, total recoverable30DA AVG <= 300 ug/L all year
001Lead, total recoverableDAILY MX <= 600 ug/L all year
001Copper, total recoverable30DA AVG <= 150 ug/L all year
001Copper, total recoverableDAILY MX <= 300 ug/L all year
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001Zinc, potentially dissolved30DA AVG <= 186 ug/L Jan
001Zinc, potentially dissolved30DA AVG <= 186 ug/L Feb
001Zinc, potentially dissolved30DA AVG <= 176 ug/L Mar
001Zinc, potentially dissolved30DA AVG <= 176 ug/L Apr
001Zinc, potentially dissolved30DA AVG <= 182 ug/L May
001Zinc, potentially dissolved30DA AVG <= 262 ug/L Jun
001Zinc, potentially dissolved30DA AVG <= 221 ug/L Jul
001Zinc, potentially dissolved30DA AVG <= 241 ug/L Aug
001Zinc, potentially dissolved30DA AVG <= 257 ug/L Sep
001Zinc, potentially dissolved30DA AVG <= 262 ug/L Oct
001Zinc, potentially dissolved30DA AVG <= 202 ug/L Nov
001Zinc, potentially dissolved30DA AVG <= 186 ug/L Dec
001Zinc, potentially dissolvedDAILY MX <= 184 ug/L Jan
001Zinc, potentially dissolvedDAILY MX <= 203 ug/L Feb
001Zinc, potentially dissolvedDAILY MX <= 194 ug/L Mar
001Zinc, potentially dissolvedDAILY MX <= 202 ug/L Apr
001Zinc, potentially dissolvedDAILY MX <= 208 ug/L May
001Zinc, potentially dissolvedDAILY MX <= 301 ug/L Jun
001Zinc, potentially dissolvedDAILY MX <= 253 ug/L Jul
001Zinc, potentially dissolvedDAILY MX <= 263 ug/L Aug
001Zinc, potentially dissolvedDAILY MX <= 248 ug/L Sep
001Zinc, potentially dissolvedDAILY MX <= 291 ug/L Oct
001Zinc, potentially dissolvedDAILY MX <= 232 ug/L Nov
001Zinc, potentially dissolvedDAILY MX <= 182 ug/L Dec
001Silver, potentially dissolved30DA AVG <= .11 ug/L Mar
001Silver, potentially dissolved30DA AVG <= .12 ug/L Jan
001Silver, potentially dissolved30DA AVG <= .12 ug/L Feb
001Silver, potentially dissolved30DA AVG <= .11 ug/L Apr
001Silver, potentially dissolved30DA AVG <= .12 ug/L May
001Silver, potentially dissolved30DA AVG <= .17 ug/L Jun
001Silver, potentially dissolved30DA AVG <= .14 ug/L Jul
001Silver, potentially dissolved30DA AVG <= .16 ug/L Aug
001Silver, potentially dissolved30DA AVG <= .17 ug/L Sep
001Silver, potentially dissolved30DA AVG <= .17 ug/L Oct
001Silver, potentially dissolved30DA AVG <= .13 ug/L Nov
001Silver, potentially dissolved30DA AVG <= .12 ug/L Dec
001Silver, potentially dissolvedDAILY MX <= 3 ug/L Mar
001Silver, potentially dissolvedDAILY MX <= 2.9 ug/L Jan
001Silver, potentially dissolvedDAILY MX <= 3.2 ug/L Feb
001Silver, potentially dissolvedDAILY MX <= 3.1 ug/L Apr
001Silver, potentially dissolvedDAILY MX <= 3.2 ug/L May
001Silver, potentially dissolvedDAILY MX <= 4.7 ug/L Jun
001Silver, potentially dissolvedDAILY MX <= 3.9 ug/L Jul
001Silver, potentially dissolvedDAILY MX <= 4.1 ug/L Aug
001Silver, potentially dissolvedDAILY MX <= 3.8 ug/L Sep
001Silver, potentially dissolvedDAILY MX <= 4.5 ug/L Oct
001Silver, potentially dissolvedDAILY MX <= 3.6 ug/L Nov
001Silver, potentially dissolvedDAILY MX <= 2.8 ug/L Dec
001Copper, potentially dissolved30DA AVG <= 13 ug/L Mar
001Copper, potentially dissolved30DA AVG <= 13 ug/L Feb
001Copper, potentially dissolved30DA AVG <= 13 ug/L Jan
001Copper, potentially dissolved30DA AVG <= 13 ug/L Apr
001Copper, potentially dissolved30DA AVG <= 13 ug/L May
001Copper, potentially dissolved30DA AVG <= 13 ug/L Jun
001Copper, potentially dissolved30DA AVG <= 16 ug/L Jul
001Copper, potentially dissolved30DA AVG <= 17 ug/L Aug
001Copper, potentially dissolved30DA AVG <= 19 ug/L Sep
001Copper, potentially dissolved30DA AVG <= 19 ug/L Oct
001Copper, potentially dissolved30DA AVG <= 14 ug/L Nov
001Copper, potentially dissolved30DA AVG <= 13 ug/L Dec
001Copper, potentially dissolvedDAILY MX <= 19 ug/L Mar
001Copper, potentially dissolvedDAILY MX <= 20 ug/L Feb
001Copper, potentially dissolvedDAILY MX <= 18 ug/L Jan
001Copper, potentially dissolvedDAILY MX <= 20 ug/L Apr
001Copper, potentially dissolvedDAILY MX <= 20 ug/L May
001Copper, potentially dissolvedDAILY MX <= 20 ug/L Jun
001Copper, potentially dissolvedDAILY MX <= 25 ug/L Jul
001Copper, potentially dissolvedDAILY MX <= 25 ug/L Aug
001Copper, potentially dissolvedDAILY MX <= 28 ug/L Sep
001Copper, potentially dissolvedDAILY MX <= 28 ug/L Oct
001Copper, potentially dissolvedDAILY MX <= 22 ug/L Nov
001Copper, potentially dissolvedDAILY MX <= 18 ug/L Dec
001Arsenic, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Feb
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Mar
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Jan
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Apr
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L May
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Jun
001Cadmium, potentially dissolvd30DA AVG <= 2.1 ug/L Jul
001Cadmium, potentially dissolvd30DA AVG <= 2.1 ug/L Aug
001Cadmium, potentially dissolvd30DA AVG <= 2.1 ug/L Sep
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Oct
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Nov
001Cadmium, potentially dissolvd30DA AVG <= .63 ug/L Jan
001Cadmium, potentially dissolvd30DA AVG <= .63 ug/L Feb
001Cadmium, potentially dissolvd30DA AVG <= .6 ug/L Mar
001Cadmium, potentially dissolvd30DA AVG <= .6 ug/L Apr
001Cadmium, potentially dissolvd30DA AVG <= .62 ug/L May
001Cadmium, potentially dissolvd30DA AVG <= .89 ug/L Jun
001Cadmium, potentially dissolvd30DA AVG <= .75 ug/L Jul
001Cadmium, potentially dissolvd30DA AVG <= .82 ug/L Aug
001Cadmium, potentially dissolvd30DA AVG <= .87 ug/L Sep
001Cadmium, potentially dissolvd30DA AVG <= .89 ug/L Oct
001Cadmium, potentially dissolvd30DA AVG <= .69 ug/L Nov
001Cadmium, potentially dissolvd30DA AVG <= .63 ug/L Dec
001Cadmium, potentially dissolvd30DA AVG <= 1.7 ug/L Dec
001Cadmium, potentially dissolvdDAILY MX report only Feb
001Cadmium, potentially dissolvdDAILY MX report only Mar
001Cadmium, potentially dissolvdDAILY MX report only Jan
001Cadmium, potentially dissolvdDAILY MX report only Apr
001Cadmium, potentially dissolvdDAILY MX report only May
001Cadmium, potentially dissolvdDAILY MX report only Jun
001Cadmium, potentially dissolvdDAILY MX report only Jul
001Cadmium, potentially dissolvdDAILY MX report only Aug
001Cadmium, potentially dissolvdDAILY MX report only Sep
001Cadmium, potentially dissolvdDAILY MX report only Oct
001Cadmium, potentially dissolvdDAILY MX report only Nov
001Cadmium, potentially dissolvdDAILY MX <= 2.3 ug/L Jan
001Cadmium, potentially dissolvdDAILY MX <= 2.5 ug/L Feb
001Cadmium, potentially dissolvdDAILY MX <= 2.4 ug/L Mar
001Cadmium, potentially dissolvdDAILY MX <= 2.5 ug/L Apr
001Cadmium, potentially dissolvdDAILY MX <= 2.6 ug/L May
001Cadmium, potentially dissolvdDAILY MX <= 3.7 ug/L Jun
001Cadmium, potentially dissolvdDAILY MX <= 3.1 ug/L Jul
001Cadmium, potentially dissolvdDAILY MX <= 3.2 ug/L Aug
001Cadmium, potentially dissolvdDAILY MX <= 3 ug/L Sep
001Cadmium, potentially dissolvdDAILY MX <= 3.6 ug/L Oct
001Cadmium, potentially dissolvdDAILY MX <= 2.8 ug/L Nov
001Cadmium, potentially dissolvdDAILY MX <= 2.2 ug/L Dec
001Cadmium, potentially dissolvdDAILY MX report only Dec
001Chromium, trivalent, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvd30DA AVG <= 3.8 ug/L Jan
001Lead, potentially dissolvd30DA AVG <= 3.6 ug/L Mar
001Lead, potentially dissolvd30DA AVG <= 3.8 ug/L Feb
001Lead, potentially dissolvd30DA AVG <= 3.6 ug/L Apr
001Lead, potentially dissolvd30DA AVG <= 3.8 ug/L May
001Lead, potentially dissolvd30DA AVG <= 5.4 ug/L Jun
001Lead, potentially dissolvd30DA AVG <= 4.6 ug/L Jul
001Lead, potentially dissolvd30DA AVG <= 5 ug/L Aug
001Lead, potentially dissolvd30DA AVG <= 5.3 ug/L Sep
001Lead, potentially dissolvd30DA AVG <= 5.4 ug/L Oct
001Lead, potentially dissolvd30DA AVG <= 4.2 ug/L Nov
001Lead, potentially dissolvd30DA AVG <= 3.8 ug/L Dec
001Lead, potentially dissolvdDAILY MX <= 85 ug/L Jan
001Lead, potentially dissolvdDAILY MX <= 94 ug/L Feb
001Lead, potentially dissolvdDAILY MX <= 90 ug/L Mar
001Lead, potentially dissolvdDAILY MX <= 94 ug/L Apr
001Lead, potentially dissolvdDAILY MX <= 97 ug/L May
001Lead, potentially dissolvdDAILY MX <= 140 ug/L Jun
001Lead, potentially dissolvdDAILY MX <= 118 ug/L Jul
001Lead, potentially dissolvdDAILY MX <= 122 ug/L Aug
001Lead, potentially dissolvdDAILY MX <= 115 ug/L Sep
001Lead, potentially dissolvdDAILY MX <= 135 ug/L Oct
001Lead, potentially dissolvdDAILY MX <= 108 ug/L Nov
001Lead, potentially dissolvdDAILY MX <= 85 ug/L Dec
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 recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= .103 MGD Feb
001Flow, in conduit or thru treatment plant30DA AVG <= .129 MGD Sep
001Flow, in conduit or thru treatment plant30DA AVG <= .103 MGD Jan
001Flow, in conduit or thru treatment plant30DA AVG <= .374 MGD May
001Flow, in conduit or thru treatment plant30DA AVG <= .103 MGD Nov
001Flow, in conduit or thru treatment plant30DA AVG <= .148 MGD Apr
001Flow, in conduit or thru treatment plant30DA AVG <= .265 MGD Jul
001Flow, in conduit or thru treatment plant30DA AVG <= .129 MGD Mar
001Flow, in conduit or thru treatment plant30DA AVG <= .148 MGD Aug
001Flow, in conduit or thru treatment plant30DA AVG <= .458 MGD Jun
001Flow, in conduit or thru treatment plant30DA AVG <= .103 MGD Oct
001Flow, in conduit or thru treatment plant30DA AVG <= .103 MGD Dec
001Flow, in conduit or thru treatment plantDAILY MX report only Feb
001Flow, in conduit or thru treatment plantDAILY MX report only Sep
001Flow, in conduit or thru treatment plantDAILY MX report only Jan
001Flow, in conduit or thru treatment plantDAILY MX report only May
001Flow, in conduit or thru treatment plantDAILY MX report only Nov
001Flow, in conduit or thru treatment plantDAILY MX report only Apr
001Flow, in conduit or thru treatment plantDAILY MX report only Jul
001Flow, in conduit or thru treatment plantDAILY MX report only Mar
001Flow, in conduit or thru treatment plantDAILY MX report only Aug
001Flow, in conduit or thru treatment plantDAILY MX report only Jun
001Flow, in conduit or thru treatment plantDAILY MX report only Oct
001Flow, in conduit or thru treatment plantDAILY MX report only Dec
001Mercury, total [low level]30DA AVG report only all year
001Mercury, total [low level]DAILY MX report only all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Mercury, total [as Hg]30DA AVG <= 1 ug/L all year
001Mercury, total [as Hg]DAILY MX <= 2 ug/L all year
001Oil and grease visualINST MAX report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 52 tox chronic Jun
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 53 tox chronic Sep
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 52 tox chronic Dec
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 73 tox chronic Mar
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 52 tox chronic Jun
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 53 tox chronic Sep
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 52 tox chronic Dec
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 73 tox chronic Mar

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