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The CHY Company and Olive Springs Quarry, Inc.

Construction Sand And Gravel, Soquel, California. NPDES permit CA0047791 expired Sep 30, 2022; its limits still apply. Last 12 months: no values over a limit, 2 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: form A monthly (9 values), form Y yearly, form Z every 24 months
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 13 reports late

Limits in force (272)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year
Turbiditymonthly averagereport only (NTU)all year
Turbiditydaily maximumreport only (NTU)all year
Specific conductancedaily maximumreport only (umho/cm)all year
pHminimum≥ 7 SUall year
pHmaximum≤ 8.3 SUall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Solids, settleablemonthly average≤ .3 mL/Lall year
Nitrogen, nitrite total [as N]daily maximumreport only (ug/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (ug/L)all year
Cyanide, total [as CN]monthly average≤ 4.3 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 8.5 ug/Lall year
Asbestosmonthly average≤ 7000000 Fib/Lall year
Asbestosdaily maximum≤ 14000000 Fib/Lall year
Arsenic, total recoverablemonthly average≤ 50 ug/Lall year
Arsenic, total recoverabledaily maximum≤ 100 ug/Lall year
Iron, total recoverabledaily maximumreport only (ug/L)all year
Selenium, total recoverablemonthly average≤ 10 ug/Lall year
Selenium, total recoverabledaily maximum≤ 20 ug/Lall year
Thallium, total recoverablemonthly average≤ 1.7 ug/Lall year
Thallium, total recoverabledaily maximum≤ 3.4 ug/Lall year
Beryllium, total recoverable [as Be]monthly average≤ 4 ug/Lall year
Beryllium, total recoverable [as Be]daily maximum≤ 8 ug/Lall year
Barium, total recoverabledaily maximumreport only (ug/L)all year
Chromium, hexavalent [as Cr]monthly average≤ 8 ug/Lall year
Chromium, hexavalent [as Cr]daily maximum≤ 16 ug/Lall year
Chromium, trivalent [as Cr]monthly average≤ 50 ug/Lall year
Chromium, trivalent [as Cr]daily maximum≤ 100 ug/Lall year
Nickel, total recoverablemonthly average≤ 100 ug/Lall year
Nickel, total recoverabledaily maximum≤ 201 ug/Lall year
Silver total recoverablemonthly average≤ 17 ug/Lall year
Silver total recoverabledaily maximum≤ 34 ug/Lall year
Zinc, total recoverablemonthly average≤ 164 ug/Lall year
Zinc, total recoverabledaily maximum≤ 329 ug/Lall year
Aluminum, total recoverabledaily maximumreport only (ug/L)all year
Cadmium, total recoverablemonthly average≤ 5 ug/Lall year
Cadmium, total recoverabledaily maximum≤ 10 ug/Lall year
Lead, total recoverablemonthly average≤ 13 ug/Lall year
Lead, total recoverabledaily maximum≤ 25 ug/Lall year
Copper, total recoverablemonthly average≤ 22 ug/Lall year
Copper, total recoverabledaily maximum≤ 44 ug/Lall year
Antimony, total recoverablemonthly average≤ 6 ug/Lall year
Antimony, total recoverabledaily maximum≤ 12 ug/Lall year
Foaming agentsdaily maximumreport only (ug/L)all year
2-Methyl-4,6-dinitrophenolmonthly average≤ 13 ug/Lall year
2-Methyl-4,6-dinitrophenoldaily maximum≤ 27 ug/Lall year
Diquatdaily maximumreport only (ug/L)all year
Manganese, total recoverabledaily maximumreport only (ug/L)all year
Methyl tert-butyl ether [MTBE]daily maximumreport only (ug/L)all year
Dichlorobromomethanemonthly average≤ .56 ug/Lall year
Dichlorobromomethanedaily maximum≤ 1.12 ug/Lall year
Carbon tetrachloridemonthly average≤ .25 ug/Lall year
Carbon tetrachloridedaily maximum≤ .5 ug/Lall year
1,2-Dichloroethanemonthly average≤ .38 ug/Lall year
1,2-Dichloroethanedaily maximum≤ .76 ug/Lall year
Bromoformmonthly average≤ 4.3 ug/Lall year
Bromoformdaily maximum≤ 8.6 ug/Lall year
Dibromochloromethanemonthly average≤ .4 ug/Lall year
Dibromochloromethanedaily maximum≤ .8 ug/Lall year
Chloroformmonthly average≤ 80 ug/Lall year
Chloroformdaily maximum≤ 160 ug/Lall year
Toluenemonthly average≤ 150 ug/Lall year
Toluenedaily maximum≤ 301 ug/Lall year
Benzenemonthly average≤ 1 ug/Lall year
Benzenedaily maximum≤ 2 ug/Lall year
.delta.-BHCdaily maximumreport only (ug/L)all year
Acenaphthylenedaily maximumreport only (ug/L)all year
Acenaphthenemonthly average≤ 1200 ug/Lall year
Acenaphthenedaily maximum≤ 2407 ug/Lall year
Acroleinmonthly average≤ 320 ug/Lall year
Acroleindaily maximum≤ 642 ug/Lall year
Acrylonitrilemonthly average≤ .059 ug/Lall year
Acrylonitriledaily maximum≤ .12 ug/Lall year
Anthracenemonthly average≤ 9600 ug/Lall year
Anthracenedaily maximum≤ 19259 ug/Lall year
Benzo[b]fluoranthenemonthly average≤ .0044 ug/Lall year
Benzo[b]fluoranthenedaily maximum≤ .0088 ug/Lall year
Benzo[k]fluoranthenemonthly average≤ .0044 ug/Lall year
Benzo[k]fluoranthenedaily maximum≤ .0088 ug/Lall year
Benzo[a]pyrenemonthly average≤ .0044 ug/Lall year
Benzo[a]pyrenedaily maximum≤ .0088 ug/Lall year
Bis[2-chloroethyl] ethermonthly average≤ .031 ug/Lall year
Bis[2-chloroethyl] etherdaily maximum≤ .062 ug/Lall year
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all year
Bis[2-chloroisopropyl] ethermonthly average≤ 1400 ug/Lall year
Bis[2-chloroisopropyl] etherdaily maximum≤ 2809 ug/Lall year
Butyl benzyl phthalatemonthly average≤ 3000 ug/Lall year
Butyl benzyl phthalatedaily maximum≤ 6019 ug/Lall year
Chlorobenzenemonthly average≤ 30 ug/Lall year
Chlorobenzenedaily maximum≤ 60 ug/Lall year
Chrysenemonthly average≤ .0044 ug/Lall year
Chrysenedaily maximum≤ .0088 ug/Lall year
Diethyl phthalatemonthly average≤ 23000 ug/Lall year
Diethyl phthalatedaily maximum≤ 46142 ug/Lall year
Dimethyl phthalatemonthly average≤ 313000 ug/Lall year
Dimethyl phthalatedaily maximum≤ 627937 ug/Lall year
1,2-Diphenylhydrazinemonthly average≤ .04 ug/Lall year
1,2-Diphenylhydrazinedaily maximum≤ .08 ug/Lall year
Endosulfan sulfatemonthly average≤ 110 ug/Lall year
Endosulfan sulfatedaily maximum≤ 221 ug/Lall year
.beta.-Endosulfanmonthly average≤ .046 ug/Lall year
.beta.-Endosulfandaily maximum≤ .092 ug/Lall year
.alpha.-Endosulfanmonthly average≤ .046 ug/Lall year
.alpha.-Endosulfandaily maximum≤ .092 ug/Lall year
Endrin aldehydemonthly average≤ .76 ug/Lall year
Endrin aldehydedaily maximum≤ 1.5 ug/Lall year
Ethylbenzenemonthly average≤ 300 ug/Lall year
Ethylbenzenedaily maximum≤ 602 ug/Lall year
Fluoranthenemonthly average≤ 300 ug/Lall year
Fluoranthenedaily maximum≤ 602 ug/Lall year
Fluorenemonthly average≤ 1300 ug/Lall year
Fluorenedaily maximum≤ 2608 ug/Lall year
Hexachlorocyclopentadienemonthly average≤ 50 ug/Lall year
Hexachlorocyclopentadienedaily maximum≤ 100 ug/Lall year
Hexachlorobutadienemonthly average≤ .44 ug/Lall year
Hexachlorobutadienedaily maximum≤ .88 ug/Lall year
Hexachloroethanemonthly average≤ 1.9 ug/Lall year
Hexachloroethanedaily maximum≤ 3.8 ug/Lall year
Indeno[1,2,3-cd]pyrenemonthly average≤ .0044 ug/Lall year
Indeno[1,2,3-cd]pyrenedaily maximum≤ .0088 ug/Lall year
Isophoronemonthly average≤ 8.4 ug/Lall year
Isophoronedaily maximum≤ 17 ug/Lall year
Methyl bromide [Bromomethane]monthly average≤ 48 ug/Lall year
Methyl bromide [Bromomethane]daily maximum≤ 96 ug/Lall year
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year
Methylene chloridemonthly average≤ 4.7 ug/Lall year
Methylene chloridedaily maximum≤ 9.4 ug/Lall year
N-Nitrosodi-N-propylaminemonthly average≤ .005 ug/Lall year
N-Nitrosodi-N-propylaminedaily maximum≤ .01 ug/Lall year
N-Nitrosodiphenylaminemonthly average≤ 5 ug/Lall year
N-Nitrosodiphenylaminedaily maximum≤ 10 ug/Lall year
N-Nitrosodimethylamine [NDMA]monthly average≤ .00069 ug/Lall year
N-Nitrosodimethylamine [NDMA]daily maximum≤ .0014 ug/Lall year
Nitrobenzenemonthly average≤ 17 ug/Lall year
Nitrobenzenedaily maximum≤ 34 ug/Lall year
Phenanthrenedaily maximumreport only (ug/L)all year
Pyrenemonthly average≤ 960 ug/Lall year
Pyrenedaily maximum≤ 1926 ug/Lall year
Tetrachloroethylenemonthly average≤ .8 ug/Lall year
Tetrachloroethylenedaily maximum≤ 1.6 ug/Lall year
1,1-Dichloroethanemonthly average≤ 5 ug/Lall year
1,1-Dichloroethanedaily maximum≤ 10 ug/Lall year
1,1-Dichloroethylenemonthly average≤ .057 ug/Lall year
1,1-Dichloroethylenedaily maximum≤ .11 ug/Lall year
1,1,1-Trichloroethanemonthly average≤ 200 ug/Lall year
1,1,1-Trichloroethanedaily maximum≤ 401 ug/Lall year
1,1,2-Trichloroethanemonthly average≤ .6 ug/Lall year
1,1,2-Trichloroethanedaily maximum≤ 1.2 ug/Lall year
1,1,2,2-Tetrachloroethanemonthly average≤ .17 ug/Lall year
1,1,2,2-Tetrachloroethanedaily maximum≤ .34 ug/Lall year
Benzo[ghi]perylenedaily maximumreport only (ug/L)all year
Benzo[a]anthracenemonthly average≤ .0044 ug/Lall year
Benzo[a]anthracenedaily maximum≤ .0088 ug/Lall year
1,2-Dichlorobenzenemonthly average≤ 600 ug/Lall year
1,2-Dichlorobenzenedaily maximum≤ 1204 ug/Lall year
1,2-Dichloropropanemonthly average≤ .52 ug/Lall year
1,2-Dichloropropanedaily maximum≤ 1 ug/Lall year
trans-1,2-Dichloroethylenemonthly average≤ 10 ug/Lall year
trans-1,2-Dichloroethylenedaily maximum≤ 20 ug/Lall year
1,2,4-Trichlorobenzenemonthly average≤ 5 ug/Lall year
1,2,4-Trichlorobenzenedaily maximum≤ 10 ug/Lall year
Dibenz[a,h]anthracenemonthly average≤ .0044 ug/Lall year
Dibenz[a,h]anthracenedaily maximum≤ .0088 ug/Lall year
1,3-Dichlorobenzenemonthly average≤ 400 ug/Lall year
1,3-Dichlorobenzenedaily maximum≤ 802 ug/Lall year
1,4-Dichlorobenzenemonthly average≤ 5 ug/Lall year
1,4-Dichlorobenzenedaily maximum≤ 10 ug/Lall year
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (ug/L)all year
2-Chloronaphthalenemonthly average≤ 1700 ug/Lall year
2-Chloronaphthalenedaily maximum≤ 3411 ug/Lall year
2-Chlorophenolmonthly average≤ 120 ug/Lall year
2-Chlorophenoldaily maximum≤ 241 ug/Lall year
2-Nitrophenoldaily maximumreport only (ug/L)all year
Di-n-octyl phthalatedaily maximumreport only (ug/L)all year
2,4-Dichlorophenolmonthly average≤ 93 ug/Lall year
2,4-Dichlorophenoldaily maximum≤ 187 ug/Lall year
2,4-Dimethylphenolmonthly average≤ 540 ug/Lall year
2,4-Dimethylphenoldaily maximum≤ 1083 ug/Lall year
2,4-Dinitrotoluenemonthly average≤ .11 ug/Lall year
2,4-Dinitrotoluenedaily maximum≤ .22 ug/Lall year
2,4-Dinitrophenolmonthly average≤ 70 ug/Lall year
2,4-Dinitrophenoldaily maximum≤ 140 ug/Lall year
2,4,6-Trichlorophenolmonthly average≤ 2.1 ug/Lall year
2,4,6-Trichlorophenoldaily maximum≤ 4.2 ug/Lall year
2,6-Dinitrotoluenedaily maximumreport only (ug/L)all year
3,3'-Dichlorobenzidinemonthly average≤ .04 ug/Lall year
3,3'-Dichlorobenzidinedaily maximum≤ .1 ug/Lall year
4-Bromophenyl phenyl etherdaily maximumreport only (ug/L)all year
4-Chlorophenyl phenyl etherdaily maximumreport only (ug/L)all year
4-Nitrophenoldaily maximumreport only (ug/L)all year
PCB-1016daily maximumreport only (ug/L)all year
2,3,7,8-Tetrachlorodibenzo-p-dioxinmonthly average≤ .000013 ng/Lall year
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximum≤ .000026 ng/Lall year
Phenolmonthly average≤ 1 ug/Lall year
Phenoldaily maximum≤ 2 ug/Lall year
Naphthalenedaily maximumreport only (ug/L)all year
Bolerodaily maximumreport only (ug/L)all year
Dalapondaily maximumreport only (ug/L)all year
Dinosebdaily maximumreport only (ug/L)all year
Oxamyldaily maximumreport only (ug/L)all year
Pentachlorophenolmonthly average≤ .28 ug/Lall year
Pentachlorophenoldaily maximum≤ .56 ug/Lall year
Atrazinedaily maximumreport only (ug/L)all year
Simazinedaily maximumreport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 1.8 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 3.6 ug/Lall year
Di-n-butyl phthalatemonthly average≤ 2700 ug/Lall year
Di-n-butyl phthalatedaily maximum≤ 5417 ug/Lall year
Benzidinemonthly average≤ .00012 ug/Lall year
Benzidinedaily maximum≤ .00024 ug/Lall year
Alachlordaily maximumreport only (ug/L)all year
Vinyl chloridemonthly average≤ .5 ug/Lall year
Vinyl chloridedaily maximum≤ 1 ug/Lall year
Trichloroethylenemonthly average≤ 2.7 ug/Lall year
Trichloroethylenedaily maximum≤ 5.4 ug/Lall year
4,4'-DDTmonthly average≤ .00059 ug/Lall year
4,4'-DDTdaily maximum≤ .0012 ug/Lall year
4,4'-DDDmonthly average≤ .00083 ug/Lall year
4,4'-DDDdaily maximum≤ .0017 ug/Lall year
4,4'-DDEmonthly average≤ .00059 ug/Lall year
4,4'-DDEdaily maximum≤ .0012 ug/Lall year
Aldrinmonthly average≤ .00013 ug/Lall year
Aldrindaily maximum≤ .00026 ug/Lall year
.alpha.-BHCmonthly average≤ .0039 ug/Lall year
.alpha.-BHCdaily maximum≤ .0078 ug/Lall year
.beta.-BHCmonthly average≤ .014 ug/Lall year
.beta.-BHCdaily maximum≤ .028 ug/Lall year
.gamma.-BHCmonthly average≤ .019 ug/Lall year
.gamma.-BHCdaily maximum≤ .038 ug/Lall year
Chlordane [tech mix. and metabolites]monthly average≤ .00057 ug/Lall year
Chlordane [tech mix. and metabolites]daily maximum≤ .0011 ug/Lall year
Dieldrinmonthly average≤ .00014 ug/Lall year
Dieldrindaily maximum≤ .00028 ug/Lall year
Endrinmonthly average≤ .029 ug/Lall year
Endrindaily maximum≤ .059 ug/Lall year
Toxaphenemonthly average≤ .00016 ug/Lall year
Toxaphenedaily maximum≤ .00033 ug/Lall year
Heptachlormonthly average≤ .00021 ug/Lall year
Heptachlordaily maximum≤ .00042 ug/Lall year
Heptachlor epoxidemonthly average≤ .0001 ug/Lall year
Heptachlor epoxidedaily maximum≤ .0002 ug/Lall year
Methoxychlordaily maximumreport only (ug/L)all year
PCB-1221daily maximumreport only (ug/L)all year
PCB-1232daily maximumreport only (ug/L)all year
PCB-1242daily maximumreport only (ug/L)all year
PCB-1248daily maximumreport only (ug/L)all year
PCB-1254daily maximumreport only (ug/L)all year
PCB-1260daily maximumreport only (ug/L)all year
Polychlorinated biphenyls [PCBs]monthly average≤ .00017 ug/Lall year
Polychlorinated biphenyls [PCBs]daily maximum≤ .00034 ug/Lall year
Hexachlorobenzenemonthly average≤ .00075 ug/Lall year
Hexachlorobenzenedaily maximum≤ .0015 ug/Lall year
Picloramdaily maximumreport only (ug/L)all year
Chloridedaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
2,4-D SALTS AND ESTERSdaily maximumreport only (ug/L)all year
Di[2-ethylhexyl] adipatedaily maximumreport only (ug/L)all year
Endothalldaily maximumreport only (ug/L)all year
Perchlorate [ClO4]daily maximumreport only (ug/L)all year
4-Chloro-3-methylphenoldaily maximumreport only (ug/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Mercury, total recoverablemonthly average≤ .05 ug/Lall year
Mercury, total recoverabledaily maximum≤ .1 ug/Lall year
1,3-Dichloropropenemonthly average≤ .5 ug/Lall year
1,3-Dichloropropenedaily maximum≤ 1 ug/Lall year
Sulfatedaily maximumreport only (ug/L)all year
Styrenedaily maximumreport only (ug/L)all year
Chloroethanedaily maximumreport only (ug/L)all year
Pass/Fail Static 4 Day Chronic Raphidocelis subcapitatadaily maximumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasdaily maximumreport only (pass=0;fail=1)all year

How strict are these limits?

Cited limits by parameter: California's rules and the federal ones.

Same industry: the 3 Mining and Quarrying of Nonmetallic Minerals permits in California.

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Your permit document is the final word. As JSON: /api/v1/permits/CA0047791 · MCP: https://passage-data.com/mcp