Questa Baseline and Pre-Mining Ground-Water 

Quality Investigation. 3. Historical Ground-Water 

Quality for the Red River Valley, New Mexico 

Water-Resources Investigations Report 03-4186 

Prepared in Cooperation with the New Mexico Environment Department 

U.S. Department of the Interior 

U.S. Geological Survey 
Questa Baseline and Pre-Mining GroundWater Quality Investigation. 3. Historical 

Ground-Water Quality for the Red River 

Valley, New Mexico 

By Sara H. LoVetere, D. Kirk Nordstrom, Ann S. Maest, and Cheryl A. Naus 

U.S. GEOLOGICAL SURVEY 

Water-Resources Investigations Report 03-4186 

Prepared in cooperation with the 

NEW MEXICO ENVIRONMENT DEPARTMENT 

Boulder, Colorado


2004

U.S. DEPARTMENT OF THE INTERIOR 

GALE A. NORTON, Secretary 

U.S. GEOLOGICAL SURVEY 

Charles G. Groat, Director 

The use of firm, industry, trade, and brand names in this report is for identification purposes 

only and does not constitute endorsement by the U.S. Geological Survey, nor impute 

responsibility for any present or potential effects on the natural resource. 

For additional information write to: Copies of this report can be purchased from: 

Chief, Branch of Regional Research U.S. Geological Survey 

U.S. Geological Survey Branch of Information Services 

Denver Federal Center Denver Federal Center, 

Box 25046, MS-418 Box 25286 

Denver, Colorado 80225 Denver, Colorado 80225-0286 
CONTENTS


Page


Abstract.................................................................................................................................................................................. 1


Appendix 1. Complete historical ground-water quality database, Red River Valley, New Mexico,


1982-2002 (on CD)


Introduction ........................................................................................................................................................................... 1


Physical setting ............................................................................................................................................................ 7


Climate and vegetation ................................................................................................................................................ 7


Geology ....................................................................................................................................................................... 8


Surface water ............................................................................................................................................................... 9


Ground water ............................................................................................................................................................... 9


Mine history and ground-water development.............................................................................................................. 10


Acknowledgments ....................................................................................................................................................... 11


Ground-water quality database.............................................................................................................................................. 11


Well information.......................................................................................................................................................... 29


Compilation of complete database .............................................................................................................................. 29


Accuracy of data .......................................................................................................................................................... 31


Quality control on database entries ............................................................................................................................. 32


Compilation of database for selected analyses ............................................................................................................ 32


Historical ground-water quality............................................................................................................................................. 33


Concentrations and time-series relations..................................................................................................................... 34


Saturation indices ........................................................................................................................................................ 41


Problems and assumptions........................................................................................................................................... 45


Summary and conclusions..................................................................................................................................................... 46


References ............................................................................................................................................................................. 46


FIGURES 

1-4. Maps showing: 

1. Red River Valley, mine site, and study area...................................................................................................... 2


2. Drinking water, irrigation, monitoring, and production wells between the Questa Ranger Station


and the mill area........................................................................................................................................... 4


3. Drinking water, monitoring, and production wells in Columbine Park and at the toe of Sugar Shack


South waste-rock pile .................................................................................................................................. 5


4. Drinking water, monitoring, and private wells west of Straight Creek or east of the town of Red River ........ 6


5. Graph showing frequency distribution of speciated charge imbalance.................................................................... 33


6-18. Plots showing:


6. Calcium concentrations in relation to sulfate concentrations for all data......................................................... 36


7. Calcium concentrations in relation to sulfate concentrations, 25 millimoles per liter or less .......................... 36


8. Magnesium concentrations in relation to calcium concentrations.................................................................... 37


9. Selected major ions from well MMW-7 in relation to time for (a) magnesium concentrations, 

(b) sulfate concentrations, and (c) fluoride concentrations.......................................................................... 38


10. Speciated charge imbalance in relation to time at well MMW-7...................................................................... 39


11. Beryllium concentrations in relation to aluminum concentrations................................................................... 40


12. Cadmium concentrations in relation to zinc concentrations............................................................................. 40


13. Saturation indices for gypsum in relation to sulfate concentrations................................................................. 42


14. Saturation indices for calcite in relation to pH ................................................................................................. 42


15. Fluorite saturation indices in relation to fluoride concentrations ..................................................................... 43


16. Gibbsite, amorphous (am), and crystalline (c) saturation indices in relation to pH ......................................... 43


17. Saturation indices for manganite in relation to pH ........................................................................................... 44


18. Rhodocrosite saturation indices in relation to pH............................................................................................. 45


iii 
TABLES 

1. Red River monthly climate summary from January 1915 to December 2002 ........................................................ 7


2. Original sources of and analytical information ....................................................................................................... 12


3. Well information...................................................................................................................................................... 18


4. Symbols for table 6 and appendix 1 ........................................................................................................................ 30


5. Characteristics of wells with water quality that generally lies outside trends in figures 6-15 ................................ 35 


6. Selected historical ground-water quality analyse s (on CD) 

Front cover photograph taken by Philip Verplank 

iv 
Explanations and Abbreviations 

--- (not analyzed or not measured) 

AOC (Administrative order on consent) 

AVIRIS (Airborne Visible/InfraRed 

Imaging Spectrometer) 

AWWT (Advanced Waste Water 

Treatment facility) 

BC (Bitter Creek) 

C (Celsius) 

CD (Compact disc) 

C.I. (Charge imbalance) 

COD (Chemical oxygen demand) 

DB (Database) 

DP-1055 (Discharge permit 1055) 

EQP (EQ plot file) 

GW (Ground water) 

IAP (Ion activity product) 

ICP (Inductively coupled plasma) 

ID (Identification)

IDL (Instrument detection limit) 

J (estimated concentration) 

Ksp (Solubility product) 

km (Kilometer) 

L (Liter) 

m (Meter) 

MC (Molycorp, Inc.) 

meq/L (milliequivalents per liter) 

mg/L (milligrams per liter) 

mM (millimoles per liter)

MMW (Mine monitoring well) 

PS/cm (microsiemens per centimeter at 

25 degrees Celsius) 

Pm (micrometers) 

NAD (National American Datum) 

ND (Non-detect) 

NGVD (National Geodetic Vertical 

Datum) 

NMED (New Mexico Environment 

Department) 

NMHD (New Mexico Department of 

Health) 

No. (Number) 

OSE (Office of the State Engineer) 

QA/QC (Quality Assurance/ Quality 

Control) 

QSP (quartz, sericite, pyrite) 

PWS (Public water supply) 

RGC (Robertson GeoConsultants) 

RL (Reporting limit) 

SAP (Sampling and Analysis Plan) 

SC (Straight Creek) 

Spec Cond (Specific conductance) 

SD (Standard deviation) 

SI (Saturation index) 

SMA (Souder Miller and Associates) 

SOP (Standard Operating Procedure) 

SPRI (South Pass Resources, Inc.) 

SRK (Steffen Robertson and Kirsten) 

STORET (U.S. Environmental 

Protection Agency Storage and 

Retrieval database) 

TAL (Target analyte list) 

Temp (Temperature) 

TDS (Total dissolved solids) 

TKN (Nitrogen kjedahl) 

TSS (Total suspended solids) 

U (not detected at the reporting limit) 

USEPA (U.S. Environmental Protection 

Agency) 

USFS (U.S. Forest Service) 

USGS (U.S. Geological Survey) 

V (volts) 

WATEQ4F (Water equilibrium model) 

v 
CONVERSION FACTORS, ABBREVIATIONS, AND DATUM


Multiply By To obtain 

cm (centimeter) 3.937 X 10-1 in. (inch) 

m (meter) 3.281 X 100 ft (foot) 

m (meter) 1.094 X 100 yd (yard) 

km (kilometer) 6.214 X 10-1 mi (mile) 

g (gram) 3.527 X 10-2 oz (ounce) 

km2 (square kilometer) 3.861 X 10-1 mi2 (square mile) 

L (liter) 2.642 X 10-1 gal (gallon) 

mg (milligram) 3.530 X 10-5 oz (ounce) 

Water and air temperature are given in degrees Celsius ( ̊C), which can be converted to degrees Fahrenheit ( ̊F) by use of the following


equation:  ̊F = 9/5 ( ̊C) + 32.


Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD29). The geodetic datum was


derived from a general adjustment of the Sea Level Datum of 1929, which is now considered superseded as the national standard


(http://water.usgs.gov/usgs/publishing/Memos/memo2002_01.html).


Horizontal coordinate information is referenced to the North American Datum of 1927 (NAD 1927), which also is considered superseded 

as the national standard. 

Factors for converting International System of Units to English Units are provided above to four significant figures. In this report, however, 

numerical results are shown to three or fewer figures because sample collection and analysis methodology were not consistently reported 

by the original sources where the data were obtained. 

vi 
QUESTA BASELINE AND PRE-MINING GROUND-WATER 

QUALITY INVESTIGATION. 3. HISTORICAL GROUND-WATER 

QUALITY FOR THE RED RIVER VALLEY, NEW MEXICO 

By Sara H. LoVetere, D. Kirk Nordstrom, Ann S. Maest, and Cheryl A. Naus 

ABSTRACT 

Historical ground-water quality data for 100 wells in the Red River Valley between the 

U.S. Geological Survey streamflow-gaging station (08265000), near Questa, and Placer Creek 

east of the town of Red River, New Mexico, were compiled and reviewed. The tabulation 

included 608 water-quality records from 23 sources entered into an electronic database. Groundwater quality data were first collected at the Red River wastewater-treatment facility in 1982. 

Most analyses, however, were obtained between 1994 and 2002, even though the first wells were 

developed in 1962. 

The data were evaluated by considering (a) temporal consistency, (b) quality of sampling 

methods, (c) charge imbalance, and (d) replicate analyses. Analyses that qualified on the basis 

of these criteria were modeled to obtain saturation indices for gypsum, calcite, fluorite, gibbsite, 

manganite, and rhodocrosite. Plots created from the data illustrate that water chemistry in the 

Red River Valley is predominantly controlled by calcite dissolution, congruent gypsum 

dissolution, and pyrite oxidation. 

INTRODUCTION 

Mining activities in the Red River Valley, New Mexico, may have affected ground-water 

quality. New Mexico law states that part of a closeout plan for mining sites must include 

compliance with ground-water quality standards unless ground-water quality exceeds the 

standards prior to mining (S. McKitrick, New Mexico Environment Department, written 

commun., 2000). The Questa baseline and pre-mining ground-water quality investigation began 

with a Joint Powers Agreement between the U.S. Geological Survey (USGS) and the New 

Mexico Environment Department (NMED) on April 30, 2001. The main objective of the USGS 

component of the investigation is to infer the pre-mining ground-water quality at the Molycorp, 

Inc. Questa molybdenum mine site in the Red River Valley (Nordstrom, 2002). Many groundwater quality analyses had been obtained prior to the involvement of the USGS, but these had 

never been compiled or evaluated for quality assurance and quality control (QA/QC). The 

purpose of this report is to compile and evaluate these data for the Red River Valley between the 

Questa Ranger Station (USGS streamflow-gaging station 08265000) near Questa, New Mexico, 

and Placer Creek southeast of the town of Red River (fig. 1), to identify any spatial and temporal 

trends in the data, and to obtain preliminary information on water-rock interactions from 

speciation and saturation index calculations through geochemical modeling. 

1

2

A considerable number of ground-water analyses are available, but the data are in 

numerous unpublished documents, including the mining company’s archived documents, 

consultants’ reports, students’ theses, wastewater-treatment facility compliance letters, NMED 

files, and individual laboratory reports. Historical ground-water quality information is valuable 

because it presents the range of ground-water compositions found in the Red River Valley and 

allows for a preliminary evaluation of major mineral controls on ground-water chemistry. In this 

report, “historical” data are defined as all data existing from the earliest available record 

(November 1982) to August 2002. The collected data were divided into two databases and listed 

in two tables. One table (app. 1) contains all water-quality and related data that were compiled; 

it is referred to as the “complete database.” The other table (table 6) is a subset of the complete 

database that contains selected analyses with documented accuracy information used for 

geochemical modeling and evaluation purposes. Both appendix 1 and table 6 are located on the 

compact disc (CD) in the back of this report. 

The Town of Red River Advanced Waste Water Treatment (AWWT) facility began onsite 

annual monitoring of ground-water quality at the facility in 1982, which increased to biannual 

monitoring for compliance with the NMED in 1985. The mining company collected waterquality data from mill wells, private wells, and monitoring wells starting in 1992, 1993, and 

1994, respectively. The U.S. Forest Service (USFS) performed preliminary assessments/site 

inspectionsfor the Bitter Creek, Placer Creek, and Pioneer Creek watershedsin 2001. The USFS 

water-quality results were added to the database described in this report because the wells 

represent the most upstream data available even though the wells lie outside the study area. 

Aquifer-property and water-quality data for campground, mine monitoring, private, 

production, and public-supply wellslocated within the study area were identified geographically 

by subbasin, waste-rock pile, or creek. Named geographic locations include Capulin Canyon, 

Columbine Park, the Mill area, Goathill Gulch, Sulphur Gulch, Spring Gulch, and Blind Gulch. 

Additional monitoring wells are located within or below rock piles at Sugar Shack West, Middle 

Dump, and Sugar Shack South (fig. 2). Private and supply wells are located along Hansen, 

Pioneer, Straight, Hottentot, and Bitter Creeks. 

Figure 1 is a map of the Red River Valley and study area identifying the creeks, gulches, 

alteration scars, well types, and six wells upstream from the study area. Figure 2 is a detailed 

map of wells in the mine site. Figure 3 is a detailed map of Columbine Park near the mine site. 

Figure 4 illustrates wells near the town of Red River. 

Several challenges were encountered during compilation including: (1) non-uniform 

collection, reporting, and interpretation of water analyses; (2) missing identification of 

employed analytical laboratories and analytical results; (3) incomplete or missing analytical 

values in reports; (4) discrepancies in reported aquifer, field, and analytical data; (5) absent 

sample collection or analysis methods and QA/QC information; and (6) nearly illegible 

analytical data due to small font size and poorly reproduced copies. After all the available data 

were obtained and organized, 100 wells with a total of 608 records of water-quality and aquifer 

information from 23 sources were catalogued in an Microsoft Access database. Water-quality 

data were obtained for 94 wells, and 6 additional wells were installed as dry wells. Only 19 of 

the available sources reported original data; the remaining 4 cited analytical results from other 

sources. 

3

4

5
Figure 4. Drinking water, monitoring, and private wells east of Straight Creek or west of the town of Red River. 

6
Physical Setting 

The study area is located in Taos County in north-central New Mexico on the western 

slope of the Taos Range of the Sangre de Cristo Mountains within Carson National Forest. The 

mountainous area is rugged with steep slopes and V-shaped valleys, and bedrock has been 

locally altered by hydrothermal processes. The study reach is in the Red River Valley between 

the Questa Ranger Station (elevation 2,280 m) and the town of Red River (elevation 2,646 m). 

The Molycorp, Inc. Questa molybdenum mine, referred to as the “mine site,” is located on the 

north side of State Highway 38 and the Red River, 13 km east of the Ranger Station. The mine 

site is approximately 18 km2 and encompasses three tributary valleys to the Red River: Capulin 

Canyon, Goathill Gulch, and Sulphur Gulch, from west to east, respectively (fig. 1). 

Mining activities produced extensive underground workings and an open pit of 

approximately 7.8 km2

 near or in Sulphur Gulch. Waste-rock piles cover steep slopes on the 

north side of the Red River between Capulin Canyon and Spring Gulch (a tributary valley of 

Sulphur Gulch). Hydrothermally altered bedrock is found in Capulin, Goathill, Sulphur, 

Hansen, Straight, and Hottentot drainages (fig. 1). Weathering of extensively altered rock has 

resulted in steep, highly erosive, sparsely vegetated “alteration scars” that are visible from the 

ground and in aerial photographs. 

Climate and Vegetation 

The Red River Valley is located in a semiarid desert that receives precipitation throughout 

the year and sustains moderate biodiversity. Between 1915 and 2002, the annual average 

temperature was 4 oC; annual average precipitation and snowfall were 52 cm and 370 cm, 

respectively. Daily temperatures generally fluctuated by 18 oC throughout the year (table 1) 

(Western Regional Climate Center, 2003). 

Table 1. Red River monthly climate summary from January 1915 to December 2002 

[C, degrees Celsius; cm, centimeters; Max., maximum; Min., minimum] 

Average Max. Average Min. Average Total Average Total 

Temperature Temperature Precipitation Snow Fall AverageSnow 

Month (C) (C) (cm) (cm) Depth (cm) 

January 2.5 -15.4 2.7 50.8 22.9

February 4 -13.3 3 54.1 22.9

March 6.7 -9.7 4.5 74.4 17.8

April 12 -5.6 4.4 55.4 5.1

May 16.9 -1.8 4.4 18.5 0

June 22.6 1.8 3.2 0.3 0

July 24.4 4.9 7.4 0 0

August 23.2 4.6 8 0 0

September 20.4 0.9 4.2 1.3 0

October 14.8 -3.8 3.8 21.1 0

November 7.2 -9.9 3.4 47 5.1

December 3.1 -14.4 2.9 48.3 15.2

Annual 13.2 -5.2 52 371 7.6 

Data obtained from the Western Regional Climate Center, 2003. 

7 
Climate and vegetation vary greatly within short distances because of differences in 

topography, weather, and sediment composition. The altitude in the study area ranges from 

2,280 m at the Ranger Station to 3,277 m at the crest of the Taos Range. Orographic effects of 

mountainous topography lead to precipitation on the windward slopes and localized storms 

within tributary valleys. Major precipitation events include summer thunderstorms and winterspring snowstorms. Thunderstorms are responsible for mass wasting in hydrothermally altered 

areas, producing debris flows that potentially affect vegetation, alluvial aquifers, and the Red 

River. Winter snowpack contributes to ground-water recharge through snowmelt infiltration and 

runoff. 

Hillslope composition varies among hydrothermally altered sediments, waste-rock 

overburden, and moderate soil development. Some scar areas and hillslopes with soil horizons 

support primarily Ponderosa pines (Pinus ponderosa), Limber pines (Pinus flexius), and 

Douglas fir (Pseudotsuga taxifolia). Willows (Salix spp.), cottonwoods (Populus spp.), primary 

vegetation, and flowering vegetation grow along the riverbank. 

Geology 

Ground water passes through and may geochemically interact with the various types of 

earth materials discussed in thissection. These include fractured bedrock,soil and alluvium, and 

waste rock. They are discussed separately because they have differing origins, geochemical and 

hydraulic properties, and locations in the landscape. This section summarizes the work of 

Schilling (1956), Rehrig (1969), Lipman (1981), and Meyer and Leonardson (1997), in addition 

to observations made by the USGS scientists currently working at the site. 

The Taos Range of the Sangre de Cristo Mountains is composed of Precambrian 

metamorphic assemblages and granitic intrusives overlain by Tertiary volcanics. Late Oligocene 

to early Miocene granitic plutons and associated hydrothermal alteration were the source of 

molybdenite and other sulfide mineralization. 

The primary mineralogy of most of these units has been modified by hydrothermal 

solutions, producing a variety of secondary mineral phases. The types of minerals formed are a 

function of the initial mineralogy and the degree of alteration. The three principal alteration 

zones include highly altered quartz-sericite-pyrite (QSP), less altered argillic (dominantly 

kaolinite) zones, and mildly altered propylitic zones(containing calcite mineralization). Calcite, 

goethite, and sericite are widely distributed in the Red River Valley as revealed by the Airborne 

Visible/Infrared Imaging Spectrometer (AVIRIS) study (Livo and Clark, 2002). Calcite is an 

important mineral in the Red River Valley because its dissolution effectively neutralizes acid 

inflows so that pH values in the Red River tend to be alkaline (pH 7-8). Gypsum is commonly 

found throughout the Red River Valley as a secondary product of acid-sulfate weathering from 

pyrite oxidation reacting with calcite. 

The Red River Valley is located along the southern edge of the Questa volcanic caldera 

and contains complex structural features and extensive hydrothermal alteration. In the Red River 

Valley, most of the visible rocks are Tertiary volcanics with smaller areas of Precambrian 

metamorphics and granitic rocks. The volcanics are primarily of intermediate to felsic 

composition (andesites to rhyolites), and they have been intruded by quartz monzonites and 

granites. The hydrothermally altered tuffs often contain pyrite mineralization (generally 1-3 

percent). 

8

Minerals in subsurface samples collected and described during mineral exploration and 

mining are biotite, calcite, chalcopyrite, fluorite, galena, molybdenite, pyrite, quartz, 

rhodocrosite, and sphalerite. Mining activities produced approximately 328 million tons of rock 

overburden in Capulin Canyon, along the north slope of the Red River, and in Goathill, Sulphur 

and Spring Gulches (Steffen Robertson & Kirsten, 1995). The abundant minerals in waste-rock 

samples include chlorite, gypsum, illite, illite-smectite, jarosite, kaolinite, and muscovite (Gale 

and Thompson, 2001). 

Surface Water 

The Red River originates at Wheeler Peak at an elevation of 4,098 m, flows about 13 km 

north to the town of Red River, and continues for 34 km west to the town of Questa where it 

ultimately discharges to the Rio Grande. The drainage area upstream from the Questa Ranger 

Station is 293 km2. Streamflow usually peaks from late May to mid-June; snowmelt-related 

flows begin to increase in late March through mid-April. Summer thunderstorms are prevalent 

in July and August. The mean annual discharge of the Red River at the Questa Ranger Station 

ranged from 12.8 to 103 cfs between 1930 and 2001, and the average daily discharge ranged 

from 2.5 to 557 cfs between 1965 and 2001 (U.S. Geological Survey, 2002). 

The main drainages in the vicinity of the mine site are Capulin Canyon, Goathill Gulch, 

and Sulphur Gulch on the north side of the Red River (fig. 1). Upstream from the mine site, Little 

Hansen, Hansen, Straight, and Hottentot Creeks drain scar areas, and Mallette and Bitter Creeks 

drain non-scar areas on the north side of the Red River. Bear, Columbine, Pioneer, and Placer 

Creeks drain largely unmineralized land on the south side of the river. 

Seeps and shallow alluvial ground water discharge to the Red River, rendering it a gaining 

stream over much of its length (Smolka and Tague, 1989). About 60 ephemeral seeps and 

springs arise along the banks of the Red River between the Questa Ranger Station and the town 

of Red River (South Pass Resources, Inc., 1994, 1995b; Steffen Robertson & Kirsten, 1995; 

Slifer, 1996; Robertson GeoConsultants, Inc., 2000a, 2001a). The majority of seeps and springs 

can run acidic (pH 2-4) with high specific conductance, high total dissolved solids (TDS), and 

elevated metal and sulfate concentrations. Springs downgradient from scar and mined areas on 

the north side of the Red River often have a milky aluminum hydroxide precipitate that affects 

the color and turbidity of the river (Vail Engineering, Inc., 1989). 

Ground Water 

Ground water is influenced by the climate, geology, and anthropogenic activities in the 

Red River Valley. Three major types of water-bearing units are present: fractured bedrock, 

waste-rock piles, and soil and alluvium, all of which contain variable amounts of acid- and 

metal-generating minerals (Kirk Vincent, U.S. Geological Survey, written commun., 2003). 

Bedrock constitutes the largest aquifer in the study area in terms of rock mass but probably 

contains only small amounts of ground water because of low porosity and hydraulic 

conductivity that are controlled by fractures. Waste-rock piles and scars with associated debris 

fans are geochemically reactive, have high porosity, and have a fast rate of infiltration. 

9

Alluvial aquifers are restricted in area and thickness compared with bedrock aquifers and 

have variable compositions. Streamflow and hillslope processes have been eroding the 

mountainous study area throughout the late Cenozoic age; deposits of unconsolidated sediments 

are found in only specific locations and are relatively small in volume. Rock outcrops are 

relatively rare, and hillslope soils are thin and composed of materials eroded from immediately 

upslope. Debrisfans are located at the mouths of most tributaries and are composed ofsediments 

shed from their tributary watersheds. Where the tributary watersheds contain alteration scars, 

the debris fans are large, active and contain both coarse- and fine-grained debris-flow sediments. 

The chemistry of these sediments likely reflects the chemistry of their rapidly eroding and 

altered erosion scars. Sediments deposited by the Red River, in contrast, generally consist of 

well-washed sandy gravel and are composed of a mix of the lithologies found in the entire Red 

River watershed. The largest debris fans caused the aggradation of the riverbed behind the fans 

during the Quaternary age. Thus, water flowing in the shallow alluvial aquifers likely passes 

alternately through Red River alluvium and debris-fan alluvium. Both the Red River alluvium 

and debris-fan alluvium are less than several hundred meters wide and less than 60 m thick (Kirk 

Vincent, written commun., 2003). 

Alluvial ground water is calcium-sulfate water, whereas bedrock ground water is generally 

calcium-magnesium-sulfate water. Ground water downgradient from the waste-rock dumps and 

scars has acidic pH values and elevated metal concentrations compared with ground water 

upgradient from the altered areas. Most wells developed in the Red River Valley were installed 

to monitor water quality downgradient from mining operations (waste-rock dumps and tailings 

piles) and (or) scar areas. 

Mine History and Ground-Water Development 

A pair of prospectors first discovered molybdenite in Sulphur Gulch in 1914. Small-scale 

underground mining took place until 1956 when a “large tonnage, low-grade ore body” was 

discovered in Sulphur and Goat Hill Gulches (URS, 2001), at which time operations switched 

to exploration and development of an open-pit mine. 

In 1962, the first mining-related wells were installed. Designed to produce water for mill 

operations, Mill Wells #1 and 1A were dug less than 500 ft north of the Red River at the mill 

site. Rock overburden of Sulphur Gulch first was removed for open-pit operations in 1964, and 

molybdenite was extracted from the open pit within a year. 

During 1965, production wells were installed in Columbine Park to supply cleaner water 

to the mill site than that produced at the mill wells. The mill was soon expanded to process 

10,000 tons of rock per day. A pipeline was constructed to transport tailings slurries about 23 

km off site to an area west of the town of Questa in the Rio Grande Valley. The increased activity 

at the Questa mine spurred Federal regulatory agencies to begin inspecting the site in 1966 

through baseline and surface-water surveys (Slifer, 1996). 

In 1983, open-pit mining ceased and operations in the new phase of underground mining 

were initiated, which effectively halted the dumping of waste rock in the valley. An estimated 

328 million tons of overburden were deposited in Capulin Canyon, along the north slope of the 

Red River, and in Goathill, Sulphur, and Spring Gulches between 1964 and 1983 (Steffen 

Robertson & Kirsten, 1995). 

10

NMED requested that the mine operator submit discharge-plan applications in 1992 for 

(1) the mine waste-rock piles and (2) the reintroduction of ground water into the mine (S. 

McKitrick, written commun., 2000). The discharge permit preparation served as the impetus for 

the installation of monitoring wells on the mine site (Slifer, 1996). In 1994, Molycorp installed 

12 monitoring wells on the mine site to characterize and compare water quality between scar 

areas (hydrothermally altered zones) and areas affected by mining activities (South Pass 

Resources, Inc., 1995b). The U.S. Environmental Protection Agency (USEPA) and the mine 

operator conducted an expanded site inspection in 1994. Sample splits were collected from the 

wells and sent to three different laboratories. Because trace metals were discovered in the 

ground water in concentrations exceeding New Mexico standards, the mine operator continued 

to sample the wells. 

A discharge permit, DP-1055, was issued for the mine site in November 2000. Quarterly 

sampling of wells commenced in June 2001 when the USEPA defined the appropriate methods 

for sample collection and analysis in the Standard Operating Procedures (SOP) and Remedial 

Investigation and Feasibility Study (U.S. Environmental Protection Agency, 2002). 

Acknowledgments 

This report would not have been possible without the helpful assistance of Molycorp’s 

employees. We thank Bruce Walker and Anne Wagner (Molycorp) for providing information 

and requested documents. We appreciate the assistance of Armando Martinez (Molycorp) for 

answering our numerous inquiries. We also are grateful for the cooperation of the New Mexico 

Environment Department, U.S. Forest Service, and the Town of Red River AWWT facility. Mike 

Reed (NMED), Lisa Goodman (USFS), and Russell Church (AWWT) were especially helpful 

in providing documents and site information and in clarifying explanations. Blaine McCleskey 

and Jim Ball (USGS) helped with the WATEQ4F code operation and provided helpful hints on 

Excel. Kirk Vincent and Philip Verplanck (USGS) helped with the geology and ground-water 

background information. Michael Sharp (Fuzzy Dog Media) donated his time to help import the 

compiled data from scores of Excel tables into an Access database. This work also would not 

have been possible without the support of the USGS National Research Program. 

GROUND-WATER QUALITY DATABASE 

To create a complete database of historical ground-water quality data, the USGS accessed 

the Molycorp archives, requested pertinent information from the USFS and NMED, and 

searched GeoRef, Chemical Abstracts, and USEPA Storage and Retrieval (STORET) databases. 

The gathered reports were then organized into a bibliography, and water-quality information was 

extracted and entered into a new database. Information related to sample collection, handling, 

preservation, laboratory, and methodology were compiled for each data source (table 2). 

Specific well information, including geographic location, aquifer type, completion date, and 

well type, can be found in table 3. A subset of the complete database (table 6, on CD) contains 

selected analyses that were used for geochemical modeling and evaluation in this report. 

11

---

Table 2. Original source and analytical information

[ACZ, New Mexico State Laboratory; Alk, alkalinity; CD, compact disc; CEP, Controls for Environmental Pollution; COD, chemical oxygen demand; commun., communication; DB, database; ETC, Molycorp laboratory; GW, ground water; ID, identification; MC, Molycorp, Inc.; Pm, micrometer; MMW, mine monitoring well; NMED, New Mexico Environment Department; no., number; PWS, public water supply;

RGC, Robertson GeoConsultants, Inc.; SAP, sampling and analysis plan; SLD, Scientific Laboratory Division; SMA, Souder Miller and Associates; SOP, standard operating procedure; specific conductance; SWOK, southwestern Oklahoma; TAL, target analyte list; TDS, total dissolved solids; Temp, Temperature; TKN, nitrogen Kjedahl; TSS, total suspended solids; 

USEPA, U.S. Environmental Protection Agency; wkst, worksheet; ---, no data; <, less than]

Source ID 1 Source Prepared Sample events-collection Collection methods Filtered 

for dates 

Kent, S., 1995, Expanded site USEPA, In accordance with SOP's for NMED GW Quality Kent 1995 inspection report on Molycorp Superfund Nov-94 Bureau Yes Inc., Oct. 20, 36 p. 

Followed recommendation of SRK from July 13, 1999, Molycorp, Inc., CD, written until USEPA SAP-SOP July 2001; field blanks, field 

12MC CD commun., 2002, Official NMED 2001-2002 rinsate blanks, field duplicates taken twice/quarter for 0.45-Pm pore database in compliance with GW. Trip blanks taken only for volatile/semi-volatile size DP-1055 organic compounds 

MC DB URS, written commun. 1/27/97, 6/12/97, 7/9/97,

MC, URS 

Hydrologic

Sole-data source for data Comp- from 7/16/94, 10/29/96, rehensive ---

11/10/97, 5/11/98, 3/23/00

report 

Molycorp, Inc., written Nov-94, Jun-95, Apr-96, Not officially reported; SMA observed on July 1997 MMW wkst commun., in-house unofficial NMED Aug-96, Jan-97, Jan-00, "no written protocol" Yes monitoring Feb-00 

MC and NMED collected samples but did not report

NMED ACZ Contract Lab, written NMED Jun-97 - Jun-98, May-00 methodology; post Jan-00 used 0.45-Pm filter, HNO3 Yes commun. or H2SO4 preservation 

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
Table 2. Original source and analytical information

Source ID 1 Source Prepared Sample events-collection Collection methods Filtered 

for dates 

13

NMED Scientific Laboratory Division, NMED Jun-98, Jan-00 --- --- written commun. Paragon lab Paragon Analytics, written AWWT Mar-03 --- --- sheet commun. 

Public New Mexico Public Water PWS System, 1999-2001 Water May-99, Oct-01, Nov-01 --- Yes Record 

Robertson GeoConsultants, Original data (GW-8, 9, RGC 8/10 2000b, report no. 052008/10 MC, NMED Private Cabin well) --- YesRobertson GeoConsultants, Original data (appendix A: 0.45-Pm pore RGC 8/12 2001a, report no. 052008/12 MC, NMED electronic database --- size Mar - Nov 2000) 

Slifer, D., 1996, Red River GW NMED, In accordance with SOP's for NMED GW Quality 0.45-Pm pore Slifer 1996 Nov-94 investigation, March, 26 p. USEPA Bureau; see SPRI 1995 and WC 1996 size 

Souder Miller and Associates, Jun-97 SMA observed 1997, GW sampling Molycorp staff collected routine samples with New filter per SMA recommended practices, MC sampling of two mine undocumented protocol (SMA, 1997) well 

July 17, 2 p. monitoring wells 

South Pass Resources, Inc.,

1995b, Progress report on the Micro purged 3-5 well volumes prior to sample 0.45-Pm pore SPRI 1995 3 geology, hydrology, and water MC, NMED Nov-94 collection size quality of the mine area,

April 21, 19 p. 

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
Table 2. Original source and analytical information

Source ID 1 Source Prepared Sample events-collection Collection methods Filtered 

for dates 

Town of Red River files and Followed Standard Methods Water and Wastewater

TRR letters of compliance with NMED 1984 - present biannually 16th ed. from 1984-1992; followed the 17th and 18th Yes 

NMED, 1984 - present eds. from 1992 - present 

USEPA US Environmental Protection USEPA Jun-99 --- ---memo Agency, 1999 Region 6

Carson Carson National Forest, written USFS commun., 1991 National May-91 --- No Forest 

14

US Department of Agriculture, Carson

USFS Forest Service, 2001a, b, and National May-01, Jun-01 --- ---

2002a, b Forest 

Vail Engineering, 2000, Interim

report -Analysis of acid rock 3/98, 4/98, 10/98, 2/99, 9/99, Vail drainage in the middle reach of MC, NMED 10/99, 3/00, 9/00, 11/00 --- ---

the Red River, July 4

Woodward-Clyde Consultants, 11/7-8/1994 above mine site

1996, Final compilation of (Forest service wells and

WC 1996 3 Molycorp's sample data from MC, NMED AWWT well -GW 8-10) and

sample splits with NMED, below mine site (MMW- 3,

September 7, 10B, 11, and Mill No. 1) 

SPRI collected with NMED protocol. For GW 8, 9:

gloves, dedicated pump/tubing, de-ionized rinse before,

between, after sampling; purged 3 well volumes, 0.45-Pm pore 

collected samples from well tap. For MMW's: gloves, size 

depth to water, pump rate, pH, Spec Cond, Temp while

millipurge; collect sample from dedicated tubing 

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
Table 2. Original source and analytical information 

Source ID 1 Preservation Field parameters Lab parameters Analytical methods Lab 

TDS: EPA 160.1, SO4 & Cl: EPA 300.0, pH & Alk: EPA 310.1, USEPA

Nitric acid to Total and dissolved F: EPA 340.2; Al, Ba, Be, Ca, Cr, Co, Cu, Fe, Mg, Mn, Mo, N, contract

Kent 1995 pH<2, on ice pH, Temp, Spec Cond metals, and anions2 K, Na, V, Zn by EPA 200.7, 200.8; Hg: EPA 245.1; As: EPA Laboratories until arrival at lab 206.2; Cd: EPA 213.2; Pb: EPA 239.2; Se: 3500-Se C, AA- ACZ, then 

Hydride, Si: EPA 206.2; Ag: EPA 272.2 SLD 

15

Nitric acid to Organic, inorganic, Followed Methods for the Chemical Analysis of Waters and

pH, Eh, Temp, Spec dissolved metals, anions2, Wastes, May 1994 procedures. TDS: EPA 160.1; Cl, NO3 & Paragon MC CD pH <2; 4oC Cond, water elevation and volatile organic SO4 : EPA 300.0; Alk: EPA 310.1; F: EPA 340.2; dissolved Analytics 

compounds metals: EPA 200.7; Hg: EPA 245.1 

TDS, F, Al, Ca, Co, Cu,

Fe, Mg, Mn, Ni, K, Na, MC DB --- pH, Spec Cond, Temp Zn, Mo, Ba, Si, Be, Cd, --- ---

Cr, As, Pb, Alk, SO4, Cl 

pH, Spec Cond, Temp, Dissolved metals, anions2, MMW wkst --- depth to water and --- ---

pump intake and TDS 

1997-1998: Alk: EPA 2320B; Cl: EPA 325.2; F: EPA 340.2;

SO4 : EPA 375.3; TDS: EPA 160.1; Al, Ba, Be, Ca, Cr, Co, Cu,

Dissolved metals, anions2, Fe, Mg, Mn, Mo, N, K, Na, V, Zn by EPA 200.7, 200.8; Hg: ACZ contract NMED Yes ---

and TDS EPA 245.1; As: EPA 206.2; Cd: EPA 213.2; Pb: EPA 239.2; Se: lab 

3500-Se C, AA-Hydride, Si: EPA 206.2; Ag: EPA 272.2;

May-00 same as SLD below

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
--- --- ---

Table 2. Original source and analytical information

Source ID 1 Preservation Field parameters Lab parameters Analytical methods Lab 

TDS: EPA 160.1, SO4 & Cl: EPA 300.0, pH & Alk: EPA 310.1, Cations, anions2, TDS, F: EPA 340.2; Al, Ba, Be, Ca, Cr, Co, Cu, Fe, Mg, Mn, Mo, N, and trace metals NMED --- ---

depending on request K, Na, V, Zn by EPA 200.7, 200.8; Hg: EPA 245.1; As: EPA SLD 206.2; Cd: EPA 213.2; Pb: EPA 239.2; Se: 3500-Se C, AA- from NMED Hydride, Si: EPA 206.2; Ag: EPA 272.2 

TDS: EPA 160.1, Cl & SO4 : EPA 300.0, Alk: EPA 310.1, F: 

Paragon lab EPA 340.2, Al, As, Ba, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Paragonsheet Mn, Ni, K, Se, Ag, V, Zn, Mo, Si, Na by EPA 200.7, Hg: EPA Analytics 

245.1 

PWS --- --- Dissolved metals --- ---

TDS, SO4, Fe, Mn, Cu,

RGC 8/10 Yes pH Zn, Al, Co, Mo, Ni, Cd, --- ---

Cr, F, Pb 

16post Jan-2000 ACZ: Alk: EPA 310.1; Cl: EPA 352.2; F: EPA 

Dissolved metals, anions2, 340.2; SO4 : EPA 375.4 & 300.0; TDS: EPA 160.1; Al, Ba, Be, ACZ, Paragon RGC 8/12 Yes pH and TDS Ca, Cr, Co, Cu, Fe, Mg, Mn, Mo, N, K, Na, V, Zn by EPA Analytics 200.7, 200.8; Hg: EPA 245.1; As: EPA 206.2; Cd: 213.2; Pb: 

239.2; Se: 3500-Se C, AA-Hydride, Si: 206.2; Ag: 272.2 

See SPRI, 1995 and See SPRI, 1995 and WC, Slifer 1996 yes WC, 1996 1996 See SPRI, 1995 and WC, 1996 ACZ, SLD 

SMA --- Spec Cond, pH, Temp --- --- ---

1 mL/L of nitric Temp, Spec Cond, pH,

acid in well volume, weather pH, Spec Cond, TDS, TDS: EPA 160.1; SO4 : EPA 375.4; Alk: EPA 2320B; Cl : EPA ETC Northwest SPRI 1995 3 conditions, well TSS, cations, anions2, and Laboratory in polyethylene observations, and 325.3; total and dissolved metals: CLP Renton, Wash. dissolved metals bottle for metals color and turbidity 

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
Table 2. Original source and analytical information

Source ID 1 Preservation Field parameters Lab parameters Analytical methods Lab

In-house,

Samples analyzed following Methods for the Chemical Analysis Triple Point,

of Waters and Wastes (MCAWW), May 1994 procedures; TDS: Stewart TRR Yes --- SO4, TDS, Cl, TKN, NO3 EPA 160.1, SO4 & Cl: EPA 300.0, Hg: EPA 245.1, metals: EPA Environmental

200.2 & 200.7 Contractors,

CEP, Paragon 

USEPA

--- --- Inorganic - metals Used ICP, method not reported SWOK, Okla. memo

USFS --- --- Total metals and F --- CEP 

17

Ecology and

Environment,

USFS --- No TAL metals Metals: SW6010B, Hg: 7470A Inc.; Analytical

Services

Center; N.Y. 

Total and dissolved CDS Labs, Vail --- pH, Spec Cond, NTU metals, anions, Spec --- Durango Colo. Cond, and pH

Total and dissolved TAL

Nitric acid for First depth to water, metals and dissolved wet

dissolved TAL then Temp, pH and chemistry parameters TDS: EPA 160.1; SO4 : EPA 375.4; Alk: EPA 2320B; Cl: EPA ETC Northwest WC 1996 3 metal analysis Spec Cond measured (Alk, NH4, Cl, COD, 325.3; total and dissolved metals: CLP Laboratory in and sulfuric acid periodically while Renton, Wash.

for wet chemistry purging NO3, NO3, PHO4, P, SO4, TDS) 

1 Refers to Source ID in table 62 Anions refer to alk, SO4, F, Cl 3 Used SPRI (1994) protocol 
18

Table 3. Well Information

[app., appendix; AWWT, Advanced Waste Water Treatment; BC, Bitter Creek; bgs, below ground surface; CD, Compact Disc; CG, Campground; GW, Ground Water; ID, Identification; m, meters; MMW, Mine Monitoring Well; NF, National Forest; NMED, New Mexico Environment Department; No., Number; OSE, Office of the State Engineer; RGC, Robertson GeoConsultants; RR, Red River; SC, Straight Creek; SMA, Souder Miller and Associates; 

SPRI, South Pass Resources, Inc.; USEPA, U.S. Environmental Protection Agency; USFS, U.S. Forest Service; WC, Woodward-Clyde Consultants;WWTP, waste water treatment plant; ---, no data]

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

Also known as GW 10,

RRTP, RR WWTP, Red

AWWT-1 Straight Creek Bedrock Bedrock 4/13/82 66 58 - 64 River Sewage Plant Well, Office of State Engineer Monitoring 

facility well #1, monitoring

well 

Mudflow

from fan Drilling logs and well record Not AWWT-2 Straight Creek Alluvium delta 7/15/91 --- --- from the OSE Office of State Engineer completed 

channel 

4 miles northeast of the town Robertson BC Ranch Bitter Creek 

--- --- --- --- --- of Red River along Bitter GeoConsultants, 2001a, Drinking Well road water Creek road app. A 

Sampled by USFS for

Bitter Creek Hazardous Material U.S. Forest Service, BC-1 --- --- --- --- --- Private watershed Investigation reports on 2001a 

abandoned mines

Sampled by USFS for

Bitter Creek Hazardous Material U.S. Forest Service, BC-2 --- --- --- --- --- Private watershed Investigation reports on 2001a 

abandoned mines

Sampled by USFS for

Black Red River Hazardous Material U.S. Forest Service,

--- --- --- --- --- Private Canyon 1 headwaters Investigation reports on 2002a 

abandoned mines 
19

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

Sampled by USFS for

Black Red River Hazardous Material U.S. Forest Service,

--- --- --- --- --- Private Canyon 2 headwaters Investigation reports on 2002a 

abandoned mines

Sampled by USFS for

Black Red River Hazardous Material U.S. Forest Service,

--- --- --- --- --- Private Canyon 3 headwaters Investigation reports on 2002a 

abandoned mines 

Columbine Kent, S., 1995, Slifer Drinking Columbine CG Alluvium Alluvium 8/30/66 24 --- Owned by Carson NF D., 1996, and Carson CG water National Forest 

Columbine The State Engineer calls this

Columbine Park, Columbine Well No. 2; South Pass Resources,No. 1 Company's Alluvium Alluvium 9/20/65 47 --- Permit Number: RG-12797- Inc., 1995b and Production 

Cabin area X; redrilled in 1971 Molycorp Inc., CD 

Columbine

Columbine Park, The State Engineer calls this South Pass Resources,No. 2 Company's Alluvium Alluvium 9/25/65 43 6.1 - 43 Columbine Well No. 1; Inc., 1995b and Production Permit Number: RG 12797 Molycorp Inc., CD Cabin area 

Davis Sampled by NMED forWell Bitter Creek --- --- --- --- --- Slifer (1996) Slifer, D., 1996 Private Douglas Columbine

--- --- --- --- --- --- Molycorp Inc., CD Drinking Well Park water 

Fagerquist Columbine Alluvium Alluvium 06/27/83 26 --- --- Office of State Engineer Drinking Well Park water 

Fawn Fawn Lakes Alluvium --- 04/09/65 --- --- --- Carson National Forest Drinking Lakes CG CG water 
Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

20

Owned by Carson NF; Drinking GW-8 Junebug CG Alluvium Alluvium 06/11/91 28 --- sampled by Kent (1995), Carson National Forest water WC, and RGC 

Elephant Rock Owned by Carson NF; Drinking GW-9 Alluvium Alluvium 06/11/91 12 --- sampled by Kent (1995), Carson National Forest CG water WC, and RGC 

Robertson Harrison Sampled by NMED for

Well Bitter Creek --- --- --- --- --- Slifer (1996) GeoConsultants, 2001a, Private app. A 

OSE records for RG-12935

indicate another well named

Lab Well Lab Well, which is no Souder Miller and(New Mill Mill area Bedrock Bedrock 11/12/00 40 --- longer in use Although this Associates, 2002a and Production Well) well has been called the Lab Molycorp, Inc., CD

Well, it is a different well

than RG-12935 

Lab Well(old) Mill area Bedrock --- 4/6/01 --- --- No analytical data found Molycorp Inc., CD Production 

South Pass Resources, Mill Well Also called Lower Mill

No. 1 Mill area Alluvium Alluvium 2/24/62 58 0.6 - 46 Well, Molycorp Mill Well Inc., 1995b and Production Molycorp Inc., CD

South Pass Resources, Mill Well Mill area Alluvium Alluvium 1962 54 --- Also called Upper Mill Well Inc., 1995b and Production No. 1A Molycorp Inc., CD 
21

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

Souder Miller and 

Molycorp Associates, 2002a, Company's Also called Company Cabin Slifer, 1996, Steffen Cabin Alluvium Alluvium Fall 1979 31 --- Production Cabin area Well Robertson and Kirsten, Well 1995, and Molycorp,

Inc., CD 

Capulin Mudflow, Souder Miller and MMW-2 Canyon, Valley Colluvium debris flow 8/28/94 21 12 - 18 --- Associates, 2002a Monitoring fill well

Capulin Souder Miller and MMW-3 Canyon Valley Bedrock Andesite 8/26/94 44 32 - 35 --- Associates, 2002a Monitoring 

Mine Shaft #1 Souder Miller and MMW-7 Facility Bedrock Andesite 8/13/94 49 27 - 48 --- Associates, 2002a Monitoring 

East of sewage Souder Miller and MMW-8A pond Bedrock Andesite 8/17/94 49 40 - 46 --- Associates, 2002a Monitoring East of sewage Alluvium- Mudflow, Souder Miller and MMW-8B pond colluvium debris flow 8/24/94 49 24 - 36 --- Associates, 2002a Monitoring 

Gravel/sand

MMW- Sugar Shack overlying South Pass Resources,10A South, valley- Alluvium quartz 7/20/94 44 24 - 40 --- Inc., 1995b Monitoring fill well monzonite

Quartz

monzonite, A potential pathway exists in

MMW- Sugar Shack but the well well MMW-10B for alluvial Souder Miller and10B South Mixed seal was 7/14/94 58 41 - 58 water to mix with bedrock Associates, 2002a Monitoring 

placed in water (SMA, 2002a)

alluvium 

MMW- Sugar Shack Alluvium- Mudflow, Souder Miller and10C South, valley- colluvium debris flow 7/26/94 15 9.6 - 15 --- Associates, 2002a Monitoring fill well 
22

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

Quartz

monzonite, A potential pathway exists in but water- Sugar Shack well MMW-11 for alluvial Souder Miller and MMW-11 South Mixed level 7/17/94 56 44 - 56 water to mix with bedrock Associates, 2002a Monitoring 

response water (SMA, 2002a) indicate it is

alluvial

MMW- Sugar Shack Souder Miller and11A South Alluvium Silty sand 8/11/99 32 26 - 32 --- Associates, 2002a Monitoring 

Sandy

Middle Dump, gravel Well MMW-13 is screened Souder Miller and MMW-13 valley-fill well Mixed overlying 8/9/94 45 32 - 45 across both alluvium and Associates, 2002a Monitoring quartz bedrock (SMA, 2002a)

monzonite 

Sulphur/Spring Colluvium- Souder Miller and MMW-14 Gulch Dump, dry --- 7/31/94 --- --- No analytical data found Associates, 2002a Monitoring valley-fill well 

Sandy Sulphur/Spring gravel Souder Miller and MMW-16 Gulch, valley- Colluvium overlying 7/28/94 30 15 - 27 --- Associates, 2002a Monitoring fill well granite

Sandy

MMW- gravel Souder Miller and17A East of mill Alluvium overlying 9/10/99 29 21 - 27 --- Associates, 2002a Monitoring 

granite 

MMW- Andesite Souder Miller and17B East of mill Bedrock and rhyolite 10/16/99 42 37 - 42 --- Associates, 2002a Monitoring 

MMW- Sugar Shack Souder Miller and18A South Dry --- 8/23/99 --- --- No analytical data found Associates, 2002a Monitoring 
23

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

MMW- Sugar Shack Souder Miller and18B South Bedrock Granite 9/26/99 38 27 - 36 --- Associates, 2002a Monitoring 

MMW- Sugar Shack Gravel with Souder Miller and19A South Alluvium silt and sand 8/10/99 30 24 - 30 --- Associates, 2002a Monitoring 

fractured MMW- Sugar Shack Bedrock andesite 9/25/99 60 50 - 59 --- Souder Miller and Monitoring 19B South 

porphyry Associates, 2002a 

Mine Shaft Gravel, sand Souder Miller and MMW-21 facilities Colluvium and silt 9/23/99 24 16 - 24 --- Associates, 2002a Monitoring 

Sand and 

Mine Shaft gravel with Souder Miller and MMW-22 facilities Colluvium silt, clay and 9/16/99 33 25 - 32 --- Associates, 2002a Monitoring 

cobbles 

MMW- Capulin Sand and Souder Miller and23A Canyon Colluvium gravel 10/10/99 4.3 2.4 - 3.8 --- Associates, 2002a Monitoring 

MMW- Capulin Souder Miller and23B Canyon Bedrock Welded tuff 10/10/99 30 20 - 30 --- Associates, 2002a Monitoring 

Souder Miller and MMW-24 Sulphur Gulch Bedrock Granite 10/1/99 43 26 - 43 --- Associates, 2002a Monitoring 

MMW- Gravel with Souder Miller and25A Middle Dump Dry sand and silt 8/30/99 23 16 - 22 No analytical data found Associates, 2002a Monitoring 

MMW- Souder Miller and25B Middle Dump Bedrock Granite 10/1/99 43 24 - 42 --- Associates, 2002a Monitoring 

Fractured MMW- Sugar Shack Souder Miller and

26A South Dry andesite 8/12/99 --- --- No analytical data found Associates, 2002a Monitoring porphyry 
24

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

MMW- Sugar Shack Souder Miller and27A South Colluvium Gravel 8/27/99 33 27 - 33 --- Associates, 2002a Monitoring 

A 14 m screen was installed

due to the proximity to

MMW- Sand and pumping wells and the Souder Miller and28A Mill area Alluvium gravel 12/2/00 25 11 - 24 resulting fluctuations in the Associates, 2002a Monitoring 

water table - NMED

approved (SMA, 2002a)

28B was re-drilled with 10

in. drive casing MMW- Souder Miller and Mill area Bedrock Granite 1/6/01 42 35 - 42 approximately 3 m from Monitoring 28B original location Associates, 2002a 

(SMA, 2002a)

A 9 m screen was installed

due to the proximity to

MMW- Middle/Sulphur Sand and pumping wells and the Souder Miller and29A Gulch Alluvium gravel 12/11/00 28 18 - 27 resulting fluctuations in the Associates, 2002a Monitoring 

water table - NMED

approved (SMA, 2002a)

MMW- Middle/Sulphur Andesite Souder Miller and29B Gulch Bedrock porphyry 2/1/01 55 48 - 54 --- Associates, 2002a Monitoring 

MMW- Souder Miller and30A Middle Dump Alluvium Sand 12/13/00 12 9.1 - 12 --- Associates, 2002a Monitoring 

MMW- Souder Miller and30B Middle Dump Bedrock Granite 12/14/00 43 37 - 43 --- Associates, 2002a Monitoring 

MMW- Sugar Shack Sand and Souder Miller and31A South Alluvium gravel 1/11/01 30 19 - 25 --- Associates, 2002a Monitoring MMW- Sugar Shack Souder Miller and31B South Bedrock Granite 2/19/01 25 --- --- Associates, 2002a Monitoring 
25

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

MMW- Sugar Shack Sand and Souder Miller and32A South Alluvium gravel 1/10/01 28 22 - 28 --- Associates, 2002a Monitoring 

MMW- Sugar Shack Andesite Souder Miller and32B South Bedrock and granite 2/3/01 41 34 - 41 --- Associates, 2002a Monitoring 

MMW- Sand and Originally named Souder Miller and33A Columbine area Alluvium gravel 10/8/97 18 11 - 17 Columbine X Associates, 2002a Monitoring 

MMW- Souder Miller and34A Spring Gulch Dry --- 3/16/01 --- --- No analytical data found Associates, 2002a Monitoring 

MMW- Souder Miller and34B Spring Gulch Bedrock Bedrock 3/14/01 41 34 - 40 --- Associates, 2002a Monitoring 

Blind MMW- Souder Miller and

35A Gulch/Sulphur Dry --- 2/6/01 --- --- No analytical data found Associates, 2002a Monitoring Gulch North

Blind MMW- Souder Miller and

35B Gulch/Sulphur Bedrock Aplite 2/5/01 47 40 - 46 --- Associates, 2002a Monitoring Gulch North MMW- Sugar Shack Souder Miller and36A West Dry --- 4/3/01 --- --- No analytical data found Associates, 2002a Monitoring 

MMW- Sugar Shack 10 in. borehole to 22.5 m, Souder Miller and36B West Bedrock Bedrock 4/1/01 56 49 - 55 borehole to 34 m, borehole Associates, 2002a Monitoring to total depth (SMA, 2002a)

MMW- Sugar Shack Souder Miller and37A South Dry --- 10/23/00 --- --- No analytical data found Associates, 2002a Monitoring 

Originally named WRD-10 MMW- Alluvium- Souder Miller and

38A Middle Dump colluvium --- 10/9/00 --- --- (SMA 2002a) No analytical Associates, 2002a Monitoring data found 
26

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

MMW- Alluvium/ Waste rock Originally named WRD-12 Souder Miller and39A Sulphur Gulch colluvium, alluvium/ 11/28/00 127 121 - 127 (SMA, 2002a) Associates, 2002a Monitoring waste rock colluvium 

MMW- Originally named WRD-15 Souder Miller and40A Spring Gulch Bedrock Bedrock 8/24/00 87 80 - 86 (SMA, 2002a) Associates, 2002a Monitoring 

Originally named WRD-17 MMW- Souder Miller and

41A Blind Gulch Dry --- 9/29/00 --- --- (SMA, 2002a) No analytical Associates, 2002a Monitoring data found 

Goathill Gulch 

MMW- along access Originally named RV-1 Souder Miller and42A road to Alluvium Alluvium 2/28/01 45 15 - 21 (SMA, 2002a) Associates, 2002a Monitoring Administration

Building 

Originally named RV-2;

MMW- drilled as a piezometer for Souder Miller and43A Mill area Alluvium Alluvium 3/9/01 44 38 - 44 monitoring water levels at Associates, 2002a Monitoring 

the mill site (SMA, 2002a)

Columbine Sand and P-series monitoring well in P-1 Park Alluvium gravel --- 39 8.5 - 36 Columbine Park Molycorp, Inc., CD Monitoring 

Columbine Sand and P-series monitoring well in P-2 Park Alluvium gravel --- 20 4.9 - 11 Columbine Park Molycorp, Inc., CD Monitoring 

Columbine Sand and P-series monitoring well in P-3 Park Alluvium gravel --- 31 13 - 31 Columbine Park Molycorp, Inc., CD Monitoring 

Columbine Sand and P-series monitoring well in P-4A Park Alluvium gravel --- 7.6 4.6 - 7.6 Columbine Park Molycorp, Inc., CD Monitoring 

Columbine Sand and P-series monitoring well in P-4B Park Alluvium gravel --- 25 23 - 25 Columbine Park Molycorp, Inc., CD Monitoring 
27

Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

Columbine Sand and P-series monitoring well in P-5A Park Alluvium gravel --- 11 5.8 - 7.3 Columbine Park Molycorp, Inc., CD Monitoring 

Columbine Sand and P-series monitoring well in P-5B Park Alluvium gravel --- 16 14 - 15 Columbine Park Molycorp, Inc., CD Monitoring 

P-5C Columbine Bedrock Quartz --- 32 30 - 32 P-series monitoring well in Molycorp, Inc., CD Monitoring Park monzonite Columbine Park 

Slifer, D., 1996 and Also known as the Red Private Steffen Robertson and East of River Private Well, (PW- Cabin Hottentot Creek --- --- --- --- --- RR), and Cabin Well Kirsten, 1995, and Private Well Robertson (Private) GeoConsultants, 2001a 

Questa Ranger USGS streamflow-gaging Slifer, D., 1996 and RSTW --- --- --- --- --- Robertson Irrigation Station station 08265000 GeoConsultants, 2001a

Souder Miller and SC-1A Straight Creek Alluvium Alluvium 1/23/02 23 17 - 23 No longer sampled Associates, 2002b Monitoring Souder Miller and SC-1B Straight Creek Bedrock Bedrock 2/3/02 45 36 - 43 --- Associates, 2002b Monitoring 

Mixed- Mixed- Souder Miller and SC-2B Straight Creek bedrock bedrock 2/4/02 --- --- --- Associates, 2002b Monitoring 

Souder Miller and SC-3A Straight Creek Alluvium Alluvium 2/7/02 34 25 - 34 --- Associates, 2002b Monitoring Souder Miller and SC-3B Straight Creek Bedrock Bedrock 1/23/02 61 44 - 58 --- Associates, 2002b Monitoring Souder Miller and SC-4A Straight Creek Alluvium Alluvium 1/20/02 --- --- --- Associates, 2002b Monitoring 
Table 3. Well Information

Total

Well ID Geographic Aquifer Completion Completion well Screened Information Source Well Type Location type material Date depth interval (m)

(m) 

28

Souder Miller and SC-5A Straight Creek Alluvium Alluvium 2/15/02 60 52 - 57 --- Associates, 2002b Monitoring 

Mixed- Mixed- Souder Miller and SC-5B Straight Creek bedrock bedrock 1/17/02 109 99 - 106 --- Associates, 2002b Monitoring 

Pioneer Creek Public Water Supply Drinking Well #1 --- --- --- --- --- --- near Ski Hill Facility Records water 

Pioneer Creek Public Water Supply Drinking Well #2 --- --- --- --- --- --- near Ski Hill Facility Records water 

Pioneer Creek Public Water Supply Drinking Well #3 --- --- --- --- --- --- near Ski Hill Facility Records water 

Pioneer Creek Public Water Supply Drinking Well #4 --- --- --- --- --- --- near Ski Hill Facility Records water 

Upstream from Public Water Supply Drinking Well #5 town of Red --- --- --- --- --- --- Facility Records water River 

U.S. Environmental

Well 3 Capulin in old --- --- --- --- --- Not shown on map; exact Protection Agency --- channel location unknown 

memo

U.S. Environmental

Well 4 Capulin on --- --- --- --- --- Not shown on map; exact Protection Agency --- river location unknown 

memo

U.S. Environmental

Well 8 Hansen Creek --- --- --- --- --- Not shown on map; exact Protection Agency --- on river location unknown 

memo 
Well Information 

Eighty-five wells within the study area with water-quality information are shown in figures 

2-4. An additionalsix wells with water-quality information (BC Ranch Well, BC-1, BC-2, Black 

Canyon 1, Black Canyon 2, and Black Canyon 3) lie outside the study area and are shown in 

figure 1. Three wells with water-quality information (Well 3, Well 4, and Well 8) included in the 

database are not shown on the maps because of unknown or questionable locations. Six wells 

(MMW-14, MMW-34A, MMW-35A, MMW-36A, MMW-37A, and MMW-41A) included in 

the database were installed as “dry” wells; because analytical data were never sampled, they are 

not identified on the maps. Two misidentified wells (Col 1&2 and P-4) are included in the 

database but not on the maps because they do not exist. 

Wells 3, 4, and 8 were sampled for the USEPA as a check on the accuracy and consistency 

of various contract laboratories (U.S. Environmental Protection Agency, 1999). Location 

descriptions include “Capulin in old channel,” “Capulin on river,” and “Hansen Creek on river,” 

respectively, but mapping coordinates were not available. 

Water-quality data for two wells (Col 1&2 and P-4) are included in appendix 1 for 

historical ground-water reference, but the data were not used for modeling or evaluation. Well 

ID “Col 1&2” is inherently problematic because it describes both Columbine Well No. 1 and 

Columbine Well No. 2. Well P-4 also is problematic because the source identified its location 

within the “Red River,” but the only “P-4” well exists in the tailings impoundments in Questa. 

Compilation of Complete Database 

A ground-water quality database was created from the information found in the documents 

listed in table 2. The complete data tables are in appendix 1. Field measurements and 

concentrations of major cations, anions, and trace metals were compiled into spreadsheets 

according to well name. Analytical numbers were entered into this database as they were 

reported in their original sources. When multiple sources reported results from one sampling 

event, the database was updated to reflect the value with the most complete data. When more 

results were encountered in another source than were reported by the original source, the 

omitted values were inserted into the database within parentheses. Table 4 lists and describes 

each symbol used in appendix 1 and table 6. 

Values with four or more figures were changed to three significant figures. Unfiltered 

results, referred to as totals, were entered into the database within brackets. Some sources 

reported letters (UJ, J, b) following the number to qualify the reported values (explanations are 

found in table 4). Unevaluated constituents are represented as “---” in the results column. Any 

value reported as non-detectable was entered as the detection limit preceded by a “less than” 

symbol (<) if that limit was available or was entered as “ND” if unavailable. 

Data on the Molycorp CD (MC CD) had the reporting limit as the detection limit rather 

than the instrument detection limit for maximum confidence in a value. A reporting limit is 

generally 3-10 times higher than the instrument detection limit. When a reported number in the 

MC CD was below the reporting limit yet above the instrument detection limit, it was entered 

into the complete database (app. 1) without a data qualifier. Results below the detection limit 

were entered with a “<” in the database and as a zero in the geochemical modeling code 

WATEQ4F. 

29

Table 4. Symbols for table 6 and appendix 1. 

[FAA, Flame atomic absorption; USEPA, U.S. Environmental Protection Agency; WATEQ4F, 

geochemical modeling code; <, less than] 

Symbols for table of selected values (table 6 on Compact Disc) 

Analytical result below detection limits; entered as 0 value into the < WATEQ4F program 

Estimated Eh, pH or temperature values for WATEQ4F in case of field 

( ) parameters; complimentary results of sample splits in the case of chemical 

analyses 

[ ] Laboratory values in the case of pH or Specific conductance 

* Special attention flag; look below table for note 

Symbols for complete table (appendix 1 on Compact Disc) 

Analytical result below detection limits; entered as 0 value into the < WATEQ4F program 

Laboratory values in the case of pH or Specific conductance; total (unfiltered) [ ] value in the case of chemical analyses 

* Special attention flag; look in comments above analytical column for details 

Scientific Laboratory Division (SLD) reported results/Slifer (1996) reported / results: two different methods and results reported 

Additional symbols for Woodward Clyde (WC) results 

J Estimated concentration 

UJ Estimated as non-detect at the reporting limit given 

Additional symbols for USEPA results 

< Undetected at the laboratory instrument detection limit 

J Result is estimated due to outlying quality-control parameters, such as matrix 

spike, serial dilution, FAA spike recovery, and others 

b Low bias. Actual concentration may be higher than the concentration reported 

30
In some samples, splits collected during one event were sent to different laboratories for 

the determination of different constituents. Various sources reported the disjunct results. The 

table of the complete analyses (app. 1) reports those results separately. The table of selected 

analyses (table 6) has the complementary results combined by sample collection date for 

geochemical modeling and evaluation. The additional values in the combined analyses are in 

parentheses. 

In a limited number of samples, temperature, pH, and (or) Eh values that were not 

measured in the field were (1) estimated for WATEQ4F modeling based on results acquired at 

the same well on a different date or (2) created from relations between the measured 

concentrations of iron, calcium, and (or) sulfate based on geochemical and hydrological 

considerations. Those estimated field values were used to calculate charge imbalance (C.I.) 

values and to discriminate data points by pH. The estimated pH and (or) Eh values are shown 

within parentheses only in the table of selected values (table 6). 

Accuracy of Data 

The speciated C.I. was determined to evaluate the accuracy of the analyses. The C.I. was 

calculated after the speciation of dissolved constituents by the geochemical modeling program 

WATEQ4F (Ball and Nordstrom, 1991) using the formula: 

(sum cations − sum anions) C.I.(percent) = (sum cations + sum anions)/ 2

×100 (1) 

where sum cations is the sum of the cations, in milliequivalents per liter, and sum anions is the 

sum of the anions, in milliequivalents per liter. Equation (1) yields a C.I. that is twice the value 

that most analytical laboratories would report because the cation-anion difference is divided by 

the average of the cation-anion sums rather than the sum of ions (Ball and Nordstrom, 1991). 

Accurate analyses are generally within +10 percent. The cation sum (milliequivalents per liter), 

anion sum (milliequivalents per liter), and speciated C.I. values (percent) for analyses with 

calcium and sulfate values are included with the measured constituents in both the tables of 

complete and selected analyses (app. 1 and table 6, respectively). 

The reported C.I. may be different from that calculated by hand using the reported cation 

and anion sums. This difference is a result of rounding. The reported ion sums and C.I. represent 

a number calculated to the thousandth decimal unit. 

For the WATEQ4F code to accurately calculate the C.I., an analysis must have field 

parameters (pH, Eh, and temperature) in addition to values for all major cations (calcium, 

magnesium, sodium, potassium) and anions (sulfate, alkalinity, fluoride, chloride). Any 

constituent either (1) not analyzed or (2) measured below detection was exported from the 

database to WATEQ4F as a zero. If an analysis had major ions but lacked field parameters, pH, 

Eh, or temperature values were estimated as described in the previous section to enable 

geochemical modeling. However, no chemical constituents were estimated in the creation of this 

database. 

31

The variety of parties involved in investigations at the mine site provided another check 

on the accuracy of water-quality analyses. In 1994 representatives of the mining company (SPRI 

and Woodward-Clyde (WC)) and NMED (Dennis Slifer) each collected samples from the 

monitoring wells and sent them to different laboratories [ETC and Scientific Laboratory 

Division, respectively] for analysis. On later dates, duplicate samples were periodically 

collected by Molycorp and NMED. 

Quality Control on Database Entries 

The accuracy of 25 percent of the values entered into the database were confirmed by 

double checking against the original consultant reports, laboratory sheets, field notes, and 

Molycorp in-house documents (MMW wksts). In addition, the database was directly evaluated 

against the electronic database created by URS for the sitewide comprehensive hydrologic 

report (URS, 2001). The discrepant results were verified against the original data sources when 

available. The current, unreported data from the MC CD created for compliance with DP-1055 

were further confirmed through the direct comparison of every analyte in 26 of 75 wells among 

three versions of the database (MC CD; April, July, and September 2002). 

As a quality-assurance check, the entire dataset (in Excel tables) was run through 

WATEQ4F before it was imported into an Access database. Once the dataset was imported, five 

wells and their complete chemical analyses were randomly chosen for comparison against the 

cited sources and the original data to evaluate the success of the importation process. The entire 

dataset from Access was then exported to WATEQ4F to confirm the accuracy of the transferred 

data. If values had been transposed, the C.I. values would have changed because of the precision 

built into the calculation. Finally, the output file of WATEQ4F from the Access version was 

compared with the previous output file from the Excel version of the database. Because fewer 

than 10 of 608 records had different outputs, the Access database was assumed to be free from 

transcription errors. The slight differences between the output versions were caused by changes 

in the number of significant figures. The Access database was used to create datasets of selected 

analyses and queries for plotting purposes in the quality-assurance check. 

Compilation of Database for Selected Analyses 

Selection for this table was based on five criteria: (1) the sample had to be filtered and 

preserved upon collection, (2) the sample had to have a C.I. within ± 20 percent, (3) the analysis 

had to have values for major cations and anions, (4) the results had to be consistent with other 

samples collected from the same well, and (5) no duplicative results from one well on a single 

date were entered. The range for acceptable C.I. was based on a normal error distribution 

according to the frequency distribution of all analyses that had a C.I. between -100 and +100 

percent as shown in figure 5. A table of selected analyses (table 6) was extracted from the 

complete database for geochemical modeling and for calculating speciation and saturation 

indices. Complementary sample splits were combined to create complete analyses. Analyses 

that lacked field parameters (Eh, pH, temperature) were provided estimated numbers to satisfy 

modeling requirements. The estimated field parameters and the complementary values from 

sample splits are identified in parentheses in table 6. 

32

The curve in figure 5 is the Gaussian distribution fit to show the degree of symmetry about 

zero-percent C.I. The mean value is 3.4 and the standard deviation is 10. A slight skewness is 

apparent because of incomplete analyses and replicate samples, but the frequency plot is a very 

good approximation of a normal error distribution. 

HISTORICAL GROUND-WATER QUALITY 

Two tables of ground-water quality analyses were compiled: a table of the complete 

database (app. 1) and a table of selected analyses (table 6). Appendix 1 lists 608 analyses and 

comments concerning discrepancies between reports and associated information on geographic 

location, field and lab conditions, analytical results, and a speciated C.I. value as determined by 

the WATEQ4F code. Table 6 has 324 analyses that represent probably the most accurate 

historical water-quality data for the study area. 

33

Ground water in the Red River Valley is dominantly a Ca Mg SO4 type. The dominance 

of cations by Ca and of anions by SO4 is related to the common occurrence of the soluble 

mineral gypsum (CaSO4 • 2H2O) throughout the hydrothermally altered areas of the watershed. 

Pyrite (FeS2), another common mineral in the hydrothermally altered areas, contributes to the 

abundance of sulfate through the oxidation process. The relation between pyrite and gypsum 

seems interdependent because all the gypsum found in surface outcrops and sediments appears 

to be secondary from pyrite oxidation. 

Calcium in the ground water may come from the weathering of a variety of minerals found 

in the Red River Valley, but an additional and potentially dominant source is the dissolution of 

calcite because it is a relatively ubiquitous hydrothermal mineral in the Red River Valley Basin. 

Consequently, the water chemistry may range from dominance by calcite dissolution (buffered 

waters of neutral to basic pH), to dominance by congruent gypsum dissolution (neutral to acid 

pH), to dominance by pyrite oxidation (acid pH). 

Concentrations and Time-Series Relations 

The complete database was used to create the concentration and time-series relations 

shown in figures 6-12. The analytical values have been divided into two groups according to pH. 

The values below pH 5 are represented with closed symbols, and those equal to or greater than 

pH 5 are plotted with open symbols. Analytical results for 12 wells typically lie outside general 

water-quality trends. These wells have been plotted with distinct symbols throughout the plots. 

Table 5 summarizes the location, lithology, and mean pH of wells that have the most anomalous 

concentrations of selected constituents. 

Figures 6 and 7 illustrate the relation between Ca and SO4 concentrations. The 1:1 

diagonal line represents congruent gypsum dissolution, and the large red closed circle on the line 

is where the equilibrium solubility of gypsum lies in pure water plots. Most of the sample data 

plot near or below the gypsum dissolution line, indicating the dominance of gypsum and pyrite 

dissolution. Some samples plot above the line, indicating the greater influence of calcite 

dissolution (especially well MMW-35B located in Sulphur Gulch). The reason that several 

water samples, including those from well MMW-35B, are of higher concentration than the 

gypsum solubility in pure water is that the solubility of gypsum increases with added solutes. 

These samples mostly represent acid pH values from a distinct group that is more enriched in 

SO4 than those of mostly higher pH. In these samples, SO4 is contributed from both gypsum 

dissolution and pyrite oxidation. 

Figure 6 includes all sample data. One trend stands out for wells MMW-21, MMW-22, 

MMW-36B, MMW-39A, and MMW-7: the Ca concentrations remain within a 10 to 15 mM 

range, whereas the SO4 values extend from 30 to 110 mM. The constancy of Ca concentrations 

indicates a gypsum solubility control that will be demonstrated later in the “Saturation indices” 

section. In figure 7, the scale for SO4 (x-axis) was shortened to focus on the relation in samples 

with SO4 concentrations of 25 mM per liter or less. 

34

Table 5. Characteristics of wells with water quality that generally lies outside trends in figures 6-15. 

[ID, identification] 

Well ID Geographic Location Well completion lithology Mean pH of ground-water 

samples (1982-2002) 

MMW-2 Capulin Canyon Valley Mudflow-debris flow 4.83 

MMW-7 Sugar Shack West, Mine Shaft 

facilities Andesite bedrock 4.13 

MMW-10B 

Downgradient from Sugar Shack 

South waste-rock dump and old 

mine site 

Quartz monzonite bedrock, 

but the well seal was 

placed in the alluvium 

5.75 

MMW-19A Downgradient from Sugar Shack 

South waste-rock dump Gravel, silt, and sand 4.22 

MMW-21 Sugar Shack West Mine Shaft 

facilities Gravel, sand, and silt 2.97 

MMW-22 Sugar Shack West Mine Shaft 

facilities 

Sand and gravel with silt, 

clay, and cobbles 3.4 

MMW-23A 

North Capulin Canyon 

downgradient fromCapulin 

waste-rock dump 

Sand and gravel 5.27 

MMW-23B 

North Capulin Canyon 

downgradient from Capulin 

waste-rock dump 

Welded tuff 7.64 

MMW-34B 

MMW-35B 

South end of Spring Gulch 

waste-rock dump 

Southwest of Blind/ Sulphur 

North waste-rock dump 

Bedrock 

Aplite 

5.2 

6.71 

MMW-36B Downgradient from Sugar Shack 

West waste-rock dump Bedrock 4.06 

MMW-39A East side of Sulphur Gulch 

waste-rock dump Alluvium-colluvium 4.08 

35
 

36

Figure 8 shows the high concentrations of Mg for most ground waters. Interestingly, the 

same wells with the highest concentrations of SO4 (fig. 6) generally have the highest 

concentrations of Mg. Well MMW-7, located in Sugar Shack West mine shaft facilities (Mine 

Shaft #1), has the highest concentrations of SO4 of any well and additionally has higher 

concentrations of Mg than Ca. For Mg concentrations to be higher than Ca concentrations in 

ground waters is very unusual. 

The high Mg concentrations are likely related to the mafic (high iron, magnesium, and 

calcium) composition of the andesite. Magnesium-bearing primary minerals known to occur in 

the andesite include pyroxenes, amphiboles, biotite, and phlogopite, which alter under 

hydrothermal conditions to chlorite and clinochlore. These magnesium-rich phyllosilicates are 

common in the andesite in the Red River Valley and would readily leach magnesium under acidic 

weathering conditions. Therefore, the reason for the high Mg concentrations in well MMW-7 is 

likely the extreme leaching conditions and gypsum-solubility limitations on Ca concentrations. 

Figure 9 shows time series for Mg, SO4, and F concentrations in samples from well MMW7. Concentrations of some constituents, such as Mg and SO4, decrease dramatically over time; 

concentrations of Al, Mn, Cu, Zn, Co, and Ni decrease by more than half; and others stay nearly 

constant. Concentrations of F increased from about 1 to about 160 mg/L during 1996, indicating 

a laboratory analytical problem prior to 1996. This problem has been confirmed to be analytical 

for two reasons. First, the speciated C.I. (fig. 10) for these samples shows improvement after the 

F concentrations change to 160 mg/L. Second, the analytical problem has been traced to 

interference from Al and Fe complexation with F when the F ion-selective electrode method is 

used (W. Eaton, URS, oral commun., 2003). Increasing the dilution or adding more total ionicstrength adjustment buffer corrected the analytical problem. Therefore, the more accurate F 

concentration in water from well MMW-7 is about 160 mg/L. 

37

400 

600 

800 

1000 

1200 

1400 

1600 

(a) 

MA

GNESIUM CONCENTRATION, IN 

MILLIG

R

A

MS PER LITER 

1994 1995 1996 1997 1998 1999 2000 2001 2002 

1994 1995 1996 1997 1998 1999 2000 2001 2002 

1994 1995 1996 1997 1998 1999 2000 2001 2002 

TIME, IN YEARS 

Figure 9. Selected major ions from well MMW-7 in relation to time for (a) magnesium 

concentrations, (b) sulfate concentrations, and (c) fluoride concentrations. 

6000 

7000 

8000 

9000 

10000 

11000 

(b) 

SULF

ATE CONCENTRATION, IN

MILLI

G

RAMS PER LITER 

-20 

0 

20 

40 

60 

80 

100 

120 

140 

160 

180 

(c)

FLUORIDE CONCENTRATION, IN

MILLIG

RAMS PER LITER 

38
Figure 11 shows Be concentrations in relation to Al concentrations. Concentrations of Be 

in ground waters are typically very low (1-5 μg/L) because of the low abundance and low 

solubility of Be. At the mine site, however, ground water tends to have Be concentrations as high 

as 0.28 mg/L. Enrichment in Be is common for some types of mineral deposits, including the 

deposit in the Red River Valley. In minerals, Be substitutes for Al because of the similar ionic 

radii. Clearly divergent trends are apparent in the data plotted in figure 11. In one trend, Be 

concentrations increase to more than 0.10 mg/L with increasing Al concentrations in well 

MMW-7. Another trend shows Be concentrations increasing more sharply, to as much as 0.28 

mg/L when Al concentrations are less than or equal to 200 mg/L. These two trends indicate 

either two sources of Be with very different abundances or two different processes mobilizing 

Be. 

Figure 12 shows cadmium concentrations in relation to zinc concentrations. Cadmium and 

Zn have similar chemical and geochemical properties. Ratios of Cd/Zn in mine drainage waters 

are often constant for a given site because they are commonly derived from the same source and 

tend to be conservative during aqueous transport (Hem, 1972). The cadmium and zinc data 

plotted in figure 12 shows a coherent trend that is dramatically enriched in Cd relative to crustal 

abundance but is still within a typical range for sphalerites (ZnS), which are the main source of 

both Zn and Cd in many mineral deposits (Barnes, 1997). The general correlation is strong and 

independent of pH, but wells MMW-2, MMW-7, MMW-10B, MMW-18B, and MMW-23B 

markedly deviate from the trend. The dispersion of sample data could be a result of analytical 

error, but there is a potential geochemical explanation because the concentrations are high and 

the wells and values group together in clusters. MMW-7 and MMW-10B are enriched in Cd/Zn 

ratio relative to most well water, whereas MMW-2, MMW-23B, and MMW-18B are depleted in 

Cd/Zn ratio relative to most well water; hence, it seems likely that these differences in Cd/Zn 

ratios represent differences in composition of source material. 

39

40
Saturation Indices 

Fifty-three percent of the historical ground-water quality analyses qualified for inclusion 

in table 6 of selected analyses. These 324 relatively complete analyses were useful for modeling 

saturation indices because the data were selected for accuracy. For additional information 

concerning specific analyses, see appendix 1 for miscellaneous observations and comments. 

This section describes saturation indices calculated by WATEQ4F from the data in table 6. 

The saturation index (SI) is defined as the logarithm of the degree of saturation, Ω, which is the 

ratio of the ion activity product (IAP) to the solubility product constant. The degree of saturation 

is unity at the equilibrium solubility, and the saturation index will be zero. 

IAP

SI = logΩ = log





 (2)
 Ksp

An SI value greater than zero indicates that the ground water is supersaturated with respect to a 

given mineral, whereas a SI value less than zero indicates undersaturation (Nordstrom, 1999). 

Figure 13 shows the relation between gypsum (CaSO4) saturation indices and SO4 

concentrations. Most of the samples are undersaturated with respect to gypsum, but the samples 

that were highest in Ca and SO4 concentrations in figures 6 and 7 have reached saturation. This 

result confirms the idea that gypsum solubility provides an upper limit to Ca concentrations in 

the samples with the highest solute concentrations. 

Figure 14 is a plot of saturation indices for calcite. Saturation is reached for some wells 

only when the pH is greater than 6.5. Waters with acid pH values are 4-5 orders of magnitude 

undersaturated. Calcite saturation is expected for circumneutral pH ground waters because of 

the common occurrence of calcite gangue mineralization in the study area. 

Figure 15 is a plot of saturation indices for fluorite (CaF2) in relation to fluoride 

concentrations. Although fluorite is a fairly common gangue mineral in the hydrothermally 

altered areas, most of the ground waters, especially those with low pH, are undersaturated with 

respect to fluorite. Water from well MMW-34B is notably at saturation, but water from MMW7 and MMW-39A, which have the highest fluoride concentrations, is undersaturated. This 

undersaturation results from Ca concentrations that are lower than those found in water from 

well MMW-34B. Gypsum solubility may keep the Ca concentration low enough to prevent 

water from reaching equilibrium fluorite solubility. Also, fluoride is complexed strongly as HFo 

and AlFno at low pH values, reducing the free fluoride ion concentration. Some waters of 

circumneutral pH are at or above fluorite solubility. These are probably at fluorite saturation, but 

uncertainty or error in the Ca concentrations may have caused apparent supersaturation in the 

calculations. 

Gibbsite saturation indices are shown in figure 16. The zero saturation line represents 

solubility equilibrium for crystalline well-ordered gibbsite (Al(OH)3). The upper solubility line 

is for amorphous Al(OH)3. Gibbsite solubility is often considered a potential control on Al 

concentration in natural waters. Most of the saturation indices determined for the selected 

ground-water analyses fall in the range between the crystalline and amorphous solubility of 

gibbsite. A few waters are supersaturated with respect to amorphous Al(OH)3 and probably 

reflect the passage of colloidal Al particles through filtration membranes during sample 

collection. 

41

42
43
Manganese is a common constituent in the ground water. Possible mineral solubility 

controls for Mn include rhodocrosite (MnCO3) and some oxidized form of Mn such as 

manganite (MnOOH). In figure 17, saturation is not reached for manganite solubility 

equilibrium. Consistent undersaturation for manganite may be realistic, but it also may be 

complicated by the inability to relate aqueous speciation modeling to mixed oxidation states of 

manganese (+2, +3, and +4) in both the aqueous and solid phases. For mixed oxide solid phases, 

the thermodynamic data in the WATEQ4F database are not adequate to quantitatively evaluate 

these reactions. 

The plot of saturation indices for rhodocrosite (MnCO3) in relation to pH (fig. 18) 

conforms well to a solubility control. An upper limit for several circumneutral well waters is 

reached in the vicinity of synthetic to crystalline rhodocrosite solubility. A few samples are 

supersaturated, which may be caused by some errorsin the analytical data or the thermodynamic 

data in the WATEQ4F database. The generally good correspondence of saturation indices with 

rhodocrosite solubility suggests that the dissolved manganese is all reduced to the 2+ oxidation 

state and that mixed oxidation states are negligible. 

44

Problems and Assumptions 

Problems and assumptions need to be noted concerning the complete database. For the 

most part, only wells with water-quality data were catalogued. Samples were assumed to be 

filtered and preserved if sample collection information was unobtainable. The first date of the 

month was used as the default sample date when only the month and year were reported. Sample 

splits were combined to create a complete analysis for the selected analyses in table 6. 

Temperature, pH, and (or) Eh values were estimated for analyses without field parameters 

for admittance into the geochemical code. Results below detection were assumed to be zero for 

WATEQ4F modeling and evaluation purposes. For some analyses, it was unclear whether the 

total dissolved solids (TDS) value was obtained through calculation or measurement. When two 

sources reported different TDS values for one analysis, both numbers were entered into the 

database and separated by a semicolon. 

Discrepancies exist between the analytical laboratory sheets, consultant reports, New 

Mexico State reports, Molycorp in-house documents, and previously compiled databases (MC 

DB and MC CD). Some of the major discrepancies are noted in the “Miscellaneousinformation” 

or “Comments” rows in the complete database (app. 1). A common source of confusion lies in 

the dates because the European style of date formats was used along with the American date 

format without distinction. 

45

One inconsistency within the MC CD concerned wells MMW-34B and MMW-35B. The 

USGS determined that data for the major anions (SO4, alkalinity, F, and Cl) were transposed 

between the wells for the sample collected on September 17, 2001. To rectify the problem, those 

values were switched within this database to reflect the most reasonable and correct results. 

The sulfate determinations at the AWWT facility were subject to error. On certain 

occasions the sulfate values were low by a factor of 8 or 10, whereas on other occasions the 

values were an order of magnitude too high in comparison with historical data. The AWWT 

facility recognized this problem with their in-house determinations and tried to remedy it. Upon 

repeated failure to obtain accurate SO4 numbers, AWWT personnel decided to send the samples 

to certified laboratories for analysis. 

SUMMARY AND CONCLUSIONS 

This report was prepared to compile all available water-quality data for the Red River 

Valley, New Mexico, in a single format with an indication of the accuracy of the analyses. 

Evaluation of 608 water-quality analyses of ground water from 23 sources has led to the 

following conclusions: 

1.	 Ground water is primarily a Ca-Mg-SO4 type. 

2.	 Unusually high concentrations of Be, Co, F, and Ni were often observed. 

3.	 Plots of Ca in relation to SO4 concentrations demonstrate a dominant compositional 

control by gypsum dissolution and pyrite oxidation. 

4.	 The widespread occurrence of low pH (less than 5) waters reflects the common


occurrence of pyrite in the weathering zone.


5.	 The common occurrence of high magnesium concentrations reflects the abundance of 

magnesium-rich silicates exposed to weathering, especially chlorite. 

6.	 A total of 324 analyses were found with C.I. values within ±20 percent that could be 

used for speciation computations to determine saturation indices. 

7.	 Saturation indices confirm a dominant control on ground-water quality by gypsum 

dissolution, calcite dissolution, fluoride dissolution, and rhodocrosite dissolution. 

The database will be used in a variety of ways to determine historical baseline conditions. 

Temporal and spatial plots can be used to illustrate changes in conserved and non-conserved 

elements over time. Historical ground-water quality data can be used to identify flaws in 

hydrologic and geomorphologic models. Further modeling can be done with the database to 

contribute to the understanding of the dynamic geochemical processes that have and continue to 

take place within the study area. 

REFERENCES 

Ball, J.W., and Nordstrom, D.K., 1991, User’s manual for WATEQ4F, with revised 

thermodynamic data base and test cases for calculating speciation of major, trace, and redox 

elements in natural waters: U.S. Geological Survey Open-File Report 91-183, 189 p. 

Barnes, H.L., ed., 1997, Geochemistry of hydrothermal ore deposits (3d ed.): New York, John 

Wiley & Sons, 972 p. 

46

Gale, V.G., and Thompson, A.J.B., 2001, Reconnaissance study of waste rock mineralogy: 

Questa, New Mexico, Petrography, PIMA Spectral Analysis and Rietveld Analysis: 

PetraScience Consultants, Inc., January 31. 

Hem, J.D., 1972, Chemistry and occurrence of cadmium and zinc in surface water and ground 

water: Water Resources Research, v. 8, p. 661-679. 

Kent, Stuart, 1995, Expanded site inspection report on Molycorp Inc., Questa Division, Taos 

County, N.M: New Mexico Environment Department, Groundwater Protection and 

Remediation Bureau--Superfund Program, October 20, 36 p. 

Lipman, P.W., 1981, Volcano-tectonic setting of tertiary ore deposits, Southern Rocky 

Mountains: Arizona Geological Society Digest, v. 14, p. 199-213. 

Livo, E.K., and Clark, R.N., 2002, Mapped minerals at Questa, New Mexico, using Airborne 

Visible/Infrared Imaging Spectrometer ( AVIRIS) data–Preliminary report for the first 

quarterly report of the USGS investigation of baseline and pre-mining ground-water quality 

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Open-File Report 02-0026, 13 p. 

Meyer, J.W., and Leonardson, R.W., 1997, Geology of the Questa mining district-- Volcanic, 

plutonic, tectonic, and hydrothermal history: Socorro, New Mexico Bureau of Mines and 

Mineral Resources Open-File Report 431, 187 p. 

New Mexico Environment Department (NMED), 2000, Discharge Permit DP-1055: Molycorp 

Questa Mine, 24 p. 

Nordstrom, D.K., 1999, Some fundamentals of aqueous geochemistry, in Plumlee, G.S., and 

Logsdon, M.J., eds., The environmental geochemistry of mineral deposits: Littleton, Colo., 

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Nordstrom, D.K., 2002, The Questa baseline and pre-mining ground-water quality investigation 

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Robertson GeoConsultants, Inc. (RGC), 2001a, Background study data report, Questa Mine, 

New Mexico: Report number 052008/12, January, 37 p. 

Robertson GeoConsultants, Inc. (RGC), 2001b, Integrated geochemical load balance for 

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January, 35 p. 

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Bureau, May, 87 p. 

47

Souder, Miller and Associates (SMA), 1997a, Ground water sampling recommended practices: 

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48

Wide Web at URL http://www.wrcc.dri.edu/. 

Woodward-Clyde Consultants (WC), 1996, Final compilation of Molycorp's sample data from 

sample splits with the New Mexico Environmental Department, collected during the 

expanded site inspection at the Molycorp Questa Mine, Questa, New Mexico: Denver, 

September, 38 p. 

49

Table 6. Selected historical ground-water quality analyses 

[ACZ, New Mexico state lab; ETC, Molycorp lab; ft, feet; ID, Identification; m, meter; meq/L, milliequivalents per liter; 

mg/L, milligrams per liter; PS/cm, microsemens per centimeter; MC CD, Molycorp database on compact disc; MC DB, 

Molycorp electronic database prior to DP-1055; MMW, Mine Monitoring Well; MMW wkst, Molycorp in-house 

document; ND, non-detectable; RGC, Robertson GeoConsultants; SLD, New Mexico state lab; Spec Cond, Specific 

Conductance; SPRI, South Pass Resources Investigations, Inc.; V, volts; [ ], lab value; ( ) estimated field value or complimentary

results from split; ---, no data; <, less than; #, rounded down to 3 significant figures; *, special note in 'comments']

Capulin Canyon

Well ID MMW-2 MMW-2 MMW-2 MMW-2 MMW-2 

Sample Date 11/8/94 8/1/96 6/9/98 2/4/00 6/6/01 

Comments --- --- --- --- ---

Source ID (see table 2) SPRI 1995, SRK 1995, 

MC DB, MMW wkst MMW wkst MC DB, NMED MMW wkst, RGC 

8/10, MC DB MC CD 

Lab ID ETC --- ACZ RG70639 Paragon Analytics Paragon Analytics 

Aquifer Well completed in mudflow, debris flow 

Depth to Water (m) 9.66 --- 10.6 10.6 ---

Water Elevation (ft) --- --- --- --- 7,664 

Field Temperature (

o

C) 7.9 (10) 9.9 9.1 10 

pH, field, [lab] 4.9 4.58 4.27 4.01 4.57 

Eh (V) (0.2) (0.3) (0.2) (0.2) 0.280 

Spec Cond (PS/cm) field, [lab] 3,680 3,010 2,920 2,540 2,370 

TDS (mg/L) 3,400 --- 2,780 2,600 2,500 

Constituent, dissolved (mg/L) 

Ca 501 460 343 280 320 

Mg 137 125 122 96 100 

Ba <0.01 <0.01 <0.01 <0.01 <0.01 

Na 64.6 61 44.9 42 42 

K 10.8 12 10.2 11 12 

SO4 2,100 2,000 2,020 1,700 1,800 

Alkalinity (as HCO3) <1 --- <2 10 <5 

F 24 --- 28 20 19 

Cl 6.8 7 7 7.1 5.3 

SiO2 43 51 64 68 62 

Al 63.5 68 95.9 76 67 

Fe 50.8 46.7 46 29 43 

Mn 52.1 25.4 49.8 46 38 

Cu 0.088 0.139 0.19 0.25 0.19 

Zn 9.48 9.18 9.98 8.4 7.8 

Mo <0.02 0.02 <0.01 <0.1 <0.1 

Cd 0.024 0.0041 0.03 0.03 0.025 

Ag <0.1 <0.05 <0.0005 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 <0.01 <0.01 

Co 0.28 0.28 0.32 0.29 0.26 

Ni 0.61 0.63 0.73 0.65 0.56 

Pb <0.002 --- 0.003 <0.03 <0.015 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.015 0.032 0.031 0.033 0.03 

V <0.01 <0.01 <0.005 <0.01 <0.01 

Se <0.05 0.022 <0.001 0.026 0.014 

As <0.005 0.08 <0.001 0.055 0.036 

Sum cations (meq/L) 34.2 31.3 28.5 23.6 24.4 

Sum anions (meq/L) 28.9 26.4 28.3 24.8 26.1 

Charge imbalance (percent) 16.7 16.8 0.62 -5.09 -6.49 

50
Table 6. Selected historical ground-water quality analyses 

Capulin Canyon 

Well ID MMW-2 MMW-2 MMW-2 MMW-2 

Sample Date 8/27/01 10/26/01 2/21/02 6/3/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in mudflow, debris flow 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,666 7,664 7,666 7,665 

Field Temperature (

o

C) 17.7 15.1 9 21.1 

pH, field, [lab] 5.87 4.45 4.18 4.09 

Eh (V) 0.131 0.253 0.317 0.314 

Spec Cond (PS/cm) field, [lab] 2,440 2,500 2,320 2,300 

TDS (mg/L) 2,500 2,500 2,500 2,400 

Constituent, dissolved (mg/L) 

Ca 490 310 300 260 

Mg 72 98 100 95 

Ba 0.01 0.0086 <0.01 0.0067 

Na 71 46 43 37 

K 12 12 12 11 

SO4 1,700 1,700 1,800 1,700 

Alkalinity (as HCO3) 50 <5 <5 <5 

F 12 18 19 21 

Cl 7.4 6.7 8.7 6.4 

SiO2 26 56 68 68 

Al 8.4 61 67 71 

Fe 19 43 39 41 

Mn 21 38 41 40 

Cu 0.049 0.14 0.17 0.18 

Zn 4.1 7.3 8.5 7.4 

Mo <0.1 0.027 <0.1 <0.1 

Cd 0.011 0.023 0.025 0.024 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 0.0015 0.0016 0.0068 

Co 0.11 0.24 0.26 0.25 

Ni 0.25 0.54 0.57 0.55 

Pb 0.009 <0.015 <0.015 <0.015 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.015 0.026 0.028 0.03 

V <0.01 0.0013 0.0013 0.0011 

Se 0.011 0.021 0.022 0.013 

As 0.025 0.039 0.047 0.035 

Sum cations (meq/L) 24.8 23.6 23.8 21.4 

Sum anions (meq/L) 25.6 24.3 26.5 24.2 

Charge imbalance (percent) -3.09 -2.91 -10.4 -12.3 

51
--- --- --- --- ---

--- --- ---

---

Table 6. Selected historical ground-water quality analyses 

Capulin Canyon 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-23A MMW-23A 

6/12/01 9/19/01 

MC CD MC CD

Paragon Paragon

Analytics Analytics

Well completed in sand and gravel

8,764 8,766 

21.1 11.8 

5.51 4.5 

0.073 0.362 

1,820 3,330 

1,800 4,000 

MMW-23A 

4/11/02 

MC CD 

Paragon 

Analytics

13.4 

5.08 

0.012 

2,310 

2,300 

MMW-23B MMW-23B 

1/18/00 6/12/01 

MMW wkst, RGC MC CD 

8/10, MC DB 

Paragon Analytics Paragon 

Analytics 

Well completed in welded tuff 

4.8 ---

--- 8,761 

7.8 13.4 

7.76 6.73 

(0.1) 0.098 

811 743 

500 470 

53 41 

8.6 7.3 

0.013 <0.01 

98 110 

2.9 3.4 

250 230 

120 120 

3 2.9 

1.1 1.2 

13.1 13 

0.31 <0.05 

0.13 <0.1 

0.65 0.15 

<0.01 <0.01 

0.14 0.023 

<0.1 <0.1 

<0.001 <0.001 

<0.002 <0.002 

<0.01 <0.01 

<0.01 <0.01 

<0.02 <0.02 

<0.003 <0.003 

--- <0.0002 

<0.004 <0.004 

<0.01 <0.01 

<0.005 <0.005 

<0.005 <0.005 

7.18 7.09 

6.81 6.50 

5.20 8.58 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

460 480 

41 160 

0.014 0.013 

55 32 

8.1 4.4 

1,200 2,700 

67 <5 

8 46 

7.3 6.2 

21 64 

2.6 110 

0.37 2.4 

22 99 

0.054 0.58 

2.9 18 

<0.1 <0.1 

0.004 0.039 

<0.002 <0.002 

<0.01 <0.01 

0.041 0.43 

0.13 1.00 

<0.009 0.03 

<0.0002 <0.0002 

0.06 0.28 

<0.01 <0.01 

0.0087 0.037 

0.008 0.08 

390

73

0.014

40

4.1

1,500

7

37

6 

47 

37 

0.5 

48 

0.01 

8.2 

0.043 

0.0024 

<0.002 

<0.01 

0.16 

0.48 

0.016 

<0.0002 

0.14 

<0.01 

0.022 

0.13 

Sum cations (meq/L) 21.8 33.9 22.5 

Sum anions (meq/L) 18.4 37.5 22.6 

Charge imbalance (percent) 17.0 -10.2 -0.01 

52

V 
Table 6. Selected historical ground-water quality analyses 

Capulin Canyon 

Well ID MMW-23B MMW-23B MMW-23B MMW-23B MMW-23B 

Sample Date 9/19/01 10/17/01 3/13/02 4/11/02 7/15/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in welded tuff 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,760 8,759 8,761 8,761 ---

Field Temperature (

o

C) 9.5 11.4 6 13 14.9 

pH, field, [lab] 7.78 7.81 7.42 7.9 8.09 

Eh (V) 0.138 0.049 -0.025 0.124 0.018 

Spec Cond (PS/cm) field, [lab] 764 783 758 746 759 

TDS (mg/L) 480 460 490 480 490 

Constituent, dissolved (mg/L) 

Ca 35 35 34 35 37 

Mg 6.6 5.9 5.9 6.3 6.6 

Ba <0.01 0.0068 0.0056 0.0058 0.0057 

Na 120 120 120 120 110 

K 1.6 1.7 1.8 1.9 2 

SO4 240 240 240 240 240 

Alkalinity (as HCO3) 120 120 120 120 110 

F 2.8 2.5 2.7 2.6 2.7 

Cl 1.2 1 1 <1 0.94 

SiO2 13 13 13 13 12 

Al <0.05 <0.05 0.0085 <0.05 0.035 

Fe <0.1 <0.1 0.029 <0.1 0.028 

Mn 0.051 0.045 0.043 0.044 0.04 

Cu <0.01 <0.01 <0.01 <0.01 <0.01 

Zn <0.02 <0.02 <0.02 0.0039 0.00073 

Mo <0.1 <0.1 0.029 <0.1 <0.1 

Cd <0.001 <0.001 <0.001 <0.001 0.00034 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.0018 0.0011 0.0022 

Co <0.01 <0.01 <0.01 <0.01 0.0011 

Ni <0.02 0.00097 0.0047 0.0026 0.0015 

Pb <0.003 <0.003 <0.003 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 <0.004 0.00069 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.005 0.0029 <0.005 <0.005 <0.005 

As <0.005 0.0047 <0.005 <0.005 0.0036 

Sum cations (meq/L) 7.16 7.11 7.09 7.13 6.79 

Sum anions (meq/L) 6.75 6.73 6.77 6.70 6.54 

Charge imbalance (percent) 5.86 5.40 4.58 6.29 3.89 

53
Table 6. Selected historical ground-water quality analyses 

Capulin Canyon 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 11/7/94 6/25/97 11/7/97 6/9/98 2/4/00 

Comments --- --- --- --- ---

Source ID (see table 2) NMED, Slifer NMED, MC DB URS 3/01, MC NMED, MC DB RGC 8/10, MMW 

1996 DB wkst, MC DB

Lab ID SLD WC 94- ACZ RG46913 --- ACZ RG70640 Paragon Analytics 

6427

Aquifer Well completed in andesite bedrock 

Depth to Water (m) --- --- --- 10.2 9.9 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) (11) (10) 10.4 10.6 9.6 

pH, field, [lab] (7.5), [7.63] (7) 6.91 6.7 6.21 

Eh (V) (0.2) (0.2) (0.3) (0.2) (0.2) 

Spec Cond (PS/cm) field, [lab] [2,720] -2,500 --- 2,470 2,800 

TDS (mg/L) 3,070 2030, 2070 2,130 2020, 2100 2,300 

Constituent, dissolved (mg/L) 

Ca 498 482 428 430 500 

Mg 112 53.1 49.1 52.7 63 

Ba --- 0.032 0.029 0.035 0.026 

Na 103 115 99.3 107 91 

K 10 7 4.9 6.2 9.9 

SO4 1,760 1,190 1,250 1,270 1,300 

Alkalinity (as HCO3) 209 257 250 226 170 

F 2.8 3 2.9 3 4.6 

Cl <5 3 5 5 5 

SiO2 (15.2) 35.1 15.2 16.0 19.5 

Al (0.7) <0.2 0.16 0.28 1.4 

Fe (0.1) <0.02 0.07 0.61 0.22 

Mn (37) 5.03 4.07 5.26 13 

Cu --- <0.1 <0.02 <0.01 0.021 

Zn (1.2) 0.12 0.07 0.17 0.1 

Mo --- <0.02 <0.02 0.01 <0.1 

Cd (0.003) 0.0005 <0.03 <0.0005 0.0069 

Ag --- <0.003 <0.01 <0.0005 <0.002 

Cr --- <0.2 <0.02 <0.01 <0.01 

Co (0.08) <0.02 <0.02 0.01 0.047 

Ni (0.2) <0.02 <0.02 0.02 0.091 

Pb --- <0.001 <0.08 <0.001 <0.006 

Hg --- <0.0002 <0.0002 <0.0002 <0.0002 

Be --- <0.004 <0.02 <0.002 <0.004 

V --- <0.01 <0.01 <0.005 <0.01 

Se --- <0.001 <0.002 <0.001 0.011 

As --- <0.001 <0.001 <0.001 0.0069 

Sum cations (meq/L) 28.7 26.1 22.6 23.3 26.4 

Sum anions (meq/L) 28.8 21.5 23.0 22.9 21.6 

Charge imbalance (percent) -0.01 19.2 -1.78 1.79 19.8 

54
Table 6. Selected historical ground-water quality analyses 

Capulin Canyon 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 6/6/01 8/27/01 10/26/01 2/21/02 6/3/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD

Lab ID Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in andesite bedrock 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,669 7,669 7,668 7,669 7,668 

Field Temperature (

o

C) 10.5 14.3 16.3 8.8 19.8 

pH, field, [lab] 6.74 6.81 6.67 6.79 6.82 

Eh (V) 0.278 0.141 0.078 0.061 0.091 

Spec Cond (PS/cm) field, [lab] 2,330 2,280 2,400 2320 2,370 

TDS (mg/L) 2,100 2,100 2,100 2,100 2,100 

Constituent, dissolved (mg/L) 

Ca 470 460 470 470 490 

Mg 56 47 50 48 49 

Ba 0.026 0.026 0.027 0.025 0.025 

Na 97 94 100 110 100 

K 9.4 8.7 9 8.8 8.6 

SO4 1,300 1,300 1,300 1,300 1,300 

Alkalinity (as HCO3) 230 230 240 230 240 

F 3.5 3.3 3.2 4 2.5 

Cl 4.9 4.6 4.8 4.3 4.7 

SiO2 16.3 14.8 15.2 16.3 15.2 

Al 1.7 <0.05 <0.05 <0.05 <0.05 

Fe 0.63 <0.1 0.19 0.27 <0.1 

Mn 6 4.7 4.2 4 3.3 

Cu <0.01 <0.01 <0.0005 <0.01 0.00083 

Zn 0.35 0.19 0.16 0.14 0.13 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.002 0.001 0.00077 <0.001 0.00038 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 <0.01 <0.01 

Co 0.016 <0.01 0.0088 0.0085 0.007 

Ni 0.031 <0.02 0.018 0.015 0.014 

Pb <0.006 <0.003 <0.003 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 0.00059 0.0013 <0.004 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.005 0.0059 <0.005 <0.005 0.0039 

As <0.005 <0.005 0.003 <0.005 <0.005 

Sum cations (meq/L) 24.7 23.2 24.0 24.7 24.5 

Sum anions (meq/L) 22.9 23.1 23.0 23.3 22.6 

Charge imbalance (percent) 7.54 0.74 4.30 5.87 8.15 

55
Table 6. Selected historical ground-water quality analyses 

Access Road south of Goat Hill 

Well ID MMW-42A MMW-42A MMW-42A MMW-42A 

Sample Date 6/14/01 9/8/01 11/11/01 2/20/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in alluvium 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,647 7,643 7,641 7,642 

Field Temperature (

o

C) 10.5 17.8 13.0 11.6 

pH, field, [lab] 3.65 3.49 3.45 3.41 

Eh (V) 0.207 0.480 0.497 0.481 

Spec Cond (PS/cm) field, [lab] 2,300 2,720 2,890 2,650 

TDS (mg/L) 2,400 2,800 2,600 2,500 

Constituent, dissolved (mg/L) 

Ca 230 220 220 230 

Mg 69 76 75 74 

Ba <0.01 <0.01 0.0017 <0.01 

Na 33 67 80 74 

K 3.1 2.8 3.4 3.2 

SO4 1,600 1,700 1,600 1,600 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 16 22 22 19 

Cl 76 260 350 310 

SiO2 64 86 90 94 

Al 130 190 180 170 

Fe 18 1.1 0.92 0.78 

Mn 19 26 27 26 

Cu 2 3.1 3.4 3.3 

Zn 4.7 6.7 6.9 7.2 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.023 0.035 0.034 0.034 

Ag <0.002 <0.002 0.0017 <0.002 

Cr 0.012 0.027 0.036 0.035 

Co 0.23 0.32 0.31 0.3 

Ni 0.45 0.67 0.65 0.64 

Pb <0.006 <0.009 <0.009 <0.009 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.023 0.035 0.037 0.036 

V <0.01 <0.01 <0.01 <0.01 

Se 0.011 0.018 0.013 0.013 

As <0.005 <0.005 <0.005 0.0022 

Sum cations (meq/L) 22.0 26.9 27.7 27.1 

Sum anions (meq/L) 23.2 27.6 29.4 28.5 

Charge imbalance (percent) -5.62 -2.63 -5.99 -4.93 

56
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West Mine Shaft Facility 

Well ID MMW-21 MMW-21 MMW-21 MMW-21 

Sample Date 1/14/00 6/23/01 8/28/01 11/10/01 

Comments --- --- --- ---

Source ID (see table 2) MMW wkst, MC DB MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in gravel, sand and silt 

Depth to Water (m) 23.2 --- --- ---

Water Elevation (ft) --- 8,018 8,020 8,020 

Field Temperature (

o

C) 10.9 14.6 17.7 16.3 

pH, field, [lab] 3.25 2.85 3 2.96 

Eh (V) (0.5) 0.354 0.527 0.527 

Spec Cond (PS/cm) field, [lab] 3,970 3,810 3,870 4,130 

TDS (mg/L) 4,700 4,500 4,300 4,100 

Constituent, dissolved (mg/L) 

Ca 460 390 380 450 

Mg 260 220 220 260 

Ba 0.013 <0.01 <0.01 <0.01 

Na 63 55 54 53 

K 1.8 <0.5 <0.5 1.3 

SO4 3,200 3,300 3,200 3,400 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 42 38 38 38 

Cl 36 37 33 36 

SiO2 94 98 98 98 

Al 200 200 200 200 

Fe 9.6 12 13 15 

Mn 21 22 20 23 

Cu 3.2 2.7 2.8 2.6 

Zn 4.8 4 3.5 4.2 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.039 0.03 0.02 0.03 

Ag <0.002 <0.002 <0.002 <0.002 

Cr 0.0036 0.03 0.07 0.05 

Co 0.72 0.66 0.66 0.66 

Ni 1.4 1.2 1.3 1.3 

Pb <0.009 <0.009 <0.009 <0.009 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.035 0.029 0.032 0.031 

V <0.01 <0.01 <0.01 <0.01 

Se 0.014 0.009 <0.01 <0.01 

As 0.0064 <0.005 <0.005 0.003 

Sum cations (meq/L) 43.4 38.2 37.0 41.8 

Sum anions (meq/L) 41.4 43.5 41.5 43.2 

Charge imbalance (percent) 4.75 -12.9 -11.4 -3.34 

57 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West Mine Shaft Facility 

Well ID MMW-22 MMW-22 MMW-22 MMW-22 

Sample Date 1/17/00 6/23/01 8/28/01 11/10/01 

Comments --- --- --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD

8/10, MC DB 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel with silt, clay and cobbles 

Depth to Water (m) 26.4 --- --- ---

Water Elevation (ft) --- 8,005 8,004 8,004 

Field Temperature (

o

C) 11.9 12.8 20 15.5 

pH, field, [lab] 3.49 3.3 3.45 3.45 

Eh (V) (0.2) 0.147 0.326 0.276 

Spec Cond (PS/cm) field, [lab] 3,890 4,190 3,650 3,880 

TDS (mg/L) 4,500 4,500 4,400 4,600 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

400 

220 

<0.01 

61 

6.7 

3,000 

<5 

36 

31 

88 

200

180

15

1.2

3.8

<0.01

0.026

<0.002

0.011

0.75

1.4

<0.006

<0.0002

0.033

<0.01

0.016

<0.005

400 

190 

<0.01 

52 

7.3 

3,200 

<5 

39 

35 

96 

190

160

15

1.2

3.6

<0.1

0.02

<0.002

<0.01

0.63

1.1

0.010

<0.0002

0.03

<0.01

<0.005

<0.005

390 440

180 220

<0.01 0.0016

50 52

6.5 7.7

3,200 3,300

<5 <5

36 36

37 39

88 92

190 200

180 180

14 16

1.2 1.2

3.2 3.8

<0.1 <0.1

0.020 0.020

<0.002 <0.002

<0.01 <0.01

0.62 0.65

1.1 1.1

<0.006 <0.006

<0.0002 <0.0002

0.03 0.03

<0.01 0.0065

0.009 0.0064

<0.005 <0.005

Sum cations (meq/L) 43.6 39.4 37.5 43.0 

Sum anions (meq/L) 38.0 42.5 41.5 42.0 

Charge imbalance (percent) 13.7 -7.47 -10.1 2.32 

58 

V 
--- --- --- ---

--- --- --- ---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack West Sugar Shack West 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-36B MMW-36B 

6/23/01 9/7/01 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

Well completed in bedrock 

8,362 8,359 

13.1 19.5 

4.21 4.47 

0.262 0.196 

4,000 3,940 

4,500 4,500 

MMW-36B MMW-36B 

11/1/01 2/21/02 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

8,359 8,358 

15.3 11.7 

4.44 3.49 

0.210 0.362 

4,020 4,130 

4,500 4,700 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

530

270

<0.01

58

12

3,100

<5

44

43

56

77

170

19

2.5

1.5

<0.1

0.0078

<0.002

<0.01

0.35

0.62

<0.009

<0.0002

0.0062

0.04

0.0078

<0.005 

540

280

0.03

59

12

3,300

<5

43

45

53

72

180

18

1.9

1.4

<0.1

0.0055

<0.002

0.03

0.34

0.62

<0.006

<0.0002

0.0062

0.03 

0.01 

<0.005 

540 530

280 260

0.02 <0.01

58 63

12 12

3,500 3,600

<5 <5

44 46

53 45

53 62

80 93

170 190

19 18

3.2 5.2

1.5 1.6

<0.1 <0.1

0.008 0.008

<0.002 0.003

0.02 0.061 

0.41 0.53 

0.69 0.78 

<0.006 <0.006 

<0.0002 <0.0002 

0.0074 0.01 

0.02 0.024 

0.01 0.011 

0.0032 0.0033 

Sum cations (meq/L) 42.2 40.9 41.3 42.2 

Sum anions (meq/L) 43.1 45.1 49.3 51.3 

Charge imbalance (percent) -2.30 -9.57 -17.7 -19.4 

59 

V 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West Mine Shaft Facility 

Well ID MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 

Sample Date 5/11/98 6/9/98 2/7/00 6/23/01 11/10/01 2/16/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC DB NMED, MC MMW wkst, RGC MC CD MC CD MC CD 

DB 8/10, MC DB 

Lab ID --- ACZ Paragon Analytics Paragon Paragon Paragon 

RG70641 Analytics Analytics Analytics 

Aquifer Well completed in andesite bedrock 

Depth to Water (m) --- 18.7 18.6 --- --- ---

Water Elevation (ft) --- --- --- 8,029 8,029 8,029 

Field Temperature (

o

C) (12) 12.2 11.3 12.7 14.9 3.8 

pH, field, [lab] (4) 4.13 4.15 4.15 4.16 4.29 

Eh (V) (0.2) (0.2) (0.2) 0.356 0.197 0.187 

Spec Cond (PS/cm) field, [lab] --- 7,920 7,130 6,720 6,720 6,730 

TDS (mg/L) 10,900 10300, 11100 12,000 9,700 9,400 9,700 

Constituent, dissolved (mg/L) 

Ca 489 453 450 500 500 500 

Mg 791 757 680 680 660 680 

Ba --- 0.051 0.035 0.03 0.07 0.031 

Na 138 130 120 120 120 130 

K 10 9.8 14 14 14 14 

SO4 7,200 7,940 7,500 7,000 7,000 7,300 

Alkalinity (as HCO3) ND <2 52 <5 <5 <5 

F 130 140 150 140 130 130 

Cl 9 11 22 14 22 25 

SiO2 --- 40 41 41 36 39 

Al 592 589 530 470 470 430 

Fe 279 247 260 260 250 260 

Mn 39.4 39.5 41 38 37 35 

Cu 0.7 0.75 3.5 1.1 1.2 0.89 

Zn 6.7 6.29 6.2 5.6 5.3 4.9 

Mo ND <0.01 <0.1 <0.1 <0.1 <0.1 

Cd 0.06 0.07 0.077 0.06 0.05 0.059 

Ag --- 0.0007 0.0025 <0.002 <0.002 <0.002 

Cr --- 0.08 0.08 0.07 0.07 0.067 

Co 3.1 2.77 2.6 2.4 2.3 2.2 

Ni 6.7 5.92 5.8 5.3 5.1 4.8 

Pb --- 0.012 0.015 <0.01 <0.01 0.015 

Hg --- <0.0002 0.0002 <0.0002 <0.0002 <0.0002 

Be --- 0.074 0.072 0.06 0.05 0.058 

V --- 0.13 0.11 0.12 0.12 0.11 

Se --- <0.001 <0.025 <0.02 <0.01 0.0099 

As --- <0.005 0.0082 0.01 0.01 0.0092 

Sum cations (meq/L) 96.8 88.0 82.1 81.4 78.9 81.9 

Sum anions (meq/L) 80.0 93.9 93.4 85.0 84.3 95.8 

Charge imbalance (percent) 19.0 -6.52 -12.9 -4.32 -6.58 -15.7 

60 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West East of Sewage Pond 

Well ID MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A 

Sample Date 11/8/94 6/25/97 11/7/97 5/11/98 6/9/98 

Comments --- --- --- --- ---

Source ID (see table 2) SPRI '95, SRK '95, URS, NMED, MC URS 3/01, MC MC DB NMED, MC DB 

MMW wkst, MC DB DB DB 

Lab ID ETC ACZ RG --- --- ACZ RG 70642 

46915 

Aquifer Well completed in andesite Well completed in andesite bedrock 

Depth to Water (m) 29.5 --- --- --- 29.2 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) 8.4 (10) 11.2 (11) 11.7 

pH, field, [lab] 7 (7) 6.94 (6) 6.84 

Eh (V) (0.1) (0.1) (0.1) (0.1) (0.1) 

Spec Cond (PS/cm) field, [lab] 2,860 -2,400 --- --- 2,580 

TDS (mg/L) 2,200 2290, 2400 2,400 2,470 2190, 2330 

Constituent, dissolved (mg/L) 

Ca 466 539 484 500 475 

Mg 85.6 101 92 105 91.7 

Ba 0.103 0.041 0.037 --- 0.036 

Na 41.5 40 34.8 42 38.3 

K 3.8 5 3.6 4.3 4.1 

SO4 1,300 1,450 1,420 1,580 1,490 

Alkalinity (as HCO3) 165 186 143 151 137 

F 2.72 3 2.6 2.3 2 

Cl 8.7 5 7 8 7 

SiO2 24 65 28 --- 29 

Al <0.05 <0.06 <0.06 ND 0.06 

Fe 2.84 1.1 0.44 0.82 0.4 

Mn 7.15 4.46 3.83 3.97 3.91 

Cu <0.010 <0.1 <0.02 0.01 <0.01 

Zn <0.05 <0.10 1.1 ND <0.01 

Mo <0.02 <0.02 <0.02 ND 0.02 

Cd 0.002 <0.0005 <0.006 ND <0.0005 

Ag <0.1 <0.003 0.01 --- <0.0005 

Cr <0.01 <0.02 <0.02 --- <0.01 

Co <0.01 <0.02 <0.02 ND <0.01 

Ni <0.02 <0.02 <0.02 ND <0.01 

Pb <0.002 <0.001 <0.08 --- <0.001 

Hg <0.0002 <0.0002 <0.0002 --- <0.0002 

Be <0.004 <0.004 <0.02 --- <0.002 

V <0.01 <0.01 <0.01 --- <0.005 

Se <0.005 <0.001 <0.003 --- <0.001 

As <0.005 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 24.1 27.2 24.1 25.3 23.6 

Sum anions (meq/L) 21.7 23.5 22.9 25.3 24.0 

Charge imbalance (percent) 10.5 14.8 5.42 -0.08 -1.65 

61 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West East of Sewage Pond 

Well ID MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A 

Sample Date 2/4/00 6/12/01 8/23/01 11/11/01 2/20/02 5/28/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in andesite bedrock 

Depth to Water (m) 29.1 --- --- --- --- ---

Water Elevation (ft) --- 7,759 7,762 7,761 7,762 7,763 

Field Temperature (

o

C) 10.5 26.7 19.7 17.6 13.3 18.2 

pH, field, [lab] 6.49 7.24 6.92 6.92 6.94 6.89 

Eh (V) (0.1) 0.099 0.010 -0.092 -0.035 -0.025 

Spec Cond (PS/cm) field, [lab] 2,350 2,220 2,450 2,530 2,470 2,550 

TDS (mg/L) 2,200 2,500 2,500 2,500 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 440 570 560 560 540 510 

Mg 93 97 92 96 100 94 

Ba 0.029 0.03 0.04 0.04 0.033 0.032 

Na 44 40 41 38 39 40 

K 6.7 5.9 5.4 5.9 6 5.5 

SO4 1,300 1,600 1,500 1,600 1,600 1,600 

Alkalinity (as HCO3) 150 160 160 160 150 150 

F 2.7 2.1 1.8 1.3 2.6 2.5 

Cl 5 6.9 7.2 7 6.2 6.4 

SiO2 28 28 28 26 28 28 

Al 0.17 0.12 <0.05 <0.05 <0.05 0.05 

Fe <0.1 1.3 1 1.1 0.79 0.71 

Mn 2.2 4.6 4.6 4.6 3.6 3.3 

Cu <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Zn <0.02 <0.02 <0.02 0.01 <0.02 <0.02 

Mo <0.1 <0.02 <0.1 <0.1 <0.1 <0.1 

Cd <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.03 <0.01 <0.01 0.00054 

Co <0.01 <0.01 <0.01 0.0068 0.0035 0.0039 

Ni <0.02 <0.02 <0.02 0.0073 0.0047 0.0042 

Pb <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.005 <0.005 <0.005 0.0051 0.0036 <0.005 

As <0.005 <0.005 <0.005 <0.005 0.0026 0.0038 

Sum cations (meq/L) 23.4 26.3 26.6 26.4 26.2 24.3 

Sum anions (meq/L) 21.4 24.0 23.1 24.8 25.1 25.1 

Charge imbalance (percent) 8.88 9.10 14.1 6.46 4.29 -3.55 

62 
--- --- --- --- ---

---

---

--- --- --- --- ---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack West East of Sewage Pond 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-8B MMW-8B 

11/8/94 6/25/97 

SPRI '95, SRK '95, NMED, MC DB 

MMW wkst, MC DB 

ETC ACZ RG 46916 

Well completed in mudflow 

29.3 ---

7.1 (10) 

6.4 (7) 

(0.1) (0.1) 

1,780 -1,700 

1,100 1370, 1450 

MMW-8B 

11/7/97 

URS 3/01, MC 

DB

11.5 

6.01 

(0.1) 

1,700 

1,520 

MMW-8B MMW-8B 

5/11/98 6/9/98 

URS 3/01, MC NMED, MC 

DB DB

--- ACZ RG 70643 

--- 28.9 

(11) 12 

(6) 5.63 

(0.1) (0.1) 

--- 1,850 

1,760 1360, 1520 

Constituent, dissolved (mg/L) 

Ca 206 259 251 286 264 

Mg 55.5 71.4 66.6 87 71.8 

Ba 0.016 0.008 0.009 --- 0.011 

Na 33.9 59.3 59.3 69.5 56.1 

K 2.9 3 3 3.8 3.2 

SO4 730 910 950 1,130 940 

Alkalinity (as HCO3) 19 17 16 11 6 

F 1.83 1.6 1.6 1.6 1.7 

Cl 5.6 17 18 26 21 

SiO2 37 86 19 --- 38 

Al 0.44 0.38 0.65 0.51 0.48 

Fe <0.050 0.01 0.04 0.01 0.02 

Mn 0.202 0.027 0.052 0.024 0.021 

Cu <0.01 <0.05 <0.01 ND <0.01 

Zn 0.211 0.32 0.017 0.38 0.32 

Mo <0.02 <0.01 <0.01 ND <0.01 

Cd <0.0005 0.0029 0.003 0.0037 0.0026 

Ag <0.1 <0.0003 <0.005 --- <0.0005 

Cr --- <0.01 <0.01 --- <0.01 

Co <0.01 <0.01 0.01 ND <0.01 

Ni 0.059 0.07 0.06 0.08 0.07 

Pb <0.002 <0.001 <0.04 --- <0.001 

Hg <0.0002 <0.0002 <0.0002 --- <0.0002 

Be <0.004 <0.002 <0.01 --- <0.002 

V <0.01 <0.005 <0.005 --- <0.005 

Se <0.005 0.004 0.003 --- 0.003 

As <0.005 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 13.0 16.6 15.8 18.4 16.5 

Sum anions (meq/L) 12.3 14.9 15.7 18.3 15.2 

Charge imbalance (percent) 5.52 10.9 0.68 0.53 8.34 

63 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack West East of Sewage Pond 

Well ID MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B 

Sample Date 2/4/00 6/12/01 8/24/01 11/11/01 2/20/02 5/28/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in mudflow 

Depth to Water (m) 29.1 --- --- --- --- ---

Water Elevation (ft) --- 7,765 7,764 7,763 7,763 7,764 

Field Temperature (

o

C) 10.2 19.8 17.9 14.2 13.4 21.1 

pH, field, [lab] 5.66 6.49 5.71 5.52 5.64 5.46 

Eh (V) (0.1) 0.036 0.237 0.113 0.196 0.211 

Spec Cond (PS/cm) field, [lab] 2,360 2,290 2,460 2,530 2,500 2,760 

TDS (mg/L) 2,200 2,600 2,500 2,400 2,400 2,600 

Constituent, dissolved (mg/L) 

Ca 400 470 420 450 470 450 

Mg 110 150 140 130 130 120 

Ba <0.01 <0.01 0.03 0.0089 <0.01 0.0092 

Na 95 110 98 89 98 110 

K 6.9 11 7.9 6.7 6.8 6.6 

SO4 1,400 1,700 1,600 1,600 1,600 1,800 

Alkalinity (as HCO3) 27 16 15 12 10 13 

F 1.7 7.6 5 1.6 2 1.9 

Cl 27 31 34 31 31 28 

SiO2 39 41 39 36 41 39 

Al 1.9 4.6 2.1 0.46 0.42 0.5 

Fe <0.1 <0.1 <0.1 <0.1 <0.1 0.039 

Mn 0.66 4.4 1.8 <0.01 0.013 0.028 

Cu 0.018 0.03 0.03 0.0009 <0.01 0.0015 

Zn 0.65 2.7 1.6 0.55 0.58 0.53 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.0057 0.02 0.01 0.0052 0.0043 0.0051 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 <0.01 0.003 0.0025 

Co <0.01 <0.01 <0.01 <0.01 <0.01 0.00082 

Ni 0.12 0.81 0.4 0.12 0.12 0.12 

Pb <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.00092 0.0074 0.01 0.007 0.009 0.0058 

As <0.005 <0.005 <0.005 0.0033 0.0035 0.0029 

Sum cations (meq/L) 24.9 29.2 26.4 26.7 28.0 25.6 

Sum anions (meq/L) 21.8 24.5 23.9 23.9 23.8 26.8 

Charge imbalance (percent) 13.5 17.4 10.1 11.1 16.3 -4.64 

64 
Columbine Park 

Table 6. Selected historical ground-water quality analyses 

Well ID Columbine No. 

1 

Columbine 

No. 1 

Columbine 

No. 2 

Columbine 

No. 2 

Columbine 

No. 2 

Columbine 

No. 2 

Columbine 

No. 2 

Sample Date 9/9/97 3/19/02 9/9/97 8/7/01 3/19/02 8/7/01 3/19/02 

Comments * Ni: 0.15, --- * Ni: 0.1, --- --- --- ---

<0.02 in DB <0.02 in DB 

Source ID (see table 2) RGC 8/10, MC MC CD RGC 8/10, MC CD MC CD MC CD MC CD 

DB, Vail MC DB, Vail 

Lab ID --- Paragon --- Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Alluvial water supply well in the "cabin area" of Columbine Park 

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (

o

C) 16.6 (9) 11.6 --- --- (8) (8) 

pH, field, [lab] [6] (5) 6.1, [6.2] --- --- (6) (6) 

Eh (V) (0.2) (0.2) --- --- --- (0.2) (0.2) 

Spec Cond (PS/cm) field, [lab] 646, [647] --- 577, [570] --- --- --- ---

TDS (mg/L) 495 1400 435 530 1,000 530 1,000 

Constituent, dissolved (mg/L) 

Ca 79.2 220 67 79 160 79 160 

Mg 25.5 90 20.2 32 64 32 64 

Ba <1 0.017 <1 0.017 0.026 0.017 0.026 

Na 9.3 21 7.8 <10 15 <10 15 

K 1.6 4 1.5 2.2 3.2 2.2 3.2 

SO4 340 940 280 340 700 340 700 

Alkalinity (as HCO3) 27 <5 33 10 7.2 10 7.2 

F 4.64 19 3.32 8.4 12 8.4 12 

Cl <10 16 <10 5.3 12 5.3 12 

SiO2 29.3 11 27.8 16 19 7.7 8.7 

Al 2.2 16 1.4 7 11 7 11 

Fe 0.5 <0.1 0.4 1.2 0.15 1.2 0.15 

Mn 0.8 8.7 0.5 2.6 5.8 2.6 5.8 

Cu <0.25 0.27 <0.25 0.07 0.13 0.07 0.13 

Zn 1.04 5.9 0.74 1.9 3.6 1.9 3.6 

Mo <0.02 <0.1 <0.02 <0.1 <0.1 <0.1 <0.1 

Cd 0.008 0.04 <0.005 0.01 0.023 0.013 0.023 

Ag --- <0.002 --- <0.002 <0.002 <0.002 <0.002 

Cr --- <0.01 --- <0.01 <0.01 <0.01 <0.01 

Co <0.02 0.00088 <0.02 <0.01 0.0035 <0.01 0.0035 

Ni 0.15 * 0.85 0.1 * 0.3 0.41 0.3 0.41 

Pb <0.02 <0.003 <0.02 0.014 0.0043 0.014 0.0043 

Hg --- <0.0002 --- <0.0002 <0.0002 <0.0002 <0.0002 

Be --- 0.014 --- 0.013 0.014 0.013 0.014 

V --- 0.00069 --- <0.01 <0.01 <0.01 <0.01 

Se --- 0.011 --- <0.005 0.003 <0.005 0.003 

As <0.001 <0.005 <0.001 <0.005 <0.005 <0.005 <0.005 

Sum cations (meq/L) 5.50 15.8 4.60 6.02 11.7 6.02 11.7 

Sum anions (meq/L) 6.40 15.1 5.60 6.25 11.9 6.25 11.9 

Charge imbalance (percent) -15.9 4.55 -18.5 -3.72 -1.15 -3.72 -1.15 

65 
Table 6. Selected historical ground-water quality analyses 

Columbine Park 

Well ID Molycorp Douglas Douglas Douglas Well Douglas Well Douglas Well Douglas 

Cabin Well Well Well Well 

Sample Date 3/19/02 6/10/98 6/7/01 9/6/01 11/8/01 3/19/02 6/13/02 

Comments + approximate --- --- *discrepancy in * Se: <0.005, *As: 0.0066, ---

Fe between MC 0.0027 in MC 0.0082 in MC 

CD's CD 9/18/02 CD 9/18/02 

Source ID (see table 2) MC CD NMED MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon ACZ RG Paragon Paragon Paragon Paragon Paragon 

Analytics 70722 Analytics Analytics Analytics Analytics Analytics 

Aquifer Wells completed in alluvium 

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (

o

C) (10) 7.4 8.4 8.7 8.2 12 13.9 

pH, field, [lab] (7) 5.61 5.8 5.21 4.87 4.6 5.53 

Eh (V) --- (0.3) 0.211 0.306 0.174 0.249 0.164 

Spec Cond (PS/cm) field, [lab] --- 640 975 796 1,010 1,080 823 

TDS (mg/L) 120 436, 470 800 640 780 950 620 

Constituent, dissolved (mg/L) 

Ca 39 69.9 100 86 130 130 87 

Mg 7.2 25.3 47 42 61 66 39 

Ba --- 0.031 0.032 0.028 0.032 0.031 0.024 

Na 3.6 8.9 12 10 11 15 10 

K 1.2 1.9 3.6 2.3 2.5 2.8 2.2 

SO4 58 300 530 420 520 670 400 

Alkalinity (as HCO3) 65 8 6.9 6.7 5.7 <5 5.8 

F 0.79 8.7 14 11 12 15 7.4 

Cl 1.4 5 7 10 11 12 7.4 

SiO2 8.3 --- 18 17 17 18 14 

Al 0.072 6.74 15 10 12 14 5.5 

Fe 0.14 0.86 1.4 1.1 * 0.87 0.76 3.8 

Mn 0.0047 2.3 7 4.2 5 7.3 3.2 

Cu <0.01 0.06 0.17 0.12 0.14 0.17 0.053 

Zn 0.097 1.46 3 1.9 2.7 3.1 2.1 

Mo <0.1 --- <0.1 <0.1 <0.1 <0.1 <0.1 

Cd <0.001 0.009 0.021 0.013 0.017 0.022 0.0099 

Ag <0.002 --- <0.002 <0.002 <0.002 0.0099 <0.002 

Cr 0.00078 --- <0.01 <0.01 <0.01 <0.01 <0.01 

Co <0.01 --- 0.013 <0.01 <0.01 0.014 0.0031 

Ni 0.0072 0.15 0.32 0.22 0.3 0.36 0.16 

Pb <0.003 --- <0.003 0.004 0.0015 <0.003 <0.003 

Hg <0.0002 --- <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 0.004 0.0076 0.006 0.0069 0.0069 0.0038 

V <0.01 --- <0.01 <0.01 <0.01 0.0013 <0.01 

Se <0.005 0.001 <0.005 <0.005 0.0027 * 0.0082 <0.005 

As <0.005 --- <0.005 <0.005 <0.005 0.0082 * 0.0059 

Sum cations (meq/L) 2.60 5.56 8.75 7.50 10.7 10.8 7.06 

Sum anions (meq/L) 2.21 5.61 9.31 7.61 8.87 11.3 7.10 

Charge imbalance (percent) 16.1 -0.97 -6.29 -1.48 18.9 -4.00 -0.61 

66 
Table 6. Selected historical ground-water quality analyses 

Columbine Park 

Well ID MMW-33A MMW-33A MMW-33A MMW-33A MMW-33A 

Sample Date 6/12/01 9/5/01 11/27/01 1/30/02 5/13/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,843 7,834 7,828 7,826 7,829 

Field Temperature (

o

C) 11 9.2 5.5 7.5 18.3 

pH, field, [lab] 4.66 4.37 4.68 4.39 4.24 

Eh (V) 0.100 0.411 0.361 0.259 0.344 

Spec Cond (PS/cm) field, [lab] 1,780 2,090 2,140 2,120 1,980 

TDS (mg/L) 1,700 1,900 2,000 1,900 1,800 

Constituent, dissolved (mg/L) 

Ca 180 230 240 220 190 

Mg 110 140 140 140 130 

Ba <0.01 <0.01 0.03 0.0085 0.0083 

Na 22 24 24 28 23 

K 4.4 4.7 5 4.5 4.8 

SO4 1,200 1,400 1,500 1,400 1,400 

Alkalinity (as HCO3) <5 <5 <5 <5 <5 

F 25 28 27 27 26 

Cl 18 23 24 22 20 

SiO2 24 24 24 26 24 

Al 48 57 56 57 50 

Fe 0.13 <0.1 <0.1 <0.1 0.11 

Mn 28 29 31 31 28 

Cu 0.71 0.8 0.83 0.83 0.75 

Zn 5.1 6 6 5.6 5.6 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.03 0.04 0.04 0.043 0.038 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.002 0.019 0.022 

Co 0.22 0.26 0.26 0.26 0.23 

Ni 0.56 0.66 0.63 0.65 0.6 

Pb <0.009 <0.01 <0.01 0.015 <0.015 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.01 0.01 0.01 0.012 0.011 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.01 0.01 0.01 0.021 0.021 

As <0.005 0.007 <0.0037 0.0069 0.0072 

Sum cations (meq/L) 17.6 21.8 22.2 21.8 18.3 

Sum anions (meq/L) 18.7 21.2 23.2 21.4 21.2 

Charge imbalance (percent) -6.27 2.68 -4.65 1.76 -14.7 

67 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-1 P-1 P-1 P-1 P-1 

Sample Date 11/7/97 5/11/98 6/10/98 2/8/00 6/5/01 

Comments --- --- --- --- ---

Source ID (see table 2) URS, MC DB URS, MC DB NMED MMW wkst, RGC MC CD 

8/10, MC DB 

Lab ID --- --- ACZ RG 70723 Paragon Analytics Paragon 

Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- 7.24 7.8 ---

Water Elevation (ft) --- --- --- --- 7,811 

Field Temperature (

o

C) 7.9 (8) 8.1 8.3 10.1 

pH, field, [lab] 4.87 (5) 4.98 4.68 5.03 

Eh (V) (0.3) (0.3) (0.3) (0.3) 0.140 

Spec Cond (PS/cm) field, [lab] 1,065 --- 1,710 1,840 823 

TDS (mg/L) 960 1,090 923 1,700 600 

Constituent, dissolved (mg/L) 

Ca 142 149 142 220 78 

Mg 60 64.7 57.2 100 37 

Ba 0.025 --- 0.018 0.03 <0.01 

Na 15 15.7 15.2 23 11 

K 2.8 2.6 2.6 4.2 2.4 

SO4 610 680 650 1,100 430 

Alkalinity (as HCO3) 4 5 2 11 <5 

F 13 15 15 25 9.1 

Cl 13 15 13 18 12 

SiO2 23.8 --- --- 25.7 16.0 

Al 13.4 16.1 15 28 11 

Fe 0.09 0.05 --- <0.1 <0.1 

Mn 6.34 7.28 7.49 16 4.9 

Cu 0.23 0.19 0.18 0.31 0.15 

Zn 3.48 3.91 3.89 6.1 2.2 

Mo <0.01 ND --- <0.01 <0.1 

Cd 0.023 0.026 0.027 0.046 0.01 

Ag <0.005 --- --- --- <0.002 

Cr <0.01 --- --- <0.01 <0.01 

Co <0.01 ND --- 0.018 <0.01 

Ni 0.39 0.45 0.43 0.69 0.24 

Pb <0.04 --- --- <0.006 <0.003 

Hg <0.0002 --- --- --- <0.0002 

Be 0.02 --- 0.016 0.026 0.01 

V <0.005 --- --- --- <0.01 

Se <0.002 --- 0.002 0.014 <0.005 

As <0.001 --- --- 0.013 <0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

11.2 

10.4 

7.38 

11.8 

11.6 

2.24 

11.0 

11.1 

-1.01 

17.2 

17.9 

-3.72 

6.97 

7.77 

-11.0 

68 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-1 P-1 P-1 P-1 

Sample Date 9/11/01 11/27/01 2/14/02 5/15/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,806 7,798 7,796 7,798 

Field Temperature (

o

C) 14.4 5.2 8.3 19.4 

pH, field, [lab] 4.77 4.59 4.58 4.4 

Eh (V) 0.296 0.305 0.202 0.259 

Spec Cond (PS/cm) field, [lab] 1,083 1,620 1,840 1,850 

TDS (mg/L) 850 1,400 1,600 1,800 

Constituent, dissolved (mg/L) 

Ca 110 190 200 210 

Mg 54 100 110 110 

Ba <0.01 <0.01 0.021 0.02 

Na 13 18 22 22 

K 2.9 4.6 4.7 4.5 

SO4 580 1,000 1,200 1,300 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 13 21 24 26 

Cl 12 19 20 20 

SiO2 19.7 23.5 25.7 25.7 

Al 15 29 33 35 

Fe <0.1 0.13 0.14 0.09 

Mn 6.7 17 20 19 

Cu 0.16 0.4 0.41 0.4 

Zn 3.1 6.1 6.3 5.9 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.02 0.04 0.049 0.046 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 0.00055 0.015 0.009 

Co <0.01 0.02 0.032 0.035 

Ni 0.35 0.65 0.73 0.71 

Pb <0.003 <0.006 <0.006 <0.006 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.01 0.02 0.026 0.024 

V <0.01 <0.01 <0.01 <0.01 

Se <0.005 0.0097 0.014 0.0078 

As <0.005 <0.005 0.011 0.0081 

Sum cations (meq/L) 9.40 16.5 17.3 16.7 

Sum anions (meq/L) 9.88 16.3 19.3 20.2 

Charge imbalance (percent) -5.04 1.52 -11.1 -19.2 

69 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-2 P-2 P-2 P-2 

Sample Date 11/7/97 5/11/98 6/10/98 2/8/00 

Comments --- --- --- ---

Source ID (see table 2) URS, MC DB URS, MC DB NMED MMW wkst, RGC 

8/10, MC DB 

Lab ID --- --- ACZ RG 70724 Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- 4.1 6.3 

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) 8.9 (8) 7.8 6.2 

pH, field, [lab] 4.93 (5) 5.22 4.86 

Eh (V) (0.3) (0.3) (0.3) (0.3) 

Spec Cond (PS/cm) field, [lab] 1,030 --- 880 1,440 

TDS (mg/L) 910 930 616, 680 1,200 

Constituent, dissolved (mg/L) 

Ca 146 131 101 160 

Mg 59 57.6 38.2 77 

Ba 0.027 --- 0.021 0.022 

Na 15 13.2 11.3 17 

K 2.4 2.3 1.9 2.8 

SO4 590 540 430 780 

Alkalinity (as HCO3) 4 4 2 5.6 

F 12 11 7.7 19 

Cl 12 13 10 14 

SiO2 22 --- --- 19 

Al 13.7 15.3 8.78 21 

Fe 0.01 0.05 --- <0.1 

Mn 7.82 8.33 4.13 13 

Cu 0.23 0.21 0.11 0.27 

Zn 2.44 2.39 1.93 3.2 

Mo <0.01 ND --- <0.1 

Cd 0.017 0.016 0.011 0.025 

Ag <0.005 --- --- <0.002 

Cr 0.01 --- --- <0.01 

Co 0.03 0.04 0.01 0.71 

Ni 0.31 0.29 0.2 0.39 

Pb <0.04 --- --- <0.006 

Hg <0.0002 --- --- <0.0002 

Be 0.01 --- 0.005 0.008 

V <0.005 --- --- <0.01 

Se <0.002 --- 0.001 0.012 

As <0.001 --- --- 0.0054 

Sum cations (meq/L) 11.4 10.9 7.88 13.4 

Sum anions (meq/L) 9.94 9.18 7.63 13.1 

Charge imbalance (percent) 13.6 17.5 3.20 2.62 

70 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-2 P-2 P-2 P-2 

Sample Date 6/5/01 9/11/01 11/27/01 2/14/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,810 7,806 7,798 7,797 

Field Temperature (

o

C) 9.7 19.3 6.1 9.6 

pH, field, [lab] 5.04 4.88 4.64 4.62 

Eh (V) 0.216 0.320 0.333 0.283 

Spec Cond (PS/cm) field, [lab] 1,290 1,190 1,450 1,600 

TDS (mg/L) 1,000 960 1,200 1,400 

Constituent, dissolved (mg/L) 

Ca 150 130 160 170 

Mg 68 61 84 94 

Ba 0.032 0.04 0.021 0.018 

Na 16 16 16 20 

K 3.2 3.1 4.3 4 

SO4 730 660 850 980 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 12 12 17 22 

Cl 25 14 15 17 

SiO2 24 21 21 21 

Al 16 14 26 32 

Fe 0.47 <0.1 <0.1 0.062 

Mn 7.6 7.7 15 19 

Cu 0.23 0.25 0.41 0.47 

Zn 2.9 3.2 4.3 4.1 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.019 0.019 0.03 0.031 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.0033 0.0056 

Co 0.035 0.039 0.054 0.08 

Ni 0.33 0.32 0.48 0.48 

Pb <0.003 <0.003 <0.006 <0.006 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.008 0.006 0.012 0.012 

V <0.01 <0.01 <0.01 <0.01 

Se 0.0056 <0.005 0.0072 0.0068 

As <0.005 <0.005 0.003 0.0054 

Sum cations (meq/L) 12.0 10.4 14.3 15.4 

Sum anions (meq/L) 12.5 10.9 13.9 15.8 

Charge imbalance (percent) -4.05 -4.90 2.21 -2.65 

71 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-3 P-3 P-3 P-3 

Sample Date 11/7/97 6/10/98 2/8/00 6/5/01 

Comments --- --- --- ---

Source ID (see table 2) URS, MC DB NMED MMW wkst, RGC 8/10 MC CD 

Lab ID --- ACZ RG70645 Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- 8.5 10.6 ---

Water Elevation (ft) --- --- --- 7,816 

Field Temperature (

o

C) (3) 6.7 8.3 8.7 

pH, field, [lab] 4.88 5.55 4.96 5.64 

Eh (V) (0.2) (0.2) (0.2) 0.131 

Spec Cond (PS/cm) field, [lab] 800 843 1,440 707 

TDS (mg/L) 690 389, 450 1,200 510 

Constituent, dissolved (mg/L) 

Ca 101 67.3 170 73 

Mg 43.2 25.1 76 33 

Ba 0.046 0.023 0.041 0.015 

Na 11.3 9.2 18 <10 

K 2.1 1.5 3.7 2.3 

SO4 430 260 790 370 

Alkalinity (as HCO3) 9 6 9.3 <5 

F 10 7.1 10 9.1 

Cl 9 6 14 9 

SiO2 19.4 --- 21.4 16 

Al 6.42 6.04 16 8.5 

Fe 0.01 --- <0.1 0.11 

Mn 1.93 1.58 7.8 3.3 

Cu 0.04 0.04 0.17 0.08 

Zn 1.61 1.3 4.2 1.9 

Mo <0.05 --- <0.1 <0.1 

Cd 0.012 0.009 0.032 0.013 

Ag <0.005 --- <0.002 <0.002 

Cr 0.01 --- <0.01 <0.01 

Co <0.01 --- <0.01 <0.01 

Ni 0.16 0.17 0.51 0.21 

Pb <0.04 --- <0.003 <0.003 

Hg <0.0002 --- --- <0.0002 

Be 0.01 0.006 0.016 0.0088 

V <0.005 --- 0.01 <0.01 

Se 0.001 --- 0.0065 <0.005 

As <0.001 --- <0.005 <0.005 

Sum cations (meq/L) 7.96 5.47 13.4 5.86 

Sum anions (meq/L) 7.84 4.89 13.1 6.75 

Charge imbalance (percent) 1.47 11.3 2.37 -14.1 

72 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-3 P-3 P-3 P-3 

Sample Date 9/11/01 11/27/01 2/14/02 5/14/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,812 7,805 7,804 7,807 

Field Temperature (

o

C) 12.1 2.4 7.2 12.3 

pH, field, [lab] 4.9 4.92 4.75 4.74 

Eh (V) 0.312 0.281 0.290 0.390 

Spec Cond (PS/cm) field, [lab] 821 1,250 1,520 1,360 

TDS (mg/L) 630 980 1,200 1,200 

Constituent, dissolved (mg/L) 

Ca 85 150 170 150 

Mg 41 70 90 79 

Ba 0.018 0.026 0.028 0.025 

Na 11 13 19 14 

K 2.5 3.7 4 3.8 

SO4 430 680 920 800 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 10 13 21 17 

Cl 10 14 16 13 

SiO2 18 19 24 20 

Al 10 15 24 18 

Fe <0.1 <0.1 <0.1 <0.1 

Mn 4.3 6.7 13 8.9 

Cu 0.1 0.18 0.3 0.23 

Zn 2.2 3.4 4.6 4.5 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.016 0.024 0.035 0.03 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 0.0011 0.0015 0.0017 

Co <0.01 0.0055 0.02 0.0084 

Ni 0.25 0.39 0.55 0.49 

Pb <0.003 <0.003 <0.006 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.0094 0.013 0.018 0.016 

V <0.01 <0.01 <0.01 <0.01 

Se <0.005 0.0057 0.0063 0.0055 

As <0.005 0.0026 0.0044 0.0029 

Sum cations (meq/L) 7.38 12.3 14.6 12.4 

Sum anions (meq/L) 7.62 11.6 15.2 13.2 

Charge imbalance (percent) -3.25 6.00 -3.78 -5.61 

73 
---

---

---

---

---

---

---

---

---

---

---

---

Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-4A 

Sample Date 6/10/98 

Comments ---

Source ID (see table 2) NMED 

Lab ID ACZ RG70646 

Aquifer Sand and gravel 

P-4B P-4B P-4B 

11/7/97 5/11/98 6/10/98 

--- --- ---

URS, MC DB URS, MC DB NMED 

--- --- ACZ RG 70647 

Well completed in sand and gravel 

--- --- 6.4 

--- --- ---

8.2 (9) 9.0 

4.6 (5) 4.78 

(0.3) (0.3) (0.2) 

1,390 --- 1,610 

1,320 1,290 1250, 1340 

201 183 195 

81 79.6 81.3 

0.014 --- 0.014 

19.7 17.9 20.3 

3.1 2.8 2.9 

860 850 870 

4 3 2 

17 16 20 

16 17 16 

25.5 --- ---

24.9 24.7 25.8 

<0.01 0.06 ---

13.7 12.7 12.6 

0.41 0.37 0.37 

4.18 4.1 4.54 

<0.01 ND ---

0.034 0.032 0.035 

<0.005 --- ---

0.01 --- ---

0.08 0.09 0.07 

0.5 0.53 0.58 

<0.04 --- ---

<0.0002 --- ---

0.01 --- 0.011 

<0.005 --- ---

0.002 --- 0.002 

<0.001 --- ---

15.6 14.6 15.3 

13.8 13.8 14.1 

12.0 5.84 8.46 

74

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

6.4 

6.4, 7.9 

5.47 

(0.2) 

883 

571, 660 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

106 

40.3 

11.4 

1.8 

380 

4 

7.4 

11 

6.39 

2.8 

0.07 

1.23 

0.007 

0.01 

0.14 

0.003 

Sum cations (meq/L) 8.12 

Sum anions (meq/L) 6.79 

Charge imbalance (percent) 17.8 

V 
--- --- ---

---

Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

P-4B P-4B 

2/8/00 6/5/01 

MMW wkst, RGC MC CD 

8/10, MC DB 

Paragon Analytics Paragon 

Analytics 

Well completed in sand and gravel 

8.5 ---

--- 7,815 

7.7 9.9 

4.59 4.64 

(0.2) 0.226 

1,910 1,860 

1,900 1,700 

P-4B 

11/26/01 

MC CD

Paragon

Analytics

7,803 

8.4 

4.55 

0.321 

1,880 

1,700 

P-4B 

2/14/02 

---

P-4B 

5/15/02 

---

MC CD MC CD 

Paragon 

Analytics 

Paragon 

Analytics 

--- ---

7,802 

8.7 

4.79 

0.286 

1,890 

1,700 

7,804 

13.8 

4.42 

0.385 

1,960 

1,800 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

220 210 

110 110 

0.015 0.011 

25 22 

4.4 4.4 

1,100 1,200 

9.5 <5 

23 24 

19 18 

23.5 24 

36 41 

<0.1 <0.1 

21 24 

0.5 0.6 

5.3 5 

<0.1 <0.1 

0.043 0.039 

<0.002 <0.002 

<0.01 <0.01 

0.13 0.15 

0.63 0.59 

<0.009 <0.009 

<0.0002 <0.0002 

0.015 0.014 

<0.01 <0.01 

0.015 0.0081 

0.0069 <0.005 

210

120

0.013

21

4.8

1,200

<5

25

21

24

41

<0.1

24

0.59

6

<0.1

0.044

<0.002

0.0081

0.14

0.65

<0.009

<0.0002

0.017

<0.01

0.011

0.0047

210 220 

120 120 

0.026 0.013 

24 24 

4.6 4.6 

1,200 1,400 

5.1 <5 

27 26 

20 21 

26 26 

40 44 

<0.1 <0.1 

25 24 

0.58 0.6 

5.6 5.3 

<0.1 <0.1 

0.042 0.042 

<0.002 0.002 

0.001 0.0039 

0.14 0.14 

0.64 0.63 

<0.009 <0.009 

<0.0002 <0.0002 

0.016 0.017 

<0.01 <0.01 

0.011 0.0099 

0.0055 0.0036 

Sum cations (meq/L) 18.8 18.3 19.0 19.0 18.7 

Sum anions (meq/L) 17.4 18.8 18.8 19.0 21.7 

Charge imbalance (percent) 7.85 -2.75 0.99 0.22 -15.2 

75 

V 
--- --- --- --- ---

---

--- --- --- ---

---

---

---

---

---

---

---

---

---

Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

P-5A 

6/10/98 

NMED 

ACZ RG 70648 

Sand and gravel 

5.4 

8.9 [7.4]

5.9 [5.46]

(0.2)

888

623, 760

P-5A 

8/27/01 

MC CD

Paragon 

Analytics

7,821 

13.3 

4.79 

0.329 

1,380 

1,200 

P-5B P-5B P-5B 

11/7/97 5/11/98 6/10/98 

URS, MC DB URS, MC DB NMED 

--- --- ACZ RG70649 

Well completed in sand and gravel 

--- --- 5.9 

8.2 (10) 8.9 

4.44 (4.5) 4.65 

(0.3) (0.3) (0.3) 

1,450 --- 1,560 

1,400 1,370 1230, 1470 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

102 

38.8 

0.03 

11.3 

1.9 

430 

3 

11 

10 

9.66 

4.47 

0.12 

1.66 

0.011 

0.02 

0.18 

0.004 

0.001 

150

77

0.025

17

3.5

850

<5

17

15

21

29

0.39

14

0.39

3.4

<0.1

0.025

<0.002

0.018

0.089

0.43

<0.006

<0.0002

0.01 

<0.01 

0.0073 

0.0053 

183 181 172 

90 84.4 77.4 

0.014 --- 0.012 

19.6 17.9 18.5 

3.2 2.8 2.7 

900 920 870 

2 ND 2 

18 16 18 

17 16 16 

26.1 --- ---

32.7 31.7 31.3 

<0.01 0.08 ---

18.7 16.2 16.4 

0.5 0.43 0.4 

3.86 3.33 3.46 

<0.01 ND ---

0.031 0.025 0.026 

<0.005 --- ---

<0.01 --- ---

0.15 0.14 0.14 

0.4 0.4 0.37 

<0.04 --- ---

<0.0002 --- ---

0.01 --- 0.008 

<0.005 --- ---

<0.002 --- 0.001 

<0.001 --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

7.90 

7.66 

3.10 

13.2 

13.7 

-3.55 

16.1 

14.3 

11.7 

15.2 

14.6 

4.45 

14.6 

14.1 

3.57 

76 

V 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-5B P-5B P-5B P-5B P-5B P-5B 

Sample Date 2/7/00 6/5/01 8/27/01 11/26/01 2/7/02 5/14/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, URS, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) 7.5 --- --- --- --- ---

Water Elevation (ft) --- 7,820 7,818 7,813 7,812 7,815 

Field Temperature (

o

C) 8.8 10.3 19.9 7.9 10.5 13 

pH, field, [lab] 4.49 4.87 4.65 4.46 4.46 4.39 

Eh (V) (0.3) 0.257 0.354 0.329 0.330 0.387 

Spec Cond (PS/cm) field, [lab] 2,090 1,720 1,840 1,950 1,980 2,000 

TDS (mg/L) 2,000 1,400 1,800 1,800 1,900 1,900 

Constituent, dissolved (mg/L) 

Ca 230 220 240 220 230 210 

Mg 120 94 110 120 130 130 

Ba 0.015 0.026 0.027 0.013 0.013 0.014 

Na 26 20 22 22 28 22 

K 4.5 4.3 4.8 4.6 4.8 4.9 

SO4 1,300 990 1,200 1,300 1,400 1,400 

Alkalinity (as HCO3) 7.2 <5 5.1 <5 <5 <5 

F 24 23 25 24 28 26 

Cl 21 16 19 23 22 20 

SiO2 23.5 26 26 24 26 24 

Al 46 26 32 49 51 47 

Fe <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Mn 26 16 17 27 27 27 

Cu 0.62 0.69 0.9 0.67 0.68 0.66 

Zn 4.6 4.9 6 5.2 5.4 5.5 

Mo <0.1 <0.1 <0.1 <0.1 0.035 <0.1 

Cd 0.038 0.045 0.055 0.037 0.039 0.039 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0022 0.0069 0.0075 

Co 0.2 0.015 0.018 0.21 0.22 0.21 

Ni 0.56 0.75 0.95 0.56 0.59 0.59 

Pb <0.009 <0.006 0.0074 <0.009 <0.009 0.0056 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.011 0.015 0.019 0.011 0.012 0.012 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.021 <0.005 0.01 0.014 0.013 0.019 

As 0.0059 <0.005 0.0079 0.006 0.0071 0.0027 

Sum cations (meq/L) 20.1 16.8 17.9 19.8 20.7 19.2 

Sum anions (meq/L) 20.2 15.7 18.3 20.2 21.5 21.6 

Charge imbalance (percent) -0.81 6.79 -2.03 -1.90 -3.91 -11.5 

77 
--- --- --- --- ---

--- --- ---

Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

P-5C P-5C P-5C 

11/7/97 5/11/98 6/10/98 

URS, MC DB URS, MC DB NMED 

--- --- ACZ RG 70650 

Well completed in quartz monzonite bedrock 

--- --- 6.4 

8.6 (10) 9.7 

4.69 (5) 4.92 

(0.3) (0.3) (0.3) 

1,530 --- 1,730 

1,510 1,320 1390, 1540 

P-5C P-5C 

2/7/00 6/5/01 

MMW wkst, RGC MC CD 

8/10, MCDB 

Paragon Analytics Paragon Analytics 

8 ---

--- 7,824 

8.6 10.3 

4.63 4.57 

(0.3) 0.242 

2,040 1,730 

1,900 1,500 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

213 210 229 

94 85 82.4 

0.029 --- 0.027 

23 19.5 21.2 

3.3 3.1 3 

910 940 990 

5 6 4 

24 20 14 

17 17 17 

26.8 --- ---

24.2 22.2 20 

<0.01 0.06 ---

12.8 12.2 10.2 

0.6 0.59 0.53 

5.29 4.8 4.49 

<0.01 ND ---

0.044 0.044 0.04 

<0.005 --- ---

0.01 --- ---

0.01 0.01 ---

0.76 0.75 0.76 

<0.04 --- ---

<0.0002 --- ---

0.01 --- 0.011 

<0.005 --- ---

0.002 --- 0.003 

<0.001 --- ---

250 180 

120 100 

0.029 0.012 

26 21 

4.7 4 

1,200 1,100 

6.9 <5 

28 22 

20 16 

25.7 24 

33 41 

<0.1 <0.1 

21 24 

0.85 0.57 

6.2 4.1 

<0.1 <0.1 

0.056 0.032 

<0.002 <0.002 

<0.01 <0.01 

0.031 0.18 

0.83 0.47 

0.015 <0.009 

<0.0002 <0.0002 

0.019 0.01 

<0.01 <0.01 

0.014 0.0061 

0.011 <0.005 

Sum cations (meq/L) 16.7 15.5 16.0 20.1 16.7 

Sum anions (meq/L) 14.7 15.2 15.9 18.9 17.3 

Charge imbalance (percent) 13.2 2.02 0.60 6.04 -3.92 

78 

V 
Table 6. Selected historical ground water quality analyses 

Columbine Park Cabin Area 

Well ID P-5C P-5C P-5C P-5C 

Sample Date 8/27/01 11/26/01 2/7/02 5/14/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in quartz monzonite bedrock 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,819 7,811 7,810 7,813 

Field Temperature (

o

C) 18.6 7.7 8.4 11.6 

pH, field, [lab] 4.57 4.95 4.69 4.55 

Eh (V) 0.348 0.319 0.316 0.372 

Spec Cond (PS/cm) field, [lab] 1620 1,880 1,820 1,850 

TDS (mg/L) 1,500 1,700 1,600 1,800 

Constituent, dissolved (mg/L) 

Ca 180 240 230 230 

Mg 96 110 110 120 

Ba 0.048 0.028 0.025 0.026 

Na 20 22 27 21 

K 3.8 4.9 5 5.1 

SO4 1,000 1,200 1,200 1,200 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 19 25 28 27 

Cl 16 20 18 19 

SiO2 24 26 28 26 

Al 34 32 32 31 

Fe <0.1 <0.1 <0.1 <0.1 

Mn 21 20 19 20 

Cu 0.65 0.9 0.85 0.87 

Zn 4.4 6.2 6.2 6.6 

Mo <0.1 0.039 <0.01 <0.1 

Cd 0.032 0.053 0.052 0.054 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 0.0054 0.0056 0.0085 

Co 0.17 0.023 0.024 0.026 

Ni 0.49 0.86 0.85 0.86 

Pb <0.009 0.01 0.0082 0.014 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.0084 0.018 0.019 0.019 

<0.01 <0.01 <0.01 <0.01 

Se 0.0091 0.011 0.012 0.014 

As <0.005 0.011 0.0079 0.0069 

Sum cations (meq/L) 15.7 18.8 18.5 18.7 

Sum anions (meq/L) 15.3 19.0 19.1 18.8 

Charge imbalance (percent) 2.06 -1.14 -3.27 -0.40 

79 

V 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A 

Sample Date 11/8/94 11/19/94 8/1/96 6/25/97 11/7/97 5/11/98 6/11/98 

Comments --- --- --- --- --- --- ---

Source ID (see table 2) SPRI 1995 MC DB MMW wkst NMED, MC URS, MC URS, MC NMED, MC 

DB DB DB DB 

Lab ID ETC ETC --- ACZ RG --- --- ACZ RG 

46917 70725 

Aquifer Well completed in alluvial gravel/sand overlying quartz monzonite bedrock 

Depth to Water (m) 6.6 --- --- --- --- --- 9.5 

Water Elevation (ft) --- --- --- 7,915 --- --- ---

Field Temperature (

o

C) 7.8 (8) (10) (10) 9.3 (10) 9.4 

pH, field, [lab] 5.8 (6) 4.42 (4.5) 4.44 (5) 4.59 

Eh (V) (0.3) (0.3) (0.3) (0.3) (0.3) (0.3) (0.3) 

Spec Cond (PS/cm) field, [lab] 2,400 --- 1,902 (1600) 1,640 --- 2,550 

TDS (mg/L) 1,700 1,700 --- 1580, 1030 1,630 1,760 1330, 1500 

Constituent, dissolved (mg/L) 

Ca 270 245 300 280 246 256 225 

Mg 76.7 69.7 78 80.1 75.8 89 65.8 

Ba <0.01 --- <0.01 0.005 0.01 --- 0.007 

Na 26.4 25.6 33 30.5 25.3 29.7 24 

K 2.5 3.7 3.6 3 2.6 3.1 2.7 

SO4 1,100 1,200 1,200 1,090 1,020 1,090 940 

Alkalinity (as HCO3) <1 ND --- <2 <2 ND <2 

F 7.96 8.28 --- 14 14 14 14 

Cl 26 26 24 6 21 22 18 

SiO2 30 --- 30 67 30 --- 31 

Al 34.2 31.6 35 31.3 31.6 39.1 28.1 

Fe <0.05 0.086 0.097 0.01 0.01 0.11 <0.01 

Mn 12.8 13.1 9.06 14 12.4 13.7 11.6 

Cu 0.58 0.534 0.446 0.63 0.49 0.62 0.47 

Zn 2.07 2.68 2.8 2.57 2.28 2.29 1.97 

Mo <0.02 ND <0.02 <0.01 <0.01 <0.01 <0.01 

Cd 0.024 0.0224 0.0041 0.027 0.025 0.027 0.019 

Ag <0.1 --- <0.01 <0.0003 <0.005 --- <0.0005 

Cr <0.01 --- <0.01 <0.01 <0.01 --- <0.01 

Co 0.137 0.141 0.15 0.15 0.49 0.16 0.12 

Ni 0.293 0.279 0.32 0.34 0.28 0.34 0.27 

Pb 0.004 --- --- 0.001 <0.04 --- 0.003 

Hg <0.0002 --- <0.0002 <0.0002 <0.0002 --- <0.0002 

Be 0.008 --- 0.008 0.008 <0.01 --- 0.006 

V <0.01 --- <0.01 <0.005 <0.005 --- <0.005 

Se <0.005 --- 0.011 0.002 <0.002 --- 0.003 

As <0.005 --- 0.01 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 18.2 16.1 19.2 18.8 17.2 18.9 15.6 

Sum anions (meq/L) 17.2 19.5 17.6 16.3 16.0 16.6 15.0 

Charge imbalance (percent) 5.64 -18.8 8.84 14.3 7.38 13.2 3.93 

80 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A 

Sample Date 2/3/00 6/5/01 7/17/01 12/1/01 2/1/02 4/25/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in alluvial gravel/sand overlying quartz monzonite bedrock 

Depth to Water (m) 8.3 --- --- --- --- ---

Water Elevation (ft) --- 7,916 7,917 7,913 7,910 7,911 

Field Temperature (

o

C) 8.5 10 9.9 9.2 3.9 9.5 

pH, field, [lab] 4.31 4.72 4.45 4.19 4.24 4.16 

Eh (V) (0.3) 0.235 0.245 0.410 0.295 0.378 

Spec Cond (PS/cm) field, [lab] 2,710 1,300 218 2,280 2,360 2,350 

TDS (mg/L) 2,800 1,100 2,200 2,200 2,200 2,200 

Constituent, dissolved (mg/L) 

Ca 430 180 330 330 330 370 

Mg 130 53 110 110 110 130 

Ba <0.01 <0.01 <0.01 0.005 0.0072 0.0065 

Na 34 18 28 29 30 29 

K 0.48 3 4.3 4.5 4.5 5.3 

SO4 1,800 780 1,500 1,500 1,500 1,600 

Alkalinity (as HCO3) 6.7 <5 <5 <5 <5 <5 

F 26 11 24 25 24 25 

Cl 24 15 26 27 26 27 

SiO2 30 24 30 32 30 32 

Al 64 21 52 52 53 57 

Fe 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Mn 24 8.4 20 24 24 24 

Cu 0.88 0.33 0.76 0.76 0.79 0.81 

Zn 4 1.4 3.4 3.7 3.6 4.1 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.044 0.016 0.037 0.037 0.038 0.043 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.002 0.011 0.013 

Co 0.23 0.077 0.19 0.2 0.2 0.23 

Ni 0.56 0.19 0.46 0.47 0.49 0.54 

Pb <0.009 <0.003 <0.009 <0.009 <0.009 <0.009 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.013 0.0052 0.01 0.0099 0.0098 0.011 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.015 <0.005 0.011 0.014 0.016 0.012 

As 0.011 <0.005 0.0077 0.0053 0.0082 0.011 

Sum cations (meq/L) 

Sum anions (meq/L) 

28.3 

26.0 

12.5 

12.8 

22.9 

22.5 

23.1 

22.6 

23.7 

22.9 

26.0 

23.4 

Charge imbalance (percent) 8.30 -2.54 1.41 2.16 3.07 10.8 

81 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B 

Sample Date 11/7/94 8/1/96 6/25/97 11/7/97 5/11/98 6/11/98 

Comments no alkalinity value --- --- ---

Source ID (see table 2) SPRI 1995, SRK MMW wkst NMED, MC URS, MC DB MC DB NMED, MC DB 

1995, MMW wkst, DB 

MC DB 

Lab ID ETC --- ACZ RG --- --- ACZ RG 70726 

46918 

Aquifer Well completed in quartz monzonite bedrock, but well seal in the alluvium 

Depth to Water (m) 6.6 --- --- --- --- 9.5 

Water Elevation (ft) --- --- 7,915 --- --- ---

Field Temperature (

o

C) 10.1 (10) (10) 9.5 (10) (10) 

pH, field, [lab] 7.9 5.28 (6) 5.36 (6) (6) 

Eh (V) (0.2) (0.3) (0.2) (0.3) (0.2) (0.2) 

Spec Cond (PS/cm) field, [lab] 2,250 1,910 -2,000 1,740 --- 2,640 

TDS (mg/L) 1,800 --- 1640, 1690 1,740 1,720 1580, 1690 

Constituent, dissolved (mg/L) 

Ca 347 340 328 307 292 312 

Mg 80.3 77.3 82.5 81.4 87.1 75.9 

Ba 0.034 0.02 0.016 0.018 --- 0.016 

Na 25.8 32 30 27 29.5 26.4 

K 3.5 4.3 4 3.2 3.7 3.3 

SO4 1,100 1,100 1,090 1,070 1,060 1,090 

Alkalinity (as HCO3) 76 --- 8 7 14 10 

F 12.2 --- 14 15 14 15 

Cl 28 26 26 26 26 25 

SiO2 27.4 30 74 33 --- 31 

Al 8.74 13 14.6 14.7 14.5 12.4 

Fe 0.101 0.081 0.17 0.1 0.12 0.03 

Mn 8.55 4.85 9.44 9.01 8.86 9.04 

Cu 0.179 0.406 0.61 0.51 0.5 0.4 

Zn 1.5 1.911 2.29 1.98 1.86 1.75 

Mo <0.02 <0.02 <0.01 <0.01 <0.01 <0.01 

Cd 0.025 0.0018 0.05 0.052 0.042 0.041 

Ag <0.1 <0.01 <0.0003 <0.005 --- <0.0005 

Cr <0.01 <0.01 <0.01 <0.01 --- <0.01 

Co 0.074 0.1 0.11 0.1 0.11 0.09 

Ni 0.201 0.24 0.26 0.23 0.25 0.21 

Pb 0.021 --- 0.048 0.05 --- 0.031 

Hg <0.0002 <0.0002 <0.0002 <0.0002 --- <0.0002 

Be 0.007 0.01 0.01 0.01 --- 0.007 

V <0.01 <0.01 <0.005 <0.005 --- <0.03 

Se <0.005 <0.005 0.001 <0.002 --- <0.001 

As <0.005 0.011 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 18.9 19.6 19.5 18.5 18.4 17.9 

Sum anions (meq/L) 18.9 16.7 17.2 17.0 17.0 17.4 

Charge imbalance (percent) 0.36 15.8 12.6 7.95 7.69 2.65 

82 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B 

Sample Date 2/3/00 6/5/01 7/18/01 12/1/01 2/1/02 4/25/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10, MC 

DB 

Lab ID Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in quartz monzonite bedrock, but well seal in the alluvium 

Depth to Water (m) 8.8 --- --- --- --- ---

Water Elevation (ft) --- 7,914 7,917 7,912 7,910 7,910 

Field Temperature (

o

C) 8.7 10.1 13.7 7.8 (8) 11 

pH, field, [lab] 5.3 5.63 5.8 5.86 (6) 5.86 

Eh (V) (0.2) 0.256 0.223 0.243 0.227 0.258 

Spec Cond (PS/cm) field, [lab] 2,230 2,410 2,360 2,680 -2,700 2,700 

TDS (mg/L) 2,100 2,300 2,400 2,600 2,500 2,600 

Constituent, dissolved (mg/L) 

Ca 400 470 440 490 530 550 

Mg 99 120 120 120 130 150 

Ba 0.018 0.02 0.021 0.022 0.023 0.022 

Na 33 31 31 32 34 34 

K 5.3 5.4 5.5 5.6 6.2 6.8 

SO4 1,300 1,600 1,600 1,800 1,700 1,800 

Alkalinity (as HCO3) 9.3 11 25 44 52 47 

F 19 21 22 19 18 20 

Cl 24 26 23 26 25 26 

SiO2 32 32 28 24 24 24 

Al 21 23 18 12 10 12 

Fe <0.1 0.13 <0.1 0.14 <0.1 0.12 

Mn 13 16 15 18 18 18 

Cu 0.76 0.56 0.46 0.22 0.19 0.22 

Zn 2.6 2.6 2.8 2.8 2.9 3.2 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.056 0.039 0.032 0.025 0.028 0.03 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 <0.0011 0.00097 <0.01 

Co 0.14 0.15 0.16 0.16 0.16 0.18 

Ni 0.34 0.36 0.39 0.37 0.38 0.42 

Pb 0.084 0.083 0.13 0.15 0.12 0.13 

Hg --- <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.013 0.013 0.012 0.011 0.011 0.012 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.011 <0.005 0.0098 0.0099 0.013 0.01 

As 0.012 0.0099 0.017 0.02 0.023 0.019 

Sum cations (meq/L) 

Sum anions (meq/L) 

23.5 

19.8 

26.5 

23.8 

24.4 

24.0 

25.8 

27.8 

28.5 

25.7 

30.0 

26.5 

Charge imbalance (percent) 17.1 10.8 1.82 -7.37 10.2 12.5 

83 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C 

Sample Date 11/8/94 6/25/97 11/7/97 5/11/98 6/11/98 

Comments --- --- --- --- ---

Source ID (see table 2) SPRI 1995, SRK NMED, MC DB URS, MC DB URS, MC DB NMED, MC 

1995, MC DB DB 

Lab ID ETC ACZ RG46919 --- --- ACZ RG70727 

Aquifer Well completed in mudflow 

Depth to Water (m) 6.6 --- --- --- 9.5 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) 11.8 (10) 9 (9) (10) 

pH, field, [lab] 4.7 (5) 4.75 (4.8) (5) 

Eh (V) (0.3) (0.3) (0.3) (0.3) (0.3) 

Spec Cond (PS/cm) field, [lab] 2,000 -1,200 888 --- 1,080 

TDS (mg/L) 1,400 710, 760 780 850 455, 500 

Constituent, dissolved (mg/L) 

Ca 204 128 117 124 76 

Mg 75.2 41.2 40.6 52.1 22.9 

Ba 0.014 0.008 0.016 --- 0.007 

Na 20.2 15 13.3 14.8 9.5 

K 2.8 <8 2 2.2 1.5 

SO4 880 470 460 570 320 

Alkalinity (as HCO3) <1 2 4 4 10 

F 15.4 8 10 10 5.9 

Cl 20 10 9 14 8 

SiO2 21 37 17 --- 14 

Al 31.1 12.2 13.6 16.2 6.87 

Fe <0.05 <0.01 0.02 0.01 <0.01 

Mn 16.3 5.63 5.51 7.5 2.35 

Cu 0.38 <0.3 0.16 0.2 0.09 

Zn 3.2 1.57 1.42 1.56 0.74 

Mo <0.02 <0.01 <0.01 <0.01 <0.01 

Cd 0.026 0.012 0.013 0.011 0.005 

Ag <0.1 <0.0005 <0.03 --- <0.0005 

Cr <0.01 <0.01 <0.01 --- <0.01 

Co 0.106 0.03 0.04 0.05 0.01 

Ni 0.0347 0.15 0.14 0.18 0.06 

Pb <0.002 <0.001 <0.04 --- <0.001 

Hg <0.0002 <0.0002 <0.0002 --- <0.0002 

Be 0.007 0.004 0.01 --- 0.002 

V <0.01 <0.005 <0.005 --- <0.005 

Se <0.005 <0.001 <0.002 --- <0.001 

As <0.005 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 15.6 9.52 9.11 10.2 5.67 

Sum anions (meq/L) 13.8 7.99 7.94 9.76 6.02 

Charge imbalance (percent) 12.2 17.4 13.7 4.72 -5.97 

84 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C 

Sample Date 2/3/00 6/5/01 7/18/01 12/1/01 2/1/02 4/25/02 

Comments * Alkalinity entered as 5 into WATEQ4F --- ---

Source ID (see table 2) MMW wkst, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in mudflow 

Depth to Water (m) 8.3 --- --- --- --- ---

Water Elevation (ft) --- 7,911 7,917 7,910 7,910 7,910 

Field Temperature (

o

C) 8 9.3 17.8 9.0 6.6 14.2 

pH, field, [lab] 4.81 4.91 4.72 4.66 4.8 4.77 

Eh (V) (0.3) 0.256 0.281 0.350 0.252 0.314 

Spec Cond (PS/cm) field, [lab] 1,190 1,240 1,180 1,260 1,100 1,080 

TDS (mg/L) 990 1,000 1,000 1,000 860 840 

Constituent, dissolved (mg/L) 

Ca 130 160 150 140 130 120 

Mg 54 67 69 65 57 50 

Ba 0.011 0.011 <0.01 0.012 <0.01 0.0093 

Na 15 16 17 17 17 15 

K 2.8 3.1 3.3 3.1 3.2 2.7 

SO4 620 730 690 690 600 600 

Alkalinity (as HCO3) 8 <5 * 5.1 <5 <5 * 5.4 

F 13 14 15 15 12 11 

Cl 13 14 13 15 13 13 

SiO2 18 18 18 19 19 17 

Al 19 20 21 21 17 16 

Fe 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Mn 9.8 11 11 11 8.7 7.8 

Cu 0.24 0.27 0.28 0.28 0.22 0.21 

Zn 2.2 2.4 2.7 2.5 2.2 1.8 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.018 0.021 0.023 0.02 0.018 0.016 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0023 0.001 <0.01 

Co 0.066 0.069 0.078 0.067 0.053 0.051 

Ni 0.23 0.24 0.26 0.24 0.2 0.19 

Pb <0.006 <0.006 <0.006 <0.006 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0003 <0.0004 <0.0002 <0.0002 

Be 0.0051 0.0049 0.0053 0.0047 0.0043 0.0038 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.0095 <0.005 0.008 0.012 0.0086 0.0055 

As <0.005 <0.005 <0.005 0.003 <0.005 <0.005 

Sum cations (meq/L) 10.8 12.7 12.4 12.0 11.0 9.69 

Sum anions (meq/L) 10.6 12.0 11.1 11.6 10.3 10.2 

Charge imbalance (percent) 1.21 5.37 10.5 2.90 6.90 -5.58 

85 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 

Sample Date 11/7/94 8/1/96 6/25/97 11/7/97 5/11/98 6/9/98 

Comments --- no alkalinity value --- --- --- ---

Source ID (see table 2) NMED, Slifer MMW wkst NMED, URS URS 2001, MC DB, MMW wkst, MC 

1996 2001, MC DB MC DB URS 2001 DB, URS

Lab ID SLD IC 94- --- ACZ RG46920 --- --- ACZ RG70644 

0639 

Aquifer Well completed in quartz bedrock but water level response indicates alluvial well 

Depth to Water (m) 27.3 --- --- --- --- 30.0 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (

o

C) (10) (10) (10) 10 (10) 10.4 

pH, field, [lab] 5.6 4.22 (5) 4.14 (4) 4.19 

Eh (V) (0.2) (0.3) (0.2) (0.3) (0.3) (0.2) 

Spec Cond (PS/cm) field, [lab] 1,490 1,990 (1,500) 2200 --- 2,600 

TDS (mg/L) -2,100 --- 1900, 1970 2,420 3,030 2460, 2530 

Constituent, dissolved (mg/L) 

Ca 260 250 251 282 307 277 

Mg 110 117 129 149 203 149 

Ba <0.1 0.01 0.013 0.019 --- 0.016 

Na (34) 31 27.4 29.1 35 28.7 

K (20) 4 4 3.5 4 3.5 

SO4 1267 1,300 1,320 1,560 2,090 1,690 

Alkalinity (as HCO3) (156) --- <2 <2 ND <2 

F (21) --- 21 30 37 35 

Cl (36) 20 22 25 24 25 

SiO2 25.7 28 67 28 --- 29 

Al 54 51 56.8 77.4 109 81.2 

Fe <0.1 <0.05 <0.01 <0.02 ND <0.01 

Mn 28 13.4 29.9 33.4 42.8 35.4 

Cu 0.8 0.69 0.98 1.12 1.54 1.14 

Zn 4.6 8.79 5.49 6.2 8.74 6.75 

Mo <0.01 <0.02 <0.01 <0.02 ND <0.01 

Cd <0.10 0.022 0.037 0.052 ND 0.05 

Ag <0.01 <0.01 <0.0005 77.4 --- <0.0005 

Cr <0.1 <0.01 <0.01 <0.02 --- <0.01 

Co 0.25 0.22 0.28 0.31 0.47 0.32 

Ni 0.6 0.51 0.67 0.7 1.03 0.75 

Pb <0.1 --- 0.011 <0.08 --- 0.011 

Hg <0.0005 <0.0002 <0.0002 <0.0002 --- <0.0002 

Be 0.01 0.013 0.015 <0.02 --- 0.016 

V <0.05 <0.01 <0.005 <0.01 --- <0.03 

Se <0.005 0.016 0.002 0.003 --- 0.003 

As <0.01 0.006 <0.005 <0.001 --- <0.001 

Sum cations (meq/L) 

Sum anions (meq/L) 

22.0 

22.0 

20.8 

18.3 

22.3 

19.5 

25.6 

22.5 

30.9 

29.2 

25.2 

24.8 

Charge imbalance (percent) -0.32 12.6 13.5 12.9 5.66 1.47 

86 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 

Sample Date 2/3/00 6/22/01 10/27/01 2/6/02 4/30/02 

Comments --- --- --- --- ---

Source ID (see table 2) MMW wkst, URS, MC CD MC CD MC CD MC CD 

RGC 8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics 

Aquifer Well completed in quartz bedrock but water level response indicates alluvial well 

Depth to Water (m) 28.8 --- --- --- ---

Water Elevation (ft) --- 7,916 7,913 7,908 7,908 

Field Temperature (

o

C) 9.4 11.1 14.0 10.7 16.4 

pH, field, [lab] 4.34 4.22 4.58 4.77 4.4 

Eh (V) (0.2) 0.245 0.344 0.303 0.350 

Spec Cond (PS/cm) field, [lab] 2,990 2,490 2,800 2,670 2,640 

TDS (mg/L) 3,200 2,700 2,800 2,600 2,500 

Constituent, dissolved (mg/L) 

Ca 320 320 300 340 290 

Mg 190 210 200 180 180 

Ba 0.017 0.014 0.036 0.027 0.016 

Na 34 32 32 37 32 

K 5.3 5.4 5.5 7.1 6.1 

SO4 2,100 1,900 1,900 1,900 1,900 

Alkalinity (as HCO3) 15 <5 <5 6.2 5 

F 41 36 36 33 36 

Cl 29 30 29 27 27 

SiO2 30 28 28 26 28 

Al 90 83 77 54 71 

Fe <0.1 0.13 <0.1 <0.1 0.024 

Mn 49 47 43 39 43 

Cu 1.4 1.3 1.2 0.88 1.1 

Zn 8.6 9.4 7.7 6.6 7.2 

Mo <0.1 <0.1 0.025 0.037 <0.1 

Cd 0.06 0.061 0.056 0.048 0.054 

Ag <0.002 <0.002 <0.002 0.0012 <0.002 

Cr <0.01 <0.01 0.0066 0.0032 0.0032 

Co 0.42 0.39 0.38 0.31 0.35 

Ni 1 0.97 0.89 0.76 0.85 

Pb <0.03 <0.015 <0.015 <0.015 0.011 

Hg --- <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.02 0.018 0.015 0.011 0.014 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.29 0.019 0.023 0.028 0.025 

As 0.012 0.0064 0.0062 0.010 0.0057 

Sum cations (meq/L) 29.4 30.7 28.3 27.4 25.9 

Sum anions (meq/L) 30.9 26.9 27.2 28.3 27.6 

Charge imbalance (percent) -5.11 13.2 4.12 -3.24 -6.26 

87 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-11A MMW-11A MMW-11A MMW-11A MMW-11A MMW-11A 

Sample Date 1/12/00 6/22/01 9/10/01 10/27/01 2/6/02 4/30/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) RGC 8/10, MC CD MC CD MC CD MC CD MC CD 

MMW wkst, MC 

DB 

Lab ID Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in silty sand 

Depth to Water (m) 28.4 --- --- --- --- ---

Water Elevation (ft) --- 7,914 7,912 7,911 --- 7,907 

Field Temperature (

o

C) 9.4 10.8 20.3 14.9 9.7 16.3 

pH, field, [lab] 4.31 4.3 4.09 4.15 4.26 4.19 

Eh (V) (0.3) 0.247 0.323 0.342 0.295 0.269 

Spec Cond (PS/cm) field, [lab] 2950 2,470 2,590 2,730 2,570 2,600 

TDS (mg/L) 3,200 2,700 2,900 2,700 2,600 2,500 

Constituent, dissolved (mg/L) 

Ca 300 290 250 240 250 230 

Mg 210 210 190 200 200 190 

Ba 0.014 0.014 <0.01 0.011 <0.01 0.011 

Na 38 32 31 31 36 31 

K 5.7 5.5 5.2 5.4 5.5 6 

SO4 2,100 1,900 1,900 1,900 1,800 1,800 

Alkalinity (as HCO3) <5 <5 <5 <5 <5 <5 

F 46 37 38 43 41 38 

Cl 29 26 29 28 26 25 

SiO2 30 30 28 28 32 30 

Al 100 84 90 90 84 83 

Fe <0.1 <0.1 <0.1 <0.1 <0.1 0.32 

Mn 52 48 47 45 44 45 

Cu 1.5 1.3 1.3 1.3 1.3 1.3 

Zn 9.7 9.8 8.4 8.4 8.399 8.1 

Mo <0.1 <0.1 <0.1 <0.1 0.033 <0.1 

Cd 0.066 0.061 0.058 0.057 0.055 0.057 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0079 0.0069 0.032 

Co 0.48 0.39 0.37 0.39 0.38 0.38 

Ni 1.1 0.98 0.86 0.93 0.89 0.94 

Pb <0.003 <0.015 0.03 <0.015 <0.015 0.01 

Hg --- <0.0002 <0.0002 <0.0002 <0.0002 0.0002 

Be 0.022 0.019 0.018 0.019 0.018 0.017 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.028 0.021 0.018 0.023 0.026 0.027 

As 0.013 0.0067 0.0078 0.0088 0.0079 0.0058 

Sum cations (meq/L) 30.9 29.7 26.1 26.8 28.0 25.6 

Sum anions (meq/L) 30.3 27.1 26.7 27.4 26.3 25.8 

Charge imbalance (percent) 1.80 9.10 -2.32 -2.26 5.98 -1.07 

88 
--- --- --- --- ---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-18B MMW-18B MMW-18B MMW-18B MMW-18B 

1/13/00 9/9/01 11/1/01 2/4/02 5/13/02 

MMW wkst, RGC MC CD MC CD MC CD MC CD 

8/10, MC DB 

Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Well completed in granite 

26.0 --- --- --- ---

--- 7,930 7,930 7,930 7,930 

11.8 18.5 14.3 7.9 13.6 

6.49 6.46 6.48 6.62 6.54 

(0.2) 0.14 0.172 0.164 0.315 

3,550 3,190 3,100 3,110 3,080 

3,600 3,100 3,000 3,000 2,900 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

630 590 660 610 560 

160 150 140 150 140 

0.02 0.02 0.01 0.013 0.014 

99 96 83 91 73 

8.6 8.4 8.3 9.5 8.8 

2,000 1,800 1,800 1,800 1,900 

330 310 310 270 270 

4.1 4.4 6.5 7 6.8 

50 14 5.9 5.8 4.5 

23.5 23.5 21.2 21.4 19.3 

0.52 0.35 0.11 0.11 0.1 

0.23 <0.1 <0.1 <0.1 <0.1 

25 20 17 14 13 

0.023 <0.01 <0.01 0.012 0.022 

14 13 17 16 14 

<0.1 <0.1 <0.1 0.035 0.1 

0.082 0.06 0.07 0.08 0.086 

0.0048 <0.002 <0.0012 <0.002 <0.002 

<0.01 <0.01 <0.0014 0.0048 <0.01 

0.017 <0.01 <0.0063 0.0019 0.0022 

0.073 0.04 0.04 0.047 0.032 

0.03 0.006 <0.01 <0.01 0.013 

--- <0.0002 <0.0002 <0.0002 <0.0002 

0.0053 0.0048 0.0065 0.0069 0.0051 

<0.01 <0.01 <0.01 <0.01 <0.01 

0.01 0.006 0.01 0.01 0.015 

<0.005 <0.005 <0.0025 <0.005 <0.005 

Sum cations (meq/L) 35.9 33.5 35.5 35.1 30.4 

Sum anions (meq/L) 34.0 29.3 29.1 29.5 31.1 

Charge imbalance (percent) 5.36 13.3 19.8 17.3 -2.27 

89 

V 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-19A MMW-19A MMW-19A MMW-19A 

Sample Date 1/13/00 6/22/01 9/10/01 11/1/01 

Comments --- --- --- ---

Source ID (see table 2) MMW wksts, RGC MC CD MC CD MC CD 

8/10, MC DB 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in gravel with silt and sand 

Depth to Water (m) 26.5 --- --- ---

Water Elevation (ft) --- 7,907 7,905 7,904 

Field Temperature (

o

C) 9.9 11.1 16.9 14.4 

pH, field, [lab] 4.25 4.16 4.15 4.46 

Eh (V) (0.3) 0.250 0.297 0.291 

Spec Cond (PS/cm) field, [lab] 2,940 2,630 2,580 2,490 

TDS (mg/L) 3,200 2,700 2,800 2,600 

Constituent, dissolved (mg/L) 

Ca 310 250 250 280 

Mg 210 180 190 200 

Ba <0.01 <0.01 <0.01 0.03 

Na 37 32 31 31 

K 5.4 5.2 5.2 5.4 

SO4 2,100 1,900 1,900 1,900 

Alkalinity (as HCO3) <5 <5 <5 <5 

F 51 43 39 38 

Cl 29 28 29 32 

SiO2 27.8 27.8 27.8 27.8 

Al 98 86 87 87 

Fe 0.12 <0.1 <0.1 <0.1 

Mn 50 48 45 47 

Cu 4.5 1.3 1.3 1.5 

Zn 9.4 8.1 8.3 9 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.067 0.05 0.05 0.06 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0026 

Co 0.47 0.37 0.37 0.38 

Ni 1.1 0.88 0.85 0.95 

Pb <0.03 <0.01 0.03 0.0300 

Hg --- <0.0002 <0.0002 <0.0002 

Be 0.21 0.01 0.01 0.01 

V --- <0.01 <0.01 <0.01 

Se 0.027 0.02 0.02 0.02 

As 0.012 0.008 0.008 0.01 

Sum cations (meq/L) 31.0 26.2 26.1 28.3 

Sum anions (meq/L) 30.5 28.3 27.2 27.1 

Charge imbalance (percent) 1.77 -7.60 -4.11 4.46 

90 
--- --- ---

--- ---

---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-19A MMW-19A 

2/6/02 4/30/02 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

Well completed in gravel with sand and silt 

7,900 7,900 

10.9 11 

4.17 4.1 

0.341 0.39 

2,510 2,590 

2,300 2,500 

MMW-19B 

1/20/00 

MMW wksts, RGC 8/10, MC DB 

Paragon Analytics 

Fractured andesite porphyry 

25.5 

9.7 

7.14 

(0.3) 

2,630 

2,500 

570

89

0.039

56

8.7

1,500

210

2.1

8.4

18.4

<0.1

3.4

6.3

<0.1

0.18

0.16

<0.001

0.0041

<0.01

<0.1

<0.02

<0.006

<0.0002

<0.004 

<0.01 

<0.005 

<0.005 

28.4 

24.6 

14.1 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

250 240

200 200

<0.01 0.0075

35 32

5.6 5.9

1,800 1,800

<5 <5

41 38

27 25

30.0 27.8

83 82

<0.1 0.021

43 44

1.3 1.3

8.3 8.3

<0.1 <0.1

0.055 0.058

<0.002 <0.002

0.0053 0.0061

0.37 0.38

0.89 0.93

<0.015 <0.015

<0.0002 <0.0002

0.018 0.017

<0.01 <0.01

0.023 0.029

0.0066 0.0066

Sum cations (meq/L) 

Sum anions (meq/L) 

27.7 

26.3 

27.2 

26.2 

Charge imbalance (percent) 5.29 3.62 

91 

V 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-27A MMW-27A MMW-27A MMW-27A MMW-27A MMW-27A 

Sample Date 1/12/00 6/18/01 9/9/01 10/28/01 2/6/02 5/13/02 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst, URS, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10, MC DB 

Lab ID Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in gravel 

Depth to Water (m) 29.1 --- --- --- --- ---

Water Elevation (ft) --- 7,916 7,912 7,910 7,910 7,907 

Field Temperature (

o

C) 9.8 11.1 13.4 11.7 14 17.4 

pH, field, [lab] 4.33 4.22 4.17 4.12 4.2 4.14 

Eh (V) (0.3) 0.232 0.330 0.297 0.280 0.303 

Spec Cond (PS/cm) field, [lab] 2,940 2,500 2,530 2,780 2,550 2,570 

TDS (mg/L) 3,300 2,600 2,800 2,700 2,400 2,600 

Constituent, dissolved (mg/L) 

Ca 320 290 260 260 260 240 

Mg 220 200 190 200 200 190 

Ba 0.014 <0.01 <0.01 <0.01 <0.01 0.011 

Na 38 31 32 32 36 30 

K 5.6 5.9 5.4 5.5 5.8 5.8 

SO4 2,100 1,900 1,900 1,900 1,900 1,800 

Alkalinity (as HCO3) <5 <5 <5 <5 <5 <5 

F 54 40 42 40 40 38 

Cl 29 29 28 29 26 25 

SiO2 27.8 27.8 27.8 27.8 30.0 27.8 

Al 92 88 88 88 81 74 

Fe 0.1 0.16 0.11 0.1 0.15 0.14 

Mn 49 46 45 44 43 43 

Cu 1.5 1.5 1.3 1.3 1.3 1.2 

Zn 9.7 8.6 8 8.5 8.2 8.4 

Mo <0.01 <0.1 <0.1 0.02 0.036 <0.1 

Cd 0.068 0.060 0.050 0.05 0.055 0.055 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0079 0.034 0.03 

Co 0.47 0.4 0.35 0.39 0.37 0.35 

Ni 1.1 0.97 0.88 0.95 0.9 0.9 

Pb <0.03 <0.03 <0.01 <0.01 0.015 0.0075 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.022 0.02 0.01 0.01 0.018 0.018 

V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.029 0.01 0.02 0.02 0.026 0.028 

As 0.014 0.006 0.008 0.0085 0.0067 0.0043 

Sum cations (meq/L) 31.5 29.1 27.0 27.9 27.2 25.1 

Sum anions (meq/L) 30.6 27.3 27.6 27.5 27.5 26.0 

Charge imbalance (percent) 3.07 6.55 -2.12 1.17 -0.95 -3.45 

92 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-31A MMW-31A MMW-31A MMW-31A MMW-31A 

Sample Date 6/20/01 9/6/01 12/3/01 1/30/02 4/23/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,919 7,918 7,915 7,912 7,912 

Field Temperature (

o

C) 12 17.1 12.4 8.9 15 

pH, field, [lab] 4.2 4.18 4.17 4.59 4.13 

Eh (V) 0.258 0.364 0.387 0.235 0.237 

Spec Cond (PS/cm) field, [lab] 2,310 2,470 2,640 2,590 2,640 

TDS (mg/L) 2,400 2,600 2,700 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 260 250 260 230 240 

Mg 190 200 200 180 200 

Ba <0.01 <0.01 <0.01 0.047 0.01 

Na 28 30 32 34 34 

K 6 5.6 5.9 5.7 5.9 

SO4 1,700 1,800 1,900 1,700 1,900 

Alkalinity (as HCO3) <5 <5 <5 <5 <5 

F 38 41 42 36 40 

Cl 26 28 27 25 26 

SiO2 27.8 27.8 30.0 32.1 30.0 

Al 77 83 80 73 80 

Fe <0.1 0.12 <0.1 <0.1 0.044 

Mn 41 44 47 44 41 

Cu 1.3 1.4 1.3 1.1 1.3 

Zn 8.3 8.5 8.7 7.8 8.9 

Mo <0.1 <0.1 <0.1 0.028 <0.1 

Cd 0.06 0.06 0.05 0.053 0.06 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 0.02 0.0054 0.0019 0.012 

Co 0.37 0.36 0.36 0.38 0.38 

Ni 0.92 0.99 0.94 0.91 0.98 

Pb <0.03 <0.03 <0.01 <0.015 0.018 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.02 0.02 0.02 0.017 0.021 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.01 0.01 0.02 0.029 0.026 

As <0.005 0.0056 0.0066 0.0091 0.0058 

Sum cations (meq/L) 26.9 26.8 27.3 25.4 26.2 

Sum anions (meq/L) 24.6 25.6 27.8 25.5 27.6 

Charge imbalance (percent) 9.05 4.70 -1.84 -0.13 -5.53 

93 
--- --- --- ---

--- --- --- ---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-31B 

6/20/01 

MC CD 

Paragon Analytics 

Well completed in granite 

7,920 

11.1 

4.03 

0.272 

2,750 

2,900 

MMW-31B 

9/6/01 

MC CD 

Paragon Analytics 

7,918 

17.8 

4.09 

0.383 

2,530 

3,000 

MMW-31B MMW-31B 

12/3/01 1/30/02 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

7,915 7,916 

12.1 6.8 

4.07 4.13 

0.412 0.311 

2,840 2,780 

2,800 2,700 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

310

220

0.02

31

6.3

2,000

<5

42

30

27.8

96

<0.1

50

1.3

9.3

<0.1

0.06

<0.002

<0.1

0.45

1

0.09

<0.0002

0.01

<0.1

0.02

0.0085

290

220

0.02

31

5.5

2,000

<5

43

29

27.8

95

<0.1

51

1.3

9.1

<0.1

0.06

<0.002

<0.1

0.42

1

0.1

<0.0002

0.01

<0.1

0.02

0.0075

300 280 

220 200 

0.02 0.022 

33 36 

5.9 5.8 

2,200 1,900 

<5 <5 

43 40 

33 27 

32.1 32.1 

94 87 

<0.1 <0.1 

49 48 

1.3 1.2 

9.2 8.5 

<0.02 <0.01 

0.06 0.062 

<0.002 <0.002 

<0.00095 0.0037 

0.41 0.42 

0.99 0.97 

0.08 0.11 

<0.0002 <0.0002 

0.01 0.017 

<0.1 <0.01 

0.02 0.036 

0.0077 0.015 

Sum cations (meq/L) 31.6 29.8 30.1 29.5 

Sum anions (meq/L) 28.2 27.6 31.7 27.9 

Charge imbalance (percent) 11.4 7.84 -5.21 5.54 

94 

V 
Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID MMW-32A MMW-32A MMW-32A MMW-32A MMW-32A 

Sample Date 6/18/01 9/9/01 11/2/01 2/2/02 4/24/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,872 7,867 7,865 7,859 7,860 

Field Temperature (

o

C) 11.7 18.7 14.1 7.3 9.1 

pH, field, [lab] 4.55 4.62 4.8 4.64 4.44 

Eh (V) 0.212 0.278 0.238 0.290 0.294 

Spec Cond (PS/cm) field, [lab] 2,710 2,530 2,540 2,600 2,540 

TDS (mg/L) 2,700 2,800 2,700 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 360 320 360 320 240 

Mg 220 190 210 210 190 

Ba <0.01 <0.01 0.0086 0.0072 0.0075 

Na 34 37 34 36 31 

K 6.4 5.5 6.1 6 5.5 

SO4 2,000 1,800 1,900 1,800 1,800 

Alkalinity (as HCO3) <5 6.7 7.7 <5 6.5 

F 36 39 39 34 35 

Cl 27 29 30 26 25 

SiO2 30 30 28 28 30 

Al 83 66 67 72 74 

Fe <0.1 <0.1 <0.1 <0.1 <0.1 

Mn 45 41 45 44 42 

Cu 1.1 1 1.1 1.1 1.1 

Zn 8.2 6.2 8 8 7 

Mo <0.1 <0.1 <0.1 0.044 <0.1 

Cd 0.06 0.04 0.05 0.055 0.05 

Ag <0.002 <0.002 <0.002 <0.002 0.00086 

Cr <0.01 <0.01 0.0049 0.0062 0.013 

Co 0.42 0.31 0.37 0.35 0.34 

Ni 0.95 0.73 0.89 0.85 0.8 

Pb <0.03 <0.01 <0.01 0.015 <0.015 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.02 0.01 0.01 0.016 0.016 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se 0.02 0.02 0.020 0.027 0.024 

As 0.007 0.007 0.0064 0.0082 <0.0073 

Sum cations (meq/L) 32.5 27.6 30.7 30.9 26.0 

Sum anions (meq/L) 27.9 25.6 27.0 25.9 26.9 

Charge imbalance (percent) 15.1 7.49 12.8 17.3 -3.62 

95 
--- --- ---

--- --- ---

Table 6. Selected historical ground-water quality analyses 

Sugar Shack South 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-32B 

9/18/01 

MC CD 

Paragon Analytics 

Well completed in andesite and granite 

7,888 

17.9 

6.66 

0.021 

2,540 

2,700 

MMW-32B MMW-32B 

11/2/01 4/24/02 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

7,887 7,885 

12.3 9.5 

6.63 6.71 

0.035 0.071 

2,560 2,850 

2,600 2,600 

Constituent, dissolved (mg/L) 

Ca 610 

Mg 94 

Ba <0.01 

Na 69 

K 6.4 

SO4 1,600 

Alkalinity (as HCO3) 290 

F 2.6 

Cl 38 

SiO2 21 

Al <0.05 

Fe 1.8 

Mn 3.4 

Cu <0.01 

Zn 1.6 

Mo <0.1 

Cd <0.001 

Ag <0.002 

Cr <0.01 

Co <0.01 

Ni <0.02 

Pb <0.006 

Hg <0.0002 

Be 0.0044 

V <0.01 

Se <0.005 

As <0.005 

Sum cations (meq/L) 29.7 29.6 29.8

Sum anions (meq/L) 27.4 28.3 28.3

Charge imbalance (percent) 8.09 4.54 5.24 

96 

590 600 

95 86 

<0.01 0.011 

72 77 

6.5 7 

1,600 1,600 

300 290 

2.7 3.4

40 36

24 26

<0.05 <0.05

1.9 1.7

3.5 3.5

0.001 <0.01

1.7 1.5

<0.1 <0.1

0.0004 0.00051

0.001 0.0023

0.002 0.0061

0.005 0.0036

<0.01 0.018

<0.006 <0.006

<0.0002 <0.0002

0.005 0.0049

<0.01 <0.01

<0.0025 0.0042

<0.005 <0.005
---

---

Table 6. Selected historical ground water quality analyses 

Sulphur/ Spring Gulch 

Well ID 

Sample Date 

Comments 

Source ID (see table 2) 

MMW-16 

6/22/01 

MC CD 

---

Lab ID Paragon Analytics 

Aquifer Sand gravel over granite 

Sulphur Gulch 

MMW24 MMW-24 MMW-24 

1/12/00 6/23/01 9/5/01 

--- --- ---

MMW wkst, URS, MC CD MC CD 

RGC 8/10, MC 

Paragon Analytics Paragon Paragon 

Analytics Analytics 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

15.3 

4.57 

0.304 

2,520 

2,600 

Well completed in granite 

28.7 --- ---

--- 8,060 8,066 

10.1 15 18.5 

4.79 5.4 5.52 

(0.2) 0.133 0.290 

2,980 3,100 2,960 

3,300 3,000 2,800 

560 580 570 

100 86 83 

0.024 <0.01 <0.01 

77 67 69 

13 15 18 

1,800 1,800 1,700 

<5 9.3 35 

41 43 17 

44 31 28 

38.5 28 20 

53 35 9.8 

0.22 <0.1 <0.1 

14 14 12 

1.4 0.99 0.12 

2.7 2.4 1.5 

<0.1 <0.1 <0.1 

0.02 0.01 0.01 

<0.002 <0.002 <0.002 

<0.01 <0.01 <0.01 

0.23 0.17 0.14 

0.51 0.37 0.32 

<0.006 <0.006 0.009 

<0.0002 <0.0002 <0.0002 

0.023 0.01 0.0091 

<0.01 <0.01 <0.01 

0.01 0.01 0.008 

0.017 0.006 <0.005 

Sum cations (meq/L) 27.3 32.1 29.5 27.7 

Sum anions (meq/L) 24.4 26.6 26.4 25.0 

Charge imbalance (percent) 11.3 18.9 11.0 10.2 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

550

88

<0.01

37

15

1,700

<5

20

24

43

26

0.42

7.9

0.78

2.9

<0.1

0.02

<0.002

<0.01

0.58

0.24

<0.006

<0.0002

0.02

<0.01

0.008

<0.005

97

V 
--- --- ---

--- --- ---

Table 6. Selected historical ground water quality analyses 

Sulphur Gulch 

Well ID MMW-24 MMW-24 

Sample Date 1/26/02 4/17/02 

Comments --- ---

Source ID (see table 2) MC CD MC CD 

Lab ID Paragon Paragon 

Analytics Analytics 

Aquifer Well completed in granite 

Sulphur Gulch Spring Gulch 

MMW-39A MMW-39A MMW-40A 

12/17/01 3/28/02 6/4/02 

MC CD MC CD MC CD 

Paragon Paragon Paragon Analytics 

Analytics Analytics 

Alluvial-colluvial waste rock Bedrock 

--- --- 8,800 

(10) 11.7 16.2 

(4) 4.09 6.26 

(0.3) 0.298 0.250 

--- 4,860 1,070 

5,800 5,700 830 

490 460 140 

400 400 45 

0.0074 0.0088 0.026 

65 64 30 

17 17 3.9 

3,800 3,800 510 

<5 <5 47 

170 170 1.4 

79 74 11 

49 54 39 

180 190 0.05 

<0.1 0.11 <0.1 

120 110 0.017 

5.5 5.9 0.00071 

26 27 0.066 

0.05 0.062 <0.1 

0.19 0.18 0.001 

<0.002 0.00067 <0.002 

<0.01 0.0022 0.00077 

0.5 0.52 0.0061 

2 2 <0.02 

<0.06 0.022 <0.003 

<0.0002 <0.0002 <0.0002 

0.19 0.19 <0.004 

<0.01 0.00052 <0.01 

0.06 0.062 0.0044 

0.02 0.025 0.0017 

51.1 50.1 9.75 

55.2 54.8 9.42 

-7.67 -9.00 3.44 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

--- ---

8,046 8,055 

12.6 16.8 

4.83 4.67 

0.255 409 

2,670 2,770 

2,500 2,700 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

520 510 

13 80 

0.013 0.017 

56 56 

14 16 

1,600 1,700 

<5 5.4 

33 32 

19 18 

36 16 

40 31 

<0.1 <0.1 

13 13 

1 0.88 

2.3 2.1 

<0.1 <0.1 

0.019 0.018 

<0.002 <0.002 

0.015 0.0025 

0.16 0.16 

0.39 0.36 

0.0042 <0.006 

<0.0002 <0.0002 

0.016 0.013 

<0.01 <0.01 

0.0130 0.015 

0.0099 0.0035 

Sum cations (meq/L) 23.6 26.2

Sum anions (meq/L) 24.3 24.9

Charge imbalance (percent) -3.03 4.94 

98

V 
Table 6. Selected historical ground water quality analyses 

Spring Gulch 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

MMW-34B MMW-34B 

9/17/01 10/18/01 

* values transposed from MMW-35B 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

Well completed in bedrock 

--- ---

8,508 8,508 

16.5 18.1 

5.71 5.34 

0.256 0.240 

2,520 3,030 

3,200 3,100 

MMW-34B 

1/22/02 

MMW-34B 

4/12/02 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

---

8,506 

10 

4.88 

0.134 

2,910 

3,100 

---

8,505 

12.4 

4.85 

0.261 

2,920 

3,100 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

630 

64 

0.02 

53 

22 

1,900 * 

22 * 

88 * 

6.4 * 

53

53

0.13

22

0.73

6.5

0.27

0.03

<0.002

<0.01

<0.01

0.11

0.04

<0.0002

0.09

<0.01

0.01

0.0071

640

75

0.05

52

17

2,100

35

120

4.7

73

69

0.14

24

0.96

8.6

0.11

0.04

<0.002

<0.01

<0.01

0.14

0.02

<0.0002

0.12

<0.01

0.02

0.01

600 610

76 73

0.0067 0.006

48 50

16 16

2,000 2,000

7.4 6.8

120 120

4.6 4.9 

71 36 

69 71 

0.15 0.13 

22 22 

0.99 1 

8.1 8 

0.11 0.13 

0.048 0.049 

<0.002 <0.002 

0.029 0.027 

0.0061 0.0062 

0.14 0.14 

0.019 0.0099 

<0.0002 <0.0002 

0.13 0.13 

<0.01 <0.01 

0.023 0.023 

0.016 0.014 

Sum cations (meq/L) 33.3 29.3 28.6 28.9 

Sum anions (meq/L) 33.6 30.4 29.4 29.1 

Charge imbalance (percent) -0.82 -3.67 -2.57 -0.61 

99 

V 
Table 6. Selected historical ground water quality analyses 

Blind/ Sulphur North 

Well ID MMW-35B MMW-35B MMW-35B MMW-35B MMW-35B 

Sample Date 6/19/01 9/17/01 10/18/01 1/22/02 4/12/02 

Comments * values transposed from MMW-34B 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in aplite 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,489 8,494 8,494 8,494 8,490 

Field Temperature (

o

C) 16.2 17.2 17.9 6.3 15.2 

pH, field, [lab] 6.87 6.66 6.62 6.75 6.67 

Eh (V) 0.066 0.053 0.057 0.075 0.061 

Spec Cond (PS/cm) field, [lab] 3,340 3,360 3,530 3,340 3,320 

TDS (mg/L) 3,200 2,900 3,000 3,000 2,900 

Constituent, dissolved (mg/L) 

Ca 840 890 890 830 850 

Mg 39 36 35 39 37 

Ba 0.03 0.02 0.02 0.021 0.024 

Na 49 46 47 51 49 

K 21 19 19 19 20 

SO4 1,500 1,500 * 1,500 1,500 1,500 

Alkalinity (as HCO3) 340 360 * 360 360 350 

F 3.3 2.9 * 2.1 2.7 2.9 

Cl 290 300 * 300 280 260 

SiO2 18 18 18 18 19 

Al <0.05 <0.05 <0.05 0.063 0.0053 

Fe 3.1 0.28 0.25 0.42 0.37 

Mn 6.2 5.2 5.5 5.3 5.5 

Cu <0.01 <0.01 <0.01 <0.01 0.01 

Zn 0.23 0.34 0.42 0.49 0.38 

Mo <0.1 <0.1 <0.07 0.05 0.082 

Cd <0.001 <0.001 <0.00057 0.0007 0.001 

Ag 0.0025 <0.002 <0.002 0.0011 0.002 

Cr <0.01 <0.01 0.0013 0.0058 0.01 

Co 0.03 0.02 0.02 0.029 0.028 

Ni 0.05 0.05 0.05 0.06 0.058 

Pb <0.006 <0.006 <0.009 <0.009 0.009 

Hg <0.0002 <0.0002 <0.0002 <0.0002 0.0002 

Be 0.02 0.04 0.06 0.078 0.079 

V <0.01 <0.01 <0.01 <0.01 0.01 

Se <0.005 <0.005 0.0062 0.0026 0.005 

As <0.005 <0.005 <0.0032 <0.005 0.005 

Sum cations (meq/L) 36.1 35.1 37.6 36.2 36.3 

Sum anions (meq/L) 33.1 29.8 33.2 33.8 32.4 

Charge imbalance (percent) 8.68 16.5 12.3 6.87 11.4 

100 
Table 6. Selected historical ground water quality analyses 

Middle Waste Rock Dump 

Well ID MMW 13 MMW-13 MMW-13 MMW-13 

Sample Date 11/8/94 6/25/97 5/11/98 6/11/98 

Comments --- --- --- ---

Source ID (see table 2) SPRI 1995, SRK NMED, URS URS, MC DB NMED, MC DB 

1995, MMW wkst 

Lab ID ETC ACZ RG 46921 --- ACZ RG 70728 

Aquifer Well completed in sandy gravel overlying quartz monzonite 

Depth to Water (m) 32.3 --- --- 39.0 

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) 8.9 (10) (10) (10) 

pH, field, [lab] 7.9 (7) (7) (7) 

Eh (V) (0.2) (0.2) (0.2) (0.2) 

Spec Cond (PS/cm) field, [lab] 2,280 --- --- ---

TDS (mg/L) 1,400 1360, 1450 1,570 1530, 1670 

Constituent, dissolved (mg/L) 

Ca 316 340 371 370 

Mg 38.7 39.3 40.4 44.3 

Ba 0.036 0.023 --- 0.008 

Na 30 30.5 29.1 31.9 

K 5.4 7 5.1 4.6 

SO4 700 790 880 930 

Alkalinity (as HCO3) 200 201 207 226 

F 1.67 1.6 1.4 1.6 

Cl 14 14 16 16 

SiO2 19 --- --- ---

Al <0.05 0.04 ND 0.04 

Fe 0.198 0.16 ND <0.01 

Mn 1.02 0.706 0.13 0.061 

Cu <0.010 <0.01 ND <0.01 

Zn 0.222 0.36 0.05 0.04 

Mo 0.05 0.05 0.04 0.05 

Cd <0.0005 0.0008 ND <0.0005 

Ag <0.10 --- --- ---

Cr <0.010 --- --- ---

Co 0.013 0.05 ND ---

Ni <0.02 0.01 ND ---

Pb <0.002 --- --- ---

Hg <0.0002 --- --- ---

Be <0.004 --- --- ---

V <0.010 --- --- ---

Se <0.005 0.002 --- ---

As <0.005 --- --- ---

Sum cations (meq/L) 16.3 17.1 17.9 18.1 

Sum anions (meq/L) 14.2 15.5 16.9 18.1 

Charge imbalance (percent) 13.9 9.41 5.75 0.11 

101 
Table 6. Selected historical ground water quality analyses 

Middle Waste Rock Dump 

Well ID MMW-13 MMW-13 MMW-13 MMW-25A 

Sample Date 2/3/00 9/10/01 1/28/02 1/28/02 

Comments --- --- --- ---

Source ID (see table 2) MMW wkst, URS, RGC MC CD MC CD MC CD 

8/10, MCDB 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sandy gravel Gravel with sand/silt 

Depth to Water (m) 37.1 --- --- ---

Water Elevation (ft) --- 7,942 --- 7,981 

Field Temperature (

o

C) 10.1 13.1 8.5 7.8 

pH, field, [lab] 7.19 7.05 7.37 6.99 

Eh (V) (0.2) 0.015 0.132 0.133 

Spec Cond (PS/cm) field, [lab] 1,590 1,870 1,630 2,440 

TDS (mg/L) 1,400 1,600 1,400 2,300 

Constituent, dissolved (mg/L) 

Ca 330 370 350 590 

Mg 29 43 35 55 

Ba 0.012 <0.01 0.02 0.012 

Na 27 30 30 48 

K 7.2 7.2 7 8.2 

SO4 700 880 760 1,400 

Alkalinity (as HCO3) 190 190 150 180 

F 1.9 1.8 1.9 2.1 

Cl 16 14 14 33 

SiO2 13.9 17 18 21.4 

Al 0.13 <0.05 <0.05 <0.05 

Fe <0.1 0.14 <0.1 <0.1 

Mn 0.029 0.28 0.13 0.014 

Cu <0.01 <0.01 0.0007 0.0017 

Zn 0.044 0.06 0.03 0.25 

Mo <0.1 <0.1 0.043 0.028 

Cd <0.001 <0.001 <0.001 0.00039 

Ag <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.00089 

Co <0.01 <0.01 0.0078 <0.01 

Ni <0.02 <0.02 0.0033 0.005 

Pb <0.003 <0.003 <0.003 <0.006 

Hg <0.0005 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 <0.004 

V <0.01 <0.01 <0.01 <0.01 

Se <0.005 <0.005 0.0034 0.0049 

As <0.005 <0.005 0.002 <0.005 

26.9 

23.7 

12.4 

Sum cations (meq/L) 16.1 18.1 17.3 

Sum anions (meq/L) 14.1 16.5 14.3 

Charge imbalance (percent) 13.2 9.18 19.4 

102
Table 6. Selected historical ground water quality analyses 

Middle Waste Rock Dump 

Well ID MMW-25B MMW-25B MMW-25B MMW-25B MMW-25B 

Sample Date 1/12/00 6/20/01 9/8/01 12/4/01 4/19/02 

Comments --- --- --- --- ---

Source ID (see table 2) MMW wkst, URS, MC CD MC CD MC CD MC CD 

RGC 8/10, MC DB 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in granite 

Depth to Water (m) 30.1 --- --- --- ---

Water Elevation (ft) --- 7,980 7,982 7,980 7,980 

Field Temperature (

o

C) 12.9 18.1 16.9 13.5 15.2 

pH, field, [lab] 7 6.73 6.87 6.99 6.94 

Eh (V) (0.2) 0.220 0.092 0.203 -0.006 

Spec Cond (PS/cm) field, [lab] 2,600 2,410 2,450 2,490 2,500 

TDS (mg/L) 2,500 2,300 2,400 2,300 2,300 

Constituent, dissolved (mg/L) 

Ca 570 610 570 580 530 

Mg 57 64 56 57 59 

Ba 0.027 <0.01 <0.01 0.0093 0.013 

Na 55 45 45 49 47 

K 8.4 8.4 8.4 8.7 8.9 

SO4 1,600 1,500 1,400 1,400 1,400 

Alkalinity (as HCO3) 200 180 190 180 180 

F 1.9 1.4 2.1 2.1 1.6 

Cl 33 30 32 34 29 

SiO2 20.1 19 19 21 21 

Al 0.1 5.2 <0.05 <0.05 <0.05 

Fe 0.13 <0.1 <0.1 <0.1 0.22 

Mn 0.27 2.5 0.02 0.03 0.062 

Cu <0.01 0.06 <0.01 0.0018 <0.01 

Zn 0.14 0.59 0.27 0.28 0.21 

Mo <0.1 <0.1 <0.1 0.03 0.035 

Cd <0.001 0.0039 <0.001 <0.001 0.00054 

Ag 0.003 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 <0.0011 <0.01 

Co <0.01 0.02 <0.01 <0.00099 0.0015 

Ni 0.053 0.06 <0.02 0.01 0.13 

Pb <0.006 <0.006 <0.006 <0.006 <0.006 

Hg <0.01 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 0.00055 <0.004 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.01 <0.0056 <0.0055 <0.0039 <0.005 

As <0.005 <0.005 <0.005 <0.005 <0.005 

Sum cations (meq/L) 25.3 27.2 25.4 26.3 24.2 

Sum anions (meq/L) 27.2 24.2 23.4 23.4 23.6 

Charge imbalance (percent) -7.09 11.8 8.03 11.4 2.49 

103 
--- --- --- --- --- --- ---

--- --- --- --- --- --- ---

Table 6. Selected historical ground water quality analyses 

Middle Waste Rock/Sulphur Gulch 

Well ID

Sample Date

Comments

Source ID (see table 2)

Lab ID

Aquifer

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

MMW-29A MMW-29A MMW-29A MMW-29A MMW-29B MMW-29B MMW-29B 

6/14/01 9/5/01 1/25/02 4/22/02 9/5/01 1/25/02 4/22/02 

MC CD MC CD MC CD MC CD MC CD MC CD MC CD 

Paragon Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics Analytics 

7,940 7,939 7,927 7,929 

9.4 20.8 8.1 16 

4.92 4.6 4.61 4.54 

Well completed in sand and gravel Well completed in andesite porphyry 

7,940 7,928 7,929 

18.4 7.8 14.6 

7.27 7.32 7.48 

-0.279 -0.166 -0.313 

1,100 1,120 1,130 

850 870 850 

210 200 210 

32 29 31 

0.02 0.015 0.021 

22 18 19 

3.5 2.7 3.3 

430 470 450 

180 170 180 

2.9 3.5 3.6 

5.2 4.2 4.2 

24 21 20 

<0.05 <0.05 <0.05 

0.19 0.39 0.26 

3.2 3.3 3.2 

<0.01 <0.01 <0.01 

<0.02 0.011 0.011 

<0.1 <0.1 <0.1 

<0.001 <0.001 <0.001 

<0.002 <0.002 <0.002 

<0.01 0.001 0.0014 

<0.01 <0.01 0.00095 

<0.02 0.0021 0.0018 

<0.003 <0.003 <0.003 

0.177 0.246 0.269 0.244 

1,900 1,740 2,170 2,040 

1,800 1,500 2,000 1,900 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

220 200 240 220 

140 130 150 140 

<0.01 <0.01 0.014 0.012 

27 24 31 29 

6.9 6.4 7.4 7.5 

1,200 1,100 1,400 1,300 

5.9 <5 <5 <5 

47 34 43 42 

23 22 28 23 

24 21 24 24 

46 37 48 47 

0.14 <0.1 <0.1 0.18 

23 19 25 22 

0.59 0.53 0.71 0.65 

7.9 6.4 8.6 8.1 

<0.1 <0.1 <0.1 <0.1 

0.06 0.05 0.065 0.062 

<0.002 <0.002 <0.002 0.0019 

<0.01 <0.01 0.0034 0.02 

0.15 0.12 0.16 0.14 

0.57 0.5 0.66 0.64 

<0.009 <0.009 <0.009 <0.009 

<0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

0.01 0.01 0.015 0.015 <0.004 0.0015 0.00098 

<0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 

0.01 0.01 0.017 0.017 <0.005 <0.005 0.0029 

<0.005 <0.005 <0.005 0.0018 <0.005 <0.005 0.0036 

Sum cations (meq/L) 20.9 18.3 22.3 20.3 11.8 11.0 11.6 

Sum anions (meq/L) 19.0 16.7 22.1 20.0 9.73 10.6 10.2 

Charge imbalance (percent) 9.50 9.40 1.10 1.90 19.3 4.42 13.3 

104

V 
Table 6. Selected historical ground water quality analyses 

Middle Waste Rock Dump 

Well ID MMW-30A MMW-30A MMW-30A MMW-30A 

Sample Date 6/7/01 9/7/01 1/24/02 4/22/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) 7,930 7,929 7,920 7,920 

Field Temperature (

o

C) 15.9 15.9 8 15.4 

pH, field, [lab] 4.47 4.47 4.49 4.3 

Eh (V) 0.138 0.201 0.170 0.273 

Spec Cond (PS/cm) field, [lab] 1,930 1,930 2,260 2,450 

TDS (mg/L) 1,300 1,800 2,100 2,300 

Constituent, dissolved (mg/L) 

Ca 140 190 220 230 

Mg 79 130 170 190 

Ba <0.01 <0.01 0.0097 0.01 

Na 17 23 30 32 

K 4 3.8 6.1 6.7 

SO4 850 1,300 1,500 1,700 

Alkalinity (as HCO3) 6.5 <5 <5 <5 

F 20 27 34 40 

Cl 25 24 24 26 

SiO2 20 21 26 28 

Al 37 48 62 70 

Fe <0.1 <0.1 0.14 0.035 

Mn 17 27 38 35 

Cu 0.56 0.57 0.87 0.94 

Zn 4.1 5.3 7.7 8.9 

Mo <0.1 <0.1 <0.1 <0.1 

Cd 0.02 0.04 0.05 0.061 

Ag <0.002 <0.002 <0.002 0.0011 

Cr <0.01 <0.01 0.025 0.011 

Co 0.13 0.2 0.3 0.3 

Ni 0.39 0.59 0.82 0.85 

Pb <0.006 0.009 <0.015 <0.015 

Hg <0.0002 <0.0002 <0.0002 <0.0002 

Be 0.01 0.01 0.019 0.019 

V <0.01 <0.01 <0.01 <0.01 

Se 0.010 0.01 0.023 0.03 

As <0.005 <0.005 0.0057 0.0093 

Sum cations (meq/L) 13.5 18.9 24.1 24.9 

Sum anions (meq/L) 13.9 20.3 22.7 25.0 

Charge imbalance (percent) -2.26 -7.09 5.73 -0.39 

105 
--- --- ---

--- --- ---

Table 6. Selected historical ground-water quality analyses 

Mill Area Wells East of Mill 

Well ID Lab Well, New Mill Well Mill Well 

Mill Well No. 1 No. 1A 

Sample Date 3/19/02 9/9/97 9/9/97 

Comments no alkalinity value 

Source ID (see table 2) MC CD MC DB MC DB 

Lab ID Paragon --- ---

Analytics 

Aquifer Bedrock Alluvium Alluvium 

Depth to Water (m) --- --- ---

Water Elevation (ft) --- --- ---

Field Temperature (

o

C) (10) 7.7 9.4 

pH, field, [lab] (7) 4.9 5.7 

Eh (V) (0.2) (0.2) (0.2) 

Spec Cond (PS/cm) field, [lab] --- 675 535 

TDS (mg/L) 180 555 400 

Constituent, dissolved (mg/L) 

Ca 44 81.3 66 

Mg 7 23.6 17.5 

Ba 0.042 <1 <1 

Na 3.8 9.1 7.7 

K 1.1 1.3 1.2 

SO4 57 370 285 

Alkalinity (as HCO3) 83 --- 12 

F 0.51 1.24 0.81 

Cl 1.6 <10 <10 

SiO2 10 4.2 34.2 

Al <0.05 5.1 0.7 

Fe <0.1 <0.2 <0.2 

Mn 0.0058 1.1 0.8 

Cu 0.048 <0.25 <0.25 

Zn 0.029 0.38 <0.25 

Mo <0.1 <0.02 <0.02 

Cd <0.001 <0.005 <0.005 

Ag <0.002 --- ---

Cr <0.01 --- ---

Co <0.01 <0.02 <0.02 

Ni <0.02 <0.02 <0.02 

Pb <0.003 <0.02 <0.02 

Hg <0.0002 --- ---

Be <0.004 --- ---

V 0.00078 --- ---

Se <0.005 --- ---

As <0.005 <0.001 <0.001 

Sum cations (meq/L) 2.82 5.71 4.38 6.40 6.71 6.84 

Sum anions (meq/L) 2.47 6.43 5.34 6.85 7.16 7.59 

Charge imbalance (percent) 13.2 -11.8 -19.9 -6.85 -6.48 -10.4 

106 

MMW-17A MMW-17A MMW-17A 

6/25/01 9/4/01 10/19/01 

MC CD MC CD MC CD 

Paragon Paragon Paragon 

Analytics Analytics Analytics 

Sand and boulders over fractured rock 

8,108 8,105 8,098 

9.9 14.8 15 

4.46 4.47 4.49 

0.082 0.372 0.304 

719 765 837 

560 610 610 

97 100 100 

26 29 27 

<0.01 <0.01 0.0071

<10 <10 9

1.9 1.9 2.1

400 430 450

<5 <5 <5

2 2 1.8

6.4 5.8 6.2

26 28 28

8.9 11 10

0.5 <0.1 <0.1

1.7 1.8 1.8

0.05 0.04 0.04

0.63 0.63 0.62

<0.1 <0.1 <0.1

0.0023 0.0026 0.0023

<0.002 <0.002 <0.002

<0.01 <0.01 0.0014

0.031 0.036 0.035

0.089 0.098 0.09

<0.003 <0.003 <0.003

<0.0002 <0.0002 <0.0002

<0.004 <0.004 0.0022

<0.01 <0.01 <0.01

<0.005 <0.005 <0.005

<0.005 <0.005 0.0021
Table 6. Selected historical ground-water quality analyses 

Mill Area Wells East of Mill 

Well ID MMW-17B MMW-17B MMW-17B MMW-17B MMW-17B MMW-17B 

Sample Date 1/12/00 6/25/01 9/4/01 10/19/01 1/23/02 4/15/02 

Comments --- --- --- --- *lowered by factor of 10 

Source ID (see table 2) MMW wksts, RGC MC CD MC CD MC CD MC CD MC CD 

8/10, URS, MCDB 

Lab ID SLD HM 2000 Paragon Paragon Paragon Paragon Paragon 

00063 Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in andesite and rhyolite 

Depth to Water (m) 28.3 --- --- --- --- ---

Water Elevation (ft) --- 8,109 8,105 8,098 8,078 8,089 

Field Temperature (

o

C) 10 11.5 17.7 13.6 9 14.4 

pH, field, [lab] 4.76 5.54 4.4 4.44 4.79 4.45 

Eh (V) (0.3) 0.103 0.347 0.273 0.256 0.287 

Spec Cond (PS/cm) field, [lab] 887 847 777 841 814 * 807 

TDS (mg/L) 790 600 610 610 630 620 

Constituent, dissolved (mg/L) 

Ca 110 93 100 110 100 97 

Mg 30 25 29 27 28 26 

Ba 0.019 <0.01 <0.01 0.0074 0.21 0.0085 

Na 10 <10 <10 9.20 9.30 8.9 

K 2 1.8 1.8 1.7 1.8 1.6 

SO4 480 430 430 450 440 440 

Alkalinity (as HCO3) <5 <5 <5 <5 <5 <5 

F 1.9 1.9 1.4 1.7 1.8 1.3 

Cl 5.1 5.5 5.7 5.7 5.4 4.6 

SiO2 32 30 28 28 26 28 

Al 11 12 11 10 8.8 10 

Fe <0.1 0.41 <0.1 <0.1 0.016 0.075 

Mn 2 1.9 1.8 1.8 1.8 1.8 

Cu 0.11 0.05 0.048 0.04 0.057 0.044 

Zn 0.74 0.59 0.62 0.61 0.6 0.57 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 

Cd 0.0028 0.0023 0.0026 0.0024 0.0022 0.0019 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 <0.01 0.0019 <0.01 0.012 

Co 0.04 0.035 0.036 0.03 0.035 0.034 

Ni 0.11 0.092 0.11 0.09 0.094 0.11 

Pb <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 

Hg --- <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 <0.004 0.0022 0.0019 0.0025 

V --- <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.005 <0.005 <0.005 <0.005 0.0053 <0.005 

As <0.005 <0.005 <0.005 0.0023 <0.005 <0.005 

Sum cations (meq/L) 7.58 6.21 6.66 7.29 6.95 6.66 

Sum anions (meq/L) 8.04 7.36 7.07 7.51 7.53 7.37 

Charge imbalance (percent) -5.85 -16.9 -5.97 -3.02 -8.03 -10.1 

107 
Table 6. Selected historical ground-water quality analyses 

Mill Area Wells 

Well ID MMW-28A MMW-28A MMW-28A MMW-28A MMW-28A 

Sample Date 6/25/01 9/4/01 10/23/01 1/24/02 4/17/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Well completed in sand and gravel 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,076 8,075 8,062 8,046 8,059 

Field Temperature (

o

C) 10.4 19.8 11.7 5.3 11.3 

pH, field, [lab] 6.26 5.95 6.08 6.12 6.01 

Eh (V) 0.095 0.322 0.201 0.170 0.366 

Spec Cond (PS/cm) field, [lab] 936 966 1,007 7,910 943 

TDS (mg/L) 740 730 730 570 710 

Constituent, dissolved (mg/L) 

Ca 160 160 150 130 140 

Mg 33 35 32 28 31 

Ba 0.013 0.014 0.017 0.012 0.015 

Na 16 17 17 14 16 

K 2.9 3 3.4 2.5 2.4 

SO4 430 460 410 340 430 

Alkalinity (as HCO3) 63 67 93 66 63 

F 0.72 0.83 0.6 0.77 0.71 

Cl 11 11 12 10 9.2 

SiO2 16 17 18 16 18 

Al 0.27 0.23 0.14 0.17 0.21 

Fe <0.1 <0.1 <0.1 0.072 <0.1 

Mn 0.042 0.052 0.0073 0.021 0.038 

Cu <0.01 <0.01 0.0025 0.0016 <0.01 

Zn 0.15 0.15 0.1 0.12 0.13 

Mo <0.1 <0.1 0.027 <0.1 <0.1 

Cd <0.001 <0.001 0.0003 0.00062 <0.001 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.0011 0.0024 <0.01 

Co <0.01 <0.01 <0.01 0.00069 <0.01 

Ni <0.02 <0.02 0.01 0.012 0.013 

Pb <0.003 <0.003 <0.003 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 0.00007 0.0006 0.0006 

V <0.01 <0.01 <0.01 0.0026 <0.01 

Se <0.005 <0.005 <0.005 0.002 <0.005 

As <0.005 <0.005 <0.005 0.0028 <0.005 

Sum cations (meq/L) 9.52 9.42 9.10 8.13 8.48 

Sum anions (meq/L) 8.35 8.73 8.57 7.10 8.43 

Charge imbalance (percent) 13.1 7.54 6.04 13.6 0.50 

108 
Table 6. Selected historical ground-water quality analyses 

Mill Area Wells 

Well ID MMW-28B MMW-28B MMW-28B MMW-28B MMW-28B 

Sample Date 6/25/01 9/4/01 10/23/01 1/24/02 4/17/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in granite 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,075 8,074 8,062 8,046 8,059 

Field Temperature (

o

C) 10.6 21.6 16.1 3.6 12.5 

pH, field, [lab] 4.76 4.61 4.59 4.86 4.58 

Eh (V) 0.035 0.338 0.134 0.120 0.323 

Spec Cond (PS/cm) field, [lab] 977 956 990 928 973 

TDS (mg/L) 780 740 770 690 760 

Constituent, dissolved (mg/L) 

Ca 150 140 130 130 130 

Mg 38 38 35 32 33 

Ba <0.01 0.02 0.011 0.011 0.01 

Na 16 16 16 16 16 

K 2.4 2.6 2.5 2.5 2.1 

SO4 530 510 520 490 520 

Alkalinity (as HCO3) 14 5.1 <5 <5 <5 

F 2.3 3.1 2.3 1.8 2.2 

Cl 12 9.1 8.9 10 7.8 

SiO2 20 21 21 18 21 

Al 7.2 7.8 7.8 5.1 7.3 

Fe 0.16 <0.1 <0.1 0.094 0.023 

Mn 3.1 2.4 2.3 1.9 2.2 

Cu 0.031 0.078 0.023 <0.01 <0.01 

Zn 0.79 0.82 0.76 0.62 0.7 

Mo <0.1 <0.1 0.023 <0.1 <0.1 

Cd 0.0052 0.0055 0.0046 0.004 0.0042 

Ag <0.002 <0.002 <0.002 <0.002 <0.002 

Cr <0.01 <0.01 0.0023 0.0067 0.0027 

Co 0.033 0.03 0.033 0.026 0.026 

Ni 0.086 0.092 0.088 0.073 0.086 

Pb <0.003 <0.003 <0.003 <0.003 <0.003 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 0.0017 0.0018 0.002 

V <0.01 <0.01 <0.01 <0.01 <0.01 

Se <0.005 <0.005 <0.005 <0.005 <0.005 

As <0.005 <0.005 0.003 <0.005 <0.005 

Sum cations (meq/L) 9.74 9.16 8.61 8.53 8.50 

Sum anions (meq/L) 9.13 8.40 8.68 8.56 8.77 

Charge imbalance (percent) 6.46 8.70 -0.77 -0.27 -3.05 

109 
Table 6. Selected historical ground-water quality analyses 

Mill Area Wells 

Well ID MMW-43A MMW-43A MMW-43A MMW-43A MMW-43A 

Sample Date 6/14/01 9/7/01 10/23/01 1/30/02 4/15/02 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Aquifer Well completed in alluvium 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,098 8,097 8,084 --- 8,078 

Field Temperature (

o

C) 9.7 14.2 15.6 7.7 17.6 

pH, field, [lab] 6.43 6.88 6.89 7.02 6.9 

Eh (V) 0.039 -0.032 -0.017 -0.013 -0.024 

Spec Cond (PS/cm) field, [lab] 2,170 2,180 2,320 2,050 2,140 

TDS (mg/L) 2,000 2,000 2,000 1,800 1,900 

Constituent, dissolved (mg/L) 

Ca 470 450 430 400 400 

Mg 92 92 95 78 79 

Ba 0.037 0.042 0.055 0.033 0.044 

Na 33 32 34 34 33 

K 5.2 5.5 5.2 4.9 5 

SO4 1,200 1,200 1,200 1,100 1,200 

Alkalinity (as HCO3) 230 240 240 210 230 

F 1.9 1.7 1.5 2 1.5 

Cl 14 14 14 13 13 

SiO2 24 24 24 26 30 

Al 0.13 <0.05 <0.05 0.052 1.6 

Fe 3.2 3 2.9 2.5 5.7 

Mn 3.1 3.1 2.9 2.7 2.9 

Cu <0.01 <0.01 <0.01 <0.01 0.0034 

Zn 0.093 0.069 0.098 0.11 0.17 

Mo <0.1 <0.1 <0.1 <0.1 <0.1 

Cd <0.001 <0.001 <0.001 <0.001 <0.001 

Ag <0.002 <0.002 <0.002 0.0011 <0.002 

Cr <0.01 <0.01 <0.01 0.0016 0.012 

Co <0.01 <0.01 0.0032 0.0034 0.0035 

Ni <0.02 <0.02 <0.0071 0.013 0.022 

Pb <0.003 <0.003 <0.003 <0.003 0.0014 

Hg <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 

Be <0.004 <0.004 0.00027 0.00074 0.0014 

V <0.01 <0.01 <0.01 <0.01 0.0017 

Se <0.005 <0.005 <0.005 <0.005 <0.005 

As <0.005 <0.005 0.0025 <0.005 <0.005 

Sum cations (meq/L) 24.7 23.5 22.9 21.3 20.5 

Sum anions (meq/L) 21.1 21.1 21.1 20.0 21.3 

Charge imbalance (percent) 15.7 10.7 7.80 6.71 -3.86 

110 
Table 6. Selected historical ground water quality analyses 

Ranger Station Junebug Camp- Elephant Rock Bitter Creek Well ground Campground 

Well ID BC Ranch Well RSTW GW-8 GW-9 

Sample Date 6/17/00 5/17/00 11/8/94 11/8/94 

Comments --- --- no F value no F value 

Source ID (see table 2) RGC 8-12 RGC 8-12 WC '96 WC '96 

Lab ID Paragon Analytics Paragon Analytics ETC ETC 

Aquifer --- --- Alluvium Alluvium 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) (10) (10) (10) (10) 

pH, field, [lab] [3.8] 7.14 (7) (7) 

Eh (V) (0.1) (0.1) (0.1) (0.1) 

Spec Cond (PS/cm) field, [lab] [680] [332] --- ---

TDS (mg/L) 490 220 --- ---

Constituent, dissolved (mg/L) 

Ca 54 46 32.9 31.3 

Mg 31 10 6.74 6.12 

Ba 0.010 0.029 0.0309 0.0278 

Na 16.0 <10 3.95 3.62 

K 3 1.1 0.676 0.655 

SO4 320 100 60.6 50 

Alkalinity (as HCO3) 5 48 57 59 

F 1.40 1.1 --- ---

Cl 1.70 3.6 <5 <5 

SiO2 --- --- --- ---

Al 3.30 <0.1 0.0621 <0.0543 

Fe 0.87 <0.1 0.124 <0.0542 

Mn 2.5 <0.01 0.0713 0.0017 

Cu 0.04 <0.01 <0.008 <0.008 

Zn 0.81 0.58 0.247 0.0952 

Mo 0.10 <0.1 <0.02 <0.02 

Cd 0.0017 <0.001 <0.0024 <0.0024 

Ag 0.002 <0.002 <0.061 <0.0061 

Cr 0.01 <0.01 <0.0029 <0.0029 

Co 0.037 <0.01 <0.0042 <0.0042 

Ni 0.062 <0.02 <0.0053 <0.0053 

Pb 0.003 <0.003 <0.0019 <0.0019 

Hg --- --- <0.0001 <0.0001 

Be 0.004 <0.004 <0.0002 <0.0002 

V 0.01 <0.01 <0.002 <0.002 

Se 0.005 <0.005 0.0026 <0.0025 

As 0.005 <0.005 <0.0024 <0.0024 

Sum cations (meq/L) 5.63 2.91 2.27 2.14 

Sum anions (meq/L) 5.77 2.77 2.07 1.90 

Charge imbalance (percent) -2.36 4.80 9.44 11.6 

111 
Table 6. Selected historical ground water quality analyses 

Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 11/11/82 11/8/94 4/13/00 3/1/02 3/27/02 

Comments MC DB 45.1 MCDB 92.5 MCDB 0.0055 --- ---

Source ID (see table 2) Culp/Wesner/ Culp, WC '96, MC RGC 8/13, RGC Lab sheet MC CD 

Russell Church DB 8/10, MCDB 

Lab ID Industrial Lab Co. ETC Paragon Paragon Paragon 

Analytics Analytics Analytics 

Aquifer Well completed in bedrock 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) (10) (10) (10) (10) (10) 

pH, field, [lab] (4) 3.9 (4) (4) (4) 

Eh (V) (0.5) (0.5) (0.5) (0.5) (0.6) 

Spec Cond (PS/cm) field, [lab] --- --- --- --- (1,400) 

TDS (mg/L) 985 1,410 --- --- 1300, 1350 

Constituent, dissolved (mg/L) 

Ca 135 151 160 160 155 

Mg 48 48.8 51 52 53.9 

Ba 0.4 0.0034 0.016 0.013 0.005 

Na 32 14.7 15 16 16.1 

K 3.0 2.55 2.6 3.7 2.9 

SO4 705 907 910 910 980 

Alkalinity (as HCO3) <3.0 <5 --- --- <10 

F 1.4 --- --- --- 2.7 

Cl 4.3 6 5.5 0.51 5 

SiO2 --- --- 64.2 64.2 ---

Al --- 37.5 34 36 38.7 

Fe 60 32 36 37 34.4 

Mn 3.9 5.91 5.6 5.7 5.63 

Cu --- 0.0451 1 <0.01 <0.01 0.0014 

Zn --- 1.96 2.1 2.1 2.03 

Mo --- 0.033 <0.1 <0.1 <0.0005 

Cd <0.01 0.0055 0.002 0.0036 0.0041 

Ag <0.01 <0.0061 <0.002 <0.002 <0.0005 

Cr <0.01 0.0114 0.24 0.099 0.083 

Co --- 0.0925 2 0.1 0.11 0.0872 

Ni --- 0.223 0.27 0.28 0.27 

Pb 0.02 <0.0019 <0.003 0.003 0.0001 

Hg <0.001 <0.0001 --- 0.000054 <0.001 

Be --- 0.0056 3 0.0053 0.0049 0.0047 

V --- <0.002 <0.01 0.002 <0.03 

Se <0.01 <0.0025 <0.005 0.0067 <0.005 

As <0.01 <0.0024 <0.005 0.0022 <0.003 

Sum cations (meq/L) 12.6 12.5 14.0 14.3 13.1 

Sum anions (meq/L) 11.6 13.5 13.5 13.2 14.8 

Charge imbalance (percent) 8.34 -7.91 3.70 8.20 -12.4 

112 
Table 6. Selected historical ground water quality analyses 

Straight Creek 

Well ID SC-1B SC-2B SC-3A SC-3B 

Sample Date 3/26/02 3/25/02 3/25/02 3/26/02 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID Paragon Paragon Analytics Paragon Analytics Paragon Analytics 

Analytics 

Aquifer Bedrock Mixed/Bedrock Alluvium Bedrock 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) (8) (7) (7) (7) 

pH, field, [lab] (7) (7) (4) (6) 

Eh (V) (0.3) (0.3) (0.8) (0.4) 

Spec Cond (PS/cm) field, [lab] (3,300) (2,600) (2,300) (3,000) 

TDS (mg/L) 3,230 2,380 2,300 2800 

Constituent, dissolved (mg/L) 

Ca 518 477 306 494 

Mg 227 117 90.9 152 

Ba 0.014 0.007 <0.02 0.006 

Na 61.7 21.2 15.5 31.6 

K 13.7 3.8 1.1 2.5 

SO4 2,020 1,620 1,770 1,970 

Alkalinity (as HCO3) 405 129 <10 83 

F 1.7 6.8 1.1 6.8 

Cl 14 5 10 5 

SiO2 --- --- --- ---

Al <0.3 1.02 85 4.85 

Fe 3 34.7 0.53 54.1 

Mn 6.08 16.8 14.9 23 

Cu 0.004 0.0071 0.799 0.0022 

Zn 0.69 1.37 5.29 4.16 

Mo 0.004 0.0006 0.0004 0.0001 

Cd 0.0002 0.0002 0.0232 0.0005 

Ag <0.0005 <0.0005 <0.003 <0.001 

Cr 0.0015 0.0006 0.012 0.0007 

Co 0.00695 0.156 0.205 0.204 

Ni <0.1 0.46 0.52 0.43 

Pb <0.0005 0.0003 0.0006 0.0417 

Hg <0.001 <0.001 <0.001 <0.001 

Be 0.0003 0.0163 0.016 0.0188 

V <0.05 <0.05 <0.05 <0.05 

Se <0.005 <0.005 <0.005 <0.005 

As 0.0005 0.0005 <0.03 0.0006 

Sum cations (meq/L) 

Sum anions (meq/L) 

33.9 

35.1 

25.9 

25.8 

21.4 

24.5 

28.9 

29.9 

Charge imbalance (percent) -3.52 0.51 -13.6 -3.12 

113 
Table 6. Selected historical ground water quality analyses 

Straight Creek 

Well ID SC-4A SC-5A SC-5B 

Sample Date 3/25/02 3/27/02 3/27/02 

Comments --- --- ---

Source ID (see table 2) MC CD MC CD MC CD 

Lab ID Paragon Analytics Paragon Analytics Paragon Analytics 

Aquifer Alluvial Alluvium Mixed/Bedrock 

Depth to Water (m) --- --- ---

Water Elevation (ft) --- --- ---

Field Temperature (

o

C) (7) (7) (8) 

pH, field, [lab] (4) (4) (8) 

Eh (V) (0.6) (0.8) (0.3) 

Spec Cond (PS/cm) field, [lab] (2,500) (1,600) (2,400) 

TDS (mg/L) 2,390 1,210 2,260 

Constituent, dissolved (mg/L) 

Ca 292 130 524 

Mg 138 50.8 38 

Ba <0.02 <0.01 0.029 

Na 25.6 14 42.7 

K 2.9 1.8 4.7 

SO4 1,790 930 1,410 

Alkalinity (as HCO3) <10 <10 130 

F 4.2 <2.4 1.8 

Cl 4 5 8 

SiO2 --- --- ---

Al 57.5 50.1 <0.3 

Fe 50.9 0.41 4.3 

Mn 18.7 5.66 2.66 

Cu 0.072 0.162 0.0026 

Zn 5.22 2.23 <0.1 

Mo <0.0005 <0.0005 0.005 

Cd 0.0129 0.0081 <0.0005 

Ag <0.001 <0.0005 <0.0005 

Cr 0.0022 0.0042 <0.0007 

Co 0.216 0.0971 0.00725 

Ni 0.54 0.25 <0.1 

Pb <0.0005 <0.0005 <0.0005 

Hg <0.001 <0.001 <0.001 

Be 0.0146 0.0057 <0.001 

V <0.05 <0.03 <0.05 

Se <0.005 <0.005 <0.005 

As <0.01 <0.003 <0.003 

Sum cations (meq/L) 

Sum anions (meq/L) 

24.2 

25.5 

11.9 

13.7 

22.7 

23.1 

Charge imbalance (percent) -5.26 -14.3 -1.79 

114 
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

[ACZ, New Mexico state lab; b, low bias; C.I., Charge Imbalance; ETC, Molycorp lab; ft, feet; ID, Identification; J, estimated concentration; m, meter; 

meq/L, milliequivalents per liter; mg/L, milligrams per liter; PS/cm, microsemens per centimeter; MC CD, Molycorp database on compact disc; 

MC DB, Molycorp electronic database prior to DP-1055; MMW, Mine Monitoring Well; MMW wkst, Molycorp in-house document; ND, non-detectable; 

RGC, Robertson GeoConsultants; SLD, New Mexico state lab; Spec Cond, Specific Conductance; SPRI, South Pass Resources Investigations, Inc.; 

u, non-detect; V, volts; [ ], lab value or total value; ---, no data; <, less than; #, rounded down to 3 significant figures; *, special note] 

Geographic Location Questa Ranger Station Capulin Canyon Valley 

Well ID RSTW RSTW

Sample Date 8/24/93 5/17/00

Miscellaneous information unfiltered ---

[total] 

Comments --- ---

Source ID (see table 2) Slifer 1996 RGC 8-12 

Appendix A 

Lab ID (see table 2) SLD ACZ, Paragon 

Depth to water (m) --- ---

Water elevation (ft) --- ---

Field temperature (o

C) --- ---

pH, field, [lab] 7.3 7.14 

Eh (V) --- ---

Spec Cond (PS/cm) field, [lab] 215 [332] 

TDS (mg/L) --- 220 

Constituent, dissolved (mg/L) 

Ca --- 46 

Mg --- 10 

Ba --- 0.029 

Na --- < 10 

K --- 1.1 

SO4 96 100 

Alkalinity (as HCO3) --- 48 

F --- 1.1 

Cl --- 3.6 

SiO2 --- ---

Al [< 0.1] < 0.1 

Fe [< 0.1] < 0.1 

Mn [< 0.05] < 0.01 

Cu [< 0.05] < 0.01 

Zn [0.09] 0.58 

Mo [< 0.1] < 0.1 

Cd [0.001] < 0.001 

Ag --- < 0.002 

Cr --- < 0.01 

Co [< 0.05] < 0.01 

Ni [< 0.1] < 0.02 

Pb [0.018] < 0.003 

Hg --- ---

Be --- < 0.004 

V --- < 0.01 

Se --- < 0.005 

As --- < 0.005 

Sum cations (meq/L) --- 2.91 

Sum anions (meq/L) --- 2.77 

Charge imbalance (percent) --- 4.80 

MMW-2 MMW-2 MMW-2 

11/8/94 11/8/94 11/8/94 

filtered, complimentary filtered, complimentary filtered 

analyses analyses 

*1 Fe = 61 SLD results & --- ---

Slifer / 46 SLD remarks 

Slifer 1996 Slifer 1996 SPRI '95, SRK '95, MC 

DB, MMW wkst 

SLD IC 940669 SLD WC 946438 ETC 

9.66 9.66 9.66 

--- --- ---

--- --- 7.9 

7.3, [3.86] [3.86] 4.9 

--- --- ---

[3,140 #] [3,140 #] 3,680 

3,520 # 3520 # 3,400 

600 --- 501 

150 --- 137 

< 0.1 --- < 0.01 

--- 81 64.6 

--- 28 10.8 

--- 2,180 # 2,100 

< 3 < 3 < 1 

--- 28 24 

--- < 5 6.8 

49.2 --- 43 

68 --- 63.5 

46 *1 --- 50.8 

53 --- 52.1 

< 0.1 --- 0.088 

10 --- 9.48 

< 0.01 --- < 0.02 

0.02 --- 0.024 

< 0.01 --- < 0.1 

< 0.01 --- < 0.01 

0.33 --- 0.28 

0.7 --- 0.61 

< 0.01 --- < 0.002 

< 0.0005 --- < 0.0002 

0.03 --- 0.015 

< 0.01 --- < 0.01 

< 0.05 --- < 0.05 

0.02 --- < 0.005 

--- --- 34.2 

--- --- 28.9 

--- --- 16.7 

115 
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-2 MMW-2 MMW-2 MMW-2 MMW-2 MMW-2 

Sample Date 6/1/95 4/17/96 8/1/96 1/1/97 6/25/97 11/7/97 

Miscellaneous information filtered filtered filtered pumped dry filtered MC DB sited 

reference FM 

from M3.000 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst MMW wkst MMW wkst MMW wkst NMED: ACZ lab MC DB 

sheet, MC DB 

Lab ID (see table 2) --- --- --- --- ACZ RG 46912 ---

Depth to Water (m) --- 10.5 --- --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- 9.7 --- 9.2 --- 10.6 

pH, field, [lab] 4.92 5.29 4.58 5.16 --- 3.74 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 2,980 3,010 3,010 2,560 [2,500] ---

TDS (mg/L) --- 3,480 # --- --- 2440, 2600 ---

Constituent, dissolved (mg/L) 

Ca --- --- 460 --- 337 ---

Mg --- 166 # 125 # --- 107 ---

Ba --- < 0.1 < 0.01 --- < 0.006 ---

Na --- 72 61 --- 43 ---

K --- --- 12 --- 8 ---

SO4 2,210 # 2,220 # 2,000 --- 1,660 ---

Alkalinity (as HCO3) --- < 1 --- --- < 2 ---

F 25.2 21.9 --- --- 17 ---

Cl --- --- 7 --- 6 ---

SiO2 --- --- 51 --- 180 ---

Al 17.9 31.2 # 68 --- 97.2 ---

Fe 23.3 27 46.7 # --- 23.8 ---

Mn 37.8 38.8 25.4 --- 47.9 ---

Cu 0.07 0.114 0.139 --- 0.38 ---

Zn 7.8 7.93 9.18 --- 9.68 ---

Mo < 0.02 < 0.02 0.02 --- < 0.02 ---

Cd 0.022 0.035 0.0041 --- 0.03 ---

Ag --- < 0.01 < 0.05 --- < 0.003 ---

Cr --- < 0.01 < 0.01 --- < 0.02 ---

Co --- 0.24 0.28 --- 0.32 ---

Ni --- 0.53 0.63 --- 0.7 ---

Pb < 0.1 < 0.005 --- --- 0.004 ---

Hg --- < 0.0002 < 0.0002 --- < 0.0002 ---

Be --- 0.025 0.032 --- 0.039 ---

V --- < 0.01 < 0.01 --- < 0.01 ---

Se --- 0.012 0.022 --- < 0.001 ---

As --- 0.07 0.08 --- < 0.005 ---

Sum cations (meq/L) --- --- 31.3 --- 28.0 ---

Sum anions (meq/L) --- --- 26.4 --- 22.0 ---

Charge imbalance (percent) --- --- 16.8 --- 23.9 ---

116
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-2 MMW-2 MMW-2 MMW-2 

Sample Date 

Miscellaneous information 

6/9/98 

filtered 

6/9/98 

filtered 

6/9/98 

filtered 

2/4/00 

filtered 

Comments --- --- *1 Cl one order of mag too 

high, plotted as 6.68 

---

Source ID (see table 2) 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

NMED: ACZ lab sheet, 

MC DB 

ACZ RG 70639 

10.7 

9.9 

4.27 

2,920 

2780, 3080 

---

---

NMED: SLD lab sheet 

SLD HM 98-01017 

9.9 

4.27 

---

---

---

---

---

NMED: SLD lab sheet 

SLD WC-98 02507 

10.7 

9.9 

4.27 

2,920 

2,960 

---

---

MC DB, MMW wkst, 

RGC 8/10 

Paragon Analytics 

10.6 

9.1 

4.01 

2,540 

2,600 

---

---

Constituent, dissolved (mg/L) 

Ca 343 --- 337 280 

Mg 122 54 118 96 

Ba < 0.01 --- --- < 0.01 

Na 44.9 --- 40.5 42 

K 10.2 --- 9.62 11 

SO4 2,020 --- 2,070 1,700 

Alkalinity (as HCO3) < 2 --- --- 10 

F 28 --- --- 20 

Cl 7 --- 66.8 *1 7.1 

SiO2 64 --- --- 68 

Al 95.9 85 --- 76 

Fe 46 52 --- 29 

Mn 49.8 --- --- 46 

Cu 0.19 < 0.5 --- 0.25 

Zn 9.98 9.4 --- 8.4 

Mo < 0.01 < 0.05 --- < 0.1 

Cd 0.03 0.03 --- 0.03 

Ag < 0.0005 < 0.05 --- < 0.002 

Cr < 0.01 < 0.05 --- < 0.01 

Co 0.32 --- --- 0.29 

Ni 0.73 0.79 --- 0.65 

Pb 0.003 < 0.01 --- < 0.03 

Hg < 0.0002 --- --- < 0.0002 

Be 0.031 --- --- 0.033 

V < 0.005 --- --- < 0.01 

Se < 0.001 < 0.05 --- 0.026 

As < 0.001 < 0.05 --- 0.055 

Sum cations (meq/L) 

Sum anions (meq/L) 

28.5 

28.3 

---

---

18.5 

33.2 

23.6 

24.8 

Charge imbalance (percent) 0.62 --- -56.9 -5.09 

117
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-2 MMW-2 MMW-2 MMW-2 MMW-2 

Sample Date 6/6/01 8/27/01 10/26/01 2/21/02 6/3/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytic 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,664 7,666 7,664 7,666 7,665 

Field Temperature (o

C) 10 17.7 15.1 9 21.1 

pH, field, [lab] 4.57 5.87 4.45 4.18 4.09 

Eh (V) 0.28 0.131 0.253 0.317 0.314 

Spec Cond (PS/cm) field, [lab] 2,370 2,440 2,500 2,320 2,300 

TDS (mg/L) 2,500 2,500 2,500 2,500 2,400 

Constituent, dissolved (mg/L) 

Ca 320 490 310 300 260 

Mg 100 72 98 100 95 

Ba < 0.01 0.01 0.0086 < 0.01 0.0067 

Na 42 71 46 43 37 

K 12 12 12 12 11 

SO4 1,800 1,700 1,700 1,800 1,700 

Alkalinity (as HCO3) < 5 50 < 5 < 5 < 5 

F 19 12 18 19 21 

Cl 5.3 7.4 6.7 8.7 6.4 

SiO2 62 26 56 68 68 

Al 67 8.4 61 67 71 

Fe 43 19 43 39 41 

Mn 38 21 38 41 40 

Cu 0.19 0.049 0.14 0.17 0.18 

Zn 7.8 4.1 7.3 8.5 7.4 

Mo < 0.1 < 0.1 0.027 < 0.1 < 0.1 

Cd 0.025 0.011 0.023 0.025 0.024 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.0015 0.0016 0.0068 

Co 0.26 0.11 0.24 0.26 0.25 

Ni 0.56 0.25 0.54 0.57 0.55 

Pb < 0.015 0.009 < 0.015 < 0.015 < 0.015 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.03 0.015 0.026 0.028 0.03 

V < 0.01 < 0.01 0.0013 0.0013 0.0011 

Se 0.014 0.011 0.021 0.022 0.013 

As 0.036 0.025 0.039 0.047 0.035 

Sum cations (meq/L) 24.4 24.8 23.6 23.8 21.4 

Sum anions (meq/L) 26.1 25.6 24.3 26.5 24.2 

Charge imbalance (percent) -6.49 -3.09 -2.91 -10.4 -12.3 

118
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 11/7/94 11/7/94 11/7/94 11/7/94 

Miscellaneous information filtered discrepency below: SLD filtered and unfiltered filtered 

results/SLD remarks [Total] 

Comments --- *1 Al=1.0 /0.7, *2 Mn= --- difference in MC DB: Ca= 

33/37, *3 Zn= 1.3/1.2, *4 659, Mg= 108; and MMW 

Co= 0.07 /0.08 wkst: Al= 0.63 

Source ID (see table 2) Slifer 1996 Slifer 1996 WC 96 SPRI '95, WC 96, SRK '95, 

MC DB, MMW wkst 

Lab ID (see table 2) SLD WC 94-6427 SLD IC 94-0658 ETC ETC 

Depth to Water (m) --- 8.5 --- 8.46 

Water Elevation (ft) --- --- --- ---

Field Temperature (o

C) --- --- --- 10.9 

pH, field, [lab] [7.63] 7.5 7.5 7.5 

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] [2,720 #] 2,050 3,970 3,970 

TDS (mg/L) 3,070 3,070 2,990 2,900 

Constituent, dissolved (mg/L) 

Ca 498 640 571 [589] 567 

Mg 112 110 94.7 [95.3] 96.2 

Ba --- < 0.1 0.0524 J [0.0502 J] 0.047 

Na 103 --- 107 J [107] 103 

K 10 --- 6.37 [6.37] 7.5 

SO4 1,760 # --- 17.4 J 1,700 

Alkalinity (as HCO3) 209 --- 240 222 

F 2.8 --- --- 2.59 

Cl < 5 --- 6 5.8 

SiO2 --- 15.2 --- 16.3 

Al --- 0.7 *1 1.42 [4.53] 0.75 

Fe --- 0.1 0.126 [0.472] 0.076 

Mn --- 37 *2 29.6 [30.5] 34.5 

Cu --- < 0.1 < 0.008 [<0.008] < 0.01 

Zn --- 1.2 *3 1.14 [1.13] 1.36 

Mo --- < 0.01 0.039 J [0.0406 J] < 0.02 

Cd --- 0.003 0.0027 J [0.0024 U] 0.0024 

Ag --- < 0.01 < 0.0061 [<0.0061] < 0.1 

Cr --- < 0.01 0.0047 J [0.0061] < 0.01 

Co --- 0.08 *4 0.0697 [0.0688] 0.089 

Ni --- 0.2 0.195 [0.196] 0.236 

Pb --- < 0.1 < 0.0019 UJ [0.0026 J] < 0.002 

Hg --- < 0.0005 < 0.0001 [<0.0001] < 0.0002 

Be --- < 0.01 0.0025 J [0.0035 J] < 0.004 

V --- < 0.01 < 0.002 [<0.002] < 0.01 

Se --- < 0.05 < 0.0025 UJ [<0.0025 UJ] < 0.005 

As --- < 0.01 < 0.0024 [<0.0024] < 0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

28.7 

28.8 

---

---

41.6 

3.77 

30.5 

27.7 

Charge imbalance (percent) -0.10 --- 167 9.86 

119
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 11/8/94 6/1/95 4/17/96 8/1/96 1/1/97 6/25/97 

Miscellaneous information SRK is the source filtered filtered filtered filtered ---

from MC DB 

Comments Accuracy of this data --- --- --- --- ---

NOT verified 

Source ID (see table 2) MC DB MMW wkst MMW wkst MMW wkst MMW wkst NMED: ACZ lab 

sheet, MC DB 

Lab ID (see table 2) ETC --- --- --- --- ACZ RG 46913 

Depth to Water (m) --- --- 9.76 --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- 10.2 --- 9.9 ---

pH, field, [lab] 4.9 6.51 6.91 6.86 6.76 ---

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- 2,570 # 2,400 2,340 2,160 [2,500] 

TDS (mg/L) 3,400 --- --- --- --- 2030, 2070 

Constituent, dissolved (mg/L) 

Ca --- --- --- 460 439 482 

Mg --- --- 157 # 101 # 5.33 53.1 

Ba --- --- < 0.1 0.03 0.038 0.032 

Na --- --- 110 110 106 115 

K --- --- --- 7 5.9 7 

SO4 --- 1,300 # 1,380 # 1,200 1,490 # 1,190 

Alkalinity (as HCO3) --- --- 233 --- --- 257 

F --- 3.21 2.9 --- 3.58 3 

Cl --- --- --- ND --- 3 

SiO2 --- --- --- 15 34 35.1 

Al --- 0.3 0.396 0.2 0.26 < 0.2 

Fe 50.8 1.1 < 0.05 0.083 0.46 < 0.02 

Mn 52.1 14.9 6.08 3.11 5.33 5.03 

Cu 0.088 0.02 0.009 < 0.01 < 0.01 < 0.1 

Zn 9.48 0.24 < 0.5 0.092 0.07 0.12 

Mo --- < 0.02 < 0.2 < 0.02 < 0.02 < 0.02 

Cd --- < 0.005 < 0.01 < 0.0005 < 0.0005 0.0005 

Ag --- --- < 0.01 < 0.01 < 0.0002 < 0.003 

Cr --- --- < 0.01 < 0.01 0.01 < 0.2 

Co --- --- < 0.01 < 0.01 < 0.01 < 0.02 

Ni --- --- < 0.02 < 0.02 0.02 < 0.02 

Pb --- < 0.1 < 0.005 --- < 0.001 < 0.001 

Hg --- --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be --- --- < 0.005 < 0.004 0.0011 < 0.004 

V --- --- < 0.01 < 0.01 < 0.005 < 0.01 

Se --- --- < 0.005 0.005 < 0.001 < 0.001 

As --- --- < 0.01 0.007 < 0.001 < 0.001 

Sum cations (meq/L) --- --- --- 28.3 19.7 26.1 

Sum anions (meq/L) --- --- --- 16.9 23.6 21.5 

Charge imbalance (percent) --- --- --- 50.4 -17.9 19.2 

120
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 11/7/97 6/9/98 6/9/98 2/4/00 6/6/01 

Miscellaneous information --- filtered filtered filtered filtered 

Comments curious Mg=Mn --- --- --- ---

and no Alk. 

Source ID (see table 2) MC DB, URS NMED: ACZ lab NMED: SLD lab MC DB, MMW wkst, MC CD 

3/01 sheet, MC DB sheet RGC 8/10 

Lab ID (see table 2) --- ACZ RG 70640 SLD WC-98 02500 Paragon Analytics Paragon Analytics 

Depth to Water (m) --- 10.2 10.2 9.86 ---

Water Elevation (ft) --- --- --- --- 7,669 

Field Temperature (o

C) 10.4 10.6 10.6 9.6 10.5 

pH, field, [lab] 6.91 6.7 6.7, [7.97] 6.21 6.74 

Eh (V) --- --- --- --- 0.278 

Spec Cond (PS/cm) field, [lab] --- 2,470 2,470 2,800 2,330 

TDS (mg/L) 2,130 2020, 2100 2,090 2,300 2,100 

Constituent, dissolved (mg/L) 

Ca 428 430 405 500 470 

Mg 49.1 52.7 47.1 63 56 

Ba 0.029 0.035 --- 0.026 0.026 

Na 99.3 107 95.6 91 97 

K 4.9 6.2 6.35 9.9 9.4 

SO4 1,250 1,270 1,230 1,300 1,300 

Alkalinity (as HCO3) 250 226 232 170 230 

F 2.9 3 --- 4.6 3.5 

Cl 5 5 < 10 5 4.9 

SiO2 15.2 16 --- 19.5 16.3 

Al 0.16 0.28 --- 1.4 1.7 

Fe 0.07 0.61 --- 0.22 0.63 

Mn 4.07 5.26 --- 13 6 

Cu < 0.02 < 0.01 --- 0.021 < 0.01 

Zn 0.07 0.17 --- 0.1 0.35 

Mo < 0.02 0.01 --- < 0.1 < 0.1 

Cd < 0.03 < 0.0005 --- 0.0069 0.002 

Ag < 0.01 < 0.0005 --- < 0.002 < 0.002 

Cr < 0.02 < 0.01 --- < 0.01 < 0.01 

Co < 0.02 0.01 --- 0.047 0.016 

Ni < 0.02 0.02 --- 0.091 0.031 

Pb < 0.08 < 0.001 --- < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 --- < 0.0002 < 0.0002 

Be < 0.02 < 0.002 --- < 0.004 < 0.004 

V < 0.01 < 0.005 --- < 0.01 < 0.01 

Se < 0.002 < 0.001 --- 0.011 < 0.005 

As < 0.001 < 0.001 --- 0.0069 < 0.005 

Sum cations (meq/L) 22.6 23.3 21.4 26.4 24.7 

Sum anions (meq/L) 23.0 22.9 22.4 21.6 22.9 

Charge imbalance (percent) -1.78 1.79 -4.61 19.8 7.54 

121
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon Valley 

Well ID MMW-3 MMW-3 MMW-3 MMW-3 MMW-3 

Sample Date 8/27/01 10/26/01 2/21/02 6/3/02 6/3/02 

Miscellaneous information filtered filtered filtered filtered + duplicate filtered 

Comments --- --- --- --- see EPA symbol key 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,669 7,668 7,669 7,668 7,668 

Field Temperature (o

C) 14.3 16.3 8.8 19.8 19.8 

pH, field, [lab] 6.81 6.67 6.79 6.82 6.82 

Eh (V) 0.141 0.078 0.061 0.091 0.091 

Spec Cond (PS/cm) field, [lab] 2,280 2,400 2,320 2,370 2,370 

TDS (mg/L) 2,100 2,100 2,100 2,100 2,100 

Constituent, dissolved (mg/L) 

Ca 460 470 470 490 490 

Mg 47 50 48 49 49 

Ba 0.026 0.027 0.025 0.026 0.025 

Na 94 100 110 110 100 

K 8.7 9 8.8 8.7 8.6 

SO4 1,300 1,300 1,300 1,300 1,300 

Alkalinity (as HCO3) 230 240 230 240 240 

F 3.3 3.2 4 2.5 2.5 

Cl 4.6 4.8 4.3 5.2 4.7 

SiO2 14.8 15.2 16.3 16.1 15.2 

Al < 0.05 < 0.05 < 0.05 0.019 < 0.05 

Fe < 0.1 0.19 0.27 < 0.1 < 0.1 

Mn 4.7 4.2 4 3.4 3.3 

Cu < 0.01 < 0.0005 0 0.0011 0.00083 

Zn 0.19 0.16 0.14 0.13 0.13 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.001 0.00077 < 0.001 0.00048 0.00038 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Co < 0.01 0.0088 0.0085 0.0074 0.007 

Ni < 0.02 0.018 0.015 0.015 0.014 

Pb < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 0.00059 0.0013 < 0.004 < 0.004 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.0059 < 0.005 < 0.005 0.0038 0.0039 

As < 0.005 0.003 < 0.005 0.0019 < 0.003 

Sum cations (meq/L) 23.2 24.0 24.7 24.9 24.5 

Sum anions (meq/L) 23.1 23.0 23.3 22.6 22.6 

Charge imbalance (percent) 0.74 4.30 5.87 9.87 8.15 

122
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon 

Well ID MMW-23A MMW-23A MMW-23A MMW-23A 

Sample Date 

Miscellaneous information 

1/18/00 

filtered 

6/12/01 

filtered 

9/19/01 

filtered 

4/11/02 

filtered 

Comments --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

MC DB, MMW wkst, 

RGC 8/10 

Paragon Analytics 

3.1 

6 

5.97 

2,250 

2,000 

---

---

MC CD 

Paragon Analytics 

8,764 

21.1 

5.51 

0.073 

1,820 # 

1,800 

---

MC CD 

Paragon Analytics 

8,766 

11.8 

4.5 

0.362 

3,330 

4,000 

---

MC CD 

Paragon Analytics 

13.4 

5.08 

0.012 

2,310 

2,300 

---

---

Constituent, dissolved (mg/L) 

Ca 490 460 480 390 

Mg 52 41 160 73 

Ba 0.013 0.014 0.013 0.014 

Na 52 55 32 40 

K 5.9 8.1 4.4 4.1 

SO4 1,300 1,200 2,700 1,500 

Alkalinity (as HCO3) 45 67 < 5 7 

F 20 8 46 37 

Cl 6.2 7.3 6.2 6 

SiO2 36.4 21 64 47 

Al 11 2.6 110 37 

Fe 2.8 0.37 2.4 0.5 

Mn 33 22 99 48 

Cu < 0.01 0.054 0.58 0.01 

Zn 4.5 2.9 18 8.2 

Mo < 0.1 < 0.1 < 0.1 0.043 

Cd 0.002 0.004 0.039 0.0024 

Ag < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 < 0.01 

Co 0.077 0.041 0.43 0.16 

Ni 0.22 0.13 1 0.48 

Pb < 0.012 < 0.009 0.03 0.016 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.17 0.06 0.28 0.14 

V < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.019 0.0087 0.037 0.022 

As < 0.005 0.008 0.08 0.13 

Sum cations (meq/L) 

Sum anions (meq/L) 

24.7 

19.9 

21.8 

18.4 

33.9 

37.5 

22.5 

22.6 

Charge imbalance (percent) 21.5 17.0 -10.2 -0.01 

123
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon 

Well ID MMW-23B MMW-23B MMW-23B MMW-23B 

Sample Date 

Miscellaneous information 

1/18/00 

filtered 

6/12/01 

filtered 

9/19/01 

filtered 

10/17/01 

filtered 

Comments --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB, MMW wkst, RGC 

8/10 

Paragon Analytics 

MC CD 

Paragon Analytics 

MC CD 

Paragon Analytics 

MC CD 

Paragon Analytics 

Depth to Water (m) 4.8 --- --- ---

Water Elevation (ft) --- 8,761 8,760 8,759

Field Temperature (o

C) 7.8 13.4 9.5 11.4

pH, field, [lab] 7.76 6.73 7.78 7.81

Eh (V) --- 0.098 0.138 0.049

Spec Cond (PS/cm) field, [lab] 811 743 764 783

TDS (mg/L) 500 470 480 460

Constituent, dissolved (mg/L) 

Ca 53 41 35 35 

Mg 8.6 7.3 6.6 5.9 

Ba 0.013 < 0.01 < 0.01 0.0068 

Na 98 110 120 120 

K 2.9 3.4 1.6 1.7 

SO4 250 230 240 240 

Alkalinity (as HCO3) 120 120 120 120 

F 3 2.9 2.8 2.5 

Cl 1.1 1.2 1.2 1 

SiO2 13.1 13 13 13 

Al 0.31 < 0.05 < 0.05 < 0.05 

Fe 0.13 < 0.1 < 0.1 < 0.1 

Mn 0.65 0.15 0.051 0.045 

Cu < 0.01 < 0.01 < 0.01 < 0.01 

Zn 0.14 0.023 < 0.02 < 0.02 

Mo < 0.1 < 0.1 < 0.1 < 0.1 

Cd < 0.001 < 0.001 < 0.001 < 0.001 

Ag < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 < 0.01 

Co < 0.01 < 0.01 < 0.01 < 0.01 

Ni < 0.02 < 0.02 < 0.02 0.00097 

Pb < 0.003 < 0.003 < 0.003 < 0.003 

Hg --- < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 < 0.004 < 0.004 < 0.004 

V < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 < 0.005 0.0029 

As < 0.005 < 0.005 < 0.005 0.0047 

Sum cations (meq/L) 

Sum anions (meq/L) 

7.18 

6.81 

7.09 

6.50 

7.16 

6.75 

7.11 

6.73 

Charge imbalance (percent) 5.20 8.58 5.86 5.40 

124
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin Canyon 

Well ID MMW-23B MMW-23B MMW-23B 

Sample Date 3/13/02 4/11/02 7/15/02 

Miscellaneous information filtered filtered filtered 

Comments --- --- ---

Source ID (see table 2) MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- ---

Water Elevation (ft) 8,761 8,761 ---

Field Temperature (o

C) 6 13 14.9 

pH, field, [lab] 7.42 7.9 8.09 

Eh (V) -0.025 0.124 0.018 

Spec Cond (PS/cm) field, [lab] 758 746 759 

TDS (mg/L) 490 480 490 

Constituent, dissolved (mg/L) 

Ca 34 35 37 

Mg 5.9 6.3 6.6 

Ba 0.0056 0.0058 0.0057 

Na 120 120 110 

K 1.8 1.9 2 

SO4 240 240 240 

Alkalinity (as HCO3) 120 120 110 

F 2.7 2.6 2.7 

Cl 1 < 1 0.94 

SiO2 13 13 12 

Al 0.0085 < 0.05 0.035 

Fe 0.029 < 0.1 0.028 

Mn 0.043 0.044 0.04 

Cu < 0.01 < 0.01 < 0.01 

Zn < 0.02 0.0039 0.00073 

Mo 0.029 < 0.1 < 0.1 

Cd < 0.001 < 0.001 0.00034 

Ag < 0.002 < 0.002 < 0.002 

Cr 0.0018 0.0011 0.0022 

Co < 0.01 < 0.01 0.0011 

Ni 0.0047 0.0026 0.0015 

Pb < 0.003 < 0.003 < 0.003 

Hg < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 < 0.004 0.00069 

V < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 < 0.005 

As < 0.005 < 0.005 0.0036 

Sum cations (meq/L) 

Sum anions (meq/L) 

7.09 

6.77 

7.13 

6.70 

6.79 

6.54 

Charge imbalance (percent) 4.58 6.29 3.89 

125
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Capulin, in old channel Capulin on River 

Well ID Well 3 Well 4 

Sample Date 

Miscellaneous information 

6/1/99 

J ="estimated values" (field duplicates 

inconsistent) 

6/1/99 

J ="estimated values" (field duplicates 

inconsistent) 

Comments see EPA symbol key see EPA symbol key 

Source ID (see table 2) EPA memo EPA memo 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

EPA Lab ID: SWOK 

---

---

---

---

---

---

---

EPA Lab ID: SWOK 

---

---

---

---

---

---

---

Constituent, dissolved (mg/L) 

Ca 205 239 

Mg 60.9 66.9 

Ba 0.0064 0.0174 

Na 27.4 27.1 

K 3.98 4.76 

SO4 --- ---

Alkalinity (as HCO3) --- ---

F --- ---

Cl --- ---

SiO2 --- ---

Al 112 141 

Fe 18.6 J 2.67 J 

Mn 18.7 18.8 

Cu 1.08 1.21 

Zn 4.61 4.85 

Mo --- ---

Cd 0.0198 0.0201 

Ag < 0.001 < 0.001 

Cr 0.0015 J 0.0031 J 

Co 0.214 0.242 

Ni 0.435 0.483 

Pb 0.0029 J 0.0063 J 

Hg 0.00031 Jb < 0.0001 

Be 0.0239 0.0254 

V < 0.001 < 0.001 

Se < 0.003 < 0.003 

As < 0.003 0.0041 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

Charge imbalance (percent) --- ---

126
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Goat Hill Gulch along Access Road 

Well ID MMW-42A MMW-42A MMW-42A MMW-42A MMW-42A MMW-42A 

Sample Date 6/14/01 9/8/01 11/11/01 2/20/02 5/28/02 8/6/02 

Miscellaneous information SC potentially factor filtered filtered filtered filtered ---

of 100 low 

Comments Fe, Cl, and Na --- --- --- --- ---

drastically different 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 7,647 7,643 7,641 7,642 7,643 ---

Field Temperature (o

C) 10.5 17.8 13 11.6 15.9 14.4 

pH, field, [lab] 3.65 3.49 3.45 3.41 3.4 3.33 

Eh (V) 0.207 0.48 0.497 0.481 0.509 0.455 

Spec Cond (PS/cm) field, [lab] 230 2,720 2,890 2,650 2,740 2,590 

TDS (mg/L) 2,400 2,800 2,600 2,500 2,500 ---

Constituent, dissolved (mg/L) 

Ca 230 220 220 230 200 ---

Mg 69 76 75 74 63 ---

Ba < 0.01 < 0.01 0.0017 < 0.01 0.0012 ---

Na 33 67 80 74 68 ---

K 3.1 2.8 3.4 3.2 2.8 ---

SO4 1,600 1,700 1,600 1,600 1,700 ---

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 ---

F 16 22 22 19 20 ---

Cl 76 260 350 310 300 ---

SiO2 64 86 90 94 88 ---

Al 130 190 180 170 160 ---

Fe 18 1.1 0.92 0.78 0.75 ---

Mn 19 26 27 26 24 ---

Cu 2 3.1 3.4 3.3 3.2 ---

Zn 4.7 6.7 6.9 7.2 5.9 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.023 0.035 0.034 0.034 0.03 ---

Ag < 0.002 < 0.002 0.0017 < 0.002 < 0.002 ---

Cr 0.012 0.027 0.036 0.035 0.031 ---

Co 0.23 0.32 0.31 0.3 0.27 ---

Ni 0.45 0.67 0.65 0.64 0.59 ---

Pb < 0.006 < 0.009 < 0.009 < 0.009 < 0.009 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.023 0.035 0.037 0.036 0.034 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.011 0.018 0.013 0.013 0.0059 ---

As < 0.005 < 0.005 < 0.005 0.0022 0.0028 ---

Sum cations (meq/L) 22.0 26.9 27.7 27.1 23.4 ---

Sum anions (meq/L) 23.2 27.6 29.4 28.5 30.5 ---

Charge imbalance (percent) -5.62 -2.63 -5.99 -4.93 -26.4 ---

127
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft 

Well ID MMW-7 MMW-7 MMW-7 MMW-7 

Sample Date 11/7/94 11/7/94 11/7/94 11/7/94 

Miscellaneous information filtered filtered; duplicate filtered filtered; below demonstrates inconsistency of NMED in 

value selection 

Comments --- lab sheet not --- *1 Mn 67 SLD results/ 69 SLD remarks & Slifer, *2 Zn 

supplied to USGS 9.7 SLD results & Slifer / 9.6 SLD remarks, *3 Co =4.2 

SLD results/ 4.3 SLD remarks & Slifer 

Source ID (see table 2) SPRI 1995 Slifer 1996 SPRI 1995, SRK Slifer 1996 

1995, MC DB, 

Lab ID (see table 2) ETC SLD 940640 ETC SLD IC 940641 

Depth to Water (m) 18.6 18.62 18.6 18.6 

Water Elevation (ft) --- --- --- ---

Field Temperature (o

C) 17.2 17.2 17.2 17.2 

pH, field, [lab] 4.4 4.4 4.4 4.4 

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] 9,490 7,100 9,490 7,100 

TDS (mg/L) 16,000 16500 # 16,000 15300 # 

Constituent, dissolved (mg/L) 

Ca 534 540 544 550 

Mg 1230 1150 1250 1290 

Ba 0.074 < 0.1 0.108 0.1 

Na 178 --- 175 ---

K 12.1 --- 12 ---

SO4 10,500 9,070 # 10,400 9,370 # 

Alkalinity (as HCO3) < 1 --- < 1 ---

F 0.98 --- 1.12 ---

Cl 21 --- 21 ---

SiO2 48 32 43 41 

Al 961 890 943 950 

Fe 375 380 384 420 

Mn 73.3 72 72.1 67 *1 

Cu 5.04 4.5 4.84 4.5 

Zn 11.9 9.8 11.7 9.6 *2 

Mo < 0.1 < 0.1 < 0.10 < 0.1 

Cd 0.092 0.11 0.096 0.11 

Ag < 0.5 < 0.1 < 0.5 < 0.1 

Cr 0.17 0.2 0.193 0.2 

Co 4.99 3.9 4.91 4.2 *3 

Ni 10.7 8.6 10.5 9.5 

Pb 0.06 0.8 0.1 1 

Hg < 0.0002 < 0.0005 < 0.0002 < 0.0005 

Be 0.122 0.1 0.104 0.1 

V 0.106 0.1 0.104 < 1.0 

Se < 0.025 < 0.025 < 0.05 ---

As < 0.05 < 0.1 < 0.05 0.1 

Sum cations (meq/L) 

Sum anions (meq/L) 

135 

93.8 

127 

77.5 

136 

92.7 

141 

77.4 

Charge imbalance (percent) 35.9 48.2 38.0 58.0 

128
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft 

Well ID MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 

Sample Date 11/7/94 6/1/95 4/17/96 8/1/96 1/1/97 6/25/97 

Miscellaneous information filtered filtered filtered filtered filtered ---

Comments *1 Al dissolved > Al --- --- --- --- ---

total, *2 Se Rejected 

Source ID (see table 2) WC 96 MMW wkst MMW wkst MMW wkst MMW wkst NMED: ACZ lab 

sheet, MC DB 

Lab ID (see table 2) ETC --- --- --- --- ACZ RG 46914 

Depth to Water (m) 18.6 --- 18.7 --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) 12.8 --- 11.4 --- 11.7 ---

pH, field, [lab] 5.2 3.9 4.24 4.12 4.13 ---

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 8,860 8,410 9,330 9,150 7,990 [7,900] 

TDS (mg/L) 19,400 --- 16,400 # --- --- 13400, 13800 

Constituent, dissolved (mg/L) 

Ca 532 [535] --- --- 470 490 530 

Mg 1200 [1190] --- 1,470 # 1080 # 1040 815 

Ba 0.113 J [0.111 J] --- < 0.1 0.09 0.09 0.04 

Na 159 --- 140 150 132 137 

K 103 [101] --- --- 15 11 20 

SO4 10100 J 8,930 # 8,630 # 8,200 # 8,250 # 10,600 

Alkalinity (as HCO3) < 5 --- < 1 --- --- < 2 

F --- 0.849 0.88 1.02 1.02 160 

Cl 21 --- --- 18 --- 15 

SiO2 --- --- --- 60 137 118 

Al 954 *1 [945] 490 953 890 814 735 

Fe 399 [394] 0.422 326 355.4 344 259 

Mn 68.2 [67.5] 57.2 59.5 31.8 57.3 46.9 

Cu 4.91 [4.94] 2.1 1.91 1.64 1.72 1.6 

Zn 10.8 [11.4] 9 9.11 8.79 9.34 7.8 

Mo < 0.002 [0.0272 J] < 0.02 < 0.02 < 0.02 < 0.02 < 0.1 

Cd 0.0825 [0.0834] 0.084 0.118 0.0039 0.1 0.08 

Ag < 0.0061 [<0.0061] --- < 0.01 < 0.01 < 0.001 < 0.005 

Cr 0.17 [0.168] --- 0.18 0.17 0.18 0.1 

Co 4.63 [4.64] --- 3.8 3.9 4.1 3.4 

Ni 10.7 [10.8] --- 8.5 8.5 8.9 7.5 

Pb 0.0103 J [0.0082 J] < 0.10 < 0.005 0.022 0.022 0.014 

Hg < 0.0001 [<0.0001] --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.107 [0.105] --- 0.11 0.11 0.1 0.08 

V 0.137 [0.135] --- 0.21 0.21 0.19 0.13 

Se *2 --- < 0.025 0.027 < 0.001 < 0.001 

As 0.0168 J [<0.012] --- 0.02 < 0.025 < 0.05 < 0.03 

Sum cations (meq/L) 140 --- --- 135 125 93.2 

Sum anions (meq/L) 93.1 --- --- 72.9 74.7 130 

Charge imbalance (percent) 40.3 --- --- 59.8 50.5 -32.8 

129
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft Facilities 

Well ID MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 

Sample Date 

Miscellaneous information 

11/7/97 

---

5/11/98 

Could be 11/5/98 

6/9/98 

filtered 

6/9/98 

filtered 

2/7/00 

filtered 

Comments --- --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

MC DB, URS 3/01 

12.2 

[6.98] 

12,800 

---

---

---

---

---

MC DB 

10,900 

---

---

---

---

---

---

---

NMED, MC DB 

ACZ RG70641 

18.7 

12.2 

4.13 

7,920 

10300, 11100 

---

---

NMED: SLD lab sheet 

SLD WC-98 02502 

18.7 

12.2 

4.13 

7,920 

10,600 

---

---

MC DB, MMW wkst, 

RGC 8/10 

Paragon Analytics 

18.7 

11.3 

4.15 

7,130 

12,000 

---

---

Constituent, dissolved (mg/L) 

Ca 506 489 453 506 450 

Mg 863 791 757 812 680 

Ba 0.06 --- 0.051 --- 0.035 

Na 125 138 130 131 120 

K 8 10 9.8 13 14 

SO4 8,270 7,200 7,940 7,810 7,500 

Alkalinity (as HCO3) < 2 ND < 2 --- 52 

F 1.1 130 140 --- 150 

Cl 17 9 11 155 22 

SiO2 54 --- 40 --- 41 

Al 664 592 589 --- 530 

Fe 305 279 247 --- 260 

Mn 48.9 39.4 39.5 --- 41 

Cu 1 0.7 0.75 --- 3.5 

Zn 8.3 6.7 6.29 --- 6.2 

Mo 0.2 ND < 0.01 --- < 0.1 

Cd 0.1 0.06 0.07 --- 0.077 

Ag < 0.05 --- 0.0007 --- 0.0025 

Cr < 0.1 --- 0.08 --- 0.08 

Co 3.5 3.1 2.77 --- 2.6 

Ni 7.4 6.7 5.92 --- 5.8 

Pb < 0.04 --- 0.012 --- 0.015 

Hg < 0.0002 --- < 0.0002 --- ---

Be 0.1 --- 0.074 --- 0.072 

V 0.13 --- 0.13 --- 0.11 

Se < 0.002 --- < 0.001 --- < 0.025 

As 0.02 --- < 0.005 --- 0.0082 

Sum cations (meq/L) 100 96.8 88.0 94.2 82.1 

Sum anions (meq/L) 83.4 80.0 93.9 94.1 93.4 

Charge imbalance (percent) 18.2 19.0 -6.52 0.10 -12.9 

130
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft Facilities 

Well ID MMW-7 MMW-7 MMW-7 MMW-7 MMW-7 

Sample Date 

Miscellaneous information 

6/23/01 

filtered 

8/28/01 

filtered 

11/10/01 

filtered 

2/16/02 

filtered 

5/30/02 

filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

Paragon Analytics 

8,029 

12.7 

4.15 

0.356 

6,720 

9,700 

---

Paragon Analytics 

8,030 

15.7 

4.16 

0.215 

6,500 

9,800 

---

Paragon Analytics 

8,029 

14.9 

4.16 

0.197 

6,720 

9,400 

---

Paragon 

8,029 

3.8 

4.29 

0.187 

6,730 

9,700 

---

Paragon 

8,029 

12.8 

4.07 

0.21 

6,790 

9,700 

---

Constituent, dissolved (mg/L) 

Ca 500 490 500 500 460 

Mg 680 640 660 680 620 

Ba 0.03 0.05 0.07 0.031 0.03 

Na 120 120 120 130 130 

K 14 14 14 14 14 

SO4 7,000 7,800 7,000 7,300 7,700 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 140 130 130 130 130 

Cl 14 17 22 25 15 

SiO2 41 39 36 39 39 

Al 470 480 470 430 440 

Fe 260 250 250 260 250 

Mn 38 34 37 35 33 

Cu 1.1 1.1 1.2 0.89 0.93 

Zn 5.6 5 5.3 4.9 4.8 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.06 0.05 0.05 0.059 0.059 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr 0.07 0.07 0.07 0.067 0.068 

Co 2.4 2.3 2.3 2.2 2.1 

Ni 5.3 5 5.1 4.8 4.9 

Pb < 0.01 < 0.01 < 0.01 0.015 0.0095 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.06 0.06 0.05 0.058 0.059 

V 0.12 0.12 0.12 0.11 0.12 

Se < 0.02 < 0.02 < 0.01 0.0099 < 0.025 

As 0.01 0.01 0.01 0.0092 0.0091 

Sum cations (meq/L) 81.4 74.3 78.9 81.9 71.8 

Sum anions (meq/L) 85.0 97.5 84.3 95.8 100 

Charge imbalance (percent) -4.32 -27.0 -6.58 -15.7 -32.9 

131
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A 

Sample Date 11/8/94 11/8/94 11/8/94 6/1/95 4/17/96 

Miscellaneous information filtered filtered, estimated filtered filtered filtered 

values 

Comments --- --- *1Mn= 0.23 SLD --- ---

results & Slifer / 0.21 

SLD remarks, *2 Ni < 

Source ID (see table 2) Slifer 1996 SPRI 1995, SRK Slifer 1996 MMW wkst MMW wkst 

1995, MC DB, MMW 

Lab ID (see table 2) SLD WC 94-6419 ETC SLD IC-94-0650 --- ---

Depth to Water (m) 29.5 29.5 29.5 --- 29.4 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 8.4 8.4 8.4 --- 12.2 

pH, field, [lab] [5.99] 7 6, [5.99] 6.56 7.25 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,326 2,860 1,330 # 1090 # 1,770 

TDS (mg/L) 1,280 # 2,200 1,280 # --- ---

Constituent, dissolved (mg/L) 

Ca 184 # 466 230 --- ---

Mg 54.7 85.6 64 --- 146 # 

Ba --- 0.103 < 0.1 --- < 0.01 

Na 33 41.5 --- --- 36 

K 5 3.8 --- --- ---

SO4 716 1,300 --- 528 1,030 # 

Alkalinity (as HCO3) 10 165 --- --- 87 

F 1.9 2.72 --- 2.76 2.8 

Cl < 5 8.7 --- --- ---

SiO2 --- 24 41 --- ---

Al --- < 0.05 0.43 0.3 0.27 

Fe --- 2.84 < 0.1 1 < 0.5 

Mn --- 7.15 0.21 *1 0.85 3.19 

Cu --- < 0.010 < 0.01 < 0.010 0.009 

Zn --- < 0.05 0.2 0.03 < 0.5 

Mo --- < 0.02 < 0.001 < 0.02 < 0.02 

Cd --- 0.002 < 0.005 < 0.0005 0.01 

Ag --- < 0.1 < 0.001 --- < 0.01 

Cr --- < 0.01 < 0.005 --- < 0.01 

Co --- < 0.01 0.003 --- < 0.01 

Ni --- < 0.02 0.06 *2 --- < 0.02 

Pb --- < 0.002 < 0.001 < 0.1 < 0.005 

Hg --- < 0.0002 < 0.005 --- < 0.0002 

Be --- < 0.004 < 0.001 --- < 0.005 

V --- < 0.01 < 0.005 --- < 0.01 

Se --- < 0.005 0.025 --- < 0.005 

As --- < 0.005 < 0.001 --- < 0.01 

Sum cations (meq/L) 12.0 24.1 --- --- ---

Sum anions (meq/L) 11.9 21.7 --- --- ---

Charge imbalance (percent) 0.82 10.5 --- --- ---

132
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A 

Sample Date 8/1/96 1/1/97 6/25/97 11/7/97 5/11/98 6/9/98 

Miscellaneous information filtered filtered --- --- --- 9/6/98 in MCDB 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst MMW wkst NMED:ACZ lab MC DB, URS MC DB NMED: ACZ lab 

sheet, MC DB 3/01 sheet, MC DB 

Lab ID (see table 2) --- --- ACZ RG 46915 --- --- ACZ RG 70642 

Depth to Water (m) --- --- --- --- --- 29.2 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- 11.1 --- 11.2 --- 11.7 

pH, field, [lab] 7.08 6.87 --- 6.94 --- 6.84 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 2,480 2,250 [2,400] --- --- 2,580 

TDS (mg/L) --- --- 2290, 2400 2,400 2,470 2190, 2330 

Constituent, dissolved (mg/L) 

Ca 450 469 539 484 500 475 

Mg 155 # 99.6 101 92 105 91.7 

Ba 0.04 0.042 0.041 0.037 --- 0.036 

Na 44 35.6 40 34.8 42 38.3 

K 5.4 4 5 3.6 4.3 4.1 

SO4 1,600 1,550 1,450 1,420 1,580 1,490 

Alkalinity (as HCO3) --- --- 186 143 151 137 

F --- 2.4 3 2.6 2.3 2 

Cl 5 --- 5 7 8 7 

SiO2 28 63 65 28 --- 29 

Al 0.1 0.09 < 0.06 < 0.06 ND 0.06 

Fe 0.725 1.1 1.1 0.44 0.82 0.4 

Mn 2.43 4.37 4.46 3.83 3.97 3.91 

Cu 0.01 < 0.01 < 0.1 < 0.02 0.01 < 0.01 

Zn < 0.05 0.01 < 0.10 1.1 ND < 0.01 

Mo < 0.02 < 0.02 < 0.02 < 0.02 ND 0.02 

Cd < 0.0005 < 0.0005 < 0.0005 < 0.006 ND < 0.0005 

Ag < 0.01 < 0.0002 < 0.003 0.01 --- < 0.0005 

Cr < 0.01 < 0.01 < 0.02 < 0.02 --- < 0.01 

Co < 0.01 0.01 < 0.02 < 0.02 ND < 0.01 

Ni < 0.02 < 0.01 < 0.02 < 0.02 ND < 0.01 

Pb --- < 0.001 < 0.001 < 0.08 --- < 0.001 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 --- < 0.0002 

Be < 0.004 < 0.0005 < 0.004 < 0.02 --- < 0.002 

V < 0.01 < 0.005 < 0.01 < 0.01 --- < 0.005 

Se < 0.005 < 0.001 < 0.001 < 0.003 --- < 0.001 

As < 0.005 < 0.001 < 0.005 < 0.001 --- < 0.001 

Sum cations (meq/L) 26.7 23.6 27.2 24.1 25.3 23.6 

Sum anions (meq/L) 22.7 22.5 23.5 22.9 25.3 24.0 

Charge imbalance (percent) 15.9 4.59 14.8 5.42 -0.07 -1.65 

133
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A MMW-8A 

Sample Date 2/4/00 6/12/01 8/23/01 11/11/01 2/20/02 5/28/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC DB, MMW wkst, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) 29.1 --- --- --- --- ---

Water Elevation (ft) --- 7,759 7,762 7,761 7,762 7,763 

Field Temperature (o

C) 10.5 26.7 19.7 17.6 13.3 18.2 

pH, field, [lab] 6.49 7.24 6.92 6.92 6.94 6.89 

Eh (V) --- 0.099 0.01 -0.092 -0.035 -0.025 

Spec Cond (PS/cm) field, [lab] 2,350 2,220 2,450 2,530 2,470 2,550 

TDS (mg/L) 2,200 2,500 2,500 2,500 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 440 570 560 560 540 510 

Mg 93 97 92 96 100 94 

Ba 0.029 0.03 0.04 0.04 0.033 0.032 

Na 44 40 41 38 39 40 

K 6.7 5.9 5.4 5.9 6 5.5 

SO4 1,300 1,600 1,500 1,600 1,600 1,600 

Alkalinity (as HCO3) 150 160 160 160 150 150 

F 2.7 2.1 1.8 1.3 2.6 2.5 

Cl 5 6.9 7.2 7 6.2 6.4 

SiO2 28 28 28 26 28 28 

Al 0.17 0.12 < 0.05 < 0.05 < 0.05 0.05 

Fe < 0.1 1.3 1 1.1 0.79 0.71 

Mn 2.2 4.6 4.6 4.6 3.6 3.3 

Cu < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Zn < 0.02 < 0.02 < 0.02 0.01 < 0.02 < 0.02 

Mo < 0.1 < 0.02 < 0.1 < 0.1 < 0.1 < 0.1 

Cd < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.03 < 0.01 < 0.01 0.00054 

Co < 0.01 < 0.01 < 0.01 0.0068 0.0035 0.0039 

Ni < 0.02 < 0.02 < 0.02 0.0073 0.0047 0.0042 

Pb < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 < 0.005 0.0051 0.0036 < 0.005 

As < 0.005 < 0.005 < 0.005 < 0.005 0.0026 0.0038 

Sum cations (meq/L) 23.4 26.3 26.6 26.4 26.2 24.3 

Sum anions (meq/L) 21.4 24.0 23.1 24.8 25.1 25.1 

Charge imbalance (percent) 8.88 9.10 14.1 6.46 4.29 -3.55 

134
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B 

Sample Date 11/8/94 11/8/94 11/8/94 6/1/95 4/17/96 

Miscellaneous information filtered filtered, estimated filtered filtered filtered 

values 

Comments --- --- *1 Fe=3 SLD results/ --- ---

2.3 SLD remarks & 

Slifer, *2 Cd < 0.1 

Source ID (see table 2) SPRI '95, SRK '95, Slifer 1996 Slifer 1996 MMW wkst MMW wkst 

MC DB, MMW wkst 

Lab ID (see table 2) ETC SLD WC 94-6431 SLD IC-94-0662 --- ---

Depth to Water (m) 29.3 29.3 29.3 --- 29.1 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 7.1 --- --- --- 11.6 

pH, field, [lab] 6.4 [8.07] 8.1 5.44 5.94 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,780 2,280 # 2,280 # 1,260 1,470 

TDS (mg/L) 1,100 2,290 2,290 # --- 1,810 # 

Constituent, dissolved (mg/L) 

Ca 206 407 580 --- ---

Mg 55.5 103 # 110 --- 110 

Ba 0.016 --- 0.1 --- < 0.01 

Na 33.9 41 --- --- 40 

K 2.9 7 --- --- ---

SO4 730 1,280 # --- 724 958 

Alkalinity (as HCO3) 19 154 --- --- 12 

F 1.83 2.6 --- 1.9 1.7 

Cl 5.6 5 --- --- ---

SiO2 37 --- 28 --- ---

Al 0.44 --- 0.2 0.3 0.57 

Fe < 0.050 --- 2.3 *1 0.9 < 0.5 

Mn 0.202 --- 7.8 0.096 < 0.5 

Cu < 0.01 --- < 0.02 < 0.010 0.005 

Zn 0.211 --- < 0.02 0.2 < 0.5 

Mo < 0.02 0.01 0.01 < 0.02 < 0.02 

Cd < 0.0005 --- < 0.002 *2 0.01 0.01 

Ag < 0.1 --- < 0.002 --- < 0.01 

Cr --- --- < 0.1 --- < 0.01 

Co < 0.01 --- 0.003 --- < 0.01 

Ni 0.059 --- < 0.02 *3 --- 0.06 

Pb < 0.002 --- < 0.002 < 0.1 < 0.005 

Hg < 0.0002 --- < 0.0005 --- < 0.0002 

Be < 0.004 --- < 0.002 --- < 0.005 

V < 0.01 --- < 0.002 --- < 0.01 

Se < 0.005 --- < 0.025 --- < 0.005 

As < 0.005 --- 0.003 --- < 0.01 

Sum cations (meq/L) 13.0 23.1 --- --- ---

Sum anions (meq/L) 12.3 21.3 --- --- ---

Charge imbalance (percent) 5.52 8.11 --- --- ---

135
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B 

Sample Date 8/1/96 1/1/97 6/25/97 11/7/97 5/11/98 6/9/98 

Miscellaneous information filtered; Mg reported filtered --- --- Could be ---

as 516.5 but 11/5/98 

changed to 51.65 

Comments Cation sum was 50.2 --- --- --- --- ---

before Mg changed 

Source ID (see table 2) MMW wkst MMW wkst NMED: ACZ lab MC DB, URS MC DB, URS NMED, MC 

sheet, MC DB 3/01 3/01 DB 

Lab ID (see table 2) --- --- ACZ RG 46916 --- --- ACZ RG 

Depth to Water (m) --- --- --- --- --- 29 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- 11 --- 11.5 --- 12 

pH, field, [lab] 5.87 6.84 --- 6.01 --- 5.63 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,510 # 1,460 # [1,700] 1,700 --- 1,850 

TDS (mg/L) --- --- 1370, 1450 1,520 1,760 1360, 1520 

Constituent, dissolved (mg/L) 

Ca 260 236 259 251 286 264 

Mg 51.7 # 68.1 71.4 66.6 87 71.8 

Ba 0.01 0.019 0.008 0.009 --- 0.011 

Na 51 46.9 59.3 59.3 69.5 56.1 

K 3.9 3.1 3 3 3.8 3.2 

SO4 820 1,090 # 910 950 1,130 940 

Alkalinity (as HCO3) --- --- 17 16 11 6 

F --- 1.79 1.6 1.6 1.6 1.7 

Cl 11 --- 17 18 26 21 

SiO2 36 85 86 19 --- 38 

Al 0.3 0.49 0.38 0.65 0.51 0.48 

Fe < 0.05 0.01 0.01 0.04 0.01 0.02 

Mn 0.033 0.034 0.027 0.052 0.024 0.021 

Cu < 0.01 < 0.01 < 0.05 < 0.01 ND < 0.01 

Zn 0.203 0.32 0.32 0.017 0.38 0.32 

Mo < 0.02 < 0.02 < 0.01 < 0.01 ND < 0.01 

Cd < 0.0005 0.0029 0.0029 0.003 0.0037 0.0026 

Ag < 0.01 < 0.0002 < 0.0003 < 0.005 --- < 0.0005 

Cr < 0.01 0.01 < 0.01 < 0.01 --- < 0.01 

Co < 0.01 0.01 < 0.01 0.01 ND < 0.01 

Ni 0.06 0.07 0.07 0.06 0.08 0.07 

Pb --- < 0.001 < 0.001 < 0.04 --- < 0.001 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 --- < 0.0002 

Be < 0.004 < 0.0005 < 0.002 < 0.01 --- < 0.002 

V < 0.01 < 0.005 < 0.005 < 0.005 --- < 0.005 

Se 0.005 0.004 0.004 0.003 --- 0.003 

As < 0.005 < 0.001 < 0.005 < 0.001 --- < 0.001 

Sum cations (meq/L) 15.3 14.3 16.6 15.8 18.4 16.5 

Sum anions (meq/L) 13.1 17.5 14.9 15.7 18.3 15.2 

Charge imbalance (percent) 15.6 -20.3 10.9 0.68 0.53 8.34 

136
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West "East of Sewage Pond" 

Well ID MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B MMW-8B 

Sample Date 2/4/00 6/12/01 8/24/01 11/11/01 2/20/02 5/28/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC DB, MMW wkst, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) 29.1 --- --- --- --- ---

Water Elevation (ft) --- 7,765 7,764 7,763 7,763 7,764 

Field Temperature (o

C) 10.2 19.8 17.9 14.2 13.4 21.1 

pH, field, [lab] 5.66 6.49 5.71 5.52 5.64 5.46 

Eh (V) --- 0.036 0.237 0.113 0.196 0.211 

Spec Cond (PS/cm) field, [lab] 2,360 2,290 2,460 2,530 2,500 2,760 

TDS (mg/L) 2,200 2,600 2,500 2,400 2,400 2,600 

Constituent, dissolved (mg/L) 

Ca 400 470 420 450 470 450 

Mg 110 150 140 130 130 120 

Ba < 0.01 < 0.01 0.03 0.0089 < 0.01 0.0092 

Na 95 110 98 89 98 110 

K 6.9 11 7.9 6.7 6.8 6.6 

SO4 1,400 1,700 1,600 1,600 1,600 1,800 

Alkalinity (as HCO3) 27 16 15 12 10 13 

F 1.7 7.6 5 1.6 2 1.9 

Cl 27 31 34 31 31 28 

SiO2 39 41 39 36 41 39 

Al 1.9 4.6 2.1 0.46 0.42 0.5 

Fe < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 0.039 

Mn 0.66 4.4 1.8 < 0.01 0.013 0.028 

Cu 0.018 0.03 0.03 0.0009 < 0.01 0.0015 

Zn 0.65 2.7 1.6 0.55 0.58 0.53 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.0057 0.02 0.01 0.0052 0.0043 0.0051 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 < 0.01 0.003 0.0025 

Co < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 0.00082 

Ni 0.12 0.81 0.4 0.12 0.12 0.12 

Pb < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.00092 0.0074 0.01 0.007 0.009 0.0058 

As < 0.005 < 0.005 < 0.005 0.0033 0.0035 0.0029 

Sum cations (meq/L) 24.9 29.2 26.4 26.7 28.0 25.6 

Sum anions (meq/L) 21.8 24.5 23.9 23.9 23.8 26.8 

Charge imbalance (percent) 13.5 17.4 10.1 11.1 16.3 -4.6 

137
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft Facilities 

Well ID MMW-21 MMW-21 MMW-21 MMW-21 MMW-21 MMW-21 

Sample Date 1/14/00 6/23/01 8/28/01 11/10/01 2/16/02 5/30/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered 

Comments *1 Zn=4.5 in RGC --- --- --- --- ---

8/10, *2 Cr =0.038 in 

RGC 8/10 

Source ID (see table 2) MC DB, MMW wkst, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) 23.2 --- --- --- --- ---

Water Elevation (ft) --- 8,018 8,020 8,020 --- ---

Field Temperature (o

C) 10.9 14.6 17.7 16.3 12.5 18.9 

pH, field, [lab] 3.25 2.85 3 2.96 2.89 2.89 

Eh (V) --- 0.354 0.527 0.527 0.525 0.521 

Spec Cond (PS/cm) field, [lab] 3,970 3,810 3,870 4,130 4,090 4,040 

TDS (mg/L) 4,700 4,500 4,300 4,100 4,500 4,500 

Constituent, dissolved (mg/L) 

Ca 460 390 380 450 420 400 

Mg 260 220 220 260 230 210 

Ba 0.013 < 0.01 < 0.01 < 0.01 0.00088 0.00035 

Na 63 55 54 53 60 58 

K 1.8 < 0.5 < 0.5 1.3 0.52 < 0.53 

SO4 3,200 3,300 3,200 3,400 3,500 3,900 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 < 5 

F 42 38 38 38 36 36 

Cl 36 37 33 36 36 34 

SiO2 94 98 98 98 105 105 

Al 200 200 200 200 180 180 

Fe 9.6 12 13 15 13 13 

Mn 21 22 20 23 23 21 

Cu 3.2 2.7 2.8 2.6 2.5 2.4 

Zn 4.8 *1 4 3.5 4.2 4 3.6 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.039 0.03 0.02 0.03 0.033 0.03 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr 0.036 *2 0.03 0.07 0.05 0.046 0.047 

Co 0.72 0.66 0.66 0.66 0.63 0.57 

Ni 1.4 1.2 1.3 1.3 1.2 1.1 

Pb < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.035 0.029 0.032 0.031 0.03 0.029 

V < 0.01 < 0.01 < 0.01 < 0.01 0.00096 < 0.01 

Se 0.014 0.009 < 0.01 < 0.01 0.012 0.0088 

As 0.0064 < 0.005 < 0.005 0.003 0.004 0.0021 

Sum cations (meq/L) 43.4 38.2 37.0 41.8 38.4 34.1 

Sum anions (meq/L) 41.4 43.5 41.5 43.3 47.5 54.1 

Charge imbalance (percent) 4.75 -12.9 -11.4 -3.58 -21.2 -45.3 

138
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West Mine Shaft Facilities 

Well ID MMW-22 MMW-22 MMW-22 MMW-22 MMW-22 MMW-22 

Sample Date 1/17/00 6/23/01 8/28/01 11/10/01 2/16/02 5/30/02 

Miscellaneous information filtered; *1 Na filtered filtered filtered filtered filtered 

reported 61 and 81 

Comments *1 61 chosen by --- --- --- --- ---

comparison of CI 

results 

Source ID (see table 2) MC DB, MMW MC CD MC CD MC CD MC CD MC CD 

wkst, RGC 8/10 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) 26.4 --- --- --- --- ---

Water Elevation (ft) --- 8,005 8,004 8,004 --- ---

Field Temperature (o

C) 11.9 12.8 20 15.5 10.2 20.1 

pH, field, [lab] 3.49 3.3 3.45 3.45 3.35 3.33 

Eh (V) --- 0.147 0.326 0.276 0.362 0.355 

Spec Cond (PS/cm) field, [lab] 3,890 4,190 3,650 3,880 3,870 3,800 

TDS (mg/L) 4,500 4,500 4,400 4,600 4,800 4,800 

Constituent, dissolved (mg/L) 

Ca 400 400 390 440 410 380 

Mg 220 190 180 220 200 180 

Ba < 0.01 < 0.01 < 0.01 0.0016 0.0015 0.0012 

Na 61 *1 52 50 52 54 55 

K 6.7 7.3 6.5 7.7 7.2 6.5 

SO4 3,000 3,200 3,200 3,300 3,700 3,900 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 < 5 

F 36 39 36 36 37 37 

Cl 31 35 37 39 35 34 

SiO2 88 96 88 92 92 92 

Al 200 190 190 200 190 180 

Fe 180 160 180 180 190 170 

Mn 15 15 14 16 16 15 

Cu 1.2 1.2 1.2 1.2 1.2 1.1 

Zn 3.8 3.6 3.2 3.8 3.5 3.1 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.026 0.02 0.02 0.02 0.025 0.027 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr 0.011 < 0.01 < 0.01 < 0.01 0.019 0.015 

Co 0.75 0.63 0.62 0.65 0.64 0.56 

Ni 1.4 1.1 1.1 1.1 1.1 1 

Pb < 0.006 0.01 < 0.006 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.033 0.03 0.03 0.03 0.032 0.03 

V < 0.01 < 0.01 < 0.01 0.0065 0.0055 0.0064 

Se 0.016 < 0.005 0.009 0.0064 0.012 0.0094 

As < 0.005 < 0.005 < 0.005 < 0.005 0.0023 < 0.005 

Sum cations (meq/L) 43.7 39.4 37.5 43.0 39.8 34.2 

Sum anions (meq/L) 38.0 42.5 41.5 42.0 50.8 54.2 

Charge imbalance (percent) 14.0 -7.47 -10.1 2.31 -24.2 -45.2 

139
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack West 

Well ID MMW-36B MMW-36B MMW-36B MMW-36B MMW-36B MMW-36B 

Sample Date 6/23/01 9/7/01 11/1/01 2/21/02 2/21/02 6/3/02 

Miscellaneous information filtered filtered filtered filtered filtered, filtered 

duplicate 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 8,362 8,359 8,359 8,358 8,358 8,358 

Field Temperature (o

C) 13.1 19.5 15.3 11.7 11.7 15.6 

pH, field, [lab] 4.21 4.47 4.44 3.49 3.49 3.69 

Eh (V) 0.262 0.196 0.21 0.362 0.362 0.347 

Spec Cond (PS/cm) field, [lab] 4,000 3,940 4,020 4,130 4,130 4,250 

TDS (mg/L) 4,500 4,500 4,500 4,600 4,700 4,600 

Constituent, dissolved (mg/L) 

Ca 530 540 540 520 530 550 

Mg 270 280 280 260 260 280 

Ba < 0.01 0.03 0.02 < 0.01 < 0.01 0.0057 

Na 58 59 58 62 63 61 

K 12 12 12 12 12 12 

SO4 3,100 3,300 3,500 3,700 3,600 4,000 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 < 5 

F 44 43 44 47 46 44 

Cl 43 45 53 46 45 44 

SiO2 56 53 53 62 62 60 

Al 77 72 80 94 93 89 

Fe 170 180 170 190 190 180 

Mn 19 18 19 17 18 20 

Cu 2.5 1.9 3.2 5.2 5.2 3.6 

Zn 1.5 1.4 1.5 1.6 1.6 1.5 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.0078 0.0055 0.008 0.007 0.008 0.0083 

Ag < 0.002 < 0.002 < 0.002 < 0.002 0.003 < 0.002 

Cr < 0.01 0.03 0.02 0.052 0.061 0.043 

Co 0.35 0.34 0.41 0.53 0.53 0.42 

Ni 0.62 0.62 0.69 0.78 0.78 0.68 

Pb < 0.009 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.0062 0.0062 0.0074 0.01 0.01 0.0082 

V 0.04 0.03 0.02 0.023 0.024 0.021 

Se 0.0078 0.01 0.01 0.012 0.011 0.011 

As < 0.005 < 0.005 0.0032 0.0042 0.0033 < 0.005 

Sum cations (meq/L) 42.2 40.9 41.3 41.5 42.2 41.0 

Sum anions (meq/L) 43.1 45.1 49.3 53.2 51.3 56.8 

Charge imbalance (percent) -2.30 -9.57 -17.7 -24.7 -19.4 -32.2 

140
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Campground Columbine Park 

Well ID Columbine CG Columbine CG COL #1 & 2 Columbine Well Columbine Well 

No. 1 No. 1 

Sample Date 8/24/93 6/12/01 7/16/94 7/25/94 10/29/96 

Miscellaneous information Unfiltered, all values from lab sheet; MC DB: Location MC DB: Location MC DB: Location 

TOTAL GW/A/1 MINE, author MINE, author MINE, author 

unknown, Ref ID unknown, Ref ID unknown, Ref ID 

Comments Slifer reports field This data was not *1 Cu=0.083 in ---

pH 6.6 and Spec used for plotting or SRK, but 0.23 in 

Cond 120 modeling purposes. MC DB 

Source ID (see table 2) Slifer 1996, Kent USFS MC DB MC DB, SRK 1995 MC DB 

1995, MC DB 

Lab ID (see table 2) --- Ecology & --- --- ---

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) --- --- --- --- ---

pH, field, [lab] 7.51 * --- 6.3 5.4 ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 169 * --- --- --- ---

TDS (mg/L) --- --- 408 1,450 ---

Constituent, dissolved (mg/L) 

Ca [26] 24.8 --- --- ---

Mg [3] 2.51 --- --- ---

Ba [< 0.1] 0.036 --- --- ---

Na [3] 2.16 --- --- ---

K [2] 0.787 --- --- ---

SO4 10 --- 223 756 779 

Alkalinity (as HCO3) --- --- --- --- ---

F --- --- --- --- ---

Cl --- --- --- --- ---

SiO2 --- --- --- --- ---

Al [< 0.1] <0.2 --- 5.5 ---

Fe [< 0.1] 0.274 9.52 0.554 ---

Mn [< 0.05] 0.00752 J 0.22 1.8 ---

Cu [< 0.05] 0.00386 J 0.05 0.083 *1 ---

Zn [1.6] 1.05 0.16 2.8 ---

Mo --- --- --- < 0.03 ---

Cd [< 0.001] <0.005 --- 0.013 ---

Ag [< 0.1] <0.01 --- --- ---

Cr [< 0.005] <0.01 --- --- ---

Co [< 0.05] <0.02 --- --- ---

Ni [< 0.1] 0.02 --- --- ---

Pb [0.01] 0.00735 --- < 0.1 ---

Hg [< 0.0005] <0.0002 --- --- ---

Be [< 0.1] <0.005 --- --- ---

V [< 0.1] <0.02 --- --- ---

Se [< 0.005] <0.02 --- --- ---

As [< 0.005] <0.025 --- --- ---

Sum cations (meq/L) --- --- --- --- ---

Sum anions (meq/L) --- --- --- --- ---

Charge imbalance (percent) --- --- --- --- ---

141
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Columbine Well No. 1 Columbine Well Columbine Well No. 1 Columbine Columbine 

No. 1 Well No. 1 Well No. 1 

Sample Date 1/27/97 7/9/97 9/9/97 3/9/98 4/30/98 

Miscellaneous information MC DB: Location MINE, MC DB: Location Author Vail Engineering --- ---

author unknown, Ref ID MINE, author "according to MC DB" 

M2.000 unknown, Ref ID 

Comments --- --- *1 Ni=0.15, < 0.02 DB --- ---

Source ID (see table 2) MC DB MC DB MC DB, RGC 8/10 Vail Vail 

Lab ID (see table 2) --- --- --- --- ---

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) --- --- 16.6 --- ---

pH, field, [lab] --- 5.56 [6] 5.7 5.6 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- 646, [647] 1,120 # 1,180 

TDS (mg/L) --- --- 495 --- ---

Constituent, dissolved (mg/L) 

Ca --- --- 79.2 --- ---

Mg --- --- 25.5 53.9 ---

Ba --- --- < 1 --- ---

Na --- --- 9.3 --- ---

K --- --- 1.6 --- ---

SO4 440 --- 340 640 700 

Alkalinity (as HCO3) --- --- 27 --- ---

F --- --- 4.64 8 10.1 

Cl --- --- < 10 --- ---

SiO2 --- --- 29.3 --- ---

Al 5.23 --- 2.2 6.3 ---

Fe 0.02 --- 0.5 --- ---

Mn 1.78 --- 0.8 2.3 3.1 

Cu 0.08 --- < 0.25 --- ---

Zn 2.03 --- 1.04 2.24 2.88 

Mo --- --- < 0.02 --- ---

Cd 0.014 --- 0.008 --- ---

Ag --- --- --- --- ---

Cr --- --- --- --- ---

Co --- --- < 0.02 --- ---

Ni --- --- 0.15 *1 --- ---

Pb --- --- < 0.02 --- ---

Hg --- --- --- --- ---

Be --- --- --- --- ---

V --- --- --- --- ---

Se --- --- --- --- ---

As --- --- < 0.001 --- ---

Sum cations (meq/L) --- --- 5.45 --- ---

Sum anions (meq/L) --- --- 6.40 --- ---

Charge imbalance (percent) --- --- -15.9 --- ---

142
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Columbine Columbine Columbine Columbine Columbine Columbine Columbine 

Well No. 1 Well No. 1 Well No. 1 Well No. 1 Well No. 1 Well No. 1 Well No. 1 

Sample Date 9/27/99 10/13/99 3/23/00 11/3/00 3/19/02 6/6/02 6/6/02 

Miscellaneous information --- off Location mine, --- filtered filtered filtered 

author 

unknown 

Comments --- --- --- --- --- --- ---

Source ID (see table 2) Vail Vail MC DB Vail MC CD MC CD MC CD 

Lab ID (see table 2) --- --- --- --- Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (o

C) --- --- --- --- --- 4.84 8.5 

pH, field, [lab] --- 5.33 5.1 --- --- --- 4.84 

Eh (V) --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 908 1,100 # --- 1,240 # --- 1,730 # 1,730 # 

TDS (mg/L) --- --- --- --- 1,400 --- ---

Constituent, dissolved (mg/L) 

Ca --- --- --- --- 220 --- ---

Mg --- 65 --- --- 90 --- ---

Ba --- --- --- --- 0.017 --- ---

Na --- --- --- --- 21 --- ---

K --- --- --- --- 4 --- ---

SO4 --- 780 --- 1,100 940 --- ---

Alkalinity (as HCO3) --- --- --- --- < 5 --- ---

F --- 14.5 --- --- 19 --- ---

Cl --- --- --- --- 16 --- ---

SiO2 --- --- --- --- 24 --- ---

Al --- 10 --- 5.3 [4.7] 16 --- ---

Fe --- --- --- --- < 0.1 --- ---

Mn --- 4 --- 14 8.7 --- ---

Cu --- --- --- --- 0.27 --- ---

Zn --- 4 --- --- 5.9 --- ---

Mo --- --- --- --- < 0.1 --- ---

Cd --- --- --- --- 0.04 --- ---

Ag --- --- --- --- < 0.002 --- ---

Cr --- --- --- --- < 0.01 --- ---

Co --- --- --- --- 0.00088 --- ---

Ni --- --- --- --- 0.85 --- ---

Pb --- --- --- --- < 0.003 --- ---

Hg --- --- --- --- < 0.0002 --- ---

Be --- --- --- --- 0.014 --- ---

V --- --- --- --- 0.00069 --- ---

Se --- --- --- --- 0.011 --- ---

As --- --- --- --- < 0.005 --- ---

Sum cations (meq/L) --- --- --- --- 15.8 --- ---

Sum anions (meq/L) --- --- --- --- 15.1 --- ---

Charge imbalance (percent) --- --- --- --- 4.54 --- ---

143
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Columbine Well No. 2 Columbine Columbine Well Columbine Well Columbine Columbine 

Well No. 2 No. 2 No. 2 Well No. 2 Well No. 2 

Sample Date 3/9/96 6/12/97 7/9/97 9/9/97 3/9/98 4/30/98 

Miscellaneous information Location MINE, author MC DB: MC DB: MC DB: Author problem with ---

unknown, Ref ID M2.000 Location Location MINE, Vail Engineering Screened 

MINE, author author Interval, 15858 

Comments SPRI reports data as --- --- *1 Ni=0.1, < --- ---

Spring 1994 0.02 DB 

Source ID (see table 2) MC DB, SPRI 1995, MC DB MC DB MC DB, RGC Vail Vail 

Slifer 1996 8/10 

Lab ID (see table 2) --- --- --- --- --- ---

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- --- 11.6 --- ---

pH, field, [lab] 5.9 --- 6.58 6.1, [6.2] 4.9 6.4 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- 577, [570] 935 883 

TDS (mg/L) 848 --- --- 435 --- ---

Constituent, dissolved (mg/L) 

Ca --- --- --- 67 --- ---

Mg 0.01 --- --- 20.2 40.7 ---

Ba --- --- --- < 1 --- ---

Na --- --- --- 7.8 --- ---

K --- --- --- 1.5 --- ---

SO4 536 400 528 280 460 450 

Alkalinity (as HCO3) --- --- --- 33 --- ---

F 2 --- --- 3.32 4.6 4.29 

Cl --- --- --- < 10 --- ---

SiO2 --- --- --- 27.8 --- ---

Al --- 2.83 --- 1.4 3 ---

Fe < 0.05 0.2 --- 0.4 --- ---

Mn 0.01 1.3 --- 0.5 0.8 1 

Cu < 0.01 0.03 --- < 0.25 --- ---

Zn 0.69 1.36 --- 0.74 1.36 14.7 

Mo < 0.02 --- --- < 0.02 --- ---

Cd < 0.01 0.008 --- < 0.005 --- ---

Ag --- --- --- --- --- ---

Cr --- --- --- --- --- ---

Co --- --- --- < 0.02 --- ---

Ni --- --- --- 0.1 *1 --- ---

Pb < 0.05 0.002 --- < 0.02 --- ---

Hg --- --- --- --- --- ---

Be --- --- --- --- --- ---

V --- --- --- --- --- ---

Se --- --- --- --- --- ---

As --- --- --- < 0.001 --- ---

Sum cations (meq/L) --- --- --- 4.64 --- ---

Sum anions (meq/L) --- --- --- 5.59 --- ---

Charge imbalance (percent) --- --- --- -19 --- ---

144
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Columbine Columbine Columbine Columbine Columbine Columbine Columbine 

Well No. 2 Well No. 2 Well No. 2 Well No. 2 Well No. 2 Well No. 2 Well No. 2 

Sample Date 9/27/99 10/13/99 9/6/00 11/3/00 8/7/01 3/19/02 6/6/02 

Miscellaneous information --- --- --- --- filtered filtered filtered 

Comments --- --- --- --- --- --- ---

Source ID (see table 2) Vail Vail Vail Vail MC CD MC CD MC CD 

Lab ID (see table 2) --- --- --- --- Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (o

C) --- --- --- --- --- --- 7.7 

pH, field, [lab] --- 6.06 --- --- --- --- 5.38 

Eh (V) --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 700 755 1,020 954 --- --- ---

TDS (mg/L) --- --- --- --- 530 1,000 1,300 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- --- 79 160 ---

Mg --- --- 2.7 --- 32 64 ---

Ba --- --- --- --- 0.017 0.026 ---

Na --- --- --- --- < 10 15 ---

K --- --- --- --- 2.2 3.2 ---

SO4 --- 440 700 620 340 700 ---

Alkalinity (as HCO3) --- --- --- --- 10 7.2 ---

F --- --- --- --- 8.4 12 ---

Cl --- --- --- --- 5.3 12 ---

SiO2 --- --- --- --- 16 19 ---

Al --- --- 6 [2.7] 6.2 [2.6] 7 11 ---

Fe --- --- --- --- 1.2 0.15 ---

Mn --- --- 6.5 6.8 2.6 5.8 ---

Cu --- --- --- --- 0.07 0.13 ---

Zn --- --- --- --- 1.9 3.6 ---

Mo --- --- --- --- < 0.1 < 0.1 ---

Cd --- --- --- --- 0.013 0.023 ---

Ag --- --- --- --- < 0.002 < 0.002 ---

Cr --- --- --- --- < 0.01 < 0.01 ---

Co --- --- --- --- < 0.01 0.0035 ---

Ni --- --- --- --- 0.3 0.41 ---

Pb --- --- --- --- 0.014 0.0043 ---

Hg --- --- --- --- < 0.0002 < 0.0002 ---

Be --- --- --- --- 0.013 0.014 ---

V --- --- --- --- < 0.01 < 0.01 ---

Se --- --- --- --- < 0.005 0.003 ---

As --- --- --- --- < 0.005 < 0.005 ---

Sum cations (meq/L) --- --- --- --- 6.02 11.7 ---

Sum anions (meq/L) --- --- --- --- 6.25 11.9 ---

Charge imbalance (percent) --- --- --- --- -3.72 -1.15 ---

145
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Douglas Well Douglas Well Douglas Well Douglas Well 

Sample Date 

Miscellaneous information 

6/10/98 

---

6/10/98 

---

6/7/01 

filtered 

9/6/01 

filtered 

Comments --- --- --- *1 Fe =1.1 "data for USGS?" 

0.66 "MC CD 9/18/02 

Source ID (see table 2) NMED: SLD lab sheet NMED: ACZ lab sheet MC CD MC CD 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

SLD (WC 98 02511, 

7.4 

5.61 

640 

481 

---

---

---

ACZ RG 70722 

7.4 

5.61 

640 

436, 470 

---

---

---

Paragon Analytics 

8.4 

5.8 

0.211 

975 

800 

---

---

Paragon Analytics 

8.7 

5.21 

0.306 

796 

640 

---

---

Constituent, dissolved (mg/L) 

Ca 71.6 69.9 100 86 

Mg 24 25.3 47 42 

Ba --- 0.031 0.032 0.028 

Na 10.4 8.9 12 10 

K < 5 1.9 3.6 2.3 

SO4 294 300 530 420 

Alkalinity (as HCO3) 2.6 8 6.9 6.7 

F --- 8.7 14 11 

Cl < 10 5 7 10 

SiO2 --- --- 18 17 

Al 6.4 6.74 15 10 

Fe 1 0.86 1.4 0.66 *1 

Mn 2.4 2.3 7 4.2 

Cu --- 0.06 0.17 0.12 

Zn 1.3 1.46 3 1.9 

Mo --- --- < 0.1 < 0.1 

Cd --- 0.009 0.021 0.013 

Ag --- --- < 0.002 < 0.002 

Cr --- --- < 0.01 < 0.01 

Co --- --- 0.013 < 0.01 

Ni 0.1 0.15 0.32 0.22 

Pb --- --- < 0.003 0.004 

Hg --- --- < 0.0002 < 0.0002 

Be --- 0.004 0.0076 0.006 

V --- --- < 0.01 < 0.01 

Se --- 0.001 < 0.005 < 0.005 

As --- --- < 0.005 < 0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

5.69 

5.06 

5.56 

5.61 

8.75 

9.31 

7.50 

7.61 

Charge imbalance (percent) 11.8 -0.97 -6.29 -1.48 

146
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID Douglas Well Douglas Well Douglas Well Douglas Well Douglas Well 

Sample Date 11/8/01 3/19/02 3/19/02 6/13/02 6/13/02 

Miscellaneous information filtered filtered dissolved unfiltered total filtered dissolved unfiltered total 

Comments *1 Se < 0.005, 0.0027 "MC CD --- --- --- ---

9/18/02", *2 As < 0.005, 0.0027 

"MC CD 9/18/02" 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 8.2 12 12 13.9 13.9 

pH, field, [lab] 4.87 4.6 4.6 5.53 5.53 

Eh (V) 0.174 0.249 0.249 0.164 0.164 

Spec Cond (PS/cm) field, [lab] 1,010 # 1,080 # 1,080 # 823 823 

TDS (mg/L) 780 950 950 620 620 

Constituent, dissolved (mg/L) 

Ca 130 130 [130] 87 [87] 

Mg 61 66 [65] 39 [39] 

Ba 0.032 0.031 [0.032] 0.024 [0.024] 

Na 11 15 [14] 10 [11] 

K 2.5 2.8 [3] 2.2 [2] 

SO4 520 670 670 400 400 

Alkalinity (as HCO3) 5.7 < 5 < 5 5.8 5.8 

F 12 15 [15] 7.4 [7.4] 

Cl 11 12 [12] 7.4 [7.4] 

SiO2 17 18 18 14 [15] 

Al 12 14 [15] 5.5 [5.6] 

Fe 0.87 0.76 [11] 3.8 [4.6] 

Mn 5 7.3 [7.3] 3.2 [3.2] 

Cu 0.14 0.17 [0.2] 0.053 [0.066] 

Zn 2.7 3.1 [3.1] 2.1 [2.1] 

Mo < 0.1 < 0.1 [< 0.1] < 0.1 [< 0.1] 

Cd 0.017 0.022 [0.022] 0.0099 [0.01] 

Ag < 0.002 0.0099 [< 0.002] < 0.002 [< 0.002] 

Cr < 0.01 < 0.01 [< 0.01] < 0.01 [< 0.01] 

Co < 0.01 0.014 [0.014] 0.031 [0.003] 

Ni 0.3 0.36 [0.36] 0.16 [0.16] 

Pb 0.0015 < 0.003 [< 0.003] < 0.003 [0.0013] 

Hg < 0.0002 < 0.0002 [0.0002] < 0.0002 [< 0.0002] 

Be 0.0069 0.0069 --- 0.0038 ---

V < 0.01 0.0013 --- < 0.01 [< 0.01] 

Se 0.0027 *1 0.0082 [0.0062] < 0.005 [< 0.005] 

As < 0.005 *2 0.0082 [<0.005] 0.0059 [0.0031] 

Sum cations (meq/L) 10.7 10.8 10.3 7.06 6.55 

Sum anions (meq/L) 8.87 11.3 11.2 7.10 7.11 

Charge imbalance (percent) 18.9 -3.99 -8.91 -0.61 -8.20 

147
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Columbine Park Cabin Area 

Well ID Fagerquist well Molycorp Cabin Well Molycorp Cabin Well 

Sample Date 

Miscellaneous information 

9/9/93 

unfiltered Total; no results in MC 

DB 

9/1/94 

Company Cabin Well 

3/19/02 

Company Cabin Well 

Comments --- *1 SO4=24 by SRK and 21 by Slifer ---

Source ID (see table 2) Kent 1995, Slifer 1996, MC DB Slifer 1996, SRK 1995, MC DB, 

URS 3/01 

MC CD 

Lab ID (see table 2) --- --- Paragon Analytics 

Depth to Water (m) 15.9 --- ---

Water Elevation (ft) --- --- ---

Field Temperature (o

C) --- --- ---

pH, field, [lab] 8.15 7.6 ---

Eh (V) --- --- ---

Spec Cond (PS/cm) field, [lab] 142 --- ---

TDS (mg/L) --- 160 120 

Constituent, dissolved (mg/L) 

Ca 24 --- 39 

Mg 2 --- 7.2 

Ba < 0.1 --- ---

Na 2 --- 3.6 

K 1 --- 1.2 

SO4 --- 24 *1 58 

Alkalinity (as HCO3) --- --- 65 

F --- ND 0.79 

Cl < 0.001 --- 1.4 

SiO2 --- --- 8.3 

Al < 0.1 ND 0.072 

Fe < 0.1 0.18 0.14 

Mn < 0.05 ND 0.0047 

Cu < 0.05 ND < 0.01 

Zn < 0.05 0.1 0.097 

Mo --- --- < 0.1 

Cd --- ND < 0.001 

Ag < 0.1 --- < 0.002 

Cr < 0.005 --- 0.00078 

Co < 0.05 --- < 0.01 

Ni < 0.1 --- 0.0072 

Pb < 0.005 --- < 0.003 

Hg < 0.0005 --- < 0.0002 

Be < 0.1 --- < 0.004 

V < 0.1 --- < 0.01 

Se < 0.005 --- < 0.005 

As < 0.005 --- < 0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

2.60 

2.21 

Charge imbalance (percent) --- --- 16.0 

148
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park 

Well ID MMW-33A MMW-33A MMW-33A MMW-33A MMW-33A 

Sample Date 6/12/01 9/5/01 11/27/01 1/30/02 5/13/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,843 7,834 7,828 7,826 7,829 

Field Temperature (o

C) 11 9.2 5.5 7.5 18.3 

pH, field, [lab] 4.66 4.37 4.68 4.39 4.24 

Eh (V) 0.1 0.411 0.361 0.259 0.344 

Spec Cond (PS/cm) field, [lab] 1,780 # 2,090 2,140 2,120 1,980 # 

TDS (mg/L) 1,700 1,900 2,000 1,900 1,800 

Constituent, dissolved (mg/L) 

Ca 180 230 240 220 190 

Mg 110 140 140 140 130 

Ba < 0.01 < 0.01 0.03 0.0085 0.0083 

Na 22 24 24 28 23 

K 4.4 4.7 5 4.5 4.8 

SO4 1,200 1,400 1,500 1,400 1,400 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 25 28 27 27 26 

Cl 18 23 24 22 20 

SiO2 24 24 24 26 24 

Al 48 57 56 57 50 

Fe 0.13 < 0.1 < 0.1 < 0.1 0.11 

Mn 28 29 31 31 28 

Cu 0.71 0.8 0.83 0.83 0.75 

Zn 5.1 6 6 5.6 5.6 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.03 0.04 0.04 0.043 0.038 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.002 0.019 0.022 

Co 0.22 0.26 0.26 0.26 0.23 

Ni 0.56 0.66 0.63 0.65 0.6 

Pb < 0.009 < 0.01 < 0.01 0.015 < 0.015 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.01 0.01 0.01 0.012 0.011 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.01 0.01 0.01 0.021 0.021 

As < 0.005 0.007 < 0.0037 0.0069 0.0072 

Sum cations (meq/L) 17.6 21.8 22.2 21.8 18.3 

Sum anions (meq/L) 18.7 21.2 23.2 21.4 21.2 

Charge imbalance (percent) -6.27 2.66 -4.67 1.76 -14.66 

149
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-1 P-1 P-1 P-1 P-1 

Sample Date 11/7/97 5/13/98 6/10/98 6/10/98 2/8/00 

Miscellaneous information 11/7/97 and 11/10/97 MC DB: 5/11/98 filtered filtered filtered 

in MC DB, but &11/17/98 

compiled as one 

Comments --- --- --- --- ---

Source ID (see table 2) MC DB, URS 3/01 MC DB, URS NMED: SLD lab sheet NMED: ACZ lab MC DB, MMW wkst, 

3/01 sheet RGC 8/10 

Lab ID (see table 2) --- --- SLD WC 98 02503 ACZ RG 70723 Paragon Analytics 

Depth to Water (m) --- --- 7.24 7.24 7.8 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 7.9 --- 8.1 8.1 8.3 

pH, field, [lab] 4.87 --- 4.98 4.98 4.68 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,070 # --- 1,710 # 1,710 # 1,840 

TDS (mg/L) 960 1,090 986 923 1,700 

Constituent, dissolved (mg/L) 

Ca 142 149 136 142 220 

Mg 60 64.7 53.8 57.2 100 

Ba 0.025 --- --- 0.018 0.03 

Na 15 15.7 15.3 15.2 23 

K 2.8 2.6 < 5 2.6 4.2 

SO4 610 680 643 650 1,100 

Alkalinity (as HCO3) 4 5 < 2.5 2 11 

F 13 15 --- 15 25 

Cl 13 15 10.9 13 18 

SiO2 23.8 --- --- --- 25.7 

Al 13.4 16.1 --- 15 28 

Fe 0.09 0.05 --- --- < 0.1 

Mn 6.34 7.28 --- 7.49 16 

Cu 0.23 0.19 --- 0.18 0.31 

Zn 3.48 3.91 --- 3.89 6.1 

Mo < 0.01 ND --- --- < 0.01 

Cd 0.023 0.026 --- 0.027 0.046 

Ag < 0.005 --- --- --- ---

Cr < 0.01 --- --- --- < 0.01 

Co < 0.01 ND --- --- 0.018 

Ni 0.39 0.45 --- 0.43 0.69 

Pb < 0.04 --- --- --- < 0.006 

Hg < 0.0002 --- --- --- ---

Be 0.02 --- --- 0.016 0.026 

V < 0.005 --- --- --- ---

Se < 0.002 --- --- 0.002 0.014 

As < 0.001 --- --- --- 0.013 

Sum cations (meq/L) 11.2 11.8 9.27 11.0 17.2 

Sum anions (meq/L) 10.4 11.6 11.1 11.1 17.9 

Charge imbalance (percent) 7.38 2.24 -17.7 -1.01 -3.72 

150
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-1 P-1 P-1 P-1 P-1 

Sample Date 6/5/01 9/11/01 11/27/01 2/14/02 5/15/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,811 7,806 7,798 7,796 7,798 

Field Temperature (o

C) 10.1 14.4 5.2 8.3 19.4 

pH, field, [lab] 5.03 4.77 4.59 4.58 4.4 

Eh (V) 0.14 0.296 0.305 0.202 0.259 

Spec Cond (PS/cm) field, [lab] 823 1,083 1,620 1,840 1,850 # 

TDS (mg/L) 600 850 1,400 1,600 1,800 

Constituent, dissolved (mg/L) 

Ca 78 110 190 200 210 

Mg 37 54 100 110 110 

Ba < 0.01 < 0.01 < 0.01 0.021 0.02 

Na 11 13 18 22 22 

K 2.4 2.9 4.6 4.7 4.5 

SO4 430 580 1,000 1,200 1,300 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 9.1 13 21 24 26 

Cl 12 12 19 20 20 

SiO2 16 19.7 23.5 25.7 25.7 

Al 11 15 29 33 35 

Fe < 0.1 < 0.1 0.13 0.14 0.09 

Mn 4.9 6.7 17 20 19 

Cu 0.15 0.16 0.4 0.41 0.4 

Zn 2.2 3.1 6.1 6.3 5.9 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.01 0.02 0.04 0.049 0.046 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.00055 0.015 0.009 

Co < 0.01 < 0.01 0.02 0.032 0.035 

Ni 0.24 0.35 0.65 0.73 0.71 

Pb < 0.003 < 0.003 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.01 0.01 0.02 0.026 0.024 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 0.0097 0.014 0.0078 

As < 0.005 < 0.005 < 0.005 0.011 0.0081 

Sum cations (meq/L) 6.96 9.40 16.5 17.3 16.7 

Sum anions (meq/L) 7.77 9.88 16.3 19.3 20.2 

Charge imbalance (percent) -11.0 -5.04 1.52 -11.1 -19.2 

151
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-2 P-2 P-2 P-2 P-2 

Sample Date 

Miscellaneous information 

Comments 

11/7/97 

11/7 & 11/10 

1997 accd to MC 

DB 

---

5/11/98 

---

---

6/10/98 

filtered 

---

6/10/98 

filtered 

---

2/8/00 

filtered 

---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB, URS 

3/01 

---

MC DB, 

URS 3/01 

---

NMED: SLD lab sheet 

SLD WC 98 02504 

NMED: ACZ lab 

sheet 

ACZ RG 70724 

MC DB, MMW wkst, 

RGC 8/10 

Paragon Analytics 

Depth to Water (m) --- --- 4.1 4.1 6.31

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 8.9 --- 7.8 7.8 6.2

pH, field, [lab] 4.93 --- 5.22 5.22 4.86

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,030 # --- 880 880 1,440

TDS (mg/L) 910 930 672 616, 680 1,200

Constituent, dissolved (mg/L) 

Ca 146 131 93.6 101 160 

Mg 59 57.6 35.7 38.2 77 

Ba 0.027 --- --- 0.021 0.022 

Na 15 13.2 11.4 11.3 17 

K 2.4 2.3 < 5 1.9 2.8 

SO4 590 540 432 430 780 

Alkalinity (as HCO3) 4 4 < 2.5 2 5.6 

F 12 11 --- 7.7 19 

Cl 12 13 < 10 10 14 

SiO2 22 --- --- --- 19 

Al 13.7 15.3 --- 8.78 21 

Fe 0.01 0.05 --- --- < 0.1 

Mn 7.82 8.33 --- 4.13 13 

Cu 0.23 0.21 --- 0.11 0.27 

Zn 2.44 2.39 --- 1.93 3.2 

Mo < 0.01 ND --- --- < 0.1 

Cd 0.017 0.016 --- 0.011 0.025 

Ag < 0.005 --- --- --- < 0.002 

Cr 0.01 --- --- --- < 0.01 

Co 0.03 0.04 --- 0.01 0.71 

Ni 0.31 0.29 --- 0.2 0.39 

Pb < 0.04 --- --- --- < 0.006 

Hg < 0.0002 --- --- --- < 0.0002 

Be 0.01 --- --- 0.005 0.008 

V < 0.005 --- --- --- < 0.01 

Se < 0.002 --- --- 0.001 0.012 

As < 0.001 --- --- --- 0.0054 

Sum cations (meq/L) 11.4 10.9 6.62 7.9 13.4 

Sum anions (meq/L) 9.94 9.18 7.50 7.6 13.1 

Charge imbalance (percent) 13.6 17.5 -12.5 3.20 2.62 

152
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-2 P-2 P-2 P-2 P-2 

Sample Date 6/5/01 9/11/01 11/27/01 2/14/02 5/15/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,810 7,806 7,798 7,797 7,799 

Field Temperature (o

C) 9.7 19.3 6.1 9.6 17.4 

pH, field, [lab] 5.04 4.88 4.64 4.62 4.62 

Eh (V) 0.216 0.32 0.333 0.283 0.344 

Spec Cond (PS/cm) field, [lab] 1,290 # 1,190 # 1,450 # 1,600 # 1,360 # 

TDS (mg/L) 1,000 960 1,200 1,400 1,200 

Constituent, dissolved (mg/L) 

Ca 150 130 160 170 150 

Mg 68 61 84 94 79 

Ba 0.032 0.04 0.021 0.018 0.02 

Na 16 16 16 20 16 

K 3.2 3.1 4.3 4 3.1 

SO4 730 660 850 980 980 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 12 12 17 22 16 

Cl 25 14 15 17 14 

SiO2 24 21 21 21 20 

Al 16 14 26 32 23 

Fe 0.47 < 0.1 < 0.1 0.062 < 0.1 

Mn 7.6 7.7 15 19 13 

Cu 0.23 0.25 0.41 0.47 0.3 

Zn 2.9 3.2 4.3 4.1 3.1 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.019 0.019 0.03 0.031 0.024 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.0033 0.0056 0.0042 

Co 0.035 0.039 0.054 0.08 0.068 

Ni 0.33 0.32 0.48 0.48 0.4 

Pb < 0.003 < 0.003 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.008 0.006 0.012 0.012 0.0085 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.0056 < 0.005 0.0072 0.0068 < 0.005 

As < 0.005 < 0.005 0.003 0.0054 < 0.005 

Sum cations (meq/L) 12.0 10.4 14.3 15.4 12.3 

Sum anions (meq/L) 12.5 10.9 13.9 15.8 16.0 

Charge imbalance (percent) -4.04 -4.90 2.20 -2.66 -26.3 

153
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-3 P-3 P-3 P-3 P-3 

Sample Date 11/7/97 11/17/97 6/10/98 6/10/98 2/8/00 

Miscellaneous information --- 11/17/98 in filtered filtered filtered 

MD DB 

Comments --- --- --- --- *1 F=17 in URS 

Source ID (see table 2) MC DB, URS MC DB, URS NMED: SLD lab sheet NMED: ACZ lab MC DB, MMW wkst, 

3/01 3/01 sheet RGC 8/10, URS 3/01 

Lab ID (see table 2) --- --- SLD (WC 98 02505, ACZ RG70645 Paragon Analytics 

Depth to Water (m) --- --- 8.5 8.5 10.6 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) --- --- 6.7 6.7 8.3 

pH, field, [lab] 4.88 --- 5.55 5.55 4.96 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 800 --- 843 843 1,440 

TDS (mg/L) 690 810 466 389, 450 1,200 

Constituent, dissolved (mg/L) 

Ca 101 120 63.5 67.3 170 

Mg 43.2 50.1 24.2 25.1 76 

Ba 0.046 --- --- 0.023 0.041 

Na 11.3 12.5 9.1 9.2 18 

K 2.1 2.3 < 5 1.5 3.7 

SO4 430 520 279 260 790 

Alkalinity (as HCO3) 9 7 3.8 6 9.3 

F 10 9.9 --- 7.1 10 *1 

Cl 9 12 < 10 6 14 

SiO2 19.4 --- --- --- 21.4 

Al 6.42 10.3 5.4 6.04 16 

Fe 0.01 0.02 --- --- < 0.1 

Mn 1.93 3.74 1.6 1.58 7.8 

Cu 0.04 0.11 --- 0.04 0.17 

Zn 1.61 2.43 1.1 1.3 4.2 

Mo < 0.05 ND --- --- < 0.1 

Cd 0.012 0.019 --- 0.009 0.032 

Ag < 0.005 --- --- --- < 0.002 

Cr 0.01 --- --- --- < 0.01 

Co < 0.01 ND --- --- < 0.01 

Ni 0.16 0.3 0.2 0.17 0.51 

Pb < 0.04 --- --- --- < 0.003 

Hg < 0.0002 --- --- --- ---

Be 0.01 --- --- 0.006 0.016 

V < 0.005 --- --- --- 0.01 

Se 0.001 --- --- --- 0.0065 

As < 0.001 --- --- --- < 0.005 

Sum cations (meq/L) 7.96 9.54 5.21 5.47 13.4 

Sum anions (meq/L) 7.84 9.25 4.89 4.89 13.1 

Charge imbalance (percent) 1.47 3.1 6.5 11.3 2.37 

154
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-3 P-3 P-3 P-3 P-3 P-3 

Sample Date 6/5/01 9/11/01 11/27/01 2/14/02 5/14/02 8/1/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 7,816 7,812 7,805 7,804 7,807 ---

Field Temperature (o

C) 8.7 12.1 2.4 7.2 12.3 23.7 

pH, field, [lab] 5.64 4.9 4.92 4.75 4.74 4.49 

Eh (V) 0.131 0.312 0.281 0.29 0.39 0.293 

Spec Cond (PS/cm) field, [lab] 707 821 1,250 # 1,520 # 1,360 # 1,460 # 

TDS (mg/L) 510 630 980 1,200 1,200 ---

Constituent, dissolved (mg/L) 

Ca 73 85 150 170 150 ---

Mg 33 41 70 90 79 ---

Ba 0.015 0.018 0.026 0.028 0.025 ---

Na < 10 11 13 19 14 ---

K 2.3 2.5 3.7 4 3.8 ---

SO4 370 430 680 920 800 ---

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 ---

F 9.1 10 13 21 17 ---

Cl 9 10 14 16 13 ---

SiO2 16 18 19 24 20 ---

Al 8.5 10 15 24 18 ---

Fe 0.11 < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 3.3 4.3 6.7 13 8.9 ---

Cu 0.08 0.1 0.18 0.3 0.23 ---

Zn 1.9 2.2 3.4 4.6 4.5 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.013 0.016 0.024 0.035 0.03 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 0.0011 0.0015 0.0017 ---

Co < 0.01 < 0.01 0.0055 0.02 0.0084 ---

Ni 0.21 0.25 0.39 0.55 0.49 ---

Pb < 0.003 < 0.003 < 0.003 < 0.006 < 0.003 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.0088 0.0094 0.013 0.018 0.016 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se < 0.005 < 0.005 0.0057 0.0063 0.0055 ---

As < 0.005 < 0.005 0.0026 0.0044 0.0029 ---

Sum cations (meq/L) 5.86 7.38 12.3 14.6 12.4 ---

Sum anions (meq/L) 6.75 7.62 11.6 15.2 13.2 ---

Charge imbalance (percent) -14.1 -3.24 6.00 -3.78 -5.61 ---

155
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-4 P-4A P-4A P-4A P-4A 

Sample Date 5/11/98 11/10/97 6/10/98 6/10/98 2/7/00 

Miscellaneous information P4 is separate from P4A or 4B, --- filtered filtered DRY 

could be 4B or analysis from 

TAILINGS area 

Comments This data was not used for plotting DRY: 11/7/97 - --- --- 2/7/00 in MMW 

or modeling purposes. 11/10/97 wkst, RGC; 2/8/00 

in MC DB 

Source ID (see table 2) MC DB MC DB NMED: SLD lab sheet NMED: ACZ MC DB, MMW 

lab sheet wkst, RGC 8/10 

Lab ID (see table 2) --- --- SLD WC 98 02506, ACZ RG 70646 ---

Depth to Water (m) --- --- 6.4 6.4 ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) --- --- 6.4 6.4 ---

pH, field, [lab] --- --- 5.47 5.47 ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- 883 883 ---

TDS (mg/L) 1,290 --- 664 660, 571 ---

Constituent, dissolved (mg/L) 

Ca 183 --- 98.1 106 ---

Mg 79.6 --- 37 40.3 ---

Ba --- --- --- --- ---

Na 17.9 --- 10.6 11.4 ---

K 2.8 --- < 5 1.8 ---

SO4 850 --- 422 380 ---

Alkalinity (as HCO3) 3 --- < 2.5 4 ---

F --- --- --- 7.4 ---

Cl --- --- 65.7 11 ---

SiO2 --- --- --- --- ---

Al --- --- 5.6 6.39 ---

Fe 0.06 --- --- --- ---

Mn 12.7 --- 2.9 2.8 ---

Cu 0.37 --- --- 0.07 ---

Zn 4.1 --- 1.1 1.23 ---

Mo ND --- --- --- ---

Cd --- --- --- 0.007 ---

Ag --- --- --- --- ---

Cr --- --- --- --- ---

Co 0.08 --- --- 0.01 ---

Ni 0.53 --- 0.1 0.14 ---

Pb --- --- --- --- ---

Hg --- --- --- --- ---

Be --- --- --- 0.003 ---

V --- --- --- --- ---

Se --- --- --- --- ---

As --- --- --- --- ---

Sum cations (meq/L) 13.0 --- 7.44 8.14 ---

Sum anions (meq/L) 13.6 --- 8.95 6.81 ---

Charge imbalance (percent) -4.49 --- -18.4 17.8 ---

156
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-4B P-4B P-4B P-4B P-4B 

Sample Date 11/7/97 5/11/98 6/10/98 6/10/98 2/8/00 

Miscellaneous information --- --- filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC DB, URS MC DB, URS NMED: SLD lab NMED: ACZ lab MC DB, MMW wkst, 

3/01 3/01 sheet sheet RGC 8/10 

Lab ID (see table 2) --- --- SLD WC 98 ACZ RG 70647 Paragon Analytics 

Depth to Water (m) --- --- 6.4 6.4 8.46 

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 8.2 --- 9 9 7.7 

pH, field, [lab] 4.6 --- 4.78 4.78 4.59 

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,390 # --- 1,610 # 1,610 # 1,910 

TDS (mg/L) 1,320 1,290 1,350 1250, 1340 1,900 

Constituent, dissolved (mg/L) 

Ca 201 183 182 195 220 

Mg 81 79.6 75.6 81.3 110 

Ba 0.014 --- --- 0.014 0.015 

Na 19.7 17.9 18.4 20.3 25 

K 3.1 2.8 < 5 2.9 4.4 

SO4 860 850 892 870 1,100 

Alkalinity (as HCO3) 4 3 < 2.5 2 9.5 

F 17 16 --- 20 23 

Cl 16 17 69.9 16 19 

SiO2 25.5 --- --- --- 23.5 

Al 24.9 24.7 --- 25.8 36 

Fe < 0.01 0.06 --- --- < 0.1 

Mn 13.7 12.7 --- 12.6 21 

Cu 0.41 0.37 --- 0.37 0.5 

Zn 4.18 4.1 --- 4.54 5.3 

Mo < 0.01 ND --- --- < 0.1 

Cd 0.034 0.032 --- 0.035 0.043 

Ag < 0.005 --- --- --- < 0.002 

Cr 0.01 --- --- --- < 0.01 

Co 0.08 0.09 --- 0.07 0.13 

Ni 0.5 0.53 --- 0.58 0.63 

Pb < 0.04 --- --- --- < 0.009 

Hg < 0.0002 --- --- --- < 0.0002 

Be 0.01 --- --- 0.011 0.015 

V < 0.005 --- --- --- < 0.01 

Se 0.002 --- --- 0.002 0.015 

As < 0.001 --- --- --- 0.0069 

Sum cations (meq/L) 15.6 14.6 12.1 15.3 18.8 

Sum anions (meq/L) 13.8 13.8 16.5 14.1 17.4 

Charge imbalance (percent) 12.0 5.84 -31.0 8.46 7.85 

157
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-4B P-4B P-4B P-4B P-4B 

Sample Date 6/5/01 11/26/01 2/14/02 5/15/02 8/6/02 

Miscellaneous information filtered filtered filtered filtered ---

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,815 7,803 7,802 7,804 ---

Field Temperature (o

C) 9.9 8.4 8.7 13.8 12.9 

pH, field, [lab] 4.64 4.55 4.79 4.42 4.37 

Eh (V) 0.226 0.321 0.286 0.385 0.303 

Spec Cond (PS/cm) field, [lab] 1,860 # 1,880 # 1,890 # 1,960 # 1,910 # 

TDS (mg/L) 1,700 1,700 1,700 1,800 ---

Constituent, dissolved (mg/L) 

Ca 210 210 210 220 ---

Mg 110 120 120 120 ---

Ba 0.011 0.013 0.026 0.013 ---

Na 22 21 24 24 ---

K 4.4 4.8 4.6 4.6 ---

SO4 1,200 1,200 1,200 1,400 ---

Alkalinity (as HCO3) < 5 < 5 5.1 0 ---

F 24 25 27 26 ---

Cl 18 21 20 21 ---

SiO2 24 24 26 26 ---

Al 41 41 40 44 ---

Fe < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 24 24 25 24 ---

Cu 0.6 0.59 0.58 0.6 ---

Zn 5 6 5.6 5.3 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.039 0.044 0.042 0.042 ---

Ag < 0.002 < 0.002 < 0.002 0.002 ---

Cr < 0.01 0.0081 0.001 0.0039 ---

Co 0.15 0.14 0.14 0.14 ---

Ni 0.59 0.65 0.64 0.63 ---

Pb < 0.009 < 0.009 < 0.009 < 0.009 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.014 0.017 0.016 0.017 ---

V < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.0081 0.011 0.011 0.0099 ---

As < 0.005 0.0047 0.0055 0.0036 ---

Sum cations (meq/L) 18.3 19.0 19.0 18.7 ---

Sum anions (meq/L) 18.8 18.8 19.0 21.7 ---

Charge imbalance (percent) -2.75 0.99 0.22 -15.2 ---

158
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-5A P-5A P-5A P-5A P-5A 

Sample Date 

Miscellaneous information 

11/7/97 

11/7/1997 - 11/10/97 

MC DB 

6/10/98 

filtered 

6/10/98 

filtered 

2/8/00 

DRY 

8/27/01 

filtered 

Comments DRY --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB 

---

NMED: SLD lab sheet 

SLD (WC-98 02509, 

NMED: ACZ lab 

sheet 

MC DB, MMW wkst, 

RGC 8/10 

ACZ RG 70648 Paragon Analytics 

MC CD 

Paragon Analytics 

Depth to Water (m) --- 5.4 5.4 --- ---

Water Elevation (ft) --- --- --- --- 7,821

Field Temperature (o

C) --- 8.9 8.9 --- 13.3

pH, field, [lab] --- 5.9, [5.46] 5.9, [5.46] --- 4.79

Eh (V) --- --- --- --- 0.329

Spec Cond (PS/cm) field, [lab] --- 888 888 --- 1,380 #

TDS (mg/L) --- 674 623, 760 --- 1,200

Constituent, dissolved (mg/L) 

Ca --- 113 102 --- 150 

Mg --- 38.3 38.8 --- 77 

Ba --- --- 0.03 --- 0.025 

Na --- 12.2 11.3 --- 17 

K --- < 5 1.9 --- 3.5 

SO4 --- 429 430 --- 850 

Alkalinity (as HCO3) --- < 2.5 3 --- < 5 

F --- --- 11 --- 17 

Cl --- 65.5 10 --- 15 

SiO2 --- --- --- --- 21 

Al --- 8.7 9.66 --- 29 

Fe --- --- --- --- 0.39 

Mn --- 4.6 4.47 --- 14 

Cu --- 0.1 0.12 --- 0.39 

Zn --- 1.5 1.66 --- 3.4 

Mo --- --- --- --- < 0.1 

Cd --- --- 0.011 --- 0.025 

Ag --- --- --- --- < 0.002 

Cr --- --- --- --- 0.018 

Co --- --- 0.02 --- 0.089 

Ni --- 0.2 0.18 --- 0.43 

Pb --- --- --- --- < 0.006 

Hg --- --- --- --- < 0.0002 

Be --- --- 0.004 --- 0.01 

V --- --- --- --- < 0.01 

Se --- --- 0.001 --- 0.0073 

As --- --- --- --- 0.0053 

Sum cations (meq/L) --- 8.41 7.90 --- 13.2 

Sum anions (meq/L) --- 8.92 7.66 --- 13.7 

Charge imbalance (percent) --- -5.79 3.10 --- -3.55 

159
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-5B P-5B P-5B P-5B P-5B 

Sample Date 

Miscellaneous information 

11/7/97 

---

5/11/98 

---

6/10/98 

filtered 

6/10/98 

filtered 

2/7/00 

filtered 

Comments --- --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB, URS 

3/01 

MC DB, URS 

3/01 

--- ---

NMED: SLD lab sheet 

SLD (WC-98 02510, 

NMED: ACZ lab 

sheet 

ACZ RG 70649 

MC DB, MMW wkst, 

RGC 8/10, URS 3/01 

Paragon Analytics 

Depth to Water (m) --- --- 5.9 5.9 7.53

Water Elevation (ft) --- --- --- --- ---

Field Temperature (o

C) 8.2 --- 8.9 8.9 8.8

pH, field, [lab] 4.44 --- 4.65 4.65 4.49

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,450 # --- 1,560 # 1,560 # 2,090

TDS (mg/L) 1,400 1,370 1,330 1230, 1470 2,000

Constituent, dissolved (mg/L) 

Ca 183 181 171 172 230 

Mg 90 84.4 71.5 77.4 120 

Ba 0.014 --- --- 0.012 0.015 

Na 19.6 17.9 18.3 18.5 26 

K 3.2 2.8 < 5 2.7 4.5 

SO4 900 920 877 870 1,300 

Alkalinity (as HCO3) 2 ND < 2.5 2 7.2 

F 18 16 --- 18 24 

Cl 17 16 69.3 16 21 

SiO2 26.1 --- --- --- 23.5 

Al 32.7 31.7 30 31.3 46 

Fe < 0.01 0.08 --- --- < 0.1 

Mn 18.7 16.2 17 16.4 26 

Cu 0.5 0.43 0.4 0.4 0.62 

Zn 3.86 3.33 3.1 3.46 4.6 

Mo < 0.01 ND --- --- < 0.1 

Cd 0.031 0.025 0.02 0.026 0.038 

Ag < 0.005 --- --- --- < 0.002 

Cr < 0.01 --- --- --- < 0.01 

Co 0.15 0.14 --- 0.14 0.2 

Ni 0.4 0.4 0.4 0.37 0.56 

Pb < 0.04 --- --- --- < 0.009 

Hg < 0.0002 --- --- --- < 0.0002 

Be 0.01 --- --- 0.008 0.011 

V < 0.005 --- --- --- < 0.01 

Se < 0.002 --- --- 0.001 0.021 

As < 0.001 --- --- --- 0.0059 

Sum cations (meq/L) 16.1 15.2 14.0 14.6 20.1 

Sum anions (meq/L) 14.3 14.6 14.9 14.1 20.2 

Charge imbalance (percent) 11.7 4.45 -6.38 3.57 -0.81 

160
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-5B P-5B P-5B P-5B P-5B P-5B 

Sample Date 6/5/01 8/27/01 11/26/01 2/7/02 5/14/02 7/30/02 

Miscellaneous information filtered filtered filtered filtered filtered ---

Comments --- --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Paragon 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 7,820 7,818 7,813 7,812 7,815 ---

Field Temperature (o

C) 10.3 19.9 7.9 10.5 13 23.1 

pH, field, [lab] 4.87 4.65 4.46 4.46 4.39 4.27 

Eh (V) 0.257 0.354 0.329 0.33 0.387 0.326 

Spec Cond (PS/cm) field, [lab] 1,720 # 1,840 # 1,950 # 1,980 # 2,000 1,890 # 

TDS (mg/L) 1,400 1,800 1,800 1,900 1,900 ---

Constituent, dissolved (mg/L) 

Ca 220 240 220 230 210 ---

Mg 94 110 120 130 130 ---

Ba 0.026 0.027 0.013 0.013 0.014 ---

Na 20 22 22 28 22 ---

K 4.3 4.8 4.6 4.8 4.9 ---

SO4 990 1,200 1,300 1,400 1,400 ---

Alkalinity (as HCO3) < 5 5.1 < 5 < 5 < 5 ---

F 23 25 24 28 26 ---

Cl 16 19 23 22 20 ---

SiO2 26 26 24 26 24 ---

Al 26 32 49 51 47 ---

Fe < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 16 17 27 27 27 ---

Cu 0.69 0.9 0.67 0.68 0.66 ---

Zn 4.9 6 5.2 5.4 5.5 ---

Mo < 0.1 < 0.1 < 0.1 0.035 < 0.1 ---

Cd 0.045 0.055 0.037 0.039 0.039 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 0.0022 0.0069 0.0075 ---

Co 0.015 0.018 0.21 0.22 0.21 ---

Ni 0.75 0.95 0.56 0.59 0.59 ---

Pb < 0.006 0.0074 < 0.009 < 0.009 0.0056 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.015 0.019 0.011 0.012 0.012 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se < 0.005 0.01 0.014 0.013 0.019 ---

As < 0.005 0.0079 0.006 0.0071 0.0027 ---

Sum cations (meq/L) 16.8 17.9 19.8 20.7 19.2 ---

Sum anions (meq/L) 15.7 18.3 20.2 21.5 21.6 ---

Charge imbalance (percent) 6.79 -2.03 -1.9 -3.91 -11.5 ---

161
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-5C P-5C P-5C P-5C P-5C P-5C 

Sample Date 

Miscellaneous information 

11/7/97 

11/7/97 - 11/10/97 

5/11/98 

---

6/10/98 

filtered 

6/10/98 

filtered 

2/7/00 

filtered 

6/5/01 

filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB, URS 

3/01 

---

MC DB, 

URS 3/01 

---

NMED: ACZ lab 

sheet 

ACZ RG 70650 

NMED: SLD 

lab sheet 

SLD WC-98 

MC DB, MMW wkst, 

RGC 8/10 

MC CD 

Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- 6.4 6.4 8 ---

Water Elevation (ft) --- --- --- --- --- 7,824 

Field Temperature (o

C) 8.6 --- 9.7 9.7 8.6 10.3 

pH, field, [lab] 4.69 --- 4.92 4.92 4.63 4.57 

Eh (V) --- --- --- --- --- 0.242 

Spec Cond (PS/cm) field, [lab] 1,530 # --- 1,730 # 1,730 # 2,040 1,730 # 

TDS (mg/L) 1,510 1,320 1390, 1540 1,440 1,900 1,500 

Constituent, dissolved (mg/L) 

Ca 213 210 229 228 250 180 

Mg 94 85 82.4 79.8 120 100 

Ba 0.029 --- 0.027 --- 0.029 0.012 

Na 23 19.5 21.2 22.3 26 21 

K 3.3 3.1 3 < 5 4.7 4 

SO4 910 940 990 964 1,200 1,100 

Alkalinity (as HCO3) 5 6 4 2.6 6.9 < 5 

F 24 20 14 --- 28 22 

Cl 17 17 17 71.2 20 16 

SiO2 26.8 --- --- --- 25.7 24 

Al 24.2 22.2 20 --- 33 41 

Fe < 0.01 0.06 --- --- < 0.1 < 0.1 

Mn 12.8 12.2 10.2 --- 21 24 

Cu 0.6 0.59 0.53 --- 0.85 0.57 

Zn 5.29 4.8 4.49 --- 6.2 4.1 

Mo < 0.01 ND --- --- < 0.1 < 0.1 

Cd 0.044 0.044 0.04 --- 0.056 0.032 

Ag < 0.005 --- --- --- < 0.002 < 0.002 

Cr 0.01 --- --- --- < 0.01 < 0.01 

Co 0.01 0.01 --- --- 0.031 0.18 

Ni 0.76 0.75 0.76 --- 0.83 0.47 

Pb < 0.04 --- --- --- 0.015 < 0.009 

Hg < 0.0002 --- --- --- < 0.0002 < 0.0002 

Be 0.01 --- 0.011 --- 0.019 0.01 

V < 0.005 --- --- --- < 0.01 < 0.01 

Se 0.002 --- 0.003 --- 0.014 0.0061 

As < 0.001 --- --- --- 0.011 < 0.005 

Sum cations (meq/L) 16.7 15.5 16.0 14.1 20.1 16.7 

Sum anions (meq/L) 14.7 15.2 15.9 17.3 18.9 17.3 

Charge imbalance (percent) 13.2 2.02 0.60 -20.4 6.04 -3.92 

162
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Columbine Park Cabin Area 

Well ID P-5C P-5C P-5C P-5C P-5C 

Sample Date 8/27/01 11/26/01 2/7/02 5/14/02 7/30/02 

Miscellaneous information filtered filtered filtered filtered ---

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,819 7,811 7,810 7,813 ---

Field Temperature (o

C) 18.6 7.7 8.4 11.6 21.3 

pH, field, [lab] 4.57 4.95 4.69 4.55 4.5 

Eh (V) 0.348 0.319 0.316 0.372 0.262 

Spec Cond (PS/cm) field, [lab] 1,620 1,880 # 1,820 # 1,850 1,760 # 

TDS (mg/L) 1,500 1,700 1,600 1,800 ---

Constituent, dissolved (mg/L) 

Ca 180 240 230 230 ---

Mg 96 110 110 120 ---

Ba 0.048 0.028 0.025 0.026 ---

Na 20 22 27 21 ---

K 3.8 4.9 5 5.1 ---

SO4 1,000 1,200 1,200 1,200 ---

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 ---

F 19 25 28 27 ---

Cl 16 20 18 19 ---

SiO2 24 26 28 26 ---

Al 34 32 32 31 ---

Fe < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 21 20 19 20 ---

Cu 0.65 0.9 0.85 0.87 ---

Zn 4.4 6.2 6.2 6.6 ---

Mo < 0.1 0.039 < 0.01 < 0.1 ---

Cd 0.032 0.053 0.052 0.054 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 0.0054 0.0056 0.0085 ---

Co 0.17 0.023 0.024 0.026 ---

Ni 0.49 0.86 0.85 0.86 ---

Pb < 0.009 0.01 0.0082 0.014 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.0084 0.018 0.019 0.019 ---

V < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.0091 0.011 0.012 0.014 ---

As < 0.005 0.011 0.0079 0.0069 ---

Sum cations (meq/L) 15.7 18.8 18.5 18.7 ---

Sum anions (meq/L) 15.3 19.0 19.1 18.8 ---

Charge imbalance (percent) 2.06 -1.14 -3.27 -0.40 ---

163
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A 

Sample Date 

Miscellaneous information 

11/8/94 

filtered 

11/8/94 

filtered 

11/8/94 

filtered 

11/8/94 

filtered 

11/19/94 

filtered; correct 

date 

6/1/95 

---

Comments --- --- *1 Zn =1.9 / 

2.1 

--- sampled after 

aquifer test 

---

Source ID (see table 2) 

Lab ID (see table 2) 

Slifer 1996 

SLD IC-94 

6425 

SPRI 1995 

ETC 

Slifer 1996 

1

SLD IC-94 

0656 

SPRI 1995, SRK 

995, MC DB, MMW 

kt ETC 

SPRI 1995, MC 

DB 

ETC 

MMW wkst 

---

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

6.61 

5.9, [4.41] 

1210, [1,820 

1,880 # 

---

---

---

6.61 

7.8 

5.8 

2,400 

1,700 

---

---

6.61 

5.9 

1,210 

1,880 

---

---

---

6.61 

7.8 

5.8 

2,400 

1,700 

---

---

---

---

---

---

---

---

1,700 

---

---

---

4.65 

1,770 

---

---

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

232 # 

90.7 

32 

14 

---

270 

76.7 

< 0.01 

26.4 

2.5 

290 

83 

< 0.1 

---

---

275 

77.9 

< 0.01 

26.5 

2.8 

245 

69.7 

25.6 

3.7 

---

---

---

---

---

---

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

1,030 

< 3 

8.3 

21 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

1,100 

< 1 

7.96 

26 

30 

34.2 

< 0.05 

12.8 

0.58 

2.07 

< 0.02 

0.024 

< 0.1 

< 0.01 

0.137 

0.293 

< 0.002 

< 0.0002 

0.008 

< 0.01 

< 0.005 

< 0.005 

---

< 3 

30 

33 

< 0.1 

15 

0.5 

1.9 *1 

< 0.01 

0.03 

< 0.01 

< 0.01 

0.13 

0.3 

< 0.01 

< 0.005 

< 0.01 

< 0.01 

< 0.05 

< 0.01 

---

---

1,100 

< 1 

11.2 

27 

31 

33.4 

< 0.05 

13.8 

0.558 

2.29 

< 0.02 

0.028 

< 0.1 

< 0.01 

0.148 

0.325 

0.004 

< 0.0002 

0.008 

< 0.01 

< 0.005 

< 0.005 

1,200 

ND 

8.28 

26 

31.6 

0.086 

13.1 

0.534 

2.68 

ND 

0.0224 

0.141 

0.279 

---

---

---

---

---

---

---

---

---

1,200 # 

11.5 

14.5 

1.1 

12.7 

0.32 

2.92 

< 0.02 

0.021 

< 0.1 

---

---

---

---

---

---

---

---

---

---

---

---

Sum cations (meq/L) 

Sum anions (meq/L) 

18.4 

16.1 

18.2 

17.2 

---

---

18.5 

17.3 

16.1 

19.5 

---

---

Charge imbalance (percent) 13.0 5.6 --- 6.53 -18.8 ---

164
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A 

Sample Date 4/17/96 8/1/96 1/31/97 6/25/97 11/7/97 5/11/98 6/11/98 

Miscellaneous information filtered filtered filtered --- --- --- 11/6/98 in MC 

DB 

Comments --- --- --- --- --- --- ---

Source ID (see table 2) MMW wkst MMW wkst MMW wkst NMED: ACZ lab MC DB, URS MC DB, URS NMED: ACZ lab 

sheet, MC DB 3/01 3/01 sheet, MC DB 

Lab ID (see table 2) --- --- --- ACZ RG 46917 --- --- ACZ RG 70725 

Depth to Water (m) 6.7 --- --- --- --- --- 9.5 

Water Elevation (ft) --- --- --- 7,915 --- --- ---

Field Temperature (o

C) 10.1 --- 8.8 --- 9.3 --- 9.4 

pH, field, [lab] 4.95 4.42 4.64 --- 4.44 --- 4.59 

Eh (V) --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,820 1,902 1,729 [1,600] 1,640 # --- 2,550 

TDS (mg/L) 1,670 # --- --- 1580, 1030 1,630 1,760 1330, 1500 

Constituent, dissolved (mg/L) 

Ca --- 300 253 280 246 256 225 

Mg 113 78 83.6 80.1 75.8 89 65.8 

Ba < 0.1 < 0.01 0.015 0.005 0.01 --- 0.007 

Na 26 33 26.4 30.5 25.3 29.7 24 

K --- 3.6 3 3 2.6 3.1 2.7 

SO4 1,260 # 1,200 1,660 # 1,090 1,020 1,090 940 

Alkalinity (as HCO3) < 1 --- --- < 2 < 2 ND < 2 

F 9.1 --- 8.93 14 14 14 14 

Cl --- 24 --- 6 21 22 18 

SiO2 --- 30 67 67 30 --- 31 

Al 19.2 35 35.2 31.3 31.6 39.1 28.1 

Fe < 0.05 0.097 0.02 0.01 0.01 0.11 < 0.01 

Mn 12.8 # 9.06 14.2 14 12.4 13.7 11.6 

Cu 0.311 0.446 0.55 0.63 0.49 0.62 0.47 

Zn 25.5 2.8 2.56 2.57 2.28 2.29 1.97 

Mo < 0.02 < 0.02 < 0.02 < 0.01 < 0.01 < 0.01 < 0.01 

Cd 0.026 0.0041 0.03 0.027 0.025 0.027 0.019 

Ag < 0.01 < 0.01 < 0.0002 < 0.0003 < 0.005 --- < 0.0005 

Cr < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 --- < 0.01 

Co 0.13 0.15 0.15 0.15 0.49 0.16 0.12 

Ni 0.28 0.32 0.33 0.34 0.28 0.34 0.27 

Pb < 0.005 --- 0.006 0.001 < 0.04 --- 0.003 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 --- < 0.0002 

Be 0.007 0.008 0.008 0.008 < 0.01 --- 0.006 

V < 0.01 < 0.01 < 0.005 < 0.005 < 0.005 --- < 0.005 

Se < 0.005 0.011 0.003 0.002 < 0.002 --- 0.003 

As < 0.01 0.01 < 0.001 < 0.005 < 0.001 --- < 0.001 

Sum cations (meq/L) --- 19.2 16.3 18.8 17.2 18.9 15.6 

Sum anions (meq/L) --- 17.6 26.1 16.3 16.0 16.6 15.0 

Charge imbalance (percent) --- 8.84 -46.0 14.3 7.38 13.2 3.93 

165
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A MMW-10A 

Sample Date 2/3/00 6/5/01 7/17/01 12/1/01 2/1/02 4/25/02 7/24/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered ---

Comments --- --- --- --- --- --- ---

Source ID (see table 2) MCDB, MMW MC CD MC CD MC CD MC CD MC CD MC CD 

wkst, RGC 8/10 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) 8.27 --- --- --- --- --- ---

Water Elevation (ft) --- 7,916 7,917 7,913 7,910 7,911 ---

Field Temperature (o

C) 8.5 --- 9.9 9.2 3.9 9.5 17.6 

pH, field, [lab] 4.31 4.72 4.45 4.19 4.24 4.16 4.15 

Eh (V) --- 0.235 0.245 0.41 0.295 0.378 0.296 

Spec Cond (PS/cm) field, [lab] 2,710 1,300 218 2,280 2,360 2,350 2,390 

TDS (mg/L) 2,800 1,100 2,200 2,200 2,200 2,200 ---

Constituent, dissolved (mg/L) 

Ca 430 180 330 330 330 370 ---

Mg 130 53 110 110 110 130 ---

Ba < 0.01 < 0.01 < 0.01 0.005 0.0072 0.0065 ---

Na 34 18 28 29 30 29 ---

K 0.48 3 4.3 4.5 4.5 5.3 ---

SO4 1,800 780 1,500 1,500 1,500 1,600 ---

Alkalinity (as HCO3) 6.7 < 5 < 5 < 5 < 5 < 5 ---

F 26 11 24 25 24 25 ---

Cl 24 15 26 27 26 27 ---

SiO2 30 24 30 32 30 32 ---

Al 64 21 52 52 53 57 ---

Fe 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 24 8.4 20 24 24 24 ---

Cu 0.88 0.33 0.76 0.76 0.79 0.81 ---

Zn 4 1.4 3.4 3.7 3.6 4.1 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.044 0.016 0.037 0.037 0.038 0.043 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 < 0.01 0.002 0.011 0.013 ---

Co 0.23 0.077 0.19 0.2 0.2 0.23 ---

Ni 0.56 0.19 0.46 0.47 0.49 0.54 ---

Pb < 0.009 < 0.003 < 0.009 < 0.009 < 0.009 < 0.009 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.013 0.0052 0.01 0.0099 0.0098 0.011 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.015 < 0.005 0.011 0.014 0.016 0.012 ---

As 0.011 < 0.005 0.0077 0.0053 0.0082 0.011 ---

Sum cations (meq/L) 28.3 12.5 22.9 23.1 23.7 26.0 ---

Sum anions (meq/L) 26.0 12.8 22.5 22.6 22.9 23.4 ---

Charge imbalance (percent) 8.30 -2.54 1.41 2.16 3.07 10.8 ---

166
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B 

Sample Date 11/7/94 11/7/94 11/7/94 11/7/94 6/1/95 4/17/96 

Miscellaneous information filtered filtered filtered filtered --- filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) Slifer 1996 Slifer 1996 SPRI 1995, MMW WC 96 MMW wkst MMW wkst 

wkst, SRK 1995, MC 

DB Lab ID (see table 2) SLD IC 94 SLD IC 94 ETC ETC --- ---

0659 6428 

Depth to Water (m) 6.58 6.58 6.57 6.57 --- 6.67 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- 10.1 10.1 --- 9.5 

pH, field, [lab] 7.5, [6.19] [6.19] 7.9 7.9 5.47 5.86 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 2050, [3060] [3,060 #] 2,250 2,250 1,860 1,870 # 

TDS (mg/L) 1,880 # 1,880 # 1,800 1,890 --- 1,750 

Constituent, dissolved (mg/L) 

Ca 410 321 347 363 [370] --- ---

Mg 88 95.1 80.3 79.4 [79.7] --- 123 # 

Ba < 0.1 --- 0.034 0.0342 J [0.0357 J] --- < 0.1 

Na --- 26 25.8 26.3 J [26.2] --- 27 

K --- 7 3.5 3.11 J [3.22] --- ---

SO4 --- 1,080 1,100 1,040 J 1,100 # 1,220 # 

Alkalinity (as HCO3) --- 18 76 52 --- 14 

F --- 13.2 12.2 --- 10 9.8 

Cl --- 22 28 29 --- ---

SiO2 27.8 --- 27.4 --- --- ---

Al 7.6 --- 8.74 7.17 [9.72] 5.5 6.6 

Fe 0.07 --- 0.101 0.122 [0.895] 0.66 < 0.05 

Mn 8.4 --- 8.55 8.34 [8.52] 8.4 7.95 

Cu 0.1 --- 0.179 0.0984 [0.125] 0.25 0.214 

Zn 1.2 --- 1.5 1.13 [1.13] 3.4 1.72 # 

Mo < 0.01 --- < 0.02 0.0293 J [0.0324 J] < 0.02 < 0.02 

Cd 0.02 --- 0.025 0.017 [0.0166] 0.024 0.028 

Ag < 0.01 --- < 0.1 < 0.0061 [<0.0061] --- < 0.01 

Cr < 0.05 --- < 0.01 < 0.0029 [0.0038 J] --- < 0.01 

Co 0.06 --- 0.074 0.0611 [0.062] --- 0.08 

Ni 0.3 --- 0.201 0.174 [0.176] --- 0.23 

Pb 0.03 --- 0.021 0.017 [0.0507] < 0.1 < 0.005 

Hg < 0.0005 --- < 0.0002 < 0.0001 [<0.0001] --- < 0.0002 

Be < 0.01 --- 0.007 0.0063 J [0.0071] --- 0.008 

V < 0.01 --- < 0.01 < 0.002 [<0.002] --- < 0.01 

Se < 0.05 --- < 0.005 < 0.0025 UJ [<0.0025 U] --- < 0.005 

As < 0.01 --- < 0.005 < 0.0024 [<0.0024] --- < 0.01 

Sum cations (meq/L) --- 19.1 18.9 19.8 --- ---

Sum anions (meq/L) --- 17.2 18.9 16.9 --- ---

Charge imbalance (percent) --- 10.5 0.36 15.8 --- ---

167
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B 

Sample Date 8/1/96 1/1/97 6/25/97 11/7/97 5/11/98 6/11/98 

Miscellaneous information filtered filtered filtered --- --- filtered; 11/6/98 in 

MC DB 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst MMW wkst NMED: ACZ lab MC DB, URS MC DB NMED: ACZ lab 

sheet, MC DB 3/01 sheet, MC DB 

Lab ID (see table 2) --- --- ACZ RG 46918 --- --- ACZ RG 70726 

Depth to Water (m) --- --- --- --- --- 9.5 

Water Elevation (ft) --- --- 7,915 --- --- ---

Field Temperature (o

C) --- 8.4 --- 9.5 --- ---

pH, field, [lab] 5.28 5.35 --- 5.36 --- ---

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,910 # 1,730 [2,000] 1,740 --- 2,640 

TDS (mg/L) --- --- 1640, 1690 1,740 1,720 1580, 1690 

Constituent, dissolved (mg/L) 

Ca 340 292 328 307 292 312 

Mg 77.3 81.2 82.5 81.4 87.1 75.9 

Ba 0.02 0.049 0.016 0.018 --- 0.016 

Na 32 26.2 30 27 29.5 26.4 

K 4.3 3.4 4 3.2 3.7 3.3 

SO4 1,100 1,830 # 1,090 1,070 1,060 1,090 

Alkalinity (as HCO3) --- --- 8 7 14 10 

F --- 11.9 14 15 14 15 

Cl 26 --- 26 26 26 25 

SiO2 30 71 74 33 --- 31 

Al 13 14.4 14.6 14.7 14.5 12.4 

Fe 0.081 0.01 0.17 0.1 0.12 0.03 

Mn 4.85 9.24 9.44 9.01 8.86 9.04 

Cu 0.406 0.56 0.61 0.51 0.5 0.4 

Zn 1.91 # 1.98 2.29 1.98 1.86 1.75 

Mo < 0.02 < 0.02 < 0.01 < 0.01 < 0.01 < 0.01 

Cd 0.0018 0.055 0.05 0.052 0.042 0.041 

Ag < 0.01 < 0.0002 < 0.0003 < 0.005 --- < 0.0005 

Cr < 0.01 < 0.01 < 0.01 < 0.01 --- < 0.01 

Co 0.1 0.1 0.11 0.1 0.11 0.09 

Ni 0.24 0.24 0.26 0.23 0.25 0.21 

Pb --- 0.074 0.048 0.05 --- 0.031 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 --- < 0.0002 

Be 0.01 0.01 0.01 0.01 --- 0.007 

V < 0.01 < 0.005 < 0.005 < 0.005 --- < 0.03 

Se < 0.005 0.002 0.001 < 0.002 --- < 0.001 

As 0.011 < 0.001 < 0.005 < 0.001 --- < 0.001 

Sum cations (meq/L) 19.6 15.7 19.5 18.5 18.4 17.9 

Sum anions (meq/L) 16.7 30.0 17.2 17.0 17.0 17.4 

Charge imbalance (percent) 15.8 -62.4 12.6 7.95 7.69 2.65 

168
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B MMW-10B 

Sample Date 2/3/00 6/5/01 7/18/01 12/1/01 2/1/02 4/25/02 7/24/02 

Miscellaneous information filtered filtered filtered filtered filtered filtered ---

Comments --- --- --- --- --- --- ---

Source ID (see table 2) MC DB, MMW MC CD MC CD MC CD MC CD MC CD MC CD 

wkst, RGC 8/10 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) 8.82 --- --- --- --- --- ---

Water Elevation (ft) --- 7,914 7,917 7,912 7,910 7,910 ---

Field Temperature (o

C) 8.7 10.1 13.7 7.8 --- 11 16.7 

pH, field, [lab] 5.3 5.63 5.8 5.86 --- 5.86 5.71 

Eh (V) --- 0.256 0.223 0.243 0.227 0.258 0.234 

Spec Cond (PS/cm) field, [lab] 2,230 2,410 2,360 2,680 [2,680] 2,700 2,630 

TDS (mg/L) 2,100 2,300 2,400 2,600 2,500 2,600 ---

Constituent, dissolved (mg/L) 

Ca 400 470 440 490 530 550 ---

Mg 99 120 120 120 130 150 ---

Ba 0.018 0.02 0.021 0.022 0.023 0.022 ---

Na 33 31 31 32 34 34 ---

K 5.3 5.4 5.5 5.6 6.2 6.8 ---

SO4 1,300 1,600 1,600 1,800 1,700 1,800 ---

Alkalinity (as HCO3) 9.3 11 25 44 52 47 ---

F 19 21 22 19 18 20 ---

Cl 24 26 23 26 25 26 ---

SiO2 32 32 28 24 24 24 ---

Al 21 23 18 12 10 12 ---

Fe < 0.1 0.13 < 0.1 0.14 < 0.1 0.12 ---

Mn 13 16 15 18 18 18 ---

Cu 0.76 0.56 0.46 0.22 0.19 0.22 ---

Zn 2.6 2.6 2.8 2.8 2.9 3.2 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.056 0.039 0.032 0.025 0.028 0.03 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 < 0.01 < 0.0011 0.00097 < 0.01 ---

Co 0.14 0.15 0.16 0.16 0.16 0.18 ---

Ni 0.34 0.36 0.39 0.37 0.38 0.42 ---

Pb 0.084 0.083 0.13 0.15 0.12 0.13 ---

Hg --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.013 0.013 0.012 0.011 0.011 0.012 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.011 < 0.005 0.0098 0.0099 0.013 0.01 ---

As 0.012 0.0099 0.017 0.02 0.023 0.019 ---

Sum cations (meq/L) 23.5 26.5 24.4 25.8 28.5 30.0 ---

Sum anions (meq/L) 19.8 23.8 24.0 27.8 25.7 26.5 ---

Charge imbalance (percent) 17.1 10.8 1.80 -7.37 10.2 12.5 ---

169
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C 

Sample Date 11/8/94 11/8/94 11/8/94 6/1/95 4/17/96 8/1/96 

Miscellaneous information filtered filtered filtered --- filtered filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) Slifer 1996 SPRI 1995, SRK Slifer 1996 MMW wkst MMW wkst MMW wkst 

1995, MC DB, MMW 

kt Lab ID (see table 2) SLD IC-94 ETC SLD IC-94 --- --- ---

0655 6424 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

6.64 

4.7 

1,020 

1,690 

---

---

---

6.64 

11.8 

4.7 

2,000 

1,400 

---

---

6.64 

[4.53] 

[1,560 #] 

1,690 

---

---

---

---

---

---

4.27 

1,730 # 

---

---

6.84 

9.4 

4.9 

1,640 

1,520 

---

---

---

---

---

4.56 

1,530 # 

---

---

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

230 

82 

< 0.1 

---

---

204 

75.2 

0.014 

20.2 

2.8 

193 # 

76.1 

25 

12 

---

---

---

---

---

---

---

1190 

< 0.1 

20 

---

210 

197 

0.01 

25 

3.7 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

---

< 3 

20 

30 

< 0.1 

15 

0.37 

2.6 

< 0.01 

0.025 

< 0.01 

0.035 

0.09 

0.31 

< 0.01 

< 0.0005 

< 0.01 

< 0.05 

< 0.025 

< 0.01 

---

---

880 

< 1 

15.4 

20 

21 

31.1 

< 0.05 

16.3 

0.38 

3.2 

< 0.02 

0.026 

< 0.1 

< 0.01 

0.106 

0.0347 

< 0.002 

< 0.0002 

0.007 

< 0.01 

< 0.005 

< 0.005 

849 

< 3 

17.8 

15 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

962 

11.9 

27.3 

0.9 

17.2 

0.46 

5.2 

< 0.02 

0.03 

< 0.1 

---

---

---

---

---

---

---

---

---

---

---

---

1,090 # 

< 1 

16.5 

29.3 

< 0.05 

15.8 # 

0.386 

3.1 

< 0.02 

0.037 

< 0.01 

< 0.01 

0.09 

0.3 

< 0.005 

< 0.0002 

0.008 

< 0.01 

< 0.005 

< 0.01 

---

---

850 

16 

21.4 

30.9 

< 0.05 

8.96 

0.228 

2.01 

< 0.02 

0.0043 

< 0.01 

< 0.01 

0.09 

0.32 

< 0.0002 

0.007 

< 0.01 

0.011 

0.009 

---

---

---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

15.6 

13.8 

15.7 

13.5 

---

---

---

---

25.1 

11.5 

Charge imbalance (percent) --- 12.2 15.5 --- --- 74.5 

170
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C 

Sample Date 1/1/97 6/25/97 11/7/97 5/11/98 6/11/98 2/3/00 

Miscellaneous information filtered --- --- --- 11/6/98 in MC DB filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst NMED: ACZ lab MC DB, URS MC DB, URS NMED:ACZ lab MC DB, MMW 

sheet, MC DB 3/01 3/01 sheet, MC DB wkst, RGC 8/10 

Lab ID (see table 2) --- ACZ RG 46919 --- --- ACZ RG 70727 Paragon 

Analytics 

Depth to Water (m) --- --- --- --- 9.5 8.32 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- 9 --- --- 8 

pH, field, [lab] 4.98 --- 4.75 --- --- 4.81 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,040 # [1,200] 888 --- 1,080 1,190 

TDS (mg/L) --- 710, 760 780 850 455, 500 990 

Constituent, dissolved (mg/L) 

Ca 132 128 117 124 76 130 

Mg 45.5 41.2 40.6 52.1 22.9 54 

Ba 0.013 0.008 0.016 --- 0.007 0.011 

Na 14.9 15 13.3 14.8 9.5 15 

K 2.5 < 8 2 2.2 1.5 2.8 

SO4 962 470 460 570 320 620 

Alkalinity (as HCO3) --- 2 4 4 10 8 

F 9.6 8 10 10 5.9 13 

Cl --- 10 9 14 8 13 

SiO2 41.1 37 17 --- 14 18 

Al 18.5 12.2 13.6 16.2 6.87 19 

Fe 0.01 < 0.01 0.02 0.01 < 0.01 0.1 

Mn 7.36 5.63 5.51 7.5 2.35 9.8 

Cu 0.24 < 0.3 0.16 0.2 0.09 0.24 

Zn 2.03 1.57 1.42 1.56 0.74 2.2 

Mo < 0.02 < 0.01 < 0.01 < 0.01 < 0.01 < 0.1 

Cd 0.017 0.012 0.013 0.011 0.005 0.018 

Ag < 0.0002 < 0.0005 < 0.03 --- < 0.0005 < 0.002 

Cr 0.01 < 0.01 < 0.01 --- < 0.01 < 0.01 

Co 0.05 0.03 0.04 0.05 0.01 0.066 

Ni 0.18 0.15 0.14 0.18 0.06 0.23 

Pb 0.001 < 0.001 < 0.04 --- < 0.001 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 --- < 0.0002 < 0.0002 

Be 0.0049 0.004 0.01 --- 0.002 0.0051 

V < 0.005 < 0.005 < 0.005 --- < 0.005 < 0.01 

Se 0.002 < 0.001 < 0.002 --- < 0.001 0.0095 

As < 0.001 < 0.005 < 0.001 --- < 0.001 < 0.005 

Sum cations (meq/L) 9.30 9.52 9.11 10.2 5.67 10.8 

Sum anions (meq/L) 16.4 7.99 7.94 9.76 6.02 10.6 

Charge imbalance (percent) -55.2 17.4 13.7 4.72 -5.97 1.24 

171
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C MMW-10C 

Sample Date 6/5/01 7/18/01 12/1/01 2/1/02 4/25/02 7/24/02 

Miscellaneous information filtered filtered filtered filtered filtered ---

Comments *Alkalinity value --- *Alkalinity value *Alkalinity value --- ---

probably near 5 probably near 5 probably near 5 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Paragon 

Analytics Analytics 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 7,911 7,917 7,910 7,910 7,910 ---

Field Temperature (o

C) 9.3 17.8 9 6.6 14.2 20.6 

pH, field, [lab] 4.91 4.72 4.66 4.8 4.77 4.57 

Eh (V) 0.256 0.281 0.35 0.252 0.314 0.301 

Spec Cond (PS/cm) field, [lab] 1,240 # 1,180 # 1,260 # 1,100 # 1,080 # 1,330 # 

TDS (mg/L) 1,000 1,000 1,000 860 840 ---

Constituent, dissolved (mg/L) 

Ca 160 150 140 130 120 ---

Mg 67 69 65 57 50 ---

Ba 0.011 < 0.01 0.012 < 0.01 0.0093 ---

Na 16 17 17 17 15 ---

K 3.1 3.3 3.1 3.2 2.7 ---

SO4 730 690 690 600 600 ---

Alkalinity (as HCO3) < 5* 5.1 < 5 * < 5 * 5.4 ---

F 14 15 15 12 11 ---

Cl 14 13 15 13 13 ---

SiO2 18 18 19 19 17 ---

Al 20 21 21 17 16 ---

Fe < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Mn 11 11 11 8.7 7.8 ---

Cu 0.27 0.28 0.28 0.22 0.21 ---

Zn 2.4 2.7 2.5 2.2 1.8 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.021 0.023 0.02 0.018 0.016 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 0.0023 0.001 < 0.01 ---

Co 0.069 0.078 0.067 0.053 0.051 ---

Ni 0.24 0.26 0.24 0.2 0.19 ---

Pb < 0.006 < 0.006 < 0.006 < 0.003 < 0.003 ---

Hg < 0.0002 < 0.0003 < 0.0004 < 0.0002 < 0.0002 ---

Be 0.0049 0.0053 0.0047 0.0043 0.0038 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se < 0.005 0.008 0.012 0.0086 0.0055 ---

As < 0.005 < 0.005 0.003 < 0.005 < 0.005 ---

Sum cations (meq/L) 12.7 12.4 12.0 11.0 9.69 ---

Sum anions (meq/L) 12.0 11.1 11.6 10.3 10.2 ---

Charge imbalance (percent) 5.38 10.5 2.93 6.85 -5.58 ---

172
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 

Sample Date 11/7/94 11/7/94 11/7/94 11/7/94 

Miscellaneous information filtered filtered DUPLICATE filtered filtered 

Comments analyzed on --- --- ---

2/21/95 

Source ID (see table 2) Slilfer 1996 WC 96 SPRI '95, SRK '95, MC WC 96 

DB, MMW wkst, URS 

Lab ID (see table 2) SLD WC-94 ETC ETC ETC 

6440 

Depth to Water (m) 27.3 26.4 26.4 26.4 

Water Elevation (ft) --- --- --- ---

Field Temperature (o

C) --- 9.4 15.7 9.4 

pH, field, [lab] [4.43] 5.6 5.6 ---

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] [1,990 #] 2,110 2,450 2,110 

TDS (mg/L) 2120 # 2,160 2,000 2,120 

Constituent, dissolved (mg/L) 

Ca 229 252 [258] 276 255 [258] 

Mg 105 # 117 [120] 133 117 [119] 

Ba --- 0.0157 J [0.015 J] 0.016 0.0158 J [0.0149 J] 

Na 34 26 J [26.5] 25.5 26.1 J [27] 

K 20 3.22 J [3.36] 3.4 3.2 J [3.27] 

SO4 1270 # 1210 J 1,300 1180 J 

Alkalinity (as HCO3) 156 < 5 < 1 < 5 

F 21 --- 17.6 ---

Cl 36 25 22 26 

SiO2 --- --- 30 ---

Al --- 55.9 [58.3] 56.3 56.8 [57.8] 

Fe --- 0.0542 U [0.0631 J] 0.129 0.0603 J [0.0563 J] 

Mn --- 27.6 [28.3] 31.7 27.9 [28.1] 

Cu --- 0.824 [0.837] 0.919 0.825 [0.844] 

Zn --- 4.36 [4.44] 5 4.36 [4.48] 

Mo --- 0.0583 J [0.0633 J] < 0.02 0.0615 J [0.0616 J] 

Cd --- 0.0319 [0.0328] 0.036 0.0318 [0.0326] 

Ag --- < 0.0061 [<0.0061] < 0.1 < 0.0061 [<0.0061] 

Cr --- 0.0054 J [0.006 J] 0.036 0.0044 J [0.0053 J] 

Co --- 0.238 [0.24] 0.266 0.235 [0.243] 

Ni --- 0.539 [0.549] 0.593 0.54 [0.554] 

Pb [< 0.1] 0.0059 [0.0114] 0.086 0.0109 [0.0116] 

Hg --- < 0.0001 [<0.0001] < 0.0002 < 0.0001 [<0.0001] 

Be --- 0.0129 [0.0133] 0.013 0.0131 [0.0133] 

V --- < 0.002 [<0.002] < 0.01 < 0.002 [<0.002] 

Se --- < 0.0025 UJ [<0.0025 UJ] < 0.005 < 0.0025 UJ [<0.0025 UJ] 

As --- < 0.0024 [<0.0024] < 0.005 < 0.0024 [<0.0024] 

Sum cations (meq/L) 

Sum anions (meq/L) 

20.4 

22.5 

21.7 

17.2 

23.1 

18.6 

22.1 

16.4 

Charge imbalance (percent) -9.39 22.9 21.2 29.7 

173
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 MMW-11

Sample Date 11/7/94 6/1/95 4/17/96 8/1/96 1/1/97 6/25/97

Miscellaneous information filtered; analyzed 

5/17/95 

--- filtered filtered filtered ---

Comments *1 SO4 =1267/ --- --- --- --- ---

1287, *2 Ag < 0.01/ 

0 04 Source ID (see table 2) Slilfer 1996 MMW wkst MMW wkst MMW wkst MMW wkst NMED: ACZ lab 

sheet, MC DB, URS 

Lab ID (see table 2) SLD IC-94 0639 --- --- --- --- ACZ RG 46920 

Depth to Water (m) 27.3 --- 27.3 --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- 11.4 --- 9.7 ---

pH, field, [lab] 5.6 4.26 4.38 4.22 4.56 ---

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,490 2,120 9,330 1,990 1,840 [1,500] 

TDS (mg/L) 2,120 --- 2,190 # --- --- 1900, 1970 

Constituent, dissolved (mg/L) 

Ca 260 --- --- 250 221 251 

Mg 110 --- 126 # 117 # 110 129 

Ba < 0.1 --- < 0.1 0.01 0.015 0.013 

Na --- --- 26 31 24.2 27.4 

K --- --- --- 4 3.5 4 

SO4 1270 # *1 1280 # 1440 # 1,300 1780 # 1,320 

Alkalinity (as HCO3) --- --- < 1 --- --- < 2 

F --- 21.5 18.8 --- 15.4 21 

Cl --- --- --- 20 --- 22 

SiO2 25.7 --- --- 28 61 67 

Al 54 35.4 51.8 51 51.1 56.8 

Fe < 0.1 0.3 < 0.05 < 0.05 0.01 < 0.01 

Mn 28 29.1 29.7 13.4 11 29.9 

Cu 0.8 0.9 0.88 0.69 0.81 0.98 

Zn 4.6 4.7 4.8 8.79 4.8 5.49 

Mo < 0.01 < 0.02 < 0.02 < 0.02 < 0.02 < 0.01 

Cd < 0.10 0.033 0.043 0.022 0.039 0.037 

Ag < 0.01 *2 --- < 0.01 < 0.01 < 0.002 < 0.0005 

Cr < 0.1 --- < 0.01 < 0.01 < 0.01 < 0.01 

Co 0.25 --- 0.23 0.22 0.23 0.28 

Ni 0.6 --- 0.52 0.51 0.53 0.67 

Pb < 0.1 < 0.1 < 0.005 --- 0.011 0.011 

Hg < 0.0005 --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.01 --- 0.015 0.013 0.014 0.015 

V < 0.05 --- < 0.01 < 0.01 < 0.005 < 0.005 

Se < 0.005 --- 0.012 0.016 0.003 0.002 

As < 0.01 --- < 0.01 0.006 < 0.001 < 0.005 

Sum cations (meq/L) 22.0 --- --- 20.8 17.3 22.3 

Sum anions (meq/L) 22.1 --- --- 18.3 27.7 19.5 

Charge imbalance (percent) -0.44 --- --- 12.6 -46.1 13.5 

174
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 

Sample Date 11/7/97 5/11/98 6/9/98 2/3/00 6/22/01 

Miscellaneous information --- --- 9/6/98 in MC DB URS 3/01 calls this well filtered 

MMW-11A (2/00) 

Comments --- --- --- --- ---

Source ID (see table 2) MC DB, URS MC DB, URS NMED: ACZ lab sheet, MC DB, MMW wkst, MC CD 

3/01 3/01 MC DB, URS RGC 8/10, URS 

Lab ID (see table 2) --- --- ACZ RG 70644 Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- 30 28.8 ---

Water Elevation (ft) --- --- --- --- 7,916 

Field Temperature (o

C) 10 --- 10.4 9.4 11.1 

pH, field, [lab] 4.14 --- 4.19 4.34 4.22 

Eh (V) --- --- --- --- 0.245 

Spec Cond (PS/cm) field, [lab] 2,200 --- 2,600 2,990 2,490 

TDS (mg/L) 2,420 3,030 2460, 2530 3,200 2,700 

Constituent, dissolved (mg/L) 

Ca 282 307 277 320 320 

Mg 149 203 149 190 210 

Ba 0.019 --- 0.016 0.017 0.014 

Na 29.1 35 28.7 34 32 

K 3.5 4 3.5 5.3 5.4 

SO4 1,560 2,090 1,690 2,100 1,900 

Alkalinity (as HCO3) < 2 ND < 2 15 < 5 

F 30 37 35 41 36 

Cl 25 24 25 29 30 

SiO2 28 --- 29 30 28 

Al 77.4 109 81.2 90 83 

Fe < 0.02 ND < 0.01 < 0.1 0.13 

Mn 33.4 42.8 35.4 49 47 

Cu 1.12 1.54 1.14 1.4 1.3 

Zn 6.2 8.74 6.75 8.6 9.4 

Mo < 0.02 ND < 0.01 < 0.1 < 0.1 

Cd 0.052 ND 0.05 0.06 0.061 

Ag --- --- < 0.0005 < 0.002 < 0.002 

Cr < 0.02 --- < 0.01 < 0.01 < 0.01 

Co 0.31 0.47 0.32 0.42 0.39 

Ni 0.7 1.03 0.75 1 0.97 

Pb < 0.08 --- 0.011 < 0.03 < 0.015 

Hg < 0.0002 --- < 0.0002 --- < 0.0002 

Be < 0.02 --- 0.016 0.02 0.018 

V < 0.01 --- < 0.03 < 0.01 < 0.01 

Se 0.003 --- 0.003 0.29 0.019 

As < 0.001 --- < 0.001 0.012 0.0064 

Sum cations (meq/L) 25.6 30.9 25.2 29.4 30.7 

Sum anions (meq/L) 22.5 29.2 24.8 30.9 26.9 

Charge imbalance (percent) 12.9 5.66 1.47 -5.11 13.5 

175
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-11 MMW-11 MMW-11 MMW-11 MMW-11 

Sample Date 9/10/01 10/27/01 2/6/02 4/30/02 8/7/02 

Miscellaneous information filtered filtered filtered filtered ---

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,914 7,913 7,908 7,908 ---

Field Temperature (o

C) 20.8 14 10.7 16.4 18.9 

pH, field, [lab] 5.64 4.58 4.77 4.4 6.52 

Eh (V) 0.273 0.344 0.303 0.35 0.244 

Spec Cond (PS/cm) field, [lab] 2,610 2,800 2,670 2,640 2,930 

TDS (mg/L) 2,800 2,800 2,600 2,500 ---

Constituent, dissolved (mg/L) 

Ca 330 300 340 290 ---

Mg 160 200 180 180 ---

Ba 0.03 0.036 0.027 0.016 ---

Na 28 32 37 32 ---

K 5.3 5.5 7.1 6.1 ---

SO4 1,900 1,900 1,900 1,900 ---

Alkalinity (as HCO3) 6.4 < 5 6.2 5 ---

F 27 36 33 36 ---

Cl 29 29 27 27 ---

SiO2 19 28 26 28 ---

Al 36 77 54 71 ---

Fe 0.1 < 0.1 < 0.1 0.024 ---

Mn 37 43 39 43 ---

Cu 0.7 1.2 0.88 1.1 ---

Zn 5.8 7.7 6.6 7.2 ---

Mo < 0.1 0.025 0.037 < 0.1 ---

Cd 0.045 0.056 0.048 0.054 ---

Ag < 0.002 < 0.002 0.0012 < 0.002 ---

Cr < 0.01 0.0066 0.0032 0.0032 ---

Co 0.27 0.38 0.31 0.35 ---

Ni 0.59 0.89 0.76 0.85 ---

Pb < 0.015 < 0.015 < 0.015 0.011 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be 0.0078 0.015 0.011 0.014 ---

V < 0.01 < 0.01 < 0.01 < 0.01 ---

Se 0.018 0.023 0.028 0.025 ---

As 0.007 0.0062 0.01 0.0057 ---

Sum cations (meq/L) 22.8 28.3 27.4 25.9 ---

Sum anions (meq/L) 28.4 27.2 28.3 27.6 ---

Charge imbalance (percent) -21.8 4.12 -3.24 -6.26 ---

176
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-11A MMW-11A MMW-11A MMW-11A MMW-11A MMW-11A 

Sample Date 1/12/00 6/22/01 9/10/01 10/27/01 2/6/02 4/30/02 

Miscellaneous information URS calls this MMW- filtered filtered filtered filtered filtered 

11 (1/00) 

Comments --- --- --- --- --- ---

Source ID (see table 2) MC DB, MMW wkst, MC CD MC CD MC CD MC CD MC CD 

RGC 8/10, URS 

Lab ID (see table 2) Paragon Analytics Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) 28.4 --- --- --- --- ---

Water Elevation (ft) --- 7,914 7,912 7,911 --- 7,907 

Field Temperature (o

C) 9.4 10.8 20.3 14.9 9.7 16.3 

pH, field, [lab] 4.31 4.3 4.09 4.15 4.26 4.19 

Eh (V) --- 0.247 0.323 0.342 0.295 0.269 

Spec Cond (PS/cm) field, [lab] 2,950 2,470 2,590 2,730 2,570 2,600 

TDS (mg/L) 3,200 2,700 2,900 2,700 2,600 2,500 

Constituent, dissolved (mg/L) 

Ca 300 290 250 240 250 230 

Mg 210 210 190 200 200 190 

Ba 0.014 0.014 < 0.01 0.011 < 0.01 0.011 

Na 38 32 31 31 36 31 

K 5.7 5.5 5.2 5.4 5.5 6 

SO4 2,100 1,900 1,900 1,900 1,800 1,800 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 < 5 

F 46 37 38 43 41 38 

Cl 29 26 29 28 26 25 

SiO2 30 30 28 28 32 30 

Al 100 84 90 90 84 83 

Fe < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 0.32 

Mn 52 48 47 45 44 45 

Cu 1.5 1.3 1.3 1.3 1.3 1.3 

Zn 9.7 9.8 8.4 8.4 8.4 # 8.1 

Mo < 0.1 < 0.1 < 0.1 < 0.1 0.033 < 0.1 

Cd 0.066 0.061 0.058 0.057 0.055 0.057 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 0.0079 0.0069 0.032 

Co 0.48 0.39 0.37 0.39 0.38 0.38 

Ni 1.1 0.98 0.86 0.93 0.89 0.94 

Pb < 0.03 < 0.015 0.03 < 0.015 < 0.015 0.01 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.0002 

Be 0.022 0.019 0.018 0.019 0.018 0.017 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.028 0.021 0.018 0.023 0.026 0.027 

As 0.013 0.0067 0.0078 0.0088 0.0079 0.0058 

Sum cations (meq/L) 30.9 29.7 26.1 26.8 28.0 25.6 

Sum anions (meq/L) 30.3 27.1 26.7 27.4 26.3 25.8 

Charge imbalance (percent) 1.80 9.10 -2.32 -2.26 5.98 -1.07 

177
--- --- --- --- --- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-18A MMW-18B MMW-18B MMW-18B MMW-18B MMW-18B MMW-18B 

Sample Date 1/13/00 1/13/00 6/18/01 9/9/01 11/1/01 2/4/02 5/13/02 

Miscellaneous information DRY filtered --- filtered filtered filtered filtered 

Comments ---

Source ID (see table 2) MMW wkst 

Lab ID (see table 2) --- Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- 26 --- --- --- --- ---

Water Elevation (ft) --- --- 7,931 7,930 7,930 7,930 7,930 

Field Temperature (o

C) --- 11.8 27.3 18.5 14.3 7.9 13.6 

pH, field, [lab] --- 6.49 5.43 6.46 6.48 6.62 6.54 

Eh (V) --- --- 0.246 0.14 0.172 0.164 0.315 

Spec Cond (PS/cm) field, [lab] --- 3,550 2,860 3,190 3,100 3,110 3,080 

TDS (mg/L) --- 3,600 --- 3,100 3,000 3,000 2,900 

MC DB, MMW MC CD MC CD MC CD MC CD MC CD 

wkst, RGC 8/10 

Constituent, dissolved (mg/L) 

Ca --- 630 --- 590 660 610 560 

Mg --- 160 --- 150 140 150 140 

Ba --- 0.02 --- 0.02 0.01 0.013 0.014 

Na --- 99 --- 96 83 91 73 

K --- 8.6 --- 8.4 8.3 9.5 8.8 

SO4 --- 2,000 --- 1,800 1,800 1,800 1,900 

Alkalinity (as HCO3) --- 330 --- 310 310 270 270 

F --- 4.1 --- 4.4 6.5 7 6.8 

Cl --- 50 --- 14 5.9 5.8 4.5 

SiO2 --- 23.5 --- 23.5 21.2 21.4 19.3 

Al --- 0.52 --- 0.35 0.11 0.11 0.1 

Fe --- 0.23 --- < 0.1 < 0.1 < 0.1 < 0.1 

Mn --- 25 --- 20 17 14 13 

Cu --- 0.023 --- < 0.01 < 0.01 0.012 0.022 

Zn --- 14 --- 13 17 16 14 

Mo --- < 0.1 --- < 0.1 < 0.1 0.035 0.1 

Cd --- 0.082 --- 0.06 0.07 0.08 0.086 

Ag --- 0.0048 --- < 0.002 < 0.0012 < 0.002 < 0.002 

Cr --- < 0.01 --- < 0.01 < 0.0014 0.0048 < 0.01 

Co --- 0.017 --- < 0.01 0.006 0.0019 0.0022 

Ni --- 0.073 --- 0.04 0.04 0.047 0.032 

Pb --- 0.03 --- 0.006 < 0.01 < 0.01 0.013 

Hg --- --- --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be --- 0.0053 --- 0.0048 0.0065 0.0069 0.0051 

V --- < 0.01 --- < 0.01 < 0.01 < 0.01 < 0.01 

Se --- 0.01 --- 0.006 0.01 0.01 0.015 

As --- < 0.005 --- < 0.005 < 0.0025 < 0.005 < 0.005 

Sum cations (meq/L) --- 35.9 --- 33.5 35.5 35.1 30.4 

Sum anions (meq/L) --- 34.0 --- 29.3 29.1 29.5 31.1 

Charge imbalance (percent) --- 5.36 --- 13.3 19.8 17.3 -2.3 

178
---

--- --- --- --- ---

--- ---

--- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-19A MMW-19A MMW-19A MMW-19A MMW-19A MMW-19A MMW-19B 

Sample Date 1/13/00 6/22/01 9/10/01 11/1/01 2/6/02 4/30/02 1/20/00 

Miscellaneous information URS calls this filtered filtered filtered filtered filtered filtered 

MMW-11 (1-00) 

Comments --- --- --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

MC DB, MMW 

wkst, RGC 8/10 

Paragon 

Analytics 

MC CD 

Paragon 

Analytics 

MC CD 

Paragon 

Analytics 

MC CD 

Paragon 

Analytics 

MC CD 

Paragon 

Analytics 

MC CD 

Paragon 

Analytics 

MC DB, MMW 

wkst, RGC 8/10 

Paragon

Analytics

25.5 

9.7 

7.14 

2,630 

2,500 

570 

89 

0.039 

56 

8.7 

1,500

210

2.1

8.4

18.4

< 0.1

3.4

6.3

< 0.1

0.18

0.16

< 0.001

0.0041

< 0.01

< 0.1 [<0.1]

< 0.02

< 0.006

< 0.0002

< 0.004

< 0.01

< 0.005 

< 0.005 

28.4 

24.6 

14.1 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

26.5 

9.9 

4.25 

2,940 

3,200 

7,907 

11.1 

4.16 

0.25 

2,630 

2,700 

7,905 

16.9 

4.15 

0.297 

2,580 

2,800 

7,904 

14.4 

4.46 

0.291 

2,490 

2,600 

7,900 

10.9 

4.17 

0.341 

2,510 

2,300 

7,900 

11 

4.1 

0.39 

2,590 

2,500 

Constituent, dissolved (mg/L) 

Ca 310 250 250 280 250 240 

Mg 210 180 190 200 200 200 

Ba < 0.01 < 0.01 < 0.01 0.03 < 0.01 0.0075 

Na 37 32 31 31 35 32 

K 5.4 5.2 5.2 5.4 5.6 5.9 

SO4 2,100 1,900 1,900 1,900 1,800 1,800 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 < 5 

F 51 43 39 38 41 38 

Cl 29 28 29 32 27 25 

SiO2 27.8 27.8 27.8 27.8 30 27.8 

Al 98 86 87 87 83 82 

Fe 0.12 < 0.1 < 0.1 < 0.1 < 0.1 0.021 

Mn 50 48 45 47 43 44 

Cu 4.5 1.3 1.3 1.5 1.3 1.3 

Zn 9.4 8.1 8.3 9 8.3 8.3 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd 0.067 0.05 0.05 0.06 0.055 0.058 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 0.0026 0.0053 0.0061 

Co 0.47 0.37 0.37 0.38 0.37 0.38 

Ni 1.1 0.88 0.85 0.95 0.89 0.93 

Pb < 0.03 < 0.01 0.03 0.03 < 0.015 < 0.015 

Hg --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.21 0.01 0.01 0.01 0.018 0.017 

V --- < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.027 0.02 0.02 0.02 0.023 0.029 

As 0.012 0.008 0.008 0.01 0.0066 0.0066 

Sum cations (meq/L) 

Sum anions (meq/L) 

31.0 

30.5 

26.2 

28.3 

26.1 

27.2 

28.3 

27.1 

27.7 

26.3 

27.2 

26.2 

Charge imbalance (percent) 1.77 -7.60 -4.11 4.46 5.29 3.62 

179
--- --- --- --- --- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-26A MMW-27A MMW-27A MMW-27A MMW-27A MMW-27A MMW-27A 

Sample Date 1/18/00 1/12/00 6/18/01 9/9/01 10/28/01 2/6/02 5/13/02 

Miscellaneous information DRY MC DB sources filtered filtered filtered filtered filtered 

S&M 

Comments no aquifer 

information 

Source ID (see table 2) MMW wkst 

Lab ID (see table 2) --- Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- 29.1 --- --- --- --- ---

Water Elevation (ft) --- --- 7,916 7,912 7,910 7,910 7,907 

Field Temperature (o

C) --- 9.8 11.1 13.4 11.7 14 17.4 

pH, field, [lab] --- 4.33 4.22 4.17 4.12 4.2 4.14 

Eh (V) --- --- 0.232 0.33 0.297 0.28 0.303 

Spec Cond (PS/cm) field, [lab] --- 2,940 2,500 2,530 2,780 2,550 2,570 

TDS (mg/L) --- 3,300 2,600 2,800 2,700 2,400 2,600 

MCDB, MMW MC CD MC CD MC CD MC CD MC CD 

wkst, RGC 8/10 

Constituent, dissolved (mg/L) 

Ca --- 320 290 260 260 260 240 

Mg --- 220 200 190 200 200 190 

Ba --- 0.014 < 0.01 < 0.01 < 0.01 < 0.01 0.011 

Na --- 38 31 32 32 36 30 

K --- 5.6 5.9 5.4 5.5 5.8 5.8 

SO4 --- 2,100 1,900 1,900 1,900 1,900 1,800 

Alkalinity (as HCO3) --- < 5 < 5 < 5 < 5 < 5 < 5 

F --- 54 40 42 40 40 38 

Cl --- 29 29 28 29 26 25 

SiO2 --- 27.8 27.8 27.8 27.8 30 27.8 

Al --- 92 88 88 88 81 74 

Fe --- 0.1 0.16 0.11 0.1 0.15 0.14 

Mn --- 49 46 45 44 43 43 

Cu --- 1.5 1.5 1.3 1.3 1.3 1.2 

Zn --- 9.7 8.6 8 8.5 8.2 8.4 

Mo --- < 0.01 < 0.1 < 0.1 0.02 0.036 < 0.1 

Cd --- 0.068 0.06 0.05 0.05 0.055 0.055 

Ag --- < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr --- < 0.01 < 0.01 < 0.01 0.0079 0.034 0.03 

Co --- 0.47 0.4 0.35 0.39 0.37 0.35 

Ni --- 1.1 0.97 0.88 0.95 0.9 0.9 

Pb --- < 0.03 < 0.03 < 0.01 < 0.01 0.015 0.0075 

Hg --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be --- 0.022 0.02 0.01 0.01 0.018 0.018 

V --- < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se --- 0.029 0.01 0.02 0.02 0.026 0.028 

As --- 0.014 0.006 0.008 0.0085 0.0067 0.0043 

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

---

---

---

31.5 

30.6 

3.07 

29.1 

27.3 

6.55 

27.0 

27.6 

-2.12 

27.9 

27.5 

1.17 

27.2 

27.5 

-0.95 

25.1 

26.0 

-3.45 

180
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South "Old Mine Site" 

Well ID MMW-31A MMW-31A MMW-31A MMW-31A MMW-31A 

Sample Date 6/20/01 9/6/01 12/3/01 1/30/02 4/23/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,919 7,918 7,915 7,912 7,912 

Field Temperature (o

C) 12 17.1 12.4 8.9 15 

pH, field, [lab] 4.2 4.18 4.17 4.59 4.13 

Eh (V) 0.258 0.364 0.387 0.235 0.237 

Spec Cond (PS/cm) field, [lab] 2,310 2,470 2,640 2,590 2,640 

TDS (mg/L) 2,400 2,600 2,700 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 260 250 260 230 240 

Mg 190 200 200 180 200 

Ba < 0.01 < 0.01 < 0.01 0.047 0.01 

Na 28 30 32 34 34 

K 6 5.6 5.9 5.7 5.9 

SO4 1,700 1,800 1,900 1,700 1,900 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 38 41 42 36 40 

Cl 26 28 27 25 26 

SiO2 27.8 27.8 30 32.1 30 

Al 77 83 80 73 80 

Fe < 0.1 0.12 < 0.1 < 0.1 0.044 

Mn 41 44 47 44 41 

Cu 1.3 1.4 1.3 1.1 1.3 

Zn 8.3 8.5 8.7 7.8 8.9 

Mo < 0.1 < 0.1 < 0.1 0.028 < 0.1 

Cd 0.06 0.06 0.05 0.053 0.06 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 0.02 0.0054 0.0019 0.012 

Co 0.37 0.36 0.36 0.38 0.38 

Ni 0.92 0.99 0.94 0.91 0.98 

Pb < 0.03 < 0.03 < 0.01 < 0.015 0.018 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.02 0.02 0.02 0.017 0.021 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.01 0.01 0.02 0.029 0.026 

As < 0.005 0.0056 0.0066 0.0091 0.0058 

Sum cations (meq/L) 26.9 26.8 27.3 25.4 26.2 

Sum anions (meq/L) 24.6 25.6 27.8 25.5 27.6 

Charge imbalance (percent) 9.05 4.70 -1.84 -0.13 -5.53 

181
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South "Old Mine Site" 

Well ID MMW-31B MMW-31B MMW-31B MMW-31B MMW-31B 

Sample Date 6/20/01 9/6/01 12/3/01 1/30/02 4/23/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,920 7,918 7,915 7,916 7,912 

Field Temperature (o

C) 11.1 17.8 12.1 6.8 16.9 

pH, field, [lab] 4.03 4.09 4.07 4.13 4.03 

Eh (V) 0.272 0.383 0.412 0.311 0.284 

Spec Cond (PS/cm) field, [lab] 2,750 2,530 2,840 2,780 2,720 

TDS (mg/L) 2,900 3,000 2,800 2,700 2,700 

Constituent, dissolved (mg/L) 

Ca 310 290 300 280 230 

Mg 220 220 220 200 180 

Ba 0.02 0.02 0.02 0.022 0.019 

Na 31 31 33 36 33 

K 6.3 5.5 5.9 5.8 5.2 

SO4 2,000 2,000 2,200 1,900 2,000 

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 < 5 

F 42 43 43 40 39 

Cl 30 29 33 27 27 

SiO2 27.8 27.8 32.1 32.1 27.8 

Al 96 95 94 87 77 

Fe < 0.1 < 0.1 < 0.1 < 0.1 0.041 

Mn 50 51 49 48 44 

Cu 1.3 1.3 1.3 1.2 1.1 

Zn 9.3 9.1 9.2 8.5 7.7 

Mo < 0.1 < 0.1 < 0.02 < 0.01 < 0.1 

Cd 0.06 0.06 0.06 0.062 0.053 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.1 < 0.1 < 0.00095 0.0037 0.006 

Co 0.45 0.42 0.41 0.42 0.36 

Ni 1 1 0.99 0.97 0.88 

Pb 0.09 0.1 0.08 0.11 0.091 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.01 0.01 0.01 0.017 0.015 

V < 0.1 < 0.1 < 0.1 < 0.01 < 0.01 

Se 0.02 0.02 0.02 0.036 0.026 

As 0.0085 0.0075 0.0077 0.015 0.0073 

Sum cations (meq/L) 31.6 29.8 30.1 29.5 23.8 

Sum anions (meq/L) 28.2 27.6 31.7 27.9 29.8 

Charge imbalance (percent) 11.4 7.83 -5.21 5.54 -22.4 

182
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-32A MMW-32A MMW-32A MMW-32A MMW-32A 

Sample Date 6/18/01 9/9/01 11/2/01 2/2/02 4/24/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,872 7,867 7,865 7,859 7,860 

Field Temperature (o

C) 11.7 18.7 14.1 7.3 9.1 

pH, field, [lab] 4.55 4.62 4.8 4.64 4.44 

Eh (V) 0.212 0.278 0.238 0.29 0.294 

Spec Cond (PS/cm) field, [lab] 2,710 2,530 2,540 2,600 2,540 

TDS (mg/L) 2,700 2,800 2,700 2,500 2,500 

Constituent, dissolved (mg/L) 

Ca 360 320 360 320 240 

Mg 220 190 210 210 190 

Ba < 0.01 < 0.01 0.0086 0.0072 0.0075 

Na 34 37 34 36 31 

K 6.4 5.5 6.1 6 5.5 

SO4 2,000 1,800 1,900 1,800 1,800 

Alkalinity (as HCO3) < 5 6.7 7.7 < 5 6.5 

F 36 39 39 34 35 

Cl 27 29 30 26 25 

SiO2 30 30 28 28 30 

Al 83 66 67 72 74 

Fe < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Mn 45 41 45 44 42 

Cu 1.1 1 1.1 1.1 1.1 

Zn 8.2 6.2 8 8 7 

Mo < 0.1 < 0.1 < 0.1 0.044 < 0.1 

Cd 0.06 0.04 0.05 0.055 0.05 

Ag < 0.002 < 0.002 < 0.002 < 0.002 0.00086 

Cr < 0.01 < 0.01 0.0049 0.0062 0.013 

Co 0.42 0.31 0.37 0.35 0.34 

Ni 0.95 0.73 0.89 0.85 0.8 

Pb < 0.03 < 0.01 < 0.01 0.015 < 0.015 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.02 0.01 0.01 0.016 0.016 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.02 0.02 0.02 0.027 0.024 

As 0.007 0.007 0.0064 0.0082 < 0.0073 

Sum cations (meq/L) 32.5 27.6 30.7 30.9 26.0 

Sum anions (meq/L) 27.8 25.6 27.0 25.9 26.9 

Charge imbalance (percent) 15.4 7.49 12.8 17.3 -3.61 

183
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sugar Shack South 

Well ID MMW-32B MMW-32B MMW-32B MMW-32B MMW-32B 

Sample Date 6/18/01 9/18/01 11/2/01 2/2/02 4/24/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,891 7,888 7,887 7,885 7,885 

Field Temperature (o

C) 11.7 17.9 12.3 8.3 9.5 

pH, field, [lab] 6.9 6.66 6.63 6.78 6.71 

Eh (V) 0.071 0.021 0.035 0.055 0.071 

Spec Cond (PS/cm) field, [lab] 2,820 2,540 2,560 281 2,850 

TDS (mg/L) 2,700 2,700 2,600 2,600 2,600 

Constituent, dissolved (mg/L) 

Ca 670 610 590 620 600 

Mg 110 94 95 100 86 

Ba < 0.01 < 0.01 < 0.01 0.011 0.011 

Na 76 69 72 81 77 

K 7.2 6.4 6.5 7.4 7 

SO4 1,600 1,600 1,600 1,500 1,600 

Alkalinity (as HCO3) 300 290 300 290 290 

F 4.2 2.6 2.7 2 3.4 

Cl 38 38 40 37 36 

SiO2 24 21 24 26 26 

Al < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 

Fe 2.1 1.8 1.9 1.9 1.7 

Mn 3.9 3.4 3.5 3.8 3.5 

Cu < 0.01 < 0.01 0.001 0.00097 < 0.01 

Zn 1.9 1.6 1.7 1.7 1.5 

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 

Cd < 0.001 < 0.001 0.0004 0.00047 0.00051 

Ag < 0.002 < 0.002 0.001 0.0025 0.0023 

Cr < 0.01 < 0.01 0.002 0.0036 0.0061 

Co < 0.01 < 0.01 0.005 0.004 0.0036 

Ni < 0.02 < 0.02 < 0.01 0.016 0.018 

Pb < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.0057 0.0044 0.005 0.0052 0.0049 

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 < 0.0025 < 0.005 0.0042 

As < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 

Sum cations (meq/L) 34.1 29.7 29.6 32.4 29.8 

Sum anions (meq/L) 27.4 27.4 28.3 26.4 28.3 

Charge imbalance (percent) 21.9 8.07 4.52 20.5 5.24 

184
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-13 MMW-13 MMW-13 MMW-13 MMW-13 MMW-13 

Sample Date 11/8/94 11/8/94 11/8/94 6/1/95 4/17/96 8/1/96 

Miscellaneous information filtered filtered filtered filtered filtered filtered 

Comments --- --- --- --- --- ---

Source ID (see table 2) Slifer 1996 SLD lab sheet, SPRI 1995, SRK MMW wkst MMW wkst MMW wkst 

Slifer 1996 1995, MC DB, MMW 

kt Lab ID (see table 2) SLD IC-94 0657 SLD WC-94 ETC --- --- ---

6426 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

33.3 

1,480 # 

1,440 # 

---

---

---

---

39.6 

[6.59] 

[1,480 #] 

1,440 # 

---

---

---

32.3 

8.9 

7.9 

2,280 

1,400 

---

---

---

---

---

7.07 

1,470 

---

---

33.3 

9.1 

7.32 

1,500 

1,290 # 

---

---

---

---

---

7.15 

1,480 # 

---

---

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

310 

38 

< 0.1 

---

---

258 

48.9 

32 

7 

---

316 

38.7 

0.036 

30 

5.4 

---

---

---

---

---

---

71 

< 0.1 

21 

---

290 

39.5 

0.02 

25 

5.9 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

---

178 

18 

< 0.1 

0.2 

0.91 

< 0.01 

0.2 [0.0372] 

0.051 

< 0.001 

< 0.001 

< 0.001 

0.011 

0.01 

< 0.001 

< 0.0002 [<0.001] 

< 0.001 

< 0.001 

< 0.05 

< 0.001 

---

---

717 

146 

1.8 

13 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

700 

200 

1.67 

14 

19 

< 0.05 

0.198 

1.02 

< 0.010 

0.222 

0.05 

< 0.0005 

< 0.10 

< 0.010 

0.013 

< 0.02 

< 0.002 

< 0.0002 

< 0.004 

< 0.010 

< 0.005 

< 0.005 

602 

7.49 

1.2 

1.3 

2 

< 0.010 

0.012 

< 0.02 

< 0.005 

< 0.1 

---

---

---

---

---

---

---

---

---

---

---

---

728 

160 

2.1 

0.37 

< 0.05 

0.954 

< 0.010 

< 0.5 

< 0.02 

< 0.01 

< 0.01 

< 0.01 

0.02 

< 0.02 

< 0.005 

< 0.0002 

< 0.005 

< 0.010 

< 0.005 

< 0.01 

---

---

570 

13 

11 

0.2 

< 0.05 

0.84 

< 0.01 

0.061 

0.03 

< 0.0005 

< 0.01 

< 0.01 

0.02 

< 0.02 

< 0.0002 

< 0.004 

< 0.01 

< 0.005 

< 0.005 

---

---

---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

14.6 

13.9 

16.3 

14.2 

---

---

---

---

15.6 

8.88 

Charge imbalance (percent) --- 5.08 13.9 --- --- 55.1 

185
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-13 MMW-13 MMW-13 MMW-13 MMW-13 MMW-13 

Sample Date 1/1/97 6/25/97 11/7/97 5/11/98 6/11/98 2/3/00 

Miscellaneous information filtered --- 11/6/97-11/7/97 --- 11/5/98 --- filtered 

in MC DB 

Comments --- --- --- --- --- ---

Source ID (see table 2) MMW wkst NMED: ACZ lab MC DB, URS MC DB, NMED: ACZ lab MC DB, MMW wkst, 

sheet, MC DB, URS 3/01 URS 3/01 sheet, MC DB RGC 8/10, URS 

Lab ID (see table 2) --- ACZ RG 46921 --- --- ACZ RG 70728 Paragon Analytics 

Depth to Water (m) --- --- --- --- 39 37.1 

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (o

C) --- --- 10.3 --- --- 10.1 

pH, field, [lab] 7.05 --- 7.1 --- --- 7.19 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 7,060 # --- 1,680 # --- --- 1,590 

TDS (mg/L) --- 1360, 1450 1,490 1,570 1530, 1670 1,400 

Constituent, dissolved (mg/L) 

Ca 363 340 350 371 370 330 

Mg 44.3 39.3 47.3 40.4 44.3 29 

Ba 0.015 0.023 0.01 --- 0.008 0.012 

Na 31.6 30.5 30 29.1 31.9 27 

K 5.1 7 3.9 5.1 4.6 7.2 

SO4 1,290 # 790 910 880 930 700 

Alkalinity (as HCO3) --- 201 --- 207 226 190 

F 1.74 1.6 1.8 1.4 1.6 1.9 

Cl --- 14 14 16 16 16 

SiO2 50.7 --- 26 --- --- 13.9 

Al 0.04 0.04 0.52 ND 0.04 0.13 

Fe 0.03 0.16 0.02 ND < 0.01 < 0.1 

Mn 0.478 0.706 0.378 0.13 0.061 0.029 

Cu < 0.01 < 0.01 < 0.01 ND < 0.01 < 0.01 

Zn 0.03 0.36 0.17 0.05 0.04 0.044 

Mo < 0.02 0.05 < 0.05 0.04 0.05 < 0.1 

Cd < 0.0005 0.0008 < 0.003 ND < 0.0005 < 0.001 

Ag < 0.002 --- < 0.005 --- --- < 0.002 

Cr 0.01 --- 0.01 --- --- < 0.01 

Co 0.02 0.05 0.02 ND --- < 0.01 

Ni 0.01 0.01 < 0.05 ND --- < 0.02 

Pb < 0.001 --- < 0.04 --- --- < 0.003 

Hg < 0.0002 --- < 0.0002 --- --- < 0.0005 

Be < 0.0005 --- < 0.01 --- --- < 0.004 

V < 0.005 --- < 0.005 --- --- < 0.01 

Se < 0.001 0.002 < 0.001 --- --- < 0.005 

As < 0.001 --- < 0.001 --- --- < 0.005 

Sum cations (meq/L) 16.5 17.1 17.5 17.9 18.1 16.1 

Sum anions (meq/L) 20.2 15.5 14.1 16.9 18.1 14.1 

Charge imbalance (percent) -20.0 9.41 21.4 5.75 0.11 13.1 

186
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-13 MMW-13 MMW-13 MMW-13 MMW-13 

Sample Date 6/6/01 9/10/01 12/4/01 1/28/02 4/19/02 

Miscellaneous information filtered filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,940 7,942 7,936 --- ---

Field Temperature (o

C) 11.9 13.1 10 8.5 12 

pH, field, [lab] 7.03 7.05 7.2 7.37 7.41 

Eh (V) 0.276 0.015 0.169 0.132 0.343 

Spec Cond (PS/cm) field, [lab] 1,910 # 1,870 # 1,660 # 1,630 # 1,630 # 

TDS (mg/L) 1,700 1,600 1,400 1,400 1,300 

Constituent, dissolved (mg/L) 

Ca 450 370 380 350 380 

Mg 56 43 37 35 34 

Ba < 0.01 < 0.01 < 0.01 0.02 0.0096 

Na 34 30 27 30 29 

K 4.8 7.2 8.1 7 8.3 

SO4 1,000 880 760 760 750 

Alkalinity (as HCO3) 190 190 170 150 120 

F 1.8 1.8 2.1 1.9 2 

Cl 10 14 16 14 14 

SiO2 30 17 15 18 16 

Al < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 

Fe 0.57 0.14 < 0.1 < 0.1 < 0.1 

Mn 0.97 0.28 0.02 0.13 0.016 

Cu < 0.01 < 0.01 < 0.0012 0.0007 < 0.01 

Zn < 0.02 0.06 0.06 0.03 0.021 

Mo < 0.1 < 0.1 0.03 0.043 0.035 

Cd < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 < 0.01 < 0.01 0.00094 

Co < 0.01 < 0.01 0.009 0.0078 0.011 

Ni < 0.02 < 0.02 0.0035 0.0033 0.0035 

Pb < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be < 0.004 < 0.004 < 0.004 < 0.004 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.005 0.007 0.0034 0.0068 

As < 0.005 < 0.005 < 0.005 0.002 < 0.005 

Sum cations (meq/L) 22.0 18.1 18.6 17.3 18.5 

Sum anions (meq/L) 17.6 16.5 14.4 14.3 13.3 

Charge imbalance (percent) 22.3 9.18 25.6 19.4 32.5 

187
--- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-25A MMW-25A MMW-25B MMW-25B 

Sample Date 1/12/00 1/28/02 1/12/00 1/12/00 

Miscellaneous information DRY; DTW=23.01 filtered filtered filtered 

Comments --- ---

Source ID (see table 2) MC DB, MMW wkst MC CD 

Lab ID (see table 2) --- Paragon 

Analytics 

MC DB, MMW wkst, NMED: SLD lab 

RGC 8/10, URS 3/01 sheet 

Paragon Analytics SLD 2000 00108 

Depth to Water (m) --- --- 30.1 30.1 

Water Elevation (ft) --- 7,981 --- ---

Field Temperature (o

C) --- 7.8 12.9 ---

pH, field, [lab] --- 6.99 7 7.81 

Eh (V) --- 0.133 --- ---

Spec Cond (PS/cm) field, [lab] --- 2,440 2,600 ---

TDS (mg/L) --- 2,300 2,500 2,130 

Constituent, dissolved (mg/L) 

Ca --- 590 570 565 

Mg --- 55 57 54.4 

Ba --- 0.012 0.027 ---

Na --- 48 55 51.4 

K --- 8.2 8.4 6.07 

SO4 --- 1,400 1,600 1,470 

Alkalinity (as HCO3) --- 180 200 152 

F --- 2.1 1.9 ---

Cl --- 33 33 30.5 

SiO2 --- 21.4 20.1 ---

Al --- < 0.05 0.1 ---

Fe --- < 0.1 0.13 ---

Mn --- 0.014 0.27 ---

Cu --- 0.0017 < 0.01 ---

Zn --- 0.25 0.14 ---

Mo --- 0.028 < 0.1 ---

Cd --- 0.00039 < 0.001 ---

Ag --- < 0.002 0.003 ---

Cr --- 0.00089 < 0.01 ---

Co --- < 0.01 < 0.01 ---

Ni --- 0.005 0.053 ---

Pb --- < 0.006 < 0.006 ---

Hg --- < 0.0002 < 0.01 ---

Be --- < 0.004 < 0.004 ---

V --- < 0.01 < 0.01 ---

Se --- 0.0049 < 0.01 ---

As --- < 0.005 < 0.005 ---

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

---

---

---

26.9 

23.7 

12.4 

25.3 

27.2 

-7.09 

25.2 

24.1 

4.48 

188
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-25B MMW-25B MMW-25B MMW-25B MMW-25B 

Sample Date 1/12/00 6/20/01 9/8/01 12/4/01 4/19/02 

Miscellaneous information filtered, Duplicate filtered filtered filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) NMED: SLD lab MC CD MC CD MC CD MC CD 

sheet 

Lab ID (see table 2) SLD HM 2000 Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

0064 

Depth to Water (m) 30.1 --- --- --- ---

Water Elevation (ft) --- 7,980 7,982 7,980 7,980 

Field Temperature (o

C) --- 18.1 16.9 13.5 15.2 

pH, field, [lab] --- 6.73 6.87 6.99 6.94 

Eh (V) --- 0.22 0.092 0.203 -0.006 

Spec Cond (PS/cm) field, [lab] --- 2,410 2,450 2,490 2,500 

TDS (mg/L) --- 2,300 2,400 2,300 2,300 

Constituent, dissolved (mg/L) 

Ca 520 610 570 580 530 

Mg 50 64 56 57 59 

Ba < 0.1 < 0.01 < 0.01 0.0093 0.013 

Na --- 45 45 49 47 

K --- 8.4 8.4 8.7 8.9 

SO4 --- 1,500 1,400 1,400 1,400 

Alkalinity (as HCO3) --- 180 190 180 180 

F --- 1.4 2.1 2.1 1.6 

Cl --- 30 32 34 29 

SiO2 --- 19 19 21 21 

Al 0.2 5.2 < 0.05 < 0.05 < 0.05 

Fe 0.1 < 0.1 < 0.1 < 0.1 0.22 

Mn 0.26 2.5 0.02 0.03 0.062 

Cu < 0.1 0.06 < 0.01 0.0018 < 0.01 

Zn < 0.1 0.59 0.27 0.28 0.21 

Mo < 0.1 < 0.1 < 0.1 0.03 0.035 

Cd < 0.1 0.0039 < 0.001 < 0.001 0.00054 

Ag < 0.1 < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.1 < 0.01 < 0.01 < 0.0011 < 0.01 

Co < 0.05 0.02 < 0.01 < 0.00099 0.0015 

Ni < 0.1 0.06 < 0.02 0.01 0.13 

Pb < 0.005 < 0.006 < 0.006 < 0.006 < 0.006 

Hg --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be < 0.05 < 0.004 < 0.004 0.00055 ---

V < 0.1 < 0.01 < 0.01 < 0.01 < 0.01 

Se < 0.005 < 0.0056 < 0.0055 < 0.0039 < 0.005 

As < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 

Sum cations (meq/L) --- 27.2 25.4 26.3 24.2 

Sum anions (meq/L) --- 24.2 23.4 23.4 23.6 

Charge imbalance (percent) --- 11.8 8.03 11.4 2.49 

189
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump/Sulphur Gulch 

Well ID MMW-29A MMW-29A MMW-29A MMW-29A MMW-29A 

Sample Date 6/14/01 9/5/01 12/9/01 1/25/02 4/22/02 

Miscellaneous information filtered filtered --- filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,940 7,939 7,932 7,927 7,929 

Field Temperature (o

C) 9.4 20.8 10.1 8.1 16 

pH, field, [lab] 4.92 4.6 4.67 4.61 4.54 

Eh (V) 0.177 0.246 0.194 0.269 0.244 

Spec Cond (PS/cm) field, [lab] 1,900 1,740 # 1,980 # 2,170 2,040 

TDS (mg/L) 1,800 1,500 --- 2,000 1,900 

Constituent, dissolved (mg/L) 

Ca 220 200 --- 240 220 

Mg 140 130 --- 150 140 

Ba < 0.01 < 0.01 --- 0.014 0.012 

Na 27 24 --- 31 29 

K 6.9 6.4 --- 7.4 7.5 

SO4 1,200 1,100 --- 1,400 1,300 

Alkalinity (as HCO3) 5.9 < 5 --- < 5 < 5 

F 47 34 --- 43 42 

Cl 23 22 --- 28 23 

SiO2 24 21 --- 24 24 

Al 46 37 --- 48 47 

Fe 0.14 < 0.1 --- < 0.1 0.18 

Mn 23 19 --- 25 22 

Cu 0.59 0.53 --- 0.71 0.65 

Zn 7.9 6.4 --- 8.6 8.1 

Mo < 0.1 < 0.1 --- < 0.1 < 0.1 

Cd 0.06 0.05 --- 0.065 0.062 

Ag < 0.002 < 0.002 --- < 0.002 0.0019 

Cr < 0.01 < 0.01 --- 0.0034 0.02 

Co 0.15 0.12 --- 0.16 0.14 

Ni 0.57 0.5 --- 0.66 0.64 

Pb < 0.009 < 0.009 --- < 0.009 < 0.009 

Hg < 0.0002 < 0.0002 --- < 0.0002 < 0.0002 

Be 0.01 0.01 --- 0.015 0.015 

V < 0.01 < 0.01 --- < 0.01 < 0.01 

Se 0.01 0.01 --- 0.017 0.017 

As < 0.005 < 0.005 --- < 0.005 0.0018 

Sum cations (meq/L) 20.9 18.3 --- 22.3 20.3 

Sum anions (meq/L) 19.0 16.7 --- 22.1 20.0 

Charge imbalance (percent) 9.50 9.37 --- 1.08 1.91 

190
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump/Sulphur Gulch 

Well ID MMW-29B MMW-29B MMW-29B MMW-29B MMW-29B 

Sample Date 6/14/01 9/5/01 12/9/01 1/25/02 4/22/02 

Miscellaneous information filtered filtered --- filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,941 7,940 7,933 7,928 7,929 

Field Temperature (o

C) 14.3 18.4 9.7 7.8 14.6 

pH, field, [lab] 6.96 7.27 7.24 7.32 7.48 

Eh (V) -0.144 -0.279 -0.242 -0.166 -0.313 

Spec Cond (PS/cm) field, [lab] 1,120 # 1,100 # 1,120 # 1,120 # 1,130 # 

TDS (mg/L) 850 850 --- 870 850 

Constituent, dissolved (mg/L) 

Ca 220 210 --- 200 210 

Mg 33 32 --- 29 31 

Ba < 0.01 0.02 --- 0.015 0.021 

Na 24 22 --- 18 19 

K 4.5 3.5 --- 2.7 3.3 

SO4 210 430 --- 470 450 

Alkalinity (as HCO3) 200 180 --- 170 180 

F 3.4 2.9 --- 3.5 3.6 

Cl 2.1 5.2 --- 4.2 4.2 

SiO2 24 24 --- 21 20 

Al 4.2 < 0.05 --- < 0.05 < 0.05 

Fe 0.74 0.19 --- 0.39 0.26 

Mn 3.8 3.2 --- 3.3 3.2 

Cu 0.02 < 0.01 --- < 0.01 < 0.01 

Zn 0.19 < 0.02 --- 0.011 0.011 

Mo < 0.1 < 0.1 --- < 0.1 < 0.1 

Cd < 0.001 < 0.001 --- < 0.001 < 0.001 

Ag < 0.002 < 0.002 --- < 0.002 < 0.002 

Cr < 0.01 < 0.01 --- 0.001 0.0014 

Co < 0.01 < 0.01 --- < 0.01 0.00095 

Ni < 0.02 < 0.02 --- 0.0021 0.0018 

Pb < 0.003 < 0.003 --- < 0.003 < 0.003 

Hg < 0.0002 < 0.0002 --- < 0.0002 < 0.0002 

Be < 0.004 < 0.004 --- 0.0015 0.00098 

V < 0.01 < 0.01 --- < 0.01 < 0.01 

Se < 0.005 < 0.005 --- < 0.005 0.0029 

As < 0.005 < 0.005 --- < 0.005 0.0036 

Sum cations (meq/L) 13.7 11.8 --- 11.0 11.6 

Sum anions (meq/L) 6.35 9.73 --- 10.6 10.2 

Charge imbalance (percent) 73.2 19.3 --- 4.42 13.3 

191
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-30A MMW-30A MMW-30A MMW-30A MMW-30A 

Sample Date 6/7/01 9/7/01 12/9/01 1/24/02 4/22/02 

Miscellaneous information filtered filtered --- filtered filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 7,930 7,929 7,924 7,920 7,920 

Field Temperature (o

C) 15.9 15.9 12 8 15.4 

pH, field, [lab] 4.47 4.47 4.36 4.49 4.3 

Eh (V) 0.138 0.201 0.195 0.17 0.273 

Spec Cond (PS/cm) field, [lab] 1,930 # 1,930 # 2,500 2,260 2,450 

TDS (mg/L) 1,300 1,800 --- 2,100 2,300 

Constituent, dissolved (mg/L) 

Ca 140 190 --- 220 230 

Mg 79 130 --- 170 190 

Ba < 0.01 < 0.01 --- 0.0097 0.01 

Na 17 23 --- 30 32 

K 4 3.8 --- 6.1 6.7 

SO4 850 1,300 --- 1,500 1,700 

Alkalinity (as HCO3) 6.5 < 5 --- < 5 < 5 

F 20 27 --- 34 40 

Cl 25 24 --- 24 26 

SiO2 20 21 --- 26 28 

Al 37 48 --- 62 70 

Fe < 0.1 < 0.1 --- 0.14 0.035 

Mn 17 27 --- 38 35 

Cu 0.56 0.57 --- 0.87 0.94 

Zn 4.1 5.3 --- 7.7 8.9 

Mo < 0.1 < 0.1 --- < 0.1 < 0.1 

Cd 0.02 0.04 --- 0.05 0.061 

Ag < 0.002 < 0.002 --- < 0.002 0.0011 

Cr < 0.01 < 0.01 --- 0.025 0.011 

Co 0.13 0.2 --- 0.3 0.3 

Ni 0.39 0.59 --- 0.82 0.85 

Pb < 0.006 0.009 --- < 0.015 < 0.015 

Hg < 0.0002 < 0.0002 --- < 0.0002 < 0.0002 

Be 0.01 0.01 --- 0.019 0.019 

V < 0.01 < 0.01 --- < 0.01 < 0.01 

Se 0.01 0.01 --- 0.023 0.03 

As < 0.005 < 0.005 --- 0.0057 0.0093 

Sum cations (meq/L) 13.5 18.6 --- 24.1 24.9 

Sum anions (meq/L) 13.9 19.9 --- 22.7 25.0 

Charge imbalance (percent) -2.29 -6.91 --- 5.73 -0.39 

192
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Middle Waste Rock Dump 

Well ID MMW-30B MMW-30B MMW-30B MMW-30B MMW-30B 

Sample Date 

Miscellaneous information 

6/7/01 

filtered 

9/7/01 

filtered 

12/9/01 

---

1/24/02 

filtered 

4/23/02 

filtered 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

7,929 

17.1 

7.84 

-0.141 

3,120 

3,200 

---

7,929 

14.9 

6.41 

-0.284 

3,520 

3,900 

---

7,924 

8.7 

6.5 

-0.28 

3,500 

---

---

7,921 

9.3 

6.53 

-0.307 

3,400 

3,500 

---

7,921 

13.3 

6.49 

-0.298 

3,330 

3,300 

Constituent, dissolved (mg/L) 

Ca 490 470 --- 490 460 

Mg 42 39 --- 37 42 

Ba 0.04 0.03 --- 0.066 0.058 

Na 410 500 --- 390 340 

K 13 12 --- 9.9 10 

SO4 1,500 1,100 --- 1,200 1,100 

Alkalinity (as HCO3) 430 860 --- 450 470 

F 3 2.8 --- 1.5 1.9 

Cl 16 35 --- 26 29 

SiO2 26 28 --- 30 32 

Al 0.16 0.14 --- 0.099 0.073 

Fe 0.61 < 0.1 --- 0.053 0.18 

Mn 8.2 4.2 --- 3.8 3.7 

Cu < 0.01 < 0.01 --- < 0.01 < 0.01 

Zn < 0.02 < 0.02 --- 0.013 0.01 

Mo < 0.1 < 0.1 --- < 0.1 < 0.1 

Cd < 0.001 < 0.001 --- < 0.001 < 0.001 

Ag < 0.002 < 0.002 --- < 0.002 0.00099 

Cr < 0.01 < 0.01 --- < 0.01 0.02 

Co < 0.01 < 0.01 --- < 0.01 0.0012 

Ni < 0.02 < 0.02 --- 0.0046 0.0069 

Pb < 0.006 < 0.003 --- < 0.006 < 0.006 

Hg < 0.0002 < 0.0002 --- < 0.0002 ---

Be < 0.004 < 0.004 --- 0.002 0.0023 

V < 0.01 < 0.01 --- 0.012 0.012 

Se < 0.005 < 0.005 --- 0.0019 0.0059 

As 0.006 0.03 --- 0.019 0.017 

Sum cations (meq/L) 37.2 41.8 --- 37.5 34.7 

Sum anions (meq/L) 29.6 31.0 --- 25.8 24.5 

Charge imbalance (percent) 22.5 29.6 --- 37.0 34.2 

193
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sulphur Gulch/ Spring Valley 

Well ID MMW-16 MMW-16 MMW-16 MMW-16 

Sample Date 6/1/95 4/17/96 1/1/97 6/22/01 

Miscellaneous information filtered filtered Pumped Dry filtered 

Comments --- --- --- ---

Source ID (see table 2) MMW wkst MMW wkst MMW wkst; MC DB MC CD 

Lab ID (see table 2) --- --- --- Paragon Analytics 

Depth to Water (m) --- 25.3 --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (o

C) --- 8.7 --- 15.3 

pH, field, [lab] 4.34 4.96 --- 4.57 

Eh (V) --- --- --- 0.304 

Spec Cond (PS/cm) field, [lab] 2,740 3,140 --- 2,520 

TDS (mg/L) --- 3,410 # --- 2,600 

Constituent, dissolved (mg/L) 

Ca --- --- --- 550 

Mg --- 211 # --- 88 

Ba --- < 0.1 --- < 0.01 

Na --- 53 --- 37 

K --- --- --- 15 

SO4 1,690 # 2,870 # --- 1,700 

Alkalinity (as HCO3) --- < 1 --- < 5 

F 20.4 58.5 --- 20 

Cl --- --- --- 24 

SiO2 --- --- --- 43 

Al 21.8 52.4 --- 26 

Fe 0.66 0.6 --- 0.42 

Mn 10.4 30.1 # --- 7.9 

Cu 0.9 1.16 --- 0.78 

Zn 5.3 10.1 # --- 2.9 

Mo < 0.02 < 0.02 --- < 0.1 

Cd 0.02 0.095 --- 0.02 

Ag --- < 0.01 --- < 0.002 

Cr --- < 0.01 --- < 0.01 

Co --- 0.16 --- 0.58 

Ni --- 0.65 --- 0.24 

Pb < 0.1 < 0.005 --- < 0.006 

Hg --- < 0.0002 --- < 0.0002 

Be --- 0.049 --- 0.02 

V --- < 0.01 --- < 0.01 

Se --- 0.017 --- 0.008 

As --- < 0.01 --- < 0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

27.3 

24.4 

Charge imbalance (percent) --- --- --- 11.3 

194
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sulphur Gulch 

Well ID MMW-24 MMW-24 MMW-24 MMW-24 

Sample Date 

Miscellaneous information 

1/12/00 

duplicate 

1/12/00 

filtered, duplicate 

1/12/00 

duplicate 

6/23/01 

filtered 

Comments --- --- --- ---

Source ID (see table 2) 

Lab ID (see table 2) 

NMED: SLD lab sheet 

SLD HM-2000 00107 

MC DB, MMW wkst, RGC 

8/10, URS 3/01 

Paragon Analytics 

NMED: SLD lab sheet 

SLD HM-2000 00062 

MC CD 

Paragon Analytics 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

28.7 

4.78 

2,720 

---

---

---

---

28.7 

10.1 

4.79 

2,980 

3,300 

---

---

---

---

---

---

---

---

---

---

8,060 

15 

5.4 

0.133 

3,100 

3,000 

Constituent, dissolved (mg/L) 

Ca 565 560 550 580 

Mg 92.5 100 90 86 

Ba --- 0.024 --- < 0.01 

Na 64.5 77 --- 67 

K 9.2 13 --- 15 

SO4 1,680 1,800 --- 1,800 

Alkalinity (as HCO3) 2.8 < 5 --- 9.3 

F --- 41 --- 43 

Cl 34.6 44 --- 31 

SiO2 --- 38.5 --- 28 

Al --- 53 46 35 

Fe --- 0.22 0.4 < 0.1 

Mn --- 14 12 14 

Cu --- 1.4 1.4 0.99 

Zn --- 2.7 2.2 2.4 

Mo --- < 0.1 --- < 0.1 

Cd --- 0.02 --- 0.01 

Ag --- < 0.002 --- < 0.002 

Cr --- < 0.01 --- < 0.01 

Co --- 0.23 0.16 0.17 

Ni --- 0.51 0.4 0.37 

Pb --- < 0.006 --- < 0.006 

Hg --- < 0.0002 --- < 0.0002 

Be --- 0.023 --- 0.01 

V --- < 0.01 --- < 0.01 

Se --- 0.01 --- 0.01 

As --- 0.017 --- 0.006 

Sum cations (meq/L) 

Sum anions (meq/L) 

27.8 

24.9 

32.1 

26.6 

---

---

29.5 

26.4 

Charge imbalance (percent) 10.9 18.9 --- 11.0 

195
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location 

Well ID MMW-24 MMW-24 MMW-24 MMW-24 

Sample Date 

Miscellaneous information 

9/5/01 

filtered 

12/7/01 

filtered 

1/26/02 

filtered 

4/17/02 

filtered 

Comments --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

8,066 

18.5 

5.52 

0.29 

2,960 

2,800 

---

8,050 

6.6 

5.51 

0.288 

2,150 

1,500 

---

8,046 

12.6 

4.83 

0.255 

2,670 

2,500 

---

8,055 

16.8 

4.67 

409 

2,770 

2,700 

Constituent, dissolved (mg/L) 

Ca 570 330 520 510 

Mg 83 35 13 80 

Ba < 0.01 < 0.01 0.013 0.017 

Na 69 100 56 56 

K 18 24 14 16 

SO4 1,700 1,850 1,600 1,700 

Alkalinity (as HCO3) 35 15 < 5 5.4 

F 17 16 33 32 

Cl 28 24 19 18 

SiO2 20 14 36 16 

Al 9.8 12 40 31 

Fe < 0.1 < 0.1 < 0.1 < 0.1 

Mn 12 5.6 13 13 

Cu 0.12 0.32 1 0.88 

Zn 1.5 0.92 2.3 2.1 

Mo < 0.1 0.02 < 0.1 < 0.1 

Cd 0.01 0.008 0.019 0.018 

Ag < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 0.02 0.015 0.0025 

Co 0.14 0.06 0.16 0.16 

Ni 0.32 0.15 0.39 0.36 

Pb 0.009 < 0.003 0.0042 < 0.006 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.0091 0.0056 0.016 0.013 

V < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.008 0.008 0.013 0.015 

As < 0.005 < 0.005 0.0099 0.0035 

Sum cations (meq/L) 

Sum anions (meq/L) 

27.7 

25.0 

17.7 

32.1 

23.6 

24.3 

26.2 

24.9 

Charge imbalance (percent) 10.2 -57.9 -3.03 4.94 

196
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Spring Gulch 

Well ID MMW-34B MMW-34B MMW-34B MMW-34B 

Sample Date 

Miscellaneous information 

9/17/01 

* reported as MMW-35B 

(MC CD 9-18-02) 

10/18/01 

filtered 

1/22/02 

filtered 

4/12/02 

filtered 

Comments but determined to be MMW 

34B so switched here 

--- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

8,508 

16.5 

5.71 

0.256 

2,520 

3,200 

---

8,508 

18.1 

5.34 

0.24 

3,030 

3,100 

---

8,506 

10 

4.88 

0.134 

2,910 

3,100 

---

8,505 

12.4 

4.85 

0.261 

2,920 

3,100 

Constituent, dissolved (mg/L) 

Ca 630 640 600 610 

Mg 64 75 76 73 

Ba 0.02 0.05 0.0067 0.006 

Na 53 52 48 50 

K 22 17 16 16 

SO4 1900 * 2,100 2,000 2,000 

Alkalinity (as HCO3) 22 * 35 7.4 6.8 

F 88 * 120 120 120 

Cl 6.4 * 4.7 4.6 4.9 

SiO2 53 73 71 36 

Al 53 69 69 71 

Fe 0.13 0.14 0.15 0.13 

Mn 22 24 22 22 

Cu 0.73 0.96 0.99 1 

Zn 6.5 8.6 8.1 8 

Mo 0.27 0.11 0.11 0.13 

Cd 0.03 0.04 0.048 0.049 

Ag < 0.002 < 0.002 < 0.002 < 0.002 

Cr < 0.01 < 0.01 0.029 0.027 

Co < 0.01 < 0.01 0.0061 0.0062 

Ni 0.11 0.14 0.14 0.14 

Pb 0.04 0.02 0.019 0.0099 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 

Be 0.09 0.12 0.13 0.13 

V < 0.01 < 0.01 < 0.01 < 0.01 

Se 0.01 0.02 0.023 0.023 

As 0.0071 0.01 0.016 0.014 

Sum cations (meq/L) 

Sum anions (meq/L) 

33.3 

33.6 

29.3 

30.4 

28.6 

29.4 

28.9 

29.1 

Charge imbalance (percent) -0.82 -3.67 -2.57 -0.61 

197
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Blind/ Sulphur North 

Well ID MMW-35B MMW-35B MMW-35B MMW-35B MMW-35B 

Sample Date 6/19/01 9/17/01 10/18/01 1/22/02 4/12/02 

Miscellaneous information filtered * reported as MMW-34B (MC filtered filtered filtered 

CD 9-18-02) 

Comments --- but determined to be MMW --- --- ---

35B so switched here 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,489 8,494 8,494 8,494 8,490 

Field Temperature (o

C) 16.2 17.2 17.9 6.3 15.2 

pH, field, [lab] 6.87 6.66 6.62 6.75 6.67 

Eh (V) 0.066 0.053 0.057 0.075 0.061 

Spec Cond (PS/cm) field, [lab] 3,340 3,360 3,530 3,340 3,320 

TDS (mg/L) 3,200 2,900 3,000 3,000 2,900 

Constituent, dissolved (mg/L) 

Ca 840 890 890 830 850 

Mg 39 36 35 39 37 

Ba 0.03 0.02 0.02 0.021 0.024 

Na 49 46 47 51 49 

K 21 19 19 19 20 

SO4 1,500 1,500 * 1,500 1,500 1,500 

Alkalinity (as HCO3) 340 360 * 360 360 350 

F 3.3 2.9 * 2.1 2.7 2.9 

Cl 290 300 * 300 280 260 

SiO2 18 18 18 18 19 

Al < 0.05 < 0.05 < 0.05 0.063 0.0053 

Fe 3.1 0.28 0.25 0.42 0.37 

Mn 6.2 5.2 5.5 5.3 5.5 

Cu < 0.01 < 0.01 < 0.01 < 0.01 0.01 

Zn 0.23 0.34 0.42 0.49 0.38 

Mo < 0.1 < 0.1 < 0.07 0.05 0.082 

Cd < 0.001 < 0.001 < 0.00057 0.0007 0.001 

Ag 0.0025 < 0.002 < 0.002 0.0011 0.002 

Cr < 0.01 < 0.01 0.0013 0.0058 0.01 

Co 0.03 0.02 0.02 0.029 0.028 

Ni 0.05 0.05 0.05 0.06 0.058 

Pb < 0.006 < 0.006 < 0.009 < 0.009 0.009 

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.0002 

Be 0.02 0.04 0.06 0.078 0.079 

V < 0.01 < 0.01 < 0.01 < 0.01 0.01 

Se < 0.005 < 0.005 0.0062 0.0026 0.005 

As < 0.005 < 0.005 < 0.0032 < 0.005 0.005 

Sum cations (meq/L) 36.1 35.1 37.6 36.2 36.3 

Sum anions (meq/L) 33.1 29.8 33.2 33.8 32.4 

Charge imbalance (percent) 8.7 16.5 12.3 6.9 11.4 

198
--- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Sulphur Gulch Spring Gulch 

Well ID MMW-39A MMW-39A MMW-39A MMW-40A MMW-40A 

Sample Date 12/17/01 3/28/02 6/5/02 6/19/01 6/4/02 

Miscellaneous information filtered filtered filtered checked for field filtered 

parameters in MC CD 

Comments checked for field Ni values ---

parameters confirmed 

Source ID (see table 2) MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics 

MC CD MC CD 

Paragon Analytics Paragon Analytics 

--- ---

--- 8,800 

19.4 16.2 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

--- --- ---

--- --- 8,115 

--- 11.7 13.3 

--- 4.09 4.16 6.23 6.26 

--- 0.298 0.254 0.336 0.25 

--- 4,860 4,760 1,020 # 1,070 # 

5,800 5,700 5,600 810 830 

490 460 460 150 140 

400 400 410 52 45 

0.0074 0.0088 0.0066 0.02 0.026 

65 64 65 30 30 

17 17 16 4.2 3.9 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

Se 

As 

3,800 3,800 4,100

< 5 < 5 < 5

170 170 180

79 74 72

49 54 51

180 190 180

< 0.1 0.11 < 0.1

120 110 100

5.5 5.9 5.9

26 27 25

0.05 0.062 0.038

0.19 0.18 0.18

< 0.002 0.00067 < 0.002

< 0.01 0.0022 0.0039

0.5 0.52 0.49

2.0 2.0 2.0

< 0.06 0.022 < 0.06

< 0.0002 < 0.0002 < 0.0002

0.19 0.19 0.2

< 0.01 0.00052 < 0.01

0.06 0.062 0.039

0.02 0.025 0.02

480 510 

51 47 

1.6 1.4 

11 11 

36 39 

5.2 0.05 

< 0.1 < 0.1 

2.3 0.017 

0.11 0.00071 

0.54 0.066 

< 0.1 < 0.1 

0.0053 0.001 

< 0.002 < 0.002 

< 0.01 0.00077 

0.02 0.0061 

0.06 < 0.02 

< 0.003 < 0.003 

< 0.0002 < 0.0002 

< 0.004 < 0.004 

< 0.01 < 0.01 

< 0.005 0.0044 

< 0.005 0.0017 

Sum cations (meq/L) 51.1 50.1 47.7 11.0 9.75 

Sum anions (meq/L) 55.2 54.8 59.9 8.65 9.42 

Charge imbalance (percent) -7.67 -9.00 -22.7 23.9 3.44 

199

V 
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area East of Mill 

Well ID MMW-17A MMW-17A MMW-17A MMW-17A MMW-17A 

Sample Date 1/12/00 6/25/01 9/4/01 10/19/01 7/17/02 

Miscellaneous information DRY filtered filtered filtered ---

Comments --- --- --- --- ---

Source ID (see table 2) MC DB, MMW MC CD MC CD MC CD MC CD 

wkst 

Lab ID (see table 2) --- Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- 8,108 8,105 8,098 ---

Field Temperature (

o

C) --- 9.9 14.8 15 17.5 

pH, field, [lab] --- 4.46 4.47 4.49 4.4 

Eh (V) --- 0.082 0.372 0.304 0.245 

Spec Cond (PS/cm) field, [lab] --- 719 765 837 788 

TDS (mg/L) --- 560 610 610 ---

Constituent, dissolved (mg/L) 

Ca --- 97 100 100 ---

Mg --- 26 29 27 ---

Ba --- < 0.01 < 0.01 0.0071 ---

Na --- < 10 < 10 9 ---

K --- 1.9 1.9 2.1 ---

SO4 --- 400 430 450 ---

Alkalinity (as HCO3) --- < 5 < 5 < 5 ---

F --- 2 2 1.8 ---

Cl --- 6.4 5.8 6.2 ---

SiO2 --- 26 28 28 ---

Al --- 8.9 11 10 ---

Fe --- 0.5 < 0.1 < 0.1 ---

Mn --- 1.7 1.8 1.8 ---

Cu --- 0.05 0.04 0.04 ---

Zn --- 0.63 0.63 0.62 ---

Mo --- < 0.1 < 0.1 < 0.1 ---

Cd --- 0.0023 0.0026 0.0023 ---

Ag --- < 0.002 < 0.002 < 0.002 ---

Cr --- < 0.01 < 0.01 0.0014 ---

Co --- 0.031 0.036 0.035 ---

Ni --- 0.089 0.098 0.09 ---

Pb --- < 0.003 < 0.003 < 0.003 ---

Hg --- < 0.0002 < 0.0002 < 0.0002 ---

Be --- < 0.004 < 0.004 0.0022 ---

V --- < 0.01 < 0.01 < 0.01 ---

Se --- < 0.005 < 0.005 < 0.005 ---

As --- < 0.005 < 0.005 0.0021 ---

Sum cations (meq/L) --- 6.40 6.71 6.84 ---

Sum anions (meq/L) --- 6.85 7.16 7.59 ---

Charge imbalance (percent) --- -6.85 -6.48 -10.4 ---

200
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area East of Mill 

Well ID MMW-17B MMW-17B MMW-17B MMW-17B 

Sample Date 

Miscellaneous information 

1/12/00 

wkst uses Paragon 

results 

1/12/00 

---

1/12/00 

filtered 

6/25/01 

filtered 

Comments --- --- --- ---

Source ID (see table 2) MC DB, MMW wkst, 

RGC 8/10, URS 3/01 

NMED: SLD lab sheet NMED: SLD lab sheet, 

MC DB, MMW wkst 

MC CD 

Lab ID (see table 2) Paragon Analytics SLD WC 2000 00106 SLD HM 2000 00063 Paragon Analytics 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

28.3 

10 

4.76 

887 

790 

---

---

28.3 

4.68 

662 

---

---

---

---

28.3 

10 

4.76 

887 

790 

---

---

---

8,109 

11.5 

5.54 

0.103 

847 

600 

Constituent, dissolved (mg/L) 

Ca 110 115 110 93 

Mg 30 29.6 32 25 

Ba 0.019 --- < 0.1 < 0.01 

Na 10 9.32 10 < 10 

K 2 < 5 2 1.8 

SO4 480 443 480 430 

Alkalinity (as HCO3) < 5 < 2.5 < 5 < 5 

F 1.9 --- 1.9 1.9 

Cl 5.1 < 10 5.1 5.5 

SiO2 27.8 --- 27.8 30 

Al 11 --- 11 12 

Fe < 0.1 --- < 0.1 0.41 

Mn 2 --- 2 1.9 

Cu 0.11 --- 0.11 0.05 

Zn 0.74 --- 0.74 0.59 

Mo < 0.1 --- < 0.1 < 0.1 

Cd 0.0028 --- < 0.1 0.0023 

Ag < 0.002 --- < 0.1 < 0.002 

Cr < 0.01 --- < 0.1 < 0.01 

Co 0.04 --- < 0.05 0.035 

Ni 0.11 --- 0.11 0.092 

Pb < 0.003 --- < 0.005 < 0.003 

Hg < 0.0002 --- --- < 0.0002 

Be < 0.004 --- < 0.05 < 0.004 

V < 0.01 --- < 0.1 < 0.01 

Se < 0.005 --- < 0.005 < 0.005 

As < 0.005 --- < 0.005 < 0.005 

Sum cations (meq/L) 

Sum anions (meq/L) 

7.58 

8.04 

7.79 

7.20 

7.74 

8.01 

6.21 

7.36 

Charge imbalance (percent) -5.85 7.93 -3.52 -16.9 

201
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area East of Mill 

Well ID MMW-17B MMW-17B MMW-17B MMW-17B MMW-17B 

Sample Date 9/4/01 10/19/01 1/23/02 4/15/02 7/18/02 

Miscellaneous information filtered filtered filtered filtered ---

Comments --- --- * factor of 10 too --- ---

high 

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) 8,105 8,098 8,078 8,089 ---

Field Temperature (

o

C) 17.7 13.6 9 14.4 16.1 

pH, field, [lab] 4.4 4.44 4.79 4.45 4.47 

Eh (V) 0.347 0.273 0.256 0.287 0.258 

Spec Cond (PS/cm) field, [lab] 777 841 814 * 807 786 

TDS (mg/L) 610 610 630 620 ---

Constituent, dissolved (mg/L) 

Ca 100 110 100 97 ---

Mg 29 27 28 26 ---

Ba < 0.01 0.0074 0.21 0.0085 ---

Na < 10 9.2 9.3 8.9 ---

K 1.8 1.7 1.8 1.6 ---

SO4 430 450 440 440 ---

Alkalinity (as HCO3) < 5 < 5 < 5 < 5 ---

F 1.4 1.7 1.8 1.3 ---

Cl 5.7 5.7 5.4 4.6 ---

SiO2 28 28 26 28 ---

Al 11 10 8.8 10 ---

Fe < 0.1 < 0.1 0.016 0.075 ---

Mn 1.8 1.8 1.8 1.8 ---

Cu 0.048 0.04 0.057 0.044 ---

Zn 0.62 0.61 0.6 0.57 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd 0.0026 0.0024 0.0022 0.0019 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 0.0019 < 0.01 0.012 ---

Co 0.036 0.03 0.035 0.034 ---

Ni 0.11 0.09 0.094 0.11 ---

Pb < 0.003 < 0.003 < 0.003 < 0.003 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be < 0.004 0.0022 0.0019 0.0025 ---

V < 0.01 < 0.01 < 0.01 < 0.01 ---

Se < 0.005 < 0.005 0.0053 < 0.005 ---

As < 0.005 0.0023 < 0.005 < 0.005 ---

Sum cations (meq/L) 6.66 7.29 6.95 6.66 ---

Sum anions (meq/L) 7.07 7.51 7.53 7.37 ---

Charge imbalance (percent) -5.97 -3.02 -8.03 -10.1 ---

202
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area "Old Mill Well Area" 

Well ID MMW-28A MMW-28A MMW-28A MMW-28A MMW-28A MMW-28A MMW-28A 

Sample Date --- 6/25/01 9/4/01 10/23/01 1/24/02 4/17/02 7/18/02 

Miscellaneous information URS reference: filtered filtered filtered filtered filtered ---

"Molycorp 

Correspondence" 

Comments date not listed --- --- --- --- --- ---

Source ID (see table 2) URS 3/01 MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) --- Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- 8,076 8,075 8,062 8,046 8,059 ---

Field Temperature (

o

C) --- 10.4 19.8 11.7 5.3 11.3 19.1 

pH, field, [lab] 5.7 6.26 5.95 6.08 6.12 6.01 6.03 

Eh (V) --- 0.095 0.322 0.201 0.17 0.366 0.201 

Spec Cond (PS/cm) field, [lab] 820 936 966 1,010 # 7,910 943 904 

TDS (mg/L) 540 740 730 730 570 710 ---

Constituent, dissolved (mg/L) 

Ca --- 160 160 150 130 140 ---

Mg --- 33 35 32 28 31 ---

Ba --- 0.013 0.014 0.017 0.012 0.015 ---

Na --- 16 17 17 14 16 ---

K --- 2.9 3 3.4 2.5 2.4 ---

SO4 370 430 460 410 340 430 ---

Alkalinity (as HCO3) --- 63 67 93 66 63 ---

F 0.65 0.72 0.83 0.6 0.77 0.71 ---

Cl --- 11 11 12 10 9.2 ---

SiO2 --- 16 17 18 16 18 ---

Al --- 0.27 0.23 0.14 0.17 0.21 ---

Fe --- < 0.1 < 0.1 < 0.1 0.072 < 0.1 ---

Mn --- 0.042 0.052 0.0073 0.021 0.038 ---

Cu --- < 0.01 < 0.01 0.0025 0.0016 < 0.01 ---

Zn --- 0.15 0.15 0.1 0.12 0.13 ---

Mo --- < 0.1 < 0.1 0.027 < 0.1 < 0.1 ---

Cd --- < 0.001 < 0.001 0.0003 0.00062 < 0.001 ---

Ag --- < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr --- < 0.01 < 0.01 0.0011 0.0024 < 0.01 ---

Co --- < 0.01 < 0.01 < 0.01 0.00069 < 0.01 ---

Ni --- < 0.02 < 0.02 0.01 0.012 0.013 ---

Pb --- < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 ---

Hg --- < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be --- < 0.004 < 0.004 0.00007 0.0006 0.0006 ---

V --- < 0.01 < 0.01 < 0.01 0.0026 < 0.01 ---

Se --- < 0.005 < 0.005 < 0.005 0.002 < 0.005 ---

As --- < 0.005 < 0.005 < 0.005 0.0028 < 0.005 ---

Sum cations (meq/L) --- 9.52 9.42 9.10 8.11 8.48 ---

Sum anions (meq/L) --- 8.34 8.73 8.57 7.10 8.43 ---

Charge imbalance (percent) --- 13.1 7.54 6.05 13.3 0.50 ---

203
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area "Old Mill Well Area" 

Well ID MMW-28B MMW-28B MMW-28B MMW-28B MMW-28B MMW-28B 

Sample Date 6/25/01 9/4/01 10/23/01 1/24/02 4/17/02 7/18/02 

Miscellaneous information filtered filtered filtered filtered filtered ---

Comments --- --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 8,075 8,074 8,062 8,046 8,059 ---

Field Temperature (

o

C) 10.6 21.6 16.1 3.6 12.5 11.9 

pH, field, [lab] 4.76 4.61 4.59 4.86 4.58 4.5 

Eh (V) 0.035 0.338 0.134 0.12 0.323 0.226 

Spec Cond (PS/cm) field, [lab] 977 956 990 928 973 949 

TDS (mg/L) 780 740 770 690 760 ---

Constituent, dissolved (mg/L) 

Ca 150 140 130 130 130 ---

Mg 38 38 35 32 33 ---

Ba < 0.01 0.02 0.011 0.011 0.01 ---

Na 16 16 16 16 16 ---

K 2.4 2.6 2.5 2.5 2.1 ---

SO4 530 510 520 490 520 ---

Alkalinity (as HCO3) 14 5.1 < 5 < 5 < 5 ---

F 2.3 3.1 2.3 1.8 2.2 ---

Cl 12 9.1 8.9 10 7.8 ---

SiO2 20 21 21 18 21 ---

Al 7.2 7.8 7.8 5.1 7.3 ---

Fe 0.16 < 0.1 < 0.1 0.094 0.023 ---

Mn 3.1 2.4 2.3 1.9 2.2 ---

Cu 0.031 0.078 0.023 < 0.01 < 0.01 ---

Zn 0.79 0.82 0.76 0.62 0.7 ---

Mo < 0.1 < 0.1 0.023 < 0.1 < 0.1 ---

Cd 0.0052 0.0055 0.0046 0.004 0.0042 ---

Ag < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 ---

Cr < 0.01 < 0.01 0.0023 0.0067 0.0027 ---

Co 0.033 0.03 0.033 0.026 0.026 ---

Ni 0.086 0.092 0.088 0.073 0.086 ---

Pb < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be < 0.004 < 0.004 0.0017 0.0018 0.002 ---

V < 0.01 < 0.01 < 0.01 < 0.01 < 0.01 ---

Se < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 ---

As < 0.005 < 0.005 0.003 < 0.005 < 0.005 ---

Sum cations (meq/L) 9.74 9.16 8.61 8.53 8.50 ---

Sum anions (meq/L) 9.13 8.40 8.68 8.56 8.77 ---

Charge imbalance (percent) 6.46 8.70 -0.76 -0.27 -3.05 ---

204
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area 

Well ID MMW-43A MMW-43A MMW-43A MMW-43A MMW-43A MMW-43A 

Sample Date 6/14/01 9/7/01 10/23/01 1/30/02 4/15/02 7/17/02 

Miscellaneous information filtered filtered filtered filtered filtered ---

Comments --- --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) 8,098 8,097 8,084 --- 8,078 ---

Field Temperature (

o

C) 9.7 14.2 15.6 7.7 17.6 23 

pH, field, [lab] 6.43 6.88 6.89 7.02 6.9 6.84 

Eh (V) 0.039 -0.032 -0.017 -0.013 -0.024 -0.053 

Spec Cond (PS/cm) field, [lab] 2,170 2,180 2,320 2,050 2,140 2,160 

TDS (mg/L) 2,000 2,000 2,000 1,800 1,900 ---

Constituent, dissolved (mg/L) 

Ca 470 450 430 400 400 ---

Mg 92 92 95 78 79 ---

Ba 0.037 0.042 0.055 0.033 0.044 ---

Na 33 32 34 34 33 ---

K 5.2 5.5 5.2 4.9 5 ---

SO4 1,200 1,200 1,200 1,100 1,200 ---

Alkalinity (as HCO3) 230 240 240 210 230 ---

F 1.9 1.7 1.5 2 1.5 ---

Cl 14 14 14 13 13 ---

SiO2 24 24 24 26 30 ---

Al 0.13 < 0.05 < 0.05 0.052 1.6 ---

Fe 3.2 3 2.9 2.5 5.7 ---

Mn 3.1 3.1 2.9 2.7 2.9 ---

Cu < 0.01 < 0.01 < 0.01 < 0.01 0.0034 ---

Zn 0.093 0.069 0.098 0.11 0.17 ---

Mo < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 ---

Cd < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 ---

Ag < 0.002 < 0.002 < 0.002 0.0011 < 0.002 ---

Cr < 0.01 < 0.01 < 0.01 0.0016 0.012 ---

Co < 0.01 < 0.01 0.0032 0.0034 0.0035 ---

Ni < 0.02 < 0.02 < 0.0071 0.013 0.022 ---

Pb < 0.003 < 0.003 < 0.003 < 0.003 0.0014 ---

Hg < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 ---

Be < 0.004 < 0.004 0.00027 0.00074 0.0014 ---

V < 0.01 < 0.01 < 0.01 < 0.01 0.0017 ---

Se < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 ---

As < 0.005 < 0.005 0.0025 < 0.005 < 0.005 ---

Sum cations (meq/L) 24.7 23.5 22.9 21.3 20.5 ---

Sum anions (meq/L) 21.1 21.1 21.1 20.0 21.3 ---

Charge imbalance (percent) 15.7 10.7 7.78 6.62 -3.86 ---

205
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area 

Well ID 

Sample Date 

Miscellaneous information 

Mill Well No. 1 

3/12/92 

URS sites RGC 

2001 

Mill Well 

No. 1 

4/23/94 

URS sites 

RGC 2001 

Mill Well No. 

1 

7/25/94 

---

Mill Well No. 1 

11/8/94 

MFQ270 & MFQ265 

Mill Well No. 1 

11/8/94 

filtered, Dissolved and 

Total 

Comments --- --- --- "Molycorp Mill 

Well" Molycorp 

general well 

---

Source ID (see table 2) MC DB, URS 

3/01 

MC DB, 

URS 3/01 

SRK 1995, 

Slifer 1996, 

MC DB 

Kent 1995, Slifer 

1996 

WC 96, MC DB 

Lab ID (see table 2) --- --- --- SLD/ACZ ETC 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

---

---

6.7 

226 

---

---

---

---

---

5.9 

440 

---

---

---

---

---

6.6 

204 

---

---

---

---

6 

6 

202 

---

---

---

---

6.3 

335 

[245] 

---

---

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

95 

< 0.05 

0.11 

< 0.01 

0.03 

< 0.02 

< 0.01 

< 0.05 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

218 

0.07 

0.46 

0.22 

0.01 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

104 

< 0.5 

0.138 

0.05 

< 0.01 

0.035 

< 0.03 

< 0.005 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

43.7 [45.7] 

8.88 [9.19] 

0.021 [0.0222] 

5.14 [4.81] 

0.771 [0.941] 

0.144 [0.716] 

ND [0.273] 

0.11 [0.108] 

0.0049 [0.0216] 

0.041 [0.0461] 

ND 

ND 

ND 

ND 

ND 

ND [0.0031 J] 

ND 

ND 

ND 

ND 

ND 

---

---

---

---

---

---

---

---

42.1 [42] 

8.64 [8.57] 

0.0167 [0.0168] 

4.74 [4.71] 

0.728 [0.724] 

93.8 J 

57 

< 5 

0.214 [0.727] 

0.0542 U [0.15] 

0.105 [0.0993] 

< 0.008 [0.0087 J] 

0.039 [0.0372] 

< 0.002 [<0.002] 

< 0.0024 [<0.0024] 

< 0.0061 [0.0061] 

0.0034 J [<0.0029] 

< 0.0042 [<0.0042] 

< 0.0053 [<0.0053] 

< 0.0019 [<0.0019] 

< 0.0001 [<0.0001] 

< 0.0002 [<0.002] 

< 0.002 [<0.002] 

0.0025 UJ [0.0025UJ] 

0.0024 UJ [0.0024 UJ] 

2.85 

2.67 

---

---

Charge imbalance (percent) --- --- --- --- 6.27 

206
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area 

Well ID Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. 

1 1 1 1 1 1 1 

Sample Date 10/29/96 9/1/97 9/9/97 3/9/98 4/30/98 10/20/98 2/25/99 

Miscellaneous information --- --- --- --- --- --- ---

Comments --- --- --- --- --- --- ---

Source ID (see table 2) MC DB RGC 8/10 MC DB Vail Vail Vail Vail 

Lab ID (see table 2) --- --- --- --- --- --- ---

Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (

o

C) --- --- 7.7 --- --- --- ---

pH, field, [lab] --- 5.7 4.9 5.2 5.2 5.6 5.6 

Eh (V) --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- 675 609 636 558 597 

TDS (mg/L) --- 400 555 --- --- --- ---

Constituent, dissolved (mg/L) 

Ca --- --- 81.3 --- --- --- ---

Mg --- --- 23.6 20.1 --- --- ---

Ba --- --- < 1 --- --- --- ---

Na --- --- 9.1 --- --- --- ---

K --- --- 1.3 --- --- --- ---

SO4 236 285 370 290 330 285 ---

Alkalinity (as HCO3) --- --- --- --- --- --- ---

F --- 0.8 1.24 0.9 1.18 0.78 ---

Cl --- --- < 10 --- --- --- ---

SiO2 --- --- 4.2 --- --- --- ---

Al --- 0.7 5.1 3.9 --- 4.4 ---

Fe --- < 0.2 < 0.2 --- --- --- ---

Mn --- 0.8 1.1 0.9 1 --- ---

Cu --- < 0.25 < 0.25 --- --- < 0.25 ---

Zn --- < 0.25 0.38 0.3 0.31 0.26 ---

Mo --- < 0.02 < 0.02 --- --- < 0.1 ---

Cd --- < 0.005 < 0.005 --- --- --- ---

Ag --- --- --- --- --- --- ---

Cr --- --- --- --- --- --- ---

Co --- 0.02 < 0.02 --- --- --- ---

Ni --- 0.04 < 0.02 --- --- --- ---

Pb --- < 0.02 < 0.02 --- --- --- ---

Hg --- --- --- --- --- --- ---

Be --- --- --- --- --- --- ---

V --- --- --- --- --- --- ---

Se --- --- --- --- --- --- ---

As --- --- < 0.001 --- --- --- ---

Sum cations (meq/L) --- --- 5.71 --- --- --- ---

Sum anions (meq/L) --- --- 6.43 --- --- --- ---

Charge imbalance (percent) --- --- -11.8 --- --- --- ---

207
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area 

Well ID Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. 

1 1 1 1 1 1 

Sample Date 10/13/99 3/15/00 3/23/00 9/6/00 11/3/00 6/6/02 

Miscellaneous information --- --- --- --- --- No analytical 

info 

Comments --- --- --- --- --- ---

Source ID (see table 2) Vail Vail MC DB Vail Vail MC CD 

Lab ID (see table 2) --- --- --- --- --- Paragon 

Analytics 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- --- 9 

pH, field, [lab] 6.52 6.4 6.03 --- --- 5.77 

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 355 428 --- 519 522 570 

TDS (mg/L) --- --- --- --- --- ---

Constituent, dissolved (mg/L) 

Ca --- --- --- --- --- ---

Mg --- 14 --- 0.56 --- ---

Ba --- --- --- --- --- ---

Na --- --- --- --- --- ---

K --- --- --- --- --- ---

SO4 145 190 --- 275 270 ---

Alkalinity (as HCO3) --- --- --- --- --- ---

F --- --- --- --- --- ---

Cl --- --- --- --- --- ---

SiO2 --- --- --- --- --- ---

Al --- < 0.1 --- 7.8 [0.2] 6.9 [0.18] ---

Fe --- --- --- --- --- ---

Mn --- 0.37 --- 2.4 2.3 ---

Cu --- --- --- --- --- ---

Zn --- 0.14 --- --- --- ---

Mo --- 2.2 --- --- --- ---

Cd --- --- --- --- --- ---

Ag --- --- --- --- --- ---

Cr --- --- --- --- --- ---

Co --- --- --- --- --- ---

Ni --- --- --- --- --- ---

Pb --- --- --- --- --- ---

Hg --- --- --- --- --- ---

Be --- --- --- --- --- ---

V --- --- --- --- --- ---

Se --- --- --- --- --- ---

As --- --- --- --- --- ---

Sum cations (meq/L) --- --- --- --- --- ---

Sum anions (meq/L) --- --- --- --- --- ---

Charge imbalance (percent) --- --- --- --- --- ---

208
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area 

Well ID Mill Well Mill Well Mill Well Mill Well Mill Well Mill Well Mill Well Mill Well 

No. 1A No. 1A No. 1A No. 1A No. 1A No. 1A No. 1A No. 1A 

Sample Date 3/12/92 4/16/94 9/1/97 9/9/97 3/9/98 10/20/98 2/25/99 9/27/99 

Miscellaneous information URS sites --- --- --- --- --- --- ---

RGC 2001 

Comments --- --- --- --- --- --- --- ---

Source ID (see table 2) MC DB, MC DB, RGC 8/10 MC DB Vail Vail Vail Vail 

URS 3/01 URS 3/01 

Lab ID (see table 2) --- --- --- --- --- --- --- ---

Depth to Water (m) --- --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- --- ---

Field Temperature (

o

C) --- --- --- 9.4 --- --- --- ---

pH, field, [lab] 4.9 5.2 4.6 5.7 5.1 4.8 5.5 ---

Eh (V) --- --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- 535 841 672 605 554 

TDS (mg/L) 593 500 555 400 --- --- --- ---

Constituent, dissolved (mg/L) 

Ca --- --- --- 66 --- --- --- ---

Mg --- --- --- 17.5 30.8 --- --- ---

Ba --- --- --- < 1 --- --- --- ---

Na --- --- --- 7.7 --- --- --- ---

K --- --- --- 1.2 --- --- --- ---

SO4 406 238 370 285 440 370 --- ---

Alkalinity (as HCO3) --- --- --- 12 --- --- --- ---

F 1 1 1.2 0.81 1.3 1.09 --- ---

Cl --- --- --- < 10 --- --- --- ---

SiO2 --- --- --- 34.2 --- --- --- ---

Al --- --- 5.1 0.7 [8.5] [5.5] --- ---

Fe 0.05 0.17 < 0.2 < 0.2 --- --- --- ---

Mn 1.11 1.1 1.1 0.8 1.4 --- --- ---

Cu < 0.01 --- < 0.25 < 0.25 --- < 0.25 --- ---

Zn 0.35 0.36 0.4 < 0.25 0.53 0.44 --- ---

Mo < 0.02 0.01 < 0.02 < 0.02 --- < 0.1 --- ---

Cd < 0.01 --- < 0.005 < 0.005 --- --- --- ---

Ag --- --- --- --- --- --- --- ---

Cr --- --- --- --- --- --- --- ---

Co --- --- < 0.02 < 0.02 --- --- --- ---

Ni --- --- 0.05 < 0.02 --- --- --- ---

Pb < 0.05 --- < 0.02 < 0.02 --- --- --- ---

Hg --- --- --- --- --- --- --- ---

Be --- --- --- --- --- --- --- ---

V --- --- --- --- --- --- --- ---

Se --- --- --- --- --- --- --- ---

As --- --- --- < 0.001 --- --- --- ---

Sum cations (meq/L) --- --- --- 4.38 --- --- --- ---

Sum anions (meq/L) --- --- --- 5.34 --- --- --- ---

Charge imbalance (percent) --- --- --- -19.9 --- --- --- ---

209
---

--- --- --- --- --- --- ---

--- --- --- --- --- --- ---

--- --- --- --- --- ---

--- --- ---

--- --- --- --- --- --- ---

--- --- ---

--- --- --- --- --- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Mill Area Mill Area 

Well ID Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. Mill Well No. Lab Well 

1A 1A 1A 1A 1A 1A 

Sample Date 10/13/99 3/15/00 3/23/00 9/6/00 11/3/00 6/6/02 3/19/02 

Miscellaneous information --- --- --- off --- filtered Lab Well 

(New Mill 

Well) 

Comments --- --- --- --- --- ---

Source ID (see table 2) Vail Vail MC DB Vail Vail MC CD 

Lab ID (see table 2) --- --- --- --- --- Paragon 

Analytics 

MC CD 

Paragon

Analytics

180 

44

7

0.042

3.8

1.1

57 

83 

0.51 

1.6 

10 

< 0.05

< 0.1

0.0058

0.048

0.029

< 0.1

< 0.001

< 0.002

< 0.01

< 0.01

< 0.02

< 0.003

< 0.0002

< 0.004

0.00078

< 0.005

< 0.005

2.82 

2.47 

13.2 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

4.67 

551 

4.9 

613 

5.9 

597 

9.4 

5.74 

561 

Constituent, dissolved (mg/L) 

Ca --- --- --- --- --- ---

Mg 22 14 --- --- --- ---

Ba --- --- --- --- --- ---

Na --- --- --- --- --- ---

K --- --- --- --- --- ---

SO4 283 325 --- --- 360 ---

Alkalinity (as HCO3) --- --- --- --- --- ---

F 1 --- --- --- --- ---

Cl --- --- --- --- --- ---

SiO2 --- --- --- --- --- ---

Al 4.2 4.2 [4.6] --- --- 5.1 [0.37] ---

Fe --- --- --- --- --- ---

Mn 1 0.37 --- --- 5.2 ---

Cu --- --- --- --- --- ---

Zn 0.45 0.14 --- --- --- ---

Mo --- 0.9 --- --- --- ---

Cd --- --- --- --- --- ---

Ag --- --- --- --- --- ---

Cr --- --- --- --- --- ---

Co --- --- --- --- --- ---

Ni --- --- --- --- --- ---

Pb --- --- --- --- --- ---

Hg --- --- --- --- --- ---

Be --- --- --- --- --- ---

V --- --- --- --- --- ---

Se --- --- --- --- --- ---

As --- --- --- --- --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

---

---

---

---

---

---

Charge imbalance (percent) --- --- --- --- --- ---

210
--- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Hansen Creek on River Elephant Rock Campground 

Well ID Well 8 GW-9 GW-9 GW-9 

Sample Date 

Miscellaneous information 

6/1/99 

field duplicates inconsistent 

5/17/91 

---

8/24/93 

unfiltered 

11/8/94 

filtered 

Comments see EPA symbol key 

Source ID (see table 2) EPA memo 

Lab ID (see table 2) EPA Lab ID: SWOK 

---

USFS

---

 Slifer 1996 

Fawn Lake CG "on SMA map 

directly east of Fawn Lakes in 

Elephant Rock CG" 

WC 96, MC DB, RGC 8/10 

CEP --- ETC 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

---

---

---

---

---

---

---

114 

35.6 

0.0067 

9.28 

1.37 

---

---

---

---

---

---

---

---

---

[0.03] 

---

---

---

---

---

7.1 

160 

---

---

---

---

---

---

---

---

---

5.8 

255 

31.3 

6.12 

0.0278 

3.62 

0.655 

---

---

---

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

18.1 

0.076 J 

2.67 

0.0708 

0.723 

0.0029 

< 0.001 

< 0.001 

0.0554 

0.143 

< 0.0002 

0.00025 Jb 

0.003 

< 0.001 

< 0.003 

< 0.003 

---

---

---

---

---

< 0.10 

[ < 0.001] 

[ <0.03] 

[ <0.03] 

[ <0.001] 

[ <0.0004] 

[ <0.01] 

[ <0.01] 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

60 

[< 0.1] 

[0.1] 

[< 0.05] 

[< 0.005] 

[0.15] 

[< 1.0] 

[ < 0.001] 

[<0.005] 

[< 0.1] 

[ <0.005] 

---

---

---

---

---

---

---

---

---

---

---

---

---

50 

59 

< 5 

0.0543 

0.0542 

0.0017 

< 0.008 

0.0952 

< 0.02 

< 0.0024 

< 0.0061 

< 0.0029 

< 0.0042 

< 0.0053 

< 0.0019 

< 0.0001 

< 0.0002 

< 0.002 

< 0.0025 

< 0.0024 

2.15 

1.91 

---

---

Charge imbalance (percent) --- 11.9 

211
--- ---

--- ---

--- ---

--- ---

--- ---

--- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Elephant Rock Campground Fawn Lakes campground 

Well ID GW-9 GW-9 Fawn Lakes CG Fawn Lakes CG 

Sample Date 11/8/94 11/8/94 8/24/93 6/11/01 

Miscellaneous information "MFQ268"; filtered unfiltered from lab sheet; GW/A/1 

Drinking Water Well 

at CG 

Comments filtered Drinking Water Well 

at CG 

Source ID (see table 2) Kent 1995 RGC 8/10 

Lab ID (see table 2) SLD/ACZ ETC 

Depth to Water (m) --- ---

Water Elevation (ft) --- ---

Field Temperature (

o

C) 6 5.8 

pH, field, [lab] 5.5 ---

Eh (V) --- ---

Spec Cond (PS/cm) field, [lab] 150 255 

TDS (mg/L) --- ---

Constituent, dissolved (mg/L) 

Ca 33.9 ---

Mg 6.6 ---

Ba 0.0329 ---

Na 3.87 ---

K 0.792 ---

--- Red River Headwaters - Fawn 

Lakes campground 

Slifer 1996 USFS 

--- Ecology & Environment 

0106128-25A 

6.9 ---

230 ---

--- 39.1 

--- 7.88 

--- 0.022 

--- 4.54 

--- 1.03 

SO4 --- 50 105 ---

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl --- --- --- ---

SiO2 --- --- --- ---

Al --- < 0.028 [< 0.1] <0.2 

Fe 0.0971 0.1 [0.1] 0.339 

Mn 0.0056 0.01 [< 0.05] 0.0107 

Cu 0.005 0.005 [< 0.005] 0.0137 J 

Zn 0.107 0.11 [< 0.1] 0.131 

Mo --- < 0.02 [< 0.1] ---

Cd --- < 0.0039 [ < 0.001] <0.005 

Ag --- --- --- <0.01 

Cr --- < 0.0037 --- <0.01 

Co --- < 0.0046 [<0.005] <0.02 

Ni --- < 0.0167 [< 0.1] 0.00422 J 

Pb [0.0015] < 0.0009 [ <0.005] 0.00411 J 

Hg --- --- --- <0.0002 

Be --- --- --- <0.005 

V --- --- --- <0.02 

Se --- --- --- <0.02 

As --- --- --- <0.025 

Sum cations (meq/L) --- --- --- ---

Sum anions (meq/L) --- --- --- ---

Charge imbalance (percent) --- ---

212
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 11/11/82 1/20/83 1/28/83 2/22/84 

Miscellaneous information Water bearing formation: AWWT 1 "RR sample represents Chlorinated treated 

fractured rock from 198 to WWTP" Monitoring untreated water water 

200ft Well in Straight 

Comments --- cations analyzed low "Private Well" is SO4 result "by 

AWWT-1 accd to difference" 

Russell Church 

Source ID (see table 2) AWWT, Culp/ Wesner/ TRR TRR TRR 

Culp, Russell Church 

Lab ID (see table 2) Industrial Laboratories Culp Wesner & Culp Culligan Water COND. Culligan 

Company Inc. 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) --- --- --- ---

pH, field, [lab] --- --- 3.5 3 

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- 1,180 1,380 

TDS (mg/L) 985 1,000 750 920 

Constituent, dissolved (mg/L) 

Ca 135 22 290 390 

Mg 48 28 155 194 

Ba 0.4 0.3 --- ---

Na 32 10 30 37 

K 3 2.5 4 4 

SO4 705 660 572 ---

Alkalinity (as HCO3) < 3.0 < 1 --- ---

F 1.4 1.4 --- ---

Cl 4.3 4.5 4 10 

SiO2 --- --- 72.8 98.4 

Al --- --- --- ---

Fe 60 --- 12 45 

Mn 3.9 1 3.6 5.2 

Cu --- --- 0.1 0.09 

Zn --- --- 2 2 

Mo --- --- --- ---

Cd < 0.01 0.005 --- ---

Ag < 0.01 0.001 --- ---

Cr < 0.01 [0.002] --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb 0.02 0.002 --- ---

Hg < 0.001 < 0.001 --- ---

Be --- --- --- ---

V --- --- --- ---

Se < 0.01 0.01 --- ---

As < 0.01 0.03 --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

12.6 

11.6 

4.10 

12.7 

25.4 

7.78 

---

---

Charge imbalance (percent) 8.34 999 106 ---

213
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 2/22/84 2/22/84 1/6/85 7/22/85 1/16/86 

Miscellaneous information Filtered Water!! Raw Untreated AWWT 1 is MW; --- ---

Water GW 10; "north of 

Hetentot" accd MC 

Comments ~ SO4 result "by ~ SO4 result "by --- --- ---

difference" difference" 

Source ID (see table 2) TRR TRR TRR TRR TRR 

Lab ID (see table 2) Culligan Culligan CEP CEP CEP 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] 2.9 2.9 --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] 1,400 1,420 --- --- ---

TDS (mg/L) 930 940 1,440 1,520 1,360 

Constituent, dissolved (mg/L) 

Ca 350 340 --- --- ---

Mg 190 186 --- --- ---

Ba --- --- --- --- ---

Na 33 34 --- --- ---

K 4 4 --- --- ---

SO4 --- --- 640 880 730 

Alkalinity (as HCO3) --- --- --- --- ---

F --- --- --- --- ---

Cl 14 10 4 4 3 

SiO2 107 98.4 --- --- ---

Al --- --- --- --- ---

Fe 39 41 --- --- ---

Mn 5 4.8 --- --- ---

Cu 0.39 0.31 --- --- ---

Zn 1.9 1.8 --- --- ---

Mo --- --- --- --- ---

Cd --- --- --- --- ---

Ag --- --- --- --- ---

Cr --- --- --- --- ---

Co --- --- --- --- ---

Ni --- --- --- --- ---

Pb --- --- --- --- ---

Hg --- --- --- --- ---

Be --- --- --- --- ---

V --- --- --- --- ---

Se --- --- --- --- ---

As --- --- --- --- ---

Sum cations (meq/L) --- --- --- --- ---

Sum anions (meq/L) --- --- --- --- ---

Charge imbalance (percent) --- --- --- --- ---

214
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 2/2/87 8/13/87 9/8/87 1/25/88 

Miscellaneous information --- samples collected Basement Tap of Samples collected 

8/7_12_20/87, Sulfate RRTP; Not Filtered, 1/22_ 24_ 27/88 

reported here is a factor Not acidified 

Comments --- *TDS 1279 & SO4 7802 --- ---

mg/L but noted SO4 a 

factor of 10 high - no 

Source ID (see table 2) TRR TRR NMED TRR 

Lab ID (see table 2) in house AWWT Facility lab and "at AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab 

other lab" by same technician 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) --- --- --- ---

pH, field, [lab] --- --- 4.2 4 

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- ---

TDS (mg/L) 1,100 # 1,280 # 1,330 # 1,220 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- ---

Mg --- --- --- ---

Ba --- --- --- ---

Na --- --- --- ---

K --- --- --- ---

SO4 925 780 # * 810 758 

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl 2.6 11.4 27.6 1.5 

SiO2 --- --- --- ---

Al --- --- --- ---

Fe --- --- --- ---

Mn --- --- --- ---

Cu --- --- --- ---

Zn --- --- --- ---

Mo --- --- --- ---

Cd --- --- --- ---

Ag --- --- --- ---

Cr --- --- --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb --- --- --- ---

Hg --- --- --- ---

Be --- --- --- ---

V --- --- --- ---

Se --- --- --- ---

As --- --- --- ---

Sum cations (meq/L) --- --- --- ---

Sum anions (meq/L) --- --- --- ---

Charge imbalance (percent) --- --- --- ---

215
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 

Miscellaneous information 

Comments 

Source ID (see table 2) 

8/15/88 

Samples collected 

8/6_ 17_ 19/88 

TRR 

---

1/13/89 

Samples collected 1/5/_ 

20_ 21/89 

TRR 

---

7/11/89 

Samples collected 7/11/89 & 

8/19_20/89 

TRR 

---

1/30/90 

Samples collected 

1/30/90_ 

3/17_18/90, * SO4 

*1 SO4 reported at 

110.0 mg/L by 

AWWT supervisor 

TRR 

Lab ID (see table 2) AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab AWWT Facility 

Lab 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

---

---

---

---

---

1,420 

---

---

---

---

---

---

1,310 # 

---

---

---

---

---

---

1,540 # 

---

---

---

---

---

---

1,370 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- ---

Mg --- --- --- ---

Ba --- --- --- ---

Na --- --- --- ---

K --- --- --- ---

SO4 655 753 840 1,100 *1 

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl 2.5 5.5 15 5.2 

SiO2 --- --- --- ---

Al --- --- --- ---

Fe --- --- --- ---

Mn --- --- --- ---

Cu --- --- --- ---

Zn --- --- --- ---

Mo --- --- --- ---

Cd --- --- --- ---

Ag --- --- --- ---

Cr --- --- --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb --- --- --- ---

Hg --- --- --- ---

Be --- --- --- ---

V --- --- --- ---

Se --- --- --- ---

As --- --- --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

---

---

Charge imbalance (percent) --- --- --- ---

216
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 1/17/91 7/22/91 1/21/92 7/27/92 

Miscellaneous information Sample dates Samples collected Samples collected 1/16_ Samples collected 7/24_ 

1/7_ 8_ 28/91 7/17_ 26/91 27/92 30/92 

Comments pH field 3.9 - pH field 3.9 - 4.0 *SO4 reported here is a *SO4 reported here is a 

4.03 factor of 10 lower than factor of 10 lower than 

original report original report 

Source ID (see table 2) TRR TRR TRR TRR 

Lab ID (see table 2) AWWT Facility AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab 

Lab 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) --- --- --- ---

pH, field, [lab] 3.9 3.9 --- ---

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- ---

TDS (mg/L) 1,330 # 1,410 # 1,290 # 1,270 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- ---

Mg --- --- --- ---

Ba --- --- --- ---

Na --- --- --- ---

K --- --- --- ---

SO4 808 873 # 852 # * 769 * 

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl 2.02 4.5 4.6 5.52 

SiO2 --- --- --- ---

Al --- --- --- ---

Fe --- --- --- ---

Mn --- --- --- ---

Cu --- --- --- ---

Zn --- --- --- ---

Mo --- --- --- ---

Cd --- --- --- ---

Ag --- --- --- ---

Cr --- --- --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb --- --- --- ---

Hg --- --- --- ---

Be --- --- --- ---

V --- --- --- ---

Se --- --- --- ---

As --- --- --- ---

Sum cations (meq/L) --- --- --- ---

Sum anions (meq/L) --- --- --- ---

Charge imbalance (percent) --- --- --- ---

217
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 

Miscellaneous information 

1/26/93 

Samples collected 

1/26_27/93 

7/22/91 

Samples collected 7/21 -

23/93 

1/19/94 

Samples collected 1/10_ 

22_ 27/94 

7/18/94 

Samples collected 7/9_ 

27/94 

Comments 

Source ID (see table 2) 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

Lab ID (see table 2) AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

---

---

---

---

---

1,350 # 

---

---

---

---

---

---

1,330 

---

---

---

---

---

---

1,290 # 

---

---

---

---

---

---

1,430 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- ---

Mg --- --- --- ---

Ba --- --- --- ---

Na --- --- --- ---

K --- --- --- ---

SO4 843 # 864 # 810 # 831 # 

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl 4.17 7.33 5.72 4.2 

SiO2 --- --- --- ---

Al --- --- --- ---

Fe --- --- --- ---

Mn --- --- --- ---

Cu --- --- --- ---

Zn --- --- --- ---

Mo --- --- --- ---

Cd --- --- --- ---

Ag --- --- --- ---

Cr --- --- --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb --- --- --- ---

Hg --- --- --- ---

Be --- --- --- ---

V --- --- --- ---

Se --- --- --- ---

As --- --- --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

---

---

Charge imbalance (percent) --- --- --- ---

218
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 

Sample Date 11/8/94 11/8/94 11/8/94 

Miscellaneous information MFQ267; Filtered; Updated 1-24- filtered, Dissolved Totals found in WQ for Red 

03 River (Vail, Oct 94) table D3 of 

SPRI 

Comments *1 NMED did not measure SO4 *1 Cu =0.0451, MC DB 45.1, *2 *1 Al susp. < 0.5 mg/L 

accd to Kent 1995 Co=0.0925 in WC, MC DB reports 92.5, 

*3 Be=0.0056, MC DB 0.0055 

Source ID (see table 2) Kent 1995, Slifer 1996 WC 96, MC DB, RGC 8/13 SPRI 1995 

Lab ID (see table 2) SLD/ACZ ETC ETC 

Depth to Water (m) --- --- ---

Water Elevation (ft) --- --- ---

Field Temperature (

o

C) 11 9.6 9.6 

pH, field, [lab] 3.85 3.85 3.85 

Eh (V) --- --- ---

Spec Cond (PS/cm) field, [lab] 1,200 1,420 # 1,420 # 

TDS (mg/L) --- 1,410 1,470 # 

Constituent, dissolved (mg/L) 

Ca 151 [151] 151 [157] ---

Mg 51.5 [52] 48.8 [49] ---

Ba 0.0111 [0.0053] 0.0034 J [0.0019 J] ---

Na 15.1 [14.9] 14.7 [14.8] ---

K 2.54 [3] 2.55 J [3] ---

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

* 1 

36.5 [36.7] 

30.1 [30.2] 

5.7 [5.72] 

0.0583 [0.0608] 

2.09 [2.09] 

0.0061 J [0.0078 J] 

ND 

0.0058 [0.0085] 

0.0974 [0.101] 

0.227 [0.232] 

0.0037 J [0.0036 J] 

ND 

0.0051 

ND 

ND 

ND 

---

---

---

---

---

---

---

---

907 

< 5 

6 

37.5 [39.5] 

32 [33] 

5.91 [6.19] 

0.0451 *1 [0.0525] 

1.96 [1.97] 

0.033 J [0.035 J] 

0.0055 [0.0049 J] 

< 0.0061 [<0.0061] 

0.0114 [0.0116] 

0.0925 *2 [0.0953] 

0.223 [0.224] 

< 0.0019 [<0.0019] 

< 0.0001 [<0.0001] 

0.0055 *3 

< 0.002 [<0.002] 

< 0.0025 [<0.0025] 

< 0.0024 [0.0024 UJ] 

12.5 

13.5 

-7.7 

---

---

788 

1.6 

36 *1 

[4.6] 

[5.2] 

[0.06] 

[1.6] 

[< 0.1] 

[0.012] 

[< 0.1] 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

219
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 

Miscellaneous information 

1/15/95 

Samples collected 1/14_ 

15_16/95 

7/15/95 

Samples collected 7/7_ 

22_ 23/95 

1/19/96 

Samples collected 1/11_ 

13_ 27/96 

7/20/96 

Samples collected 

7/12_ 29/96 

Comments 

Source ID (see table 2) 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

*SO4 reported here is a 

factor of 10 lower than 

original report 

TRR 

---

TRR 

Lab ID (see table 2) AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab AWWT Facility Lab 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

---

---

---

---

---

1,310 # 

---

---

---

---

---

---

1,420 # 

---

---

---

---

---

---

1,210 # 

---

---

---

---

---

---

1,400 # 

Constituent, dissolved (mg/L) 

Ca --- --- --- ---

Mg --- --- --- ---

Ba --- --- --- ---

Na --- --- --- ---

K --- --- --- ---

SO4 768 # 822 # 818 # 750 

Alkalinity (as HCO3) --- --- --- ---

F --- --- --- ---

Cl 4.58 15 5.4 6.1 

SiO2 --- --- --- ---

Al --- --- --- ---

Fe --- --- --- ---

Mn --- --- --- ---

Cu --- --- --- ---

Zn --- --- --- ---

Mo --- --- --- ---

Cd --- --- --- ---

Ag --- --- --- ---

Cr --- --- --- ---

Co --- --- --- ---

Ni --- --- --- ---

Pb --- --- --- ---

Hg --- --- --- ---

Be --- --- --- ---

V --- --- --- ---

Se --- --- --- ---

As --- --- --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

---

---

Charge imbalance (percent) --- --- --- ---

220
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 10/8/96 1/5/97 7/26/97 11/3/97 1/30/98 

Miscellaneous information NON Samples collected 7/22_ 30/97 --- **RC used outside 

PRESERVED 1/3_ 7/97 different Lab instead 

of self to 

Comments NOT **RC used outside --- ---

FILTERED Lab instead of self to 

analyze 

analyze from here on 

out 

Source ID (see table 2) NMED: SLD TRR TRR TRR TRR, RGC 8/13 

lab sheet 

Lab ID (see table 2) SLD WC 96 AWWT Facility Lab Triple Point Triple Point Paragon Analytics 

5767 Laboratories Laboratories 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] --- --- --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- --- ---

TDS (mg/L) 1,310 1,360 # 1,280 # 1,400 1,210 # 

Constituent, dissolved (mg/L) 

Ca [171] --- --- --- ---

Mg [57] --- --- --- ---

Ba --- --- --- --- ---

Na [14] --- --- --- ---

K [14] --- --- --- ---

SO4 843 850 # 22 1,100 1,070 # 

Alkalinity (as HCO3) ND --- --- --- ---

F --- --- --- --- ---

Cl [7] 5.7 5.1 5.2 3.6 

SiO2 --- --- --- --- ---

Al --- --- --- --- ---

Fe --- --- --- --- ---

Mn --- --- --- --- ---

Cu --- --- --- --- ---

Zn --- --- --- --- ---

Mo --- --- --- --- ---

Cd --- --- --- --- ---

Ag --- --- --- --- ---

Cr --- --- --- --- ---

Co --- --- --- --- ---

Ni --- --- --- --- ---

Pb --- --- --- --- ---

Hg --- --- --- --- ---

Be --- --- --- --- ---

V --- --- --- --- ---

Se --- --- --- --- ---

As --- --- --- --- ---

Sum cations (meq/L) 

Sum anions (meq/L) 

11.8 

13.9 

---

---

---

---

---

---

---

---

Charge imbalance (percent) -16.4 --- --- --- ---

221
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 7/20/98 1/27/99 7/27/99 1/19/00 4/13/00 9/6/00 

Miscellaneous information --- --- --- --- --- ---

Comments --- --- --- --- *1 Ba = 0.0016, ---

0.016, *2 Cu =0.01, < 

0.01DB, *3 Pb 

0 003 0 003 DB Source ID (see table 2) TRR TRR TRR TRR MC DB, RGC 8/10, 

RGC 8/13 

TRR 

Lab ID (see table 2) Paragon Paragon Paragon Paragon Paragon Analytics Paragon 

Analytics Analytics Analytics Analytics Analytics 

Depth to Water (m) --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- --- ---

pH, field, [lab] --- --- --- --- --- ---

Eh (V) --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- --- --- ---

TDS (mg/L) 1,200 1,300 1,600 1,300 1,300 1,300 

Constituent, dissolved (mg/L) 

Ca --- --- --- --- 160 ---

Mg --- --- --- --- 51 ---

Ba --- --- --- --- 0.0016 * 1 ---

Na --- --- --- --- 15 ---

K --- --- --- --- 2.6 ---

SO4 940 1,000 1,200 870 910 1,000 

Alkalinity (as HCO3) --- --- --- --- < 5 ---

F --- --- --- --- 1.3 ---

Cl 5.8 6.6 4.9 6.2 5.5 5.9 

SiO2 --- --- --- --- 64.2 ---

Al --- --- --- --- 34 ---

Fe --- --- --- --- 36 ---

Mn --- --- --- --- 5.6 ---

Cu --- --- --- --- < 0.01 *2 ---

Zn --- --- --- --- 2.1 ---

Mo --- --- --- --- < 0.1 ---

Cd --- --- --- --- 0.002 ---

Ag --- --- --- --- < 0.002 ---

Cr --- --- --- --- 0.24 ---

Co --- --- --- --- 0.1 ---

Ni --- --- --- --- 0.27 ---

Pb --- --- --- --- < 0.003 *3 ---

Hg --- --- --- --- --- ---

Be --- --- --- --- 0.0053 ---

V --- --- --- --- < 0.01 ---

Se --- --- --- --- < 0.005 ---

As --- --- --- --- < 0.005 ---

Sum cations (meq/L) --- --- --- --- 14.0 ---

Sum anions (meq/L) --- --- --- --- 13.5 ---

Charge imbalance (percent) --- --- --- --- 3.7 ---

222
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-1 AWWT-1 AWWT-1 AWWT-1 AWWT-1 

Sample Date 2/7/01 7/30/01 1/29/02 3/1/02 3/27/02 

Miscellaneous information --- --- --- Filtered Dissolved 

Comments --- --- --- --- ---

Source ID (see table 2) TRR TRR TRR Paragon Analytics lab MC CD 

sheet 

Lab ID (see table 2) Paragon Stewart Environmental Stewart Environmental Paragon Analytics Paragon 

Analytics Consultants Consultants Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] --- --- --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- --- [1,390] 

TDS (mg/L) 1,300 1,640 # 1,260 --- 1300, [1,350] 

Constituent, dissolved (mg/L) 

Ca --- --- --- 160 155 

Mg --- --- --- 52 53.9 

Ba --- --- --- 0.013 0.005 

Na --- --- --- 16 16.1 

K --- --- --- 3.7 2.9 

SO4 940 910 875 910 980 

Alkalinity (as HCO3) --- --- --- --- < 10 

F --- --- --- --- 2.7 

Cl 5.9 12 9 0.51 5 

SiO2 --- --- --- 64.2 ---

Al --- --- --- 36 38.7 

Fe --- --- --- 37 34.4 

Mn --- --- --- 5.7 5.63 

Cu --- --- --- < 0.01 0.0014 

Zn --- --- --- 2.1 2.03 

Mo --- --- --- < 0.1 < 0.0005 

Cd --- --- --- 0.0036 0.0041 

Ag --- --- --- < 0.002 < 0.0005 

Cr --- --- --- 0.099 0.083 

Co --- --- --- 0.11 0.0872 

Ni --- --- --- 0.28 0.27 

Pb --- --- --- 0.003 0.0001 

Hg --- --- --- 0.000054 < 0.001 

Be --- --- --- 0.0049 0.0047 

V --- --- --- 0.002 < 0.03 

Se --- --- --- 0.0067 < 0.005 

As --- --- --- 0.0022 < 0.003 

Sum cations (meq/L) --- --- --- 14.3 13.1 

Sum anions (meq/L) --- --- --- 13.2 14.8 

Charge imbalance (percent) --- --- --- 8.23 -12.5 

223
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID AWWT-2 SC-1A SC-1A SC-1B SC-2B 

Sample Date 10/3/91 3/26/02 3/26/02 3/26/02 3/25/02 

Miscellaneous information well out behind the facility Dissolved Dissolved Dissolved Dissolved 

building; well not completed, 

but depth between 48.8 - 53.3 

Comments --- --- --- --- ---

Source ID (see table 2) TRR, RGC 8-13 MC CD MC CD MC CD MC CD 

Lab ID (see table 2) CEP Paragon Paragon Paragon Paragon 

Analytics Analytics Analytics Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] --- --- --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- [2,800] [2,800] [3,260] [2,570] 

TDS (mg/L) 3,070 3,050 3,090 3,230 2,380 

Constituent, dissolved (mg/L) 

Ca --- 380 378 518 477 

Mg --- 123 122 227 117 

Ba [< 0.03] < 0.02 < 0.02 0.014 0.007 

Na [33.1] 13.9 13.7 61.7 21.2 

K --- 0.7 0.9 13.7 3.8 

SO4 1,790 2,400 2,410 2,020 1,620 

Alkalinity (as HCO3) --- < 10 < 10 405 129 

F 6.6 [6.57] 2.2 2.9 1.7 6.8 

Cl [5.33] 3 3 14 5 

SiO2 --- --- --- --- ---

Al --- 99.5 98.8 < 0.3 1.02 

Fe 0.1 [0.08] 31 31 3 34.7 

Mn 7.68 [7.68] 18.7 18.6 6.08 16.8 

Cu [0.03] 0.891 0.882 0.004 0.0071 

Zn 0.56 [0.56] 6.93 6.92 0.69 1.37 

Mo --- < 0.0005 < 0.0005 0.004 0.0006 

Cd [< 0.001] 0.0319 0.0323 0.0002 0.0002 

Ag [< 0.01] < 0.003 < 0.003 < 0.0005 < 0.0005 

Cr [< 0.03] 0.018 0.0181 0.0015 0.0006 

Co --- 0.268 0.266 0.00695 0.156 

Ni --- 0.68 0.69 < 0.1 0.46 

Pb [0.004] 0.0012 0.0012 < 0.0005 0.0003 

Hg [< 0.0004] < 0.001 < 0.001 < 0.001 < 0.001 

Be --- 0.023 0.023 0.0003 0.0163 

V --- < 0.05 < 0.05 < 0.05 < 0.05 

Se [< 0.01] < 0.005 < 0.005 < 0.005 < 0.005 

As [< 0.01] < 0.003 < 0.003 0.0005 0.0005 

Sum cations (meq/L) --- 25.9 25.7 33.8 25.9 

Sum anions (meq/L) --- 32.8 33.1 35.1 25.8 

Charge imbalance (percent) --- -23.6 -25.3 -3.72 0.49 

224
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Straight Creek 

Well ID SC-3A SC-3B SC-4A SC-5A SC-5B 

Sample Date 3/25/02 3/26/02 3/25/02 3/27/02 3/27/02 

Miscellaneous information Dissolved Dissolved Dissolved, USGS Dissolved Dissolved 

calls this SC-4A 

Comments --- --- --- --- ---

Source ID (see table 2) MC CD MC CD MC CD MC CD MC CD 

Lab ID (see table 2) Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics Paragon Analytics 

Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] --- --- --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] [2,330] [2,970] [2,470] [1,590] [2,370] 

TDS (mg/L) 2,300 2,800 2,390 1,210 2,260 

Constituent, dissolved (mg/L) 

Ca 306 494 292 130 524 

Mg 90.9 152 138 50.8 38 

Ba < 0.02 0.006 < 0.02 < 0.01 0.029 

Na 15.5 31.6 25.6 14 42.7 

K 1.1 2.5 2.9 1.8 4.7 

SO4 1,770 1,970 1,790 930 1,410 

Alkalinity (as HCO3) < 10 83 < 10 < 10 130 

F 1.1 6.8 4.2 < 2.4 1.8 

Cl 10 5 4 5 8 

SiO2 --- --- --- --- ---

Al 85 4.85 57.5 50.1 < 0.3 

Fe 0.53 54.1 50.9 0.41 4.3 

Mn 14.9 23 18.7 5.66 2.66 

Cu 0.799 0.0022 0.072 0.162 0.0026 

Zn 5.29 4.16 5.22 2.23 < 0.1 

Mo 0.0004 0.0001 < 0.0005 < 0.0005 0.005 

Cd 0.0232 0.0005 0.0129 0.0081 < 0.0005 

Ag < 0.003 < 0.001 < 0.001 < 0.0005 < 0.0005 

Cr 0.012 0.0007 0.0022 0.0042 < 0.0007 

Co 0.205 0.204 0.216 0.0971 0.00725 

Ni 0.52 0.43 0.54 0.25 < 0.1 

Pb 0.0006 0.0417 < 0.0005 < 0.0005 < 0.0005 

Hg < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 

Be 0.016 0.0188 0.0146 0.0057 < 0.001 

V < 0.05 < 0.05 < 0.05 < 0.03 < 0.05 

Se < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 

As < 0.03 0.0006 < 0.01 < 0.003 < 0.003 

Sum cations (meq/L) 21.4 28.9 24.1 11.9 22.7 

Sum anions (meq/L) 24.5 29.9 25.4 13.7 23.1 

Charge imbalance (percent) -13.6 -3.13 -5.09 -14.3 -1.79 

225
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Junebug Campground 

Well ID GW-8 GW-8 GW-8 GW-8 

Sample Date 5/22/1991 8/24/1993 11/8/94 11/8/94 

Miscellaneous information --- unfiltered "MFQ269"; Filtered Filtered 

Comments --- --- Drinking Water Well at Drinking Water Well at CG 

CG 

Source ID (see table 2) USFS Slifer 1996 Kent 1995 WC 96, MC DB, RGC 8/10 

Lab ID (see table 2) CEP --- SLD/ACZ ETC 

Depth to Water (m) --- --- --- ---

Water Elevation (ft) --- --- --- ---

Field Temperature (

o

C) --- --- 6 5.8 

pH, field, [lab] --- 6.8 6 ---

Eh (V) --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- 175 163 268 

TDS (mg/L) --- 150 --- 193 

Constituent, dissolved (mg/L) 

Ca --- --- 34.2 32.9 [33] 

Mg --- --- 6.92 6.74 [7] 

Ba [0.04] --- 0.0344 0.0309 [0.0331] 

Na --- --- 4.18 3.95 [3.93] 

K --- --- 0.732 0.676 [1] 

SO4 --- 44 --- 61 

Alkalinity (as HCO3) --- --- --- 57 

F [ <0.10] --- --- ---

Cl --- --- --- < 5 

SiO2 --- --- --- ---

Al --- [< 0.1] --- 0.0621 [0.0641] 

Fe --- [0.7] 0.128 0.124 [3.09] 

Mn --- [0.009] 0.0826 0.0713 [0.0713] 

Cu --- [< 0.005] [0.00547] < 0.008 [0.0324] 

Zn --- [8.6] 0.252 0.247 [0.328] 

Mo --- [< 0.1] --- < 0.02 

Cd [ < 0.001] [ < 0.001] --- < 0.0024 [<0.0024] 

Ag [ <0.03] --- --- < 0.061 [<0.061] 

Cr [ <0.03] --- --- < 0.0029 [0.0031] 

Co --- [<0.005] --- < 0.0042 [<0.0042] 

Ni --- [< 0.1] --- < 0.0053 [<0.0053] 

Pb [ <0.001] [ <0.005] [0.0056] < 0.0019 [0.0055] 

Hg [ <0.0004] --- --- < 0.0001 [<0.0001] 

Be --- --- --- < 0.0002 [<0.0002] 

V --- --- --- < 0.002 [<0.002] 

Se [ <0.01] --- --- 0.0026 [0.0025] 

As [ <0.01] --- --- < 0.0024 [0.0024 UJ] 

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

---

---

2.28 

2.07 

Charge imbalance (percent) --- --- --- 9.63 

226
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Hottentot Creek east of Junebug Campground 

Well ID Private Cabin Well Private Cabin Well 

Sample Date 9/1/94 5/12/00 

Miscellaneous information Private Well along Hottentot Creek east of Northeast of Junebug CG and Hottentot CK 

Junebug CG 

Comments --- RR Private Well "PWRR" 

Source ID (see table 2) Slifer 1996, SRK 1995, MC DB, URS 3/01 RGC 8/10 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

Constituent, dissolved (mg/L) 

Ca 

Mg 

Ba 

Na 

K 

---

---

---

---

6.1 

742 

---

---

---

---

---

---

---

---

---

---

---

6.5 

3,010 

---

---

---

---

---

---

---

SO4 

Alkalinity (as HCO3) 

F 

Cl 

SiO2 

Al 

Fe 

Mn 

Cu 

Zn 

Mo 

Cd 

Ag 

Cr 

Co 

Ni 

Pb 

Hg 

Be 

V 

Se 

As 

Sum cations (meq/L) 

Sum anions (meq/L) 

Charge imbalance (percent) 

276 

ND 

0 

6.5 

1.2 

ND 

3 

0.008 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

1,270 

1.9 

< 0.06 

7.6 

5 

7.6 

0.3 

0.01 

< 0.0005 

0.04 

0.1 

---

---

---

---

---

---

---

---

---

---

---

---

---

---

227
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Pioneer Creek Watershed 

Well ID well #1 well #1 well #2 well #2 well #3 well #3 well #3 

Sample Date 

Miscellaneous information 

5/16/01 

Table PN-6; 

GW/A/4 

10/11/01 

Red River Water 

System 

5/16/01 

Table PN-6 

10/11/01 

Red River Water 

System 

1/20/83 

---

5/16/01 

Table PN-6; 

GW/A/2 

11/28/01 

Red River 

Water System 

Comments 

Source ID (see table 2) 

Dyke Tunnel 

Prospect 

[PN/DTP]

USFS 

"Code # 07129" 

Supply Wells 

PWS 

GW/A/3 

PN/DTP 

USFS 

"Code # 07129" 

Supply Wells 

PWS 

Drinking 

water well 

PWS 

Dyke Tunnel 

Prospect 

[PN/DTP]

USFS 

"Code # 

07129" 

Supply Wells 

PWS 

Lab ID (see table 2) Ecology & --- Ecology & --- --- Ecology & ---

Environment Environment Environment 

105106 20A 105106 19A 105106 18A Depth to Water (m) --- --- --- --- --- --- ---

Water Elevation (ft) --- --- --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- --- --- ---

pH, field, [lab] --- --- --- --- --- --- ---

Eh (V) --- --- --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- --- --- --- ---

TDS (mg/L) --- --- --- --- 180 --- ---

Constituent, dissolved (mg/L) 

Ca 47.0 --- 51.8 --- 13 52.1 ---

Mg 6.23 --- 7.3 --- 8 7.48 ---

Ba 0.0454 0.0405 0.0443 0.0343 0.15 0.041 0.0498 

Na 3.5 --- 3.88 --- 7 3.82 ---

K 0.841 --- 0.894 --- 0.8 0.838 ---

SO4 --- --- --- --- 65 --- ---

Alkalinity (as HCO3) --- --- --- --- 55 --- ---

F --- 0.2 --- 0.22 0.6 --- 0.18 

Cl --- --- --- --- 0.5 --- ---

SiO2 --- --- --- --- --- --- ---

Al <0.0563 --- <0.0563 --- --- <0.0563 ---

Fe <0.0525 --- 0.0527 J --- --- 0.315 ---

Mn <0.0027 --- <0.0027 --- 0.8 <0.0027 ---

Cu 0.00973 J --- 0.00977 J --- --- 0.0197 J ---

Zn 0.0263 --- 0.0165 --- --- 0.0205 ---

Mo --- --- --- --- --- --- ---

Cd <0.0015 < 0.0001 <0.0015 < 0.0001 0.004 <0.0015 0.0002 

Ag <0.0021 --- <0.0021 --- < 0.001 <0.0021 ---

Cr <0.0032 0.0007 <0.0032 0.0007 [< 0.001] <0.0032 0.0022 

Co 0.00331 J --- <0.003 --- --- 0.0244 ---

Ni 0.0456 0.00313 <0.0036 0.00209 --- 0.00556 J 0.00244 

Pb <0.0029 --- <0.0029 --- < 0.001 <0.0029 ---

Hg <0.000104 < 0.0002 <0.000104 < 0.0002 < 0.001 <0.000104 < 0.0002 

Be <0.0013 < 0.0002 <0.0013 < 0.0002 --- <0.0013 < 0.0002 

V <0.0029 --- <0.0029 --- --- <0.0029 ---

Se <0.0069 < 0.001 <0.0069 < 0.001 < 0.01 <0.0069 < 0.001 

As <0.0076 < 0.0003 <0.0076 < 0.0003 0.04 <0.0076 0.0003 

Sum cations (meq/L) --- --- --- --- 1.58 --- ---

Sum anions (meq/L) --- --- --- --- 2.21 --- ---

Charge imbalance (percent) --- --- --- --- -33.7 --- ---

228
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Pioneer Creek Watershed Upstream of Red River 

Well ID well #4 well #4 well #4 well #4 well #5 

Sample Date 

Miscellaneous information 

5/12/99 

Red River Water 

System 

5/16/01 

Table PN-6; 

GW/A/1 

5/16/01 

Table PN-6; 

GW/C/1 

10/11/01 10/11/01 

Red River Water 

System 

Red River Water System 

"Code # 07129" Supply Wells

Comments 

Source ID (see table 2) 

"Code # 07129" 

Supply Wells 

PWS 

Dyke Tunnel 

Prospect 

[PN/DTP] 

USFS 

duplicate

USFS 

"Code # 07129" 

Supply Wells 

PWS 

between Bitter and Placer 

creeks 

PWS 

Lab ID (see table 2) --- Ecology & Ecology & --- ---

Environment Environment 

105106 17A 105107 01A Depth to Water (m) --- --- --- --- ---

Water Elevation (ft) --- --- --- --- ---

Field Temperature (

o

C) --- --- --- --- ---

pH, field, [lab] --- --- --- --- ---

Eh (V) --- --- --- --- ---

Spec Cond (PS/cm) field, [lab] --- --- --- --- ---

TDS (mg/L) --- --- --- --- ---

Constituent, dissolved (mg/L) 

Ca --- 52.2 50.5 --- ---

Mg --- 8.09 7.94 --- ---

Ba < 0.1 0.0425 0.0413 0.0457 0.0851 

Na --- 3.94 3.69 --- ---

K --- 0.885 0.789 J --- ---

SO4 --- --- --- --- ---

Alkalinity (as HCO3) --- --- --- --- ---

F 0.14 --- --- 0.15 0.07 

Cl --- --- --- --- ---

SiO2 --- --- --- --- ---

Al --- 0.0639 J <0.0563 --- ---

Fe --- 1.04 0.633 --- ---

Mn --- 0.0565 0.0536 --- ---

Cu --- 0.0163 J <0.0038 --- ---

Zn --- 0.0581 0.0460 --- ---

Mo --- --- --- --- ---

Cd < 0.001 <0.0015 <0.0015 < 0.0001 < 0.0001 

Ag --- <0.0021 <0.0021 --- ---

Cr 0.001 <0.0032 <0.0032 0.0007 0.0008 

Co --- 0.0256 0.0227 --- ---

Ni < 0.01 0.00974 J 0.00633 J 0.00219 0.00151 

Pb --- <0.0029 <0.0029 --- ---

Hg < 0.0002 <0.000104 <0.000104 < 0.0002 < 0.0002 

Be < 0.001 <0.0013 <0.0013 < 0.0002 < 0.0002 

V --- <0.0029 <0.0029 --- ---

Se < 0.005 <0.0069 <0.0069 < 0.001 < 0.001 

As < 0.001 <0.0076 <0.0076 < 0.0003 < 0.0003 

Sum cations (meq/L) --- --- --- --- ---

Sum anions (meq/L) --- --- --- --- ---

Charge imbalance (percent) --- --- --- --- ---

229
Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Bitter Creek Bitter Creek Bitter Creek Ranch 

Well ID Davis Well Harrison Well BC Ranch Well BC Ranch Well 

Sample Date 

Miscellaneous information 

8/24/93 

Unfiltered every value 

here is a TOTAL 

8/24/93 

Unfiltered 

6/17/00 

---

6/17/00 

duplicate 

Comments --- --- --- ---

Source ID (see table 2) Slifer 1996 Slifer 1996 RGC 8-12 Appendix A RGC 8-12 Appendix A 

Lab ID (see table 2) 

Depth to Water (m) 

Water Elevation (ft) 

Field Temperature (

o

C) 

pH, field, [lab] 

Eh (V) 

Spec Cond (PS/cm) field, [lab] 

TDS (mg/L) 

---

---

---

---

4.6 

195 

---

---

---

---

---

---

4.9 

420 

---

---

ACZ & Paragon 

Analytics 

[3.8] 

[680] 

490 

---

---

---

---

ACZ & Paragon 

Analytics 

[3.79] 

[671] 

---

---

---

---

---

Constituent, dissolved (mg/L) 

Ca --- --- 54 ---

Mg --- --- 31 ---

Ba --- --- 0.01 ---

Na --- --- 16 ---

K --- --- 3 ---

SO4 114 308 320 ---

Alkalinity (as HCO3) --- --- 5 ---

F --- --- 1.4 ---

Cl --- --- 1.7 ---

SiO2 --- --- --- ---

Al [2.9] [9.9] 3.3 ---

Fe [1.7] [1.6] 0.87 ---

Mn [0.8] [2.61] 2.5 ---

Cu [0.32] [0.79] 0.04 ---

Zn [0.22] [2] 0.81 ---

Mo [< 0.2] [< 0.1] 0.1 ---

Cd [0.003] [0.01] 0.0017 ---

Ag --- --- 0.002 ---

Cr --- --- 0.01 ---

Co [< 0.05] [0.06] 0.037 ---

Ni [< 0.1] [< 0.1] 0.062 ---

Pb [< 0.005] [< 0.005] 0.003 ---

Hg --- --- --- ---

Be --- --- 0.004 ---

V --- --- 0.01 ---

Se --- --- 0.005 ---

As --- --- 0.005 ---

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

---

---

5.6 

5.8 

---

---

Charge imbalance (percent) --- --- -2.4 ---

230
--- --- ---

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

Appendix 1. Complete historical ground-water quality database, Red River Valley, NM, 1982-2002 

Geographic Location Bitter Creek Watershed Red River Headwaters - Black Canyon Group Mine 

Well ID BC-1 BC-2 Black Canyon 1 Black Canyon 2 Black Canyon 3 

Sample Date 6/9/01 6/9/01 5/17/01 5/17/01 5/17/01 

Miscellaneous information Table BC-21; Table BC-21; Table RR-1; GW/A/1 Table RR-1; GW/A/2 Table RR-1; GW/A/3 

GW/A/1 GW/A/2 

Comments --- ---

Source ID (see table 2) USFS USFS 

Lab ID (see table 2) Ecology & 

Environment, Inc. 

Ecology & 

Environment 

USFS USFS USFS 

Ecology & Ecology & Ecology & 

Environment, Inc. Environment, Inc. Environment, Inc.

Constituent, dissolved (mg/L) 

Ca 54.8 85.3 15.3 44.5 48.3

Mg 30.7 41.4 6.93 12.2 9.21

Ba <0.006 <0.006 0.1 0.339 0.0602

Na 17.7 20.5 10.8 20.6 11.8

K 2.9 3.4 0.947 2.0 0.988

SO4 --- --- --- --- ---

Alkalinity (as HCO3) --- --- --- --- ---

F --- --- --- --- ---

Cl --- --- --- --- ---

SiO2 --- --- --- --- ---

Al 3.21 2.31 0.826 <0.0563

Fe 3.13 23.5 0.58 0.081.1 J

Mn 2.5 3.72 0.0105 0.0 0.0279

Cu 0.0475 0.0376 0.698 0.00667 J 0.0224

Zn 0.813 0.477 0.1230 0.0229 0.34

Mo --- --- --- --- ---

Cd 0.00183 J <0.0015 <0.0015 <0.0015

Ag <0.0021 <0.0021 <0.0021 <0.0021

Cr <0.0032 <0.0032 <0.0032 <0.0032

Co 0.0517 0.0638 <0.003 <0.003

Ni 0.0619 0.0712 <0.0036 <0.0036

Pb 0.00389 J <0.0029 0.0094 <0.0029

Hg 0.00011 J 0.000116 J <0.000104 <0.000104

Be <0.0013 0.00136 J <0.0013 <0.0013

V <0.0029 0.0082 J <0.0029 <0.0029

Se <0.0069 <0.0069 <0.0069 <0.0069

As <0.0076 <0.0076 <0.0076 <0.0076

Sum cations (meq/L) 

Sum anions (meq/L) 

---

---

--- --- --- ---

--- --- --- ---

<0.0563 

<0.0525 

<0.0015 

<0.0021 

<0.0032 

0.00364 J 

<0.0036 

<0.0029 

<0.000104 

<0.0013 

<0.0029 

<0.0069 

<0.0076 

Depth to Water (m)

Water Elevation (ft)

Field Temperature (

o

C)

pH, field, [lab]

Eh (V)

Spec Cond (PS/cm) field, [lab]

TDS (mg/L)

Charge imbalance (percent) --- --- --- --- ---

231