Showing posts with label Grand Canyon. Show all posts
Showing posts with label Grand Canyon. Show all posts

Tuesday, December 21, 2021

Saving The Colorado River - Are We Doing Too Little, Too Late? - 2021

 


In August 2015, The Wahweap Marina in Lake Powell was riding high in its bay - Click for larger image (https://jamesmcgillis.com)

Saving The Colorado River - Are We Doing Too Little, Too Late?

On Monday, May 24, 2021, I departed Monument Valley for Kanab, Utah, via Page, Arizona. The weather was clear, with only a light breeze. Page, Arizona owes its current existence to the nearby Glen Canyon Dam and its reservoir, inaptly named “Lake Powell”. Loved by power boaters but decried by environmentalists since its completion in the mid-1960s, both the dam and the “lake” are anachronistic constructs of 20th century groupthink. To justify its initial construction, dam advocates and the U.S. Bureau of Reclamation (USBR) had touted the proposed dam as a flood control mechanism.

Later, those running the dam’s As water levels continued to fall, by May 2021, Wahweap Marina stretched from bank to bank across its bay - Click for larger image (https://jamesmcgillis.com)electrical generators switched to promoting its ability to produce electricity from a supposedly renewable resource. Current lake levels would suggest otherwise. By 2023, the hydro-power intake structures will stand above the projected lake level. In other words, the dam will likely create no hydro-power at all.

As of 2021, drought and structural overdrawing of Colorado River water supplies have made a mockery of the Glen Canyon Dam and its rapidly shrinking reservoir. The Upper Colorado River Basin is in such extreme drought that the prospects of a catastrophic flood are near zero. As for the power boaters, most of their launch ramps now look like ski jumps, with a long drop-offs to the rocks below. The lake itself is so much smaller, snags, unseen sandbars and lack of beaches for camping make the boating experience more hazardous each year. Shorelines of quicksand and Looking as if they stepped out of an earlier century, two your girls run and play at Wahweap Overlook at Lake Powell, Arizona. Missing from the mesa in the background is the recently dismantled Navajo Generating Station - Click for larger image (https://jamesmcgillis.com)gravel bars not seen in over fifty years will consume the unwary. Lake Powell is fast approaching its all-time low water mark and is unlikely to rebound in the next decade or two.

In November 2019, the Navajo Generating Station (NGS) near Page, Arizona ceased operations. If anyone thought that Glen Canyon Dam and Lake Powell were cynical constructs of 20th century infrastructure, they should study the development and ultimate demise of the coal fired NGS. Owned by the Salt River Project, the largest public utility in the State of Arizona, the main purpose of NGS was to create electricity to pump Colorado River water over five mountain ranges to Phoenix and Tucson, Arizona.

The abandoned coal silos at Shonto, Arizona once stoked the Navajo Generating Station in Page, Arizona - Click for larger image (https://jamesmcgillis.com)To power the three huge furnaces at NGS, miners extracted and shipped coal from the Black Mesa Complex, near Kayenta, Arizona. Black Mesa lies above what used to be the largest aquifer in the Navajo Nation. Contemporaneous with the NGS, unscrupulous power brokers had tapped that aquifer to send a slurry of coal to a now defunct power plant at Laughlin, Nevada. Peabody Coal and its successor corporations operated the Black Mesa Mine on contract to the Navajo Nation. In exchange for some transitory jobs and revenue, the Navajo received a strip-mined mesa and the despoilment of their precious water resources. As a concession to the Navajo, the mine offered free coal for home heating each year. Since many Navajo households have no electricity, the foul and deadly coal was their only heat source during the winter. To add insult to injury, the Navajo had to line up with their personal pickup trucks and trailers to cart off the "free coal".

The old aquifer at Cow Springs, Arizona is now dry, which was a consequence of strip mining at nearby Black Mesa, Arizona - Click for larger image (https://jamesmcgillis.com)Although the mine and the NGS did provide some jobs for Navajo tribal members, the true legacy of the NGS was polluted groundwater and air throughout the Four Corners Region. For over forty years, visitors to the nearby Grand Canyon often looked down on a smokey pit, not the natural wonder they came to see. At one time, the NGS was the largest producer of airborne nitrogen oxide in the United States. Only far cheaper electricity provided by natural gas and renewable sources doomed the NGS.

When Arizona won a larger share of Colorado River water in federal lawsuits during the 1960s, the largest user of water in Southern Arizona was agriculture. Pima cotton got its name from Pima County, where Tucson now boasts a population of over one million residents. In the days when cotton was king, Phoenix, Arizona had a population of under 600,000. Today, Greater The now defunct Navajo Generating Station at Page, Arizona was once the largest single nitrogen oxide emitter in the continental U.S. - Click for larger image (https://jamesmcgillis.com)Phoenix has a population of 4.485 million. As agriculture subsided, the vast and thirsty megalopolis of Phoenix/Tucson grew in its place.

A little-known fact about the NGS was its thirst. During its 45-years of operation, it was the single largest consumer of water from Lake Powell. It also used over ten percent of its electrical power generation to transport coal via rail and to pump its cooling water from Lake Powell. Looking back, the NGS stole water from the Navajos and wasted that precious water to power itself and its electric trains. To complete the circle of complicity, Arizona built its current wealth on the false premise of abundant water, pumped from an unsustainable water supply. Like a science fiction monster, the NGS laid waste to water and land while using profligate amounts of energy to power itself. For 45-years, the NGS wasted water, power and environmental resources, all in the name of “progress”.

By 2021 and prior to the major delivery cutbacks to come, Arizona had banked about two years of water supply in shallow desert aquifers. Most of it is near The Navajo Generating Station on a cool day in October 2015, with all three furnaces emitting toxic gases and all six cooling towers wasting untold amounts of Colorado River water - Click for larger image (https://jamesmcgillis.com)the Palo Verde Nuclear Generating Station, west of Phoenix. With the water table so close to the surface, water samples there can register over 80-f degrees. To stave off potential water shortages, construction crews are installing pumps and delivery systems from those aquifers to north Phoenix. For as long as that water bank lasts, Phoenix can continue to pretend that it has an adequate supply of water. When it becomes obvious that supplies will tighten, expect land values in more recent suburbs, like Anthem Arizona to experience a major slump in housing prices. Water may soon become too expensive or scarce to supply all who want it.

When the reservoir downstream from Lake Powell, which is Lake Meade reaches its official drought emergency level in August 2021, Arizona and Nevada will take the deepest cuts in future water deliveries. With unending
A parched view of the Navajo Generating Station in August 2018, with all three furnaces still spewing pollution into the Four Corners Region - Click for larger image (http://jamesmcgillis.com)drought and decreased flows in both the Upper Colorado Basin (Lake Powell) and the Lower Colorado River Basin (Lake Mead), there is no guarantee of sufficient water in either or both basins to supply basic water needs to the 40 million people in the Southwest who depend on it. Although Arizona and Nevada will take the biggest initial cut in water deliveries, the entire region is likely to experience extreme shortages in the next decade.

The history of water politics in the West is one of over optimism and faulty projections. Instead of inaction and dithering as the West dries up and blows away, both the federal government and the states that make up the Colorado River Compact should take bold action.
Each year, Lake Powell losses up to fifteen percent of its volume to evaporation and percolation into its sandstone basin. The ongoing dismantling of the Navajo Generating Station in May 2021 - Click for larger image (htts://jamesmcgillis.com)The USBR should immediately decommission Lake Powell. They should then conduct a controlled release of water from Lake Powell into the Colorado River. When that still substantial volume of water reaches Lake Mead, it will then occupy a smaller geographical “footprint”. Unlike the substantial percolation at Lake Powell, Lake Mead’s granite lined basin will retain much more of its received water.

How would these bold moves affect the Colorado River and its water consumers? First, Page Arizona would decline in population, back to near its size before construction of the Glen Canyon Dam. Power boaters would have to travel to a more viable Lake Mead, farther downstream. As Lake Powell recedes, river runners could once again conduct rafting tours of the actual Glen Canyon. For the first time in over fifty years, hardy tourists could visit the most spectacular ecosystem ever destroyed by a desert reservoir. In time, Glen Canyon would recover, and the “Eden of the Rolling through Kanab, Utah, a scrapper hauls away remnants of the Navajo Generating Station - Click for larger image (https://jamesmcgillis.com)Desert” could well become a greater draw than the transitory “lake”. With luck and realistic planning, Phoenix, Las Vegas and even Los Angeles could survive, albeit on a much tighter water budget.

On the bright side, Page Arizona could become both a rafting and a mining center, quarrying desert sandstone for use in xeriscape throughout California, Arizona and Nevada. Personally, I would be happy to repopulate my Southern California front yard with succulents and cacti, interspersed among expanses of “Navajo Sandstone”. As I write this in August 2021, my plan sounds harsh. In 2022 and beyond, it may sound like “too little and too late”.


This concludes Part Three of a Five-Part Article. To read Part Four, click HERE. To return to Part One, click HERE

 


By James McGillis at 01:47 PM | Colorado River | Comments (1) | Link

Saturday, October 30, 2021

As Navajo Generating Station Spews Nitrous Oxide (Laughing Gas) into the Air, Downwind There isn't a Chuckle - 2013

 


The Elephant Feet - A pair of stone spires on U.S. Highway 160, south of Cow Springs, Arizona - Click for larger image (http://jamesmcgillis.com)

As Navajo Generating Station Spews Nitrous Oxide (Laughing Gas) into the Air, Downwind There isn't a Chuckle

The Navajo Generating Station (NGS), near Page, Arizona provides the electrical energy necessary to operate the Central Arizona Project (CAP). Thus, coal-fired power produced by NGS in the Upper Colorado River Basin enables Arizona’s CAP water delivery system to operate in the Lower Colorado River Basin.

As a byproduct of burning eight-million tons of Black Mesa coal each year, NGS currently sells about 500,000 tons of flyash to concrete block manufacturers. Land filled on site is an undocumented volume of scrubber byproducts, including bottom ash and gypsum. The remaining combustion gasses and solids enter into the atmosphere via three 775 ft. tall flue gas stacks.

At the Junction of U.S. 160 and Arizona 564 once stood the Peabody Coal Company's "Black Mesa Complex" informational signage - Click for larger image (http://jamesmcgillis.com)According to EPA spokesperson Rusty Harris-Bishop, the Navajo Generating Station is one of the largest sources of
nitrous oxide (N2O) emissions in the country. When processed for medical purposes, nitrous oxide becomes the benign sounding anesthetic, “laughing gas”. When drag racers inject N2O into internal combustion engines, it acts as an oxidant, offering additional power and speed.

After departing the flue gas stacks of coal-fired plants like NGS, no one knows the effects of 
N2O on lifeforms downwind. With an atmospheric lifespan of 120-years, the environmental effects of N2O may last longer than any human lifespan. One wag asked, "Are the clouds of laughing gas emanating from NGS part of a scheme designed to keep nearby Navajo and Hopi tribes pacified?"

If the Bashar Assad regime in Syria were to conduct widespread dispersal of nitrous oxide (
N2O) gas among the people of Syria, would the U.S. object, calling it a war crime? Such is currently the lot of anyone living in the air shed downwind of NGS or other coal-fired plants within the Four Corners country. If the nitrous oxide emissions dissipate quickly, over a wide area, war crime questions may remain moot. Only with chemical-gas testing on the reservation shall we understand the effects of long-term exposure to N2O and other emitted gasses. Unless changed, this complex set of environmental hazards will operate as usual. New cases of Black Lung Disease will surely continue among current and former Black Mesa miners.

Spokesmodel Carrie McCoy enjoys late sun at a hazy Grand Canyon in 2009 - Click for larger image (http://jamesmcgillis.com)Earlier studies found that NGS alone caused between two and seven percent of airborne winter haze downwind at the Grand Canyon. Not only does NGS siphon vast amounts of water from Lake Powell, its heat-island effect increases evaporation of the remaining lake water. Heat and greenhouse gasses emitted from the NGS stacks drive cool air and moisture away from the area. As part of an environmental death spiral, NGS directly robs CAP of what it needs most, which is an adequate water supply downstream.

Hydrologists, utilities spokespeople and federal regulators offer only lip service regarding interdependence between the Upper and Lower Colorado River Basins. Collectively, they have yet to admit that diminished input and too many outputs may soon drain the greater Colorado River watershed. Only when officials admit that there is a collective shortage shall they find better uses for our resources, including earth, water and fire.

In 1965, prior to the building of Navajo Generating Station, the author Jim McGillis stands on a promontory above the Grand Canyon and Colorado River - Click for larger image (http://jamesmcgillis.com)In 2009, I drove past the Peabody Coal Company Access Road on U.S. Highway 160. There, a backlit sign featured the words, “Peabody Western Coal Company” and “Black Mesa Complex”. In recent years, plant owners at nearby Navajo Generation Station (NGS) and the Navajo Nation gave Peabody Energy a twenty-five year lease extension. That agreement yoked the Navajo and Hopi Nations to an environmentally destructive course. When some Navajo and Hopi threatened to shut down the Black Mesa Complex, Peabody Energy "doubled down", raising their annual royalty fee for Black Mesa coal from $34.4 Million to $42 million. Over Hopi Nation objections, the twenty-two percent increase in royalties was enough to secure Navajo Nation agreement.

No one knows how much profit Peabody Energy will reap from their continued strip mining of Black Mesa, but it will be orders of magnitude larger than any royalty fees paid. Succumbing to what some call a meager financial incentive, the Navajo Nation traded the health of its people for the benefits of Old Energy. In their marketing campaign, Peabody and the Navajo Nation raised the prospect of continued employment for the Navajo and Hopi workers. Skeptics say that strip-mine-jobs cause more health and environmental harm than any economic benefit that they may provide.

As the saying goes, “Those who ignore history are destined to repeat it”. In post-1984 America, companies that hide their history shall gain little benefit from their deceit. Since 2009, Peabody Energy has removed all references to “Peabody Western Coal Company” and “Black Mesa Complex” from their corporate communications. In line with their expunging of the historical record, Peabody Energy also removed all “Black Mesa Complex” informational signage from U.S. Highway 160. Under their current marketing scheme, Peabody Energy applies the innocuous moniker, “Kayenta Mine” to the largest strip mine in the West.

Peabody Western Coal Company signage, which formerly stood at the intersection of US-160 and Navajo Route 41, which is the Peabody Coal Black Mesa access road - Click for larger image (http://jamesmcgillis.com)Out of sight and out of mind is where Peabody Energy wants their dirty little secret to lie. Luckily, for the company, destruction caused by their operation lies unseen behind the ridge of Black Mesa. Only with satellite photography can we see the extent environmental destruction occurring at Black Mesa. Despite Peabody Energy’s efforts to hide their mining operations, gray trails of effluvium lead down the canyons from the area. At the lower end of newly deepened gulches, that “gray matter” turns and runs north toward Kayenta. Even if the mines were to close today, the deep scars on Black Mesa would take several geological epochs to heal.

In a community minded effort, NGS and its owner, the Navajo Tribal Utility Authority (NTUA) are now extending electrical power to sixty-two homes in the area surrounding LeChee, Arizona. According to the U.S. Census Bureau, the population at LeChee is ninety-eight percent Native American. Located less than two miles from NGS, many of LeChee's residents work either at the plant or as service workers in nearby Page, Arizona. With a 2010 population of 1,443, LeChee had lost 163 residents over the previous decade. How many of them departed because of chronic respiratory diseases, no one knows. Prior to electrification, how many of the LeChee homes burned coal for heat?

This is Chapter 3 of a four-part series regarding coal and water in the Southwest. To read Chapter 4, please click HERE.


By James McGillis at 01:26 PM | Environment | Comments (0) | Link

Thursday, October 28, 2021

Does the Passport Potash, Inc. Holbrook Basin Project Hold Water? - 2013

 


Is there sufficient water in the C-Aquifer of the Holbrook Basin to serve the needs of both a potash mine and the ecology of the Little Colorado River watershed? - Click for larger image (http://jamesmcgillis.com)

Does the Passport Potash, Inc. Holbrook Basin Project Hold Water?

In 2009, I first visited the Cane Creek Facility, operated by Intrepid Potash – Moab, LLC. The main features of the “facility” include a hydraulic (in-situ) mining operation, large settling ponds, plus a processing building and a loading facility for the finished product. While driving along the public road known as the Shafer Trail, I observed the almost total destruction of the natural environment within the confines of the facility. Contemporary large-scale farming requires potash as a fertilizer. Still, I wondered, when is the environmental cost too high for any particular mine to be developed?

A dust storm approaches the Snowflake, Arizona home of environmentalist Kathy Hemenway in 2010 - Click for larger image (http://jamesmcgillis.com)In 2010, environmentalist Kathy Hemenway contacted me regarding my research into potash production near Moab. A consortium of mining companies, she told me, was preparing to mine potash from beneath the Holbrook Basin, near her home in Snowflake, Arizona. Over the next three years, Passport Potash, Inc. became the lead company in the effort to mine potash salts in the Holbrook Basin. After making agreements with various ranchers, other mining interests and the Hopi Tribe, Passport Potash commissioned the German consulting company ERCOSPLAN to create a Preliminary Economic Assessment, or “PEA”. In March 2013, Passport Potash, Inc. published the ERCOSPLAN PEA on their website. (Author's note: By 2015, the 
ERCOSPLAN PEA was available only as a PDF file)

During 2011, I had researched and written a series of four articles on the Holbrook Basin and the Little Colorado River Basin within which it resides. With over-stressed aquifers and a drying environment, the introduction of a Moab-style, in-situ (solution) mine in the Holbrook Basin would reflect an obvious overuse
of a diminishing resource. Initially, when I read the 2013 Passport Potash PEA, I was buoyed by the consultants’ recommendation that Passport Potash conduct conventional, “room and pillar” mining at Holbrook.
Widespread environmental damage created by in-situ potash mining near Moab, Utah - Click for larger image (http://jamesmcgillis.com)
When I looked deeper into the report, I discovered potential problems with the Passport Potash conventional mining plan. As they say, “the devil is in the details”. The devil, in this case, is the potential overuse of surface water and groundwater in the Holbrook Basin. Although Passport would build conventional shafts and galleries for their mining operations, large amounts of water would be necessary for ore processing and other uses adjacent to the mine. While much of the Passport Potash PEA looked feasible to me, the lack of a comprehensive hydro-ecological survey raised an immediate red flag.

In Moab, Intrepid Potash needs only to drop a siphon into the adjacent Colorado River to suck up the incredible amounts of water required to flush potash salts from deep underground. To my knowledge, there is no public disclosure of the amounts of water required for the “Big Flush” at Moab. With
relatively high purity of desired potash compounds, Intrepid Potash uses sunlight to dry their produced brine. After minimal processing, Intrepid Potash is able to ship its final product by rail or truck.
Extensive brine holding ponds at Potash, Utah dominate the environment - Click for larger image (http://jamesmcgillis.com)
In the Holbrook Basin, however, there is a “high amount of Carnallite (approx. 8%) and the relatively high amount of insoluble material (nearly 5%) in the mineralized material”. Further, the consultants say, “the reliable processing route to obtain a MOP product (commercial potash) will be a variation of the hot leaching/crystallization route”. Since hot leaching is a water and steam-intensive process, “the total water demand for processing, including process water and make-up water for cooling cycles, is approximately 550 m³/h”. That translates to 145,295 gallons or 2.24 acre-feet per hour.

Put into context, one acre-foot of water will sustain a single U.S. suburban household, or up to four “water wise” households for one year. With a full
running time of 6600 hours per year, and water usage of 2.24 acre-feet per El Rio Puerco (the Puerco River) runs like a brackish ditch through Petrified Forest National Park near Holbrook, Arizona - Click for larger image (http://jamesmcgillis.com)hour, the annual water usage at the Holbrook Basin Project would be 15,840 acre-feet. In context, that amount of water could support between 15,000 and 60,000 households. Flagstaff, which is the largest city in Northern Arizona, has a population of just over 65,000. With a population of about 5,000, Holbrook is the largest city in the Holbrook Basin. When operational, the Holbrook Basin Project would dwarf the water usage of Holbrook and approach the water needs of Flagstaff. Instantly, the Holbrook Basin Project would become the largest single water user in all of Northern Arizona.

According to the PEA, “A regional aquifer is located within the Coconino Sandstone and locally within the uppermost Supai Formation, which is called the C-aquifer. Furthermore, the Moenkopi and Chinle Formations might (italics mine) contain undefined/unreported aquifers. South of the Project Area, there are extensive areas of sinkholes reaching the land surface, which suggests major salt dissolution that likely contributes to the salinity of the water in the Coconino Sandstone (COX, 1965, /6/)”. The above statement ignores the fact that new sinkholes have developed in the area within the past twenty years. Earth scientists know that as the local water table subsides, sinkholes are often the result.

Quicksand dominates the watercourse of the Little Colorado River at Homolovi State Park, near Winslow, Arizona - Click for larger image (http://jamesmcgillis.com)The Little Colorado (River), a permanent stream (italics mine), and the Puerco River, an intermittent stream, run through the area (COX, 1965,/6/). These streams merge about three miles east of Holbrook and tend to generally produce fresh water, which is reported to be brackish to saline in the surrounding areas”. The only hydrological study cited in the PEA dates to 1965. Perhaps the Little Colorado was a “permanent stream” in the 1960’s, but it is far from that today. In the current century, that river runs hard and fast for only a brief time each spring. At that time, snowmelt from the Mogollon Plateau runs off toward the Colorado River. Summer thunderstorms may produce brief river flow, as well. Otherwise, most of the flow cited in the PEA is running beneath the surface, if at all.

The Wigwam Motel in Holbrook, Arizona was the inspiration for the Cozy Cone Motel in the Disney Pixar movie, "Cars" - Click for larger image (htp://jamesmcgillis.com)“The availability of water has been investigated in a preliminary hydrogeological study (MONTGOMERY & ASSOCIATES, 2013, /27/), but further in-depth studies are required. According to the MONTGOMERY & ASSOCIATES study, the required amount of water could be supplied (italics mine) by the Coconino Sandstone aquifer”. The cited study, by MONTGOMERY & ASSOCIATES is not currently available on the internet, so its conclusions are speculative, at best. Without drilling, logging and publication of numerous test-well flow-rates, Passport Potash, Inc. should not base their development decisions on such speculative information.

“Water demand will be met by wells drilled in the vicinity of the preliminary plant site. A pipeline system will be installed to pump the water to the plant site, where it will be stored in several large water storage tanks for use in processing, general usage in the mine, fire suppression and potable water supply”. With a planned twenty-six year production cycle at the Holbrook The "Gas Mart" hearkens back to the day when old Route 66 was the lifeblood of commerce in Holbrook, Arizona - Click for larger image (http://jamesmcgillis.com)Basin Project, we may now extrapolate how much “mystery water” the Coconino Sandstone aquifer must contain in order to provide an adequate supply for the life of the project. My quick calculations indicate that during its lifetime, the Holbrook Basin Project would require water resources equal to almost twice the carrying capacity of Bartlett Lake, near Phoenix, Arizona. Bartlett Lake is twelve miles long, with a surface area of over two thousand acres and an average depth of one hundred feet. Until I see a professional hydrological study of the Coconino Sandstone aquifer, I would not trust mere reference to an unpublished study commissioned by Passport Potash, Inc.

“A sewer system will be constructed on-site to treat the waste-water from the sanitary facilities at the plant. Afterwards, it will be used as process water”. Before it becomes a saturated brine solution, the processing facility would reuse and recycle water several times during various phases of mineral
An eroded sandstone landform in Petrified Forest National Park near Holbrook, Arizona testifies the the aridity of the Holbrook Basin - Click for larger image (http://jamesmcgillis.com)production. Although this recycling effort is admirable, “about 15.4 MTPA (millions of tons per annum) of wet solids and 997,000 m³ (808 acre-feet) of brine per year remain as processing residues, which have to be disposed of”.

The PEA states, “The disposal brine remaining from the production process can be disposed of by deep well injection”. To me, that is a glib statement. Over the life of the project, injecting over 21,000 acre-feet of saturated brine into deep wells could result in unintended consequences. To see what might happen, look no further than the States of Arkansas, Oklahoma and Kansas, where deep rock fracturing (fracking) and process water disposal in deep wells may have caused earthquakes of unprecedented size and scale. The only way to study deep well injection at a particular site is to do it. Could large-scale process-brine injection compromise the rock barrier that separates the injection sites from the Coconino Sandstone aquifer above?

A large thunderstorm over Snowflake, Arizona is typical of the summer Monsoon in Northern Arizona - Click for larger image (http://jamesmcgillis.com)Production Waste Disposal – “The processing of the potential potash ore described in Section 16.2 produces about 400 million metric tons of wet solid tailings and about 25 million m³ MgCl2-rich waste brine over the whole project lifetime. The tailings will be stockpiled on the surface and will remain after the mining operation. Potential emissions from the tailings pile are either salty water (brine), which will be collected and handled like the waste brine, or dust transported by wind”.

“Furthermore, a 1.5 m high dyke should surround the tailings pond and will collect water run-off. The collected water will be pumped into the brine ponds and disposed by deep well injection”. In the summer months, the regional Monsoon can bring heavy downpours to the Holbrook Basin. If a major thunderstorm were to unload its water supply directly on the Holbrook Basin Project, would a five-foot tall berm of earth be sufficient to contain the mountainous, salt-saturated tailings pile? If such a disaster were to occur,
A bulk rail car loading facility under construction near St. Johns, Arizona is similar to a facility planned for the Holbrook Basin Potash Project - Click for larger image (http://jamesmcgillis.com)the resulting flood of brine could enter the Little Colorado River and from there, flow unimpeded toward the Colorado River and the Grand Canyon.

“In total, about 400 million metric tons of wet solid tailings will accumulate during the operation. The wet salt from the plant has to be stockpiled permanently on the surface. Taking into consideration a height of 40 m and a material density of 1.7 t/m³, an area of about 6 km² is necessary to handle the solid disposal from the process”. Converted to U.S. standards, 6 km² is equal to 3.7 square miles of unprotected tailings, standing over one hundred thirty feet high.

Although the PEA passes off “dust transported by wind” in a single sentence, wind borne dust is already a major modifier of weather and stream flow throughout the Colorado Plateau. In recent years, spring dust storms have drastically altered the environment in the Colorado Rocky Mountains and
Tons of dirt and dust spontaneously go air-borne during a wind event in the Holbrook Basin, Arizona - Click for larger image (http://jamesmcgillis.com)other high altitude snow banks throughout the region. As wind borne dust lands on the snow pack, it changes the albedo (light reflectance) of the snow, darkening it and causing early snow melt. Rather than allowing slow release of melt water into the environment, rapid melting of dirty snow creates floods along both the Little Colorado River and throughout the Upper Colorado River Basin.

The Holbrook Basin Project, Phase 1 – “Studies to confirm and verify the assumptions made for the PEA. These studies include detailed hydrogeological investigations to determine the quantity and quality of groundwater available for the project. An initial water study indicates the general suitability of the
Coconino Sandstone aquifer as a water source, but no specific investigations have been conducted. Recommendations: Detailed hydrogeological investigations to determine the quantity and quality of groundwater available for the project”.

Two Navajo mothers watch as their children play in a Little Colorado River swimming hole beneath a railroad bridge near Winslow, Arizona - Click for larger image (http://jamesmcgillis.com)If the legacy of the Holbrook Basin Project shall be a dried-up or brine-compromised Coconino Sandstone aquifer and a mountainous pile of salt tailings blowing in the wind, Passport Potash, Inc. should abandon the project now. Before the company moves forward with the project, it should publicly address the following issues:
      • Are there sufficient water reserves available to support both the mining operation and the Holbrook Basin at large?
      • What are the potential environmental effects of injecting brine into deep wells, beneath the Coconino Sandstone aquifer?
      • Will the company provide adequate protective covering and drainage for the tailings pile, both during and after the project life-cycle?

Until these basic questions are answered, I remain unconvinced that the ERCOSPLAN/Passport Potash, Inc. Preliminary Economic Assessment (PEA) holds any more water than does the Little Colorado River during its dry season.


By James McGillis at 03:14 PM | Environment | Comments (0) | Link

Sunday, October 3, 2021

The Best View of Moab? Take Potash Road to Canyonlands, on the Shafer Trail - 2009

 


The settling ponds at Potash, Utah - Click for larger image (http://jamesmcgillis.com)

The Best View of Moab? Take Potash Road to Canyonlands, on the Shafer Trail

 
Where the pavement ends in Potash, Utah, so too does the Potash Road (Utah Route 279). There, a gravel and dirt road continues up and around the potash settling ponds. Beginning at that point, a hodgepodge of county, federal and social names prevail along various segments of the road. The two most popular names associated with the upper reaches of that track are, “South Fork Road” and the “Shafer Trail”. Before proposing our candidate for the official road name, we shall describe both its dangers and its beauty.
Hoodoos along the lower Shafer Trail, Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
Starting at the Intrepid Potash, LLC settling ponds in Shafer Basin, the road takes a meandering course, up-slope past hoodoos, towers and buttes. As we drove the track, it roughly paralleled the flow of the Colorado River. As we climbed, the river descended until there was a 2000-foot difference in elevation between the river and our location atop the sandstone canyon rim. Along this section, are the best views of the Colorado River Gorge.
Desert pothole, along the Shafer Trail, Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
Prior to reaching the high point above the gorge, we came upon a large, shallow pothole. Dependent for their existence on rainfall and local runoff, wet and dry potholes dot the Canyonlands landscape. After a summer shower, they shine like so many silver coins in the sunlight. Each pool of retained water has its own unique life-cycle. Some support ancient aquatic life forms, while others are drinking water sources for wild horses or other mammals. In any given pool, a wide variety of insects and other organisms might sustain themselves through their entire life-cycle. Although our selected pothole was within yards of the main track, no wheel marks had disturbed or desecrated its pristine beauty.
The Other visits the desert pothole near Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
Near the highest point along the Colorado River Gorge, Thelma & Louise met their fate in the 1991 movie by the same name. For us, a close approach to the unmarked and unguarded canyon rim made our heart skip a beat.
 
Having previously stood at the South Rim of the Grand Canyon, we knew its depth to be about one mile. There, the scene is one of grandeur. Although at least fifty-three individuals fell to their death there over the past eighty years, most landed on various ledges, not more than five hundred feet below their point of departure. Although the Colorado Gorge is only two-fifths as deep, there are no intermediate ledges or outcroppings to break one’s fall. Unless it has wings, whatever goes over the edge here will not stop until it strikes the surface of the Colorado River. As we stood close to the rim here, our predominant feeling was one of queasiness.
The launching point for Thelma & Louise, in the 1991 movie of the same name - Click for larger image (http://jamesmcgillis.com) 
Mistaking our truck’s accelerator for the brake pedal at his spot would set in motion a slow motion disaster. After going over the edge, brakes and steering would no longer matter. The mass of our body and the pickup truck surrounding it would feel weightless for the ten seconds it took to reach the bottom. There, the freefall would end abruptly at the surface of the Colorado River. Since water is quite unyielding when impacted at high speeds, it might as well be solid concrete. Knowing that such was the fate of characters Thelma & Louise, we stepped carefully back from our closest vantage point, about eight feet from the brink. After a deep breath or two, we were ready to go back to the truck and motor slowly up the trail.
 
To our way of thinking, the best natural light in the desert appears near sunup or sundown. Having taken our time along the way, we took our final look back towards the river at almost 7:00 PM. Looking forward and upward, we noted a small wooden sign, which marked our entrance into Canyonlands National Park.
 

 

Watch the Video, "Mudflaps & Helicopters"

 

Forward - Seeking the best view of Moab, Thelma & Louise take flight at the Colorado River Gorge, Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
 
Moab Utah - Best View
Shifting our Nissan Titan V-8 into four-wheel drive, we traveled up a long, otherwise undisturbed valley. Where that valley abruptly ended, the road began an equally long upward traverse of a talus slope. After that climb, we looked up at what seemed to be a sheer cliff. Hidden from our view in the fading light, was a famous set of switchbacks. Ascending the trail slowly was the prudent thing to do. Just beyond the top of the switchbacks is a mesa top, still within Canyonlands National Park.
The Colorado River Gorge near Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
During various excursions in Canyonlands, we had experienced a phenomenon that is alien to urban drivers. Often, we had perceived that a particular road would next turn in one direction, only to find it turn the other way. While climbing this set of switchbacks, we often could not determine if the road went on at all. In the failing light of dusk, the steep canyon wall hid all the switchbacks above and below us. As we continued our ascent, we wonder if the spirit of the Ancients might be riding along with us, having a good laugh about the optical illusions of the trail.
 
After viewing unique pillars of stone and other rock tableau, we crested the Mesa top, and then paused to look back from whence we came. Many miles to the east, the alpenglow crept up the sides of the La Sal Mountains. Day turned to night in the canyon below. Near our junction with State Route 313, we stopped at the Canyonlands self-pay box and did our part to support maintenance and upkeep of this unique road.
A look back down the Shafer Trail, near Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
The stretch of road we just described starts as Potash, by the Colorado River and ends on the mesa top in Canyonlands. On many maps, including our 2005 Edition of the Delorme Utah Atlas & Gazetteer it appears as “South Fork Road”. Recently, Google Maps began showing both "South Fork Road" and the more common, "Shafer Trail" along this section of road. According to our research, “South Fork Road” is a social-road name, not used by any official agency in the area. When we questioned several Moab local residents, each said that the road has always been the “Shafer Trail”. On most locally produced maps, there is no other name associated with the road,  the road.
Switchbacks on the Shafer Trail, Moab, Utah - Click for larger image (http://jamesmcgillis.com) 
The track has its origin in Shafer Basin, adjacent to the potash settling ponds. Just below its mesa-top crest, stands Shafer Campground. Before extensive grading allowed its use as a haul-road for uranium ore in the late 1940s, a local rancher named Shafer used the trail each year to herd cattle from what we now call Shafer Basin to the mesa top and back again. In the interest of public safety and standardization among mapmakers, the road from the Cane Creek Potash Plant, up to Canyonlands National Park, should bear the name of its originators, and his brother Frank Shafer. Since the track is as much a trail as it is a road, henceforth its name should be, “The Shafer Trail”.
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