Grass Hopper Rd Progress Report - PG&E, Pacific Gas and ...
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Groundwater Remediation Program Hinkley, California Brook Canyon Rd Salinas Rd Trindall Rd Mountain General Rd Mountain General Rd Holstead Rd Grass Hopper Rd Sonoma St Coon Canyon Rd Burnt Tree Rd Fossil Bed Rd Burnt Tree Rd Hinkley Lockhart Rd - Santa Fe Ave Alcudia Rd Locust Rd Flower Rd Valley Wells Rd Hope St Community Bl Frontier Rd Riverview Rd La Mour Rd Old Hinkley Rd Yellowstone Rd Manacor Rd Palma Rd Pera Rd Santa Fe Ave Flower Rd Dixie Rd Dixie Rd Summerset Rd Hinkley Rd Hinkley Rd Hinkley Rd Highway 58 Highway 58 Barstow-Bakerf Lockhart Fault Hinkley Rd Zone Reactiv ea In-situ Ar Centr South Centr e al Zone e Reactiv ea In-situ Ar e c Sour ea Ar al Reinjection eatment Unit r T w Desert Vie Dairy Land Progress Report We are committed to doing what is right in Hinkley Pacifc Gas and Electric Company (PG&E) is committed to sharing timely and accurate information about our groundwater remediation and community programs in Hinkley. This is the nineteenth in a series of regular Progress Reports. September 2014 Serra Rd Acacia St Carson Rd Granada Rd Frontier Rd Fairvie y Rd Highcrest Rd Aquarius Rd vd Acacia St Thompson Rd Alcudia Rd on Rd Santa Fe Ave Hinkley Rd Lockhart Fault Hinkley Rd Community Bl vd Ranch Agricultural Unit Agricultural Units Under Development 2014-2015 Agricultural Unit Upgrade 2014-2015 Agricultural Unit Agricultural Unit Agricultural Unit Agricultural Unit Fresh Water Injection Continued Progress on Cleanup as Agricultural Treatment Expands set Rd Summer w Rd w Rd Mount Mount ain Vie ain Vie First of four new agricultural treatment units in place. Serra Rd Pueblo Rd Petra Rd Blanca Rd Recent Water Board approvals paved the way for new agricultural treatment areas to further our success in treatment of the chromium plume. A 60-acre parcel, located south of the Desert View Dairy called the Ranch Agricultural Treatment Unit (ATU), is one of four new agricultural treatment areas planned over the next year. In the coming months, work will begin to upgrade areas just north of the new Ranch ATU. While early next year, new treatment areas are planned to be constructed on two plots north of Community Boulevard between Fairview and Summerset Roads. Agricultural treatment is a key component of PG&E’s ground- water remediation program in Hinkley. Groundwater with low-levels of chromium 6 is applied directly to the soil where crops are planted using drip irrigation. Soil conditions surrounding the crop roots convert chromium 6 into chromium 3, an abundant mineral in natural soils. Once converted, the chromium 3 leaves the groundwater and becomes part of the surrounding soil. As part of hydraulic containment efforts, more than 4 billion gallons of chromium-affected groundwater have been extracted for benefcial use in agricultural operations and for in-situ treatment through June 2014. Groundwater extraction for agricultural operations has removed more than 2,100 pounds of chromium from the upper aquifer to date. The natural processes that PG&E treatment technologies support also promote the removal of other nuisance constituents, such Workers assemble the new Ranch ATU pivot which will as nitrates, from area groundwater. While treating the chromium be more than 760 feet long and equipped with water conserving “drag and drip” technology. 6 plume, our efforts have also removed more than 100 tons of nitrates from Hinkley groundwater. New agricultural areas are shown along with existing treatment areas already in use. Treatment at the Source Area is Improved and Expanded Working with the Water Board, PG&E developed plans to improve and expand in- situ treatment. This summer, PG&E mobilized contractors and began construction work. Residents may have noticed drill rigs and crews installing new wells in the Source Area, south of Community Boulevard, and in the South Central Area, north of Community Boulevard near Summerset Road. PG&E is using in-situ treatment to achieve cleanup in areas of the plume that have the highest levels of chromium 6. The in-situ process starts by injecting a food grade material (such as grain alcohol) into affected groundwater to stimulate the growth of naturally occurring bacteria within the soil. The growth cycle of the bacteria creates conditions that convert chromium 6 to chromium 3, a naturally occurring substance. In-situ treatment has reduced chromium concentrations across 124 acres of the plume core from over 1,000 parts per billion (ppb) to less than 10 ppb in many areas. Crews install a new well in the in-situ treatment area. PG&E Works With Residents to Sunset Water Programs PG&E understands and takes seriously the concerns of local residents. Prior to California establishing a drinking water standard specifcally for chromium 6, PG&E offered several interim programs to eligible Hinkley residents to address their concerns regarding levels of chromium 6 in their domestic well water. These programs included state-of-the-art water treatment systems, bottled water and property purchase at property owners’ request. PG&E continued to offer these programs as the State worked to fnalize a drinking water standard for chromium 6. On July 1, 2014 the State of California established a drinking water standard for chromium 6 of 10 parts per billion (ppb). PG&E monitors the levels of chromium in over 400 local domestic wells in the Hinkley valley. Levels of chromium 6 in domestic wells in use by Hinkley residents and sampled by PG&E are well below 10 ppb. In light of all domestic wells meeting the standard, PG&E is working with Hinkley residents to discontinue these interim programs by October 31. If you have questions about these programs, please contact us at (760) 253-7896. For More Information If you would like more information, please contact us by phone at (760) 253-7896, by email at hinkleyinfo@pge.com or visit our Hinkley Community Resource Offce located at 22999 Community Boulevard. Please note our new hours: We are open Monday through Thursday from 9 a.m. to 4 p.m. or by appointment. The offce is closed on Fridays. Printed on 100% recycled paper
Transcript of Grass Hopper Rd Progress Report - PG&E, Pacific Gas and ...
Groundwater Remediation ProgramHinkley, California
Brook C
anyon Rd
Salinas Rd
Trindall Rd
Mountain General Rd
Mountain General RdHolstead Rd
Grass Hopper Rd
Sonoma St
Coon Canyon Rd
Burnt Tree Rd
Fossil Bed Rd
Fossil Bed Rd
Fossil Bed Rd
Fossil Bed Rd
Burnt Tree Rd
Hinkley Lockhart Rd - Santa Fe Ave
Alcudia Rd
Locust Rd
Flower R
d
Valley Wells R
d
Hope St
Community Bl
Frontier Rd
Riverview Rd
La Mour Rd
Shaves A
Old Hinkley Rd
Iron Mountain Rd
Yellowstone R
d
Manacor Rd
Palma Rd
Pera Rd
Santa Fe Ave
Flower R
d
Dixie R
dD
ixie Rd
Jasper Rd
Cedar R
d
Birch R
d
Lenwood R
d
Summ
erset Rd
Hinkley R
dH
inkley Rd
Hinkley R
dH
inkley Rd
Hinkley R
d
Orchard R
d
Orchard Rd
Green Desert Rd
Sweeten Rd
Santa Fe AveHighway 58Highway 58 Barstow-Bakerfield Hwy Blue Star Memorial Hwy CalfCanyon Hwy
Lockhart Fault
Hinkley R
d
Lenwood Rd
Lenwood R
d
National T
rails
Hwy
W
Main St
Zone Reactivea In-situ ArCentr
South Centr
e
al
Zone e Reactiv
ea In-situ Are cSour
ea Aral Reinjection
eatment UnitrT
w Desert VieDairy Land
Progress Report We are committed to doing what is right in Hinkley
Pacific Gas and Electric Company (PG&E) is committed to sharing timely and accurate information about our groundwater remediation and community programs in Hinkley. This is the nineteenth in a series of regular Progress Reports. September 2014
Serra Rd
Ac acia St
Car son Rd
Gr anada Rd
F r ontier Rd
Fairvie
y Rd
Highcr es t Rd
Aquarius Rd
vd
Ac acia St
Thompson Rd
Al cudia Rd
on Rd
Santa Fe Ave
Hinkl e y R
d Lockhart Fault
Hinkl e y R
d
Community Bl vd
Ranch Agricultural Unit
Agricultural Units Under Development 2014-2015
Agricultural Unit Upgrade 2014-2015
Agricultural Unit
Agricultural Unit
Agricultural Unit
Agricultural Unit
Fresh Water Injection
Continued Progress on Cleanup as Agricultural Treatment Expands
set Rd
Summ
er
w R
dw
Rd
Mount
Mount
ain Vieain Vie
First of four new agricultural treatment units in place.
Serra Rd
Pueblo R
d
Petra R
d
Blanca R
d
Recent Water Board approvals paved the way for new agricultural treatment areas to further our success in treatment of the chromium plume. A 60-acre parcel, located south of the Desert View Dairy called the Ranch Agricultural Treatment Unit (ATU), is one of four new agricultural treatment areas planned over the next year. In the coming months, work will begin to upgrade areas just north of the new Ranch ATU. While early next year, new treatment areas are planned to be constructed on two plots north of Community Boulevard between Fairview and Summerset Roads.
Agricultural treatment is a key component of PG&E’s ground-water remediation program in Hinkley. Groundwater with low-levels of chromium 6 is applied directly to the soil where crops are planted using drip irrigation. Soil conditions surrounding the crop roots convert chromium 6 into chromium 3, an abundant mineral in natural soils. Once converted, the chromium 3 leaves the groundwater and becomes part of the surrounding soil.
As part of hydraulic containment efforts, more than 4 billion gallons of chromium-affected groundwater have been extracted for beneficial use in agricultural operations and for in-situ treatment through June 2014. Groundwater extraction for agricultural operations has removed more than 2,100 pounds of chromium from the upper aquifer to date.
The natural processes that PG&E treatment technologies support also promote the removal of other nuisance constituents, such
Workers assemble the new Ranch ATU pivot which will as nitrates, from area groundwater. While treating the chromium be more than 760 feet long and equipped with water conserving “drag and drip” technology.
6 plume, our efforts have also removed more than 100 tons of nitrates from Hinkley groundwater.
New agricultural areas are shown along with existing treatment areas already in use.
Treatment at the Source Area is Improved and Expanded Working with the Water Board, PG&E developed plans to improve and expand in-situ treatment. This summer, PG&E mobilized contractors and began construction work. Residents may have noticed drill rigs and crews installing new wells in the Source Area, south of Community Boulevard, and in the South Central Area, north of Community Boulevard near Summerset Road.
PG&E is using in-situ treatment to achieve cleanup in areas of the plume that have the highest levels of chromium 6. The in-situ process starts by injecting a food grade material (such as grain alcohol) into affected groundwater to stimulate the growth of naturally occurring bacteria within the soil. The growth cycle of the bacteria creates conditions that convert chromium 6 to chromium 3, a naturally occurring substance.
In-situ treatment has reduced chromium concentrations across 124 acres of the plume core from over 1,000 parts per billion (ppb) to less than 10 ppb in many areas. Crews install a new well in the in-situ treatment area.
PG&E Works With Residents to Sunset Water Programs PG&E understands and takes seriously the concerns of local residents. Prior to California establishing a drinking water standard specifically for chromium 6, PG&E offered several interim programs to eligible Hinkley residents to address their concerns regarding levels of chromium 6 in their domestic well water. These programs included state-of-the-art water treatment systems, bottled water and property purchase at property owners’ request. PG&E continued to offer these programs as the State worked to finalize a drinking water standard for chromium 6.
On July 1, 2014 the State of California established a drinking water standard for chromium 6 of 10 parts per billion (ppb). PG&E monitors the levels of chromium in over 400 local domestic wells in the Hinkley valley. Levels of chromium 6 in domestic wells in use by Hinkley residents and sampled by PG&E are well below 10 ppb. In light of all domestic wells meeting the standard, PG&E is working with Hinkley residents to discontinue these interim programs by October 31. If you have questions about these programs, please contact us at (760) 253-7896.
For More Information If you would like more information, please contact us by phone at (760) 253-7896, by email at [email protected] or visit our Hinkley Community Resource Office located at 22999 Community Boulevard. Please note our new hours: We are open Monday through Thursday from 9 a.m. to 4 p.m. or by appointment. The office is closed on Fridays. Printed on 100%
recycled paper
Groundwater Remediation ProgramHinkley, California
Brook C
anyon Rd
Salinas Rd
Trindall Rd
Mountain General Rd
Mountain General RdHolstead Rd
Grass Hopper Rd
Sonoma St
Coon Canyon Rd
Burnt Tree Rd
Fossil Bed Rd
Fossil Bed Rd
Fossil Bed Rd
Fossil Bed Rd
Burnt Tree Rd
Hinkley Lockhart Rd - Santa Fe Ave
Alcudia Rd
Locust Rd
Flower R
d
Valley Wells R
d
Hope St
Frontier Rd
Riverview Rd
La Mour Rd
Shaves Ave
Old Hinkley Rd
Iron Mountain Rd
Yellowstone R
d
Manac
Palma Rd
Per
Santa F
Flower R
d
Jasper Rd
Cedar R
d
Birch R
d
Lenwood R
d
Summ
erset Rd
Hinkley R
dH
inkley Rd
Hinkley R
dH
inkley Rd
Hinkley R
d
Orchard R
d
Orchard Rd
Green Desert Rd
Sweeten Rd
Santa Fe Ave
Highway 58 erfield Hwy Blue Star Memorial Hwy CalfCanyon Hwy
Lockhart Fault
Hinkley R
d
Lenwood Rd
Lenwood R
d
National T
rails
Hwy
W
Main St
Mountain View
Rd
Pueblo R
d
Petra R
d
Blanca R
d
eas de trSe mues
Serra Rd
amientan nue
Mountain View
Rd
Dixie R
d
Informe de Progreso Estamos comprometidos a hacer lo que es correcto en Hinkley
Pacific Gas and Electric Company (PG&E) está comprometida a compartir información precisa y oportuna acerca de nuestros programas de remediación de aguas subterráneas y programas comunitarios en Hinkley. Este es el decimonoveno reporte de una serie de informes mensuales. Septiembre 2014
South Central Reinjection Area
Source Area In-situ
Reactive Zone
Central Area In-situ
Reactive Zone
Desert View Dairy Land
Treatment Unit
Serra R
d
Ac acia St
Car son Rd
Gr anada Rd
F r ontier Rd
es yeas agríc
Summ
erset Rd
Fairview R
d
Hervey R
d
Highcr es t Rd
Aquarius Rd
Ac acia St
or Rd
a Rd
e A ve
Thompson Rd
Al cudia Rd
Dixie R
d
Coon Canyon R
d
Santa Fe Ave
Barstow-Bak
Hinkl e y R
d Lockhart Fault
Hinkl e y R
d
Community Bl vd
Ranch Agricultural Unit
Agricultural Units Under Development 2014-2015
Agricultural Unit Upgrade 2014-2015
Agricultural Unit
Agricultural Unit
Agricultural Unit
Agricultural Unit
Fresh Water Injection
Progreso continúa con la limpieza a medida que las operaciones agrícolas se expanden Las primeras cuatro unidades nuevas de tratamiento agrícola en su sitio.
La reciente aprobación de la Agencia del Agua abrió el camino a nuevas áreas de tratamiento agrícola que van a adelantar nuestro éxito en el tratamiento de la pluma de cromo. La parcela de 60-acres, ubicados al sur de la lechería Desert View nombrada la Ranch Agricultural Treatment Unit (Unidad de Tratamiento Agrícola del Rancho, ATU por sus siglas en inglés), es una de cuatro nuevas áreas de tratamiento agrícola previstas durante el próximo año. En los próximos meses, se iniciará el trabajo para actualizar las áreas al norte de la nueva ATU del Rancho. Mientras que a principios del año entrante se planea construir nuevas áreas de tratamiento en dos parcelas al norte del Community Boulevard entre las carreteras Fairview y Summerset.
El tratamiento agrícola es un componente clave del programa de remediación de aguas subterráneas de PG&E en Hinkley. Se aplican aguas subterráneas con niveles bajos de cromo 6 directamente en la tierra donde se plantan los cultivos usando la irrigación de goteo. Las condiciones del suelo alrededor de las raíces de los cultivos convierten el cromo 6 en cromo 3, un mineral abundante en los suelos naturales. Una vez convertido, el cromo 3 deja las aguas subterráneas y pasa a formar parte del suelo circundante.
Como parte de los esfuerzos de contención hidráulica, más de 4 mil millones de galones de aguas subterráneas afectadas de cromo han sido extraídas para el uso beneficioso en las operaciones agrícolas y para el tratamiento in situ hasta junio de 2014. Hasta la fecha, la extracción de las aguas subterráneas para las operaciones agrícolas ha eliminado más de 2100 libras de cromo del acuífero superior.
Los trabajadores montan el nuevo pivote en la ATU del Rancho que será más de 760 pies de largo y equipado con tecnología de "arrastre y riego" para conservar agua.
Las tecnologías de tratamiento usadas por PG&E apoyan los procesos naturales y también promueven la eliminación de otros componentes molestos, tal como los nitratos, de la zona de aguas subterráneas. Al tratar la pluma de cromo 6, nuestros esfuerzos también han eliminado más de 100 toneladas de nitratos de las aguas subterráneas de Hinkley.
tr vas ár olas junto con ár at o existent a en uso.
Se mejora y se amplia el tratamiento en el área de origen En su trabajo con la Agencia del Agua, PG&E desarrolló planes para mejorar y ampliar el tratamiento in situ. Este verano, PG&E movilizó a contratistas y comenzaron el trabajo de construcción. Es posible que los residentes notaron los equipos de perforación y el personal instalando nuevos pozos en el área de origen, al sur del Community Boulevard, y en el área del sur central, al norte del Community Boulevard cerca de la carretera Summerset.
PG&E está usando el tratamiento in situ para lograr la limpieza en aquellas áreas de la pluma que tienen los niveles más altos de cromo 6. El proceso in situ comienza al inyectar material de calidad alimentaria (tal como alcohol de grano) en las aguas subterráneas afectadas para estimular el crecimiento de bacteria de origen natural dentro del suelo. El ciclo de crecimiento de la batería crea condiciones para convertir el cromo 6 en cromo 3, una substancia de origen natural.
El tratamiento in situ ha reducido las concen-traciones de cromo a través de 124 acres del núcleo de la pluma de más de 1000 partes por mil millones (ppb) a menos de 10 ppb en muchas áreas.
Los equipos instalan un nuevo pozo en el área de tratamiento in situ.
PG&E trabaja con los residentes en la transición de los programas de agua PG&E entiende y toma en serio las inquietudes de los residentes locales. Antes de que California estableciera un estándar de agua potable específico en cuanto al cromo 6, PG&E ofreció varios programas provisionales a los residentes elegibles de Hinkley para abordar las preocupaciones sobre los niveles de cromo 6 en el agua de los pozos domésticos. Estos programas incluyeron sistemas modernos de tratamiento de agua, agua embotellada y, a petición del propietario, compra de propiedad. PG&E siguió ofreciendo estos programas mientras que el Estado trabajaba para finalizar el estándar de cromo 6 en el agua potable.
El 1 de julio de 2014 el estado de California estableció un estándar en cuanto al cromo 6 en el agua potable de 10 partes por cada mil millones (ppb). PG&E monitorea los niveles de cromo en más de 400 pozos domésticos en el valle de Hinkley. Los niveles de cromo 6 en los pozos domésticos en uso por los residentes de Hinkley y las muestras por PG&E están muy por debajo de las 10 ppb. Al saber que todos los pozos domésticos cumplen con el estándar, PG&E está trabajando con los residentes de Hinkley para suspender estos programas interinos para el 31 de octubre. Si usted tiene preguntas sobre estos programas, comuníquese con nosotros al (760) 253-7896.
Para Más Información Si desea más información, comuníquese con nosotros al (760) 253-7896, por correo electrónico a [email protected] o visite nuestra oficina de recursos comunitarios en Hinkley ubicada en el 22999 Community Boulevard. La oficina está abierta de lunes a jueves de 9 a. m. a 4 p. m. o con cita. La oficina está cerrada los viernes.
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