Skip to main content

Full Water Quality Report

Download Raw Water Quality Data CSV

Sample Point - F2(source)

Download Sample Point Report CSV  /  Inflow: Yes / Outflow: No
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2012-05-11Import--2.003.383.45--18.9----167300207.36----41.23--11.47--69.43--1243.626----------------------MORROW----------------------------------------------
2015-04-29Import----3.583.46--15.5----184200226.72----36.06--11.25--46.97--1056.5<5----------------------Marrow----------------------------------------------
Minimum:0--2.003.383.45--15.5----167300.00207.36----36.06--11.25--46.97--1056.526----------------------0----------------------------------------------
Maximum:0--2.003.583.46--18.9----184200.00226.72----41.23--11.47--69.43--1243.626----------------------0----------------------------------------------
Average:0--23.483.46--17.2----1,75800217.0----38.65--11.36--58.20--1,150.126.0----------------------0----------------------------------------------
Range:0--00.20.0099999999999998--3.4----1690019.36----5.17--0.22--22.46--187.10----------------------0----------------------------------------------
Median:0--23.483.46--17.2----1757.500217.04----38.65--11.36--58.2--1150.0526----------------------0----------------------------------------------
Loading (lb/day):----4.980.99--0.28--1.67--

Sample Point Description: AMD source to the Filson 2 system

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.


Sample Point - F2(F2C1spillway)

Download Sample Point Report CSV  /  Inflow: Yes / Outflow: No
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2009-09-15Import--73.353.37--19.1----164600228.14----35.03--7.76--49.9--924.528----------------------Morrow----------------------------------------------
2010-04-13Import----3.653.52--12.9----17900ND176.79----1.63--10.67--74.32--1292.32----------------------MORROW----------------------------------------------
2012-05-11Import----3.453.51--16.5----174100254.92----45.66--12.93--83.09--1158.98----------------------MORROW----------------------------------------------
2015-04-29Import----3.43.36--13----186300248.77----35.37--12.73--49.82--1141.3<5----------------------Marrow----------------------------------------------
2018-05-09Import----3.353.70--17.4----195600202.58----21.54--13.12--53.09--1067.75----------------------AR----------------------------------------------
2018-06-19Import----3.313.08--23.9----174300212.33----24.25--9.41--51.96--983.4<5----------------------ROBISON----------------------------------------------
2023-05-08--Measured26.43.333.67--15.3----14860<0.10146.78----5.7--59.3--35.94--765.212----------------------------------------------------------------------
Minimum:0073.313.08--12.9----148600146.78----1.63--7.76--35.94--765.22----------------------0----------------------------------------------
Maximum:0026.43.653.70--23.9----195600254.92----45.66--59.3--83.09--1292.328----------------------0----------------------------------------------
Average:00173.413.46--16.9----1,74600210.0----24.17--17.99--56.87--1,047.611.0----------------------0----------------------------------------------
Range:0019.40.340.62--11----47000108.14----44.03--51.54--47.15--527.126----------------------0----------------------------------------------
Median:0016.73.353.51--16.5----174300212.33----24.25--12.73--51.96--1067.78----------------------0----------------------------------------------
Loading (lb/day):----32.892.38--9.74--7.8--

Sample Point Description: Spillway between SAPS2 and Aerobic Pond; Representative of raw AMD?

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.


Sample Point - F2(F2C1)

Download Sample Point Report CSV  /  Inflow: No / Outflow: No
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2009-09-15Import--35.966.13--14.8----1804226149.36136.48----94.31--2.28--46.96--1091.110----------------------Morrow----------------------------------------------
2010-04-13Import--3.05.936.06--11.4----18.9495.0101.8344.88----27.38--0.05--72.59--1470.246----------------------MORROW----------------------------------------------
2012-05-11Import--25.696.34--13.9----1957127132.47106.66----95.18--1.87------1334.49------65.95--------------MORROW--G&C------------------------------------------
2015-04-29Import----66.14--------185785124.98121.47----94.25--2.22--45.14--971.727----------------------Marrow----------------------------------------------
2018-05-09Import----6.156.01--13.6----1964160126.7132.84----61.15--1.14--53.65--1197.233----------------------AR----------------------------------------------
2018-06-19Import----6.086.22--19.3----1891204184.0144.78----88.77--0.92--55.67--1119.912----------------------ROBISON----------------------------------------------
Minimum:0--25.696.01--11.4----18.9485101.8332.84----27.38--0.05--45.14--971.79------65.95--------------0--0------------------------------------------
Maximum:0--36.156.34--19.3----1964226184.01136.48----95.18--2.28--72.59--1470.246------65.95--------------0--0------------------------------------------
Average:0--35.976.15--14.6----1,582149.5013781.2----76.84--1.41--54.80--1,197.422.8------65.95--------------0--0------------------------------------------
Range:0--10.460.33--7.9----1945.0614182.18103.64----67.8--2.23--27.45--498.537------0--------------0--0------------------------------------------
Median:0--35.986.14--13.9----1874143.5129.5975.77----91.51--1.51--53.65--1158.5519.5------65.95--------------0--0------------------------------------------
Loading (lb/day):4.884.083.032.23--0.04--2.16--

Sample Point Description:

Effluent of Filson 2 SAPS 2

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.


Sample Point - F2(Aerobic Pond Leak)

Download Sample Point Report CSV  /  Inflow: No / Outflow: No
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2009-09-15Import----3.123.23--22.8----173400199.79----12--6.13--48.31--1035.615----------------------Morrow----------------------------------------------
2010-04-13Import----3.303.26--16.6----17410ND180.71----111.92--8.43--35.62--1388.91----------------------Morrow----------------------------------------------
2012-05-11Import----3.323.3--17.9----17230ND224.07----29.23--9.9------1164.98------69.08--------------MORROW--G&C------------------------------------------
2015-04-29Import----3.653.39--15.7----177100198.43----31.36--10.1--46.04--1098.97----------------------Marrow----------------------------------------------
Minimum:0----3.123.23--15.7----172300180.71----12--6.13--35.62--1035.61------69.08--------------0--0------------------------------------------
Maximum:0----3.653.39--22.8----177100224.07----111.92--10.1--48.31--1388.915------69.08--------------0--0------------------------------------------
Average:0----3.353.30--18.3----1,74200200.8----46.13--8.64--43.32--1,172.17.8------69.08--------------0--0------------------------------------------
Range:0----0.530.16--7.1----480043.36----99.92--3.97--12.69--353.314------0--------------0--0------------------------------------------
Median:0----3.313.28--17.25----1737.500199.11----30.3--9.17--46.04--1131.97.5------69.08--------------0--0------------------------------------------
Loading (lb/day):------------------

Sample Point Description: Leak in Aerobic Pond

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.


Sample Point - F3(SapDis-R)

Download Sample Point Report CSV  /  Inflow: No / Outflow: Yes
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2009-09-15Import--85.576.02--18.6----1749211107.49178.29----103--0.8--46.11--1118.916----------------------Morrow----------------------------------------------
2010-04-13Import----5.726.90--10.8----136070.0130.35-90.16----89.24--0.96--55.93--682.433----------------------Morrow----------------------------------------------
2012-05-11Import--65.76.02--12.9----16418978.62193.23----103--1.19------1146.89------53.57--------------MORROW--G&C------------------------------------------
2015-04-29Import----5.45.53--12----1652743.55204.67----92--2.5--38.69--929.311----------------------Marrow----------------------------------------------
2018-05-09Import----5.775.58--11.7----17046855.57191.64----95.00--1.73--46.86--1032.4<5----------------------AR----------------------------------------------
2018-06-19Import----5.745.61--17.9----15688057.94179.10----97.09--1.62--43.12--957.18----------------------ROBISON----------------------------------------------
2023-05-08--Measured2.65.956.09--11.5----141910043.68179.14----78.56--0.77--30.02--650.517----------------------------------------------------------------------
Minimum:002.65.45.53--10.8----1360743.55-90.16----78.56--0.77--30.02--650.58------53.57--------------0--0------------------------------------------
Maximum:0085.956.90--18.6----1749211130.35204.67----103--2.5--55.93--1146.833------53.57--------------0--0------------------------------------------
Average:0065.695.96--13.6----1,58589.2974148.0----93.98--1.37--43.46--931.115.7------53.57--------------0--0------------------------------------------
Range:005.40.551.37--7.8----38920486.8294.83----24.44--1.73--25.91--496.325------0--------------0--0------------------------------------------
Median:0065.726.02--12----16418057.94179.14----95--1.19--44.62--957.113.5------53.57--------------0--0------------------------------------------
Loading (lb/day):9.945.7912.236.6--0.06--2.69--

Sample Point Description: One of two final Effluent points; Effluent of right pipe of Filson 2 and 3 SAPS 3

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.


Sample Point - F3(SapDis-L)

Download Sample Point Report CSV  /  Inflow: No / Outflow: Yes
Date
Source
Method of Flow
Flow - Field (gal/min)
pH - Field (S.U.)
pH - Lab (S.U.)
ORP - Field (mvolts)
Temp - Field (C)
D. O (mg/L) Field
D. O (mg/L) Lab
Cond - Lab (umhos/cm)
Alkalinity - Field (mg/L)
Alkalinity - Lab (mg/L)
Acidity - Lab (mg/L)
T. Fe - Field (mg/L)
Fe+2 - Lab (mg/L)
T. Fe - Lab (mg/L)
D. Fe - Lab (mg/L)
T. Al - Lab (mg/L)
D. Al - Lab (mg/L)
T. Mn - Lab (mg/L)
D. Mn - Lab (mg/L)
Sulfate (Mg/L) Lab
TSS - Lab (mg/L)
Ca (Total) (mg/L) Lab
Ca (Dissolved) (mg/L) Lab
Chloride (Total) (mg/L) Lab
Mg (Total) (mg/L) Lab
Mg (Dissolved) (mg/L) Lab
T. PO4 (mg/L)
D. PO4 (mg/L)
K (mg/L) Lab
Full - Na (mg/L) Lab
Zn (mg/L) Lab
Zn (Dissolved) (mg/L) Lab
Sampler Person
Sampler Company
Sampler Lab
Comments
Specific Conductance Field (mS/cm)
Cd (Total) (mg/L)
Carbon (Total) (mg/L)
Be (Total) (mg/L)
Ba (Total) (mg/L)
Boron (Total) (mg/L)
As (Total) (mg/L)
Se (Total) (mg/L)
Sb (Total) (mg/L)
Pb (Total) (mg/L)
Sn (Total) (mg/L)
V (Total) (mg/L)
TSS (mg/L)
Ni (Total) (mg/L)
Cu (Total) (mg/L)
Cr (Total) (mg/L)
Hardness (mg/L)
Hg (Total) (mg/L)
Mo (Total) (mg/L)
Nitrate (Total) (mg/L)
2009-09-15Import--1.56.196.52--19.5----1732221165.9722.31----39.28--0.27--42.09--902.211----------------------Morrow----------------------------------------------
2010-04-13Import----6.296.51--11.3----1444200.0226.80-56.06----96.21--<0.04--27.83--860.345----------------------Morrow----------------------------------------------
2012-05-11Import--1.56.026.33--15.1----1592127115.15130.15----110.36--0.06------105027------48.22--------------MORROW--G&C------------------------------------------
2015-04-29Import----6.276.21--12.2----1849149200.4957.82----101.3--<0.10--32.98--929.326----------------------Marrow----------------------------------------------
2018-05-09Import----6.366.14--12.3----1827104208.11-25.47----96.12--0.13--41.34--1002.923----------------------AR----------------------------------------------
2023-05-08--Measured2.66.26.44--12.7----153423681.52-70.75----87.84--<0.10--25.6--73750----------------------------------------------------------------------
Minimum:001.56.026.14--11.3----144410481.52-70.75----39.28--0.06--25.6--73711------48.22--------------0--0------------------------------------------
Maximum:002.66.366.52--19.5----1849236226.80130.15----110.36--0.27--42.09--105050------48.22--------------0--0------------------------------------------
Average:0026.226.36--13.9----1,663172.831669.7----88.52--0.15--33.97--913.630.3------48.22--------------0--0------------------------------------------
Range:001.10.340.38--8.2----405132145.28200.9----71.08--0.21--16.49--31339------0--------------0--0------------------------------------------
Median:001.56.246.39--12.5----1662174.5183.23-1.58----96.17--0.13--32.98--915.7526.5------48.22--------------0--0------------------------------------------
Loading (lb/day):4.552.540.181.81--0--0.78--

Sample Point Description: One of two Final Effluent points; Effluent of Left pipe of Filson 3 SAPS 3

  1. Records with no value are not included in statistical calculations.
  2. Values lower than the minimum detection limit are assumed to be 0.
  3. Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
  4. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.

To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.