ATTACHMENT F - 892-MILL-FY20-003_Soil Test Report_3.5.2019.pdf

Soil Analyses Plant Analyses Water Analyses

WALLACE LABORATORIES, LLC

365 Coral Circle

El Segundo, CA 90245 phone (310) 615-0116 fax (310) 640-6863

March 5, 2019

Larry Hall, larry.hall@horizononline.com Horizon Distributors Inc.

7366 Engineer Road San Diego, CA 92111

RE: Department of Veteran Affairs, H714, P.O. No. 2F091940

Dear Larry, Acidity/Alkalinity – These samples are modestly alkaline. The average pH is 7.34. The pH values range from 7.01 to 7.48.

Salinity – Salinity is moderate at 0.83 millimho/cm on average. Salinity ranges from 0.47 to 1.14 millimho/cm.

Fertility -

Nitrogen – Nitrogen is moderate.

Phosphorus – Phosphorus is high.

Potassium – Potassium is high.

Iron – Iron is high.

Manganese – Manganese is modestly high.

Zinc – Zinc is high.

Copper – Copper is high.

Boron – Boron is modest.

Magnesium – Magnesium is high.

Sulfur – Sulfur is modest.

Sodicity – Available sodium is modest on average. SAR (sodium adsorption ratio) is 1.6 on average. It ranges from 1.2 to 2.2.

Soil organic matter – Soil organic matter is well supplied at 5.69% on a dry weight basis on average. It ranges from 5.01% to 6.08% on a dry weight basis.

Texture – The soil textures are sandy loam. Based on the non-gravel fraction, they contain on average 62% sand, 23% silt and 15% clay. The gravel content is 2% on average.

Cation Exchange Capacity - The cation exchange capacity is 16.6 milliequivalents per 100 grams on average. Exchangeable potassium is modest. Exchangeable magnesium is slightly high. Exchangeable calcium is modest. Exchangeable sodium is low.

Exchangeable hydrogen is slightly high.

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ATTACHMENT E

Horizon Distributors, March 5, 2019, page 2

Soil Analyses Plant Analyses Water Analyses

Water percolation – The estimated rate of water percolation based on Soil Water Characteristics version 6.02.74 model developed by Keith Saxton of the USDA is moderate on average at 1.83 inches per hour for normal soil compaction. The model is based on the soil texture, percent gravel and percent soil organic matter. The rates range from 1.67 to 1.98 inches per hour.

Heavy metals - The concentrations of common non-essential heavy metals are low.

Recommendations

These six soils are suitable as they are to support vigorous plant growth with the addition of gypsum. Apply gypsum at 10 pounds per 1,000 square feet.

For maintenance fertilization, apply Yara or Simplot calcium ammonium nitrate (27-0-0) at 4 pounds per 1,000 square feet about once per quarter or pH- neutral nitrogen material such as urea (46-0-0), urea formaldehyde (38-0-0), coated urea, blood meal, feather meal, soybean meal, etc.

Monitor the planting with periodic testing. Adjust the maintenance program as needed.

Sincerely, Garn A. Wallace, Ph. D.

GAW:n

WALLACE LABS SOILS REPORT Print Date Mar. 4, 2019 Receive Date 3/1/19

365 Coral Circle Location Department of Veteran Affairs, H714, P.O. No. 2F091940 El Segundo, CA 90245 Requester Larry Hall, Horizon Distributors

(310) 615-0116 graphic interpretation: * very low, ** low, *** moderate ammonium bicarbonate/DTPA * * * * high, * * * * * very high extractable - mg/kg soil Sample ID Number 19-63-02 19-63-03 19-63-04 Interpretation of data Sample Description #1 #2 #3 low medium high elements graphic graphic graphic 0 - 7 8-15 over 15 phosphorus 36.29 * **** 45.10 * **** 29.93 * **** 0-60 60 -120 121-180 potassium 220.19 * **** 250.07 * **** 258.60 * **** 0 - 4 4 - 10 over 10 iron 85.48 * **** 109.91 * **** 89.51 * **** 0- 0.5 0.6- 1 over 1 manganese 2.57 * *** 2.68 * *** 2.09 * *** 0 - 1 1 - 1.5 over 1.5 zinc 13.95 * **** 27.56 * **** 12.99 * **** 0- 0.2 0.3- 0.5 over 0.5 copper 2.18 * *** 3.19 * **** 1.92 * *** 0- 0.2 0.2- 0.5 over 1 boron 0.18 * * 0.17 * * 0.18 * * calcium 480.60 * *** 474.75 * *** 477.41 * *** magnesium 223.12 * **** 210.07 * **** 273.58 * **** sodium 79.52 * * 69.88 * * 91.85 * * sulfur 25.08 * * 45.44 * * 28.87 * * molybdenum 0.08 * ** 0.07 * ** 0.06 * ** nickel 0.92 * 0.84 * 0.74 *

The following trace aluminum n d * n d * n d * elements may be toxic arsenic 0.03 * 0.06 * 0.05 * The degree of toxicity barium 0.61 * 0.73 * 0.69 * depends upon the pH of cadmium 0.21 * 0.24 * 0.15 * the soil, soil texture, chromium 0.08 * 0.10 * 0.03 * organic matter, and the cobalt 0.10 * 0.04 * 0.09 * concentrations of the lead 1.95 * * 3.20 * * 1.80 * * individual elements as lithium 0.32 * 0.31 * 0.32 * well as to their interactions. mercury n d * n d * n d * selenium n d * n d * n d * The pH optimum depends silver n d * n d * n d * upon soil organic strontium 3.28 * 3.54 * 3.45 * matter and clay content- tin n d * n d * n d * for clay and loam soils: vanadium 1.10 * * 1.06 * * 1.14 * * under 5.2 is too acidic

6.5 to 7 is ideal Saturation Extract over 9 is too alkaline pH value 7.33 *** 7.01 *** 7.39 *** The ECe is a measure of ECe (milli- 0.74 ** 1.04 *** 0.85 *** the soil salinity: mho/cm) millieq/l millieq/l millieq/l 1-2 affects a few plants calcium 49.2 2.5 85.5 4.3 61.5 3.1 2-4 affects some plants, magnesium 19.6 1.6 27.4 2.3 20.3 1.7 > 4 affects many plants. sodium 46.8 2.0 48.7 2.1 51.6 2.2 potassium 23.5 0.6 36.2 0.9 24.3 0.6 cation sum 6.7 9.6 7.6 problems over 150 ppm chloride 45 1.3 45 1.3 37 1.1 nitrate as N 36 2.6 43 3.1 47 3.4 phosphorus as P 1.6 0.1 1.3 0.0 0.8 0.0 toxic over 800 sulfate as S 29.1 1.8 58.1 3.6 35.6 2.2 anion sum 5.7 8.0 6.7 toxic over 1 for many plants boron as B 0.17 * 0.18 * 0.22 ** increasing problems start at 3 SAR 1.4 * 1.2 * 1.5 * est. gypsum requirement-lbs./1000 sq. ft. 14 12 23 calculated infiltration rate inches/hour 1.85 1.67 1.98 soil texture sandy loam gravel > 2 mm sandy loam gravel > 2 mm sandy loam gravel > 2 mm sand 58.6% 1.9% 59.4% 2.3% 61.3% 2.0% silt 26.4% gravel > 1/4 inch 24.4% gravel > 1/4 inch 24.4% gravel > 1/4 inch clay 15.0% 0.3% 16.2% 0.0% 14.4% 0.6% lime (calcium carbonate) no gravel > 1/2 inch no gravel > 1/2 inch no gravel > 1/2 inch Total nitrogen 0.285% 0.0% 0.277% 0.0% 0.287% 0.0% Total carbon 3.037% 3.015% 2.927% carbon:nitrogen ratio 10.7 10.9 10.2 organic matter based on carbon 6.07% 6.03% 5.85% moisture content of soil 18.8% 17.3% 19.6% half saturation percentage 35.8% 31.3% 33.2% ideal percentages of cations % saturation % saturation % saturation abt 5 % potassium millieq K 0.51 3% 0.60 4% 0.62 4% < 3% sodium millieq Na 0.21 1% 0.18 1% 0.26 2% abt 70% calcium millieq Ca 10.18 62% 9.93 62% 10.95 64% 10 - 15% magnesium millieq Mg 2.73 17% 2.48 16% 3.05 18% 5-10% hydrogen millieq H 2.80 17% 2.80 18% 2.16 13% total millieq/100 grams 16.44 15.99 17.05 Elements are expressed as mg/kg dry soil or mg/l for saturation extract.

pH and ECe are measured in a saturation paste extract. nd means not detected.

Analytical data determined on soil fraction passing a 2 mm sieve.

WALLACE LABS SOILS REPORT Print Date Mar. 4, 2019 Receive Date 3/1/19

365 Coral Circle Location Department of Veteran Affairs, H714, P.O. No. 2F091940 El Segundo, CA 90245 Requester Larry Hall, Horizon Distributors

(310) 615-0116 graphic interpretation: * very low, ** low, *** moderate ammonium bicarbonate/DTPA * * * * high, * * * * * very high extractable - mg/kg soil Sample ID Number 19-63-05 19-63-06 19-63-07 Interpretation of data Sample Description #4 #5 #6 low medium high elements graphic graphic graphic 0 - 7 8-15 over 15 phosphorus 32.58 * **** 33.35 * **** 29.48 * **** 0-60 60 -120 121-180 potassium 200.39 * **** 268.38 * **** 227.14 * **** 0 - 4 4 - 10 over 10 iron 100.85 * **** 44.05 * **** 37.10 * **** 0- 0.5 0.6- 1 over 1 manganese 1.45 * *** 1.58 * *** 1.62 * *** 0 - 1 1 - 1.5 over 1.5 zinc 14.31 * **** 16.11 * **** 8.60 * *** 0- 0.2 0.3- 0.5 over 0.5 copper 1.43 * *** 1.07 * *** 1.20 * *** 0- 0.2 0.2- 0.5 over 1 boron 0.17 * * 0.17 * * 0.15 * * calcium 465.95 * *** 468.25 * *** 425.76 * *** magnesium 257.06 * **** 283.20 * **** 283.98 * **** sodium 114.04 * ** 100.19 * ** 101.68 * ** sulfur 21.52 * 20.38 * 75.61 * * molybdenum 0.06 * ** 0.08 * ** 0.07 * ** nickel 0.46 * 0.66 * 0.52 *

The following trace aluminum n d * n d * n d * elements may be toxic arsenic 0.06 * n d * 0.02 * The degree of toxicity barium 0.63 * 0.55 * 0.51 * depends upon the pH of cadmium 0.14 * 0.12 * 0.10 * the soil, soil texture, chromium 0.04 * 0.01 * n d * organic matter, and the cobalt 0.08 * 0.06 * 0.07 * concentrations of the lead 1.56 * * 1.06 * * 0.96 * individual elements as lithium 0.33 * 0.30 * 0.27 * well as to their interactions. mercury n d * n d * n d * selenium n d * n d * n d * The pH optimum depends silver n d * n d * n d * upon soil organic strontium 3.83 * 3.28 * 2.73 * matter and clay content- tin n d * n d * n d * for clay and loam soils: vanadium 0.89 * 0.86 * 0.72 * under 5.2 is too acidic

6.5 to 7 is ideal Saturation Extract over 9 is too alkaline pH value 7.40 *** 7.48 *** 7.43 *** The ECe is a measure of ECe (milli- 0.47 ** 0.76 ** 1.14 *** the soil salinity: mho/cm) millieq/l millieq/l millieq/l 1-2 affects a few plants calcium 22.8 1.1 47.4 2.4 96.7 4.8 2-4 affects some plants, magnesium 8.6 0.7 18.6 1.5 31.8 2.6 > 4 affects many plants. sodium 49.1 2.1 59.4 2.6 75.3 3.3 potassium 14.9 0.4 25.4 0.6 27.5 0.7 cation sum 4.4 7.1 11.4 problems over 150 ppm chloride 30 0.8 34 0.9 30 0.8 nitrate as N 15 1.0 41 2.9 29 2.1 phosphorus as P 2.1 0.1 3.0 0.1 2.7 0.1 toxic over 800 sulfate as S 23.9 1.5 31.0 1.9 118.4 7.4 anion sum 3.4 5.9 10.4 toxic over 1 for many plants boron as B 0.18 * 0.16 * 0.07 * increasing problems start at 3 SAR 2.2 ** 1.8 ** 1.7 ** est. gypsum requirement-lbs./1000 sq. ft. 22 28 29 calculated infiltration rate inches/hour 2.26 1.47 1.83 soil texture sandy loam gravel > 2 mm sandy loam gravel > 2 mm sandy loam gravel > 2 mm sand 64.1% 1.0% 64.1% 4.4% 66.5% 2.4% silt 22.8% gravel > 1/4 inch 20.3% gravel > 1/4 inch 19.0% gravel > 1/4 inch clay 13.0% 0.0% 15.6% 0.6% 14.4% 0.2% lime (calcium carbonate) no gravel > 1/2 inch slight gravel > 1/2 inch slight gravel > 1/2 inch Total nitrogen 0.291% 0.0% 0.250% 0.0% 0.239% 0.0% Total carbon 3.039% 2.543% 2.503% carbon:nitrogen ratio 10.4 10.2 10.5 organic matter based on carbon 6.08% 5.09% 5.01% moisture content of soil 14.2% 14.3% 10.9% half saturation percentage 34.1% 28.5% 27.9% ideal percentages of cations % saturation % saturation % saturation abt 5 % potassium millieq K 0.52 3% 0.68 4% 0.57 3% < 3% sodium millieq Na 0.36 2% 0.30 2% 0.28 2% abt 70% calcium millieq Ca 9.94 61% 10.38 63% 11.51 67% 10 - 15% magnesium millieq Mg 3.01 18% 3.09 19% 3.08 18% 5-10% hydrogen millieq H 2.56 16% 1.92 12% 1.84 11% total millieq/100 grams 16.38 16.37 17.28 Elements are expressed as mg/kg dry soil or mg/l for saturation extract.

pH and ECe are measured in a saturation paste extract. nd means not detected.

Analytical data determined on soil fraction passing a 2 mm sieve.

Larry Hall, Horizon Distributors Department of Veteran Affairs, H714, P.O. No. 2F091940 M arch 4, 2019 sample ID description pH salinity chloride IR texture rganic matter SAR nitratephosphoruspotassium ironmanganese zinc copper boronmagnesium sodium sulfur lybdenum aluminum arsenic barium cadmiumchromium cobalt lead lithium mercury nickel selenium silver strontium tin vanadium lime moisture half sat sand silt clay gravel nitrogen carbon CE K CE Na CE Ca CE Mg CE H CEC % K % Na % Ca % Mg % H 19-63-02 #1 7.33 0.74 45 1.85 sandy loam 6.07% 1.4 36 36.3 220 85.48 2.57 13.95 2.18 0.18 223 80 25 0.08 n d 0.03 0.61 0.21 0.08 0.10 1.95 0.32 n d 0.92 n d n d 3.28 n d 1.10 no 18.8% 35.8% 58.6% 26.4% 15.0% 1.9% 0.285% 3.037% 0.51 0.21 10.18 2.73 2.80 16.44 3.1% 1.3% 62.0% 16.6% 17.0% 19-63-03 #2 7.01 1.04 45 1.67 sandy loam 6.03% 1.2 43 45.1 250 109.91 2.68 27.56 3.19 0.17 210 70 45 0.07 n d 0.06 0.73 0.24 0.10 0.04 3.20 0.31 n d 0.84 n d n d 3.54 n d 1.06 no 17.3% 31.3% 59.4% 24.4% 16.2% 2.3% 0.277% 3.015% 0.60 0.18 9.93 2.48 2.80 15.99 3.7% 1.1% 62.1% 15.5% 17.5% 19-63-04 #3 7.39 0.85 37 1.98 sandy loam 5.85% 1.5 47 29.9 259 89.51 2.09 12.99 1.92 0.18 274 92 29 0.06 n d 0.05 0.69 0.15 0.03 0.09 1.80 0.32 n d 0.74 n d n d 3.45 n d 1.14 no 19.6% 33.2% 61.3% 24.4% 14.4% 2.0% 0.287% 2.927% 0.62 0.26 10.95 3.05 2.16 17.05 3.7% 1.5% 64.2% 17.9% 12.7% 19-63-05 #4 7.40 0.47 30 1.85 sandy loam 6.08% 2.2 15 32.6 200 100.85 1.45 14.31 1.43 0.17 257 114 22 0.06 n d 0.06 0.63 0.14 0.04 0.08 1.56 0.33 n d 0.46 n d n d 3.83 n d 0.89 no 14.2% 34.1% 64.1% 22.8% 13.0% 1.0% 0.291% 3.039% 0.52 0.36 9.94 3.01 2.56 16.38 3.2% 2.2% 60.6% 18.4% 15.6% 19-63-06 #5 7.48 0.76 34 1.67 sandy loam 5.09% 1.8 41 33.3 268 44.05 1.58 16.11 1.07 0.17 283 100 20 0.08 n d n d 0.55 0.12 0.01 0.06 1.06 0.30 n d 0.66 n d n d 3.28 n d 0.86 slight 14.3% 28.5% 64.1% 20.3% 15.6% 4.4% 0.250% 2.543% 0.68 0.30 10.38 3.09 1.92 16.37 4.1% 1.8% 63.4% 18.9% 11.7% 19-63-07 #6 7.43 1.14 30 1.98 sandy loam 5.01% 1.7 29 29.5 227 37.10 1.62 8.60 1.20 0.15 284 102 76 0.07 n d 0.02 0.51 0.10 n d 0.07 0.96 0.27 n d 0.52 n d n d 2.73 n d 0.72 slight 10.9% 27.9% 66.5% 19.0% 14.4% 2.4% 0.239% 2.503% 0.57 0.28 11.51 3.08 1.84 17.28 3.3% 1.6% 66.6% 17.8% 10.6% average 7.34 0.83 37 1.83 sandy loam 5.69% 1.6 35 34.5 237 77.82 2.00 15.58 1.83 0.17 255 93 36 0.07 0.00 0.04 0.62 0.16 0.04 0.07 1.75 0.31 0.00 0.69 0.00 0.00 3.35 0.00 0.96 0.00 15.8% 31.8% 62.3% 22.9% 14.8% 2.3% 0.272% 2.844% 0.58 0.27 10.48 2.91 2.35 16.58 3.5% 1.6% 63.2% 17.5% 14.2% minimum 7.01 0.47 30 1.67 5.01% 1.2 15 29.5 200 37.10 1.45 8.60 1.07 0.15 210 70 20 0.06 0.00 0.00 0.51 0.10 0.00 0.04 0.96 0.27 0.00 0.46 0.00 0.00 2.73 0.00 0.72 0.00 10.9% 27.9% 58.6% 19.0% 13.0% 1.0% 0.239% 2.503% 0.51 0.18 9.93 2.48 1.84 15.99 3.1% 1.1% 60.6% 15.5% 10.6% maximum 7.48 1.14 45 1.98 6.08% 2.2 47 45.1 268 109.91 2.68 27.56 3.19 0.18 284 114 76 0.08 0.00 0.06 0.73 0.24 0.10 0.10 3.20 0.33 0.00 0.92 0.00 0.00 3.83 0.00 1.14 0.00 19.6% 35.8% 66.5% 26.4% 16.2% 4.4% 0.291% 3.039% 0.68 0.36 11.51 3.09 2.80 17.28 4.1% 2.2% 66.6% 18.9% 17.5% target 6.5-7.9 0.5-3 < 150 sandy loam 3% - 5% < 3 20-30 12-20 120-180 4-15 0.6-3 1-3 0.2-3 0.2-0.5 25-100 < 200 25-100 < 3 < 1 no abt 5% < 3% abt 70% 10%-15% 5%-10%