1101 S Winchester Blvd., Ste. G 173 San Jose, CA (408) (408) fax Page 1 of 2

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1 San Jose Office September 28, 2018 Report Zanker Landscape Mateirals 675 Los Esteros Road San Jose, CA Attn: Beto Ochoa RE: ZB-PPM Reaction at 7.5 is slightly alkaline and with lime absent this is within the range preferred by most plants. The SAR value shows soluble sodium is adequately balanced by calcium and magnesium. Salinity (ECe), sodium, boron and chloride are all higher than preferred for most plants, particularly for sensitive plants such as seedlings and transplants. Several thorough leaching irrigations with a minimum of 3 to 4 inches of good quality water low in salts and boron are recommended in order to decrease the salinity, sodium, chloride and boron to a safer range. Organic content measured by loss on ignition at 16.8% dry weight is abundant and will assist greatly with respect to water and nutrient retention characteristics. Texture of the mix appeared quite favorable. Immediately available nitrogen is low and calcium and iron are fair. Potassium and sulfate are extremely abundant and the leaching irrigations will help decrease the potassium to a more preferable range. Gypsum incorporation is recommended in order to help improve the calcium level. Gypsum should be incorporated at a rate of 3 pounds per cubic yard of material before leaching irrigations are applied. The other required nutrients are in normal ranges to support healthy plant growth. After leaching has been completed, nitrogen will be the first nutrient that requires supplementing. This should be applied at the time of planting. If conventional fertilizer will be used a good option would be Ammonium Sulfate (21-0-0) at a rate of 5 pounds per 1000 square feet with reapplication every days or as plant color and growth dictates. If an organic program will be utilized, then in order to provide a good supply of nitrogen for a 3-4 month time frame a good combination would be 8 pounds Blood Meal and 16 pounds Feather Meal per 1000 square feet. If we can be of any further assistance, please feel free to contact us. Annmarie Lucchesi alucchesi@waypointanalytical.com ed 2 pages: beto@zankerrecycling.com 1101 S Winchester Blvd., Ste. G 173 San Jose, CA (408) (408) fax Page 1 of 2

2 Send To: Project : Zanker Landscape Materials 675 Los Esteros Road San Jose, CA ZB-PPM SOIL ANALYSIS Report No : Cust No : Date Printed : Date Received : Page : Lab Number : /25/ /19/ of Sample Id : ZB-PPM Test Salinity (ECe) Result 7.7 ds/m 1416 SATURATION EXTRACT - PLANT SUITABILITY Effect on Plant Growth Negligible Sensitive Crops Restricted Many Crops Restricted Only Tolerant Crops Satisfactory Few Crops Survive Sodium Adsorption Ratio (SAR) * Boron (B) Sodium (Na) 15.6 meq/l 987 Chloride (Cl) 40.9 meq/l 1473 Carbonate (CO3) Bicarbonate (HCO3) Fluoride (F) * Structure and water infiltration of mineral soils potentially adversely affected at SAR values higher than 6. Test Result Strongly Acidic Moderately Acidic Slightly Acidic Neutral Slightly Alkaline Moderately Alkaline Strongly Alkaline Qualitative Lime ph 7.5 s.u None Available-N Test Phosphorus (P) - Olsen Potassium (K) Boron (B) - sat. ext. Sulfate - sat. ext. Exch Aluminum Result Sufficiency Factor EXTRACTABLE NUTRIENTS SOIL TEST RATINGS Very Low Low Medium Optimum Very High Potassium - sat. ext meq/l Calcium (Ca) Calcium - sat. ext meq/l Magnesium (Mg) Magnesium - sat. ext meq/l Copper (Cu) Zinc (Zn) Manganese (Mn) Iron (Fe) meq/l NO3-N NH4-N Total Exchangeable Cations(TEC) meq/kg Cu, Zn, Mn and Fe were analyzed by DTPA extract. Half Sat Organic Matter Coarse 5-12 Gravel Fine 2-5 PARTICLE SIZE ANALYSIS Weight Percent of Sample Passing 2mm Screen Sand Very Coarse Coarse Med. to Very Fine Silt Clay USDA Soil Classification 25 % 16.8 % Graphical interpretation is a general guide. Optimum levels will vary by crop and objectives. Page 2 of 2

3 Sample Identification: Zbest Planter Mix Laboratory #: /2 Plant Available Nutrients for Greenhouse Growth Media Analyte: Results Units In Range? Method phs Value: 8.0 ph units High SME Electrical Conductivity (EC): mmhos/cm Very High SME + DTPA Nitrate (NO3-N): 20 mg/l of extract Low SME + DTPA Phosphorus (as P): 4 mg/l of extract Acceptable SME + DTPA Potassium (as K): 197 mg/l of extract Optimum SME + DTPA Calcium (Ca): 228 mg/l of extract Optimum SME + DTPA Magnesium (Mg): 101 mg/l of extract Optimum SME + DTPA Copper (Cu): 2.48 mg/l of extract High SME + DTPA Zinc (Zn): 20.0 mg/l of extract Acceptable SME + DTPA Iron (Fe): 6.1 mg/l of extract Low SME + DTPA Manganese (Mn): 32 mg/l of extract Low SME + DTPA Boron (B): 2.3 mg/l of extract Acceptable SME + DTPA Soluble Salts 7217 mg/l of extract Very High Calc (700 X EC) Sodium (Na): 709 mg/l of extract Acceptable SME + DTPA Chloride (Cl): 2013 mg/l of extract High SME + DTPA Moisture: 10.4 % as received NA deg C Organic Matter: 24.5 % dry wt NA deg C "mg/l of extract" means "mg per liter of the SME_DTPA extract"

4 Sample Identification: Zbest Planter Mix Laboratory #: /2 Greenhouse Growth Media Physical Properties Water Permeability (in/min) Water Permeability (cm/sec) 1.23 in/min by ASTM E cm/s Particle Size Distribution mm Fraction Passing Retained > percent by weight 25 to percent by weight 16 to percent by weight 9.5 to percent by weight 6.3 to percent by weight 4.0 to percent by weight 2.0 to percent by weight < percent by weight SUM as-received at Saturation Dry Weight Moisture percent by weight Organic Matter percent by weight Ash percent by weight SUM: Porosity percent by Volume Air Filled percent by Volume Water Filled percent by Volume Solid percent by Volume Bulk Density (lbs/cu-ft) lbs / cu-ft Bulk Density (g/cc) g / cc Particle Density (average) 1.46 g / cc

5 Sample Identification: Zbest Premium Planter Mix Laboratory #: /2 Plant Available Nutrients for Greenhouse Growth Media Analyte: Results Units In Range? Method phs Value: 8.5 ph units High SME Electrical Conductivity (EC): 6.21 mmhos/cm Very High SME + DTPA Nitrate (NO3-N): 1 mg/l of extract Low SME + DTPA Phosphorus (as P): 2 mg/l of extract Low SME + DTPA Potassium (as K): 335 mg/l of extract High SME + DTPA Calcium (Ca): 185 mg/l of extract Acceptable SME + DTPA Magnesium (Mg): 124 mg/l of extract Optimum SME + DTPA Copper (Cu): 0.80 mg/l of extract Acceptable SME + DTPA Zinc (Zn): 6.6 mg/l of extract Acceptable SME + DTPA Iron (Fe): 7 mg/l of extract Low SME + DTPA Manganese (Mn): 10 mg/l of extract Low SME + DTPA Boron (B): 1.1 mg/l of extract Acceptable SME + DTPA Soluble Salts 4347 mg/l of extract Very High Calc (700 X EC) Sodium (Na): 206 mg/l of extract Acceptable SME + DTPA Chloride (Cl): 1404 mg/l of extract High SME + DTPA Moisture: 16.8 % as received NA deg C Organic Matter: 21.1 % dry wt NA deg C "mg/l of extract" means "mg per liter of the SME_DTPA extract"

6 Sample Identification: Zbest Premium Planter Mix Laboratory #: /2 Greenhouse Growth Media Physical Properties Water Permeability (in/min) Water Permeability (cm/sec) 0.74 in/min by ASTM E cm/s Particle Size Distribution mm Fraction Passing Retained > percent by weight 25 to percent by weight 16 to percent by weight 9.5 to percent by weight 6.3 to percent by weight 4.0 to percent by weight 2.0 to percent by weight < percent by weight SUM as-received at Saturation Dry Weight Moisture percent by weight Organic Matter percent by weight Ash percent by weight SUM: Porosity percent by Volume Air Filled percent by Volume Water Filled percent by Volume Solid percent by Volume Bulk Density (lbs/cu-ft) lbs / cu-ft Bulk Density (g/cc) g / cc Particle Density (average) 1.51 g / cc