Attachment_7 _Geotech_Summary.pdf

EnviroBlend® Application

EnviroBlend is a dry granular or milled material that can be purchased in 2000# Supersacks or bulk. The single consideration with treatment is making sure product is homogeneously mixed within the matrix (soil, waste, etc.). There is no preferred method for mixing. Generally, clients utilize trackhoes, backhoes, rotary‐head mixers, pug‐mills, or agricultural tillers.

By weight, amendment is added to matrix and mixed thoroughly, followed by conformational sampling. There no cure time and no additives (e.g. water) or activator(s) need be mixed with the product for treatment. If not using a batch plant or pug mill, it is advisable to parcel out soil if not already residing in cells or piles. This will allow for more careful metering of amendment.

EnviroBlend® Handling

Store product in a dry, protected place. Do not allow water to penetrate impoundment, silo, or Supersack. Significant or repeated exposure to precipitation may cause the product to clump or form a crust. If surficial hardening occurs due to moisture exposure, the product can be crushed and used as normal.

With bulk piles of product, ground and top coverage tarps are recommended to keep product dry from precipitation and from wicking moisture from the ground. For Supersacks, even though sacks are water resistant and shrink‐wrapped to pallets, tarping or covered storage of Supersacks is recommended to prevent product exposure to precipitation or ponded water – on the ground or on the sack – especially for prolonged (months) product staging time.

For finer products, minimize fugitive particulates during material handling and transfer by carefully discharging product and/or active water mist or curtain.

For additional information about EnviroBlend products for environmental treatment applications, please contact Derek Pizarro at 610‐828‐6929 x238.

Sample Name Ursus Lab ID Copper Lead

Fines 14-10024 456 7,590 Ursus Lab ID Chemical Percentage Pretest pH Solution Final pH Copper mg/L Lead mg/L

Fines 14-10024 Untreated - 1.93 TCLP 1 5.53 1.34 103

EnviroBlend® CS 2.0% - TCLP 1 6.80 0.079 4.77

3.0% - TCLP 1 9.43 0.031 0.12

NOTES:

1. The screening TCLP test is a modified, scaled-down TCLP leaching test that gives results that are similar to those of a standard TCLP test on the waste material. The screening test is not suitable for regulatory submittals.

2. Premier Chemicals product EnviroBlend® in the ground form was used in the treatability study. Other products and particle sizes should be tested to ensure that they provide comparable results prior to using the other products.

3 Th t t bilit lt d t t th ff t f th t t t th l t t d E t l ti f th lt t t t t i t d it d d th t ti f th l ll t d

TREATABILITY STUDY RESULTS

Premier: Liesch Associates

October 24, 2014

Compositional Results (mg/kg)

Sample Name

EnviroBlend® Dosage Screening Leaching Test Results

Leaching Results