Laserfiche WebLink
<br />Waste areas 3 and 4 and hole 9A (areas 7, 8, and 9) have SAR values in a stratum <br />or strata which are greater than 10. Area 4 has one strata in which the SAR is <br />marginally unsuitable. Area 6 has a value of 12.0 in the topsoil portion with <br />suitable values below two feet. Area 3 is marginally suitnhle throuF;h with SAR <br />vaues ranging from 10.5 to 11.1. Hole yA has marginally suitable to unsuitable <br />SAR values to a depth of 17 feet. <br />Electrical Conductivity <br />Waste area 1 and hole R9A have marginally suitable values for electrical <br />conductivity (EC). High values (greater than 16 mmhos/cm) indicate high total <br />salt content which is deleterious to plant growth. Seed germination is sensitive <br />• to EC values greater than about 8 mmhos/cm. Area 1 has EC values of about 12 <br />to 13 mmhos/cm from 7 to 17 feet. Hole R9A has EC values of about 14 mmhos/cm <br />at the same depth range. <br />Selenium <br />Selenium values appear to be high (grouter than 2.0~1r~) in all ;areas at various <br />depths. Selenium values approach but do not exceed 5 ppm in both surface and <br />subsurface samples. However, vegetation does not appear affected by selenium <br />concentrations as evidenced by either species distribution or productivity. High <br />densities or frequencies of selenium indicator species were not observed. No <br />• <br />II.I-23 <br />Revised 4/81 <br />