besides , this was as close to an apology as i would get . sandy , i believe i am letting these boys spend way too much time with you . low levels ( 0.001 to 0.1 earth standard ) and mild levels ( 0.2 to 2 es ) are ideal for humans . a smile grew on his face while a memory popped in his head . how can you forgive him after what he did ? '' i would n't let go , and the added weight slowed him down even more . 