Do you love to work with animals? Contact Erin Ellis for more information: volunteers@hstt.org or 530-587-0667. Kids 8-15 years and older may volunteer if accompanied by a parent. Directions to the our offices: We are located at 10382 Donner Pass Rd. above the Fair & Green Store next to Blue Sky Construction. We are upstairs in Ste. 3 above the Law offices of Laub & Laub. IMPORTANT...please park on Donner Pass Rd. if possible.