QUICK-N-DIRTY CLEANUP — The Windward Ahupua'a Alliance will hold a Quick-n-Dirty Cleanup of Kapa'a Quarry Road 12:30-2 p.m. Aug. 12, with a pau hana party to follow; meet at 12:15 p.m. at pull-off area opposite Le Jardin to pick up supplies and get work assignments. Closed-toe shoes with gripping soles required; wear hat and bring a long-sleeved shirt; tools, trash bags, gloves, sunscreen, bug spray and bottled water provided. High school students needing community service credits must call 224-4496 to register.

DIAMOND HEAD SERVICE TRIP — Help the O'ahu Invasive Species group remove fountain grass from Diamond Head State Monument, 3-7 p.m. tomorrow; meet at parking lot. Bring water, sunscreen, sturdy walking shoes, hat. Call 286-4616 or e-mail oisc@hawaii.edu.

NATIVE FOREST PLANTING — The Maui Dryland Forest Restoration Group is holding planting trip at Pu'u Makua 8 a.m.-4 p.m. tomorrow; meet at 'Ulupalakua Ranch Store. Hiking boots required; bring rain gear, 2 liters of water, lunch, sunscreen, hat. Register by e-mailing auwahi@yahoo.com or call (808) 572-4471.

HONU GUARDIANS — Educate residents and visitors about turtle viewing at Laniakea by joining NOAA's Honu Guard program. For details, go to www.fpir.noaa.gov/PRD/prd_volunteer_opps.html.

WORM COMPOSTING — Learn vermi-composting basics in separate workshops at 9:30 a.m. Aug. 18 and 1 p.m. Aug. 19 at the Manoa Gardens Elderly Housing Community Center, 2790 Kahaloa Drive; $30, includes minibin, starter colony and manual. Contact 382-0432 or waikikiworm@hawaii.rr.com.

SIERRA CLUB BEER NIGHT — Hear presentations on environmental topics and how to get involved, at Cassis, 66 Queen St., 5:30-7:30 p.m. Aug. 22, global warming update with Jeff Mikulina; 5:30-7:30 p.m. Sept. 26, curbside recycling with Betty Gearan.

POUHALA MARSH RESTORATION — The Hawai'i Nature Center needs volunteers to pull pickleweed and mangrove at the Waipahu marsh, 8:30-11:30 a.m. Aug. 18. Bring work gloves, water, hat, sunscreen, towel and change of clothes; covered footwear and long pants required. Contact Pauline Kawamata at 955-0100, ext. 18.

THURSDAY HELPERS — Kaua'i's Limahuli Garden & Preserve seeks volunteers to restore native forest on Thursdays, 8-11 a.m. Call Lahela Correa, 808-826-1053, or Lea Taddonio, 808-332-7324, ext. 228.

CHUN'S REEF CLEANUP - Join Adopt-A-Beach Hawaii and Save The Sea Turtles International at noon Aug. 25 for a Chun's Reef Beach highway and coastal cleanup. Trash bag, gloves and purified water provided; bring hat, sunscreen, beach shoes. Meet at 61-529 Kamehameha Highway, Hale'iwa. See www.seaturtlesinternational.com or call 637-2211.

ARBORETUM WORK PARTY — Lyon Arboretum in Manoa holds a volunteer work party at 8 a.m. on the first Saturday of each month. Meet in parking lot, be prepared for rain and sun; closed-toe shoes, bug repellent, hat, gloves recommended.

NATURE CENTER WORKDAYS — Hawai'i Nature Center weekly volunteer workdays are held 10 a.m.-2 p.m. Saturdays at new location, 2131 Makiki Heights Drive; call 988-8995. Tasks include power-washing trailers, painting, planting.

PINE TREE PULLERS — Help remove invasive pines near Maui's Hosmer Grove, 9 a.m.-noon Sundays. Transportation provided at 7:30 a.m. from Harbor Shops, Ma'alaea, and 8:15 a.m. from Mayor Hannibal Tavares Community Center, Pukalani. Closed footwear required; bring water and lunch. Reserve space by calling (808) 856-8341.

KOKUA HALEAKALA — Haleakala National Park needs volunteers for trail maintenance, visitor assistance, weed control, cultural demonstrations, library work and clerical help. Transportation from Makawao available. Apply at www.nps.gov/hale/supportyourpark. Call (808) 572-4487.