875 The wood cellulose fi ber mulch shall conform to the following requirements: Length of fibers 10 mm. maximum Thickness of Fibers 1 mm. maximum Net Dry Weight Content* Minimum stated on bag pH* 4.0-8.5 Water Holding Capability* 90% Minimum * Test Procedure -MP 715.27.20 The mulch shall be delivered in packages not to exceed 100 lbs.. The package shall bear the name of the manufacturer, the net weight and a supplemental statement of the net dry weight. The material must be approved prior to bei ng used. Acceptance will be based on sampling and testing by the Division for conformance to specifications.
715.27.1 3-Chemical Mulch Binder: A chemical mulch binder shall consist of a
polymer synthetic resin, polypectate, or other material which can readily be removed and will give similar adhesive properties as asphalt when sprayed on straw or other fiber mulches.
715.27.2 Mulch Materials for Landscape Plantings: Acceptable materials for mulching
shall be shredded bark, buckwheat hulls, wood chips or other organic materials approved by the Engineer. Certain inorganic materials such as calcined clay, crushed rock or coarse gravel will be acceptable when designated on the Plans.
715.28 Seed :
The varieties of grass and legume seeds to be furnished to the project shall bear a tag on each bag of each species showing the lot number, the seedman's n ame, the percent of purity, the percent of germination and the weed seed content, in accordance with governing State and Federal laws. All seeds shall be free from noxious weed seeds as set forth in the West Virginia State seed law and in no event shall t he total weed content of any lot of seed or seed mixture exceed one -half percent by weight. The minimum percent purity and germination for the various seeds shall be as shown in Table 715.28. Germination Seed Purity Minimum % Total Minimum (%) Minimum Quick Sprouts (%) Crown Vetch 99 *70 35 Kentucky Bluegrass 85 75 Kentucky 31 Fescue 98 85 Marion Bluegrass 90 75 Perennial Ryegrass 95 85 Red Fescue 98 85 White Dutch Clover 98 *85 55 Crown vetch seed shall be inoculated according to the supplier's recommendations. However, when seeding with the hydroseeder the inoculant shall be increased to five times the recommended rate. If test results indicate noncompliance with the above germination or purity requirements, or both, additional seed may be added to give the equivalent germination or purity, or both. The Division reserves the right to test, reject or approve all seed after delivery on the project.
715.29 Inoculating Bacteria :
This material shall be used to treat all leguminous seed and shall be a pure culture of nitrogen fixing bacteria selected for maximum vitality and ability to transform nitrogen from the air into soluble n itrates and deposit them in the soil. It shall not be more than one year old.
715.30 through 715.32 : Blank
715.33 Vines and Ground Cover Plants :
This material shall have a healthy, well -formed root system, free from disease. All transported stock is subject to inspection by the State Agriculture Department for insect or plant pests, and subject to rejecti on if found lacking in any of the above requirements. All plants shall be nursery grown, two years or older, and of the quality and size designated on the Plans, subject to approval both at the nursery and on the planting site. All vines and ground cover plants shall meet the requirements of U.S.A. Standard for Nursery Stock, AAN. The 1969 edition shall govern unless a more recent issue is in effect at the time of advertisement of bids. For vines and ground cover plants, a listing by standard names in e ffect on any date is on file with the Division and is available on request. 715.34: Blank
715.35 Trees and Shrubs :
Plants shall be healthy with well-developed root systems and top growth for the species and shall be free of injury from disease, insects or other causes. All plants shall be true to type and name in accordance with "Standardized Plant Names" where applic able. Plants shall conform to the requirements of U.S.A. Standard for Nursery Stock, AAN. The 1969 edition shall govern unless a more recent issue is in effect at the time of advertisement of bids. Collected plants shall be native or naturalized trees or shrubs growing in soils favorable for digging. The soil shall be of such character as to be readily retained on the roots of transplanted trees and shrubs. The minimum root spread of bare -root collected plants shall be at least one t hird greater than that for nursery grown bare -root plants. Nursery grown stock, balled and burlapped for shipment, shall have ball sizes conforming to an AAN Standards. In the case of collected plants, ball sizes shall be at least 10 percent (10%) greate r in diameter than those specified for nursery grown stock and shall be of sufficient depth to include the greater portion of the root system. For ornamental flowering trees, deciduous and evergreen trees, and deciduous and evergreen shrubs, a listing by standard names in effect on any date is on file with the Division and is available on request.