Multiple tests. When more than one of a particular kind of test required by the test rule is performed, the additional costs will be shared among all those holding exemp- tions. The costs of all the tests will be added together and each exemption holder shall be responsible for a share of the total which is equal to its share of the total production of the test chemical. The exemption holders shall divide their shares between test spon- sors in proportion to the costs of their respective tests. Those sponsoring a particular test do not have to obtain exemptions for that test and therefore do not have reimbursement responsibil- ities for the same tests done by others. Subpart D—Review
Multiple tests. Wh e n m o r e t h a n o n e of a p a r t ic u l a r k i n d of t es t r eq u i r ed b y t h e t es t ru le i s pe r fo r m ed, t h e a ddi t io n a l cos t s will be s h a r ed a m o n g a ll t h ose h oldi n g exe m p- t io n s. T h e cos t s of a ll t h e t es t s will be a dded t oge t h e r a n d e a c h exe m p t io n h olde r s h a ll be r espo n s ible fo r a s h a r e of t h e t o t a l w h ic h i s eq u a l t o i t s s h a r e of t h e t o t a l p r od u c t io n of t h e t es t c h e m ic a l . T h e exe m p t io n h olde r s s h a ll divide t h ei r s h a r es be t wee n t es t spo n- so r s i n p r opo r t io n t o t h e cos t s of t h ei r r espec t ive t es t s. T h ose spo n so r i n g a p a r t ic u l a r t es t do n o t h a ve t o ob t a i n exe m p t io n s fo r t h a t t es t a n d t h e r efo r e do n o t h a ve r ei m b ur se m e n t r espo n s ibil- i t ies fo r t h e s a m e t es t s do n e b y o t h e r s. Subpart D—Review
